From 5fda93834efe5d08227712c07c9a580e8f123f01 Mon Sep 17 00:00:00 2001
From: 单军华 <WindShan@danjunhuas-MacBook-Pro.local>
Date: Wed, 08 Mar 2017 13:06:09 +0800
Subject: [PATCH] socket 通信demo 已测试
---
SocketDemo/SocketControl/Socket.m | 205
SocketDemo/Utils/MJExtension/NSObject+MJKeyValue.m | 708 +
SocketDemo/Utils/AFNetworking/AFURLRequestSerialization.m | 1376 ++
SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist | 87
SocketDemo/Utils/AFNetworking/AFURLRequestSerialization.h | 454
SocketDemo/Utils/GCDAsyncSocket/GCDAsyncSocket.h | 1210 ++
SocketDemo/Utils/GCDAsyncSocket/GCDAsyncSocket.m | 8365 +++++++++++++++++
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.m | 156
SocketDemo/SocketDemo.xcodeproj/xcuserdata/Apple.xcuserdatad/xcschemes/SocketDemo.xcscheme | 91
SocketDemo/Utils/MJExtension/NSObject+MJKeyValue.h | 225
SocketDemo/SocketControl/SocketModel.m | 13
SocketDemo/SocketControl/Socket.h | 45
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.h | 103
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.m | 113
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.h | 80
SocketDemo/SocketControl/SocketModel.h | 13
SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcschemes/SocketDemo.xcscheme | 91
SocketDemo/SocketControl/ReconnectControl.m | 86
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.m | 258
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.h | 53
SocketDemo/Utils/MJExtension/MJExtensionConst.m | 27
SocketDemo/SocketControl/ReconnectControl.h | 31
SocketDemo/Utils/MJExtension/MJPropertyType.m | 71
SocketDemo/Utils/MJExtension/NSObject+MJCoding.h | 55
SocketDemo/Utils/MJExtension/MJPropertyType.h | 39
SocketDemo/Utils/MJExtension/MJPropertyKey.m | 25
SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/xcuserdata/WindShan.xcuserdatad/UserInterfaceState.xcuserstate | 0
SocketDemo/Utils/MJExtension/NSObject+MJClass.m | 168
SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/contents.xcworkspacedata | 7
SocketDemo/Utils/MJExtension/MJPropertyKey.h | 30
SocketDemo/Utils/MJExtension/NSObject+MJClass.h | 90
SocketDemo/Utils/MJExtension/NSObject+MJCoding.m | 54
SocketDemo/Utils/MJExtension/NSObject+MJProperty.m | 271
SocketDemo/SocketDemo/Base.lproj/LaunchScreen.storyboard | 27
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFAutoPurgingImageCache.h | 149
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.m | 118
SocketDemo/Utils/MJExtension/NSObject+MJProperty.h | 79
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFImageDownloader.h | 157
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.h | 64
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFAutoPurgingImageCache.m | 201
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.m | 157
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFImageDownloader.m | 391
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.h | 109
SocketDemo/SocketDemo/Assets.xcassets/AppIcon.appiconset/Contents.json | 38
SocketDemo/Utils/AFNetworking/AFNetworkReachabilityManager.m | 260
SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/xcuserdata/Apple.xcuserdatad/UserInterfaceState.xcuserstate | 0
SocketDemo/SocketDemo/Info.plist | 38
SocketDemo/Utils/MJExtension/NSString+MJExtension.h | 42
SocketDemo/SocketControl/DataControl.m | 139
SocketDemo/SocketControl/PrefixHeader.pch | 17
SocketDemo/Utils/AFNetworking/AFNetworkReachabilityManager.h | 206
SocketDemo/SocketControl/DataControl.h | 23
SocketDemo/SocketDemo/Base.lproj/Main.storyboard | 26
SocketDemo/SocketDemo/main.m | 16
SocketDemo/Utils/AFNetworking/AFNetworking.h | 41
SocketDemo/Utils/AFNetworking/AFURLSessionManager.h | 499 +
SocketDemo/Utils/MJExtension/NSString+MJExtension.m | 110
SocketDemo/SocketDemo/ViewController.m | 62
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.m | 114
SocketDemo/Utils/AFNetworking/AFURLResponseSerialization.h | 311
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIKit+AFNetworking.h | 42
SocketDemo/Utils/MJExtension/MJExtensionConst.h | 88
SocketDemo/SocketDemo.xcodeproj/xcuserdata/Apple.xcuserdatad/xcschemes/xcschememanagement.plist | 22
SocketDemo/Utils/AFNetworking/AFHTTPSessionManager.h | 295
SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcschemes/xcschememanagement.plist | 22
SocketDemo/Utils/AFNetworking/AFSecurityPolicy.h | 154
SocketDemo/Utils/MJExtension/MJExtension.h | 15
SocketDemo/Utils/MJExtension/MJProperty.m | 177
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.m | 302
SocketDemo/Utils/AFNetworking/AFHTTPSessionManager.m | 366
SocketDemo/Utils/GCDAsyncSocket/GCDAsyncUdpSocket.h | 1009 ++
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.h | 175
SocketDemo/Utils/GCDAsyncSocket/GCDAsyncUdpSocket.m | 5430 +++++++++++
SocketDemo/Utils/AFNetworking/AFSecurityPolicy.m | 353
SocketDemo/Utils/AFNetworking/AFURLResponseSerialization.m | 828 +
SocketDemo/Utils/MJExtension/MJProperty.h | 53
SocketDemo/SocketDemo/ViewController.h | 15
SocketDemo/SocketDemo.xcodeproj/project.pbxproj | 561 +
SocketDemo/SocketDemo/AppDelegate.h | 17
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImage+AFNetworking.h | 35
SocketDemo/Utils/MJExtension/MJFoundation.m | 48
SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.h | 48
SocketDemo/SocketDemo/AppDelegate.m | 51
SocketDemo/Utils/AFNetworking/AFURLSessionManager.m | 1244 ++
SocketDemo/Utils/MJExtension/MJFoundation.h | 13
85 files changed, 29,357 insertions(+), 0 deletions(-)
diff --git a/SocketDemo/SocketControl/DataControl.h b/SocketDemo/SocketControl/DataControl.h
new file mode 100644
index 0000000..ce82734
--- /dev/null
+++ b/SocketDemo/SocketControl/DataControl.h
@@ -0,0 +1,23 @@
+//
+// DataControl.h
+// HeBeiFM
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+typedef void(^SocketDataBlock)(NSMutableArray* models);
+
+@interface DataControl : NSObject
+
++(DataControl*)shareControl;
+/**
+ ������data
+ */
+-(void)appendingData:(id)data newData:(SocketDataBlock)block;
+
+-(void)clearData;
+
+@end
diff --git a/SocketDemo/SocketControl/DataControl.m b/SocketDemo/SocketControl/DataControl.m
new file mode 100644
index 0000000..f2f6a51
--- /dev/null
+++ b/SocketDemo/SocketControl/DataControl.m
@@ -0,0 +1,139 @@
+//
+// SocketDataControl.m
+// HeBeiFM
+//
+// Created by Apple on 16/8/24.
+// Copyright �� 2016��� Apple. All rights reserved.
+/**
+ socket������������������������������������������������������������������
+ ������������������������������������������������������������������������������\n(���������)���������
+
+ ������:
+
+ ������������������������ {"key","value"}\n
+
+ ������������������������������
+ ........
+ {"key","value"}\n
+ {"key","value"}\n
+ {"key","value"}\n
+ {"key","value"}\n
+ {"key",
+
+ ������������������������������������socket���������������������������������������������������������������������20KB������������������������������������������������������������
+ ������������������������������������
+
+ "value"}\n
+ {"key","value"}\n
+ {"key","value"}\n
+ {"key","value"}\n
+ ........
+
+ ������������������������������������������������������������������������������������������������������;
+
+ ���������������
+
+ ������������������������������������������������������������������������������������������������UI������������������������������������������������������������������������������������������������������������������������������������������������������������������������������.....
+
+ */
+
+#import "DataControl.h"
+#import "SocketModel.h"
+#import "MJExtension.h"
+
+@interface DataControl ()
+{
+ //���������������������������
+ NSMutableData *_currentData;
+ //������������������������������
+ NSMutableArray *_lastMessages;
+}
+@end
+
+@implementation DataControl
+
+
++(DataControl*)shareControl
+{
+ static DataControl *control = nil;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ control = [DataControl new];
+ });
+ return control;
+}
+
+-(instancetype)init
+{
+ if (self = [super init]) {
+ //������������
+ _currentData = [NSMutableData new];
+ //������������������������
+ _lastMessages = [NSMutableArray new];
+ }
+ return self;
+}
+
+-(void)appendingData:(id)data newData:(SocketDataBlock)block
+{
+ //1������������������������
+ [_currentData appendData:data];
+
+ //2���������������������
+ NSString *string = [[NSString alloc] initWithData:_currentData encoding:NSUTF8StringEncoding];
+
+ NSLog(@"socket ���������������data = %@",string);
+
+ NSUInteger len = [_currentData length];
+ Byte *byteData = (Byte*)malloc(len);
+ memcpy(byteData, [_currentData bytes], len);
+
+ for( NSUInteger i = 0; i < len; i++ )
+ {
+ NSLog(@"���%ld���������:%x",i,byteData[i]);
+ }
+
+ //3������������������
+ NSArray *stringArr = [string componentsSeparatedByString:@"\n"];
+ NSMutableArray *usefulStringArr = [NSMutableArray new];
+
+ //4���������������������������
+ for (NSString *str in stringArr) {
+ if ([str hasPrefix:@"{"] && [str hasSuffix:@"}"]) {
+ [usefulStringArr addObject:str];
+ }
+ }
+
+ //5���������������������������������
+ NSMutableArray *newStringArr = [NSMutableArray new];
+ for (NSString *str in usefulStringArr) {
+ if (![_lastMessages containsObject:str]) {
+ [newStringArr addObject:str];
+ }
+ }
+ //6������������������������ ������������������
+ _lastMessages = usefulStringArr;
+ block([self modelArrFrom:newStringArr]);
+ _currentData = data;
+}
+
+/**
+ ������������
+ */
+-(NSMutableArray*)modelArrFrom:(NSMutableArray*)stringArr
+{
+ NSMutableArray *modelArr = [NSMutableArray new];
+ for (NSString *string in stringArr) {
+ SocketModel *model = [SocketModel mj_objectWithKeyValues:string];
+ [modelArr addObject:model];
+ }
+ return modelArr;
+}
+
+-(void)clearData
+{
+ _currentData = nil;
+ _currentData = [NSMutableData new];
+}
+
+@end
diff --git a/SocketDemo/SocketControl/PrefixHeader.pch b/SocketDemo/SocketControl/PrefixHeader.pch
new file mode 100644
index 0000000..3bb500c
--- /dev/null
+++ b/SocketDemo/SocketControl/PrefixHeader.pch
@@ -0,0 +1,17 @@
+//
+// PrefixHeader.pch
+// SocketDemo
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#ifndef PrefixHeader_pch
+#define PrefixHeader_pch
+
+#import "AFNetworking.h"
+#import "MJExtension.h"
+
+typedef void(^VoidBlock)(void);
+
+#endif /* PrefixHeader_pch */
diff --git a/SocketDemo/SocketControl/ReconnectControl.h b/SocketDemo/SocketControl/ReconnectControl.h
new file mode 100644
index 0000000..bc4d825
--- /dev/null
+++ b/SocketDemo/SocketControl/ReconnectControl.h
@@ -0,0 +1,31 @@
+//
+// ReconnectControl.h
+// HeBeiFM
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "PrefixHeader.pch"
+//socket���������������������������/������������
+typedef enum
+{
+ ReconnecNone,
+ Reconnecting,
+}ReconnectStatus;
+
+typedef void(^VoidBlock)(void);
+
+@interface ReconnectControl : NSObject
+
++(ReconnectControl *)shareControl;
+
+@property (assign,nonatomic) ReconnectStatus status;
+
+-(void)reconnect;
+
+-(void)startReconnectBlock:(VoidBlock)noticeUI success:(VoidBlock)success;
+
+
+@end
diff --git a/SocketDemo/SocketControl/ReconnectControl.m b/SocketDemo/SocketControl/ReconnectControl.m
new file mode 100644
index 0000000..21d605d
--- /dev/null
+++ b/SocketDemo/SocketControl/ReconnectControl.m
@@ -0,0 +1,86 @@
+//
+// ReconnectControl.m
+// HeBeiFM
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+/**
+ ��������������� ��������������������� ������30���������������������������UI���������������������������������������������������������
+ */
+
+#import "ReconnectControl.h"
+#import "GCDAsyncSocket.h"
+#import "Socket.h"
+
+@interface ReconnectControl ()<GCDAsyncSocketDelegate>
+{
+ //������������UI������
+ VoidBlock _UIBlock;
+ //������������socket������������
+ VoidBlock _successBlock;
+ //���������
+ NSTimer *_reconnectTimer;
+ //socket
+ GCDAsyncSocket *_socket;
+ //������������
+ NSInteger _reconnectCount;
+
+}
+@end
+
+@implementation ReconnectControl
+
++(ReconnectControl *)shareControl
+{
+ static ReconnectControl *control;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ control = [ReconnectControl new];
+ });
+ return control;
+}
+
+
+-(void)startReconnectBlock:(VoidBlock)noticeUI success:(VoidBlock)success
+
+{
+ _UIBlock = noticeUI;
+ _successBlock = success;
+ _reconnectCount = 0;
+ [_reconnectTimer invalidate];
+ _reconnectTimer = [NSTimer scheduledTimerWithTimeInterval:6 target:self selector:@selector(reconnect) userInfo:nil repeats:true];
+ _status = Reconnecting;
+}
+
+-(void)reconnect
+{
+ //���������5������������������������������UI������������������
+ if (_reconnectCount == 5) {
+ _UIBlock();
+ }
+ _reconnectCount += 1;
+ [self connectHost];
+}
+
+//���������������
+-(void)connectHost
+{
+ _socket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
+ NSError *error = nil;
+ [_socket connectToHost:[Socket sharedInstance].socketHost onPort:[Socket sharedInstance].socketPort withTimeout:3 error:&error];
+}
+
+/**
+ ������������������������Socket������������������������������socket���UI
+ */
+-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port
+{
+ _successBlock();
+ _status = ReconnecNone;
+ _reconnectCount = 0;
+ [_reconnectTimer invalidate];
+ [_socket disconnect];
+ _socket.delegate = nil;
+ NSLog(@"������������");
+}
+@end
diff --git a/SocketDemo/SocketControl/Socket.h b/SocketDemo/SocketControl/Socket.h
new file mode 100644
index 0000000..163795f
--- /dev/null
+++ b/SocketDemo/SocketControl/Socket.h
@@ -0,0 +1,45 @@
+//
+// Socketxxxx.h
+// HeBeiFM
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "PrefixHeader.pch"
+#import "GCDAsyncSocket.h"
+
+#define SocketOfflineByServer @"SocketOfflineByServer"
+
+#define SocketOfflineByUser @"SocketOfflineByUser"
+
+#define SocketNewMessageNotification @"SocketNewMessageNotification"
+
+#define SocketConnectErrorNotification @"SocketConnectErrorNotification"
+#define SocketConnectSuccessNotification @"SocketConnectSuccessNotification"
+
+typedef void(^SocketBlock)(id data);
+
+@interface Socket : NSObject
+@property (nonatomic, strong) GCDAsyncSocket *socket;// socket
+@property (nonatomic, copy ) NSString *socketHost;// socket������������
+@property (nonatomic, assign) UInt16 socketPort;// socket���������
+
+/**
+ ������������
+ */
+@property (assign,nonatomic) AFNetworkReachabilityStatus netStatus;
+
++ (Socket *)sharedInstance;
+
+-(void)socketConnectHost:(VoidBlock)block;// socket������
+
+-(void)cutOffSocket; // ������socket������
+
+-(void)readData;
+
+-(void)writeData:(NSData*)data;
+
+
+@end
diff --git a/SocketDemo/SocketControl/Socket.m b/SocketDemo/SocketControl/Socket.m
new file mode 100644
index 0000000..2774cbf
--- /dev/null
+++ b/SocketDemo/SocketControl/Socket.m
@@ -0,0 +1,205 @@
+//
+// Socketxxxx.m
+// HeBeiFM
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import "Socket.h"
+/**
+ ������������socket���������������
+ */
+#import "DataControl.h"
+
+/**
+ socket������������������
+ */
+#import "ReconnectControl.h"
+
+@interface Socket ()<GCDAsyncSocketDelegate>
+{
+ VoidBlock _block;
+ NSTimer *_connectTimer; // ���������,������������������
+ NSInteger _dataTag;
+}
+@end
+
+@implementation Socket
+
+/**
+ ������������
+ */
++(Socket *) sharedInstance
+{
+ static Socket *sharedInstace = nil;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ sharedInstace = [[self alloc] init];
+ });
+ return sharedInstace;
+}
+
+
+// socket������
+-(void)socketConnectHost:(VoidBlock)block
+{
+ //���������������������������������
+ [[DataControl shareControl] clearData];
+ //������������
+ _block = block;
+ //������socket
+ self.socket = [[GCDAsyncSocket alloc] initWithDelegate:self delegateQueue:dispatch_get_main_queue()];
+ NSError *error = nil;
+ [self.socket connectToHost:self.socketHost onPort:self.socketPort withTimeout:3 error:&error];
+}
+
+/**
+ ������������
+ */
+-(void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port
+{
+ if (_block) {
+ _block();
+ }
+ //������socket������������
+ [self readData];
+ // ������30s���������������������������
+ _connectTimer = [NSTimer scheduledTimerWithTimeInterval:30 target:self selector:@selector(longConnectToSocket) userInfo:nil repeats:YES];// ���longConnectToSocket���������������������������������������������������������
+ [_connectTimer fire];
+}
+
+// ������socket
+-(void)cutOffSocket{
+
+ self.socket.userData = SocketOfflineByUser;// ������������������������������
+
+ self.socket.delegate = nil;
+
+ [_connectTimer invalidate];
+
+ [self.socket disconnect];
+
+ self.socket.userData = SocketOfflineByUser;// ������������������������������
+
+ [[DataControl shareControl] clearData];
+}
+
+//socket������,���������������������������������������������SocketReconnectControl���������
+-(void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(NSError *)err
+{
+ NSLog(@"��������������������� socket.userData = %@",sock.userData);
+ if ([sock.userData isEqualToString:SocketOfflineByUser]) {
+ return;
+ }else if([sock.userData isEqualToString:SocketOfflineByServer]){
+ [self reconnectSocket];
+ }
+}
+-(void)reconnectSocket
+{
+ [[ReconnectControl shareControl] startReconnectBlock:^{
+ [[NSNotificationCenter defaultCenter] postNotificationName:SocketConnectErrorNotification object:nil];
+ } success:^{
+ [[NSNotificationCenter defaultCenter] postNotificationName:SocketConnectSuccessNotification object:nil];
+ }];
+}
+
+// ������������
+-(void)longConnectToSocket{
+
+ // ������������������������������������������������������������������@"."���������������������������������������������
+ NSString *longConnect = @".\n";
+ //NSData *dataStream = [longConnect dataUsingEncoding:NSUTF8StringEncoding];
+
+// byte[] data = new byte[12];
+// data[0] = (byte) 0x9c;
+// data[1] = (byte) 0x00;
+// data[2] = (byte) 0x00;
+// data[3] = (byte) 0x01;
+// data[4] = (byte) 0x00;
+// data[5] = (byte) 0x01;
+// data[6] = (byte) 0xf0;
+// data[7] = (byte) 0xfe;
+// data[8] = (byte) 0x6b;
+// data[9] = (byte) 0x15;
+// data[10] = (byte) 0x6e;
+// data[11] = (byte) 0xb7;
+
+ Byte *data = (Byte*)malloc(12);
+ data[0] = 0x9c;
+ data[1] = 0x00;
+ data[2] = 0x00;
+ data[3] = 0x01;
+ data[4] = 0x00;
+ data[5] = 0x01;
+ data[6] = 0xf0;
+ data[7] = 0xfe;
+ data[8] = 0x6b;
+ data[9] = 0x15;
+ data[10] = 0x6e;
+ data[11] = 0xb7;
+
+ NSData *dataStream = [NSData dataWithBytes: data length: 12];
+
+ [self writeData:dataStream];
+}
+
+
+/**
+ ������������������������������������������������������SocketDataControl���������������������
+ */
+-(void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag
+{
+ [self readData];
+ NSLog(@"������������");
+ __block NSMutableArray *arr = [NSMutableArray new];
+ [[DataControl shareControl] appendingData:data newData:^(NSMutableArray *models)
+ {
+ [self performSelector:@selector(sendMessage:) withObject:models];
+ arr = models;
+ }];
+}
+
+/**
+ ������������������
+ */
+-(void)readData
+{
+ _dataTag +=1;
+ [self.socket readDataWithTimeout:-1 tag:_dataTag];
+}
+/**
+ ������������������
+ */
+-(void)writeData:(NSData*)data
+{
+ _dataTag += 1;
+ [_socket writeData:data withTimeout:-1 tag:_dataTag];
+}
+
+-(void)socket:(GCDAsyncSocket *)sock didWriteDataWithTag:(long)tag
+{
+ NSLog(@"Socket������������");
+}
+
+/**
+ ������������������,���������������AFN���������������������������������������UI������
+ */
+-(void)setNetStatus:(AFNetworkReachabilityStatus)netStatus
+{
+ _netStatus = netStatus;
+ if (netStatus == AFNetworkReachabilityStatusNotReachable) {
+ [[NSNotificationCenter defaultCenter] postNotificationName:SocketConnectErrorNotification object:nil];
+ }else{
+ if ([ReconnectControl shareControl].status == Reconnecting) {
+ [[ReconnectControl shareControl] reconnect];
+ }
+ }
+}
+
+-(void)sendMessage:(NSMutableArray*)messages
+{
+ [[NSNotificationCenter defaultCenter] postNotificationName:SocketNewMessageNotification object:messages];
+}
+
+@end
diff --git a/SocketDemo/SocketControl/SocketModel.h b/SocketDemo/SocketControl/SocketModel.h
new file mode 100644
index 0000000..e386325
--- /dev/null
+++ b/SocketDemo/SocketControl/SocketModel.h
@@ -0,0 +1,13 @@
+//
+// SocketModel.h
+// SocketDemo
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface SocketModel : NSObject
+
+@end
diff --git a/SocketDemo/SocketControl/SocketModel.m b/SocketDemo/SocketControl/SocketModel.m
new file mode 100644
index 0000000..15d5438
--- /dev/null
+++ b/SocketDemo/SocketControl/SocketModel.m
@@ -0,0 +1,13 @@
+//
+// SocketModel.m
+// SocketDemo
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import "SocketModel.h"
+
+@implementation SocketModel
+
+@end
diff --git a/SocketDemo/SocketDemo.xcodeproj/project.pbxproj b/SocketDemo/SocketDemo.xcodeproj/project.pbxproj
new file mode 100644
index 0000000..1f45bcd
--- /dev/null
+++ b/SocketDemo/SocketDemo.xcodeproj/project.pbxproj
@@ -0,0 +1,561 @@
+// !$*UTF8*$!
+{
+ archiveVersion = 1;
+ classes = {
+ };
+ objectVersion = 46;
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diff --git a/SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/contents.xcworkspacedata b/SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/contents.xcworkspacedata
new file mode 100644
index 0000000..96f351d
--- /dev/null
+++ b/SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/contents.xcworkspacedata
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Workspace
+ version = "1.0">
+ <FileRef
+ location = "self:SocketDemo.xcodeproj">
+ </FileRef>
+</Workspace>
diff --git a/SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/xcuserdata/Apple.xcuserdatad/UserInterfaceState.xcuserstate b/SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/xcuserdata/Apple.xcuserdatad/UserInterfaceState.xcuserstate
new file mode 100644
index 0000000..6e5211b
--- /dev/null
+++ b/SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/xcuserdata/Apple.xcuserdatad/UserInterfaceState.xcuserstate
Binary files differ
diff --git a/SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/xcuserdata/WindShan.xcuserdatad/UserInterfaceState.xcuserstate b/SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/xcuserdata/WindShan.xcuserdatad/UserInterfaceState.xcuserstate
new file mode 100644
index 0000000..f286ca5
--- /dev/null
+++ b/SocketDemo/SocketDemo.xcodeproj/project.xcworkspace/xcuserdata/WindShan.xcuserdatad/UserInterfaceState.xcuserstate
Binary files differ
diff --git a/SocketDemo/SocketDemo.xcodeproj/xcuserdata/Apple.xcuserdatad/xcschemes/SocketDemo.xcscheme b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/Apple.xcuserdatad/xcschemes/SocketDemo.xcscheme
new file mode 100644
index 0000000..10c3af2
--- /dev/null
+++ b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/Apple.xcuserdatad/xcschemes/SocketDemo.xcscheme
@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+ LastUpgradeVersion = "0800"
+ version = "1.3">
+ <BuildAction
+ parallelizeBuildables = "YES"
+ buildImplicitDependencies = "YES">
+ <BuildActionEntries>
+ <BuildActionEntry
+ buildForTesting = "YES"
+ buildForRunning = "YES"
+ buildForProfiling = "YES"
+ buildForArchiving = "YES"
+ buildForAnalyzing = "YES">
+ <BuildableReference
+ BuildableIdentifier = "primary"
+ BlueprintIdentifier = "18680E701D93B173000880D8"
+ BuildableName = "SocketDemo.app"
+ BlueprintName = "SocketDemo"
+ ReferencedContainer = "container:SocketDemo.xcodeproj">
+ </BuildableReference>
+ </BuildActionEntry>
+ </BuildActionEntries>
+ </BuildAction>
+ <TestAction
+ buildConfiguration = "Debug"
+ selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+ selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+ shouldUseLaunchSchemeArgsEnv = "YES">
+ <Testables>
+ </Testables>
+ <MacroExpansion>
+ <BuildableReference
+ BuildableIdentifier = "primary"
+ BlueprintIdentifier = "18680E701D93B173000880D8"
+ BuildableName = "SocketDemo.app"
+ BlueprintName = "SocketDemo"
+ ReferencedContainer = "container:SocketDemo.xcodeproj">
+ </BuildableReference>
+ </MacroExpansion>
+ <AdditionalOptions>
+ </AdditionalOptions>
+ </TestAction>
+ <LaunchAction
+ buildConfiguration = "Debug"
+ selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+ selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+ launchStyle = "0"
+ useCustomWorkingDirectory = "NO"
+ ignoresPersistentStateOnLaunch = "NO"
+ debugDocumentVersioning = "YES"
+ debugServiceExtension = "internal"
+ allowLocationSimulation = "YES">
+ <BuildableProductRunnable
+ runnableDebuggingMode = "0">
+ <BuildableReference
+ BuildableIdentifier = "primary"
+ BlueprintIdentifier = "18680E701D93B173000880D8"
+ BuildableName = "SocketDemo.app"
+ BlueprintName = "SocketDemo"
+ ReferencedContainer = "container:SocketDemo.xcodeproj">
+ </BuildableReference>
+ </BuildableProductRunnable>
+ <AdditionalOptions>
+ </AdditionalOptions>
+ </LaunchAction>
+ <ProfileAction
+ buildConfiguration = "Release"
+ shouldUseLaunchSchemeArgsEnv = "YES"
+ savedToolIdentifier = ""
+ useCustomWorkingDirectory = "NO"
+ debugDocumentVersioning = "YES">
+ <BuildableProductRunnable
+ runnableDebuggingMode = "0">
+ <BuildableReference
+ BuildableIdentifier = "primary"
+ BlueprintIdentifier = "18680E701D93B173000880D8"
+ BuildableName = "SocketDemo.app"
+ BlueprintName = "SocketDemo"
+ ReferencedContainer = "container:SocketDemo.xcodeproj">
+ </BuildableReference>
+ </BuildableProductRunnable>
+ </ProfileAction>
+ <AnalyzeAction
+ buildConfiguration = "Debug">
+ </AnalyzeAction>
+ <ArchiveAction
+ buildConfiguration = "Release"
+ revealArchiveInOrganizer = "YES">
+ </ArchiveAction>
+</Scheme>
diff --git a/SocketDemo/SocketDemo.xcodeproj/xcuserdata/Apple.xcuserdatad/xcschemes/xcschememanagement.plist b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/Apple.xcuserdatad/xcschemes/xcschememanagement.plist
new file mode 100644
index 0000000..649e486
--- /dev/null
+++ b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/Apple.xcuserdatad/xcschemes/xcschememanagement.plist
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+ <key>SchemeUserState</key>
+ <dict>
+ <key>SocketDemo.xcscheme</key>
+ <dict>
+ <key>orderHint</key>
+ <integer>0</integer>
+ </dict>
+ </dict>
+ <key>SuppressBuildableAutocreation</key>
+ <dict>
+ <key>18680E701D93B173000880D8</key>
+ <dict>
+ <key>primary</key>
+ <true/>
+ </dict>
+ </dict>
+</dict>
+</plist>
diff --git a/SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
new file mode 100644
index 0000000..ef6690a
--- /dev/null
+++ b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcdebugger/Breakpoints_v2.xcbkptlist
@@ -0,0 +1,87 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Bucket
+ type = "1"
+ version = "2.0">
+ <Breakpoints>
+ <BreakpointProxy
+ BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
+ <BreakpointContent
+ shouldBeEnabled = "No"
+ ignoreCount = "0"
+ continueAfterRunningActions = "No"
+ filePath = "SocketControl/Socket.m"
+ timestampString = "510637983.489734"
+ startingColumnNumber = "9223372036854775807"
+ endingColumnNumber = "9223372036854775807"
+ startingLineNumber = "144"
+ endingLineNumber = "144"
+ landmarkName = "-longConnectToSocket"
+ landmarkType = "7">
+ </BreakpointContent>
+ </BreakpointProxy>
+ <BreakpointProxy
+ BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
+ <BreakpointContent
+ shouldBeEnabled = "No"
+ ignoreCount = "0"
+ continueAfterRunningActions = "No"
+ filePath = "SocketControl/Socket.m"
+ timestampString = "510638494.235849"
+ startingColumnNumber = "9223372036854775807"
+ endingColumnNumber = "9223372036854775807"
+ startingLineNumber = "154"
+ endingLineNumber = "154"
+ landmarkName = "-socket:didReadData:withTag:"
+ landmarkType = "7">
+ </BreakpointContent>
+ </BreakpointProxy>
+ <BreakpointProxy
+ BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
+ <BreakpointContent
+ shouldBeEnabled = "No"
+ ignoreCount = "0"
+ continueAfterRunningActions = "No"
+ filePath = "SocketControl/Socket.m"
+ timestampString = "510640316.618934"
+ startingColumnNumber = "9223372036854775807"
+ endingColumnNumber = "9223372036854775807"
+ startingLineNumber = "158"
+ endingLineNumber = "158"
+ landmarkName = "-socket:didReadData:withTag:"
+ landmarkType = "7">
+ </BreakpointContent>
+ </BreakpointProxy>
+ <BreakpointProxy
+ BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
+ <BreakpointContent
+ shouldBeEnabled = "No"
+ ignoreCount = "0"
+ continueAfterRunningActions = "No"
+ filePath = "SocketControl/DataControl.m"
+ timestampString = "510640331.36636"
+ startingColumnNumber = "9223372036854775807"
+ endingColumnNumber = "9223372036854775807"
+ startingLineNumber = "85"
+ endingLineNumber = "85"
+ landmarkName = "-appendingData:newData:"
+ landmarkType = "7">
+ </BreakpointContent>
+ </BreakpointProxy>
+ <BreakpointProxy
+ BreakpointExtensionID = "Xcode.Breakpoint.FileBreakpoint">
+ <BreakpointContent
+ shouldBeEnabled = "No"
+ ignoreCount = "0"
+ continueAfterRunningActions = "No"
+ filePath = "SocketControl/DataControl.m"
+ timestampString = "510640714.404274"
+ startingColumnNumber = "9223372036854775807"
+ endingColumnNumber = "9223372036854775807"
+ startingLineNumber = "97"
+ endingLineNumber = "97"
+ landmarkName = "-appendingData:newData:"
+ landmarkType = "7">
+ </BreakpointContent>
+ </BreakpointProxy>
+ </Breakpoints>
+</Bucket>
diff --git a/SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcschemes/SocketDemo.xcscheme b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcschemes/SocketDemo.xcscheme
new file mode 100644
index 0000000..a037320
--- /dev/null
+++ b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcschemes/SocketDemo.xcscheme
@@ -0,0 +1,91 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<Scheme
+ LastUpgradeVersion = "0820"
+ version = "1.3">
+ <BuildAction
+ parallelizeBuildables = "YES"
+ buildImplicitDependencies = "YES">
+ <BuildActionEntries>
+ <BuildActionEntry
+ buildForTesting = "YES"
+ buildForRunning = "YES"
+ buildForProfiling = "YES"
+ buildForArchiving = "YES"
+ buildForAnalyzing = "YES">
+ <BuildableReference
+ BuildableIdentifier = "primary"
+ BlueprintIdentifier = "18680E701D93B173000880D8"
+ BuildableName = "SocketDemo.app"
+ BlueprintName = "SocketDemo"
+ ReferencedContainer = "container:SocketDemo.xcodeproj">
+ </BuildableReference>
+ </BuildActionEntry>
+ </BuildActionEntries>
+ </BuildAction>
+ <TestAction
+ buildConfiguration = "Debug"
+ selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+ selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+ shouldUseLaunchSchemeArgsEnv = "YES">
+ <Testables>
+ </Testables>
+ <MacroExpansion>
+ <BuildableReference
+ BuildableIdentifier = "primary"
+ BlueprintIdentifier = "18680E701D93B173000880D8"
+ BuildableName = "SocketDemo.app"
+ BlueprintName = "SocketDemo"
+ ReferencedContainer = "container:SocketDemo.xcodeproj">
+ </BuildableReference>
+ </MacroExpansion>
+ <AdditionalOptions>
+ </AdditionalOptions>
+ </TestAction>
+ <LaunchAction
+ buildConfiguration = "Debug"
+ selectedDebuggerIdentifier = "Xcode.DebuggerFoundation.Debugger.LLDB"
+ selectedLauncherIdentifier = "Xcode.DebuggerFoundation.Launcher.LLDB"
+ launchStyle = "0"
+ useCustomWorkingDirectory = "NO"
+ ignoresPersistentStateOnLaunch = "NO"
+ debugDocumentVersioning = "YES"
+ debugServiceExtension = "internal"
+ allowLocationSimulation = "YES">
+ <BuildableProductRunnable
+ runnableDebuggingMode = "0">
+ <BuildableReference
+ BuildableIdentifier = "primary"
+ BlueprintIdentifier = "18680E701D93B173000880D8"
+ BuildableName = "SocketDemo.app"
+ BlueprintName = "SocketDemo"
+ ReferencedContainer = "container:SocketDemo.xcodeproj">
+ </BuildableReference>
+ </BuildableProductRunnable>
+ <AdditionalOptions>
+ </AdditionalOptions>
+ </LaunchAction>
+ <ProfileAction
+ buildConfiguration = "Release"
+ shouldUseLaunchSchemeArgsEnv = "YES"
+ savedToolIdentifier = ""
+ useCustomWorkingDirectory = "NO"
+ debugDocumentVersioning = "YES">
+ <BuildableProductRunnable
+ runnableDebuggingMode = "0">
+ <BuildableReference
+ BuildableIdentifier = "primary"
+ BlueprintIdentifier = "18680E701D93B173000880D8"
+ BuildableName = "SocketDemo.app"
+ BlueprintName = "SocketDemo"
+ ReferencedContainer = "container:SocketDemo.xcodeproj">
+ </BuildableReference>
+ </BuildableProductRunnable>
+ </ProfileAction>
+ <AnalyzeAction
+ buildConfiguration = "Debug">
+ </AnalyzeAction>
+ <ArchiveAction
+ buildConfiguration = "Release"
+ revealArchiveInOrganizer = "YES">
+ </ArchiveAction>
+</Scheme>
diff --git a/SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcschemes/xcschememanagement.plist b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcschemes/xcschememanagement.plist
new file mode 100644
index 0000000..649e486
--- /dev/null
+++ b/SocketDemo/SocketDemo.xcodeproj/xcuserdata/WindShan.xcuserdatad/xcschemes/xcschememanagement.plist
@@ -0,0 +1,22 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+ <key>SchemeUserState</key>
+ <dict>
+ <key>SocketDemo.xcscheme</key>
+ <dict>
+ <key>orderHint</key>
+ <integer>0</integer>
+ </dict>
+ </dict>
+ <key>SuppressBuildableAutocreation</key>
+ <dict>
+ <key>18680E701D93B173000880D8</key>
+ <dict>
+ <key>primary</key>
+ <true/>
+ </dict>
+ </dict>
+</dict>
+</plist>
diff --git a/SocketDemo/SocketDemo/AppDelegate.h b/SocketDemo/SocketDemo/AppDelegate.h
new file mode 100644
index 0000000..1615c17
--- /dev/null
+++ b/SocketDemo/SocketDemo/AppDelegate.h
@@ -0,0 +1,17 @@
+//
+// AppDelegate.h
+// SocketDemo
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface AppDelegate : UIResponder <UIApplicationDelegate>
+
+@property (strong, nonatomic) UIWindow *window;
+
+
+@end
+
diff --git a/SocketDemo/SocketDemo/AppDelegate.m b/SocketDemo/SocketDemo/AppDelegate.m
new file mode 100644
index 0000000..f82d0b4
--- /dev/null
+++ b/SocketDemo/SocketDemo/AppDelegate.m
@@ -0,0 +1,51 @@
+//
+// AppDelegate.m
+// SocketDemo
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import "AppDelegate.h"
+
+@interface AppDelegate ()
+
+@end
+
+@implementation AppDelegate
+
+
+- (BOOL)application:(UIApplication *)application didFinishLaunchingWithOptions:(NSDictionary *)launchOptions {
+ // Override point for customization after application launch.
+ return YES;
+}
+
+
+- (void)applicationWillResignActive:(UIApplication *)application {
+ // Sent when the application is about to move from active to inactive state. This can occur for certain types of temporary interruptions (such as an incoming phone call or SMS message) or when the user quits the application and it begins the transition to the background state.
+ // Use this method to pause ongoing tasks, disable timers, and invalidate graphics rendering callbacks. Games should use this method to pause the game.
+}
+
+
+- (void)applicationDidEnterBackground:(UIApplication *)application {
+ // Use this method to release shared resources, save user data, invalidate timers, and store enough application state information to restore your application to its current state in case it is terminated later.
+ // If your application supports background execution, this method is called instead of applicationWillTerminate: when the user quits.
+}
+
+
+- (void)applicationWillEnterForeground:(UIApplication *)application {
+ // Called as part of the transition from the background to the active state; here you can undo many of the changes made on entering the background.
+}
+
+
+- (void)applicationDidBecomeActive:(UIApplication *)application {
+ // Restart any tasks that were paused (or not yet started) while the application was inactive. If the application was previously in the background, optionally refresh the user interface.
+}
+
+
+- (void)applicationWillTerminate:(UIApplication *)application {
+ // Called when the application is about to terminate. Save data if appropriate. See also applicationDidEnterBackground:.
+}
+
+
+@end
diff --git a/SocketDemo/SocketDemo/Assets.xcassets/AppIcon.appiconset/Contents.json b/SocketDemo/SocketDemo/Assets.xcassets/AppIcon.appiconset/Contents.json
new file mode 100644
index 0000000..118c98f
--- /dev/null
+++ b/SocketDemo/SocketDemo/Assets.xcassets/AppIcon.appiconset/Contents.json
@@ -0,0 +1,38 @@
+{
+ "images" : [
+ {
+ "idiom" : "iphone",
+ "size" : "29x29",
+ "scale" : "2x"
+ },
+ {
+ "idiom" : "iphone",
+ "size" : "29x29",
+ "scale" : "3x"
+ },
+ {
+ "idiom" : "iphone",
+ "size" : "40x40",
+ "scale" : "2x"
+ },
+ {
+ "idiom" : "iphone",
+ "size" : "40x40",
+ "scale" : "3x"
+ },
+ {
+ "idiom" : "iphone",
+ "size" : "60x60",
+ "scale" : "2x"
+ },
+ {
+ "idiom" : "iphone",
+ "size" : "60x60",
+ "scale" : "3x"
+ }
+ ],
+ "info" : {
+ "version" : 1,
+ "author" : "xcode"
+ }
+}
\ No newline at end of file
diff --git a/SocketDemo/SocketDemo/Base.lproj/LaunchScreen.storyboard b/SocketDemo/SocketDemo/Base.lproj/LaunchScreen.storyboard
new file mode 100644
index 0000000..fdf3f97
--- /dev/null
+++ b/SocketDemo/SocketDemo/Base.lproj/LaunchScreen.storyboard
@@ -0,0 +1,27 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11134" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" launchScreen="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="01J-lp-oVM">
+ <dependencies>
+ <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11106"/>
+ <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+ </dependencies>
+ <scenes>
+ <!--View Controller-->
+ <scene sceneID="EHf-IW-A2E">
+ <objects>
+ <viewController id="01J-lp-oVM" sceneMemberID="viewController">
+ <layoutGuides>
+ <viewControllerLayoutGuide type="top" id="Llm-lL-Icb"/>
+ <viewControllerLayoutGuide type="bottom" id="xb3-aO-Qok"/>
+ </layoutGuides>
+ <view key="view" contentMode="scaleToFill" id="Ze5-6b-2t3">
+ <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+ <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+ <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+ </view>
+ </viewController>
+ <placeholder placeholderIdentifier="IBFirstResponder" id="iYj-Kq-Ea1" userLabel="First Responder" sceneMemberID="firstResponder"/>
+ </objects>
+ <point key="canvasLocation" x="53" y="375"/>
+ </scene>
+ </scenes>
+</document>
diff --git a/SocketDemo/SocketDemo/Base.lproj/Main.storyboard b/SocketDemo/SocketDemo/Base.lproj/Main.storyboard
new file mode 100644
index 0000000..4529698
--- /dev/null
+++ b/SocketDemo/SocketDemo/Base.lproj/Main.storyboard
@@ -0,0 +1,26 @@
+<?xml version="1.0" encoding="UTF-8" standalone="no"?>
+<document type="com.apple.InterfaceBuilder3.CocoaTouch.Storyboard.XIB" version="3.0" toolsVersion="11134" systemVersion="15F34" targetRuntime="iOS.CocoaTouch" propertyAccessControl="none" useAutolayout="YES" useTraitCollections="YES" colorMatched="YES" initialViewController="BYZ-38-t0r">
+ <dependencies>
+ <plugIn identifier="com.apple.InterfaceBuilder.IBCocoaTouchPlugin" version="11106"/>
+ <capability name="documents saved in the Xcode 8 format" minToolsVersion="8.0"/>
+ </dependencies>
+ <scenes>
+ <!--View Controller-->
+ <scene sceneID="tne-QT-ifu">
+ <objects>
+ <viewController id="BYZ-38-t0r" customClass="ViewController" customModuleProvider="" sceneMemberID="viewController">
+ <layoutGuides>
+ <viewControllerLayoutGuide type="top" id="y3c-jy-aDJ"/>
+ <viewControllerLayoutGuide type="bottom" id="wfy-db-euE"/>
+ </layoutGuides>
+ <view key="view" contentMode="scaleToFill" id="8bC-Xf-vdC">
+ <rect key="frame" x="0.0" y="0.0" width="375" height="667"/>
+ <autoresizingMask key="autoresizingMask" widthSizable="YES" heightSizable="YES"/>
+ <color key="backgroundColor" red="1" green="1" blue="1" alpha="1" colorSpace="custom" customColorSpace="sRGB"/>
+ </view>
+ </viewController>
+ <placeholder placeholderIdentifier="IBFirstResponder" id="dkx-z0-nzr" sceneMemberID="firstResponder"/>
+ </objects>
+ </scene>
+ </scenes>
+</document>
diff --git a/SocketDemo/SocketDemo/Info.plist b/SocketDemo/SocketDemo/Info.plist
new file mode 100644
index 0000000..38e98af
--- /dev/null
+++ b/SocketDemo/SocketDemo/Info.plist
@@ -0,0 +1,38 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
+<plist version="1.0">
+<dict>
+ <key>CFBundleDevelopmentRegion</key>
+ <string>en</string>
+ <key>CFBundleExecutable</key>
+ <string>$(EXECUTABLE_NAME)</string>
+ <key>CFBundleIdentifier</key>
+ <string>$(PRODUCT_BUNDLE_IDENTIFIER)</string>
+ <key>CFBundleInfoDictionaryVersion</key>
+ <string>6.0</string>
+ <key>CFBundleName</key>
+ <string>$(PRODUCT_NAME)</string>
+ <key>CFBundlePackageType</key>
+ <string>APPL</string>
+ <key>CFBundleShortVersionString</key>
+ <string>1.0</string>
+ <key>CFBundleVersion</key>
+ <string>1</string>
+ <key>LSRequiresIPhoneOS</key>
+ <true/>
+ <key>UILaunchStoryboardName</key>
+ <string>LaunchScreen</string>
+ <key>UIMainStoryboardFile</key>
+ <string>Main</string>
+ <key>UIRequiredDeviceCapabilities</key>
+ <array>
+ <string>armv7</string>
+ </array>
+ <key>UISupportedInterfaceOrientations</key>
+ <array>
+ <string>UIInterfaceOrientationPortrait</string>
+ <string>UIInterfaceOrientationLandscapeLeft</string>
+ <string>UIInterfaceOrientationLandscapeRight</string>
+ </array>
+</dict>
+</plist>
diff --git a/SocketDemo/SocketDemo/ViewController.h b/SocketDemo/SocketDemo/ViewController.h
new file mode 100644
index 0000000..5f68cfa
--- /dev/null
+++ b/SocketDemo/SocketDemo/ViewController.h
@@ -0,0 +1,15 @@
+//
+// ViewController.h
+// SocketDemo
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+
+@interface ViewController : UIViewController
+
+
+@end
+
diff --git a/SocketDemo/SocketDemo/ViewController.m b/SocketDemo/SocketDemo/ViewController.m
new file mode 100644
index 0000000..1d2e1e0
--- /dev/null
+++ b/SocketDemo/SocketDemo/ViewController.m
@@ -0,0 +1,62 @@
+//
+// ViewController.m
+// SocketDemo
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import "ViewController.h"
+#import "Socket.h"
+@interface ViewController ()
+
+@end
+
+@implementation ViewController
+
+- (void)viewDidLoad {
+ [super viewDidLoad];
+ [self connectSocket];
+}
+
+-(void)connectSocket
+{
+ //���������������������
+ [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(insertMessage:) name:SocketNewMessageNotification object:nil];
+ //socket������������
+ [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(socketConnectError) name:SocketConnectErrorNotification object:nil];
+ //socket������������
+ [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(socketConnectSuccess) name:SocketConnectSuccessNotification object:nil];
+ [Socket sharedInstance].socketHost = @"114.55.179.185";// host������
+ [Socket sharedInstance].socketPort = 6789;// port������
+ // ���������������������������������
+ [Socket sharedInstance].socket.userData = SocketOfflineByUser;
+ [[Socket sharedInstance] cutOffSocket];
+ // ���������������������������������������������������������������socket������������������������������
+ [[Socket sharedInstance] socketConnectHost:^{
+ }];
+ [Socket sharedInstance].socket.userData = SocketOfflineByServer;
+}
+
+-(void)insertMessage:(NSNotification*)noti
+{
+
+}
+
+-(void)socketConnectSuccess
+{
+
+}
+
+-(void)socketConnectError
+{
+
+}
+
+- (void)didReceiveMemoryWarning {
+ [super didReceiveMemoryWarning];
+ // Dispose of any resources that can be recreated.
+}
+
+
+@end
diff --git a/SocketDemo/SocketDemo/main.m b/SocketDemo/SocketDemo/main.m
new file mode 100644
index 0000000..72d6b8c
--- /dev/null
+++ b/SocketDemo/SocketDemo/main.m
@@ -0,0 +1,16 @@
+//
+// main.m
+// SocketDemo
+//
+// Created by Apple on 16/9/22.
+// Copyright �� 2016��� Apple. All rights reserved.
+//
+
+#import <UIKit/UIKit.h>
+#import "AppDelegate.h"
+
+int main(int argc, char * argv[]) {
+ @autoreleasepool {
+ return UIApplicationMain(argc, argv, nil, NSStringFromClass([AppDelegate class]));
+ }
+}
diff --git a/SocketDemo/Utils/AFNetworking/AFHTTPSessionManager.h b/SocketDemo/Utils/AFNetworking/AFHTTPSessionManager.h
new file mode 100755
index 0000000..55ed92e
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFHTTPSessionManager.h
@@ -0,0 +1,295 @@
+// AFHTTPSessionManager.h
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#if !TARGET_OS_WATCH
+#import <SystemConfiguration/SystemConfiguration.h>
+#endif
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS || TARGET_OS_WATCH || TARGET_OS_TV
+#import <MobileCoreServices/MobileCoreServices.h>
+#else
+#import <CoreServices/CoreServices.h>
+#endif
+
+#import "AFURLSessionManager.h"
+
+/**
+ `AFHTTPSessionManager` is a subclass of `AFURLSessionManager` with convenience methods for making HTTP requests. When a `baseURL` is provided, requests made with the `GET` / `POST` / et al. convenience methods can be made with relative paths.
+
+ ## Subclassing Notes
+
+ Developers targeting iOS 7 or Mac OS X 10.9 or later that deal extensively with a web service are encouraged to subclass `AFHTTPSessionManager`, providing a class method that returns a shared singleton object on which authentication and other configuration can be shared across the application.
+
+ For developers targeting iOS 6 or Mac OS X 10.8 or earlier, `AFHTTPRequestOperationManager` may be used to similar effect.
+
+ ## Methods to Override
+
+ To change the behavior of all data task operation construction, which is also used in the `GET` / `POST` / et al. convenience methods, override `dataTaskWithRequest:completionHandler:`.
+
+ ## Serialization
+
+ Requests created by an HTTP client will contain default headers and encode parameters according to the `requestSerializer` property, which is an object conforming to `<AFURLRequestSerialization>`.
+
+ Responses received from the server are automatically validated and serialized by the `responseSerializers` property, which is an object conforming to `<AFURLResponseSerialization>`
+
+ ## URL Construction Using Relative Paths
+
+ For HTTP convenience methods, the request serializer constructs URLs from the path relative to the `-baseURL`, using `NSURL +URLWithString:relativeToURL:`, when provided. If `baseURL` is `nil`, `path` needs to resolve to a valid `NSURL` object using `NSURL +URLWithString:`.
+
+ Below are a few examples of how `baseURL` and relative paths interact:
+
+ NSURL *baseURL = [NSURL URLWithString:@"http://example.com/v1/"];
+ [NSURL URLWithString:@"foo" relativeToURL:baseURL]; // http://example.com/v1/foo
+ [NSURL URLWithString:@"foo?bar=baz" relativeToURL:baseURL]; // http://example.com/v1/foo?bar=baz
+ [NSURL URLWithString:@"/foo" relativeToURL:baseURL]; // http://example.com/foo
+ [NSURL URLWithString:@"foo/" relativeToURL:baseURL]; // http://example.com/v1/foo
+ [NSURL URLWithString:@"/foo/" relativeToURL:baseURL]; // http://example.com/foo/
+ [NSURL URLWithString:@"http://example2.com/" relativeToURL:baseURL]; // http://example2.com/
+
+ Also important to note is that a trailing slash will be added to any `baseURL` without one. This would otherwise cause unexpected behavior when constructing URLs using paths without a leading slash.
+
+ @warning Managers for background sessions must be owned for the duration of their use. This can be accomplished by creating an application-wide or shared singleton instance.
+ */
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface AFHTTPSessionManager : AFURLSessionManager <NSSecureCoding, NSCopying>
+
+/**
+ The URL used to construct requests from relative paths in methods like `requestWithMethod:URLString:parameters:`, and the `GET` / `POST` / et al. convenience methods.
+ */
+@property (readonly, nonatomic, strong, nullable) NSURL *baseURL;
+
+/**
+ Requests created with `requestWithMethod:URLString:parameters:` & `multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:` are constructed with a set of default headers using a parameter serialization specified by this property. By default, this is set to an instance of `AFHTTPRequestSerializer`, which serializes query string parameters for `GET`, `HEAD`, and `DELETE` requests, or otherwise URL-form-encodes HTTP message bodies.
+
+ @warning `requestSerializer` must not be `nil`.
+ */
+@property (nonatomic, strong) AFHTTPRequestSerializer <AFURLRequestSerialization> * requestSerializer;
+
+/**
+ Responses sent from the server in data tasks created with `dataTaskWithRequest:success:failure:` and run using the `GET` / `POST` / et al. convenience methods are automatically validated and serialized by the response serializer. By default, this property is set to an instance of `AFJSONResponseSerializer`.
+
+ @warning `responseSerializer` must not be `nil`.
+ */
+@property (nonatomic, strong) AFHTTPResponseSerializer <AFURLResponseSerialization> * responseSerializer;
+
+///---------------------
+/// @name Initialization
+///---------------------
+
+/**
+ Creates and returns an `AFHTTPSessionManager` object.
+ */
++ (instancetype)manager;
+
+/**
+ Initializes an `AFHTTPSessionManager` object with the specified base URL.
+
+ @param url The base URL for the HTTP client.
+
+ @return The newly-initialized HTTP client
+ */
+- (instancetype)initWithBaseURL:(nullable NSURL *)url;
+
+/**
+ Initializes an `AFHTTPSessionManager` object with the specified base URL.
+
+ This is the designated initializer.
+
+ @param url The base URL for the HTTP client.
+ @param configuration The configuration used to create the managed session.
+
+ @return The newly-initialized HTTP client
+ */
+- (instancetype)initWithBaseURL:(nullable NSURL *)url
+ sessionConfiguration:(nullable NSURLSessionConfiguration *)configuration NS_DESIGNATED_INITIALIZER;
+
+///---------------------------
+/// @name Making HTTP Requests
+///---------------------------
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `GET` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)GET:(NSString *)URLString
+ parameters:(nullable id)parameters
+ success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure DEPRECATED_ATTRIBUTE;
+
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `GET` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param progress A block object to be executed when the download progress is updated. Note this block is called on the session queue, not the main queue.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:uploadProgress:downloadProgress:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)GET:(NSString *)URLString
+ parameters:(nullable id)parameters
+ progress:(nullable void (^)(NSProgress *downloadProgress)) downloadProgress
+ success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `HEAD` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes a single arguments: the data task.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)HEAD:(NSString *)URLString
+ parameters:(nullable id)parameters
+ success:(nullable void (^)(NSURLSessionDataTask *task))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `POST` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)POST:(NSString *)URLString
+ parameters:(nullable id)parameters
+ success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure DEPRECATED_ATTRIBUTE;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `POST` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param progress A block object to be executed when the upload progress is updated. Note this block is called on the session queue, not the main queue.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:uploadProgress:downloadProgress:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)POST:(NSString *)URLString
+ parameters:(nullable id)parameters
+ progress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgress
+ success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a multipart `POST` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param block A block that takes a single argument and appends data to the HTTP body. The block argument is an object adopting the `AFMultipartFormData` protocol.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)POST:(NSString *)URLString
+ parameters:(nullable id)parameters
+ constructingBodyWithBlock:(nullable void (^)(id <AFMultipartFormData> formData))block
+ success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure DEPRECATED_ATTRIBUTE;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a multipart `POST` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param block A block that takes a single argument and appends data to the HTTP body. The block argument is an object adopting the `AFMultipartFormData` protocol.
+ @param progress A block object to be executed when the upload progress is updated. Note this block is called on the session queue, not the main queue.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:uploadProgress:downloadProgress:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)POST:(NSString *)URLString
+ parameters:(nullable id)parameters
+ constructingBodyWithBlock:(nullable void (^)(id <AFMultipartFormData> formData))block
+ progress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgress
+ success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `PUT` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)PUT:(NSString *)URLString
+ parameters:(nullable id)parameters
+ success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `PATCH` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)PATCH:(NSString *)URLString
+ parameters:(nullable id)parameters
+ success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;
+
+/**
+ Creates and runs an `NSURLSessionDataTask` with a `DELETE` request.
+
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded according to the client request serializer.
+ @param success A block object to be executed when the task finishes successfully. This block has no return value and takes two arguments: the data task, and the response object created by the client response serializer.
+ @param failure A block object to be executed when the task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a two arguments: the data task and the error describing the network or parsing error that occurred.
+
+ @see -dataTaskWithRequest:completionHandler:
+ */
+- (nullable NSURLSessionDataTask *)DELETE:(NSString *)URLString
+ parameters:(nullable id)parameters
+ success:(nullable void (^)(NSURLSessionDataTask *task, id _Nullable responseObject))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable task, NSError *error))failure;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/SocketDemo/Utils/AFNetworking/AFHTTPSessionManager.m b/SocketDemo/Utils/AFNetworking/AFHTTPSessionManager.m
new file mode 100755
index 0000000..712d6ee
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFHTTPSessionManager.m
@@ -0,0 +1,366 @@
+// AFHTTPSessionManager.m
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFHTTPSessionManager.h"
+
+#import "AFURLRequestSerialization.h"
+#import "AFURLResponseSerialization.h"
+
+#import <Availability.h>
+#import <TargetConditionals.h>
+#import <Security/Security.h>
+
+#import <netinet/in.h>
+#import <netinet6/in6.h>
+#import <arpa/inet.h>
+#import <ifaddrs.h>
+#import <netdb.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+#import <UIKit/UIKit.h>
+#elif TARGET_OS_WATCH
+#import <WatchKit/WatchKit.h>
+#endif
+
+@interface AFHTTPSessionManager ()
+@property (readwrite, nonatomic, strong) NSURL *baseURL;
+@end
+
+@implementation AFHTTPSessionManager
+@dynamic responseSerializer;
+
++ (instancetype)manager {
+ return [[[self class] alloc] initWithBaseURL:nil];
+}
+
+- (instancetype)init {
+ return [self initWithBaseURL:nil];
+}
+
+- (instancetype)initWithBaseURL:(NSURL *)url {
+ return [self initWithBaseURL:url sessionConfiguration:nil];
+}
+
+- (instancetype)initWithSessionConfiguration:(NSURLSessionConfiguration *)configuration {
+ return [self initWithBaseURL:nil sessionConfiguration:configuration];
+}
+
+- (instancetype)initWithBaseURL:(NSURL *)url
+ sessionConfiguration:(NSURLSessionConfiguration *)configuration
+{
+ self = [super initWithSessionConfiguration:configuration];
+ if (!self) {
+ return nil;
+ }
+
+ // Ensure terminal slash for baseURL path, so that NSURL +URLWithString:relativeToURL: works as expected
+ if ([[url path] length] > 0 && ![[url absoluteString] hasSuffix:@"/"]) {
+ url = [url URLByAppendingPathComponent:@""];
+ }
+
+ self.baseURL = url;
+
+ self.requestSerializer = [AFHTTPRequestSerializer serializer];
+ self.responseSerializer = [AFJSONResponseSerializer serializer];
+
+ return self;
+}
+
+#pragma mark -
+
+- (void)setRequestSerializer:(AFHTTPRequestSerializer <AFURLRequestSerialization> *)requestSerializer {
+ NSParameterAssert(requestSerializer);
+
+ _requestSerializer = requestSerializer;
+}
+
+- (void)setResponseSerializer:(AFHTTPResponseSerializer <AFURLResponseSerialization> *)responseSerializer {
+ NSParameterAssert(responseSerializer);
+
+ [super setResponseSerializer:responseSerializer];
+}
+
+#pragma mark -
+
+- (NSURLSessionDataTask *)GET:(NSString *)URLString
+ parameters:(id)parameters
+ success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+ failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+
+ return [self GET:URLString parameters:parameters progress:nil success:success failure:failure];
+}
+
+- (NSURLSessionDataTask *)GET:(NSString *)URLString
+ parameters:(id)parameters
+ progress:(void (^)(NSProgress * _Nonnull))downloadProgress
+ success:(void (^)(NSURLSessionDataTask * _Nonnull, id _Nullable))success
+ failure:(void (^)(NSURLSessionDataTask * _Nullable, NSError * _Nonnull))failure
+{
+
+ NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"GET"
+ URLString:URLString
+ parameters:parameters
+ uploadProgress:nil
+ downloadProgress:downloadProgress
+ success:success
+ failure:failure];
+
+ [dataTask resume];
+
+ return dataTask;
+}
+
+- (NSURLSessionDataTask *)HEAD:(NSString *)URLString
+ parameters:(id)parameters
+ success:(void (^)(NSURLSessionDataTask *task))success
+ failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+ NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"HEAD" URLString:URLString parameters:parameters uploadProgress:nil downloadProgress:nil success:^(NSURLSessionDataTask *task, __unused id responseObject) {
+ if (success) {
+ success(task);
+ }
+ } failure:failure];
+
+ [dataTask resume];
+
+ return dataTask;
+}
+
+- (NSURLSessionDataTask *)POST:(NSString *)URLString
+ parameters:(id)parameters
+ success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+ failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+ return [self POST:URLString parameters:parameters progress:nil success:success failure:failure];
+}
+
+- (NSURLSessionDataTask *)POST:(NSString *)URLString
+ parameters:(id)parameters
+ progress:(void (^)(NSProgress * _Nonnull))uploadProgress
+ success:(void (^)(NSURLSessionDataTask * _Nonnull, id _Nullable))success
+ failure:(void (^)(NSURLSessionDataTask * _Nullable, NSError * _Nonnull))failure
+{
+ NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"POST" URLString:URLString parameters:parameters uploadProgress:uploadProgress downloadProgress:nil success:success failure:failure];
+
+ [dataTask resume];
+
+ return dataTask;
+}
+
+- (NSURLSessionDataTask *)POST:(NSString *)URLString
+ parameters:(nullable id)parameters
+ constructingBodyWithBlock:(nullable void (^)(id<AFMultipartFormData> _Nonnull))block
+ success:(nullable void (^)(NSURLSessionDataTask * _Nonnull, id _Nullable))success
+ failure:(nullable void (^)(NSURLSessionDataTask * _Nullable, NSError * _Nonnull))failure
+{
+ return [self POST:URLString parameters:parameters constructingBodyWithBlock:block progress:nil success:success failure:failure];
+}
+
+- (NSURLSessionDataTask *)POST:(NSString *)URLString
+ parameters:(id)parameters
+ constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block
+ progress:(nullable void (^)(NSProgress * _Nonnull))uploadProgress
+ success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+ failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+ NSError *serializationError = nil;
+ NSMutableURLRequest *request = [self.requestSerializer multipartFormRequestWithMethod:@"POST" URLString:[[NSURL URLWithString:URLString relativeToURL:self.baseURL] absoluteString] parameters:parameters constructingBodyWithBlock:block error:&serializationError];
+
+ if (serializationError) {
+ if (failure) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+ dispatch_async(self.completionQueue ?: dispatch_get_main_queue(), ^{
+ failure(nil, serializationError);
+ });
+#pragma clang diagnostic pop
+ }
+
+ return nil;
+ }
+
+ __block NSURLSessionDataTask *task = [self uploadTaskWithStreamedRequest:request progress:uploadProgress completionHandler:^(NSURLResponse * __unused response, id responseObject, NSError *error) {
+ if (error) {
+ if (failure) {
+ failure(task, error);
+ }
+ } else {
+ if (success) {
+ success(task, responseObject);
+ }
+ }
+ }];
+
+ [task resume];
+
+ return task;
+}
+
+- (NSURLSessionDataTask *)PUT:(NSString *)URLString
+ parameters:(id)parameters
+ success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+ failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+ NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"PUT" URLString:URLString parameters:parameters uploadProgress:nil downloadProgress:nil success:success failure:failure];
+
+ [dataTask resume];
+
+ return dataTask;
+}
+
+- (NSURLSessionDataTask *)PATCH:(NSString *)URLString
+ parameters:(id)parameters
+ success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+ failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+ NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"PATCH" URLString:URLString parameters:parameters uploadProgress:nil downloadProgress:nil success:success failure:failure];
+
+ [dataTask resume];
+
+ return dataTask;
+}
+
+- (NSURLSessionDataTask *)DELETE:(NSString *)URLString
+ parameters:(id)parameters
+ success:(void (^)(NSURLSessionDataTask *task, id responseObject))success
+ failure:(void (^)(NSURLSessionDataTask *task, NSError *error))failure
+{
+ NSURLSessionDataTask *dataTask = [self dataTaskWithHTTPMethod:@"DELETE" URLString:URLString parameters:parameters uploadProgress:nil downloadProgress:nil success:success failure:failure];
+
+ [dataTask resume];
+
+ return dataTask;
+}
+
+- (NSURLSessionDataTask *)dataTaskWithHTTPMethod:(NSString *)method
+ URLString:(NSString *)URLString
+ parameters:(id)parameters
+ uploadProgress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgress
+ downloadProgress:(nullable void (^)(NSProgress *downloadProgress)) downloadProgress
+ success:(void (^)(NSURLSessionDataTask *, id))success
+ failure:(void (^)(NSURLSessionDataTask *, NSError *))failure
+{
+ NSError *serializationError = nil;
+ NSMutableURLRequest *request = [self.requestSerializer requestWithMethod:method URLString:[[NSURL URLWithString:URLString relativeToURL:self.baseURL] absoluteString] parameters:parameters error:&serializationError];
+ NSLog(@"%@",request.URL);
+ //������������������������������������������������������������������
+ NSURLCache * cache = [NSURLCache sharedURLCache];
+ NSCachedURLResponse * response =[cache cachedResponseForRequest:request];
+ if (serializationError) {
+ if (failure) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+ dispatch_async(self.completionQueue ?: dispatch_get_main_queue(), ^{
+ failure(nil, serializationError);
+ });
+#pragma clang diagnostic pop
+ }
+
+ return nil;
+ }
+
+ __block NSURLSessionDataTask *dataTask = nil;
+ dataTask = [self dataTaskWithRequest:request
+ uploadProgress:uploadProgress
+ downloadProgress:downloadProgress
+ completionHandler:^(NSURLResponse * __unused response, id responseObject, NSError *error) {
+ if (error) {
+ if (failure) {
+ failure(dataTask, error);
+ }
+ } else {
+ if (success) {
+ success(dataTask, responseObject);
+ }
+ }
+ }];
+
+ return dataTask;
+}
+
+#pragma mark - NSObject
+
+- (NSString *)description {
+ return [NSString stringWithFormat:@"<%@: %p, baseURL: %@, session: %@, operationQueue: %@>", NSStringFromClass([self class]), self, [self.baseURL absoluteString], self.session, self.operationQueue];
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+ return YES;
+}
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ NSURL *baseURL = [decoder decodeObjectOfClass:[NSURL class] forKey:NSStringFromSelector(@selector(baseURL))];
+ NSURLSessionConfiguration *configuration = [decoder decodeObjectOfClass:[NSURLSessionConfiguration class] forKey:@"sessionConfiguration"];
+ if (!configuration) {
+ NSString *configurationIdentifier = [decoder decodeObjectOfClass:[NSString class] forKey:@"identifier"];
+ if (configurationIdentifier) {
+#if (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 80000) || (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 1100)
+ configuration = [NSURLSessionConfiguration backgroundSessionConfigurationWithIdentifier:configurationIdentifier];
+#else
+ configuration = [NSURLSessionConfiguration backgroundSessionConfiguration:configurationIdentifier];
+#endif
+ }
+ }
+
+ self = [self initWithBaseURL:baseURL sessionConfiguration:configuration];
+ if (!self) {
+ return nil;
+ }
+
+ self.requestSerializer = [decoder decodeObjectOfClass:[AFHTTPRequestSerializer class] forKey:NSStringFromSelector(@selector(requestSerializer))];
+ self.responseSerializer = [decoder decodeObjectOfClass:[AFHTTPResponseSerializer class] forKey:NSStringFromSelector(@selector(responseSerializer))];
+ AFSecurityPolicy *decodedPolicy = [decoder decodeObjectOfClass:[AFSecurityPolicy class] forKey:NSStringFromSelector(@selector(securityPolicy))];
+ if (decodedPolicy) {
+ self.securityPolicy = decodedPolicy;
+ }
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [super encodeWithCoder:coder];
+
+ [coder encodeObject:self.baseURL forKey:NSStringFromSelector(@selector(baseURL))];
+ if ([self.session.configuration conformsToProtocol:@protocol(NSCoding)]) {
+ [coder encodeObject:self.session.configuration forKey:@"sessionConfiguration"];
+ } else {
+ [coder encodeObject:self.session.configuration.identifier forKey:@"identifier"];
+ }
+ [coder encodeObject:self.requestSerializer forKey:NSStringFromSelector(@selector(requestSerializer))];
+ [coder encodeObject:self.responseSerializer forKey:NSStringFromSelector(@selector(responseSerializer))];
+ [coder encodeObject:self.securityPolicy forKey:NSStringFromSelector(@selector(securityPolicy))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFHTTPSessionManager *HTTPClient = [[[self class] allocWithZone:zone] initWithBaseURL:self.baseURL sessionConfiguration:self.session.configuration];
+
+ HTTPClient.requestSerializer = [self.requestSerializer copyWithZone:zone];
+ HTTPClient.responseSerializer = [self.responseSerializer copyWithZone:zone];
+ HTTPClient.securityPolicy = [self.securityPolicy copyWithZone:zone];
+ return HTTPClient;
+}
+
+@end
diff --git a/SocketDemo/Utils/AFNetworking/AFNetworkReachabilityManager.h b/SocketDemo/Utils/AFNetworking/AFNetworkReachabilityManager.h
new file mode 100755
index 0000000..4cf0496
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFNetworkReachabilityManager.h
@@ -0,0 +1,206 @@
+// AFNetworkReachabilityManager.h
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#if !TARGET_OS_WATCH
+#import <SystemConfiguration/SystemConfiguration.h>
+
+typedef NS_ENUM(NSInteger, AFNetworkReachabilityStatus) {
+ AFNetworkReachabilityStatusUnknown = -1,
+ AFNetworkReachabilityStatusNotReachable = 0,
+ AFNetworkReachabilityStatusReachableViaWWAN = 1,
+ AFNetworkReachabilityStatusReachableViaWiFi = 2,
+};
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ `AFNetworkReachabilityManager` monitors the reachability of domains, and addresses for both WWAN and WiFi network interfaces.
+
+ Reachability can be used to determine background information about why a network operation failed, or to trigger a network operation retrying when a connection is established. It should not be used to prevent a user from initiating a network request, as it's possible that an initial request may be required to establish reachability.
+
+ See Apple's Reachability Sample Code (https://developer.apple.com/library/ios/samplecode/reachability/)
+
+ @warning Instances of `AFNetworkReachabilityManager` must be started with `-startMonitoring` before reachability status can be determined.
+ */
+@interface AFNetworkReachabilityManager : NSObject
+
+/**
+ The current network reachability status.
+ */
+@property (readonly, nonatomic, assign) AFNetworkReachabilityStatus networkReachabilityStatus;
+
+/**
+ Whether or not the network is currently reachable.
+ */
+@property (readonly, nonatomic, assign, getter = isReachable) BOOL reachable;
+
+/**
+ Whether or not the network is currently reachable via WWAN.
+ */
+@property (readonly, nonatomic, assign, getter = isReachableViaWWAN) BOOL reachableViaWWAN;
+
+/**
+ Whether or not the network is currently reachable via WiFi.
+ */
+@property (readonly, nonatomic, assign, getter = isReachableViaWiFi) BOOL reachableViaWiFi;
+
+///---------------------
+/// @name Initialization
+///---------------------
+
+/**
+ Returns the shared network reachability manager.
+ */
++ (instancetype)sharedManager;
+
+/**
+ Creates and returns a network reachability manager with the default socket address.
+
+ @return An initialized network reachability manager, actively monitoring the default socket address.
+ */
++ (instancetype)manager;
+
+/**
+ Creates and returns a network reachability manager for the specified domain.
+
+ @param domain The domain used to evaluate network reachability.
+
+ @return An initialized network reachability manager, actively monitoring the specified domain.
+ */
++ (instancetype)managerForDomain:(NSString *)domain;
+
+/**
+ Creates and returns a network reachability manager for the socket address.
+
+ @param address The socket address (`sockaddr_in6`) used to evaluate network reachability.
+
+ @return An initialized network reachability manager, actively monitoring the specified socket address.
+ */
++ (instancetype)managerForAddress:(const void *)address;
+
+/**
+ Initializes an instance of a network reachability manager from the specified reachability object.
+
+ @param reachability The reachability object to monitor.
+
+ @return An initialized network reachability manager, actively monitoring the specified reachability.
+ */
+- (instancetype)initWithReachability:(SCNetworkReachabilityRef)reachability NS_DESIGNATED_INITIALIZER;
+
+///--------------------------------------------------
+/// @name Starting & Stopping Reachability Monitoring
+///--------------------------------------------------
+
+/**
+ Starts monitoring for changes in network reachability status.
+ */
+- (void)startMonitoring;
+
+/**
+ Stops monitoring for changes in network reachability status.
+ */
+- (void)stopMonitoring;
+
+///-------------------------------------------------
+/// @name Getting Localized Reachability Description
+///-------------------------------------------------
+
+/**
+ Returns a localized string representation of the current network reachability status.
+ */
+- (NSString *)localizedNetworkReachabilityStatusString;
+
+///---------------------------------------------------
+/// @name Setting Network Reachability Change Callback
+///---------------------------------------------------
+
+/**
+ Sets a callback to be executed when the network availability of the `baseURL` host changes.
+
+ @param block A block object to be executed when the network availability of the `baseURL` host changes.. This block has no return value and takes a single argument which represents the various reachability states from the device to the `baseURL`.
+ */
+- (void)setReachabilityStatusChangeBlock:(nullable void (^)(AFNetworkReachabilityStatus status))block;
+
+@end
+
+///----------------
+/// @name Constants
+///----------------
+
+/**
+ ## Network Reachability
+
+ The following constants are provided by `AFNetworkReachabilityManager` as possible network reachability statuses.
+
+ enum {
+ AFNetworkReachabilityStatusUnknown,
+ AFNetworkReachabilityStatusNotReachable,
+ AFNetworkReachabilityStatusReachableViaWWAN,
+ AFNetworkReachabilityStatusReachableViaWiFi,
+ }
+
+ `AFNetworkReachabilityStatusUnknown`
+ The `baseURL` host reachability is not known.
+
+ `AFNetworkReachabilityStatusNotReachable`
+ The `baseURL` host cannot be reached.
+
+ `AFNetworkReachabilityStatusReachableViaWWAN`
+ The `baseURL` host can be reached via a cellular connection, such as EDGE or GPRS.
+
+ `AFNetworkReachabilityStatusReachableViaWiFi`
+ The `baseURL` host can be reached via a Wi-Fi connection.
+
+ ### Keys for Notification UserInfo Dictionary
+
+ Strings that are used as keys in a `userInfo` dictionary in a network reachability status change notification.
+
+ `AFNetworkingReachabilityNotificationStatusItem`
+ A key in the userInfo dictionary in a `AFNetworkingReachabilityDidChangeNotification` notification.
+ The corresponding value is an `NSNumber` object representing the `AFNetworkReachabilityStatus` value for the current reachability status.
+ */
+
+///--------------------
+/// @name Notifications
+///--------------------
+
+/**
+ Posted when network reachability changes.
+ This notification assigns no notification object. The `userInfo` dictionary contains an `NSNumber` object under the `AFNetworkingReachabilityNotificationStatusItem` key, representing the `AFNetworkReachabilityStatus` value for the current network reachability.
+
+ @warning In order for network reachability to be monitored, include the `SystemConfiguration` framework in the active target's "Link Binary With Library" build phase, and add `#import <SystemConfiguration/SystemConfiguration.h>` to the header prefix of the project (`Prefix.pch`).
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingReachabilityDidChangeNotification;
+FOUNDATION_EXPORT NSString * const AFNetworkingReachabilityNotificationStatusItem;
+
+///--------------------
+/// @name Functions
+///--------------------
+
+/**
+ Returns a localized string representation of an `AFNetworkReachabilityStatus` value.
+ */
+FOUNDATION_EXPORT NSString * AFStringFromNetworkReachabilityStatus(AFNetworkReachabilityStatus status);
+
+NS_ASSUME_NONNULL_END
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/AFNetworkReachabilityManager.m b/SocketDemo/Utils/AFNetworking/AFNetworkReachabilityManager.m
new file mode 100755
index 0000000..5fba0f7
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFNetworkReachabilityManager.m
@@ -0,0 +1,260 @@
+// AFNetworkReachabilityManager.m
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFNetworkReachabilityManager.h"
+#if !TARGET_OS_WATCH
+
+#import <netinet/in.h>
+#import <netinet6/in6.h>
+#import <arpa/inet.h>
+#import <ifaddrs.h>
+#import <netdb.h>
+
+NSString * const AFNetworkingReachabilityDidChangeNotification = @"com.alamofire.networking.reachability.change";
+NSString * const AFNetworkingReachabilityNotificationStatusItem = @"AFNetworkingReachabilityNotificationStatusItem";
+
+typedef void (^AFNetworkReachabilityStatusBlock)(AFNetworkReachabilityStatus status);
+
+NSString * AFStringFromNetworkReachabilityStatus(AFNetworkReachabilityStatus status) {
+ switch (status) {
+ case AFNetworkReachabilityStatusNotReachable:
+ return NSLocalizedStringFromTable(@"Not Reachable", @"AFNetworking", nil);
+ case AFNetworkReachabilityStatusReachableViaWWAN:
+ return NSLocalizedStringFromTable(@"Reachable via WWAN", @"AFNetworking", nil);
+ case AFNetworkReachabilityStatusReachableViaWiFi:
+ return NSLocalizedStringFromTable(@"Reachable via WiFi", @"AFNetworking", nil);
+ case AFNetworkReachabilityStatusUnknown:
+ default:
+ return NSLocalizedStringFromTable(@"Unknown", @"AFNetworking", nil);
+ }
+}
+
+static AFNetworkReachabilityStatus AFNetworkReachabilityStatusForFlags(SCNetworkReachabilityFlags flags) {
+ BOOL isReachable = ((flags & kSCNetworkReachabilityFlagsReachable) != 0);
+ BOOL needsConnection = ((flags & kSCNetworkReachabilityFlagsConnectionRequired) != 0);
+ BOOL canConnectionAutomatically = (((flags & kSCNetworkReachabilityFlagsConnectionOnDemand ) != 0) || ((flags & kSCNetworkReachabilityFlagsConnectionOnTraffic) != 0));
+ BOOL canConnectWithoutUserInteraction = (canConnectionAutomatically && (flags & kSCNetworkReachabilityFlagsInterventionRequired) == 0);
+ BOOL isNetworkReachable = (isReachable && (!needsConnection || canConnectWithoutUserInteraction));
+
+ AFNetworkReachabilityStatus status = AFNetworkReachabilityStatusUnknown;
+ if (isNetworkReachable == NO) {
+ status = AFNetworkReachabilityStatusNotReachable;
+ }
+#if TARGET_OS_IPHONE
+ else if ((flags & kSCNetworkReachabilityFlagsIsWWAN) != 0) {
+ status = AFNetworkReachabilityStatusReachableViaWWAN;
+ }
+#endif
+ else {
+ status = AFNetworkReachabilityStatusReachableViaWiFi;
+ }
+
+ return status;
+}
+
+/**
+ * Queue a status change notification for the main thread.
+ *
+ * This is done to ensure that the notifications are received in the same order
+ * as they are sent. If notifications are sent directly, it is possible that
+ * a queued notification (for an earlier status condition) is processed after
+ * the later update, resulting in the listener being left in the wrong state.
+ */
+static void AFPostReachabilityStatusChange(SCNetworkReachabilityFlags flags, AFNetworkReachabilityStatusBlock block) {
+ AFNetworkReachabilityStatus status = AFNetworkReachabilityStatusForFlags(flags);
+ dispatch_async(dispatch_get_main_queue(), ^{
+ if (block) {
+ block(status);
+ }
+ NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+ NSDictionary *userInfo = @{ AFNetworkingReachabilityNotificationStatusItem: @(status) };
+ [notificationCenter postNotificationName:AFNetworkingReachabilityDidChangeNotification object:nil userInfo:userInfo];
+ });
+}
+
+static void AFNetworkReachabilityCallback(SCNetworkReachabilityRef __unused target, SCNetworkReachabilityFlags flags, void *info) {
+ AFPostReachabilityStatusChange(flags, (__bridge AFNetworkReachabilityStatusBlock)info);
+}
+
+
+static const void * AFNetworkReachabilityRetainCallback(const void *info) {
+ return Block_copy(info);
+}
+
+static void AFNetworkReachabilityReleaseCallback(const void *info) {
+ if (info) {
+ Block_release(info);
+ }
+}
+
+@interface AFNetworkReachabilityManager ()
+@property (readwrite, nonatomic, strong) id networkReachability;
+@property (readwrite, nonatomic, assign) AFNetworkReachabilityStatus networkReachabilityStatus;
+@property (readwrite, nonatomic, copy) AFNetworkReachabilityStatusBlock networkReachabilityStatusBlock;
+@end
+
+@implementation AFNetworkReachabilityManager
+
++ (instancetype)sharedManager {
+ static AFNetworkReachabilityManager *_sharedManager = nil;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ _sharedManager = [self manager];
+ });
+
+ return _sharedManager;
+}
+
+#ifndef __clang_analyzer__
++ (instancetype)managerForDomain:(NSString *)domain {
+ SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithName(kCFAllocatorDefault, [domain UTF8String]);
+
+ AFNetworkReachabilityManager *manager = [[self alloc] initWithReachability:reachability];
+
+ return manager;
+}
+#endif
+
+#ifndef __clang_analyzer__
++ (instancetype)managerForAddress:(const void *)address {
+ SCNetworkReachabilityRef reachability = SCNetworkReachabilityCreateWithAddress(kCFAllocatorDefault, (const struct sockaddr *)address);
+ AFNetworkReachabilityManager *manager = [[self alloc] initWithReachability:reachability];
+
+ return manager;
+}
+#endif
+
++ (instancetype)manager
+{
+#if (defined(__IPHONE_OS_VERSION_MIN_REQUIRED) && __IPHONE_OS_VERSION_MIN_REQUIRED >= 90000) || (defined(__MAC_OS_X_VERSION_MIN_REQUIRED) && __MAC_OS_X_VERSION_MIN_REQUIRED >= 101100)
+ struct sockaddr_in6 address;
+ bzero(&address, sizeof(address));
+ address.sin6_len = sizeof(address);
+ address.sin6_family = AF_INET6;
+#else
+ struct sockaddr_in address;
+ bzero(&address, sizeof(address));
+ address.sin_len = sizeof(address);
+ address.sin_family = AF_INET;
+#endif
+ return [self managerForAddress:&address];
+}
+
+- (instancetype)initWithReachability:(SCNetworkReachabilityRef)reachability {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.networkReachability = CFBridgingRelease(reachability);
+ self.networkReachabilityStatus = AFNetworkReachabilityStatusUnknown;
+
+ return self;
+}
+
+- (instancetype)init NS_UNAVAILABLE
+{
+ return nil;
+}
+
+- (void)dealloc {
+ [self stopMonitoring];
+}
+
+#pragma mark -
+
+- (BOOL)isReachable {
+ return [self isReachableViaWWAN] || [self isReachableViaWiFi];
+}
+
+- (BOOL)isReachableViaWWAN {
+ return self.networkReachabilityStatus == AFNetworkReachabilityStatusReachableViaWWAN;
+}
+
+- (BOOL)isReachableViaWiFi {
+ return self.networkReachabilityStatus == AFNetworkReachabilityStatusReachableViaWiFi;
+}
+
+#pragma mark -
+
+- (void)startMonitoring {
+ [self stopMonitoring];
+
+ if (!self.networkReachability) {
+ return;
+ }
+
+ __weak __typeof(self)weakSelf = self;
+ AFNetworkReachabilityStatusBlock callback = ^(AFNetworkReachabilityStatus status) {
+ __strong __typeof(weakSelf)strongSelf = weakSelf;
+
+ strongSelf.networkReachabilityStatus = status;
+ if (strongSelf.networkReachabilityStatusBlock) {
+ strongSelf.networkReachabilityStatusBlock(status);
+ }
+
+ };
+
+ id networkReachability = self.networkReachability;
+ SCNetworkReachabilityContext context = {0, (__bridge void *)callback, AFNetworkReachabilityRetainCallback, AFNetworkReachabilityReleaseCallback, NULL};
+ SCNetworkReachabilitySetCallback((__bridge SCNetworkReachabilityRef)networkReachability, AFNetworkReachabilityCallback, &context);
+ SCNetworkReachabilityScheduleWithRunLoop((__bridge SCNetworkReachabilityRef)networkReachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
+
+ dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_BACKGROUND, 0),^{
+ SCNetworkReachabilityFlags flags;
+ if (SCNetworkReachabilityGetFlags((__bridge SCNetworkReachabilityRef)networkReachability, &flags)) {
+ AFPostReachabilityStatusChange(flags, callback);
+ }
+ });
+}
+
+- (void)stopMonitoring {
+ if (!self.networkReachability) {
+ return;
+ }
+
+ SCNetworkReachabilityUnscheduleFromRunLoop((__bridge SCNetworkReachabilityRef)self.networkReachability, CFRunLoopGetMain(), kCFRunLoopCommonModes);
+}
+
+#pragma mark -
+
+- (NSString *)localizedNetworkReachabilityStatusString {
+ return AFStringFromNetworkReachabilityStatus(self.networkReachabilityStatus);
+}
+
+#pragma mark -
+
+- (void)setReachabilityStatusChangeBlock:(void (^)(AFNetworkReachabilityStatus status))block {
+ self.networkReachabilityStatusBlock = block;
+}
+
+#pragma mark - NSKeyValueObserving
+
++ (NSSet *)keyPathsForValuesAffectingValueForKey:(NSString *)key {
+ if ([key isEqualToString:@"reachable"] || [key isEqualToString:@"reachableViaWWAN"] || [key isEqualToString:@"reachableViaWiFi"]) {
+ return [NSSet setWithObject:@"networkReachabilityStatus"];
+ }
+
+ return [super keyPathsForValuesAffectingValueForKey:key];
+}
+
+@end
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/AFNetworking.h b/SocketDemo/Utils/AFNetworking/AFNetworking.h
new file mode 100755
index 0000000..e2fb2f4
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFNetworking.h
@@ -0,0 +1,41 @@
+// AFNetworking.h
+//
+// Copyright (c) 2013 AFNetworking (http://afnetworking.com/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#import <Availability.h>
+#import <TargetConditionals.h>
+
+#ifndef _AFNETWORKING_
+ #define _AFNETWORKING_
+
+ #import "AFURLRequestSerialization.h"
+ #import "AFURLResponseSerialization.h"
+ #import "AFSecurityPolicy.h"
+
+#if !TARGET_OS_WATCH
+ #import "AFNetworkReachabilityManager.h"
+#endif
+
+ #import "AFURLSessionManager.h"
+ #import "AFHTTPSessionManager.h"
+
+#endif /* _AFNETWORKING_ */
diff --git a/SocketDemo/Utils/AFNetworking/AFSecurityPolicy.h b/SocketDemo/Utils/AFNetworking/AFSecurityPolicy.h
new file mode 100755
index 0000000..90fa212
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFSecurityPolicy.h
@@ -0,0 +1,154 @@
+// AFSecurityPolicy.h
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#import <Security/Security.h>
+
+typedef NS_ENUM(NSUInteger, AFSSLPinningMode) {
+ AFSSLPinningModeNone,
+ AFSSLPinningModePublicKey,
+ AFSSLPinningModeCertificate,
+};
+
+/**
+ `AFSecurityPolicy` evaluates server trust against pinned X.509 certificates and public keys over secure connections.
+
+ Adding pinned SSL certificates to your app helps prevent man-in-the-middle attacks and other vulnerabilities. Applications dealing with sensitive customer data or financial information are strongly encouraged to route all communication over an HTTPS connection with SSL pinning configured and enabled.
+ */
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface AFSecurityPolicy : NSObject <NSSecureCoding, NSCopying>
+
+/**
+ The criteria by which server trust should be evaluated against the pinned SSL certificates. Defaults to `AFSSLPinningModeNone`.
+ */
+@property (readonly, nonatomic, assign) AFSSLPinningMode SSLPinningMode;
+
+/**
+ The certificates used to evaluate server trust according to the SSL pinning mode.
+
+ By default, this property is set to any (`.cer`) certificates included in the target compiling AFNetworking. Note that if you are using AFNetworking as embedded framework, no certificates will be pinned by default. Use `certificatesInBundle` to load certificates from your target, and then create a new policy by calling `policyWithPinningMode:withPinnedCertificates`.
+
+ Note that if pinning is enabled, `evaluateServerTrust:forDomain:` will return true if any pinned certificate matches.
+ */
+@property (nonatomic, strong, nullable) NSSet <NSData *> *pinnedCertificates;
+
+/**
+ Whether or not to trust servers with an invalid or expired SSL certificates. Defaults to `NO`.
+ */
+@property (nonatomic, assign) BOOL allowInvalidCertificates;
+
+/**
+ Whether or not to validate the domain name in the certificate's CN field. Defaults to `YES`.
+ */
+@property (nonatomic, assign) BOOL validatesDomainName;
+
+///-----------------------------------------
+/// @name Getting Certificates from the Bundle
+///-----------------------------------------
+
+/**
+ Returns any certificates included in the bundle. If you are using AFNetworking as an embedded framework, you must use this method to find the certificates you have included in your app bundle, and use them when creating your security policy by calling `policyWithPinningMode:withPinnedCertificates`.
+
+ @return The certificates included in the given bundle.
+ */
++ (NSSet <NSData *> *)certificatesInBundle:(NSBundle *)bundle;
+
+///-----------------------------------------
+/// @name Getting Specific Security Policies
+///-----------------------------------------
+
+/**
+ Returns the shared default security policy, which does not allow invalid certificates, validates domain name, and does not validate against pinned certificates or public keys.
+
+ @return The default security policy.
+ */
++ (instancetype)defaultPolicy;
+
+///---------------------
+/// @name Initialization
+///---------------------
+
+/**
+ Creates and returns a security policy with the specified pinning mode.
+
+ @param pinningMode The SSL pinning mode.
+
+ @return A new security policy.
+ */
++ (instancetype)policyWithPinningMode:(AFSSLPinningMode)pinningMode;
+
+/**
+ Creates and returns a security policy with the specified pinning mode.
+
+ @param pinningMode The SSL pinning mode.
+ @param pinnedCertificates The certificates to pin against.
+
+ @return A new security policy.
+ */
++ (instancetype)policyWithPinningMode:(AFSSLPinningMode)pinningMode withPinnedCertificates:(NSSet <NSData *> *)pinnedCertificates;
+
+///------------------------------
+/// @name Evaluating Server Trust
+///------------------------------
+
+/**
+ Whether or not the specified server trust should be accepted, based on the security policy.
+
+ This method should be used when responding to an authentication challenge from a server.
+
+ @param serverTrust The X.509 certificate trust of the server.
+ @param domain The domain of serverTrust. If `nil`, the domain will not be validated.
+
+ @return Whether or not to trust the server.
+ */
+- (BOOL)evaluateServerTrust:(SecTrustRef)serverTrust
+ forDomain:(nullable NSString *)domain;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+///----------------
+/// @name Constants
+///----------------
+
+/**
+ ## SSL Pinning Modes
+
+ The following constants are provided by `AFSSLPinningMode` as possible SSL pinning modes.
+
+ enum {
+ AFSSLPinningModeNone,
+ AFSSLPinningModePublicKey,
+ AFSSLPinningModeCertificate,
+ }
+
+ `AFSSLPinningModeNone`
+ Do not used pinned certificates to validate servers.
+
+ `AFSSLPinningModePublicKey`
+ Validate host certificates against public keys of pinned certificates.
+
+ `AFSSLPinningModeCertificate`
+ Validate host certificates against pinned certificates.
+*/
diff --git a/SocketDemo/Utils/AFNetworking/AFSecurityPolicy.m b/SocketDemo/Utils/AFNetworking/AFSecurityPolicy.m
new file mode 100755
index 0000000..3704cca
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFSecurityPolicy.m
@@ -0,0 +1,353 @@
+// AFSecurityPolicy.m
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFSecurityPolicy.h"
+
+#import <AssertMacros.h>
+
+#if !TARGET_OS_IOS && !TARGET_OS_WATCH && !TARGET_OS_TV
+static NSData * AFSecKeyGetData(SecKeyRef key) {
+ CFDataRef data = NULL;
+
+ __Require_noErr_Quiet(SecItemExport(key, kSecFormatUnknown, kSecItemPemArmour, NULL, &data), _out);
+
+ return (__bridge_transfer NSData *)data;
+
+_out:
+ if (data) {
+ CFRelease(data);
+ }
+
+ return nil;
+}
+#endif
+
+static BOOL AFSecKeyIsEqualToKey(SecKeyRef key1, SecKeyRef key2) {
+#if TARGET_OS_IOS || TARGET_OS_WATCH || TARGET_OS_TV
+ return [(__bridge id)key1 isEqual:(__bridge id)key2];
+#else
+ return [AFSecKeyGetData(key1) isEqual:AFSecKeyGetData(key2)];
+#endif
+}
+
+static id AFPublicKeyForCertificate(NSData *certificate) {
+ id allowedPublicKey = nil;
+ SecCertificateRef allowedCertificate;
+ SecCertificateRef allowedCertificates[1];
+ CFArrayRef tempCertificates = nil;
+ SecPolicyRef policy = nil;
+ SecTrustRef allowedTrust = nil;
+ SecTrustResultType result;
+
+ allowedCertificate = SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certificate);
+ __Require_Quiet(allowedCertificate != NULL, _out);
+
+ allowedCertificates[0] = allowedCertificate;
+ tempCertificates = CFArrayCreate(NULL, (const void **)allowedCertificates, 1, NULL);
+
+ policy = SecPolicyCreateBasicX509();
+ __Require_noErr_Quiet(SecTrustCreateWithCertificates(tempCertificates, policy, &allowedTrust), _out);
+ __Require_noErr_Quiet(SecTrustEvaluate(allowedTrust, &result), _out);
+
+ allowedPublicKey = (__bridge_transfer id)SecTrustCopyPublicKey(allowedTrust);
+
+_out:
+ if (allowedTrust) {
+ CFRelease(allowedTrust);
+ }
+
+ if (policy) {
+ CFRelease(policy);
+ }
+
+ if (tempCertificates) {
+ CFRelease(tempCertificates);
+ }
+
+ if (allowedCertificate) {
+ CFRelease(allowedCertificate);
+ }
+
+ return allowedPublicKey;
+}
+
+static BOOL AFServerTrustIsValid(SecTrustRef serverTrust) {
+ BOOL isValid = NO;
+ SecTrustResultType result;
+ __Require_noErr_Quiet(SecTrustEvaluate(serverTrust, &result), _out);
+
+ isValid = (result == kSecTrustResultUnspecified || result == kSecTrustResultProceed);
+
+_out:
+ return isValid;
+}
+
+static NSArray * AFCertificateTrustChainForServerTrust(SecTrustRef serverTrust) {
+ CFIndex certificateCount = SecTrustGetCertificateCount(serverTrust);
+ NSMutableArray *trustChain = [NSMutableArray arrayWithCapacity:(NSUInteger)certificateCount];
+
+ for (CFIndex i = 0; i < certificateCount; i++) {
+ SecCertificateRef certificate = SecTrustGetCertificateAtIndex(serverTrust, i);
+ [trustChain addObject:(__bridge_transfer NSData *)SecCertificateCopyData(certificate)];
+ }
+
+ return [NSArray arrayWithArray:trustChain];
+}
+
+static NSArray * AFPublicKeyTrustChainForServerTrust(SecTrustRef serverTrust) {
+ SecPolicyRef policy = SecPolicyCreateBasicX509();
+ CFIndex certificateCount = SecTrustGetCertificateCount(serverTrust);
+ NSMutableArray *trustChain = [NSMutableArray arrayWithCapacity:(NSUInteger)certificateCount];
+ for (CFIndex i = 0; i < certificateCount; i++) {
+ SecCertificateRef certificate = SecTrustGetCertificateAtIndex(serverTrust, i);
+
+ SecCertificateRef someCertificates[] = {certificate};
+ CFArrayRef certificates = CFArrayCreate(NULL, (const void **)someCertificates, 1, NULL);
+
+ SecTrustRef trust;
+ __Require_noErr_Quiet(SecTrustCreateWithCertificates(certificates, policy, &trust), _out);
+
+ SecTrustResultType result;
+ __Require_noErr_Quiet(SecTrustEvaluate(trust, &result), _out);
+
+ [trustChain addObject:(__bridge_transfer id)SecTrustCopyPublicKey(trust)];
+
+ _out:
+ if (trust) {
+ CFRelease(trust);
+ }
+
+ if (certificates) {
+ CFRelease(certificates);
+ }
+
+ continue;
+ }
+ CFRelease(policy);
+
+ return [NSArray arrayWithArray:trustChain];
+}
+
+#pragma mark -
+
+@interface AFSecurityPolicy()
+@property (readwrite, nonatomic, assign) AFSSLPinningMode SSLPinningMode;
+@property (readwrite, nonatomic, strong) NSSet *pinnedPublicKeys;
+@end
+
+@implementation AFSecurityPolicy
+
++ (NSSet *)certificatesInBundle:(NSBundle *)bundle {
+ NSArray *paths = [bundle pathsForResourcesOfType:@"cer" inDirectory:@"."];
+
+ NSMutableSet *certificates = [NSMutableSet setWithCapacity:[paths count]];
+ for (NSString *path in paths) {
+ NSData *certificateData = [NSData dataWithContentsOfFile:path];
+ [certificates addObject:certificateData];
+ }
+
+ return [NSSet setWithSet:certificates];
+}
+
++ (NSSet *)defaultPinnedCertificates {
+ static NSSet *_defaultPinnedCertificates = nil;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ NSBundle *bundle = [NSBundle bundleForClass:[self class]];
+ _defaultPinnedCertificates = [self certificatesInBundle:bundle];
+ });
+
+ return _defaultPinnedCertificates;
+}
+
++ (instancetype)defaultPolicy {
+ AFSecurityPolicy *securityPolicy = [[self alloc] init];
+ securityPolicy.SSLPinningMode = AFSSLPinningModeNone;
+
+ return securityPolicy;
+}
+
++ (instancetype)policyWithPinningMode:(AFSSLPinningMode)pinningMode {
+ return [self policyWithPinningMode:pinningMode withPinnedCertificates:[self defaultPinnedCertificates]];
+}
+
++ (instancetype)policyWithPinningMode:(AFSSLPinningMode)pinningMode withPinnedCertificates:(NSSet *)pinnedCertificates {
+ AFSecurityPolicy *securityPolicy = [[self alloc] init];
+ securityPolicy.SSLPinningMode = pinningMode;
+
+ [securityPolicy setPinnedCertificates:pinnedCertificates];
+
+ return securityPolicy;
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.validatesDomainName = YES;
+
+ return self;
+}
+
+- (void)setPinnedCertificates:(NSSet *)pinnedCertificates {
+ _pinnedCertificates = pinnedCertificates;
+
+ if (self.pinnedCertificates) {
+ NSMutableSet *mutablePinnedPublicKeys = [NSMutableSet setWithCapacity:[self.pinnedCertificates count]];
+ for (NSData *certificate in self.pinnedCertificates) {
+ id publicKey = AFPublicKeyForCertificate(certificate);
+ if (!publicKey) {
+ continue;
+ }
+ [mutablePinnedPublicKeys addObject:publicKey];
+ }
+ self.pinnedPublicKeys = [NSSet setWithSet:mutablePinnedPublicKeys];
+ } else {
+ self.pinnedPublicKeys = nil;
+ }
+}
+
+#pragma mark -
+
+- (BOOL)evaluateServerTrust:(SecTrustRef)serverTrust
+ forDomain:(NSString *)domain
+{
+ if (domain && self.allowInvalidCertificates && self.validatesDomainName && (self.SSLPinningMode == AFSSLPinningModeNone || [self.pinnedCertificates count] == 0)) {
+ // https://developer.apple.com/library/mac/documentation/NetworkingInternet/Conceptual/NetworkingTopics/Articles/OverridingSSLChainValidationCorrectly.html
+ // According to the docs, you should only trust your provided certs for evaluation.
+ // Pinned certificates are added to the trust. Without pinned certificates,
+ // there is nothing to evaluate against.
+ //
+ // From Apple Docs:
+ // "Do not implicitly trust self-signed certificates as anchors (kSecTrustOptionImplicitAnchors).
+ // Instead, add your own (self-signed) CA certificate to the list of trusted anchors."
+ NSLog(@"In order to validate a domain name for self signed certificates, you MUST use pinning.");
+ return NO;
+ }
+
+ NSMutableArray *policies = [NSMutableArray array];
+ if (self.validatesDomainName) {
+ [policies addObject:(__bridge_transfer id)SecPolicyCreateSSL(true, (__bridge CFStringRef)domain)];
+ } else {
+ [policies addObject:(__bridge_transfer id)SecPolicyCreateBasicX509()];
+ }
+
+ SecTrustSetPolicies(serverTrust, (__bridge CFArrayRef)policies);
+
+ if (self.SSLPinningMode == AFSSLPinningModeNone) {
+ return self.allowInvalidCertificates || AFServerTrustIsValid(serverTrust);
+ } else if (!AFServerTrustIsValid(serverTrust) && !self.allowInvalidCertificates) {
+ return NO;
+ }
+
+ switch (self.SSLPinningMode) {
+ case AFSSLPinningModeNone:
+ default:
+ return NO;
+ case AFSSLPinningModeCertificate: {
+ NSMutableArray *pinnedCertificates = [NSMutableArray array];
+ for (NSData *certificateData in self.pinnedCertificates) {
+ [pinnedCertificates addObject:(__bridge_transfer id)SecCertificateCreateWithData(NULL, (__bridge CFDataRef)certificateData)];
+ }
+ SecTrustSetAnchorCertificates(serverTrust, (__bridge CFArrayRef)pinnedCertificates);
+
+ if (!AFServerTrustIsValid(serverTrust)) {
+ return NO;
+ }
+
+ // obtain the chain after being validated, which *should* contain the pinned certificate in the last position (if it's the Root CA)
+ NSArray *serverCertificates = AFCertificateTrustChainForServerTrust(serverTrust);
+
+ for (NSData *trustChainCertificate in [serverCertificates reverseObjectEnumerator]) {
+ if ([self.pinnedCertificates containsObject:trustChainCertificate]) {
+ return YES;
+ }
+ }
+
+ return NO;
+ }
+ case AFSSLPinningModePublicKey: {
+ NSUInteger trustedPublicKeyCount = 0;
+ NSArray *publicKeys = AFPublicKeyTrustChainForServerTrust(serverTrust);
+
+ for (id trustChainPublicKey in publicKeys) {
+ for (id pinnedPublicKey in self.pinnedPublicKeys) {
+ if (AFSecKeyIsEqualToKey((__bridge SecKeyRef)trustChainPublicKey, (__bridge SecKeyRef)pinnedPublicKey)) {
+ trustedPublicKeyCount += 1;
+ }
+ }
+ }
+ return trustedPublicKeyCount > 0;
+ }
+ }
+
+ return NO;
+}
+
+#pragma mark - NSKeyValueObserving
+
++ (NSSet *)keyPathsForValuesAffectingPinnedPublicKeys {
+ return [NSSet setWithObject:@"pinnedCertificates"];
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+ return YES;
+}
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+
+ self = [self init];
+ if (!self) {
+ return nil;
+ }
+
+ self.SSLPinningMode = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(SSLPinningMode))] unsignedIntegerValue];
+ self.allowInvalidCertificates = [decoder decodeBoolForKey:NSStringFromSelector(@selector(allowInvalidCertificates))];
+ self.validatesDomainName = [decoder decodeBoolForKey:NSStringFromSelector(@selector(validatesDomainName))];
+ self.pinnedCertificates = [decoder decodeObjectOfClass:[NSArray class] forKey:NSStringFromSelector(@selector(pinnedCertificates))];
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [coder encodeObject:[NSNumber numberWithUnsignedInteger:self.SSLPinningMode] forKey:NSStringFromSelector(@selector(SSLPinningMode))];
+ [coder encodeBool:self.allowInvalidCertificates forKey:NSStringFromSelector(@selector(allowInvalidCertificates))];
+ [coder encodeBool:self.validatesDomainName forKey:NSStringFromSelector(@selector(validatesDomainName))];
+ [coder encodeObject:self.pinnedCertificates forKey:NSStringFromSelector(@selector(pinnedCertificates))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFSecurityPolicy *securityPolicy = [[[self class] allocWithZone:zone] init];
+ securityPolicy.SSLPinningMode = self.SSLPinningMode;
+ securityPolicy.allowInvalidCertificates = self.allowInvalidCertificates;
+ securityPolicy.validatesDomainName = self.validatesDomainName;
+ securityPolicy.pinnedCertificates = [self.pinnedCertificates copyWithZone:zone];
+
+ return securityPolicy;
+}
+
+@end
diff --git a/SocketDemo/Utils/AFNetworking/AFURLRequestSerialization.h b/SocketDemo/Utils/AFNetworking/AFURLRequestSerialization.h
new file mode 100755
index 0000000..134b7dd
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFURLRequestSerialization.h
@@ -0,0 +1,454 @@
+// AFURLRequestSerialization.h
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+#import <UIKit/UIKit.h>
+#elif TARGET_OS_WATCH
+#import <WatchKit/WatchKit.h>
+#endif
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ The `AFURLRequestSerialization` protocol is adopted by an object that encodes parameters for a specified HTTP requests. Request serializers may encode parameters as query strings, HTTP bodies, setting the appropriate HTTP header fields as necessary.
+
+ For example, a JSON request serializer may set the HTTP body of the request to a JSON representation, and set the `Content-Type` HTTP header field value to `application/json`.
+ */
+@protocol AFURLRequestSerialization <NSObject, NSSecureCoding, NSCopying>
+
+/**
+ Returns a request with the specified parameters encoded into a copy of the original request.
+
+ @param request The original request.
+ @param parameters The parameters to be encoded.
+ @param error The error that occurred while attempting to encode the request parameters.
+
+ @return A serialized request.
+ */
+- (nullable NSURLRequest *)requestBySerializingRequest:(NSURLRequest *)request
+ withParameters:(nullable id)parameters
+ error:(NSError * _Nullable __autoreleasing *)error NS_SWIFT_NOTHROW;
+
+@end
+
+#pragma mark -
+
+/**
+
+ */
+typedef NS_ENUM(NSUInteger, AFHTTPRequestQueryStringSerializationStyle) {
+ AFHTTPRequestQueryStringDefaultStyle = 0,
+};
+
+@protocol AFMultipartFormData;
+
+/**
+ `AFHTTPRequestSerializer` conforms to the `AFURLRequestSerialization` & `AFURLResponseSerialization` protocols, offering a concrete base implementation of query string / URL form-encoded parameter serialization and default request headers, as well as response status code and content type validation.
+
+ Any request or response serializer dealing with HTTP is encouraged to subclass `AFHTTPRequestSerializer` in order to ensure consistent default behavior.
+ */
+@interface AFHTTPRequestSerializer : NSObject <AFURLRequestSerialization>
+
+/**
+ The string encoding used to serialize parameters. `NSUTF8StringEncoding` by default.
+ */
+@property (nonatomic, assign) NSStringEncoding stringEncoding;
+
+/**
+ Whether created requests can use the device���s cellular radio (if present). `YES` by default.
+
+ @see NSMutableURLRequest -setAllowsCellularAccess:
+ */
+@property (nonatomic, assign) BOOL allowsCellularAccess;
+
+/**
+ The cache policy of created requests. `NSURLRequestUseProtocolCachePolicy` by default.
+
+ @see NSMutableURLRequest -setCachePolicy:
+ */
+@property (nonatomic, assign) NSURLRequestCachePolicy cachePolicy;
+
+/**
+ Whether created requests should use the default cookie handling. `YES` by default.
+
+ @see NSMutableURLRequest -setHTTPShouldHandleCookies:
+ */
+@property (nonatomic, assign) BOOL HTTPShouldHandleCookies;
+
+/**
+ Whether created requests can continue transmitting data before receiving a response from an earlier transmission. `NO` by default
+
+ @see NSMutableURLRequest -setHTTPShouldUsePipelining:
+ */
+@property (nonatomic, assign) BOOL HTTPShouldUsePipelining;
+
+/**
+ The network service type for created requests. `NSURLNetworkServiceTypeDefault` by default.
+
+ @see NSMutableURLRequest -setNetworkServiceType:
+ */
+@property (nonatomic, assign) NSURLRequestNetworkServiceType networkServiceType;
+
+/**
+ The timeout interval, in seconds, for created requests. The default timeout interval is 60 seconds.
+
+ @see NSMutableURLRequest -setTimeoutInterval:
+ */
+@property (nonatomic, assign) NSTimeInterval timeoutInterval;
+
+///---------------------------------------
+/// @name Configuring HTTP Request Headers
+///---------------------------------------
+
+/**
+ Default HTTP header field values to be applied to serialized requests. By default, these include the following:
+
+ - `Accept-Language` with the contents of `NSLocale +preferredLanguages`
+ - `User-Agent` with the contents of various bundle identifiers and OS designations
+
+ @discussion To add or remove default request headers, use `setValue:forHTTPHeaderField:`.
+ */
+@property (readonly, nonatomic, strong) NSDictionary <NSString *, NSString *> *HTTPRequestHeaders;
+
+/**
+ Creates and returns a serializer with default configuration.
+ */
++ (instancetype)serializer;
+
+/**
+ Sets the value for the HTTP headers set in request objects made by the HTTP client. If `nil`, removes the existing value for that header.
+
+ @param field The HTTP header to set a default value for
+ @param value The value set as default for the specified header, or `nil`
+ */
+- (void)setValue:(nullable NSString *)value
+forHTTPHeaderField:(NSString *)field;
+
+/**
+ Returns the value for the HTTP headers set in the request serializer.
+
+ @param field The HTTP header to retrieve the default value for
+
+ @return The value set as default for the specified header, or `nil`
+ */
+- (nullable NSString *)valueForHTTPHeaderField:(NSString *)field;
+
+/**
+ Sets the "Authorization" HTTP header set in request objects made by the HTTP client to a basic authentication value with Base64-encoded username and password. This overwrites any existing value for this header.
+
+ @param username The HTTP basic auth username
+ @param password The HTTP basic auth password
+ */
+- (void)setAuthorizationHeaderFieldWithUsername:(NSString *)username
+ password:(NSString *)password;
+
+/**
+ Clears any existing value for the "Authorization" HTTP header.
+ */
+- (void)clearAuthorizationHeader;
+
+///-------------------------------------------------------
+/// @name Configuring Query String Parameter Serialization
+///-------------------------------------------------------
+
+/**
+ HTTP methods for which serialized requests will encode parameters as a query string. `GET`, `HEAD`, and `DELETE` by default.
+ */
+@property (nonatomic, strong) NSSet <NSString *> *HTTPMethodsEncodingParametersInURI;
+
+/**
+ Set the method of query string serialization according to one of the pre-defined styles.
+
+ @param style The serialization style.
+
+ @see AFHTTPRequestQueryStringSerializationStyle
+ */
+- (void)setQueryStringSerializationWithStyle:(AFHTTPRequestQueryStringSerializationStyle)style;
+
+/**
+ Set the a custom method of query string serialization according to the specified block.
+
+ @param block A block that defines a process of encoding parameters into a query string. This block returns the query string and takes three arguments: the request, the parameters to encode, and the error that occurred when attempting to encode parameters for the given request.
+ */
+- (void)setQueryStringSerializationWithBlock:(nullable NSString * (^)(NSURLRequest *request, id parameters, NSError * __autoreleasing *error))block;
+
+///-------------------------------
+/// @name Creating Request Objects
+///-------------------------------
+
+/**
+ Creates an `NSMutableURLRequest` object with the specified HTTP method and URL string.
+
+ If the HTTP method is `GET`, `HEAD`, or `DELETE`, the parameters will be used to construct a url-encoded query string that is appended to the request's URL. Otherwise, the parameters will be encoded according to the value of the `parameterEncoding` property, and set as the request body.
+
+ @param method The HTTP method for the request, such as `GET`, `POST`, `PUT`, or `DELETE`. This parameter must not be `nil`.
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be either set as a query string for `GET` requests, or the request HTTP body.
+ @param error The error that occurred while constructing the request.
+
+ @return An `NSMutableURLRequest` object.
+ */
+- (NSMutableURLRequest *)requestWithMethod:(NSString *)method
+ URLString:(NSString *)URLString
+ parameters:(nullable id)parameters
+ error:(NSError * _Nullable __autoreleasing *)error;
+
+/**
+ Creates an `NSMutableURLRequest` object with the specified HTTP method and URLString, and constructs a `multipart/form-data` HTTP body, using the specified parameters and multipart form data block. See http://www.w3.org/TR/html4/interact/forms.html#h-17.13.4.2
+
+ Multipart form requests are automatically streamed, reading files directly from disk along with in-memory data in a single HTTP body. The resulting `NSMutableURLRequest` object has an `HTTPBodyStream` property, so refrain from setting `HTTPBodyStream` or `HTTPBody` on this request object, as it will clear out the multipart form body stream.
+
+ @param method The HTTP method for the request. This parameter must not be `GET` or `HEAD`, or `nil`.
+ @param URLString The URL string used to create the request URL.
+ @param parameters The parameters to be encoded and set in the request HTTP body.
+ @param block A block that takes a single argument and appends data to the HTTP body. The block argument is an object adopting the `AFMultipartFormData` protocol.
+ @param error The error that occurred while constructing the request.
+
+ @return An `NSMutableURLRequest` object
+ */
+- (NSMutableURLRequest *)multipartFormRequestWithMethod:(NSString *)method
+ URLString:(NSString *)URLString
+ parameters:(nullable NSDictionary <NSString *, id> *)parameters
+ constructingBodyWithBlock:(nullable void (^)(id <AFMultipartFormData> formData))block
+ error:(NSError * _Nullable __autoreleasing *)error;
+
+/**
+ Creates an `NSMutableURLRequest` by removing the `HTTPBodyStream` from a request, and asynchronously writing its contents into the specified file, invoking the completion handler when finished.
+
+ @param request The multipart form request. The `HTTPBodyStream` property of `request` must not be `nil`.
+ @param fileURL The file URL to write multipart form contents to.
+ @param handler A handler block to execute.
+
+ @discussion There is a bug in `NSURLSessionTask` that causes requests to not send a `Content-Length` header when streaming contents from an HTTP body, which is notably problematic when interacting with the Amazon S3 webservice. As a workaround, this method takes a request constructed with `multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:error:`, or any other request with an `HTTPBodyStream`, writes the contents to the specified file and returns a copy of the original request with the `HTTPBodyStream` property set to `nil`. From here, the file can either be passed to `AFURLSessionManager -uploadTaskWithRequest:fromFile:progress:completionHandler:`, or have its contents read into an `NSData` that's assigned to the `HTTPBody` property of the request.
+
+ @see https://github.com/AFNetworking/AFNetworking/issues/1398
+ */
+- (NSMutableURLRequest *)requestWithMultipartFormRequest:(NSURLRequest *)request
+ writingStreamContentsToFile:(NSURL *)fileURL
+ completionHandler:(nullable void (^)(NSError * _Nullable error))handler;
+
+@end
+
+#pragma mark -
+
+/**
+ The `AFMultipartFormData` protocol defines the methods supported by the parameter in the block argument of `AFHTTPRequestSerializer -multipartFormRequestWithMethod:URLString:parameters:constructingBodyWithBlock:`.
+ */
+@protocol AFMultipartFormData
+
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{generated filename}; name=#{name}"` and `Content-Type: #{generated mimeType}`, followed by the encoded file data and the multipart form boundary.
+
+ The filename and MIME type for this data in the form will be automatically generated, using the last path component of the `fileURL` and system associated MIME type for the `fileURL` extension, respectively.
+
+ @param fileURL The URL corresponding to the file whose content will be appended to the form. This parameter must not be `nil`.
+ @param name The name to be associated with the specified data. This parameter must not be `nil`.
+ @param error If an error occurs, upon return contains an `NSError` object that describes the problem.
+
+ @return `YES` if the file data was successfully appended, otherwise `NO`.
+ */
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+ name:(NSString *)name
+ error:(NSError * _Nullable __autoreleasing *)error;
+
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{filename}; name=#{name}"` and `Content-Type: #{mimeType}`, followed by the encoded file data and the multipart form boundary.
+
+ @param fileURL The URL corresponding to the file whose content will be appended to the form. This parameter must not be `nil`.
+ @param name The name to be associated with the specified data. This parameter must not be `nil`.
+ @param fileName The file name to be used in the `Content-Disposition` header. This parameter must not be `nil`.
+ @param mimeType The declared MIME type of the file data. This parameter must not be `nil`.
+ @param error If an error occurs, upon return contains an `NSError` object that describes the problem.
+
+ @return `YES` if the file data was successfully appended otherwise `NO`.
+ */
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+ name:(NSString *)name
+ fileName:(NSString *)fileName
+ mimeType:(NSString *)mimeType
+ error:(NSError * _Nullable __autoreleasing *)error;
+
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{filename}; name=#{name}"` and `Content-Type: #{mimeType}`, followed by the data from the input stream and the multipart form boundary.
+
+ @param inputStream The input stream to be appended to the form data
+ @param name The name to be associated with the specified input stream. This parameter must not be `nil`.
+ @param fileName The filename to be associated with the specified input stream. This parameter must not be `nil`.
+ @param length The length of the specified input stream in bytes.
+ @param mimeType The MIME type of the specified data. (For example, the MIME type for a JPEG image is image/jpeg.) For a list of valid MIME types, see http://www.iana.org/assignments/media-types/. This parameter must not be `nil`.
+ */
+- (void)appendPartWithInputStream:(nullable NSInputStream *)inputStream
+ name:(NSString *)name
+ fileName:(NSString *)fileName
+ length:(int64_t)length
+ mimeType:(NSString *)mimeType;
+
+/**
+ Appends the HTTP header `Content-Disposition: file; filename=#{filename}; name=#{name}"` and `Content-Type: #{mimeType}`, followed by the encoded file data and the multipart form boundary.
+
+ @param data The data to be encoded and appended to the form data.
+ @param name The name to be associated with the specified data. This parameter must not be `nil`.
+ @param fileName The filename to be associated with the specified data. This parameter must not be `nil`.
+ @param mimeType The MIME type of the specified data. (For example, the MIME type for a JPEG image is image/jpeg.) For a list of valid MIME types, see http://www.iana.org/assignments/media-types/. This parameter must not be `nil`.
+ */
+- (void)appendPartWithFileData:(NSData *)data
+ name:(NSString *)name
+ fileName:(NSString *)fileName
+ mimeType:(NSString *)mimeType;
+
+/**
+ Appends the HTTP headers `Content-Disposition: form-data; name=#{name}"`, followed by the encoded data and the multipart form boundary.
+
+ @param data The data to be encoded and appended to the form data.
+ @param name The name to be associated with the specified data. This parameter must not be `nil`.
+ */
+
+- (void)appendPartWithFormData:(NSData *)data
+ name:(NSString *)name;
+
+
+/**
+ Appends HTTP headers, followed by the encoded data and the multipart form boundary.
+
+ @param headers The HTTP headers to be appended to the form data.
+ @param body The data to be encoded and appended to the form data. This parameter must not be `nil`.
+ */
+- (void)appendPartWithHeaders:(nullable NSDictionary <NSString *, NSString *> *)headers
+ body:(NSData *)body;
+
+/**
+ Throttles request bandwidth by limiting the packet size and adding a delay for each chunk read from the upload stream.
+
+ When uploading over a 3G or EDGE connection, requests may fail with "request body stream exhausted". Setting a maximum packet size and delay according to the recommended values (`kAFUploadStream3GSuggestedPacketSize` and `kAFUploadStream3GSuggestedDelay`) lowers the risk of the input stream exceeding its allocated bandwidth. Unfortunately, there is no definite way to distinguish between a 3G, EDGE, or LTE connection over `NSURLConnection`. As such, it is not recommended that you throttle bandwidth based solely on network reachability. Instead, you should consider checking for the "request body stream exhausted" in a failure block, and then retrying the request with throttled bandwidth.
+
+ @param numberOfBytes Maximum packet size, in number of bytes. The default packet size for an input stream is 16kb.
+ @param delay Duration of delay each time a packet is read. By default, no delay is set.
+ */
+- (void)throttleBandwidthWithPacketSize:(NSUInteger)numberOfBytes
+ delay:(NSTimeInterval)delay;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFJSONRequestSerializer` is a subclass of `AFHTTPRequestSerializer` that encodes parameters as JSON using `NSJSONSerialization`, setting the `Content-Type` of the encoded request to `application/json`.
+ */
+@interface AFJSONRequestSerializer : AFHTTPRequestSerializer
+
+/**
+ Options for writing the request JSON data from Foundation objects. For possible values, see the `NSJSONSerialization` documentation section "NSJSONWritingOptions". `0` by default.
+ */
+@property (nonatomic, assign) NSJSONWritingOptions writingOptions;
+
+/**
+ Creates and returns a JSON serializer with specified reading and writing options.
+
+ @param writingOptions The specified JSON writing options.
+ */
++ (instancetype)serializerWithWritingOptions:(NSJSONWritingOptions)writingOptions;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFPropertyListRequestSerializer` is a subclass of `AFHTTPRequestSerializer` that encodes parameters as JSON using `NSPropertyListSerializer`, setting the `Content-Type` of the encoded request to `application/x-plist`.
+ */
+@interface AFPropertyListRequestSerializer : AFHTTPRequestSerializer
+
+/**
+ The property list format. Possible values are described in "NSPropertyListFormat".
+ */
+@property (nonatomic, assign) NSPropertyListFormat format;
+
+/**
+ @warning The `writeOptions` property is currently unused.
+ */
+@property (nonatomic, assign) NSPropertyListWriteOptions writeOptions;
+
+/**
+ Creates and returns a property list serializer with a specified format, read options, and write options.
+
+ @param format The property list format.
+ @param writeOptions The property list write options.
+
+ @warning The `writeOptions` property is currently unused.
+ */
++ (instancetype)serializerWithFormat:(NSPropertyListFormat)format
+ writeOptions:(NSPropertyListWriteOptions)writeOptions;
+
+@end
+
+#pragma mark -
+
+///----------------
+/// @name Constants
+///----------------
+
+/**
+ ## Error Domains
+
+ The following error domain is predefined.
+
+ - `NSString * const AFURLRequestSerializationErrorDomain`
+
+ ### Constants
+
+ `AFURLRequestSerializationErrorDomain`
+ AFURLRequestSerializer errors. Error codes for `AFURLRequestSerializationErrorDomain` correspond to codes in `NSURLErrorDomain`.
+ */
+FOUNDATION_EXPORT NSString * const AFURLRequestSerializationErrorDomain;
+
+/**
+ ## User info dictionary keys
+
+ These keys may exist in the user info dictionary, in addition to those defined for NSError.
+
+ - `NSString * const AFNetworkingOperationFailingURLRequestErrorKey`
+
+ ### Constants
+
+ `AFNetworkingOperationFailingURLRequestErrorKey`
+ The corresponding value is an `NSURLRequest` containing the request of the operation associated with an error. This key is only present in the `AFURLRequestSerializationErrorDomain`.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingOperationFailingURLRequestErrorKey;
+
+/**
+ ## Throttling Bandwidth for HTTP Request Input Streams
+
+ @see -throttleBandwidthWithPacketSize:delay:
+
+ ### Constants
+
+ `kAFUploadStream3GSuggestedPacketSize`
+ Maximum packet size, in number of bytes. Equal to 16kb.
+
+ `kAFUploadStream3GSuggestedDelay`
+ Duration of delay each time a packet is read. Equal to 0.2 seconds.
+ */
+FOUNDATION_EXPORT NSUInteger const kAFUploadStream3GSuggestedPacketSize;
+FOUNDATION_EXPORT NSTimeInterval const kAFUploadStream3GSuggestedDelay;
+
+NS_ASSUME_NONNULL_END
diff --git a/SocketDemo/Utils/AFNetworking/AFURLRequestSerialization.m b/SocketDemo/Utils/AFNetworking/AFURLRequestSerialization.m
new file mode 100755
index 0000000..bbab7c4
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFURLRequestSerialization.m
@@ -0,0 +1,1376 @@
+// AFURLRequestSerialization.m
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFURLRequestSerialization.h"
+
+#if TARGET_OS_IOS || TARGET_OS_WATCH || TARGET_OS_TV
+#import <MobileCoreServices/MobileCoreServices.h>
+#else
+#import <CoreServices/CoreServices.h>
+#endif
+
+NSString * const AFURLRequestSerializationErrorDomain = @"com.alamofire.error.serialization.request";
+NSString * const AFNetworkingOperationFailingURLRequestErrorKey = @"com.alamofire.serialization.request.error.response";
+
+typedef NSString * (^AFQueryStringSerializationBlock)(NSURLRequest *request, id parameters, NSError *__autoreleasing *error);
+
+/**
+ Returns a percent-escaped string following RFC 3986 for a query string key or value.
+ RFC 3986 states that the following characters are "reserved" characters.
+ - General Delimiters: ":", "#", "[", "]", "@", "?", "/"
+ - Sub-Delimiters: "!", "$", "&", "'", "(", ")", "*", "+", ",", ";", "="
+
+ In RFC 3986 - Section 3.4, it states that the "?" and "/" characters should not be escaped to allow
+ query strings to include a URL. Therefore, all "reserved" characters with the exception of "?" and "/"
+ should be percent-escaped in the query string.
+ - parameter string: The string to be percent-escaped.
+ - returns: The percent-escaped string.
+ */
+static NSString * AFPercentEscapedStringFromString(NSString *string) {
+ static NSString * const kAFCharactersGeneralDelimitersToEncode = @":#[]@"; // does not include "?" or "/" due to RFC 3986 - Section 3.4
+ static NSString * const kAFCharactersSubDelimitersToEncode = @"!$&'()*+,;=";
+
+ NSMutableCharacterSet * allowedCharacterSet = [[NSCharacterSet URLQueryAllowedCharacterSet] mutableCopy];
+ [allowedCharacterSet removeCharactersInString:[kAFCharactersGeneralDelimitersToEncode stringByAppendingString:kAFCharactersSubDelimitersToEncode]];
+
+ // FIXME: https://github.com/AFNetworking/AFNetworking/pull/3028
+ // return [string stringByAddingPercentEncodingWithAllowedCharacters:allowedCharacterSet];
+
+ static NSUInteger const batchSize = 50;
+
+ NSUInteger index = 0;
+ NSMutableString *escaped = @"".mutableCopy;
+
+ while (index < string.length) {
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wgnu"
+ NSUInteger length = MIN(string.length - index, batchSize);
+#pragma GCC diagnostic pop
+ NSRange range = NSMakeRange(index, length);
+
+ // To avoid breaking up character sequences such as ����������������
+ range = [string rangeOfComposedCharacterSequencesForRange:range];
+
+ NSString *substring = [string substringWithRange:range];
+ NSString *encoded = [substring stringByAddingPercentEncodingWithAllowedCharacters:allowedCharacterSet];
+ [escaped appendString:encoded];
+
+ index += range.length;
+ }
+
+ return escaped;
+}
+
+#pragma mark -
+
+@interface AFQueryStringPair : NSObject
+@property (readwrite, nonatomic, strong) id field;
+@property (readwrite, nonatomic, strong) id value;
+
+- (instancetype)initWithField:(id)field value:(id)value;
+
+- (NSString *)URLEncodedStringValue;
+@end
+
+@implementation AFQueryStringPair
+
+- (instancetype)initWithField:(id)field value:(id)value {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.field = field;
+ self.value = value;
+
+ return self;
+}
+
+- (NSString *)URLEncodedStringValue {
+ if (!self.value || [self.value isEqual:[NSNull null]]) {
+ return AFPercentEscapedStringFromString([self.field description]);
+ } else {
+ return [NSString stringWithFormat:@"%@=%@", AFPercentEscapedStringFromString([self.field description]), AFPercentEscapedStringFromString([self.value description])];
+ }
+}
+
+@end
+
+#pragma mark -
+
+FOUNDATION_EXPORT NSArray * AFQueryStringPairsFromDictionary(NSDictionary *dictionary);
+FOUNDATION_EXPORT NSArray * AFQueryStringPairsFromKeyAndValue(NSString *key, id value);
+
+static NSString * AFQueryStringFromParameters(NSDictionary *parameters) {
+ NSMutableArray *mutablePairs = [NSMutableArray array];
+ for (AFQueryStringPair *pair in AFQueryStringPairsFromDictionary(parameters)) {
+ [mutablePairs addObject:[pair URLEncodedStringValue]];
+ }
+
+ return [mutablePairs componentsJoinedByString:@"&"];
+}
+
+NSArray * AFQueryStringPairsFromDictionary(NSDictionary *dictionary) {
+ return AFQueryStringPairsFromKeyAndValue(nil, dictionary);
+}
+
+NSArray * AFQueryStringPairsFromKeyAndValue(NSString *key, id value) {
+ NSMutableArray *mutableQueryStringComponents = [NSMutableArray array];
+
+ NSSortDescriptor *sortDescriptor = [NSSortDescriptor sortDescriptorWithKey:@"description" ascending:YES selector:@selector(compare:)];
+
+ if ([value isKindOfClass:[NSDictionary class]]) {
+ NSDictionary *dictionary = value;
+ // Sort dictionary keys to ensure consistent ordering in query string, which is important when deserializing potentially ambiguous sequences, such as an array of dictionaries
+ for (id nestedKey in [dictionary.allKeys sortedArrayUsingDescriptors:@[ sortDescriptor ]]) {
+ id nestedValue = dictionary[nestedKey];
+ if (nestedValue) {
+ [mutableQueryStringComponents addObjectsFromArray:AFQueryStringPairsFromKeyAndValue((key ? [NSString stringWithFormat:@"%@[%@]", key, nestedKey] : nestedKey), nestedValue)];
+ }
+ }
+ } else if ([value isKindOfClass:[NSArray class]]) {
+ NSArray *array = value;
+ for (id nestedValue in array) {
+ [mutableQueryStringComponents addObjectsFromArray:AFQueryStringPairsFromKeyAndValue([NSString stringWithFormat:@"%@[]", key], nestedValue)];
+ }
+ } else if ([value isKindOfClass:[NSSet class]]) {
+ NSSet *set = value;
+ for (id obj in [set sortedArrayUsingDescriptors:@[ sortDescriptor ]]) {
+ [mutableQueryStringComponents addObjectsFromArray:AFQueryStringPairsFromKeyAndValue(key, obj)];
+ }
+ } else {
+ [mutableQueryStringComponents addObject:[[AFQueryStringPair alloc] initWithField:key value:value]];
+ }
+
+ return mutableQueryStringComponents;
+}
+
+#pragma mark -
+
+@interface AFStreamingMultipartFormData : NSObject <AFMultipartFormData>
+- (instancetype)initWithURLRequest:(NSMutableURLRequest *)urlRequest
+ stringEncoding:(NSStringEncoding)encoding;
+
+- (NSMutableURLRequest *)requestByFinalizingMultipartFormData;
+@end
+
+#pragma mark -
+
+static NSArray * AFHTTPRequestSerializerObservedKeyPaths() {
+ static NSArray *_AFHTTPRequestSerializerObservedKeyPaths = nil;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ _AFHTTPRequestSerializerObservedKeyPaths = @[NSStringFromSelector(@selector(allowsCellularAccess)), NSStringFromSelector(@selector(cachePolicy)), NSStringFromSelector(@selector(HTTPShouldHandleCookies)), NSStringFromSelector(@selector(HTTPShouldUsePipelining)), NSStringFromSelector(@selector(networkServiceType)), NSStringFromSelector(@selector(timeoutInterval))];
+ });
+
+ return _AFHTTPRequestSerializerObservedKeyPaths;
+}
+
+static void *AFHTTPRequestSerializerObserverContext = &AFHTTPRequestSerializerObserverContext;
+
+@interface AFHTTPRequestSerializer ()
+@property (readwrite, nonatomic, strong) NSMutableSet *mutableObservedChangedKeyPaths;
+@property (readwrite, nonatomic, strong) NSMutableDictionary *mutableHTTPRequestHeaders;
+@property (readwrite, nonatomic, assign) AFHTTPRequestQueryStringSerializationStyle queryStringSerializationStyle;
+@property (readwrite, nonatomic, copy) AFQueryStringSerializationBlock queryStringSerialization;
+@end
+
+@implementation AFHTTPRequestSerializer
+
++ (instancetype)serializer {
+ return [[self alloc] init];
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.stringEncoding = NSUTF8StringEncoding;
+
+ self.mutableHTTPRequestHeaders = [NSMutableDictionary dictionary];
+
+ // Accept-Language HTTP Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.4
+ NSMutableArray *acceptLanguagesComponents = [NSMutableArray array];
+ [[NSLocale preferredLanguages] enumerateObjectsUsingBlock:^(id obj, NSUInteger idx, BOOL *stop) {
+ float q = 1.0f - (idx * 0.1f);
+ [acceptLanguagesComponents addObject:[NSString stringWithFormat:@"%@;q=%0.1g", obj, q]];
+ *stop = q <= 0.5f;
+ }];
+ [self setValue:[acceptLanguagesComponents componentsJoinedByString:@", "] forHTTPHeaderField:@"Accept-Language"];
+
+ NSString *userAgent = nil;
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+#if TARGET_OS_IOS
+ // User-Agent Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43
+ userAgent = [NSString stringWithFormat:@"%@/%@ (%@; iOS %@; Scale/%0.2f)", [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleExecutableKey] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleIdentifierKey], [[NSBundle mainBundle] infoDictionary][@"CFBundleShortVersionString"] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleVersionKey], [[UIDevice currentDevice] model], [[UIDevice currentDevice] systemVersion], [[UIScreen mainScreen] scale]];
+#elif TARGET_OS_WATCH
+ // User-Agent Header; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html#sec14.43
+ userAgent = [NSString stringWithFormat:@"%@/%@ (%@; watchOS %@; Scale/%0.2f)", [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleExecutableKey] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleIdentifierKey], [[NSBundle mainBundle] infoDictionary][@"CFBundleShortVersionString"] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleVersionKey], [[WKInterfaceDevice currentDevice] model], [[WKInterfaceDevice currentDevice] systemVersion], [[WKInterfaceDevice currentDevice] screenScale]];
+#elif defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
+ userAgent = [NSString stringWithFormat:@"%@/%@ (Mac OS X %@)", [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleExecutableKey] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleIdentifierKey], [[NSBundle mainBundle] infoDictionary][@"CFBundleShortVersionString"] ?: [[NSBundle mainBundle] infoDictionary][(__bridge NSString *)kCFBundleVersionKey], [[NSProcessInfo processInfo] operatingSystemVersionString]];
+#endif
+#pragma clang diagnostic pop
+ if (userAgent) {
+ if (![userAgent canBeConvertedToEncoding:NSASCIIStringEncoding]) {
+ NSMutableString *mutableUserAgent = [userAgent mutableCopy];
+ if (CFStringTransform((__bridge CFMutableStringRef)(mutableUserAgent), NULL, (__bridge CFStringRef)@"Any-Latin; Latin-ASCII; [:^ASCII:] Remove", false)) {
+ userAgent = mutableUserAgent;
+ }
+ }
+ [self setValue:userAgent forHTTPHeaderField:@"User-Agent"];
+ }
+
+ // HTTP Method Definitions; see http://www.w3.org/Protocols/rfc2616/rfc2616-sec9.html
+ self.HTTPMethodsEncodingParametersInURI = [NSSet setWithObjects:@"GET", @"HEAD", @"DELETE", nil];
+
+ self.mutableObservedChangedKeyPaths = [NSMutableSet set];
+ for (NSString *keyPath in AFHTTPRequestSerializerObservedKeyPaths()) {
+ if ([self respondsToSelector:NSSelectorFromString(keyPath)]) {
+ [self addObserver:self forKeyPath:keyPath options:NSKeyValueObservingOptionNew context:AFHTTPRequestSerializerObserverContext];
+ }
+ }
+
+ return self;
+}
+
+- (void)dealloc {
+ for (NSString *keyPath in AFHTTPRequestSerializerObservedKeyPaths()) {
+ if ([self respondsToSelector:NSSelectorFromString(keyPath)]) {
+ [self removeObserver:self forKeyPath:keyPath context:AFHTTPRequestSerializerObserverContext];
+ }
+ }
+}
+
+#pragma mark -
+
+// Workarounds for crashing behavior using Key-Value Observing with XCTest
+// See https://github.com/AFNetworking/AFNetworking/issues/2523
+
+- (void)setAllowsCellularAccess:(BOOL)allowsCellularAccess {
+ [self willChangeValueForKey:NSStringFromSelector(@selector(allowsCellularAccess))];
+ _allowsCellularAccess = allowsCellularAccess;
+ [self didChangeValueForKey:NSStringFromSelector(@selector(allowsCellularAccess))];
+}
+
+- (void)setCachePolicy:(NSURLRequestCachePolicy)cachePolicy {
+ [self willChangeValueForKey:NSStringFromSelector(@selector(cachePolicy))];
+ _cachePolicy = cachePolicy;
+ [self didChangeValueForKey:NSStringFromSelector(@selector(cachePolicy))];
+}
+
+- (void)setHTTPShouldHandleCookies:(BOOL)HTTPShouldHandleCookies {
+ [self willChangeValueForKey:NSStringFromSelector(@selector(HTTPShouldHandleCookies))];
+ _HTTPShouldHandleCookies = HTTPShouldHandleCookies;
+ [self didChangeValueForKey:NSStringFromSelector(@selector(HTTPShouldHandleCookies))];
+}
+
+- (void)setHTTPShouldUsePipelining:(BOOL)HTTPShouldUsePipelining {
+ [self willChangeValueForKey:NSStringFromSelector(@selector(HTTPShouldUsePipelining))];
+ _HTTPShouldUsePipelining = HTTPShouldUsePipelining;
+ [self didChangeValueForKey:NSStringFromSelector(@selector(HTTPShouldUsePipelining))];
+}
+
+- (void)setNetworkServiceType:(NSURLRequestNetworkServiceType)networkServiceType {
+ [self willChangeValueForKey:NSStringFromSelector(@selector(networkServiceType))];
+ _networkServiceType = networkServiceType;
+ [self didChangeValueForKey:NSStringFromSelector(@selector(networkServiceType))];
+}
+
+- (void)setTimeoutInterval:(NSTimeInterval)timeoutInterval {
+ [self willChangeValueForKey:NSStringFromSelector(@selector(timeoutInterval))];
+ _timeoutInterval = timeoutInterval;
+ [self didChangeValueForKey:NSStringFromSelector(@selector(timeoutInterval))];
+}
+
+#pragma mark -
+
+- (NSDictionary *)HTTPRequestHeaders {
+ return [NSDictionary dictionaryWithDictionary:self.mutableHTTPRequestHeaders];
+}
+
+- (void)setValue:(NSString *)value
+forHTTPHeaderField:(NSString *)field
+{
+ [self.mutableHTTPRequestHeaders setValue:value forKey:field];
+}
+
+- (NSString *)valueForHTTPHeaderField:(NSString *)field {
+ return [self.mutableHTTPRequestHeaders valueForKey:field];
+}
+
+- (void)setAuthorizationHeaderFieldWithUsername:(NSString *)username
+ password:(NSString *)password
+{
+ NSData *basicAuthCredentials = [[NSString stringWithFormat:@"%@:%@", username, password] dataUsingEncoding:NSUTF8StringEncoding];
+ NSString *base64AuthCredentials = [basicAuthCredentials base64EncodedStringWithOptions:(NSDataBase64EncodingOptions)0];
+ [self setValue:[NSString stringWithFormat:@"Basic %@", base64AuthCredentials] forHTTPHeaderField:@"Authorization"];
+}
+
+- (void)clearAuthorizationHeader {
+ [self.mutableHTTPRequestHeaders removeObjectForKey:@"Authorization"];
+}
+
+#pragma mark -
+
+- (void)setQueryStringSerializationWithStyle:(AFHTTPRequestQueryStringSerializationStyle)style {
+ self.queryStringSerializationStyle = style;
+ self.queryStringSerialization = nil;
+}
+
+- (void)setQueryStringSerializationWithBlock:(NSString *(^)(NSURLRequest *, id, NSError *__autoreleasing *))block {
+ self.queryStringSerialization = block;
+}
+
+#pragma mark -
+
+- (NSMutableURLRequest *)requestWithMethod:(NSString *)method
+ URLString:(NSString *)URLString
+ parameters:(id)parameters
+ error:(NSError *__autoreleasing *)error
+{
+ NSParameterAssert(method);
+ NSParameterAssert(URLString);
+
+ NSURL *url = [NSURL URLWithString:URLString];
+
+ NSParameterAssert(url);
+
+ NSMutableURLRequest *mutableRequest = [[NSMutableURLRequest alloc] initWithURL:url];
+ mutableRequest.HTTPMethod = method;
+
+ for (NSString *keyPath in AFHTTPRequestSerializerObservedKeyPaths()) {
+ if ([self.mutableObservedChangedKeyPaths containsObject:keyPath]) {
+ [mutableRequest setValue:[self valueForKeyPath:keyPath] forKey:keyPath];
+ }
+ }
+
+ mutableRequest = [[self requestBySerializingRequest:mutableRequest withParameters:parameters error:error] mutableCopy];
+
+ return mutableRequest;
+}
+
+- (NSMutableURLRequest *)multipartFormRequestWithMethod:(NSString *)method
+ URLString:(NSString *)URLString
+ parameters:(NSDictionary *)parameters
+ constructingBodyWithBlock:(void (^)(id <AFMultipartFormData> formData))block
+ error:(NSError *__autoreleasing *)error
+{
+ NSParameterAssert(method);
+ NSParameterAssert(![method isEqualToString:@"GET"] && ![method isEqualToString:@"HEAD"]);
+
+ NSMutableURLRequest *mutableRequest = [self requestWithMethod:method URLString:URLString parameters:nil error:error];
+
+ __block AFStreamingMultipartFormData *formData = [[AFStreamingMultipartFormData alloc] initWithURLRequest:mutableRequest stringEncoding:NSUTF8StringEncoding];
+
+ if (parameters) {
+ for (AFQueryStringPair *pair in AFQueryStringPairsFromDictionary(parameters)) {
+ NSData *data = nil;
+ if ([pair.value isKindOfClass:[NSData class]]) {
+ data = pair.value;
+ } else if ([pair.value isEqual:[NSNull null]]) {
+ data = [NSData data];
+ } else {
+ data = [[pair.value description] dataUsingEncoding:self.stringEncoding];
+ }
+
+ if (data) {
+ [formData appendPartWithFormData:data name:[pair.field description]];
+ }
+ }
+ }
+
+ if (block) {
+ block(formData);
+ }
+
+ return [formData requestByFinalizingMultipartFormData];
+}
+
+- (NSMutableURLRequest *)requestWithMultipartFormRequest:(NSURLRequest *)request
+ writingStreamContentsToFile:(NSURL *)fileURL
+ completionHandler:(void (^)(NSError *error))handler
+{
+ NSParameterAssert(request.HTTPBodyStream);
+ NSParameterAssert([fileURL isFileURL]);
+
+ NSInputStream *inputStream = request.HTTPBodyStream;
+ NSOutputStream *outputStream = [[NSOutputStream alloc] initWithURL:fileURL append:NO];
+ __block NSError *error = nil;
+
+ dispatch_async(dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0), ^{
+ [inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
+ [outputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSDefaultRunLoopMode];
+
+ [inputStream open];
+ [outputStream open];
+
+ while ([inputStream hasBytesAvailable] && [outputStream hasSpaceAvailable]) {
+ uint8_t buffer[1024];
+
+ NSInteger bytesRead = [inputStream read:buffer maxLength:1024];
+ if (inputStream.streamError || bytesRead < 0) {
+ error = inputStream.streamError;
+ break;
+ }
+
+ NSInteger bytesWritten = [outputStream write:buffer maxLength:(NSUInteger)bytesRead];
+ if (outputStream.streamError || bytesWritten < 0) {
+ error = outputStream.streamError;
+ break;
+ }
+
+ if (bytesRead == 0 && bytesWritten == 0) {
+ break;
+ }
+ }
+
+ [outputStream close];
+ [inputStream close];
+
+ if (handler) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ handler(error);
+ });
+ }
+ });
+
+ NSMutableURLRequest *mutableRequest = [request mutableCopy];
+ mutableRequest.HTTPBodyStream = nil;
+
+ return mutableRequest;
+}
+
+#pragma mark - AFURLRequestSerialization
+
+- (NSURLRequest *)requestBySerializingRequest:(NSURLRequest *)request
+ withParameters:(id)parameters
+ error:(NSError *__autoreleasing *)error
+{
+ NSParameterAssert(request);
+
+ NSMutableURLRequest *mutableRequest = [request mutableCopy];
+
+ [self.HTTPRequestHeaders enumerateKeysAndObjectsUsingBlock:^(id field, id value, BOOL * __unused stop) {
+ if (![request valueForHTTPHeaderField:field]) {
+ [mutableRequest setValue:value forHTTPHeaderField:field];
+ }
+ }];
+
+ NSString *query = nil;
+ if (parameters) {
+ if (self.queryStringSerialization) {
+ NSError *serializationError;
+ query = self.queryStringSerialization(request, parameters, &serializationError);
+
+ if (serializationError) {
+ if (error) {
+ *error = serializationError;
+ }
+
+ return nil;
+ }
+ } else {
+ switch (self.queryStringSerializationStyle) {
+ case AFHTTPRequestQueryStringDefaultStyle:
+ query = AFQueryStringFromParameters(parameters);
+ break;
+ }
+ }
+ }
+
+ if ([self.HTTPMethodsEncodingParametersInURI containsObject:[[request HTTPMethod] uppercaseString]]) {
+ if (query) {
+ mutableRequest.URL = [NSURL URLWithString:[[mutableRequest.URL absoluteString] stringByAppendingFormat:mutableRequest.URL.query ? @"&%@" : @"?%@", query]];
+ }
+ } else {
+ // #2864: an empty string is a valid x-www-form-urlencoded payload
+ if (!query) {
+ query = @"";
+ }
+ if (![mutableRequest valueForHTTPHeaderField:@"Content-Type"]) {
+ [mutableRequest setValue:@"application/x-www-form-urlencoded" forHTTPHeaderField:@"Content-Type"];
+ }
+ [mutableRequest setHTTPBody:[query dataUsingEncoding:self.stringEncoding]];
+ }
+
+ return mutableRequest;
+}
+
+#pragma mark - NSKeyValueObserving
+
++ (BOOL)automaticallyNotifiesObserversForKey:(NSString *)key {
+ if ([AFHTTPRequestSerializerObservedKeyPaths() containsObject:key]) {
+ return NO;
+ }
+
+ return [super automaticallyNotifiesObserversForKey:key];
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath
+ ofObject:(__unused id)object
+ change:(NSDictionary *)change
+ context:(void *)context
+{
+ if (context == AFHTTPRequestSerializerObserverContext) {
+ if ([change[NSKeyValueChangeNewKey] isEqual:[NSNull null]]) {
+ [self.mutableObservedChangedKeyPaths removeObject:keyPath];
+ } else {
+ [self.mutableObservedChangedKeyPaths addObject:keyPath];
+ }
+ }
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+ return YES;
+}
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ self = [self init];
+ if (!self) {
+ return nil;
+ }
+
+ self.mutableHTTPRequestHeaders = [[decoder decodeObjectOfClass:[NSDictionary class] forKey:NSStringFromSelector(@selector(mutableHTTPRequestHeaders))] mutableCopy];
+ self.queryStringSerializationStyle = (AFHTTPRequestQueryStringSerializationStyle)[[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(queryStringSerializationStyle))] unsignedIntegerValue];
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [coder encodeObject:self.mutableHTTPRequestHeaders forKey:NSStringFromSelector(@selector(mutableHTTPRequestHeaders))];
+ [coder encodeInteger:self.queryStringSerializationStyle forKey:NSStringFromSelector(@selector(queryStringSerializationStyle))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFHTTPRequestSerializer *serializer = [[[self class] allocWithZone:zone] init];
+ serializer.mutableHTTPRequestHeaders = [self.mutableHTTPRequestHeaders mutableCopyWithZone:zone];
+ serializer.queryStringSerializationStyle = self.queryStringSerializationStyle;
+ serializer.queryStringSerialization = self.queryStringSerialization;
+
+ return serializer;
+}
+
+@end
+
+#pragma mark -
+
+static NSString * AFCreateMultipartFormBoundary() {
+ return [NSString stringWithFormat:@"Boundary+%08X%08X", arc4random(), arc4random()];
+}
+
+static NSString * const kAFMultipartFormCRLF = @"\r\n";
+
+static inline NSString * AFMultipartFormInitialBoundary(NSString *boundary) {
+ return [NSString stringWithFormat:@"--%@%@", boundary, kAFMultipartFormCRLF];
+}
+
+static inline NSString * AFMultipartFormEncapsulationBoundary(NSString *boundary) {
+ return [NSString stringWithFormat:@"%@--%@%@", kAFMultipartFormCRLF, boundary, kAFMultipartFormCRLF];
+}
+
+static inline NSString * AFMultipartFormFinalBoundary(NSString *boundary) {
+ return [NSString stringWithFormat:@"%@--%@--%@", kAFMultipartFormCRLF, boundary, kAFMultipartFormCRLF];
+}
+
+static inline NSString * AFContentTypeForPathExtension(NSString *extension) {
+ NSString *UTI = (__bridge_transfer NSString *)UTTypeCreatePreferredIdentifierForTag(kUTTagClassFilenameExtension, (__bridge CFStringRef)extension, NULL);
+ NSString *contentType = (__bridge_transfer NSString *)UTTypeCopyPreferredTagWithClass((__bridge CFStringRef)UTI, kUTTagClassMIMEType);
+ if (!contentType) {
+ return @"application/octet-stream";
+ } else {
+ return contentType;
+ }
+}
+
+NSUInteger const kAFUploadStream3GSuggestedPacketSize = 1024 * 16;
+NSTimeInterval const kAFUploadStream3GSuggestedDelay = 0.2;
+
+@interface AFHTTPBodyPart : NSObject
+@property (nonatomic, assign) NSStringEncoding stringEncoding;
+@property (nonatomic, strong) NSDictionary *headers;
+@property (nonatomic, copy) NSString *boundary;
+@property (nonatomic, strong) id body;
+@property (nonatomic, assign) unsigned long long bodyContentLength;
+@property (nonatomic, strong) NSInputStream *inputStream;
+
+@property (nonatomic, assign) BOOL hasInitialBoundary;
+@property (nonatomic, assign) BOOL hasFinalBoundary;
+
+@property (readonly, nonatomic, assign, getter = hasBytesAvailable) BOOL bytesAvailable;
+@property (readonly, nonatomic, assign) unsigned long long contentLength;
+
+- (NSInteger)read:(uint8_t *)buffer
+ maxLength:(NSUInteger)length;
+@end
+
+@interface AFMultipartBodyStream : NSInputStream <NSStreamDelegate>
+@property (nonatomic, assign) NSUInteger numberOfBytesInPacket;
+@property (nonatomic, assign) NSTimeInterval delay;
+@property (nonatomic, strong) NSInputStream *inputStream;
+@property (readonly, nonatomic, assign) unsigned long long contentLength;
+@property (readonly, nonatomic, assign, getter = isEmpty) BOOL empty;
+
+- (instancetype)initWithStringEncoding:(NSStringEncoding)encoding;
+- (void)setInitialAndFinalBoundaries;
+- (void)appendHTTPBodyPart:(AFHTTPBodyPart *)bodyPart;
+@end
+
+#pragma mark -
+
+@interface AFStreamingMultipartFormData ()
+@property (readwrite, nonatomic, copy) NSMutableURLRequest *request;
+@property (readwrite, nonatomic, assign) NSStringEncoding stringEncoding;
+@property (readwrite, nonatomic, copy) NSString *boundary;
+@property (readwrite, nonatomic, strong) AFMultipartBodyStream *bodyStream;
+@end
+
+@implementation AFStreamingMultipartFormData
+
+- (instancetype)initWithURLRequest:(NSMutableURLRequest *)urlRequest
+ stringEncoding:(NSStringEncoding)encoding
+{
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.request = urlRequest;
+ self.stringEncoding = encoding;
+ self.boundary = AFCreateMultipartFormBoundary();
+ self.bodyStream = [[AFMultipartBodyStream alloc] initWithStringEncoding:encoding];
+
+ return self;
+}
+
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+ name:(NSString *)name
+ error:(NSError * __autoreleasing *)error
+{
+ NSParameterAssert(fileURL);
+ NSParameterAssert(name);
+
+ NSString *fileName = [fileURL lastPathComponent];
+ NSString *mimeType = AFContentTypeForPathExtension([fileURL pathExtension]);
+
+ return [self appendPartWithFileURL:fileURL name:name fileName:fileName mimeType:mimeType error:error];
+}
+
+- (BOOL)appendPartWithFileURL:(NSURL *)fileURL
+ name:(NSString *)name
+ fileName:(NSString *)fileName
+ mimeType:(NSString *)mimeType
+ error:(NSError * __autoreleasing *)error
+{
+ NSParameterAssert(fileURL);
+ NSParameterAssert(name);
+ NSParameterAssert(fileName);
+ NSParameterAssert(mimeType);
+
+ if (![fileURL isFileURL]) {
+ NSDictionary *userInfo = @{NSLocalizedFailureReasonErrorKey: NSLocalizedStringFromTable(@"Expected URL to be a file URL", @"AFNetworking", nil)};
+ if (error) {
+ *error = [[NSError alloc] initWithDomain:AFURLRequestSerializationErrorDomain code:NSURLErrorBadURL userInfo:userInfo];
+ }
+
+ return NO;
+ } else if ([fileURL checkResourceIsReachableAndReturnError:error] == NO) {
+ NSDictionary *userInfo = @{NSLocalizedFailureReasonErrorKey: NSLocalizedStringFromTable(@"File URL not reachable.", @"AFNetworking", nil)};
+ if (error) {
+ *error = [[NSError alloc] initWithDomain:AFURLRequestSerializationErrorDomain code:NSURLErrorBadURL userInfo:userInfo];
+ }
+
+ return NO;
+ }
+
+ NSDictionary *fileAttributes = [[NSFileManager defaultManager] attributesOfItemAtPath:[fileURL path] error:error];
+ if (!fileAttributes) {
+ return NO;
+ }
+
+ NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
+ [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"; filename=\"%@\"", name, fileName] forKey:@"Content-Disposition"];
+ [mutableHeaders setValue:mimeType forKey:@"Content-Type"];
+
+ AFHTTPBodyPart *bodyPart = [[AFHTTPBodyPart alloc] init];
+ bodyPart.stringEncoding = self.stringEncoding;
+ bodyPart.headers = mutableHeaders;
+ bodyPart.boundary = self.boundary;
+ bodyPart.body = fileURL;
+ bodyPart.bodyContentLength = [fileAttributes[NSFileSize] unsignedLongLongValue];
+ [self.bodyStream appendHTTPBodyPart:bodyPart];
+
+ return YES;
+}
+
+- (void)appendPartWithInputStream:(NSInputStream *)inputStream
+ name:(NSString *)name
+ fileName:(NSString *)fileName
+ length:(int64_t)length
+ mimeType:(NSString *)mimeType
+{
+ NSParameterAssert(name);
+ NSParameterAssert(fileName);
+ NSParameterAssert(mimeType);
+
+ NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
+ [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"; filename=\"%@\"", name, fileName] forKey:@"Content-Disposition"];
+ [mutableHeaders setValue:mimeType forKey:@"Content-Type"];
+
+ AFHTTPBodyPart *bodyPart = [[AFHTTPBodyPart alloc] init];
+ bodyPart.stringEncoding = self.stringEncoding;
+ bodyPart.headers = mutableHeaders;
+ bodyPart.boundary = self.boundary;
+ bodyPart.body = inputStream;
+
+ bodyPart.bodyContentLength = (unsigned long long)length;
+
+ [self.bodyStream appendHTTPBodyPart:bodyPart];
+}
+
+- (void)appendPartWithFileData:(NSData *)data
+ name:(NSString *)name
+ fileName:(NSString *)fileName
+ mimeType:(NSString *)mimeType
+{
+ NSParameterAssert(name);
+ NSParameterAssert(fileName);
+ NSParameterAssert(mimeType);
+
+ NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
+ [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"; filename=\"%@\"", name, fileName] forKey:@"Content-Disposition"];
+ [mutableHeaders setValue:mimeType forKey:@"Content-Type"];
+
+ [self appendPartWithHeaders:mutableHeaders body:data];
+}
+
+- (void)appendPartWithFormData:(NSData *)data
+ name:(NSString *)name
+{
+ NSParameterAssert(name);
+
+ NSMutableDictionary *mutableHeaders = [NSMutableDictionary dictionary];
+ [mutableHeaders setValue:[NSString stringWithFormat:@"form-data; name=\"%@\"", name] forKey:@"Content-Disposition"];
+
+ [self appendPartWithHeaders:mutableHeaders body:data];
+}
+
+- (void)appendPartWithHeaders:(NSDictionary *)headers
+ body:(NSData *)body
+{
+ NSParameterAssert(body);
+
+ AFHTTPBodyPart *bodyPart = [[AFHTTPBodyPart alloc] init];
+ bodyPart.stringEncoding = self.stringEncoding;
+ bodyPart.headers = headers;
+ bodyPart.boundary = self.boundary;
+ bodyPart.bodyContentLength = [body length];
+ bodyPart.body = body;
+
+ [self.bodyStream appendHTTPBodyPart:bodyPart];
+}
+
+- (void)throttleBandwidthWithPacketSize:(NSUInteger)numberOfBytes
+ delay:(NSTimeInterval)delay
+{
+ self.bodyStream.numberOfBytesInPacket = numberOfBytes;
+ self.bodyStream.delay = delay;
+}
+
+- (NSMutableURLRequest *)requestByFinalizingMultipartFormData {
+ if ([self.bodyStream isEmpty]) {
+ return self.request;
+ }
+
+ // Reset the initial and final boundaries to ensure correct Content-Length
+ [self.bodyStream setInitialAndFinalBoundaries];
+ [self.request setHTTPBodyStream:self.bodyStream];
+
+ [self.request setValue:[NSString stringWithFormat:@"multipart/form-data; boundary=%@", self.boundary] forHTTPHeaderField:@"Content-Type"];
+ [self.request setValue:[NSString stringWithFormat:@"%llu", [self.bodyStream contentLength]] forHTTPHeaderField:@"Content-Length"];
+
+ return self.request;
+}
+
+@end
+
+#pragma mark -
+
+@interface NSStream ()
+@property (readwrite) NSStreamStatus streamStatus;
+@property (readwrite, copy) NSError *streamError;
+@end
+
+@interface AFMultipartBodyStream () <NSCopying>
+@property (readwrite, nonatomic, assign) NSStringEncoding stringEncoding;
+@property (readwrite, nonatomic, strong) NSMutableArray *HTTPBodyParts;
+@property (readwrite, nonatomic, strong) NSEnumerator *HTTPBodyPartEnumerator;
+@property (readwrite, nonatomic, strong) AFHTTPBodyPart *currentHTTPBodyPart;
+@property (readwrite, nonatomic, strong) NSOutputStream *outputStream;
+@property (readwrite, nonatomic, strong) NSMutableData *buffer;
+@end
+
+@implementation AFMultipartBodyStream
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wimplicit-atomic-properties"
+#if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 80000) || (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 1100)
+@synthesize delegate;
+#endif
+@synthesize streamStatus;
+@synthesize streamError;
+#pragma clang diagnostic pop
+
+- (instancetype)initWithStringEncoding:(NSStringEncoding)encoding {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.stringEncoding = encoding;
+ self.HTTPBodyParts = [NSMutableArray array];
+ self.numberOfBytesInPacket = NSIntegerMax;
+
+ return self;
+}
+
+- (void)setInitialAndFinalBoundaries {
+ if ([self.HTTPBodyParts count] > 0) {
+ for (AFHTTPBodyPart *bodyPart in self.HTTPBodyParts) {
+ bodyPart.hasInitialBoundary = NO;
+ bodyPart.hasFinalBoundary = NO;
+ }
+
+ [[self.HTTPBodyParts firstObject] setHasInitialBoundary:YES];
+ [[self.HTTPBodyParts lastObject] setHasFinalBoundary:YES];
+ }
+}
+
+- (void)appendHTTPBodyPart:(AFHTTPBodyPart *)bodyPart {
+ [self.HTTPBodyParts addObject:bodyPart];
+}
+
+- (BOOL)isEmpty {
+ return [self.HTTPBodyParts count] == 0;
+}
+
+#pragma mark - NSInputStream
+
+- (NSInteger)read:(uint8_t *)buffer
+ maxLength:(NSUInteger)length
+{
+ if ([self streamStatus] == NSStreamStatusClosed) {
+ return 0;
+ }
+
+ NSInteger totalNumberOfBytesRead = 0;
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+ while ((NSUInteger)totalNumberOfBytesRead < MIN(length, self.numberOfBytesInPacket)) {
+ if (!self.currentHTTPBodyPart || ![self.currentHTTPBodyPart hasBytesAvailable]) {
+ if (!(self.currentHTTPBodyPart = [self.HTTPBodyPartEnumerator nextObject])) {
+ break;
+ }
+ } else {
+ NSUInteger maxLength = MIN(length, self.numberOfBytesInPacket) - (NSUInteger)totalNumberOfBytesRead;
+ NSInteger numberOfBytesRead = [self.currentHTTPBodyPart read:&buffer[totalNumberOfBytesRead] maxLength:maxLength];
+ if (numberOfBytesRead == -1) {
+ self.streamError = self.currentHTTPBodyPart.inputStream.streamError;
+ break;
+ } else {
+ totalNumberOfBytesRead += numberOfBytesRead;
+
+ if (self.delay > 0.0f) {
+ [NSThread sleepForTimeInterval:self.delay];
+ }
+ }
+ }
+ }
+#pragma clang diagnostic pop
+
+ return totalNumberOfBytesRead;
+}
+
+- (BOOL)getBuffer:(__unused uint8_t **)buffer
+ length:(__unused NSUInteger *)len
+{
+ return NO;
+}
+
+- (BOOL)hasBytesAvailable {
+ return [self streamStatus] == NSStreamStatusOpen;
+}
+
+#pragma mark - NSStream
+
+- (void)open {
+ if (self.streamStatus == NSStreamStatusOpen) {
+ return;
+ }
+
+ self.streamStatus = NSStreamStatusOpen;
+
+ [self setInitialAndFinalBoundaries];
+ self.HTTPBodyPartEnumerator = [self.HTTPBodyParts objectEnumerator];
+}
+
+- (void)close {
+ self.streamStatus = NSStreamStatusClosed;
+}
+
+- (id)propertyForKey:(__unused NSString *)key {
+ return nil;
+}
+
+- (BOOL)setProperty:(__unused id)property
+ forKey:(__unused NSString *)key
+{
+ return NO;
+}
+
+- (void)scheduleInRunLoop:(__unused NSRunLoop *)aRunLoop
+ forMode:(__unused NSString *)mode
+{}
+
+- (void)removeFromRunLoop:(__unused NSRunLoop *)aRunLoop
+ forMode:(__unused NSString *)mode
+{}
+
+- (unsigned long long)contentLength {
+ unsigned long long length = 0;
+ for (AFHTTPBodyPart *bodyPart in self.HTTPBodyParts) {
+ length += [bodyPart contentLength];
+ }
+
+ return length;
+}
+
+#pragma mark - Undocumented CFReadStream Bridged Methods
+
+- (void)_scheduleInCFRunLoop:(__unused CFRunLoopRef)aRunLoop
+ forMode:(__unused CFStringRef)aMode
+{}
+
+- (void)_unscheduleFromCFRunLoop:(__unused CFRunLoopRef)aRunLoop
+ forMode:(__unused CFStringRef)aMode
+{}
+
+- (BOOL)_setCFClientFlags:(__unused CFOptionFlags)inFlags
+ callback:(__unused CFReadStreamClientCallBack)inCallback
+ context:(__unused CFStreamClientContext *)inContext {
+ return NO;
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFMultipartBodyStream *bodyStreamCopy = [[[self class] allocWithZone:zone] initWithStringEncoding:self.stringEncoding];
+
+ for (AFHTTPBodyPart *bodyPart in self.HTTPBodyParts) {
+ [bodyStreamCopy appendHTTPBodyPart:[bodyPart copy]];
+ }
+
+ [bodyStreamCopy setInitialAndFinalBoundaries];
+
+ return bodyStreamCopy;
+}
+
+@end
+
+#pragma mark -
+
+typedef enum {
+ AFEncapsulationBoundaryPhase = 1,
+ AFHeaderPhase = 2,
+ AFBodyPhase = 3,
+ AFFinalBoundaryPhase = 4,
+} AFHTTPBodyPartReadPhase;
+
+@interface AFHTTPBodyPart () <NSCopying> {
+ AFHTTPBodyPartReadPhase _phase;
+ NSInputStream *_inputStream;
+ unsigned long long _phaseReadOffset;
+}
+
+- (BOOL)transitionToNextPhase;
+- (NSInteger)readData:(NSData *)data
+ intoBuffer:(uint8_t *)buffer
+ maxLength:(NSUInteger)length;
+@end
+
+@implementation AFHTTPBodyPart
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ [self transitionToNextPhase];
+
+ return self;
+}
+
+- (void)dealloc {
+ if (_inputStream) {
+ [_inputStream close];
+ _inputStream = nil;
+ }
+}
+
+- (NSInputStream *)inputStream {
+ if (!_inputStream) {
+ if ([self.body isKindOfClass:[NSData class]]) {
+ _inputStream = [NSInputStream inputStreamWithData:self.body];
+ } else if ([self.body isKindOfClass:[NSURL class]]) {
+ _inputStream = [NSInputStream inputStreamWithURL:self.body];
+ } else if ([self.body isKindOfClass:[NSInputStream class]]) {
+ _inputStream = self.body;
+ } else {
+ _inputStream = [NSInputStream inputStreamWithData:[NSData data]];
+ }
+ }
+
+ return _inputStream;
+}
+
+- (NSString *)stringForHeaders {
+ NSMutableString *headerString = [NSMutableString string];
+ for (NSString *field in [self.headers allKeys]) {
+ [headerString appendString:[NSString stringWithFormat:@"%@: %@%@", field, [self.headers valueForKey:field], kAFMultipartFormCRLF]];
+ }
+ [headerString appendString:kAFMultipartFormCRLF];
+
+ return [NSString stringWithString:headerString];
+}
+
+- (unsigned long long)contentLength {
+ unsigned long long length = 0;
+
+ NSData *encapsulationBoundaryData = [([self hasInitialBoundary] ? AFMultipartFormInitialBoundary(self.boundary) : AFMultipartFormEncapsulationBoundary(self.boundary)) dataUsingEncoding:self.stringEncoding];
+ length += [encapsulationBoundaryData length];
+
+ NSData *headersData = [[self stringForHeaders] dataUsingEncoding:self.stringEncoding];
+ length += [headersData length];
+
+ length += _bodyContentLength;
+
+ NSData *closingBoundaryData = ([self hasFinalBoundary] ? [AFMultipartFormFinalBoundary(self.boundary) dataUsingEncoding:self.stringEncoding] : [NSData data]);
+ length += [closingBoundaryData length];
+
+ return length;
+}
+
+- (BOOL)hasBytesAvailable {
+ // Allows `read:maxLength:` to be called again if `AFMultipartFormFinalBoundary` doesn't fit into the available buffer
+ if (_phase == AFFinalBoundaryPhase) {
+ return YES;
+ }
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcovered-switch-default"
+ switch (self.inputStream.streamStatus) {
+ case NSStreamStatusNotOpen:
+ case NSStreamStatusOpening:
+ case NSStreamStatusOpen:
+ case NSStreamStatusReading:
+ case NSStreamStatusWriting:
+ return YES;
+ case NSStreamStatusAtEnd:
+ case NSStreamStatusClosed:
+ case NSStreamStatusError:
+ default:
+ return NO;
+ }
+#pragma clang diagnostic pop
+}
+
+- (NSInteger)read:(uint8_t *)buffer
+ maxLength:(NSUInteger)length
+{
+ NSInteger totalNumberOfBytesRead = 0;
+
+ if (_phase == AFEncapsulationBoundaryPhase) {
+ NSData *encapsulationBoundaryData = [([self hasInitialBoundary] ? AFMultipartFormInitialBoundary(self.boundary) : AFMultipartFormEncapsulationBoundary(self.boundary)) dataUsingEncoding:self.stringEncoding];
+ totalNumberOfBytesRead += [self readData:encapsulationBoundaryData intoBuffer:&buffer[totalNumberOfBytesRead] maxLength:(length - (NSUInteger)totalNumberOfBytesRead)];
+ }
+
+ if (_phase == AFHeaderPhase) {
+ NSData *headersData = [[self stringForHeaders] dataUsingEncoding:self.stringEncoding];
+ totalNumberOfBytesRead += [self readData:headersData intoBuffer:&buffer[totalNumberOfBytesRead] maxLength:(length - (NSUInteger)totalNumberOfBytesRead)];
+ }
+
+ if (_phase == AFBodyPhase) {
+ NSInteger numberOfBytesRead = 0;
+
+ numberOfBytesRead = [self.inputStream read:&buffer[totalNumberOfBytesRead] maxLength:(length - (NSUInteger)totalNumberOfBytesRead)];
+ if (numberOfBytesRead == -1) {
+ return -1;
+ } else {
+ totalNumberOfBytesRead += numberOfBytesRead;
+
+ if ([self.inputStream streamStatus] >= NSStreamStatusAtEnd) {
+ [self transitionToNextPhase];
+ }
+ }
+ }
+
+ if (_phase == AFFinalBoundaryPhase) {
+ NSData *closingBoundaryData = ([self hasFinalBoundary] ? [AFMultipartFormFinalBoundary(self.boundary) dataUsingEncoding:self.stringEncoding] : [NSData data]);
+ totalNumberOfBytesRead += [self readData:closingBoundaryData intoBuffer:&buffer[totalNumberOfBytesRead] maxLength:(length - (NSUInteger)totalNumberOfBytesRead)];
+ }
+
+ return totalNumberOfBytesRead;
+}
+
+- (NSInteger)readData:(NSData *)data
+ intoBuffer:(uint8_t *)buffer
+ maxLength:(NSUInteger)length
+{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+ NSRange range = NSMakeRange((NSUInteger)_phaseReadOffset, MIN([data length] - ((NSUInteger)_phaseReadOffset), length));
+ [data getBytes:buffer range:range];
+#pragma clang diagnostic pop
+
+ _phaseReadOffset += range.length;
+
+ if (((NSUInteger)_phaseReadOffset) >= [data length]) {
+ [self transitionToNextPhase];
+ }
+
+ return (NSInteger)range.length;
+}
+
+- (BOOL)transitionToNextPhase {
+ if (![[NSThread currentThread] isMainThread]) {
+ dispatch_sync(dispatch_get_main_queue(), ^{
+ [self transitionToNextPhase];
+ });
+ return YES;
+ }
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wcovered-switch-default"
+ switch (_phase) {
+ case AFEncapsulationBoundaryPhase:
+ _phase = AFHeaderPhase;
+ break;
+ case AFHeaderPhase:
+ [self.inputStream scheduleInRunLoop:[NSRunLoop currentRunLoop] forMode:NSRunLoopCommonModes];
+ [self.inputStream open];
+ _phase = AFBodyPhase;
+ break;
+ case AFBodyPhase:
+ [self.inputStream close];
+ _phase = AFFinalBoundaryPhase;
+ break;
+ case AFFinalBoundaryPhase:
+ default:
+ _phase = AFEncapsulationBoundaryPhase;
+ break;
+ }
+ _phaseReadOffset = 0;
+#pragma clang diagnostic pop
+
+ return YES;
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFHTTPBodyPart *bodyPart = [[[self class] allocWithZone:zone] init];
+
+ bodyPart.stringEncoding = self.stringEncoding;
+ bodyPart.headers = self.headers;
+ bodyPart.bodyContentLength = self.bodyContentLength;
+ bodyPart.body = self.body;
+ bodyPart.boundary = self.boundary;
+
+ return bodyPart;
+}
+
+@end
+
+#pragma mark -
+
+@implementation AFJSONRequestSerializer
+
++ (instancetype)serializer {
+ return [self serializerWithWritingOptions:(NSJSONWritingOptions)0];
+}
+
++ (instancetype)serializerWithWritingOptions:(NSJSONWritingOptions)writingOptions
+{
+ AFJSONRequestSerializer *serializer = [[self alloc] init];
+ serializer.writingOptions = writingOptions;
+
+ return serializer;
+}
+
+#pragma mark - AFURLRequestSerialization
+
+- (NSURLRequest *)requestBySerializingRequest:(NSURLRequest *)request
+ withParameters:(id)parameters
+ error:(NSError *__autoreleasing *)error
+{
+ NSParameterAssert(request);
+
+ if ([self.HTTPMethodsEncodingParametersInURI containsObject:[[request HTTPMethod] uppercaseString]]) {
+ return [super requestBySerializingRequest:request withParameters:parameters error:error];
+ }
+
+ NSMutableURLRequest *mutableRequest = [request mutableCopy];
+
+ [self.HTTPRequestHeaders enumerateKeysAndObjectsUsingBlock:^(id field, id value, BOOL * __unused stop) {
+ if (![request valueForHTTPHeaderField:field]) {
+ [mutableRequest setValue:value forHTTPHeaderField:field];
+ }
+ }];
+
+ if (parameters) {
+ if (![mutableRequest valueForHTTPHeaderField:@"Content-Type"]) {
+ [mutableRequest setValue:@"application/json" forHTTPHeaderField:@"Content-Type"];
+ }
+
+ [mutableRequest setHTTPBody:[NSJSONSerialization dataWithJSONObject:parameters options:self.writingOptions error:error]];
+ }
+
+ return mutableRequest;
+}
+
+#pragma mark - NSSecureCoding
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ self = [super initWithCoder:decoder];
+ if (!self) {
+ return nil;
+ }
+
+ self.writingOptions = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(writingOptions))] unsignedIntegerValue];
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [super encodeWithCoder:coder];
+
+ [coder encodeInteger:self.writingOptions forKey:NSStringFromSelector(@selector(writingOptions))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFJSONRequestSerializer *serializer = [super copyWithZone:zone];
+ serializer.writingOptions = self.writingOptions;
+
+ return serializer;
+}
+
+@end
+
+#pragma mark -
+
+@implementation AFPropertyListRequestSerializer
+
++ (instancetype)serializer {
+ return [self serializerWithFormat:NSPropertyListXMLFormat_v1_0 writeOptions:0];
+}
+
++ (instancetype)serializerWithFormat:(NSPropertyListFormat)format
+ writeOptions:(NSPropertyListWriteOptions)writeOptions
+{
+ AFPropertyListRequestSerializer *serializer = [[self alloc] init];
+ serializer.format = format;
+ serializer.writeOptions = writeOptions;
+
+ return serializer;
+}
+
+#pragma mark - AFURLRequestSerializer
+
+- (NSURLRequest *)requestBySerializingRequest:(NSURLRequest *)request
+ withParameters:(id)parameters
+ error:(NSError *__autoreleasing *)error
+{
+ NSParameterAssert(request);
+
+ if ([self.HTTPMethodsEncodingParametersInURI containsObject:[[request HTTPMethod] uppercaseString]]) {
+ return [super requestBySerializingRequest:request withParameters:parameters error:error];
+ }
+
+ NSMutableURLRequest *mutableRequest = [request mutableCopy];
+
+ [self.HTTPRequestHeaders enumerateKeysAndObjectsUsingBlock:^(id field, id value, BOOL * __unused stop) {
+ if (![request valueForHTTPHeaderField:field]) {
+ [mutableRequest setValue:value forHTTPHeaderField:field];
+ }
+ }];
+
+ if (parameters) {
+ if (![mutableRequest valueForHTTPHeaderField:@"Content-Type"]) {
+ [mutableRequest setValue:@"application/x-plist" forHTTPHeaderField:@"Content-Type"];
+ }
+
+ [mutableRequest setHTTPBody:[NSPropertyListSerialization dataWithPropertyList:parameters format:self.format options:self.writeOptions error:error]];
+ }
+
+ return mutableRequest;
+}
+
+#pragma mark - NSSecureCoding
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ self = [super initWithCoder:decoder];
+ if (!self) {
+ return nil;
+ }
+
+ self.format = (NSPropertyListFormat)[[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(format))] unsignedIntegerValue];
+ self.writeOptions = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(writeOptions))] unsignedIntegerValue];
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [super encodeWithCoder:coder];
+
+ [coder encodeInteger:self.format forKey:NSStringFromSelector(@selector(format))];
+ [coder encodeObject:@(self.writeOptions) forKey:NSStringFromSelector(@selector(writeOptions))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFPropertyListRequestSerializer *serializer = [super copyWithZone:zone];
+ serializer.format = self.format;
+ serializer.writeOptions = self.writeOptions;
+
+ return serializer;
+}
+
+@end
diff --git a/SocketDemo/Utils/AFNetworking/AFURLResponseSerialization.h b/SocketDemo/Utils/AFNetworking/AFURLResponseSerialization.h
new file mode 100755
index 0000000..f9e14c6
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFURLResponseSerialization.h
@@ -0,0 +1,311 @@
+// AFURLResponseSerialization.h
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+#import <CoreGraphics/CoreGraphics.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ The `AFURLResponseSerialization` protocol is adopted by an object that decodes data into a more useful object representation, according to details in the server response. Response serializers may additionally perform validation on the incoming response and data.
+
+ For example, a JSON response serializer may check for an acceptable status code (`2XX` range) and content type (`application/json`), decoding a valid JSON response into an object.
+ */
+@protocol AFURLResponseSerialization <NSObject, NSSecureCoding, NSCopying>
+
+/**
+ The response object decoded from the data associated with a specified response.
+
+ @param response The response to be processed.
+ @param data The response data to be decoded.
+ @param error The error that occurred while attempting to decode the response data.
+
+ @return The object decoded from the specified response data.
+ */
+- (nullable id)responseObjectForResponse:(nullable NSURLResponse *)response
+ data:(nullable NSData *)data
+ error:(NSError * _Nullable __autoreleasing *)error NS_SWIFT_NOTHROW;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFHTTPResponseSerializer` conforms to the `AFURLRequestSerialization` & `AFURLResponseSerialization` protocols, offering a concrete base implementation of query string / URL form-encoded parameter serialization and default request headers, as well as response status code and content type validation.
+
+ Any request or response serializer dealing with HTTP is encouraged to subclass `AFHTTPResponseSerializer` in order to ensure consistent default behavior.
+ */
+@interface AFHTTPResponseSerializer : NSObject <AFURLResponseSerialization>
+
+- (instancetype)init;
+
+/**
+ The string encoding used to serialize data received from the server, when no string encoding is specified by the response. `NSUTF8StringEncoding` by default.
+ */
+@property (nonatomic, assign) NSStringEncoding stringEncoding;
+
+/**
+ Creates and returns a serializer with default configuration.
+ */
++ (instancetype)serializer;
+
+///-----------------------------------------
+/// @name Configuring Response Serialization
+///-----------------------------------------
+
+/**
+ The acceptable HTTP status codes for responses. When non-`nil`, responses with status codes not contained by the set will result in an error during validation.
+
+ See http://www.w3.org/Protocols/rfc2616/rfc2616-sec10.html
+ */
+@property (nonatomic, copy, nullable) NSIndexSet *acceptableStatusCodes;
+
+/**
+ The acceptable MIME types for responses. When non-`nil`, responses with a `Content-Type` with MIME types that do not intersect with the set will result in an error during validation.
+ */
+@property (nonatomic, copy, nullable) NSSet <NSString *> *acceptableContentTypes;
+
+/**
+ Validates the specified response and data.
+
+ In its base implementation, this method checks for an acceptable status code and content type. Subclasses may wish to add other domain-specific checks.
+
+ @param response The response to be validated.
+ @param data The data associated with the response.
+ @param error The error that occurred while attempting to validate the response.
+
+ @return `YES` if the response is valid, otherwise `NO`.
+ */
+- (BOOL)validateResponse:(nullable NSHTTPURLResponse *)response
+ data:(nullable NSData *)data
+ error:(NSError * _Nullable __autoreleasing *)error;
+
+@end
+
+#pragma mark -
+
+
+/**
+ `AFJSONResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes JSON responses.
+
+ By default, `AFJSONResponseSerializer` accepts the following MIME types, which includes the official standard, `application/json`, as well as other commonly-used types:
+
+ - `application/json`
+ - `text/json`
+ - `text/javascript`
+ */
+@interface AFJSONResponseSerializer : AFHTTPResponseSerializer
+
+- (instancetype)init;
+
+/**
+ Options for reading the response JSON data and creating the Foundation objects. For possible values, see the `NSJSONSerialization` documentation section "NSJSONReadingOptions". `0` by default.
+ */
+@property (nonatomic, assign) NSJSONReadingOptions readingOptions;
+
+/**
+ Whether to remove keys with `NSNull` values from response JSON. Defaults to `NO`.
+ */
+@property (nonatomic, assign) BOOL removesKeysWithNullValues;
+
+/**
+ Creates and returns a JSON serializer with specified reading and writing options.
+
+ @param readingOptions The specified JSON reading options.
+ */
++ (instancetype)serializerWithReadingOptions:(NSJSONReadingOptions)readingOptions;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFXMLParserResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes XML responses as an `NSXMLParser` objects.
+
+ By default, `AFXMLParserResponseSerializer` accepts the following MIME types, which includes the official standard, `application/xml`, as well as other commonly-used types:
+
+ - `application/xml`
+ - `text/xml`
+ */
+@interface AFXMLParserResponseSerializer : AFHTTPResponseSerializer
+
+@end
+
+#pragma mark -
+
+#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED
+
+/**
+ `AFXMLDocumentResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes XML responses as an `NSXMLDocument` objects.
+
+ By default, `AFXMLDocumentResponseSerializer` accepts the following MIME types, which includes the official standard, `application/xml`, as well as other commonly-used types:
+
+ - `application/xml`
+ - `text/xml`
+ */
+@interface AFXMLDocumentResponseSerializer : AFHTTPResponseSerializer
+
+- (instancetype)init;
+
+/**
+ Input and output options specifically intended for `NSXMLDocument` objects. For possible values, see the `NSJSONSerialization` documentation section "NSJSONReadingOptions". `0` by default.
+ */
+@property (nonatomic, assign) NSUInteger options;
+
+/**
+ Creates and returns an XML document serializer with the specified options.
+
+ @param mask The XML document options.
+ */
++ (instancetype)serializerWithXMLDocumentOptions:(NSUInteger)mask;
+
+@end
+
+#endif
+
+#pragma mark -
+
+/**
+ `AFPropertyListResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes XML responses as an `NSXMLDocument` objects.
+
+ By default, `AFPropertyListResponseSerializer` accepts the following MIME types:
+
+ - `application/x-plist`
+ */
+@interface AFPropertyListResponseSerializer : AFHTTPResponseSerializer
+
+- (instancetype)init;
+
+/**
+ The property list format. Possible values are described in "NSPropertyListFormat".
+ */
+@property (nonatomic, assign) NSPropertyListFormat format;
+
+/**
+ The property list reading options. Possible values are described in "NSPropertyListMutabilityOptions."
+ */
+@property (nonatomic, assign) NSPropertyListReadOptions readOptions;
+
+/**
+ Creates and returns a property list serializer with a specified format, read options, and write options.
+
+ @param format The property list format.
+ @param readOptions The property list reading options.
+ */
++ (instancetype)serializerWithFormat:(NSPropertyListFormat)format
+ readOptions:(NSPropertyListReadOptions)readOptions;
+
+@end
+
+#pragma mark -
+
+/**
+ `AFImageResponseSerializer` is a subclass of `AFHTTPResponseSerializer` that validates and decodes image responses.
+
+ By default, `AFImageResponseSerializer` accepts the following MIME types, which correspond to the image formats supported by UIImage or NSImage:
+
+ - `image/tiff`
+ - `image/jpeg`
+ - `image/gif`
+ - `image/png`
+ - `image/ico`
+ - `image/x-icon`
+ - `image/bmp`
+ - `image/x-bmp`
+ - `image/x-xbitmap`
+ - `image/x-win-bitmap`
+ */
+@interface AFImageResponseSerializer : AFHTTPResponseSerializer
+
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+/**
+ The scale factor used when interpreting the image data to construct `responseImage`. Specifying a scale factor of 1.0 results in an image whose size matches the pixel-based dimensions of the image. Applying a different scale factor changes the size of the image as reported by the size property. This is set to the value of scale of the main screen by default, which automatically scales images for retina displays, for instance.
+ */
+@property (nonatomic, assign) CGFloat imageScale;
+
+/**
+ Whether to automatically inflate response image data for compressed formats (such as PNG or JPEG). Enabling this can significantly improve drawing performance on iOS when used with `setCompletionBlockWithSuccess:failure:`, as it allows a bitmap representation to be constructed in the background rather than on the main thread. `YES` by default.
+ */
+@property (nonatomic, assign) BOOL automaticallyInflatesResponseImage;
+#endif
+
+@end
+
+#pragma mark -
+
+/**
+ `AFCompoundSerializer` is a subclass of `AFHTTPResponseSerializer` that delegates the response serialization to the first `AFHTTPResponseSerializer` object that returns an object for `responseObjectForResponse:data:error:`, falling back on the default behavior of `AFHTTPResponseSerializer`. This is useful for supporting multiple potential types and structures of server responses with a single serializer.
+ */
+@interface AFCompoundResponseSerializer : AFHTTPResponseSerializer
+
+/**
+ The component response serializers.
+ */
+@property (readonly, nonatomic, copy) NSArray <id<AFURLResponseSerialization>> *responseSerializers;
+
+/**
+ Creates and returns a compound serializer comprised of the specified response serializers.
+
+ @warning Each response serializer specified must be a subclass of `AFHTTPResponseSerializer`, and response to `-validateResponse:data:error:`.
+ */
++ (instancetype)compoundSerializerWithResponseSerializers:(NSArray <id<AFURLResponseSerialization>> *)responseSerializers;
+
+@end
+
+///----------------
+/// @name Constants
+///----------------
+
+/**
+ ## Error Domains
+
+ The following error domain is predefined.
+
+ - `NSString * const AFURLResponseSerializationErrorDomain`
+
+ ### Constants
+
+ `AFURLResponseSerializationErrorDomain`
+ AFURLResponseSerializer errors. Error codes for `AFURLResponseSerializationErrorDomain` correspond to codes in `NSURLErrorDomain`.
+ */
+FOUNDATION_EXPORT NSString * const AFURLResponseSerializationErrorDomain;
+
+/**
+ ## User info dictionary keys
+
+ These keys may exist in the user info dictionary, in addition to those defined for NSError.
+
+ - `NSString * const AFNetworkingOperationFailingURLResponseErrorKey`
+ - `NSString * const AFNetworkingOperationFailingURLResponseDataErrorKey`
+
+ ### Constants
+
+ `AFNetworkingOperationFailingURLResponseErrorKey`
+ The corresponding value is an `NSURLResponse` containing the response of the operation associated with an error. This key is only present in the `AFURLResponseSerializationErrorDomain`.
+
+ `AFNetworkingOperationFailingURLResponseDataErrorKey`
+ The corresponding value is an `NSData` containing the original data of the operation associated with an error. This key is only present in the `AFURLResponseSerializationErrorDomain`.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingOperationFailingURLResponseErrorKey;
+
+FOUNDATION_EXPORT NSString * const AFNetworkingOperationFailingURLResponseDataErrorKey;
+
+NS_ASSUME_NONNULL_END
diff --git a/SocketDemo/Utils/AFNetworking/AFURLResponseSerialization.m b/SocketDemo/Utils/AFNetworking/AFURLResponseSerialization.m
new file mode 100755
index 0000000..6720733
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFURLResponseSerialization.m
@@ -0,0 +1,828 @@
+// AFURLResponseSerialization.m
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFURLResponseSerialization.h"
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS
+#import <UIKit/UIKit.h>
+#elif TARGET_OS_WATCH
+#import <WatchKit/WatchKit.h>
+#elif defined(__MAC_OS_X_VERSION_MIN_REQUIRED)
+#import <Cocoa/Cocoa.h>
+#endif
+
+NSString * const AFURLResponseSerializationErrorDomain = @"com.alamofire.error.serialization.response";
+NSString * const AFNetworkingOperationFailingURLResponseErrorKey = @"com.alamofire.serialization.response.error.response";
+NSString * const AFNetworkingOperationFailingURLResponseDataErrorKey = @"com.alamofire.serialization.response.error.data";
+
+static NSError * AFErrorWithUnderlyingError(NSError *error, NSError *underlyingError) {
+ if (!error) {
+ return underlyingError;
+ }
+
+ if (!underlyingError || error.userInfo[NSUnderlyingErrorKey]) {
+ return error;
+ }
+
+ NSMutableDictionary *mutableUserInfo = [error.userInfo mutableCopy];
+ mutableUserInfo[NSUnderlyingErrorKey] = underlyingError;
+
+ return [[NSError alloc] initWithDomain:error.domain code:error.code userInfo:mutableUserInfo];
+}
+
+static BOOL AFErrorOrUnderlyingErrorHasCodeInDomain(NSError *error, NSInteger code, NSString *domain) {
+ if ([error.domain isEqualToString:domain] && error.code == code) {
+ return YES;
+ } else if (error.userInfo[NSUnderlyingErrorKey]) {
+ return AFErrorOrUnderlyingErrorHasCodeInDomain(error.userInfo[NSUnderlyingErrorKey], code, domain);
+ }
+
+ return NO;
+}
+
+static id AFJSONObjectByRemovingKeysWithNullValues(id JSONObject, NSJSONReadingOptions readingOptions) {
+ if ([JSONObject isKindOfClass:[NSArray class]]) {
+ NSMutableArray *mutableArray = [NSMutableArray arrayWithCapacity:[(NSArray *)JSONObject count]];
+ for (id value in (NSArray *)JSONObject) {
+ [mutableArray addObject:AFJSONObjectByRemovingKeysWithNullValues(value, readingOptions)];
+ }
+
+ return (readingOptions & NSJSONReadingMutableContainers) ? mutableArray : [NSArray arrayWithArray:mutableArray];
+ } else if ([JSONObject isKindOfClass:[NSDictionary class]]) {
+ NSMutableDictionary *mutableDictionary = [NSMutableDictionary dictionaryWithDictionary:JSONObject];
+ for (id <NSCopying> key in [(NSDictionary *)JSONObject allKeys]) {
+ id value = (NSDictionary *)JSONObject[key];
+ if (!value || [value isEqual:[NSNull null]]) {
+ [mutableDictionary removeObjectForKey:key];
+ } else if ([value isKindOfClass:[NSArray class]] || [value isKindOfClass:[NSDictionary class]]) {
+ mutableDictionary[key] = AFJSONObjectByRemovingKeysWithNullValues(value, readingOptions);
+ }
+ }
+
+ return (readingOptions & NSJSONReadingMutableContainers) ? mutableDictionary : [NSDictionary dictionaryWithDictionary:mutableDictionary];
+ }
+
+ return JSONObject;
+}
+
+@implementation AFHTTPResponseSerializer
+
++ (instancetype)serializer {
+ return [[self alloc] init];
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.stringEncoding = NSUTF8StringEncoding;
+
+ self.acceptableStatusCodes = [NSIndexSet indexSetWithIndexesInRange:NSMakeRange(200, 100)];
+ self.acceptableContentTypes = nil;
+
+ return self;
+}
+
+#pragma mark -
+
+- (BOOL)validateResponse:(NSHTTPURLResponse *)response
+ data:(NSData *)data
+ error:(NSError * __autoreleasing *)error
+{
+ BOOL responseIsValid = YES;
+ NSError *validationError = nil;
+
+ if (response && [response isKindOfClass:[NSHTTPURLResponse class]]) {
+ if (self.acceptableContentTypes && ![self.acceptableContentTypes containsObject:[response MIMEType]]) {
+ if ([data length] > 0 && [response URL]) {
+ NSMutableDictionary *mutableUserInfo = [@{
+ NSLocalizedDescriptionKey: [NSString stringWithFormat:NSLocalizedStringFromTable(@"Request failed: unacceptable content-type: %@", @"AFNetworking", nil), [response MIMEType]],
+ NSURLErrorFailingURLErrorKey:[response URL],
+ AFNetworkingOperationFailingURLResponseErrorKey: response,
+ } mutableCopy];
+ if (data) {
+ mutableUserInfo[AFNetworkingOperationFailingURLResponseDataErrorKey] = data;
+ }
+
+ validationError = AFErrorWithUnderlyingError([NSError errorWithDomain:AFURLResponseSerializationErrorDomain code:NSURLErrorCannotDecodeContentData userInfo:mutableUserInfo], validationError);
+ }
+
+ responseIsValid = NO;
+ }
+
+ if (self.acceptableStatusCodes && ![self.acceptableStatusCodes containsIndex:(NSUInteger)response.statusCode] && [response URL]) {
+ NSMutableDictionary *mutableUserInfo = [@{
+ NSLocalizedDescriptionKey: [NSString stringWithFormat:NSLocalizedStringFromTable(@"Request failed: %@ (%ld)", @"AFNetworking", nil), [NSHTTPURLResponse localizedStringForStatusCode:response.statusCode], (long)response.statusCode],
+ NSURLErrorFailingURLErrorKey:[response URL],
+ AFNetworkingOperationFailingURLResponseErrorKey: response,
+ } mutableCopy];
+
+ if (data) {
+ mutableUserInfo[AFNetworkingOperationFailingURLResponseDataErrorKey] = data;
+ }
+
+ validationError = AFErrorWithUnderlyingError([NSError errorWithDomain:AFURLResponseSerializationErrorDomain code:NSURLErrorBadServerResponse userInfo:mutableUserInfo], validationError);
+
+ responseIsValid = NO;
+ }
+ }
+
+ if (error && !responseIsValid) {
+ *error = validationError;
+ }
+
+ return responseIsValid;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+ data:(NSData *)data
+ error:(NSError *__autoreleasing *)error
+{
+ [self validateResponse:(NSHTTPURLResponse *)response data:data error:error];
+
+ return data;
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+ return YES;
+}
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ self = [self init];
+ if (!self) {
+ return nil;
+ }
+
+ self.acceptableStatusCodes = [decoder decodeObjectOfClass:[NSIndexSet class] forKey:NSStringFromSelector(@selector(acceptableStatusCodes))];
+ self.acceptableContentTypes = [decoder decodeObjectOfClass:[NSIndexSet class] forKey:NSStringFromSelector(@selector(acceptableContentTypes))];
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [coder encodeObject:self.acceptableStatusCodes forKey:NSStringFromSelector(@selector(acceptableStatusCodes))];
+ [coder encodeObject:self.acceptableContentTypes forKey:NSStringFromSelector(@selector(acceptableContentTypes))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFHTTPResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+ serializer.acceptableStatusCodes = [self.acceptableStatusCodes copyWithZone:zone];
+ serializer.acceptableContentTypes = [self.acceptableContentTypes copyWithZone:zone];
+
+ return serializer;
+}
+
+@end
+
+#pragma mark -
+
+@implementation AFJSONResponseSerializer
+
++ (instancetype)serializer {
+ return [self serializerWithReadingOptions:(NSJSONReadingOptions)0];
+}
+
++ (instancetype)serializerWithReadingOptions:(NSJSONReadingOptions)readingOptions {
+ AFJSONResponseSerializer *serializer = [[self alloc] init];
+ serializer.readingOptions = readingOptions;
+
+ return serializer;
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.acceptableContentTypes = [NSSet setWithObjects:@"application/json", @"text/html",@"text/json", @"text/javascript",@"text/plain", nil];
+
+ return self;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+ data:(NSData *)data
+ error:(NSError *__autoreleasing *)error
+{
+ if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+ if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+ return nil;
+ }
+ }
+
+ // Workaround for behavior of Rails to return a single space for `head :ok` (a workaround for a bug in Safari), which is not interpreted as valid input by NSJSONSerialization.
+ // See https://github.com/rails/rails/issues/1742
+ NSStringEncoding stringEncoding = self.stringEncoding;
+ if (response.textEncodingName) {
+ CFStringEncoding encoding = CFStringConvertIANACharSetNameToEncoding((CFStringRef)response.textEncodingName);
+ if (encoding != kCFStringEncodingInvalidId) {
+ stringEncoding = CFStringConvertEncodingToNSStringEncoding(encoding);
+ }
+ }
+
+ id responseObject = nil;
+ NSError *serializationError = nil;
+ @autoreleasepool {
+ NSString *responseString = [[NSString alloc] initWithData:data encoding:stringEncoding];
+ if (responseString && ![responseString isEqualToString:@" "]) {
+ // Workaround for a bug in NSJSONSerialization when Unicode character escape codes are used instead of the actual character
+ // See http://stackoverflow.com/a/12843465/157142
+ data = [responseString dataUsingEncoding:NSUTF8StringEncoding];
+
+ if (data) {
+ if ([data length] > 0) {
+ responseObject = [NSJSONSerialization JSONObjectWithData:data options:self.readingOptions error:&serializationError];
+ } else {
+ return nil;
+ }
+ } else {
+ NSDictionary *userInfo = @{
+ NSLocalizedDescriptionKey: NSLocalizedStringFromTable(@"Data failed decoding as a UTF-8 string", @"AFNetworking", nil),
+ NSLocalizedFailureReasonErrorKey: [NSString stringWithFormat:NSLocalizedStringFromTable(@"Could not decode string: %@", @"AFNetworking", nil), responseString]
+ };
+
+ serializationError = [NSError errorWithDomain:AFURLResponseSerializationErrorDomain code:NSURLErrorCannotDecodeContentData userInfo:userInfo];
+ }
+ }
+ }
+
+ if (self.removesKeysWithNullValues && responseObject) {
+ responseObject = AFJSONObjectByRemovingKeysWithNullValues(responseObject, self.readingOptions);
+ }
+
+ if (error) {
+ *error = AFErrorWithUnderlyingError(serializationError, *error);
+ }
+
+ return responseObject;
+}
+
+#pragma mark - NSSecureCoding
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ self = [super initWithCoder:decoder];
+ if (!self) {
+ return nil;
+ }
+
+ self.readingOptions = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(readingOptions))] unsignedIntegerValue];
+ self.removesKeysWithNullValues = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(removesKeysWithNullValues))] boolValue];
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [super encodeWithCoder:coder];
+
+ [coder encodeObject:@(self.readingOptions) forKey:NSStringFromSelector(@selector(readingOptions))];
+ [coder encodeObject:@(self.removesKeysWithNullValues) forKey:NSStringFromSelector(@selector(removesKeysWithNullValues))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFJSONResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+ serializer.readingOptions = self.readingOptions;
+ serializer.removesKeysWithNullValues = self.removesKeysWithNullValues;
+
+ return serializer;
+}
+
+@end
+
+#pragma mark -
+
+@implementation AFXMLParserResponseSerializer
+
++ (instancetype)serializer {
+ AFXMLParserResponseSerializer *serializer = [[self alloc] init];
+
+ return serializer;
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.acceptableContentTypes = [[NSSet alloc] initWithObjects:@"application/xml", @"text/xml", nil];
+
+ return self;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSHTTPURLResponse *)response
+ data:(NSData *)data
+ error:(NSError *__autoreleasing *)error
+{
+ if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+ if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+ return nil;
+ }
+ }
+
+ return [[NSXMLParser alloc] initWithData:data];
+}
+
+@end
+
+#pragma mark -
+
+#ifdef __MAC_OS_X_VERSION_MIN_REQUIRED
+
+@implementation AFXMLDocumentResponseSerializer
+
++ (instancetype)serializer {
+ return [self serializerWithXMLDocumentOptions:0];
+}
+
++ (instancetype)serializerWithXMLDocumentOptions:(NSUInteger)mask {
+ AFXMLDocumentResponseSerializer *serializer = [[self alloc] init];
+ serializer.options = mask;
+
+ return serializer;
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.acceptableContentTypes = [[NSSet alloc] initWithObjects:@"application/xml", @"text/xml", nil];
+
+ return self;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+ data:(NSData *)data
+ error:(NSError *__autoreleasing *)error
+{
+ if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+ if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+ return nil;
+ }
+ }
+
+ NSError *serializationError = nil;
+ NSXMLDocument *document = [[NSXMLDocument alloc] initWithData:data options:self.options error:&serializationError];
+
+ if (error) {
+ *error = AFErrorWithUnderlyingError(serializationError, *error);
+ }
+
+ return document;
+}
+
+#pragma mark - NSSecureCoding
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ self = [super initWithCoder:decoder];
+ if (!self) {
+ return nil;
+ }
+
+ self.options = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(options))] unsignedIntegerValue];
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [super encodeWithCoder:coder];
+
+ [coder encodeObject:@(self.options) forKey:NSStringFromSelector(@selector(options))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFXMLDocumentResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+ serializer.options = self.options;
+
+ return serializer;
+}
+
+@end
+
+#endif
+
+#pragma mark -
+
+@implementation AFPropertyListResponseSerializer
+
++ (instancetype)serializer {
+ return [self serializerWithFormat:NSPropertyListXMLFormat_v1_0 readOptions:0];
+}
+
++ (instancetype)serializerWithFormat:(NSPropertyListFormat)format
+ readOptions:(NSPropertyListReadOptions)readOptions
+{
+ AFPropertyListResponseSerializer *serializer = [[self alloc] init];
+ serializer.format = format;
+ serializer.readOptions = readOptions;
+
+ return serializer;
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.acceptableContentTypes = [[NSSet alloc] initWithObjects:@"application/x-plist", nil];
+
+ return self;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+ data:(NSData *)data
+ error:(NSError *__autoreleasing *)error
+{
+ if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+ if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+ return nil;
+ }
+ }
+
+ id responseObject;
+ NSError *serializationError = nil;
+
+ if (data) {
+ responseObject = [NSPropertyListSerialization propertyListWithData:data options:self.readOptions format:NULL error:&serializationError];
+ }
+
+ if (error) {
+ *error = AFErrorWithUnderlyingError(serializationError, *error);
+ }
+
+ return responseObject;
+}
+
+#pragma mark - NSSecureCoding
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ self = [super initWithCoder:decoder];
+ if (!self) {
+ return nil;
+ }
+
+ self.format = (NSPropertyListFormat)[[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(format))] unsignedIntegerValue];
+ self.readOptions = [[decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(readOptions))] unsignedIntegerValue];
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [super encodeWithCoder:coder];
+
+ [coder encodeObject:@(self.format) forKey:NSStringFromSelector(@selector(format))];
+ [coder encodeObject:@(self.readOptions) forKey:NSStringFromSelector(@selector(readOptions))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFPropertyListResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+ serializer.format = self.format;
+ serializer.readOptions = self.readOptions;
+
+ return serializer;
+}
+
+@end
+
+#pragma mark -
+
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+#import <CoreGraphics/CoreGraphics.h>
+#import <UIKit/UIKit.h>
+
+@interface UIImage (AFNetworkingSafeImageLoading)
++ (UIImage *)af_safeImageWithData:(NSData *)data;
+@end
+
+static NSLock* imageLock = nil;
+
+@implementation UIImage (AFNetworkingSafeImageLoading)
+
++ (UIImage *)af_safeImageWithData:(NSData *)data {
+ UIImage* image = nil;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ imageLock = [[NSLock alloc] init];
+ });
+
+ [imageLock lock];
+ image = [UIImage imageWithData:data];
+ [imageLock unlock];
+ return image;
+}
+
+@end
+
+static UIImage * AFImageWithDataAtScale(NSData *data, CGFloat scale) {
+ UIImage *image = [UIImage af_safeImageWithData:data];
+ if (image.images) {
+ return image;
+ }
+
+ return [[UIImage alloc] initWithCGImage:[image CGImage] scale:scale orientation:image.imageOrientation];
+}
+
+static UIImage * AFInflatedImageFromResponseWithDataAtScale(NSHTTPURLResponse *response, NSData *data, CGFloat scale) {
+ if (!data || [data length] == 0) {
+ return nil;
+ }
+
+ CGImageRef imageRef = NULL;
+ CGDataProviderRef dataProvider = CGDataProviderCreateWithCFData((__bridge CFDataRef)data);
+
+ if ([response.MIMEType isEqualToString:@"image/png"]) {
+ imageRef = CGImageCreateWithPNGDataProvider(dataProvider, NULL, true, kCGRenderingIntentDefault);
+ } else if ([response.MIMEType isEqualToString:@"image/jpeg"]) {
+ imageRef = CGImageCreateWithJPEGDataProvider(dataProvider, NULL, true, kCGRenderingIntentDefault);
+
+ if (imageRef) {
+ CGColorSpaceRef imageColorSpace = CGImageGetColorSpace(imageRef);
+ CGColorSpaceModel imageColorSpaceModel = CGColorSpaceGetModel(imageColorSpace);
+
+ // CGImageCreateWithJPEGDataProvider does not properly handle CMKY, so fall back to AFImageWithDataAtScale
+ if (imageColorSpaceModel == kCGColorSpaceModelCMYK) {
+ CGImageRelease(imageRef);
+ imageRef = NULL;
+ }
+ }
+ }
+
+ CGDataProviderRelease(dataProvider);
+
+ UIImage *image = AFImageWithDataAtScale(data, scale);
+ if (!imageRef) {
+ if (image.images || !image) {
+ return image;
+ }
+
+ imageRef = CGImageCreateCopy([image CGImage]);
+ if (!imageRef) {
+ return nil;
+ }
+ }
+
+ size_t width = CGImageGetWidth(imageRef);
+ size_t height = CGImageGetHeight(imageRef);
+ size_t bitsPerComponent = CGImageGetBitsPerComponent(imageRef);
+
+ if (width * height > 1024 * 1024 || bitsPerComponent > 8) {
+ CGImageRelease(imageRef);
+
+ return image;
+ }
+
+ // CGImageGetBytesPerRow() calculates incorrectly in iOS 5.0, so defer to CGBitmapContextCreate
+ size_t bytesPerRow = 0;
+ CGColorSpaceRef colorSpace = CGColorSpaceCreateDeviceRGB();
+ CGColorSpaceModel colorSpaceModel = CGColorSpaceGetModel(colorSpace);
+ CGBitmapInfo bitmapInfo = CGImageGetBitmapInfo(imageRef);
+
+ if (colorSpaceModel == kCGColorSpaceModelRGB) {
+ uint32_t alpha = (bitmapInfo & kCGBitmapAlphaInfoMask);
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wassign-enum"
+ if (alpha == kCGImageAlphaNone) {
+ bitmapInfo &= ~kCGBitmapAlphaInfoMask;
+ bitmapInfo |= kCGImageAlphaNoneSkipFirst;
+ } else if (!(alpha == kCGImageAlphaNoneSkipFirst || alpha == kCGImageAlphaNoneSkipLast)) {
+ bitmapInfo &= ~kCGBitmapAlphaInfoMask;
+ bitmapInfo |= kCGImageAlphaPremultipliedFirst;
+ }
+#pragma clang diagnostic pop
+ }
+
+ CGContextRef context = CGBitmapContextCreate(NULL, width, height, bitsPerComponent, bytesPerRow, colorSpace, bitmapInfo);
+
+ CGColorSpaceRelease(colorSpace);
+
+ if (!context) {
+ CGImageRelease(imageRef);
+
+ return image;
+ }
+
+ CGContextDrawImage(context, CGRectMake(0.0f, 0.0f, width, height), imageRef);
+ CGImageRef inflatedImageRef = CGBitmapContextCreateImage(context);
+
+ CGContextRelease(context);
+
+ UIImage *inflatedImage = [[UIImage alloc] initWithCGImage:inflatedImageRef scale:scale orientation:image.imageOrientation];
+
+ CGImageRelease(inflatedImageRef);
+ CGImageRelease(imageRef);
+
+ return inflatedImage;
+}
+#endif
+
+
+@implementation AFImageResponseSerializer
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.acceptableContentTypes = [[NSSet alloc] initWithObjects:@"image/tiff", @"image/jpeg", @"image/gif", @"image/png", @"image/ico", @"image/x-icon", @"image/bmp", @"image/x-bmp", @"image/x-xbitmap", @"image/x-win-bitmap", nil];
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+ self.imageScale = [[UIScreen mainScreen] scale];
+ self.automaticallyInflatesResponseImage = YES;
+#elif TARGET_OS_WATCH
+ self.imageScale = [[WKInterfaceDevice currentDevice] screenScale];
+ self.automaticallyInflatesResponseImage = YES;
+#endif
+
+ return self;
+}
+
+#pragma mark - AFURLResponseSerializer
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+ data:(NSData *)data
+ error:(NSError *__autoreleasing *)error
+{
+ if (![self validateResponse:(NSHTTPURLResponse *)response data:data error:error]) {
+ if (!error || AFErrorOrUnderlyingErrorHasCodeInDomain(*error, NSURLErrorCannotDecodeContentData, AFURLResponseSerializationErrorDomain)) {
+ return nil;
+ }
+ }
+
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+ if (self.automaticallyInflatesResponseImage) {
+ return AFInflatedImageFromResponseWithDataAtScale((NSHTTPURLResponse *)response, data, self.imageScale);
+ } else {
+ return AFImageWithDataAtScale(data, self.imageScale);
+ }
+#else
+ // Ensure that the image is set to it's correct pixel width and height
+ NSBitmapImageRep *bitimage = [[NSBitmapImageRep alloc] initWithData:data];
+ NSImage *image = [[NSImage alloc] initWithSize:NSMakeSize([bitimage pixelsWide], [bitimage pixelsHigh])];
+ [image addRepresentation:bitimage];
+
+ return image;
+#endif
+
+ return nil;
+}
+
+#pragma mark - NSSecureCoding
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ self = [super initWithCoder:decoder];
+ if (!self) {
+ return nil;
+ }
+
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+ NSNumber *imageScale = [decoder decodeObjectOfClass:[NSNumber class] forKey:NSStringFromSelector(@selector(imageScale))];
+#if CGFLOAT_IS_DOUBLE
+ self.imageScale = [imageScale doubleValue];
+#else
+ self.imageScale = [imageScale floatValue];
+#endif
+
+ self.automaticallyInflatesResponseImage = [decoder decodeBoolForKey:NSStringFromSelector(@selector(automaticallyInflatesResponseImage))];
+#endif
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [super encodeWithCoder:coder];
+
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+ [coder encodeObject:@(self.imageScale) forKey:NSStringFromSelector(@selector(imageScale))];
+ [coder encodeBool:self.automaticallyInflatesResponseImage forKey:NSStringFromSelector(@selector(automaticallyInflatesResponseImage))];
+#endif
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFImageResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+
+#if TARGET_OS_IOS || TARGET_OS_TV || TARGET_OS_WATCH
+ serializer.imageScale = self.imageScale;
+ serializer.automaticallyInflatesResponseImage = self.automaticallyInflatesResponseImage;
+#endif
+
+ return serializer;
+}
+
+@end
+
+#pragma mark -
+
+@interface AFCompoundResponseSerializer ()
+@property (readwrite, nonatomic, copy) NSArray *responseSerializers;
+@end
+
+@implementation AFCompoundResponseSerializer
+
++ (instancetype)compoundSerializerWithResponseSerializers:(NSArray *)responseSerializers {
+ AFCompoundResponseSerializer *serializer = [[self alloc] init];
+ serializer.responseSerializers = responseSerializers;
+
+ return serializer;
+}
+
+#pragma mark - AFURLResponseSerialization
+
+- (id)responseObjectForResponse:(NSURLResponse *)response
+ data:(NSData *)data
+ error:(NSError *__autoreleasing *)error
+{
+ for (id <AFURLResponseSerialization> serializer in self.responseSerializers) {
+ if (![serializer isKindOfClass:[AFHTTPResponseSerializer class]]) {
+ continue;
+ }
+
+ NSError *serializerError = nil;
+ id responseObject = [serializer responseObjectForResponse:response data:data error:&serializerError];
+ if (responseObject) {
+ if (error) {
+ *error = AFErrorWithUnderlyingError(serializerError, *error);
+ }
+
+ return responseObject;
+ }
+ }
+
+ return [super responseObjectForResponse:response data:data error:error];
+}
+
+#pragma mark - NSSecureCoding
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ self = [super initWithCoder:decoder];
+ if (!self) {
+ return nil;
+ }
+
+ self.responseSerializers = [decoder decodeObjectOfClass:[NSArray class] forKey:NSStringFromSelector(@selector(responseSerializers))];
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [super encodeWithCoder:coder];
+
+ [coder encodeObject:self.responseSerializers forKey:NSStringFromSelector(@selector(responseSerializers))];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ AFCompoundResponseSerializer *serializer = [[[self class] allocWithZone:zone] init];
+ serializer.responseSerializers = self.responseSerializers;
+
+ return serializer;
+}
+
+@end
diff --git a/SocketDemo/Utils/AFNetworking/AFURLSessionManager.h b/SocketDemo/Utils/AFNetworking/AFURLSessionManager.h
new file mode 100755
index 0000000..be91828
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFURLSessionManager.h
@@ -0,0 +1,499 @@
+// AFURLSessionManager.h
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+
+#import <Foundation/Foundation.h>
+
+#import "AFURLResponseSerialization.h"
+#import "AFURLRequestSerialization.h"
+#import "AFSecurityPolicy.h"
+#if !TARGET_OS_WATCH
+#import "AFNetworkReachabilityManager.h"
+#endif
+
+/**
+ `AFURLSessionManager` creates and manages an `NSURLSession` object based on a specified `NSURLSessionConfiguration` object, which conforms to `<NSURLSessionTaskDelegate>`, `<NSURLSessionDataDelegate>`, `<NSURLSessionDownloadDelegate>`, and `<NSURLSessionDelegate>`.
+
+ ## Subclassing Notes
+
+ This is the base class for `AFHTTPSessionManager`, which adds functionality specific to making HTTP requests. If you are looking to extend `AFURLSessionManager` specifically for HTTP, consider subclassing `AFHTTPSessionManager` instead.
+
+ ## NSURLSession & NSURLSessionTask Delegate Methods
+
+ `AFURLSessionManager` implements the following delegate methods:
+
+ ### `NSURLSessionDelegate`
+
+ - `URLSession:didBecomeInvalidWithError:`
+ - `URLSession:didReceiveChallenge:completionHandler:`
+ - `URLSessionDidFinishEventsForBackgroundURLSession:`
+
+ ### `NSURLSessionTaskDelegate`
+
+ - `URLSession:willPerformHTTPRedirection:newRequest:completionHandler:`
+ - `URLSession:task:didReceiveChallenge:completionHandler:`
+ - `URLSession:task:didSendBodyData:totalBytesSent:totalBytesExpectedToSend:`
+ - `URLSession:task:didCompleteWithError:`
+
+ ### `NSURLSessionDataDelegate`
+
+ - `URLSession:dataTask:didReceiveResponse:completionHandler:`
+ - `URLSession:dataTask:didBecomeDownloadTask:`
+ - `URLSession:dataTask:didReceiveData:`
+ - `URLSession:dataTask:willCacheResponse:completionHandler:`
+
+ ### `NSURLSessionDownloadDelegate`
+
+ - `URLSession:downloadTask:didFinishDownloadingToURL:`
+ - `URLSession:downloadTask:didWriteData:totalBytesWritten:totalBytesWritten:totalBytesExpectedToWrite:`
+ - `URLSession:downloadTask:didResumeAtOffset:expectedTotalBytes:`
+
+ If any of these methods are overridden in a subclass, they _must_ call the `super` implementation first.
+
+ ## Network Reachability Monitoring
+
+ Network reachability status and change monitoring is available through the `reachabilityManager` property. Applications may choose to monitor network reachability conditions in order to prevent or suspend any outbound requests. See `AFNetworkReachabilityManager` for more details.
+
+ ## NSCoding Caveats
+
+ - Encoded managers do not include any block properties. Be sure to set delegate callback blocks when using `-initWithCoder:` or `NSKeyedUnarchiver`.
+
+ ## NSCopying Caveats
+
+ - `-copy` and `-copyWithZone:` return a new manager with a new `NSURLSession` created from the configuration of the original.
+ - Operation copies do not include any delegate callback blocks, as they often strongly captures a reference to `self`, which would otherwise have the unintuitive side-effect of pointing to the _original_ session manager when copied.
+
+ @warning Managers for background sessions must be owned for the duration of their use. This can be accomplished by creating an application-wide or shared singleton instance.
+ */
+
+NS_ASSUME_NONNULL_BEGIN
+
+@interface AFURLSessionManager : NSObject <NSURLSessionDelegate, NSURLSessionTaskDelegate, NSURLSessionDataDelegate, NSURLSessionDownloadDelegate, NSSecureCoding, NSCopying>
+
+/**
+ The managed session.
+ */
+@property (readonly, nonatomic, strong) NSURLSession *session;
+
+/**
+ The operation queue on which delegate callbacks are run.
+ */
+@property (readonly, nonatomic, strong) NSOperationQueue *operationQueue;
+
+/**
+ Responses sent from the server in data tasks created with `dataTaskWithRequest:success:failure:` and run using the `GET` / `POST` / et al. convenience methods are automatically validated and serialized by the response serializer. By default, this property is set to an instance of `AFJSONResponseSerializer`.
+
+ @warning `responseSerializer` must not be `nil`.
+ */
+@property (nonatomic, strong) id <AFURLResponseSerialization> responseSerializer;
+
+///-------------------------------
+/// @name Managing Security Policy
+///-------------------------------
+
+/**
+ The security policy used by created session to evaluate server trust for secure connections. `AFURLSessionManager` uses the `defaultPolicy` unless otherwise specified.
+ */
+@property (nonatomic, strong) AFSecurityPolicy *securityPolicy;
+
+#if !TARGET_OS_WATCH
+///--------------------------------------
+/// @name Monitoring Network Reachability
+///--------------------------------------
+
+/**
+ The network reachability manager. `AFURLSessionManager` uses the `sharedManager` by default.
+ */
+@property (readwrite, nonatomic, strong) AFNetworkReachabilityManager *reachabilityManager;
+#endif
+
+///----------------------------
+/// @name Getting Session Tasks
+///----------------------------
+
+/**
+ The data, upload, and download tasks currently run by the managed session.
+ */
+@property (readonly, nonatomic, strong) NSArray <NSURLSessionTask *> *tasks;
+
+/**
+ The data tasks currently run by the managed session.
+ */
+@property (readonly, nonatomic, strong) NSArray <NSURLSessionDataTask *> *dataTasks;
+
+/**
+ The upload tasks currently run by the managed session.
+ */
+@property (readonly, nonatomic, strong) NSArray <NSURLSessionUploadTask *> *uploadTasks;
+
+/**
+ The download tasks currently run by the managed session.
+ */
+@property (readonly, nonatomic, strong) NSArray <NSURLSessionDownloadTask *> *downloadTasks;
+
+///-------------------------------
+/// @name Managing Callback Queues
+///-------------------------------
+
+/**
+ The dispatch queue for `completionBlock`. If `NULL` (default), the main queue is used.
+ */
+@property (nonatomic, strong, nullable) dispatch_queue_t completionQueue;
+
+/**
+ The dispatch group for `completionBlock`. If `NULL` (default), a private dispatch group is used.
+ */
+@property (nonatomic, strong, nullable) dispatch_group_t completionGroup;
+
+///---------------------------------
+/// @name Working Around System Bugs
+///---------------------------------
+
+/**
+ Whether to attempt to retry creation of upload tasks for background sessions when initial call returns `nil`. `NO` by default.
+
+ @bug As of iOS 7.0, there is a bug where upload tasks created for background tasks are sometimes `nil`. As a workaround, if this property is `YES`, AFNetworking will follow Apple's recommendation to try creating the task again.
+
+ @see https://github.com/AFNetworking/AFNetworking/issues/1675
+ */
+@property (nonatomic, assign) BOOL attemptsToRecreateUploadTasksForBackgroundSessions;
+
+///---------------------
+/// @name Initialization
+///---------------------
+
+/**
+ Creates and returns a manager for a session created with the specified configuration. This is the designated initializer.
+
+ @param configuration The configuration used to create the managed session.
+
+ @return A manager for a newly-created session.
+ */
+- (instancetype)initWithSessionConfiguration:(nullable NSURLSessionConfiguration *)configuration NS_DESIGNATED_INITIALIZER;
+
+/**
+ Invalidates the managed session, optionally canceling pending tasks.
+
+ @param cancelPendingTasks Whether or not to cancel pending tasks.
+ */
+- (void)invalidateSessionCancelingTasks:(BOOL)cancelPendingTasks;
+
+///-------------------------
+/// @name Running Data Tasks
+///-------------------------
+
+/**
+ Creates an `NSURLSessionDataTask` with the specified request.
+
+ @param request The HTTP request for the request.
+ @param completionHandler A block object to be executed when the task finishes. This block has no return value and takes three arguments: the server response, the response object created by that serializer, and the error that occurred, if any.
+ */
+- (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request
+ completionHandler:(nullable void (^)(NSURLResponse *response, id _Nullable responseObject, NSError * _Nullable error))completionHandler;
+
+/**
+ Creates an `NSURLSessionDataTask` with the specified request.
+
+ @param request The HTTP request for the request.
+ @param uploadProgress A block object to be executed when the upload progress is updated. Note this block is called on the session queue, not the main queue.
+ @param downloadProgress A block object to be executed when the download progress is updated. Note this block is called on the session queue, not the main queue.
+ @param completionHandler A block object to be executed when the task finishes. This block has no return value and takes three arguments: the server response, the response object created by that serializer, and the error that occurred, if any.
+ */
+- (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request
+ uploadProgress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ downloadProgress:(nullable void (^)(NSProgress *downloadProgress)) downloadProgressBlock
+ completionHandler:(nullable void (^)(NSURLResponse *response, id _Nullable responseObject, NSError * _Nullable error))completionHandler;
+
+///---------------------------
+/// @name Running Upload Tasks
+///---------------------------
+
+/**
+ Creates an `NSURLSessionUploadTask` with the specified request for a local file.
+
+ @param request The HTTP request for the request.
+ @param fileURL A URL to the local file to be uploaded.
+ @param progress A block object to be executed when the upload progress is updated. Note this block is called on the session queue, not the main queue.
+ @param completionHandler A block object to be executed when the task finishes. This block has no return value and takes three arguments: the server response, the response object created by that serializer, and the error that occurred, if any.
+
+ @see `attemptsToRecreateUploadTasksForBackgroundSessions`
+ */
+- (NSURLSessionUploadTask *)uploadTaskWithRequest:(NSURLRequest *)request
+ fromFile:(NSURL *)fileURL
+ progress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ completionHandler:(nullable void (^)(NSURLResponse *response, id _Nullable responseObject, NSError * _Nullable error))completionHandler;
+
+/**
+ Creates an `NSURLSessionUploadTask` with the specified request for an HTTP body.
+
+ @param request The HTTP request for the request.
+ @param bodyData A data object containing the HTTP body to be uploaded.
+ @param progress A block object to be executed when the upload progress is updated. Note this block is called on the session queue, not the main queue.
+ @param completionHandler A block object to be executed when the task finishes. This block has no return value and takes three arguments: the server response, the response object created by that serializer, and the error that occurred, if any.
+ */
+- (NSURLSessionUploadTask *)uploadTaskWithRequest:(NSURLRequest *)request
+ fromData:(nullable NSData *)bodyData
+ progress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ completionHandler:(nullable void (^)(NSURLResponse *response, id _Nullable responseObject, NSError * _Nullable error))completionHandler;
+
+/**
+ Creates an `NSURLSessionUploadTask` with the specified streaming request.
+
+ @param request The HTTP request for the request.
+ @param progress A block object to be executed when the upload progress is updated. Note this block is called on the session queue, not the main queue.
+ @param completionHandler A block object to be executed when the task finishes. This block has no return value and takes three arguments: the server response, the response object created by that serializer, and the error that occurred, if any.
+ */
+- (NSURLSessionUploadTask *)uploadTaskWithStreamedRequest:(NSURLRequest *)request
+ progress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ completionHandler:(nullable void (^)(NSURLResponse *response, id _Nullable responseObject, NSError * _Nullable error))completionHandler;
+
+///-----------------------------
+/// @name Running Download Tasks
+///-----------------------------
+
+/**
+ Creates an `NSURLSessionDownloadTask` with the specified request.
+
+ @param request The HTTP request for the request.
+ @param progress A block object to be executed when the download progress is updated. Note this block is called on the session queue, not the main queue.
+ @param destination A block object to be executed in order to determine the destination of the downloaded file. This block takes two arguments, the target path & the server response, and returns the desired file URL of the resulting download. The temporary file used during the download will be automatically deleted after being moved to the returned URL.
+ @param completionHandler A block to be executed when a task finishes. This block has no return value and takes three arguments: the server response, the path of the downloaded file, and the error describing the network or parsing error that occurred, if any.
+
+ @warning If using a background `NSURLSessionConfiguration` on iOS, these blocks will be lost when the app is terminated. Background sessions may prefer to use `-setDownloadTaskDidFinishDownloadingBlock:` to specify the URL for saving the downloaded file, rather than the destination block of this method.
+ */
+- (NSURLSessionDownloadTask *)downloadTaskWithRequest:(NSURLRequest *)request
+ progress:(nullable void (^)(NSProgress *downloadProgress)) downloadProgressBlock
+ destination:(nullable NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+ completionHandler:(nullable void (^)(NSURLResponse *response, NSURL * _Nullable filePath, NSError * _Nullable error))completionHandler;
+
+/**
+ Creates an `NSURLSessionDownloadTask` with the specified resume data.
+
+ @param resumeData The data used to resume downloading.
+ @param progress A block object to be executed when the download progress is updated. Note this block is called on the session queue, not the main queue.
+ @param destination A block object to be executed in order to determine the destination of the downloaded file. This block takes two arguments, the target path & the server response, and returns the desired file URL of the resulting download. The temporary file used during the download will be automatically deleted after being moved to the returned URL.
+ @param completionHandler A block to be executed when a task finishes. This block has no return value and takes three arguments: the server response, the path of the downloaded file, and the error describing the network or parsing error that occurred, if any.
+ */
+- (NSURLSessionDownloadTask *)downloadTaskWithResumeData:(NSData *)resumeData
+ progress:(nullable void (^)(NSProgress *downloadProgress)) downloadProgressBlock
+ destination:(nullable NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+ completionHandler:(nullable void (^)(NSURLResponse *response, NSURL * _Nullable filePath, NSError * _Nullable error))completionHandler;
+
+///---------------------------------
+/// @name Getting Progress for Tasks
+///---------------------------------
+
+/**
+ Returns the upload progress of the specified task.
+
+ @param task The session task. Must not be `nil`.
+
+ @return An `NSProgress` object reporting the upload progress of a task, or `nil` if the progress is unavailable.
+ */
+- (nullable NSProgress *)uploadProgressForTask:(NSURLSessionTask *)task;
+
+/**
+ Returns the download progress of the specified task.
+
+ @param task The session task. Must not be `nil`.
+
+ @return An `NSProgress` object reporting the download progress of a task, or `nil` if the progress is unavailable.
+ */
+- (nullable NSProgress *)downloadProgressForTask:(NSURLSessionTask *)task;
+
+///-----------------------------------------
+/// @name Setting Session Delegate Callbacks
+///-----------------------------------------
+
+/**
+ Sets a block to be executed when the managed session becomes invalid, as handled by the `NSURLSessionDelegate` method `URLSession:didBecomeInvalidWithError:`.
+
+ @param block A block object to be executed when the managed session becomes invalid. The block has no return value, and takes two arguments: the session, and the error related to the cause of invalidation.
+ */
+- (void)setSessionDidBecomeInvalidBlock:(nullable void (^)(NSURLSession *session, NSError *error))block;
+
+/**
+ Sets a block to be executed when a connection level authentication challenge has occurred, as handled by the `NSURLSessionDelegate` method `URLSession:didReceiveChallenge:completionHandler:`.
+
+ @param block A block object to be executed when a connection level authentication challenge has occurred. The block returns the disposition of the authentication challenge, and takes three arguments: the session, the authentication challenge, and a pointer to the credential that should be used to resolve the challenge.
+ */
+- (void)setSessionDidReceiveAuthenticationChallengeBlock:(nullable NSURLSessionAuthChallengeDisposition (^)(NSURLSession *session, NSURLAuthenticationChallenge *challenge, NSURLCredential * _Nullable __autoreleasing * _Nullable credential))block;
+
+///--------------------------------------
+/// @name Setting Task Delegate Callbacks
+///--------------------------------------
+
+/**
+ Sets a block to be executed when a task requires a new request body stream to send to the remote server, as handled by the `NSURLSessionTaskDelegate` method `URLSession:task:needNewBodyStream:`.
+
+ @param block A block object to be executed when a task requires a new request body stream.
+ */
+- (void)setTaskNeedNewBodyStreamBlock:(nullable NSInputStream * (^)(NSURLSession *session, NSURLSessionTask *task))block;
+
+/**
+ Sets a block to be executed when an HTTP request is attempting to perform a redirection to a different URL, as handled by the `NSURLSessionTaskDelegate` method `URLSession:willPerformHTTPRedirection:newRequest:completionHandler:`.
+
+ @param block A block object to be executed when an HTTP request is attempting to perform a redirection to a different URL. The block returns the request to be made for the redirection, and takes four arguments: the session, the task, the redirection response, and the request corresponding to the redirection response.
+ */
+- (void)setTaskWillPerformHTTPRedirectionBlock:(nullable NSURLRequest * (^)(NSURLSession *session, NSURLSessionTask *task, NSURLResponse *response, NSURLRequest *request))block;
+
+/**
+ Sets a block to be executed when a session task has received a request specific authentication challenge, as handled by the `NSURLSessionTaskDelegate` method `URLSession:task:didReceiveChallenge:completionHandler:`.
+
+ @param block A block object to be executed when a session task has received a request specific authentication challenge. The block returns the disposition of the authentication challenge, and takes four arguments: the session, the task, the authentication challenge, and a pointer to the credential that should be used to resolve the challenge.
+ */
+- (void)setTaskDidReceiveAuthenticationChallengeBlock:(nullable NSURLSessionAuthChallengeDisposition (^)(NSURLSession *session, NSURLSessionTask *task, NSURLAuthenticationChallenge *challenge, NSURLCredential * _Nullable __autoreleasing * _Nullable credential))block;
+
+/**
+ Sets a block to be executed periodically to track upload progress, as handled by the `NSURLSessionTaskDelegate` method `URLSession:task:didSendBodyData:totalBytesSent:totalBytesExpectedToSend:`.
+
+ @param block A block object to be called when an undetermined number of bytes have been uploaded to the server. This block has no return value and takes five arguments: the session, the task, the number of bytes written since the last time the upload progress block was called, the total bytes written, and the total bytes expected to be written during the request, as initially determined by the length of the HTTP body. This block may be called multiple times, and will execute on the main thread.
+ */
+- (void)setTaskDidSendBodyDataBlock:(nullable void (^)(NSURLSession *session, NSURLSessionTask *task, int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend))block;
+
+/**
+ Sets a block to be executed as the last message related to a specific task, as handled by the `NSURLSessionTaskDelegate` method `URLSession:task:didCompleteWithError:`.
+
+ @param block A block object to be executed when a session task is completed. The block has no return value, and takes three arguments: the session, the task, and any error that occurred in the process of executing the task.
+ */
+- (void)setTaskDidCompleteBlock:(nullable void (^)(NSURLSession *session, NSURLSessionTask *task, NSError * _Nullable error))block;
+
+///-------------------------------------------
+/// @name Setting Data Task Delegate Callbacks
+///-------------------------------------------
+
+/**
+ Sets a block to be executed when a data task has received a response, as handled by the `NSURLSessionDataDelegate` method `URLSession:dataTask:didReceiveResponse:completionHandler:`.
+
+ @param block A block object to be executed when a data task has received a response. The block returns the disposition of the session response, and takes three arguments: the session, the data task, and the received response.
+ */
+- (void)setDataTaskDidReceiveResponseBlock:(nullable NSURLSessionResponseDisposition (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLResponse *response))block;
+
+/**
+ Sets a block to be executed when a data task has become a download task, as handled by the `NSURLSessionDataDelegate` method `URLSession:dataTask:didBecomeDownloadTask:`.
+
+ @param block A block object to be executed when a data task has become a download task. The block has no return value, and takes three arguments: the session, the data task, and the download task it has become.
+ */
+- (void)setDataTaskDidBecomeDownloadTaskBlock:(nullable void (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLSessionDownloadTask *downloadTask))block;
+
+/**
+ Sets a block to be executed when a data task receives data, as handled by the `NSURLSessionDataDelegate` method `URLSession:dataTask:didReceiveData:`.
+
+ @param block A block object to be called when an undetermined number of bytes have been downloaded from the server. This block has no return value and takes three arguments: the session, the data task, and the data received. This block may be called multiple times, and will execute on the session manager operation queue.
+ */
+- (void)setDataTaskDidReceiveDataBlock:(nullable void (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSData *data))block;
+
+/**
+ Sets a block to be executed to determine the caching behavior of a data task, as handled by the `NSURLSessionDataDelegate` method `URLSession:dataTask:willCacheResponse:completionHandler:`.
+
+ @param block A block object to be executed to determine the caching behavior of a data task. The block returns the response to cache, and takes three arguments: the session, the data task, and the proposed cached URL response.
+ */
+- (void)setDataTaskWillCacheResponseBlock:(nullable NSCachedURLResponse * (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSCachedURLResponse *proposedResponse))block;
+
+/**
+ Sets a block to be executed once all messages enqueued for a session have been delivered, as handled by the `NSURLSessionDataDelegate` method `URLSessionDidFinishEventsForBackgroundURLSession:`.
+
+ @param block A block object to be executed once all messages enqueued for a session have been delivered. The block has no return value and takes a single argument: the session.
+ */
+- (void)setDidFinishEventsForBackgroundURLSessionBlock:(nullable void (^)(NSURLSession *session))block;
+
+///-----------------------------------------------
+/// @name Setting Download Task Delegate Callbacks
+///-----------------------------------------------
+
+/**
+ Sets a block to be executed when a download task has completed a download, as handled by the `NSURLSessionDownloadDelegate` method `URLSession:downloadTask:didFinishDownloadingToURL:`.
+
+ @param block A block object to be executed when a download task has completed. The block returns the URL the download should be moved to, and takes three arguments: the session, the download task, and the temporary location of the downloaded file. If the file manager encounters an error while attempting to move the temporary file to the destination, an `AFURLSessionDownloadTaskDidFailToMoveFileNotification` will be posted, with the download task as its object, and the user info of the error.
+ */
+- (void)setDownloadTaskDidFinishDownloadingBlock:(nullable NSURL * _Nullable (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, NSURL *location))block;
+
+/**
+ Sets a block to be executed periodically to track download progress, as handled by the `NSURLSessionDownloadDelegate` method `URLSession:downloadTask:didWriteData:totalBytesWritten:totalBytesWritten:totalBytesExpectedToWrite:`.
+
+ @param block A block object to be called when an undetermined number of bytes have been downloaded from the server. This block has no return value and takes five arguments: the session, the download task, the number of bytes read since the last time the download progress block was called, the total bytes read, and the total bytes expected to be read during the request, as initially determined by the expected content size of the `NSHTTPURLResponse` object. This block may be called multiple times, and will execute on the session manager operation queue.
+ */
+- (void)setDownloadTaskDidWriteDataBlock:(nullable void (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite))block;
+
+/**
+ Sets a block to be executed when a download task has been resumed, as handled by the `NSURLSessionDownloadDelegate` method `URLSession:downloadTask:didResumeAtOffset:expectedTotalBytes:`.
+
+ @param block A block object to be executed when a download task has been resumed. The block has no return value and takes four arguments: the session, the download task, the file offset of the resumed download, and the total number of bytes expected to be downloaded.
+ */
+- (void)setDownloadTaskDidResumeBlock:(nullable void (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t fileOffset, int64_t expectedTotalBytes))block;
+
+@end
+
+///--------------------
+/// @name Notifications
+///--------------------
+
+/**
+ Posted when a task resumes.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidResumeNotification;
+
+/**
+ Posted when a task finishes executing. Includes a userInfo dictionary with additional information about the task.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteNotification;
+
+/**
+ Posted when a task suspends its execution.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidSuspendNotification;
+
+/**
+ Posted when a session is invalidated.
+ */
+FOUNDATION_EXPORT NSString * const AFURLSessionDidInvalidateNotification;
+
+/**
+ Posted when a session download task encountered an error when moving the temporary download file to a specified destination.
+ */
+FOUNDATION_EXPORT NSString * const AFURLSessionDownloadTaskDidFailToMoveFileNotification;
+
+/**
+ The raw response data of the task. Included in the userInfo dictionary of the `AFNetworkingTaskDidCompleteNotification` if response data exists for the task.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteResponseDataKey;
+
+/**
+ The serialized response object of the task. Included in the userInfo dictionary of the `AFNetworkingTaskDidCompleteNotification` if the response was serialized.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteSerializedResponseKey;
+
+/**
+ The response serializer used to serialize the response. Included in the userInfo dictionary of the `AFNetworkingTaskDidCompleteNotification` if the task has an associated response serializer.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteResponseSerializerKey;
+
+/**
+ The file path associated with the download task. Included in the userInfo dictionary of the `AFNetworkingTaskDidCompleteNotification` if an the response data has been stored directly to disk.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteAssetPathKey;
+
+/**
+ Any error associated with the task, or the serialization of the response. Included in the userInfo dictionary of the `AFNetworkingTaskDidCompleteNotification` if an error exists.
+ */
+FOUNDATION_EXPORT NSString * const AFNetworkingTaskDidCompleteErrorKey;
+
+NS_ASSUME_NONNULL_END
diff --git a/SocketDemo/Utils/AFNetworking/AFURLSessionManager.m b/SocketDemo/Utils/AFNetworking/AFURLSessionManager.m
new file mode 100755
index 0000000..5dc391c
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/AFURLSessionManager.m
@@ -0,0 +1,1244 @@
+// AFURLSessionManager.m
+// Copyright (c) 2011���2015 Alamofire Software Foundation (http://alamofire.org/)
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFURLSessionManager.h"
+#import <objc/runtime.h>
+
+#ifndef NSFoundationVersionNumber_iOS_8_0
+#define NSFoundationVersionNumber_With_Fixed_5871104061079552_bug 1140.11
+#else
+#define NSFoundationVersionNumber_With_Fixed_5871104061079552_bug NSFoundationVersionNumber_iOS_8_0
+#endif
+
+static dispatch_queue_t url_session_manager_creation_queue() {
+ static dispatch_queue_t af_url_session_manager_creation_queue;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ af_url_session_manager_creation_queue = dispatch_queue_create("com.alamofire.networking.session.manager.creation", DISPATCH_QUEUE_SERIAL);
+ });
+
+ return af_url_session_manager_creation_queue;
+}
+
+static void url_session_manager_create_task_safely(dispatch_block_t block) {
+ if (NSFoundationVersionNumber < NSFoundationVersionNumber_With_Fixed_5871104061079552_bug) {
+ // Fix of bug
+ // Open Radar:http://openradar.appspot.com/radar?id=5871104061079552 (status: Fixed in iOS8)
+ // Issue about:https://github.com/AFNetworking/AFNetworking/issues/2093
+ dispatch_sync(url_session_manager_creation_queue(), block);
+ } else {
+ block();
+ }
+}
+
+static dispatch_queue_t url_session_manager_processing_queue() {
+ static dispatch_queue_t af_url_session_manager_processing_queue;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ af_url_session_manager_processing_queue = dispatch_queue_create("com.alamofire.networking.session.manager.processing", DISPATCH_QUEUE_CONCURRENT);
+ });
+
+ return af_url_session_manager_processing_queue;
+}
+
+static dispatch_group_t url_session_manager_completion_group() {
+ static dispatch_group_t af_url_session_manager_completion_group;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ af_url_session_manager_completion_group = dispatch_group_create();
+ });
+
+ return af_url_session_manager_completion_group;
+}
+
+NSString * const AFNetworkingTaskDidResumeNotification = @"com.alamofire.networking.task.resume";
+NSString * const AFNetworkingTaskDidCompleteNotification = @"com.alamofire.networking.task.complete";
+NSString * const AFNetworkingTaskDidSuspendNotification = @"com.alamofire.networking.task.suspend";
+NSString * const AFURLSessionDidInvalidateNotification = @"com.alamofire.networking.session.invalidate";
+NSString * const AFURLSessionDownloadTaskDidFailToMoveFileNotification = @"com.alamofire.networking.session.download.file-manager-error";
+
+NSString * const AFNetworkingTaskDidCompleteSerializedResponseKey = @"com.alamofire.networking.task.complete.serializedresponse";
+NSString * const AFNetworkingTaskDidCompleteResponseSerializerKey = @"com.alamofire.networking.task.complete.responseserializer";
+NSString * const AFNetworkingTaskDidCompleteResponseDataKey = @"com.alamofire.networking.complete.finish.responsedata";
+NSString * const AFNetworkingTaskDidCompleteErrorKey = @"com.alamofire.networking.task.complete.error";
+NSString * const AFNetworkingTaskDidCompleteAssetPathKey = @"com.alamofire.networking.task.complete.assetpath";
+
+static NSString * const AFURLSessionManagerLockName = @"com.alamofire.networking.session.manager.lock";
+
+static NSUInteger const AFMaximumNumberOfAttemptsToRecreateBackgroundSessionUploadTask = 3;
+
+static void * AFTaskStateChangedContext = &AFTaskStateChangedContext;
+
+typedef void (^AFURLSessionDidBecomeInvalidBlock)(NSURLSession *session, NSError *error);
+typedef NSURLSessionAuthChallengeDisposition (^AFURLSessionDidReceiveAuthenticationChallengeBlock)(NSURLSession *session, NSURLAuthenticationChallenge *challenge, NSURLCredential * __autoreleasing *credential);
+
+typedef NSURLRequest * (^AFURLSessionTaskWillPerformHTTPRedirectionBlock)(NSURLSession *session, NSURLSessionTask *task, NSURLResponse *response, NSURLRequest *request);
+typedef NSURLSessionAuthChallengeDisposition (^AFURLSessionTaskDidReceiveAuthenticationChallengeBlock)(NSURLSession *session, NSURLSessionTask *task, NSURLAuthenticationChallenge *challenge, NSURLCredential * __autoreleasing *credential);
+typedef void (^AFURLSessionDidFinishEventsForBackgroundURLSessionBlock)(NSURLSession *session);
+
+typedef NSInputStream * (^AFURLSessionTaskNeedNewBodyStreamBlock)(NSURLSession *session, NSURLSessionTask *task);
+typedef void (^AFURLSessionTaskDidSendBodyDataBlock)(NSURLSession *session, NSURLSessionTask *task, int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend);
+typedef void (^AFURLSessionTaskDidCompleteBlock)(NSURLSession *session, NSURLSessionTask *task, NSError *error);
+
+typedef NSURLSessionResponseDisposition (^AFURLSessionDataTaskDidReceiveResponseBlock)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLResponse *response);
+typedef void (^AFURLSessionDataTaskDidBecomeDownloadTaskBlock)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLSessionDownloadTask *downloadTask);
+typedef void (^AFURLSessionDataTaskDidReceiveDataBlock)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSData *data);
+typedef NSCachedURLResponse * (^AFURLSessionDataTaskWillCacheResponseBlock)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSCachedURLResponse *proposedResponse);
+
+typedef NSURL * (^AFURLSessionDownloadTaskDidFinishDownloadingBlock)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, NSURL *location);
+typedef void (^AFURLSessionDownloadTaskDidWriteDataBlock)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite);
+typedef void (^AFURLSessionDownloadTaskDidResumeBlock)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t fileOffset, int64_t expectedTotalBytes);
+typedef void (^AFURLSessionTaskProgressBlock)(NSProgress *);
+
+typedef void (^AFURLSessionTaskCompletionHandler)(NSURLResponse *response, id responseObject, NSError *error);
+
+
+#pragma mark -
+
+@interface AFURLSessionManagerTaskDelegate : NSObject <NSURLSessionTaskDelegate, NSURLSessionDataDelegate, NSURLSessionDownloadDelegate>
+@property (nonatomic, weak) AFURLSessionManager *manager;
+@property (nonatomic, strong) NSMutableData *mutableData;
+@property (nonatomic, strong) NSProgress *uploadProgress;
+@property (nonatomic, strong) NSProgress *downloadProgress;
+@property (nonatomic, copy) NSURL *downloadFileURL;
+@property (nonatomic, copy) AFURLSessionDownloadTaskDidFinishDownloadingBlock downloadTaskDidFinishDownloading;
+@property (nonatomic, copy) AFURLSessionTaskProgressBlock uploadProgressBlock;
+@property (nonatomic, copy) AFURLSessionTaskProgressBlock downloadProgressBlock;
+@property (nonatomic, copy) AFURLSessionTaskCompletionHandler completionHandler;
+@end
+
+@implementation AFURLSessionManagerTaskDelegate
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ self.mutableData = [NSMutableData data];
+ self.uploadProgress = [[NSProgress alloc] initWithParent:nil userInfo:nil];
+ self.uploadProgress.totalUnitCount = NSURLSessionTransferSizeUnknown;
+
+ self.downloadProgress = [[NSProgress alloc] initWithParent:nil userInfo:nil];
+ self.downloadProgress.totalUnitCount = NSURLSessionTransferSizeUnknown;
+ return self;
+}
+
+#pragma mark - NSProgress Tracking
+
+- (void)setupProgressForTask:(NSURLSessionTask *)task {
+ __weak __typeof__(task) weakTask = task;
+
+ self.uploadProgress.totalUnitCount = task.countOfBytesExpectedToSend;
+ self.downloadProgress.totalUnitCount = task.countOfBytesExpectedToReceive;
+ [self.uploadProgress setCancellable:YES];
+ [self.uploadProgress setCancellationHandler:^{
+ __typeof__(weakTask) strongTask = weakTask;
+ [strongTask cancel];
+ }];
+ [self.uploadProgress setPausable:YES];
+ [self.uploadProgress setPausingHandler:^{
+ __typeof__(weakTask) strongTask = weakTask;
+ [strongTask suspend];
+ }];
+ if ([self.uploadProgress respondsToSelector:@selector(setResumingHandler:)]) {
+ [self.uploadProgress setResumingHandler:^{
+ __typeof__(weakTask) strongTask = weakTask;
+ [strongTask resume];
+ }];
+ }
+
+ [self.downloadProgress setCancellable:YES];
+ [self.downloadProgress setCancellationHandler:^{
+ __typeof__(weakTask) strongTask = weakTask;
+ [strongTask cancel];
+ }];
+ [self.downloadProgress setPausable:YES];
+ [self.downloadProgress setPausingHandler:^{
+ __typeof__(weakTask) strongTask = weakTask;
+ [strongTask suspend];
+ }];
+
+ if ([self.downloadProgress respondsToSelector:@selector(setResumingHandler:)]) {
+ [self.downloadProgress setResumingHandler:^{
+ __typeof__(weakTask) strongTask = weakTask;
+ [strongTask resume];
+ }];
+ }
+
+ [task addObserver:self
+ forKeyPath:NSStringFromSelector(@selector(countOfBytesReceived))
+ options:NSKeyValueObservingOptionNew
+ context:NULL];
+ [task addObserver:self
+ forKeyPath:NSStringFromSelector(@selector(countOfBytesExpectedToReceive))
+ options:NSKeyValueObservingOptionNew
+ context:NULL];
+
+ [task addObserver:self
+ forKeyPath:NSStringFromSelector(@selector(countOfBytesSent))
+ options:NSKeyValueObservingOptionNew
+ context:NULL];
+ [task addObserver:self
+ forKeyPath:NSStringFromSelector(@selector(countOfBytesExpectedToSend))
+ options:NSKeyValueObservingOptionNew
+ context:NULL];
+
+ [self.downloadProgress addObserver:self
+ forKeyPath:NSStringFromSelector(@selector(fractionCompleted))
+ options:NSKeyValueObservingOptionNew
+ context:NULL];
+ [self.uploadProgress addObserver:self
+ forKeyPath:NSStringFromSelector(@selector(fractionCompleted))
+ options:NSKeyValueObservingOptionNew
+ context:NULL];
+}
+
+- (void)cleanUpProgressForTask:(NSURLSessionTask *)task {
+ [task removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesReceived))];
+ [task removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesExpectedToReceive))];
+ [task removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesSent))];
+ [task removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesExpectedToSend))];
+ [self.downloadProgress removeObserver:self forKeyPath:NSStringFromSelector(@selector(fractionCompleted))];
+ [self.uploadProgress removeObserver:self forKeyPath:NSStringFromSelector(@selector(fractionCompleted))];
+}
+
+- (void)observeValueForKeyPath:(NSString *)keyPath ofObject:(id)object change:(NSDictionary<NSString *,id> *)change context:(void *)context {
+ if ([object isKindOfClass:[NSURLSessionTask class]]) {
+ if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesReceived))]) {
+ self.downloadProgress.completedUnitCount = [change[@"new"] longLongValue];
+ } else if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesExpectedToReceive))]) {
+ self.downloadProgress.totalUnitCount = [change[@"new"] longLongValue];
+ } else if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesSent))]) {
+ self.uploadProgress.completedUnitCount = [change[@"new"] longLongValue];
+ } else if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesExpectedToSend))]) {
+ self.uploadProgress.totalUnitCount = [change[@"new"] longLongValue];
+ }
+ }
+ else if ([object isEqual:self.downloadProgress]) {
+ if (self.downloadProgressBlock) {
+ self.downloadProgressBlock(object);
+ }
+ }
+ else if ([object isEqual:self.uploadProgress]) {
+ if (self.uploadProgressBlock) {
+ self.uploadProgressBlock(object);
+ }
+ }
+}
+
+#pragma mark - NSURLSessionTaskDelegate
+
+- (void)URLSession:(__unused NSURLSession *)session
+ task:(NSURLSessionTask *)task
+didCompleteWithError:(NSError *)error
+{
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wgnu"
+ __strong AFURLSessionManager *manager = self.manager;
+
+ __block id responseObject = nil;
+
+ __block NSMutableDictionary *userInfo = [NSMutableDictionary dictionary];
+ userInfo[AFNetworkingTaskDidCompleteResponseSerializerKey] = manager.responseSerializer;
+
+ //Performance Improvement from #2672
+ NSData *data = nil;
+ if (self.mutableData) {
+ data = [self.mutableData copy];
+ //We no longer need the reference, so nil it out to gain back some memory.
+ self.mutableData = nil;
+ }
+
+ if (self.downloadFileURL) {
+ userInfo[AFNetworkingTaskDidCompleteAssetPathKey] = self.downloadFileURL;
+ } else if (data) {
+ userInfo[AFNetworkingTaskDidCompleteResponseDataKey] = data;
+ }
+
+ if (error) {
+ userInfo[AFNetworkingTaskDidCompleteErrorKey] = error;
+
+ dispatch_group_async(manager.completionGroup ?: url_session_manager_completion_group(), manager.completionQueue ?: dispatch_get_main_queue(), ^{
+ if (self.completionHandler) {
+ self.completionHandler(task.response, responseObject, error);
+ }
+
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidCompleteNotification object:task userInfo:userInfo];
+ });
+ });
+ } else {
+ dispatch_async(url_session_manager_processing_queue(), ^{
+ NSError *serializationError = nil;
+ responseObject = [manager.responseSerializer responseObjectForResponse:task.response data:data error:&serializationError];
+
+ if (self.downloadFileURL) {
+ responseObject = self.downloadFileURL;
+ }
+
+ if (responseObject) {
+ userInfo[AFNetworkingTaskDidCompleteSerializedResponseKey] = responseObject;
+ }
+
+ if (serializationError) {
+ userInfo[AFNetworkingTaskDidCompleteErrorKey] = serializationError;
+ }
+
+ dispatch_group_async(manager.completionGroup ?: url_session_manager_completion_group(), manager.completionQueue ?: dispatch_get_main_queue(), ^{
+ if (self.completionHandler) {
+ self.completionHandler(task.response, responseObject, serializationError);
+ }
+
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidCompleteNotification object:task userInfo:userInfo];
+ });
+ });
+ });
+ }
+#pragma clang diagnostic pop
+}
+
+#pragma mark - NSURLSessionDataTaskDelegate
+
+- (void)URLSession:(__unused NSURLSession *)session
+ dataTask:(__unused NSURLSessionDataTask *)dataTask
+ didReceiveData:(NSData *)data
+{
+ [self.mutableData appendData:data];
+}
+
+#pragma mark - NSURLSessionDownloadTaskDelegate
+
+- (void)URLSession:(NSURLSession *)session
+ downloadTask:(NSURLSessionDownloadTask *)downloadTask
+didFinishDownloadingToURL:(NSURL *)location
+{
+ NSError *fileManagerError = nil;
+ self.downloadFileURL = nil;
+
+ if (self.downloadTaskDidFinishDownloading) {
+ self.downloadFileURL = self.downloadTaskDidFinishDownloading(session, downloadTask, location);
+ if (self.downloadFileURL) {
+ [[NSFileManager defaultManager] moveItemAtURL:location toURL:self.downloadFileURL error:&fileManagerError];
+
+ if (fileManagerError) {
+ [[NSNotificationCenter defaultCenter] postNotificationName:AFURLSessionDownloadTaskDidFailToMoveFileNotification object:downloadTask userInfo:fileManagerError.userInfo];
+ }
+ }
+ }
+}
+
+@end
+
+#pragma mark -
+
+/**
+ * A workaround for issues related to key-value observing the `state` of an `NSURLSessionTask`.
+ *
+ * See:
+ * - https://github.com/AFNetworking/AFNetworking/issues/1477
+ * - https://github.com/AFNetworking/AFNetworking/issues/2638
+ * - https://github.com/AFNetworking/AFNetworking/pull/2702
+ */
+
+static inline void af_swizzleSelector(Class theClass, SEL originalSelector, SEL swizzledSelector) {
+ Method originalMethod = class_getInstanceMethod(theClass, originalSelector);
+ Method swizzledMethod = class_getInstanceMethod(theClass, swizzledSelector);
+ method_exchangeImplementations(originalMethod, swizzledMethod);
+}
+
+static inline BOOL af_addMethod(Class theClass, SEL selector, Method method) {
+ return class_addMethod(theClass, selector, method_getImplementation(method), method_getTypeEncoding(method));
+}
+
+static NSString * const AFNSURLSessionTaskDidResumeNotification = @"com.alamofire.networking.nsurlsessiontask.resume";
+static NSString * const AFNSURLSessionTaskDidSuspendNotification = @"com.alamofire.networking.nsurlsessiontask.suspend";
+
+@interface _AFURLSessionTaskSwizzling : NSObject
+
+@end
+
+@implementation _AFURLSessionTaskSwizzling
+
++ (void)load {
+ /**
+ WARNING: Trouble Ahead
+ https://github.com/AFNetworking/AFNetworking/pull/2702
+ */
+
+ if (NSClassFromString(@"NSURLSessionTask")) {
+ /**
+ iOS 7 and iOS 8 differ in NSURLSessionTask implementation, which makes the next bit of code a bit tricky.
+ Many Unit Tests have been built to validate as much of this behavior has possible.
+ Here is what we know:
+ - NSURLSessionTasks are implemented with class clusters, meaning the class you request from the API isn't actually the type of class you will get back.
+ - Simply referencing `[NSURLSessionTask class]` will not work. You need to ask an `NSURLSession` to actually create an object, and grab the class from there.
+ - On iOS 7, `localDataTask` is a `__NSCFLocalDataTask`, which inherits from `__NSCFLocalSessionTask`, which inherits from `__NSCFURLSessionTask`.
+ - On iOS 8, `localDataTask` is a `__NSCFLocalDataTask`, which inherits from `__NSCFLocalSessionTask`, which inherits from `NSURLSessionTask`.
+ - On iOS 7, `__NSCFLocalSessionTask` and `__NSCFURLSessionTask` are the only two classes that have their own implementations of `resume` and `suspend`, and `__NSCFLocalSessionTask` DOES NOT CALL SUPER. This means both classes need to be swizzled.
+ - On iOS 8, `NSURLSessionTask` is the only class that implements `resume` and `suspend`. This means this is the only class that needs to be swizzled.
+ - Because `NSURLSessionTask` is not involved in the class hierarchy for every version of iOS, its easier to add the swizzled methods to a dummy class and manage them there.
+
+ Some Assumptions:
+ - No implementations of `resume` or `suspend` call super. If this were to change in a future version of iOS, we'd need to handle it.
+ - No background task classes override `resume` or `suspend`
+
+ The current solution:
+ 1) Grab an instance of `__NSCFLocalDataTask` by asking an instance of `NSURLSession` for a data task.
+ 2) Grab a pointer to the original implementation of `af_resume`
+ 3) Check to see if the current class has an implementation of resume. If so, continue to step 4.
+ 4) Grab the super class of the current class.
+ 5) Grab a pointer for the current class to the current implementation of `resume`.
+ 6) Grab a pointer for the super class to the current implementation of `resume`.
+ 7) If the current class implementation of `resume` is not equal to the super class implementation of `resume` AND the current implementation of `resume` is not equal to the original implementation of `af_resume`, THEN swizzle the methods
+ 8) Set the current class to the super class, and repeat steps 3-8
+ */
+ NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration ephemeralSessionConfiguration];
+ NSURLSession * session = [NSURLSession sessionWithConfiguration:configuration];
+#pragma GCC diagnostic push
+#pragma GCC diagnostic ignored "-Wnonnull"
+ NSURLSessionDataTask *localDataTask = [session dataTaskWithURL:nil];
+#pragma clang diagnostic pop
+ IMP originalAFResumeIMP = method_getImplementation(class_getInstanceMethod([self class], @selector(af_resume)));
+ Class currentClass = [localDataTask class];
+
+ while (class_getInstanceMethod(currentClass, @selector(resume))) {
+ Class superClass = [currentClass superclass];
+ IMP classResumeIMP = method_getImplementation(class_getInstanceMethod(currentClass, @selector(resume)));
+ IMP superclassResumeIMP = method_getImplementation(class_getInstanceMethod(superClass, @selector(resume)));
+ if (classResumeIMP != superclassResumeIMP &&
+ originalAFResumeIMP != classResumeIMP) {
+ [self swizzleResumeAndSuspendMethodForClass:currentClass];
+ }
+ currentClass = [currentClass superclass];
+ }
+
+ [localDataTask cancel];
+ [session finishTasksAndInvalidate];
+ }
+}
+
++ (void)swizzleResumeAndSuspendMethodForClass:(Class)theClass {
+ Method afResumeMethod = class_getInstanceMethod(self, @selector(af_resume));
+ Method afSuspendMethod = class_getInstanceMethod(self, @selector(af_suspend));
+
+ if (af_addMethod(theClass, @selector(af_resume), afResumeMethod)) {
+ af_swizzleSelector(theClass, @selector(resume), @selector(af_resume));
+ }
+
+ if (af_addMethod(theClass, @selector(af_suspend), afSuspendMethod)) {
+ af_swizzleSelector(theClass, @selector(suspend), @selector(af_suspend));
+ }
+}
+
+- (NSURLSessionTaskState)state {
+ NSAssert(NO, @"State method should never be called in the actual dummy class");
+ return NSURLSessionTaskStateCanceling;
+}
+
+- (void)af_resume {
+ NSAssert([self respondsToSelector:@selector(state)], @"Does not respond to state");
+ NSURLSessionTaskState state = [self state];
+ [self af_resume];
+
+ if (state != NSURLSessionTaskStateRunning) {
+ [[NSNotificationCenter defaultCenter] postNotificationName:AFNSURLSessionTaskDidResumeNotification object:self];
+ }
+}
+
+- (void)af_suspend {
+ NSAssert([self respondsToSelector:@selector(state)], @"Does not respond to state");
+ NSURLSessionTaskState state = [self state];
+ [self af_suspend];
+
+ if (state != NSURLSessionTaskStateSuspended) {
+ [[NSNotificationCenter defaultCenter] postNotificationName:AFNSURLSessionTaskDidSuspendNotification object:self];
+ }
+}
+@end
+
+#pragma mark -
+
+@interface AFURLSessionManager ()
+@property (readwrite, nonatomic, strong) NSURLSessionConfiguration *sessionConfiguration;
+@property (readwrite, nonatomic, strong) NSOperationQueue *operationQueue;
+@property (readwrite, nonatomic, strong) NSURLSession *session;
+@property (readwrite, nonatomic, strong) NSMutableDictionary *mutableTaskDelegatesKeyedByTaskIdentifier;
+@property (readonly, nonatomic, copy) NSString *taskDescriptionForSessionTasks;
+@property (readwrite, nonatomic, strong) NSLock *lock;
+@property (readwrite, nonatomic, copy) AFURLSessionDidBecomeInvalidBlock sessionDidBecomeInvalid;
+@property (readwrite, nonatomic, copy) AFURLSessionDidReceiveAuthenticationChallengeBlock sessionDidReceiveAuthenticationChallenge;
+@property (readwrite, nonatomic, copy) AFURLSessionDidFinishEventsForBackgroundURLSessionBlock didFinishEventsForBackgroundURLSession;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskWillPerformHTTPRedirectionBlock taskWillPerformHTTPRedirection;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskDidReceiveAuthenticationChallengeBlock taskDidReceiveAuthenticationChallenge;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskNeedNewBodyStreamBlock taskNeedNewBodyStream;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskDidSendBodyDataBlock taskDidSendBodyData;
+@property (readwrite, nonatomic, copy) AFURLSessionTaskDidCompleteBlock taskDidComplete;
+@property (readwrite, nonatomic, copy) AFURLSessionDataTaskDidReceiveResponseBlock dataTaskDidReceiveResponse;
+@property (readwrite, nonatomic, copy) AFURLSessionDataTaskDidBecomeDownloadTaskBlock dataTaskDidBecomeDownloadTask;
+@property (readwrite, nonatomic, copy) AFURLSessionDataTaskDidReceiveDataBlock dataTaskDidReceiveData;
+@property (readwrite, nonatomic, copy) AFURLSessionDataTaskWillCacheResponseBlock dataTaskWillCacheResponse;
+@property (readwrite, nonatomic, copy) AFURLSessionDownloadTaskDidFinishDownloadingBlock downloadTaskDidFinishDownloading;
+@property (readwrite, nonatomic, copy) AFURLSessionDownloadTaskDidWriteDataBlock downloadTaskDidWriteData;
+@property (readwrite, nonatomic, copy) AFURLSessionDownloadTaskDidResumeBlock downloadTaskDidResume;
+@end
+
+@implementation AFURLSessionManager
+
+- (instancetype)init {
+ return [self initWithSessionConfiguration:nil];
+}
+
+- (instancetype)initWithSessionConfiguration:(NSURLSessionConfiguration *)configuration {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+
+ if (!configuration) {
+ configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
+ }
+
+ self.sessionConfiguration = configuration;
+
+ self.operationQueue = [[NSOperationQueue alloc] init];
+ self.operationQueue.maxConcurrentOperationCount = 1;
+
+ self.session = [NSURLSession sessionWithConfiguration:self.sessionConfiguration delegate:self delegateQueue:self.operationQueue];
+
+ self.responseSerializer = [AFJSONResponseSerializer serializer];
+
+ self.securityPolicy = [AFSecurityPolicy defaultPolicy];
+
+#if !TARGET_OS_WATCH
+ self.reachabilityManager = [AFNetworkReachabilityManager sharedManager];
+#endif
+
+ self.mutableTaskDelegatesKeyedByTaskIdentifier = [[NSMutableDictionary alloc] init];
+
+ self.lock = [[NSLock alloc] init];
+ self.lock.name = AFURLSessionManagerLockName;
+
+ [self.session getTasksWithCompletionHandler:^(NSArray *dataTasks, NSArray *uploadTasks, NSArray *downloadTasks) {
+ for (NSURLSessionDataTask *task in dataTasks) {
+ [self addDelegateForDataTask:task uploadProgress:nil downloadProgress:nil completionHandler:nil];
+ }
+
+ for (NSURLSessionUploadTask *uploadTask in uploadTasks) {
+ [self addDelegateForUploadTask:uploadTask progress:nil completionHandler:nil];
+ }
+
+ for (NSURLSessionDownloadTask *downloadTask in downloadTasks) {
+ [self addDelegateForDownloadTask:downloadTask progress:nil destination:nil completionHandler:nil];
+ }
+ }];
+
+ return self;
+}
+
+- (void)dealloc {
+ [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
+#pragma mark -
+
+- (NSString *)taskDescriptionForSessionTasks {
+ return [NSString stringWithFormat:@"%p", self];
+}
+
+- (void)taskDidResume:(NSNotification *)notification {
+ NSURLSessionTask *task = notification.object;
+ if ([task respondsToSelector:@selector(taskDescription)]) {
+ if ([task.taskDescription isEqualToString:self.taskDescriptionForSessionTasks]) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidResumeNotification object:task];
+ });
+ }
+ }
+}
+
+- (void)taskDidSuspend:(NSNotification *)notification {
+ NSURLSessionTask *task = notification.object;
+ if ([task respondsToSelector:@selector(taskDescription)]) {
+ if ([task.taskDescription isEqualToString:self.taskDescriptionForSessionTasks]) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [[NSNotificationCenter defaultCenter] postNotificationName:AFNetworkingTaskDidSuspendNotification object:task];
+ });
+ }
+ }
+}
+
+#pragma mark -
+
+- (AFURLSessionManagerTaskDelegate *)delegateForTask:(NSURLSessionTask *)task {
+ NSParameterAssert(task);
+
+ AFURLSessionManagerTaskDelegate *delegate = nil;
+ [self.lock lock];
+ delegate = self.mutableTaskDelegatesKeyedByTaskIdentifier[@(task.taskIdentifier)];
+ [self.lock unlock];
+
+ return delegate;
+}
+
+- (void)setDelegate:(AFURLSessionManagerTaskDelegate *)delegate
+ forTask:(NSURLSessionTask *)task
+{
+ NSParameterAssert(task);
+ NSParameterAssert(delegate);
+
+ [self.lock lock];
+ self.mutableTaskDelegatesKeyedByTaskIdentifier[@(task.taskIdentifier)] = delegate;
+ [delegate setupProgressForTask:task];
+ [self addNotificationObserverForTask:task];
+ [self.lock unlock];
+}
+
+- (void)addDelegateForDataTask:(NSURLSessionDataTask *)dataTask
+ uploadProgress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ downloadProgress:(nullable void (^)(NSProgress *downloadProgress)) downloadProgressBlock
+ completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+ AFURLSessionManagerTaskDelegate *delegate = [[AFURLSessionManagerTaskDelegate alloc] init];
+ delegate.manager = self;
+ delegate.completionHandler = completionHandler;
+
+ dataTask.taskDescription = self.taskDescriptionForSessionTasks;
+ [self setDelegate:delegate forTask:dataTask];
+
+ delegate.uploadProgressBlock = uploadProgressBlock;
+ delegate.downloadProgressBlock = downloadProgressBlock;
+}
+
+- (void)addDelegateForUploadTask:(NSURLSessionUploadTask *)uploadTask
+ progress:(void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+ AFURLSessionManagerTaskDelegate *delegate = [[AFURLSessionManagerTaskDelegate alloc] init];
+ delegate.manager = self;
+ delegate.completionHandler = completionHandler;
+
+ uploadTask.taskDescription = self.taskDescriptionForSessionTasks;
+
+ [self setDelegate:delegate forTask:uploadTask];
+
+ delegate.uploadProgressBlock = uploadProgressBlock;
+}
+
+- (void)addDelegateForDownloadTask:(NSURLSessionDownloadTask *)downloadTask
+ progress:(void (^)(NSProgress *downloadProgress)) downloadProgressBlock
+ destination:(NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+ completionHandler:(void (^)(NSURLResponse *response, NSURL *filePath, NSError *error))completionHandler
+{
+ AFURLSessionManagerTaskDelegate *delegate = [[AFURLSessionManagerTaskDelegate alloc] init];
+ delegate.manager = self;
+ delegate.completionHandler = completionHandler;
+
+ if (destination) {
+ delegate.downloadTaskDidFinishDownloading = ^NSURL * (NSURLSession * __unused session, NSURLSessionDownloadTask *task, NSURL *location) {
+ return destination(location, task.response);
+ };
+ }
+
+ downloadTask.taskDescription = self.taskDescriptionForSessionTasks;
+
+ [self setDelegate:delegate forTask:downloadTask];
+
+ delegate.downloadProgressBlock = downloadProgressBlock;
+}
+
+- (void)removeDelegateForTask:(NSURLSessionTask *)task {
+ NSParameterAssert(task);
+
+ AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:task];
+ [self.lock lock];
+ [delegate cleanUpProgressForTask:task];
+ [self removeNotificationObserverForTask:task];
+ [self.mutableTaskDelegatesKeyedByTaskIdentifier removeObjectForKey:@(task.taskIdentifier)];
+ [self.lock unlock];
+}
+
+#pragma mark -
+
+- (NSArray *)tasksForKeyPath:(NSString *)keyPath {
+ __block NSArray *tasks = nil;
+ dispatch_semaphore_t semaphore = dispatch_semaphore_create(0);
+ [self.session getTasksWithCompletionHandler:^(NSArray *dataTasks, NSArray *uploadTasks, NSArray *downloadTasks) {
+ if ([keyPath isEqualToString:NSStringFromSelector(@selector(dataTasks))]) {
+ tasks = dataTasks;
+ } else if ([keyPath isEqualToString:NSStringFromSelector(@selector(uploadTasks))]) {
+ tasks = uploadTasks;
+ } else if ([keyPath isEqualToString:NSStringFromSelector(@selector(downloadTasks))]) {
+ tasks = downloadTasks;
+ } else if ([keyPath isEqualToString:NSStringFromSelector(@selector(tasks))]) {
+ tasks = [@[dataTasks, uploadTasks, downloadTasks] valueForKeyPath:@"@unionOfArrays.self"];
+ }
+
+ dispatch_semaphore_signal(semaphore);
+ }];
+
+ dispatch_semaphore_wait(semaphore, DISPATCH_TIME_FOREVER);
+
+ return tasks;
+}
+
+- (NSArray *)tasks {
+ return [self tasksForKeyPath:NSStringFromSelector(_cmd)];
+}
+
+- (NSArray *)dataTasks {
+ return [self tasksForKeyPath:NSStringFromSelector(_cmd)];
+}
+
+- (NSArray *)uploadTasks {
+ return [self tasksForKeyPath:NSStringFromSelector(_cmd)];
+}
+
+- (NSArray *)downloadTasks {
+ return [self tasksForKeyPath:NSStringFromSelector(_cmd)];
+}
+
+#pragma mark -
+
+- (void)invalidateSessionCancelingTasks:(BOOL)cancelPendingTasks {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ if (cancelPendingTasks) {
+ [self.session invalidateAndCancel];
+ } else {
+ [self.session finishTasksAndInvalidate];
+ }
+ });
+}
+
+#pragma mark -
+
+- (void)setResponseSerializer:(id <AFURLResponseSerialization>)responseSerializer {
+ NSParameterAssert(responseSerializer);
+
+ _responseSerializer = responseSerializer;
+}
+
+#pragma mark -
+- (void)addNotificationObserverForTask:(NSURLSessionTask *)task {
+ [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(taskDidResume:) name:AFNSURLSessionTaskDidResumeNotification object:task];
+ [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(taskDidSuspend:) name:AFNSURLSessionTaskDidSuspendNotification object:task];
+}
+
+- (void)removeNotificationObserverForTask:(NSURLSessionTask *)task {
+ [[NSNotificationCenter defaultCenter] removeObserver:self name:AFNSURLSessionTaskDidResumeNotification object:task];
+ [[NSNotificationCenter defaultCenter] removeObserver:self name:AFNSURLSessionTaskDidResumeNotification object:task];
+}
+
+#pragma mark -
+
+- (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request
+ completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+ return [self dataTaskWithRequest:request uploadProgress:nil downloadProgress:nil completionHandler:completionHandler];
+}
+
+- (NSURLSessionDataTask *)dataTaskWithRequest:(NSURLRequest *)request
+ uploadProgress:(nullable void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ downloadProgress:(nullable void (^)(NSProgress *downloadProgress)) downloadProgressBlock
+ completionHandler:(nullable void (^)(NSURLResponse *response, id _Nullable responseObject, NSError * _Nullable error))completionHandler {
+
+ __block NSURLSessionDataTask *dataTask = nil;
+ url_session_manager_create_task_safely(^{
+ dataTask = [self.session dataTaskWithRequest:request];
+ });
+
+ [self addDelegateForDataTask:dataTask uploadProgress:uploadProgressBlock downloadProgress:downloadProgressBlock completionHandler:completionHandler];
+
+ return dataTask;
+}
+
+#pragma mark -
+
+- (NSURLSessionUploadTask *)uploadTaskWithRequest:(NSURLRequest *)request
+ fromFile:(NSURL *)fileURL
+ progress:(void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+ __block NSURLSessionUploadTask *uploadTask = nil;
+ url_session_manager_create_task_safely(^{
+ uploadTask = [self.session uploadTaskWithRequest:request fromFile:fileURL];
+ });
+
+ if (!uploadTask && self.attemptsToRecreateUploadTasksForBackgroundSessions && self.session.configuration.identifier) {
+ for (NSUInteger attempts = 0; !uploadTask && attempts < AFMaximumNumberOfAttemptsToRecreateBackgroundSessionUploadTask; attempts++) {
+ uploadTask = [self.session uploadTaskWithRequest:request fromFile:fileURL];
+ }
+ }
+
+ [self addDelegateForUploadTask:uploadTask progress:uploadProgressBlock completionHandler:completionHandler];
+
+ return uploadTask;
+}
+
+- (NSURLSessionUploadTask *)uploadTaskWithRequest:(NSURLRequest *)request
+ fromData:(NSData *)bodyData
+ progress:(void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+ __block NSURLSessionUploadTask *uploadTask = nil;
+ url_session_manager_create_task_safely(^{
+ uploadTask = [self.session uploadTaskWithRequest:request fromData:bodyData];
+ });
+
+ [self addDelegateForUploadTask:uploadTask progress:uploadProgressBlock completionHandler:completionHandler];
+
+ return uploadTask;
+}
+
+- (NSURLSessionUploadTask *)uploadTaskWithStreamedRequest:(NSURLRequest *)request
+ progress:(void (^)(NSProgress *uploadProgress)) uploadProgressBlock
+ completionHandler:(void (^)(NSURLResponse *response, id responseObject, NSError *error))completionHandler
+{
+ __block NSURLSessionUploadTask *uploadTask = nil;
+ url_session_manager_create_task_safely(^{
+ uploadTask = [self.session uploadTaskWithStreamedRequest:request];
+ });
+
+ [self addDelegateForUploadTask:uploadTask progress:uploadProgressBlock completionHandler:completionHandler];
+
+ return uploadTask;
+}
+
+#pragma mark -
+
+- (NSURLSessionDownloadTask *)downloadTaskWithRequest:(NSURLRequest *)request
+ progress:(void (^)(NSProgress *downloadProgress)) downloadProgressBlock
+ destination:(NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+ completionHandler:(void (^)(NSURLResponse *response, NSURL *filePath, NSError *error))completionHandler
+{
+ __block NSURLSessionDownloadTask *downloadTask = nil;
+ url_session_manager_create_task_safely(^{
+ downloadTask = [self.session downloadTaskWithRequest:request];
+ });
+
+ [self addDelegateForDownloadTask:downloadTask progress:downloadProgressBlock destination:destination completionHandler:completionHandler];
+
+ return downloadTask;
+}
+
+- (NSURLSessionDownloadTask *)downloadTaskWithResumeData:(NSData *)resumeData
+ progress:(void (^)(NSProgress *downloadProgress)) downloadProgressBlock
+ destination:(NSURL * (^)(NSURL *targetPath, NSURLResponse *response))destination
+ completionHandler:(void (^)(NSURLResponse *response, NSURL *filePath, NSError *error))completionHandler
+{
+ __block NSURLSessionDownloadTask *downloadTask = nil;
+ url_session_manager_create_task_safely(^{
+ downloadTask = [self.session downloadTaskWithResumeData:resumeData];
+ });
+
+ [self addDelegateForDownloadTask:downloadTask progress:downloadProgressBlock destination:destination completionHandler:completionHandler];
+
+ return downloadTask;
+}
+
+#pragma mark -
+- (NSProgress *)uploadProgressForTask:(NSURLSessionTask *)task {
+ return [[self delegateForTask:task] uploadProgress];
+}
+
+- (NSProgress *)downloadProgressForTask:(NSURLSessionTask *)task {
+ return [[self delegateForTask:task] downloadProgress];
+}
+
+#pragma mark -
+
+- (void)setSessionDidBecomeInvalidBlock:(void (^)(NSURLSession *session, NSError *error))block {
+ self.sessionDidBecomeInvalid = block;
+}
+
+- (void)setSessionDidReceiveAuthenticationChallengeBlock:(NSURLSessionAuthChallengeDisposition (^)(NSURLSession *session, NSURLAuthenticationChallenge *challenge, NSURLCredential * __autoreleasing *credential))block {
+ self.sessionDidReceiveAuthenticationChallenge = block;
+}
+
+- (void)setDidFinishEventsForBackgroundURLSessionBlock:(void (^)(NSURLSession *session))block {
+ self.didFinishEventsForBackgroundURLSession = block;
+}
+
+#pragma mark -
+
+- (void)setTaskNeedNewBodyStreamBlock:(NSInputStream * (^)(NSURLSession *session, NSURLSessionTask *task))block {
+ self.taskNeedNewBodyStream = block;
+}
+
+- (void)setTaskWillPerformHTTPRedirectionBlock:(NSURLRequest * (^)(NSURLSession *session, NSURLSessionTask *task, NSURLResponse *response, NSURLRequest *request))block {
+ self.taskWillPerformHTTPRedirection = block;
+}
+
+- (void)setTaskDidReceiveAuthenticationChallengeBlock:(NSURLSessionAuthChallengeDisposition (^)(NSURLSession *session, NSURLSessionTask *task, NSURLAuthenticationChallenge *challenge, NSURLCredential * __autoreleasing *credential))block {
+ self.taskDidReceiveAuthenticationChallenge = block;
+}
+
+- (void)setTaskDidSendBodyDataBlock:(void (^)(NSURLSession *session, NSURLSessionTask *task, int64_t bytesSent, int64_t totalBytesSent, int64_t totalBytesExpectedToSend))block {
+ self.taskDidSendBodyData = block;
+}
+
+- (void)setTaskDidCompleteBlock:(void (^)(NSURLSession *session, NSURLSessionTask *task, NSError *error))block {
+ self.taskDidComplete = block;
+}
+
+#pragma mark -
+
+- (void)setDataTaskDidReceiveResponseBlock:(NSURLSessionResponseDisposition (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLResponse *response))block {
+ self.dataTaskDidReceiveResponse = block;
+}
+
+- (void)setDataTaskDidBecomeDownloadTaskBlock:(void (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSURLSessionDownloadTask *downloadTask))block {
+ self.dataTaskDidBecomeDownloadTask = block;
+}
+
+- (void)setDataTaskDidReceiveDataBlock:(void (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSData *data))block {
+ self.dataTaskDidReceiveData = block;
+}
+
+- (void)setDataTaskWillCacheResponseBlock:(NSCachedURLResponse * (^)(NSURLSession *session, NSURLSessionDataTask *dataTask, NSCachedURLResponse *proposedResponse))block {
+ self.dataTaskWillCacheResponse = block;
+}
+
+#pragma mark -
+
+- (void)setDownloadTaskDidFinishDownloadingBlock:(NSURL * (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, NSURL *location))block {
+ self.downloadTaskDidFinishDownloading = block;
+}
+
+- (void)setDownloadTaskDidWriteDataBlock:(void (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t bytesWritten, int64_t totalBytesWritten, int64_t totalBytesExpectedToWrite))block {
+ self.downloadTaskDidWriteData = block;
+}
+
+- (void)setDownloadTaskDidResumeBlock:(void (^)(NSURLSession *session, NSURLSessionDownloadTask *downloadTask, int64_t fileOffset, int64_t expectedTotalBytes))block {
+ self.downloadTaskDidResume = block;
+}
+
+#pragma mark - NSObject
+
+- (NSString *)description {
+ return [NSString stringWithFormat:@"<%@: %p, session: %@, operationQueue: %@>", NSStringFromClass([self class]), self, self.session, self.operationQueue];
+}
+
+- (BOOL)respondsToSelector:(SEL)selector {
+ if (selector == @selector(URLSession:task:willPerformHTTPRedirection:newRequest:completionHandler:)) {
+ return self.taskWillPerformHTTPRedirection != nil;
+ } else if (selector == @selector(URLSession:dataTask:didReceiveResponse:completionHandler:)) {
+ return self.dataTaskDidReceiveResponse != nil;
+ } else if (selector == @selector(URLSession:dataTask:willCacheResponse:completionHandler:)) {
+ return self.dataTaskWillCacheResponse != nil;
+ } else if (selector == @selector(URLSessionDidFinishEventsForBackgroundURLSession:)) {
+ return self.didFinishEventsForBackgroundURLSession != nil;
+ }
+
+ return [[self class] instancesRespondToSelector:selector];
+}
+
+#pragma mark - NSURLSessionDelegate
+
+- (void)URLSession:(NSURLSession *)session
+didBecomeInvalidWithError:(NSError *)error
+{
+ if (self.sessionDidBecomeInvalid) {
+ self.sessionDidBecomeInvalid(session, error);
+ }
+
+ [[NSNotificationCenter defaultCenter] postNotificationName:AFURLSessionDidInvalidateNotification object:session];
+}
+
+- (void)URLSession:(NSURLSession *)session
+didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
+ completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler
+{
+ NSURLSessionAuthChallengeDisposition disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+ __block NSURLCredential *credential = nil;
+
+ if (self.sessionDidReceiveAuthenticationChallenge) {
+ disposition = self.sessionDidReceiveAuthenticationChallenge(session, challenge, &credential);
+ } else {
+ if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
+ if ([self.securityPolicy evaluateServerTrust:challenge.protectionSpace.serverTrust forDomain:challenge.protectionSpace.host]) {
+ credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
+ if (credential) {
+ disposition = NSURLSessionAuthChallengeUseCredential;
+ } else {
+ disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+ }
+ } else {
+ disposition = NSURLSessionAuthChallengeRejectProtectionSpace;
+ }
+ } else {
+ disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+ }
+ }
+
+ if (completionHandler) {
+ completionHandler(disposition, credential);
+ }
+}
+
+#pragma mark - NSURLSessionTaskDelegate
+
+- (void)URLSession:(NSURLSession *)session
+ task:(NSURLSessionTask *)task
+willPerformHTTPRedirection:(NSHTTPURLResponse *)response
+ newRequest:(NSURLRequest *)request
+ completionHandler:(void (^)(NSURLRequest *))completionHandler
+{
+ NSURLRequest *redirectRequest = request;
+
+ if (self.taskWillPerformHTTPRedirection) {
+ redirectRequest = self.taskWillPerformHTTPRedirection(session, task, response, request);
+ }
+
+ if (completionHandler) {
+ completionHandler(redirectRequest);
+ }
+}
+
+- (void)URLSession:(NSURLSession *)session
+ task:(NSURLSessionTask *)task
+didReceiveChallenge:(NSURLAuthenticationChallenge *)challenge
+ completionHandler:(void (^)(NSURLSessionAuthChallengeDisposition disposition, NSURLCredential *credential))completionHandler
+{
+ NSURLSessionAuthChallengeDisposition disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+ __block NSURLCredential *credential = nil;
+
+ if (self.taskDidReceiveAuthenticationChallenge) {
+ disposition = self.taskDidReceiveAuthenticationChallenge(session, task, challenge, &credential);
+ } else {
+ if ([challenge.protectionSpace.authenticationMethod isEqualToString:NSURLAuthenticationMethodServerTrust]) {
+ if ([self.securityPolicy evaluateServerTrust:challenge.protectionSpace.serverTrust forDomain:challenge.protectionSpace.host]) {
+ disposition = NSURLSessionAuthChallengeUseCredential;
+ credential = [NSURLCredential credentialForTrust:challenge.protectionSpace.serverTrust];
+ } else {
+ disposition = NSURLSessionAuthChallengeRejectProtectionSpace;
+ }
+ } else {
+ disposition = NSURLSessionAuthChallengePerformDefaultHandling;
+ }
+ }
+
+ if (completionHandler) {
+ completionHandler(disposition, credential);
+ }
+}
+
+- (void)URLSession:(NSURLSession *)session
+ task:(NSURLSessionTask *)task
+ needNewBodyStream:(void (^)(NSInputStream *bodyStream))completionHandler
+{
+ NSInputStream *inputStream = nil;
+
+ if (self.taskNeedNewBodyStream) {
+ inputStream = self.taskNeedNewBodyStream(session, task);
+ } else if (task.originalRequest.HTTPBodyStream && [task.originalRequest.HTTPBodyStream conformsToProtocol:@protocol(NSCopying)]) {
+ inputStream = [task.originalRequest.HTTPBodyStream copy];
+ }
+
+ if (completionHandler) {
+ completionHandler(inputStream);
+ }
+}
+
+- (void)URLSession:(NSURLSession *)session
+ task:(NSURLSessionTask *)task
+ didSendBodyData:(int64_t)bytesSent
+ totalBytesSent:(int64_t)totalBytesSent
+totalBytesExpectedToSend:(int64_t)totalBytesExpectedToSend
+{
+
+ int64_t totalUnitCount = totalBytesExpectedToSend;
+ if(totalUnitCount == NSURLSessionTransferSizeUnknown) {
+ NSString *contentLength = [task.originalRequest valueForHTTPHeaderField:@"Content-Length"];
+ if(contentLength) {
+ totalUnitCount = (int64_t) [contentLength longLongValue];
+ }
+ }
+
+ if (self.taskDidSendBodyData) {
+ self.taskDidSendBodyData(session, task, bytesSent, totalBytesSent, totalUnitCount);
+ }
+}
+
+- (void)URLSession:(NSURLSession *)session
+ task:(NSURLSessionTask *)task
+didCompleteWithError:(NSError *)error
+{
+ AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:task];
+
+ // delegate may be nil when completing a task in the background
+ if (delegate) {
+ [delegate URLSession:session task:task didCompleteWithError:error];
+
+ [self removeDelegateForTask:task];
+ }
+
+ if (self.taskDidComplete) {
+ self.taskDidComplete(session, task, error);
+ }
+}
+
+#pragma mark - NSURLSessionDataDelegate
+
+- (void)URLSession:(NSURLSession *)session
+ dataTask:(NSURLSessionDataTask *)dataTask
+didReceiveResponse:(NSURLResponse *)response
+ completionHandler:(void (^)(NSURLSessionResponseDisposition disposition))completionHandler
+{
+ NSURLSessionResponseDisposition disposition = NSURLSessionResponseAllow;
+
+ if (self.dataTaskDidReceiveResponse) {
+ disposition = self.dataTaskDidReceiveResponse(session, dataTask, response);
+ }
+
+ if (completionHandler) {
+ completionHandler(disposition);
+ }
+}
+
+- (void)URLSession:(NSURLSession *)session
+ dataTask:(NSURLSessionDataTask *)dataTask
+didBecomeDownloadTask:(NSURLSessionDownloadTask *)downloadTask
+{
+ AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:dataTask];
+ if (delegate) {
+ [self removeDelegateForTask:dataTask];
+ [self setDelegate:delegate forTask:downloadTask];
+ }
+
+ if (self.dataTaskDidBecomeDownloadTask) {
+ self.dataTaskDidBecomeDownloadTask(session, dataTask, downloadTask);
+ }
+}
+
+- (void)URLSession:(NSURLSession *)session
+ dataTask:(NSURLSessionDataTask *)dataTask
+ didReceiveData:(NSData *)data
+{
+
+ AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:dataTask];
+ [delegate URLSession:session dataTask:dataTask didReceiveData:data];
+
+ if (self.dataTaskDidReceiveData) {
+ self.dataTaskDidReceiveData(session, dataTask, data);
+ }
+}
+
+- (void)URLSession:(NSURLSession *)session
+ dataTask:(NSURLSessionDataTask *)dataTask
+ willCacheResponse:(NSCachedURLResponse *)proposedResponse
+ completionHandler:(void (^)(NSCachedURLResponse *cachedResponse))completionHandler
+{
+ NSCachedURLResponse *cachedResponse = proposedResponse;
+
+ if (self.dataTaskWillCacheResponse) {
+ cachedResponse = self.dataTaskWillCacheResponse(session, dataTask, proposedResponse);
+ }
+
+ if (completionHandler) {
+ completionHandler(cachedResponse);
+ }
+}
+
+- (void)URLSessionDidFinishEventsForBackgroundURLSession:(NSURLSession *)session {
+ if (self.didFinishEventsForBackgroundURLSession) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ self.didFinishEventsForBackgroundURLSession(session);
+ });
+ }
+}
+
+#pragma mark - NSURLSessionDownloadDelegate
+
+- (void)URLSession:(NSURLSession *)session
+ downloadTask:(NSURLSessionDownloadTask *)downloadTask
+didFinishDownloadingToURL:(NSURL *)location
+{
+ AFURLSessionManagerTaskDelegate *delegate = [self delegateForTask:downloadTask];
+ if (self.downloadTaskDidFinishDownloading) {
+ NSURL *fileURL = self.downloadTaskDidFinishDownloading(session, downloadTask, location);
+ if (fileURL) {
+ delegate.downloadFileURL = fileURL;
+ NSError *error = nil;
+ [[NSFileManager defaultManager] moveItemAtURL:location toURL:fileURL error:&error];
+ if (error) {
+ [[NSNotificationCenter defaultCenter] postNotificationName:AFURLSessionDownloadTaskDidFailToMoveFileNotification object:downloadTask userInfo:error.userInfo];
+ }
+
+ return;
+ }
+ }
+
+ if (delegate) {
+ [delegate URLSession:session downloadTask:downloadTask didFinishDownloadingToURL:location];
+ }
+}
+
+- (void)URLSession:(NSURLSession *)session
+ downloadTask:(NSURLSessionDownloadTask *)downloadTask
+ didWriteData:(int64_t)bytesWritten
+ totalBytesWritten:(int64_t)totalBytesWritten
+totalBytesExpectedToWrite:(int64_t)totalBytesExpectedToWrite
+{
+ if (self.downloadTaskDidWriteData) {
+ self.downloadTaskDidWriteData(session, downloadTask, bytesWritten, totalBytesWritten, totalBytesExpectedToWrite);
+ }
+}
+
+- (void)URLSession:(NSURLSession *)session
+ downloadTask:(NSURLSessionDownloadTask *)downloadTask
+ didResumeAtOffset:(int64_t)fileOffset
+expectedTotalBytes:(int64_t)expectedTotalBytes
+{
+ if (self.downloadTaskDidResume) {
+ self.downloadTaskDidResume(session, downloadTask, fileOffset, expectedTotalBytes);
+ }
+}
+
+#pragma mark - NSSecureCoding
+
++ (BOOL)supportsSecureCoding {
+ return YES;
+}
+
+- (instancetype)initWithCoder:(NSCoder *)decoder {
+ NSURLSessionConfiguration *configuration = [decoder decodeObjectOfClass:[NSURLSessionConfiguration class] forKey:@"sessionConfiguration"];
+
+ self = [self initWithSessionConfiguration:configuration];
+ if (!self) {
+ return nil;
+ }
+
+ return self;
+}
+
+- (void)encodeWithCoder:(NSCoder *)coder {
+ [coder encodeObject:self.session.configuration forKey:@"sessionConfiguration"];
+}
+
+#pragma mark - NSCopying
+
+- (instancetype)copyWithZone:(NSZone *)zone {
+ return [[[self class] allocWithZone:zone] initWithSessionConfiguration:self.session.configuration];
+}
+
+@end
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFAutoPurgingImageCache.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFAutoPurgingImageCache.h
new file mode 100755
index 0000000..9bdc15c
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFAutoPurgingImageCache.h
@@ -0,0 +1,149 @@
+// AFAutoPurgingImageCache.h
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <TargetConditionals.h>
+#import <Foundation/Foundation.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ The `AFImageCache` protocol defines a set of APIs for adding, removing and fetching images from a cache synchronously.
+ */
+@protocol AFImageCache <NSObject>
+
+/**
+ Adds the image to the cache with the given identifier.
+
+ @param image The image to cache.
+ @param identifier The unique identifier for the image in the cache.
+ */
+- (void)addImage:(UIImage *)image withIdentifier:(NSString *)identifier;
+
+/**
+ Removes the image from the cache matching the given identifier.
+
+ @param identifier The unique identifier for the image in the cache.
+
+ @return A BOOL indicating whether or not the image was removed from the cache.
+ */
+- (BOOL)removeImageWithIdentifier:(NSString *)identifier;
+
+/**
+ Removes all images from the cache.
+
+ @return A BOOL indicating whether or not all images were removed from the cache.
+ */
+- (BOOL)removeAllImages;
+
+/**
+ Returns the image in the cache associated with the given identifier.
+
+ @param identifier The unique identifier for the image in the cache.
+
+ @return An image for the matching identifier, or nil.
+ */
+- (nullable UIImage *)imageWithIdentifier:(NSString *)identifier;
+@end
+
+
+/**
+ The `ImageRequestCache` protocol extends the `ImageCache` protocol by adding methods for adding, removing and fetching images from a cache given an `NSURLRequest` and additional identifier.
+ */
+@protocol AFImageRequestCache <AFImageCache>
+
+/**
+ Adds the image to the cache using an identifier created from the request and additional identifier.
+
+ @param image The image to cache.
+ @param request The unique URL request identifing the image asset.
+ @param identifier The additional identifier to apply to the URL request to identify the image.
+ */
+- (void)addImage:(UIImage *)image forRequest:(NSURLRequest *)request withAdditionalIdentifier:(nullable NSString *)identifier;
+
+/**
+ Removes the image from the cache using an identifier created from the request and additional identifier.
+
+ @param request The unique URL request identifing the image asset.
+ @param identifier The additional identifier to apply to the URL request to identify the image.
+
+ @return A BOOL indicating whether or not all images were removed from the cache.
+ */
+- (BOOL)removeImageforRequest:(NSURLRequest *)request withAdditionalIdentifier:(nullable NSString *)identifier;
+
+/**
+ Returns the image from the cache associated with an identifier created from the request and additional identifier.
+
+ @param request The unique URL request identifing the image asset.
+ @param identifier The additional identifier to apply to the URL request to identify the image.
+
+ @return An image for the matching request and identifier, or nil.
+ */
+- (nullable UIImage *)imageforRequest:(NSURLRequest *)request withAdditionalIdentifier:(nullable NSString *)identifier;
+
+@end
+
+/**
+ The `AutoPurgingImageCache` in an in-memory image cache used to store images up to a given memory capacity. When the memory capacity is reached, the image cache is sorted by last access date, then the oldest image is continuously purged until the preferred memory usage after purge is met. Each time an image is accessed through the cache, the internal access date of the image is updated.
+ */
+@interface AFAutoPurgingImageCache : NSObject <AFImageRequestCache>
+
+/**
+ The total memory capacity of the cache in bytes.
+ */
+@property (nonatomic, assign) UInt64 memoryCapacity;
+
+/**
+ The preferred memory usage after purge in bytes. During a purge, images will be purged until the memory capacity drops below this limit.
+ */
+@property (nonatomic, assign) UInt64 preferredMemoryUsageAfterPurge;
+
+/**
+ The current total memory usage in bytes of all images stored within the cache.
+ */
+@property (nonatomic, assign, readonly) UInt64 memoryUsage;
+
+/**
+ Initialies the `AutoPurgingImageCache` instance with default values for memory capacity and preferred memory usage after purge limit. `memoryCapcity` defaults to `100 MB`. `preferredMemoryUsageAfterPurge` defaults to `60 MB`.
+
+ @return The new `AutoPurgingImageCache` instance.
+ */
+- (instancetype)init;
+
+/**
+ Initialies the `AutoPurgingImageCache` instance with the given memory capacity and preferred memory usage
+ after purge limit.
+
+ @param memoryCapacity The total memory capacity of the cache in bytes.
+ @param preferredMemoryCapacity The preferred memory usage after purge in bytes.
+
+ @return The new `AutoPurgingImageCache` instance.
+ */
+- (instancetype)initWithMemoryCapacity:(UInt64)memoryCapacity preferredMemoryCapacity:(UInt64)preferredMemoryCapacity;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
+
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFAutoPurgingImageCache.m b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFAutoPurgingImageCache.m
new file mode 100755
index 0000000..1f40715
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFAutoPurgingImageCache.m
@@ -0,0 +1,201 @@
+// AFAutoPurgingImageCache.m
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import "AFAutoPurgingImageCache.h"
+
+@interface AFCachedImage : NSObject
+
+@property (nonatomic, strong) UIImage *image;
+@property (nonatomic, strong) NSString *identifier;
+@property (nonatomic, assign) UInt64 totalBytes;
+@property (nonatomic, strong) NSDate *lastAccessDate;
+@property (nonatomic, assign) UInt64 currentMemoryUsage;
+
+@end
+
+@implementation AFCachedImage
+
+-(instancetype)initWithImage:(UIImage *)image identifier:(NSString *)identifier {
+ if (self = [self init]) {
+ self.image = image;
+ self.identifier = identifier;
+
+ CGSize imageSize = CGSizeMake(image.size.width * image.scale, image.size.height * image.scale);
+ CGFloat bytesPerPixel = 4.0;
+ CGFloat bytesPerSize = imageSize.width * imageSize.height;
+ self.totalBytes = (UInt64)bytesPerPixel * (UInt64)bytesPerSize;
+ self.lastAccessDate = [NSDate date];
+ }
+ return self;
+}
+
+- (UIImage*)accessImage {
+ self.lastAccessDate = [NSDate date];
+ return self.image;
+}
+
+- (NSString *)description {
+ NSString *descriptionString = [NSString stringWithFormat:@"Idenfitier: %@ lastAccessDate: %@ ", self.identifier, self.lastAccessDate];
+ return descriptionString;
+
+}
+
+@end
+
+@interface AFAutoPurgingImageCache ()
+@property (nonatomic, strong) NSMutableDictionary <NSString* , AFCachedImage*> *cachedImages;
+@property (nonatomic, assign) UInt64 currentMemoryUsage;
+@property (nonatomic, strong) dispatch_queue_t synchronizationQueue;
+@end
+
+@implementation AFAutoPurgingImageCache
+
+- (instancetype)init {
+ return [self initWithMemoryCapacity:100 * 1024 * 1024 preferredMemoryCapacity:60 * 1024 * 1024];
+}
+
+- (instancetype)initWithMemoryCapacity:(UInt64)memoryCapacity preferredMemoryCapacity:(UInt64)preferredMemoryCapacity {
+ if (self = [super init]) {
+ self.memoryCapacity = memoryCapacity;
+ self.preferredMemoryUsageAfterPurge = preferredMemoryCapacity;
+ self.cachedImages = [[NSMutableDictionary alloc] init];
+
+ NSString *queueName = [NSString stringWithFormat:@"com.alamofire.autopurgingimagecache-%@", [[NSUUID UUID] UUIDString]];
+ self.synchronizationQueue = dispatch_queue_create([queueName cStringUsingEncoding:NSASCIIStringEncoding], DISPATCH_QUEUE_CONCURRENT);
+
+ [[NSNotificationCenter defaultCenter]
+ addObserver:self
+ selector:@selector(removeAllImages)
+ name:UIApplicationDidReceiveMemoryWarningNotification
+ object:nil];
+
+ }
+ return self;
+}
+
+- (void)dealloc {
+ [[NSNotificationCenter defaultCenter] removeObserver:self];
+}
+
+- (UInt64)memoryUsage {
+ __block UInt64 result = 0;
+ dispatch_sync(self.synchronizationQueue, ^{
+ result = self.currentMemoryUsage;
+ });
+ return result;
+}
+
+- (void)addImage:(UIImage *)image withIdentifier:(NSString *)identifier {
+ dispatch_barrier_async(self.synchronizationQueue, ^{
+ AFCachedImage *cacheImage = [[AFCachedImage alloc] initWithImage:image identifier:identifier];
+
+ AFCachedImage *previousCachedImage = self.cachedImages[identifier];
+ if (previousCachedImage != nil) {
+ self.currentMemoryUsage -= previousCachedImage.totalBytes;
+ }
+
+ self.cachedImages[identifier] = cacheImage;
+ self.currentMemoryUsage += cacheImage.totalBytes;
+ });
+
+ dispatch_barrier_async(self.synchronizationQueue, ^{
+ if (self.currentMemoryUsage > self.memoryCapacity) {
+ UInt64 bytesToPurge = self.currentMemoryUsage - self.preferredMemoryUsageAfterPurge;
+ NSMutableArray <AFCachedImage*> *sortedImages = [NSMutableArray arrayWithArray:self.cachedImages.allValues];
+ NSSortDescriptor *sortDescriptor = [[NSSortDescriptor alloc] initWithKey:@"lastAccessDate"
+ ascending:YES];
+ [sortedImages sortUsingDescriptors:@[sortDescriptor]];
+
+ UInt64 bytesPurged = 0;
+
+ for (AFCachedImage *cachedImage in sortedImages) {
+ [self.cachedImages removeObjectForKey:cachedImage.identifier];
+ bytesPurged += cachedImage.totalBytes;
+ if (bytesPurged >= bytesToPurge) {
+ break ;
+ }
+ }
+ self.currentMemoryUsage -= bytesPurged;
+ }
+ });
+}
+
+- (BOOL)removeImageWithIdentifier:(NSString *)identifier {
+ __block BOOL removed = NO;
+ dispatch_barrier_sync(self.synchronizationQueue, ^{
+ AFCachedImage *cachedImage = self.cachedImages[identifier];
+ if (cachedImage != nil) {
+ [self.cachedImages removeObjectForKey:identifier];
+ self.currentMemoryUsage -= cachedImage.totalBytes;
+ removed = YES;
+ }
+ });
+ return removed;
+}
+
+- (BOOL)removeAllImages {
+ __block BOOL removed = NO;
+ dispatch_barrier_sync(self.synchronizationQueue, ^{
+ if (self.cachedImages.count > 0) {
+ [self.cachedImages removeAllObjects];
+ self.currentMemoryUsage = 0;
+ removed = YES;
+ }
+ });
+ return removed;
+}
+
+- (nullable UIImage *)imageWithIdentifier:(NSString *)identifier {
+ __block UIImage *image = nil;
+ dispatch_sync(self.synchronizationQueue, ^{
+ AFCachedImage *cachedImage = self.cachedImages[identifier];
+ image = [cachedImage accessImage];
+ });
+ return image;
+}
+
+- (void)addImage:(UIImage *)image forRequest:(NSURLRequest *)request withAdditionalIdentifier:(NSString *)identifier {
+ [self addImage:image withIdentifier:[self imageCacheKeyFromURLRequest:request withAdditionalIdentifier:identifier]];
+}
+
+- (BOOL)removeImageforRequest:(NSURLRequest *)request withAdditionalIdentifier:(NSString *)identifier {
+ return [self removeImageWithIdentifier:[self imageCacheKeyFromURLRequest:request withAdditionalIdentifier:identifier]];
+}
+
+- (nullable UIImage *)imageforRequest:(NSURLRequest *)request withAdditionalIdentifier:(NSString *)identifier {
+ return [self imageWithIdentifier:[self imageCacheKeyFromURLRequest:request withAdditionalIdentifier:identifier]];
+}
+
+- (NSString *)imageCacheKeyFromURLRequest:(NSURLRequest *)request withAdditionalIdentifier:(NSString *)additionalIdentifier {
+ NSString *key = request.URL.absoluteString;
+ if (additionalIdentifier != nil) {
+ key = [key stringByAppendingString:additionalIdentifier];
+ }
+ return key;
+}
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFImageDownloader.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFImageDownloader.h
new file mode 100755
index 0000000..3903eec
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFImageDownloader.h
@@ -0,0 +1,157 @@
+// AFImageDownloader.h
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import <Foundation/Foundation.h>
+#import "AFAutoPurgingImageCache.h"
+#import "AFHTTPSessionManager.h"
+
+NS_ASSUME_NONNULL_BEGIN
+
+typedef NS_ENUM(NSInteger, AFImageDownloadPrioritization) {
+ AFImageDownloadPrioritizationFIFO,
+ AFImageDownloadPrioritizationLIFO
+};
+
+/**
+ The `AFImageDownloadReceipt` is an object vended by the `AFImageDownloader` when starting a data task. It can be used to cancel active tasks running on the `AFImageDownloader` session. As a general rule, image data tasks should be cancelled using the `AFImageDownloadReceipt` instead of calling `cancel` directly on the `task` itself. The `AFImageDownloader` is optimized to handle duplicate task scenarios as well as pending versus active downloads.
+ */
+@interface AFImageDownloadReceipt : NSObject
+
+/**
+ The data task created by the `AFImageDownloader`.
+*/
+@property (nonatomic, strong) NSURLSessionDataTask *task;
+
+/**
+ The unique identifier for the success and failure blocks when duplicate requests are made.
+ */
+@property (nonatomic, strong) NSUUID *receiptID;
+@end
+
+/** The `AFImageDownloader` class is responsible for downloading images in parallel on a prioritized queue. Incoming downloads are added to the front or back of the queue depending on the download prioritization. Each downloaded image is cached in the underlying `NSURLCache` as well as the in-memory image cache. By default, any download request with a cached image equivalent in the image cache will automatically be served the cached image representation.
+ */
+@interface AFImageDownloader : NSObject
+
+/**
+ The image cache used to store all downloaded images in. `AFAutoPurgingImageCache` by default.
+ */
+@property (nonatomic, strong, nullable) id <AFImageRequestCache> imageCache;
+
+/**
+ The `AFHTTPSessionManager` used to download images. By default, this is configured with an `AFImageResponseSerializer`, and a shared `NSURLCache` for all image downloads.
+ */
+@property (nonatomic, strong) AFHTTPSessionManager *sessionManager;
+
+/**
+ Defines the order prioritization of incoming download requests being inserted into the queue. `AFImageDownloadPrioritizationFIFO` by default.
+ */
+@property (nonatomic, assign) AFImageDownloadPrioritization downloadPrioritizaton;
+
+/**
+ The shared default instance of `AFImageDownloader` initialized with default values.
+ */
++ (instancetype)defaultInstance;
+
+/**
+ Creates a default `NSURLCache` with common usage parameter values.
+
+ @returns The default `NSURLCache` instance.
+ */
++ (NSURLCache *)defaultURLCache;
+
+/**
+ Default initializer
+
+ @return An instance of `AFImageDownloader` initialized with default values.
+ */
+- (instancetype)init;
+
+/**
+ Initializes the `AFImageDownloader` instance with the given session manager, download prioritization, maximum active download count and image cache.
+
+ @param sessionManager The session manager to use to download images.
+ @param downloadPrioritization The download prioritization of the download queue.
+ @param maximumActiveDownloads The maximum number of active downloads allowed at any given time. Recommend `4`.
+ @param imageCache The image cache used to store all downloaded images in.
+
+ @return The new `AFImageDownloader` instance.
+ */
+- (instancetype)initWithSessionManager:(AFHTTPSessionManager *)sessionManager
+ downloadPrioritization:(AFImageDownloadPrioritization)downloadPrioritization
+ maximumActiveDownloads:(NSInteger)maximumActiveDownloads
+ imageCache:(nullable id <AFImageRequestCache>)imageCache;
+
+/**
+ Creates a data task using the `sessionManager` instance for the specified URL request.
+
+ If the same data task is already in the queue or currently being downloaded, the success and failure blocks are
+ appended to the already existing task. Once the task completes, all success or failure blocks attached to the
+ task are executed in the order they were added.
+
+ @param request The URL request.
+ @param success A block to be executed when the image data task finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the image created from the response data of request. If the image was returned from cache, the response parameter will be `nil`.
+ @param failure A block object to be executed when the image data task finishes unsuccessfully, or that finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the error object describing the network or parsing error that occurred.
+
+ @return The image download receipt for the data task if available. `nil` if the image is stored in the cache.
+ cache and the URL request cache policy allows the cache to be used.
+ */
+- (nullable AFImageDownloadReceipt *)downloadImageForURLRequest:(NSURLRequest *)request
+ success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *responseObject))success
+ failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure;
+
+/**
+ Creates a data task using the `sessionManager` instance for the specified URL request.
+
+ If the same data task is already in the queue or currently being downloaded, the success and failure blocks are
+ appended to the already existing task. Once the task completes, all success or failure blocks attached to the
+ task are executed in the order they were added.
+
+ @param request The URL request.
+ @param receiptID The identifier to use for the download receipt that will be created for this request. This must be a unique identifier that does not represent any other request.
+ @param success A block to be executed when the image data task finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the image created from the response data of request. If the image was returned from cache, the response parameter will be `nil`.
+ @param failure A block object to be executed when the image data task finishes unsuccessfully, or that finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the error object describing the network or parsing error that occurred.
+
+ @return The image download receipt for the data task if available. `nil` if the image is stored in the cache.
+ cache and the URL request cache policy allows the cache to be used.
+ */
+- (nullable AFImageDownloadReceipt *)downloadImageForURLRequest:(NSURLRequest *)request
+ withReceiptID:(NSUUID *)receiptID
+ success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *responseObject))success
+ failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure;
+
+/**
+ Cancels the data task in the receipt by removing the corresponding success and failure blocks and cancelling the data task if necessary.
+
+ If the data task is pending in the queue, it will be cancelled if no other success and failure blocks are registered with the data task. If the data task is currently executing or is already completed, the success and failure blocks are removed and will not be called when the task finishes.
+
+ @param imageDownloadReceipt The image download receipt to cancel.
+ */
+- (void)cancelTaskForImageDownloadReceipt:(AFImageDownloadReceipt *)imageDownloadReceipt;
+
+@end
+
+#endif
+
+NS_ASSUME_NONNULL_END
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFImageDownloader.m b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFImageDownloader.m
new file mode 100755
index 0000000..78477bf
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFImageDownloader.m
@@ -0,0 +1,391 @@
+// AFImageDownloader.m
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import "AFImageDownloader.h"
+#import "AFHTTPSessionManager.h"
+
+@interface AFImageDownloaderResponseHandler : NSObject
+@property (nonatomic, strong) NSUUID *uuid;
+@property (nonatomic, copy) void (^successBlock)(NSURLRequest*, NSHTTPURLResponse*, UIImage*);
+@property (nonatomic, copy) void (^failureBlock)(NSURLRequest*, NSHTTPURLResponse*, NSError*);
+@end
+
+@implementation AFImageDownloaderResponseHandler
+
+- (instancetype)initWithUUID:(NSUUID *)uuid
+ success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *responseObject))success
+ failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure {
+ if (self = [self init]) {
+ self.uuid = uuid;
+ self.successBlock = success;
+ self.failureBlock = failure;
+ }
+ return self;
+}
+
+- (NSString *)description {
+ return [NSString stringWithFormat: @"<AFImageDownloaderResponseHandler>UUID: %@", [self.uuid UUIDString]];
+}
+
+@end
+
+@interface AFImageDownloaderMergedTask : NSObject
+@property (nonatomic, strong) NSString *URLIdentifier;
+@property (nonatomic, strong) NSUUID *identifier;
+@property (nonatomic, strong) NSURLSessionDataTask *task;
+@property (nonatomic, strong) NSMutableArray <AFImageDownloaderResponseHandler*> *responseHandlers;
+
+@end
+
+@implementation AFImageDownloaderMergedTask
+
+- (instancetype)initWithURLIdentifier:(NSString *)URLIdentifier identifier:(NSUUID *)identifier task:(NSURLSessionDataTask *)task {
+ if (self = [self init]) {
+ self.URLIdentifier = URLIdentifier;
+ self.task = task;
+ self.identifier = identifier;
+ self.responseHandlers = [[NSMutableArray alloc] init];
+ }
+ return self;
+}
+
+- (void)addResponseHandler:(AFImageDownloaderResponseHandler*)handler {
+ [self.responseHandlers addObject:handler];
+}
+
+- (void)removeResponseHandler:(AFImageDownloaderResponseHandler*)handler {
+ [self.responseHandlers removeObject:handler];
+}
+
+@end
+
+@implementation AFImageDownloadReceipt
+
+- (instancetype)initWithReceiptID:(NSUUID *)receiptID task:(NSURLSessionDataTask *)task {
+ if (self = [self init]) {
+ self.receiptID = receiptID;
+ self.task = task;
+ }
+ return self;
+}
+
+@end
+
+@interface AFImageDownloader ()
+
+@property (nonatomic, strong) dispatch_queue_t synchronizationQueue;
+@property (nonatomic, strong) dispatch_queue_t responseQueue;
+
+@property (nonatomic, assign) NSInteger maximumActiveDownloads;
+@property (nonatomic, assign) NSInteger activeRequestCount;
+
+@property (nonatomic, strong) NSMutableArray *queuedMergedTasks;
+@property (nonatomic, strong) NSMutableDictionary *mergedTasks;
+
+@end
+
+
+@implementation AFImageDownloader
+
++ (NSURLCache *)defaultURLCache {
+ return [[NSURLCache alloc] initWithMemoryCapacity:20 * 1024 * 1024
+ diskCapacity:150 * 1024 * 1024
+ diskPath:@"com.alamofire.imagedownloader"];
+}
+
++ (NSURLSessionConfiguration *)defaultURLSessionConfiguration {
+ NSURLSessionConfiguration *configuration = [NSURLSessionConfiguration defaultSessionConfiguration];
+
+ //TODO set the default HTTP headers
+
+ configuration.HTTPShouldSetCookies = YES;
+ configuration.HTTPShouldUsePipelining = NO;
+
+ configuration.requestCachePolicy = NSURLRequestUseProtocolCachePolicy;
+ configuration.allowsCellularAccess = YES;
+ configuration.timeoutIntervalForRequest = 60.0;
+ configuration.URLCache = [AFImageDownloader defaultURLCache];
+
+ return configuration;
+}
+
+- (instancetype)init {
+ NSURLSessionConfiguration *defaultConfiguration = [self.class defaultURLSessionConfiguration];
+ AFHTTPSessionManager *sessionManager = [[AFHTTPSessionManager alloc] initWithSessionConfiguration:defaultConfiguration];
+ sessionManager.responseSerializer = [AFImageResponseSerializer serializer];
+
+ return [self initWithSessionManager:sessionManager
+ downloadPrioritization:AFImageDownloadPrioritizationFIFO
+ maximumActiveDownloads:4
+ imageCache:[[AFAutoPurgingImageCache alloc] init]];
+}
+
+- (instancetype)initWithSessionManager:(AFHTTPSessionManager *)sessionManager
+ downloadPrioritization:(AFImageDownloadPrioritization)downloadPrioritization
+ maximumActiveDownloads:(NSInteger)maximumActiveDownloads
+ imageCache:(id <AFImageRequestCache>)imageCache {
+ if (self = [super init]) {
+ self.sessionManager = sessionManager;
+
+ self.downloadPrioritizaton = downloadPrioritization;
+ self.maximumActiveDownloads = maximumActiveDownloads;
+ self.imageCache = imageCache;
+
+ self.queuedMergedTasks = [[NSMutableArray alloc] init];
+ self.mergedTasks = [[NSMutableDictionary alloc] init];
+ self.activeRequestCount = 0;
+
+ NSString *name = [NSString stringWithFormat:@"com.alamofire.imagedownloader.synchronizationqueue-%@", [[NSUUID UUID] UUIDString]];
+ self.synchronizationQueue = dispatch_queue_create([name cStringUsingEncoding:NSASCIIStringEncoding], DISPATCH_QUEUE_SERIAL);
+
+ name = [NSString stringWithFormat:@"com.alamofire.imagedownloader.responsequeue-%@", [[NSUUID UUID] UUIDString]];
+ self.responseQueue = dispatch_queue_create([name cStringUsingEncoding:NSASCIIStringEncoding], DISPATCH_QUEUE_CONCURRENT);
+ }
+
+ return self;
+}
+
++ (instancetype)defaultInstance {
+ static AFImageDownloader *sharedInstance = nil;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ sharedInstance = [[self alloc] init];
+ });
+ return sharedInstance;
+}
+
+- (nullable AFImageDownloadReceipt *)downloadImageForURLRequest:(NSURLRequest *)request
+ success:(void (^)(NSURLRequest * _Nonnull, NSHTTPURLResponse * _Nullable, UIImage * _Nonnull))success
+ failure:(void (^)(NSURLRequest * _Nonnull, NSHTTPURLResponse * _Nullable, NSError * _Nonnull))failure {
+ return [self downloadImageForURLRequest:request withReceiptID:[NSUUID UUID] success:success failure:failure];
+}
+
+- (nullable AFImageDownloadReceipt *)downloadImageForURLRequest:(NSURLRequest *)request
+ withReceiptID:(nonnull NSUUID *)receiptID
+ success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *responseObject))success
+ failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure {
+ __block NSURLSessionDataTask *task = nil;
+ dispatch_sync(self.synchronizationQueue, ^{
+ NSString *URLIdentifier = request.URL.absoluteString;
+ if (URLIdentifier == nil) {
+ if (failure) {
+ NSError *error = [NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorBadURL userInfo:nil];
+ dispatch_async(dispatch_get_main_queue(), ^{
+ failure(request, nil, error);
+ });
+ }
+ return;
+ }
+
+ // 1) Append the success and failure blocks to a pre-existing request if it already exists
+ AFImageDownloaderMergedTask *existingMergedTask = self.mergedTasks[URLIdentifier];
+ if (existingMergedTask != nil) {
+ AFImageDownloaderResponseHandler *handler = [[AFImageDownloaderResponseHandler alloc] initWithUUID:receiptID success:success failure:failure];
+ [existingMergedTask addResponseHandler:handler];
+ task = existingMergedTask.task;
+ return;
+ }
+
+ // 2) Attempt to load the image from the image cache if the cache policy allows it
+ switch (request.cachePolicy) {
+ case NSURLRequestUseProtocolCachePolicy:
+ case NSURLRequestReturnCacheDataElseLoad:
+ case NSURLRequestReturnCacheDataDontLoad: {
+ UIImage *cachedImage = [self.imageCache imageforRequest:request withAdditionalIdentifier:nil];
+ if (cachedImage != nil) {
+ if (success) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ success(request, nil, cachedImage);
+ });
+ }
+ return;
+ }
+ break;
+ }
+ default:
+ break;
+ }
+
+ // 3) Create the request and set up authentication, validation and response serialization
+ NSUUID *mergedTaskIdentifier = [NSUUID UUID];
+ NSURLSessionDataTask *createdTask;
+ __weak __typeof__(self) weakSelf = self;
+
+ createdTask = [self.sessionManager
+ dataTaskWithRequest:request
+ completionHandler:^(NSURLResponse * _Nonnull response, id _Nullable responseObject, NSError * _Nullable error) {
+ dispatch_async(self.responseQueue, ^{
+ __strong __typeof__(weakSelf) strongSelf = weakSelf;
+ AFImageDownloaderMergedTask *mergedTask = self.mergedTasks[URLIdentifier];
+ if ([mergedTask.identifier isEqual:mergedTaskIdentifier]) {
+ mergedTask = [strongSelf safelyRemoveMergedTaskWithURLIdentifier:URLIdentifier];
+ if (error) {
+ for (AFImageDownloaderResponseHandler *handler in mergedTask.responseHandlers) {
+ if (handler.failureBlock) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ handler.failureBlock(request, (NSHTTPURLResponse*)response, error);
+ });
+ }
+ }
+ } else {
+ [strongSelf.imageCache addImage:responseObject forRequest:request withAdditionalIdentifier:nil];
+
+ for (AFImageDownloaderResponseHandler *handler in mergedTask.responseHandlers) {
+ if (handler.successBlock) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ handler.successBlock(request, (NSHTTPURLResponse*)response, responseObject);
+ });
+ }
+ }
+
+ }
+ }
+ [strongSelf safelyDecrementActiveTaskCount];
+ [strongSelf safelyStartNextTaskIfNecessary];
+ });
+ }];
+
+ // 4) Store the response handler for use when the request completes
+ AFImageDownloaderResponseHandler *handler = [[AFImageDownloaderResponseHandler alloc] initWithUUID:receiptID
+ success:success
+ failure:failure];
+ AFImageDownloaderMergedTask *mergedTask = [[AFImageDownloaderMergedTask alloc]
+ initWithURLIdentifier:URLIdentifier
+ identifier:mergedTaskIdentifier
+ task:createdTask];
+ [mergedTask addResponseHandler:handler];
+ self.mergedTasks[URLIdentifier] = mergedTask;
+
+ // 5) Either start the request or enqueue it depending on the current active request count
+ if ([self isActiveRequestCountBelowMaximumLimit]) {
+ [self startMergedTask:mergedTask];
+ } else {
+ [self enqueueMergedTask:mergedTask];
+ }
+
+ task = mergedTask.task;
+ });
+ if (task) {
+ return [[AFImageDownloadReceipt alloc] initWithReceiptID:receiptID task:task];
+ } else {
+ return nil;
+ }
+}
+
+- (void)cancelTaskForImageDownloadReceipt:(AFImageDownloadReceipt *)imageDownloadReceipt {
+ dispatch_sync(self.synchronizationQueue, ^{
+ NSString *URLIdentifier = imageDownloadReceipt.task.originalRequest.URL.absoluteString;
+ AFImageDownloaderMergedTask *mergedTask = self.mergedTasks[URLIdentifier];
+ NSUInteger index = [mergedTask.responseHandlers indexOfObjectPassingTest:^BOOL(AFImageDownloaderResponseHandler * _Nonnull handler, __unused NSUInteger idx, __unused BOOL * _Nonnull stop) {
+ return handler.uuid == imageDownloadReceipt.receiptID;
+ }];
+
+ if (index != NSNotFound) {
+ AFImageDownloaderResponseHandler *handler = mergedTask.responseHandlers[index];
+ [mergedTask removeResponseHandler:handler];
+ NSString *failureReason = [NSString stringWithFormat:@"ImageDownloader cancelled URL request: %@",imageDownloadReceipt.task.originalRequest.URL.absoluteString];
+ NSDictionary *userInfo = @{NSLocalizedFailureReasonErrorKey:failureReason};
+ NSError *error = [NSError errorWithDomain:NSURLErrorDomain code:NSURLErrorCancelled userInfo:userInfo];
+ if (handler.failureBlock) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ handler.failureBlock(imageDownloadReceipt.task.originalRequest, nil, error);
+ });
+ }
+ }
+
+ if (mergedTask.responseHandlers.count == 0 && mergedTask.task.state == NSURLSessionTaskStateSuspended) {
+ [mergedTask.task cancel];
+ [self removeMergedTaskWithURLIdentifier:URLIdentifier];
+ }
+ });
+}
+
+- (AFImageDownloaderMergedTask*)safelyRemoveMergedTaskWithURLIdentifier:(NSString *)URLIdentifier {
+ __block AFImageDownloaderMergedTask *mergedTask = nil;
+ dispatch_sync(self.synchronizationQueue, ^{
+ mergedTask = [self removeMergedTaskWithURLIdentifier:URLIdentifier];
+ });
+ return mergedTask;
+}
+
+//This method should only be called from safely within the synchronizationQueue
+- (AFImageDownloaderMergedTask *)removeMergedTaskWithURLIdentifier:(NSString *)URLIdentifier {
+ AFImageDownloaderMergedTask *mergedTask = self.mergedTasks[URLIdentifier];
+ [self.mergedTasks removeObjectForKey:URLIdentifier];
+ return mergedTask;
+}
+
+- (void)safelyDecrementActiveTaskCount {
+ dispatch_sync(self.synchronizationQueue, ^{
+ if (self.activeRequestCount > 0) {
+ self.activeRequestCount -= 1;
+ }
+ });
+}
+
+- (void)safelyStartNextTaskIfNecessary {
+ dispatch_sync(self.synchronizationQueue, ^{
+ if ([self isActiveRequestCountBelowMaximumLimit]) {
+ while (self.queuedMergedTasks.count > 0) {
+ AFImageDownloaderMergedTask *mergedTask = [self dequeueMergedTask];
+ if (mergedTask.task.state == NSURLSessionTaskStateSuspended) {
+ [self startMergedTask:mergedTask];
+ break;
+ }
+ }
+ }
+ });
+}
+
+- (void)startMergedTask:(AFImageDownloaderMergedTask *)mergedTask {
+ [mergedTask.task resume];
+ ++self.activeRequestCount;
+}
+
+- (void)enqueueMergedTask:(AFImageDownloaderMergedTask *)mergedTask {
+ switch (self.downloadPrioritizaton) {
+ case AFImageDownloadPrioritizationFIFO:
+ [self.queuedMergedTasks addObject:mergedTask];
+ break;
+ case AFImageDownloadPrioritizationLIFO:
+ [self.queuedMergedTasks insertObject:mergedTask atIndex:0];
+ break;
+ }
+}
+
+- (AFImageDownloaderMergedTask *)dequeueMergedTask {
+ AFImageDownloaderMergedTask *mergedTask = nil;
+ mergedTask = [self.queuedMergedTasks firstObject];
+ [self.queuedMergedTasks removeObject:mergedTask];
+ return mergedTask;
+}
+
+- (BOOL)isActiveRequestCountBelowMaximumLimit {
+ return self.activeRequestCount < self.maximumActiveDownloads;
+}
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.h
new file mode 100755
index 0000000..3bcf289
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.h
@@ -0,0 +1,103 @@
+// AFNetworkActivityIndicatorManager.h
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ `AFNetworkActivityIndicatorManager` manages the state of the network activity indicator in the status bar. When enabled, it will listen for notifications indicating that a session task has started or finished, and start or stop animating the indicator accordingly. The number of active requests is incremented and decremented much like a stack or a semaphore, and the activity indicator will animate so long as that number is greater than zero.
+
+ You should enable the shared instance of `AFNetworkActivityIndicatorManager` when your application finishes launching. In `AppDelegate application:didFinishLaunchingWithOptions:` you can do so with the following code:
+
+ [[AFNetworkActivityIndicatorManager sharedManager] setEnabled:YES];
+
+ By setting `enabled` to `YES` for `sharedManager`, the network activity indicator will show and hide automatically as requests start and finish. You should not ever need to call `incrementActivityCount` or `decrementActivityCount` yourself.
+
+ See the Apple Human Interface Guidelines section about the Network Activity Indicator for more information:
+ http://developer.apple.com/library/iOS/#documentation/UserExperience/Conceptual/MobileHIG/UIElementGuidelines/UIElementGuidelines.html#//apple_ref/doc/uid/TP40006556-CH13-SW44
+ */
+NS_EXTENSION_UNAVAILABLE_IOS("Use view controller based solutions where appropriate instead.")
+@interface AFNetworkActivityIndicatorManager : NSObject
+
+/**
+ A Boolean value indicating whether the manager is enabled.
+
+ If YES, the manager will change status bar network activity indicator according to network operation notifications it receives. The default value is NO.
+ */
+@property (nonatomic, assign, getter = isEnabled) BOOL enabled;
+
+/**
+ A Boolean value indicating whether the network activity indicator manager is currently active.
+*/
+@property (readonly, nonatomic, assign, getter=isNetworkActivityIndicatorVisible) BOOL networkActivityIndicatorVisible;
+
+/**
+ A time interval indicating the minimum duration of networking activity that should occur before the activity indicator is displayed. The default value 1 second. If the network activity indicator should be displayed immediately when network activity occurs, this value should be set to 0 seconds.
+
+ Apple's HIG describes the following:
+
+ > Display the network activity indicator to provide feedback when your app accesses the network for more than a couple of seconds. If the operation finishes sooner than that, you don���t have to show the network activity indicator, because the indicator is likely to disappear before users notice its presence.
+
+ */
+@property (nonatomic, assign) NSTimeInterval activationDelay;
+
+/**
+ A time interval indicating the duration of time of no networking activity required before the activity indicator is disabled. This allows for continuous display of the network activity indicator across multiple requests. The default value is 0.17 seconds.
+ */
+
+@property (nonatomic, assign) NSTimeInterval completionDelay;
+
+/**
+ Returns the shared network activity indicator manager object for the system.
+
+ @return The systemwide network activity indicator manager.
+ */
++ (instancetype)sharedManager;
+
+/**
+ Increments the number of active network requests. If this number was zero before incrementing, this will start animating the status bar network activity indicator.
+ */
+- (void)incrementActivityCount;
+
+/**
+ Decrements the number of active network requests. If this number becomes zero after decrementing, this will stop animating the status bar network activity indicator.
+ */
+- (void)decrementActivityCount;
+
+/**
+ Set the a custom method to be executed when the network activity indicator manager should be hidden/shown. By default, this is null, and the UIApplication Network Activity Indicator will be managed automatically. If this block is set, it is the responsiblity of the caller to manager the network activity indicator going forward.
+
+ @param block A block to be executed when the network activity indicator status changes.
+ */
+- (void)setNetworkingActivityActionWithBlock:(nullable void (^)(BOOL networkActivityIndicatorVisible))block;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.m b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.m
new file mode 100755
index 0000000..b446abb
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/AFNetworkActivityIndicatorManager.m
@@ -0,0 +1,258 @@
+// AFNetworkActivityIndicatorManager.m
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "AFNetworkActivityIndicatorManager.h"
+
+#if TARGET_OS_IOS
+#import "AFURLSessionManager.h"
+
+typedef NS_ENUM(NSInteger, AFNetworkActivityManagerState) {
+ AFNetworkActivityManagerStateNotActive,
+ AFNetworkActivityManagerStateDelayingStart,
+ AFNetworkActivityManagerStateActive,
+ AFNetworkActivityManagerStateDelayingEnd
+};
+
+static NSTimeInterval const kDefaultAFNetworkActivityManagerActivationDelay = 1.0;
+static NSTimeInterval const kDefaultAFNetworkActivityManagerCompletionDelay = 0.17;
+
+static NSURLRequest * AFNetworkRequestFromNotification(NSNotification *notification) {
+ if ([[notification object] respondsToSelector:@selector(originalRequest)]) {
+ return [(NSURLSessionTask *)[notification object] originalRequest];
+ } else {
+ return nil;
+ }
+}
+
+typedef void (^AFNetworkActivityActionBlock)(BOOL networkActivityIndicatorVisible);
+
+@interface AFNetworkActivityIndicatorManager ()
+@property (readwrite, nonatomic, assign) NSInteger activityCount;
+@property (readwrite, nonatomic, strong) NSTimer *activationDelayTimer;
+@property (readwrite, nonatomic, strong) NSTimer *completionDelayTimer;
+@property (readonly, nonatomic, getter = isNetworkActivityOccurring) BOOL networkActivityOccurring;
+@property (nonatomic, copy) AFNetworkActivityActionBlock networkActivityActionBlock;
+@property (nonatomic, assign) AFNetworkActivityManagerState currentState;
+@property (nonatomic, assign, getter=isNetworkActivityIndicatorVisible) BOOL networkActivityIndicatorVisible;
+
+- (void)updateCurrentStateForNetworkActivityChange;
+@end
+
+@implementation AFNetworkActivityIndicatorManager
+
++ (instancetype)sharedManager {
+ static AFNetworkActivityIndicatorManager *_sharedManager = nil;
+ static dispatch_once_t oncePredicate;
+ dispatch_once(&oncePredicate, ^{
+ _sharedManager = [[self alloc] init];
+ });
+
+ return _sharedManager;
+}
+
+- (instancetype)init {
+ self = [super init];
+ if (!self) {
+ return nil;
+ }
+ self.currentState = AFNetworkActivityManagerStateNotActive;
+ [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkRequestDidStart:) name:AFNetworkingTaskDidResumeNotification object:nil];
+ [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkRequestDidFinish:) name:AFNetworkingTaskDidSuspendNotification object:nil];
+ [[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(networkRequestDidFinish:) name:AFNetworkingTaskDidCompleteNotification object:nil];
+ self.activationDelay = kDefaultAFNetworkActivityManagerActivationDelay;
+ self.completionDelay = kDefaultAFNetworkActivityManagerCompletionDelay;
+
+ return self;
+}
+
+- (void)dealloc {
+ [[NSNotificationCenter defaultCenter] removeObserver:self];
+
+ [_activationDelayTimer invalidate];
+ [_completionDelayTimer invalidate];
+}
+
+- (void)setEnabled:(BOOL)enabled {
+ _enabled = enabled;
+ if (enabled == NO) {
+ [self setCurrentState:AFNetworkActivityManagerStateNotActive];
+ }
+}
+
+- (void)setNetworkingActivityActionWithBlock:(void (^)(BOOL networkActivityIndicatorVisible))block {
+ self.networkActivityActionBlock = block;
+}
+
+- (BOOL)isNetworkActivityOccurring {
+ @synchronized(self) {
+ return self.activityCount > 0;
+ }
+}
+
+- (void)setNetworkActivityIndicatorVisible:(BOOL)networkActivityIndicatorVisible {
+ if (_networkActivityIndicatorVisible != networkActivityIndicatorVisible) {
+ [self willChangeValueForKey:@"networkActivityIndicatorVisible"];
+ @synchronized(self) {
+ _networkActivityIndicatorVisible = networkActivityIndicatorVisible;
+ }
+ [self didChangeValueForKey:@"networkActivityIndicatorVisible"];
+ if (self.networkActivityActionBlock) {
+ self.networkActivityActionBlock(networkActivityIndicatorVisible);
+ } else {
+ [[UIApplication sharedApplication] setNetworkActivityIndicatorVisible:networkActivityIndicatorVisible];
+ }
+ }
+}
+
+- (void)setActivityCount:(NSInteger)activityCount {
+ @synchronized(self) {
+ _activityCount = activityCount;
+ }
+
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [self updateCurrentStateForNetworkActivityChange];
+ });
+}
+
+- (void)incrementActivityCount {
+ [self willChangeValueForKey:@"activityCount"];
+ @synchronized(self) {
+ _activityCount++;
+ }
+ [self didChangeValueForKey:@"activityCount"];
+
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [self updateCurrentStateForNetworkActivityChange];
+ });
+}
+
+- (void)decrementActivityCount {
+ [self willChangeValueForKey:@"activityCount"];
+ @synchronized(self) {
+ _activityCount = MAX(_activityCount - 1, 0);
+ }
+ [self didChangeValueForKey:@"activityCount"];
+
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [self updateCurrentStateForNetworkActivityChange];
+ });
+}
+
+- (void)networkRequestDidStart:(NSNotification *)notification {
+ if ([AFNetworkRequestFromNotification(notification) URL]) {
+ [self incrementActivityCount];
+ }
+}
+
+- (void)networkRequestDidFinish:(NSNotification *)notification {
+ if ([AFNetworkRequestFromNotification(notification) URL]) {
+ [self decrementActivityCount];
+ }
+}
+
+#pragma mark - Internal State Management
+- (void)setCurrentState:(AFNetworkActivityManagerState)currentState {
+ @synchronized(self) {
+ if (_currentState != currentState) {
+ [self willChangeValueForKey:@"currentState"];
+ _currentState = currentState;
+ switch (currentState) {
+ case AFNetworkActivityManagerStateNotActive:
+ [self cancelActivationDelayTimer];
+ [self cancelCompletionDelayTimer];
+ [self setNetworkActivityIndicatorVisible:NO];
+ break;
+ case AFNetworkActivityManagerStateDelayingStart:
+ [self startActivationDelayTimer];
+ break;
+ case AFNetworkActivityManagerStateActive:
+ [self cancelCompletionDelayTimer];
+ [self setNetworkActivityIndicatorVisible:YES];
+ break;
+ case AFNetworkActivityManagerStateDelayingEnd:
+ [self startCompletionDelayTimer];
+ break;
+ }
+ }
+ [self didChangeValueForKey:@"currentState"];
+ }
+}
+
+- (void)updateCurrentStateForNetworkActivityChange {
+ if (self.enabled) {
+ switch (self.currentState) {
+ case AFNetworkActivityManagerStateNotActive:
+ if (self.isNetworkActivityOccurring) {
+ [self setCurrentState:AFNetworkActivityManagerStateDelayingStart];
+ }
+ break;
+ case AFNetworkActivityManagerStateDelayingStart:
+ //No op. Let the delay timer finish out.
+ break;
+ case AFNetworkActivityManagerStateActive:
+ if (!self.isNetworkActivityOccurring) {
+ [self setCurrentState:AFNetworkActivityManagerStateDelayingEnd];
+ }
+ break;
+ case AFNetworkActivityManagerStateDelayingEnd:
+ if (self.isNetworkActivityOccurring) {
+ [self setCurrentState:AFNetworkActivityManagerStateActive];
+ }
+ break;
+ }
+ }
+}
+
+- (void)startActivationDelayTimer {
+ self.activationDelayTimer = [NSTimer
+ timerWithTimeInterval:self.activationDelay target:self selector:@selector(activationDelayTimerFired) userInfo:nil repeats:NO];
+ [[NSRunLoop mainRunLoop] addTimer:self.activationDelayTimer forMode:NSRunLoopCommonModes];
+}
+
+- (void)activationDelayTimerFired {
+ if (self.networkActivityOccurring) {
+ [self setCurrentState:AFNetworkActivityManagerStateActive];
+ } else {
+ [self setCurrentState:AFNetworkActivityManagerStateNotActive];
+ }
+}
+
+- (void)startCompletionDelayTimer {
+ [self.completionDelayTimer invalidate];
+ self.completionDelayTimer = [NSTimer timerWithTimeInterval:self.completionDelay target:self selector:@selector(completionDelayTimerFired) userInfo:nil repeats:NO];
+ [[NSRunLoop mainRunLoop] addTimer:self.completionDelayTimer forMode:NSRunLoopCommonModes];
+}
+
+- (void)completionDelayTimerFired {
+ [self setCurrentState:AFNetworkActivityManagerStateNotActive];
+}
+
+- (void)cancelActivationDelayTimer {
+ [self.activationDelayTimer invalidate];
+}
+
+- (void)cancelCompletionDelayTimer {
+ [self.completionDelayTimer invalidate];
+}
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.h
new file mode 100755
index 0000000..d424c9b
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.h
@@ -0,0 +1,48 @@
+// UIActivityIndicatorView+AFNetworking.h
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import <UIKit/UIKit.h>
+
+/**
+ This category adds methods to the UIKit framework's `UIActivityIndicatorView` class. The methods in this category provide support for automatically starting and stopping animation depending on the loading state of a session task.
+ */
+@interface UIActivityIndicatorView (AFNetworking)
+
+///----------------------------------
+/// @name Animating for Session Tasks
+///----------------------------------
+
+/**
+ Binds the animating state to the state of the specified task.
+
+ @param task The task. If `nil`, automatic updating from any previously specified operation will be disabled.
+ */
+- (void)setAnimatingWithStateOfTask:(nullable NSURLSessionTask *)task;
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.m b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.m
new file mode 100755
index 0000000..602a72d
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIActivityIndicatorView+AFNetworking.m
@@ -0,0 +1,114 @@
+// UIActivityIndicatorView+AFNetworking.m
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIActivityIndicatorView+AFNetworking.h"
+#import <objc/runtime.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import "AFURLSessionManager.h"
+
+@interface AFActivityIndicatorViewNotificationObserver : NSObject
+@property (readonly, nonatomic, weak) UIActivityIndicatorView *activityIndicatorView;
+- (instancetype)initWithActivityIndicatorView:(UIActivityIndicatorView *)activityIndicatorView;
+
+- (void)setAnimatingWithStateOfTask:(NSURLSessionTask *)task;
+
+@end
+
+@implementation UIActivityIndicatorView (AFNetworking)
+
+- (AFActivityIndicatorViewNotificationObserver *)af_notificationObserver {
+ AFActivityIndicatorViewNotificationObserver *notificationObserver = objc_getAssociatedObject(self, @selector(af_notificationObserver));
+ if (notificationObserver == nil) {
+ notificationObserver = [[AFActivityIndicatorViewNotificationObserver alloc] initWithActivityIndicatorView:self];
+ objc_setAssociatedObject(self, @selector(af_notificationObserver), notificationObserver, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+ }
+ return notificationObserver;
+}
+
+- (void)setAnimatingWithStateOfTask:(NSURLSessionTask *)task {
+ [[self af_notificationObserver] setAnimatingWithStateOfTask:task];
+}
+
+@end
+
+@implementation AFActivityIndicatorViewNotificationObserver
+
+- (instancetype)initWithActivityIndicatorView:(UIActivityIndicatorView *)activityIndicatorView
+{
+ self = [super init];
+ if (self) {
+ _activityIndicatorView = activityIndicatorView;
+ }
+ return self;
+}
+
+- (void)setAnimatingWithStateOfTask:(NSURLSessionTask *)task {
+ NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidResumeNotification object:nil];
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidSuspendNotification object:nil];
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidCompleteNotification object:nil];
+
+ if (task) {
+ if (task.state != NSURLSessionTaskStateCompleted) {
+ UIActivityIndicatorView *activityIndicatorView = self.activityIndicatorView;
+ if (task.state == NSURLSessionTaskStateRunning) {
+ [activityIndicatorView startAnimating];
+ } else {
+ [activityIndicatorView stopAnimating];
+ }
+
+ [notificationCenter addObserver:self selector:@selector(af_startAnimating) name:AFNetworkingTaskDidResumeNotification object:task];
+ [notificationCenter addObserver:self selector:@selector(af_stopAnimating) name:AFNetworkingTaskDidCompleteNotification object:task];
+ [notificationCenter addObserver:self selector:@selector(af_stopAnimating) name:AFNetworkingTaskDidSuspendNotification object:task];
+ }
+ }
+}
+
+#pragma mark -
+
+- (void)af_startAnimating {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [self.activityIndicatorView startAnimating];
+ });
+}
+
+- (void)af_stopAnimating {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [self.activityIndicatorView stopAnimating];
+ });
+}
+
+#pragma mark -
+
+- (void)dealloc {
+ NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidCompleteNotification object:nil];
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidResumeNotification object:nil];
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidSuspendNotification object:nil];
+}
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.h
new file mode 100755
index 0000000..d33e0d4
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.h
@@ -0,0 +1,175 @@
+// UIButton+AFNetworking.h
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class AFImageDownloader;
+
+/**
+ This category adds methods to the UIKit framework's `UIButton` class. The methods in this category provide support for loading remote images and background images asynchronously from a URL.
+
+ @warning Compound values for control `state` (such as `UIControlStateHighlighted | UIControlStateDisabled`) are unsupported.
+ */
+@interface UIButton (AFNetworking)
+
+///------------------------------------
+/// @name Accessing the Image Downloader
+///------------------------------------
+
+/**
+ Set the shared image downloader used to download images.
+
+ @param imageDownloader The shared image downloader used to download images.
+*/
++ (void)setSharedImageDownloader:(AFImageDownloader *)imageDownloader;
+
+/**
+ The shared image downloader used to download images.
+ */
++ (AFImageDownloader *)sharedImageDownloader;
+
+///--------------------
+/// @name Setting Image
+///--------------------
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it as the image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ @param state The control state.
+ @param url The URL used for the image request.
+ */
+- (void)setImageForState:(UIControlState)state
+ withURL:(NSURL *)url;
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it as the image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ @param state The control state.
+ @param url The URL used for the image request.
+ @param placeholderImage The image to be set initially, until the image request finishes. If `nil`, the button will not change its image until the image request finishes.
+ */
+- (void)setImageForState:(UIControlState)state
+ withURL:(NSURL *)url
+ placeholderImage:(nullable UIImage *)placeholderImage;
+
+/**
+ Asynchronously downloads an image from the specified URL request, and sets it as the image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ If a success block is specified, it is the responsibility of the block to set the image of the button before returning. If no success block is specified, the default behavior of setting the image with `setImage:forState:` is applied.
+
+ @param state The control state.
+ @param urlRequest The URL request used for the image request.
+ @param placeholderImage The image to be set initially, until the image request finishes. If `nil`, the button will not change its image until the image request finishes.
+ @param success A block to be executed when the image data task finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the image created from the response data of request. If the image was returned from cache, the response parameter will be `nil`.
+ @param failure A block object to be executed when the image data task finishes unsuccessfully, or that finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the error object describing the network or parsing error that occurred.
+ */
+- (void)setImageForState:(UIControlState)state
+ withURLRequest:(NSURLRequest *)urlRequest
+ placeholderImage:(nullable UIImage *)placeholderImage
+ success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *image))success
+ failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure;
+
+
+///-------------------------------
+/// @name Setting Background Image
+///-------------------------------
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it as the background image for the specified state once the request is finished. Any previous background image request for the receiver will be cancelled.
+
+ If the background image is cached locally, the background image is set immediately, otherwise the specified placeholder background image will be set immediately, and then the remote background image will be set once the request is finished.
+
+ @param state The control state.
+ @param url The URL used for the background image request.
+ */
+- (void)setBackgroundImageForState:(UIControlState)state
+ withURL:(NSURL *)url;
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it as the background image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ @param state The control state.
+ @param url The URL used for the background image request.
+ @param placeholderImage The background image to be set initially, until the background image request finishes. If `nil`, the button will not change its background image until the background image request finishes.
+ */
+- (void)setBackgroundImageForState:(UIControlState)state
+ withURL:(NSURL *)url
+ placeholderImage:(nullable UIImage *)placeholderImage;
+
+/**
+ Asynchronously downloads an image from the specified URL request, and sets it as the image for the specified state once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ If a success block is specified, it is the responsibility of the block to set the image of the button before returning. If no success block is specified, the default behavior of setting the image with `setBackgroundImage:forState:` is applied.
+
+ @param state The control state.
+ @param urlRequest The URL request used for the image request.
+ @param placeholderImage The background image to be set initially, until the background image request finishes. If `nil`, the button will not change its background image until the background image request finishes.
+ @param success A block to be executed when the image data task finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the image created from the response data of request. If the image was returned from cache, the response parameter will be `nil`.
+ @param failure A block object to be executed when the image data task finishes unsuccessfully, or that finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the error object describing the network or parsing error that occurred.
+ */
+- (void)setBackgroundImageForState:(UIControlState)state
+ withURLRequest:(NSURLRequest *)urlRequest
+ placeholderImage:(nullable UIImage *)placeholderImage
+ success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *image))success
+ failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure;
+
+
+///------------------------------
+/// @name Canceling Image Loading
+///------------------------------
+
+/**
+ Cancels any executing image task for the specified control state of the receiver, if one exists.
+
+ @param state The control state.
+ */
+- (void)cancelImageDownloadTaskForState:(UIControlState)state;
+
+/**
+ Cancels any executing background image task for the specified control state of the receiver, if one exists.
+
+ @param state The control state.
+ */
+- (void)cancelBackgroundImageDownloadTaskForState:(UIControlState)state;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.m b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.m
new file mode 100755
index 0000000..2da6012
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIButton+AFNetworking.m
@@ -0,0 +1,302 @@
+// UIButton+AFNetworking.m
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIButton+AFNetworking.h"
+
+#import <objc/runtime.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import "UIImageView+AFNetworking.h"
+#import "AFImageDownloader.h"
+
+@interface UIButton (_AFNetworking)
+@end
+
+@implementation UIButton (_AFNetworking)
+
+#pragma mark -
+
+static char AFImageDownloadReceiptNormal;
+static char AFImageDownloadReceiptHighlighted;
+static char AFImageDownloadReceiptSelected;
+static char AFImageDownloadReceiptDisabled;
+
+static const char * af_imageDownloadReceiptKeyForState(UIControlState state) {
+ switch (state) {
+ case UIControlStateHighlighted:
+ return &AFImageDownloadReceiptHighlighted;
+ case UIControlStateSelected:
+ return &AFImageDownloadReceiptSelected;
+ case UIControlStateDisabled:
+ return &AFImageDownloadReceiptDisabled;
+ case UIControlStateNormal:
+ default:
+ return &AFImageDownloadReceiptNormal;
+ }
+}
+
+- (AFImageDownloadReceipt *)af_imageDownloadReceiptForState:(UIControlState)state {
+ return (AFImageDownloadReceipt *)objc_getAssociatedObject(self, af_imageDownloadReceiptKeyForState(state));
+}
+
+- (void)af_setImageDownloadReceipt:(AFImageDownloadReceipt *)imageDownloadReceipt
+ forState:(UIControlState)state
+{
+ objc_setAssociatedObject(self, af_imageDownloadReceiptKeyForState(state), imageDownloadReceipt, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+static char AFBackgroundImageDownloadReceiptNormal;
+static char AFBackgroundImageDownloadReceiptHighlighted;
+static char AFBackgroundImageDownloadReceiptSelected;
+static char AFBackgroundImageDownloadReceiptDisabled;
+
+static const char * af_backgroundImageDownloadReceiptKeyForState(UIControlState state) {
+ switch (state) {
+ case UIControlStateHighlighted:
+ return &AFBackgroundImageDownloadReceiptHighlighted;
+ case UIControlStateSelected:
+ return &AFBackgroundImageDownloadReceiptSelected;
+ case UIControlStateDisabled:
+ return &AFBackgroundImageDownloadReceiptDisabled;
+ case UIControlStateNormal:
+ default:
+ return &AFBackgroundImageDownloadReceiptNormal;
+ }
+}
+
+- (AFImageDownloadReceipt *)af_backgroundImageDownloadReceiptForState:(UIControlState)state {
+ return (AFImageDownloadReceipt *)objc_getAssociatedObject(self, af_backgroundImageDownloadReceiptKeyForState(state));
+}
+
+- (void)af_setBackgroundImageDownloadReceipt:(AFImageDownloadReceipt *)imageDownloadReceipt
+ forState:(UIControlState)state
+{
+ objc_setAssociatedObject(self, af_backgroundImageDownloadReceiptKeyForState(state), imageDownloadReceipt, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+@end
+
+#pragma mark -
+
+@implementation UIButton (AFNetworking)
+
++ (AFImageDownloader *)sharedImageDownloader {
+
+ return objc_getAssociatedObject(self, @selector(sharedImageDownloader)) ?: [AFImageDownloader defaultInstance];
+}
+
++ (void)setSharedImageDownloader:(AFImageDownloader *)imageDownloader {
+ objc_setAssociatedObject(self, @selector(sharedImageDownloader), imageDownloader, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+- (void)setImageForState:(UIControlState)state
+ withURL:(NSURL *)url
+{
+ [self setImageForState:state withURL:url placeholderImage:nil];
+}
+
+- (void)setImageForState:(UIControlState)state
+ withURL:(NSURL *)url
+ placeholderImage:(UIImage *)placeholderImage
+{
+ NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
+ [request addValue:@"image/*" forHTTPHeaderField:@"Accept"];
+
+ [self setImageForState:state withURLRequest:request placeholderImage:placeholderImage success:nil failure:nil];
+}
+
+- (void)setImageForState:(UIControlState)state
+ withURLRequest:(NSURLRequest *)urlRequest
+ placeholderImage:(nullable UIImage *)placeholderImage
+ success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *image))success
+ failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure
+{
+ if ([self isActiveTaskURLEqualToURLRequest:urlRequest forState:state]) {
+ return;
+ }
+
+ [self cancelImageDownloadTaskForState:state];
+
+ AFImageDownloader *downloader = [[self class] sharedImageDownloader];
+ id <AFImageRequestCache> imageCache = downloader.imageCache;
+
+ //Use the image from the image cache if it exists
+ UIImage *cachedImage = [imageCache imageforRequest:urlRequest withAdditionalIdentifier:nil];
+ if (cachedImage) {
+ if (success) {
+ success(urlRequest, nil, cachedImage);
+ } else {
+ [self setImage:cachedImage forState:state];
+ }
+ [self af_setImageDownloadReceipt:nil forState:state];
+ } else {
+ if (placeholderImage) {
+ [self setImage:placeholderImage forState:state];
+ }
+
+ __weak __typeof(self)weakSelf = self;
+ NSUUID *downloadID = [NSUUID UUID];
+ AFImageDownloadReceipt *receipt;
+ receipt = [downloader
+ downloadImageForURLRequest:urlRequest
+ withReceiptID:downloadID
+ success:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, UIImage * _Nonnull responseObject) {
+ __strong __typeof(weakSelf)strongSelf = weakSelf;
+ if ([[strongSelf af_imageDownloadReceiptForState:state].receiptID isEqual:downloadID]) {
+ if (success) {
+ success(request, response, responseObject);
+ } else if(responseObject) {
+ [strongSelf setImage:responseObject forState:state];
+ }
+ [strongSelf af_setImageDownloadReceipt:nil forState:state];
+ }
+
+ }
+ failure:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, NSError * _Nonnull error) {
+ __strong __typeof(weakSelf)strongSelf = weakSelf;
+ if ([[strongSelf af_imageDownloadReceiptForState:state].receiptID isEqual:downloadID]) {
+ if (failure) {
+ failure(request, response, error);
+ }
+ [strongSelf af_setImageDownloadReceipt:nil forState:state];
+ }
+ }];
+
+ [self af_setImageDownloadReceipt:receipt forState:state];
+ }
+}
+
+#pragma mark -
+
+- (void)setBackgroundImageForState:(UIControlState)state
+ withURL:(NSURL *)url
+{
+ [self setBackgroundImageForState:state withURL:url placeholderImage:nil];
+}
+
+- (void)setBackgroundImageForState:(UIControlState)state
+ withURL:(NSURL *)url
+ placeholderImage:(nullable UIImage *)placeholderImage
+{
+ NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
+ [request addValue:@"image/*" forHTTPHeaderField:@"Accept"];
+
+ [self setBackgroundImageForState:state withURLRequest:request placeholderImage:placeholderImage success:nil failure:nil];
+}
+
+- (void)setBackgroundImageForState:(UIControlState)state
+ withURLRequest:(NSURLRequest *)urlRequest
+ placeholderImage:(nullable UIImage *)placeholderImage
+ success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *image))success
+ failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure
+{
+ if ([self isActiveBackgroundTaskURLEqualToURLRequest:urlRequest forState:state]) {
+ return;
+ }
+
+ [self cancelBackgroundImageDownloadTaskForState:state];
+
+ AFImageDownloader *downloader = [[self class] sharedImageDownloader];
+ id <AFImageRequestCache> imageCache = downloader.imageCache;
+
+ //Use the image from the image cache if it exists
+ UIImage *cachedImage = [imageCache imageforRequest:urlRequest withAdditionalIdentifier:nil];
+ if (cachedImage) {
+ if (success) {
+ success(urlRequest, nil, cachedImage);
+ } else {
+ [self setBackgroundImage:cachedImage forState:state];
+ }
+ [self af_setBackgroundImageDownloadReceipt:nil forState:state];
+ } else {
+ if (placeholderImage) {
+ [self setBackgroundImage:placeholderImage forState:state];
+ }
+
+ __weak __typeof(self)weakSelf = self;
+ NSUUID *downloadID = [NSUUID UUID];
+ AFImageDownloadReceipt *receipt;
+ receipt = [downloader
+ downloadImageForURLRequest:urlRequest
+ withReceiptID:downloadID
+ success:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, UIImage * _Nonnull responseObject) {
+ __strong __typeof(weakSelf)strongSelf = weakSelf;
+ if ([[strongSelf af_backgroundImageDownloadReceiptForState:state].receiptID isEqual:downloadID]) {
+ if (success) {
+ success(request, response, responseObject);
+ } else if(responseObject) {
+ [strongSelf setBackgroundImage:responseObject forState:state];
+ }
+ [strongSelf af_setBackgroundImageDownloadReceipt:nil forState:state];
+ }
+
+ }
+ failure:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, NSError * _Nonnull error) {
+ __strong __typeof(weakSelf)strongSelf = weakSelf;
+ if ([[strongSelf af_backgroundImageDownloadReceiptForState:state].receiptID isEqual:downloadID]) {
+ if (failure) {
+ failure(request, response, error);
+ }
+ [strongSelf af_setBackgroundImageDownloadReceipt:nil forState:state];
+ }
+ }];
+
+ [self af_setBackgroundImageDownloadReceipt:receipt forState:state];
+ }
+}
+
+#pragma mark -
+
+- (void)cancelImageDownloadTaskForState:(UIControlState)state {
+ AFImageDownloadReceipt *receipt = [self af_imageDownloadReceiptForState:state];
+ if (receipt != nil) {
+ [[self.class sharedImageDownloader] cancelTaskForImageDownloadReceipt:receipt];
+ [self af_setImageDownloadReceipt:nil forState:state];
+ }
+}
+
+- (void)cancelBackgroundImageDownloadTaskForState:(UIControlState)state {
+ AFImageDownloadReceipt *receipt = [self af_backgroundImageDownloadReceiptForState:state];
+ if (receipt != nil) {
+ [[self.class sharedImageDownloader] cancelTaskForImageDownloadReceipt:receipt];
+ [self af_setBackgroundImageDownloadReceipt:nil forState:state];
+ }
+}
+
+- (BOOL)isActiveTaskURLEqualToURLRequest:(NSURLRequest *)urlRequest forState:(UIControlState)state {
+ AFImageDownloadReceipt *receipt = [self af_imageDownloadReceiptForState:state];
+ return [receipt.task.originalRequest.URL.absoluteString isEqualToString:urlRequest.URL.absoluteString];
+}
+
+- (BOOL)isActiveBackgroundTaskURLEqualToURLRequest:(NSURLRequest *)urlRequest forState:(UIControlState)state {
+ AFImageDownloadReceipt *receipt = [self af_backgroundImageDownloadReceiptForState:state];
+ return [receipt.task.originalRequest.URL.absoluteString isEqualToString:urlRequest.URL.absoluteString];
+}
+
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImage+AFNetworking.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImage+AFNetworking.h
new file mode 100755
index 0000000..14744cd
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImage+AFNetworking.h
@@ -0,0 +1,35 @@
+//
+// UIImage+AFNetworking.h
+//
+//
+// Created by Paulo Ferreira on 08/07/15.
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import <UIKit/UIKit.h>
+
+@interface UIImage (AFNetworking)
+
++ (UIImage*) safeImageWithData:(NSData*)data;
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.h
new file mode 100755
index 0000000..8929252
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.h
@@ -0,0 +1,109 @@
+// UIImageView+AFNetworking.h
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class AFImageDownloader;
+
+/**
+ This category adds methods to the UIKit framework's `UIImageView` class. The methods in this category provide support for loading remote images asynchronously from a URL.
+ */
+@interface UIImageView (AFNetworking)
+
+///------------------------------------
+/// @name Accessing the Image Downloader
+///------------------------------------
+
+/**
+ Set the shared image downloader used to download images.
+
+ @param imageDownloader The shared image downloader used to download images.
+ */
++ (void)setSharedImageDownloader:(AFImageDownloader *)imageDownloader;
+
+/**
+ The shared image downloader used to download images.
+ */
++ (AFImageDownloader *)sharedImageDownloader;
+
+///--------------------
+/// @name Setting Image
+///--------------------
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ By default, URL requests have a `Accept` header field value of "image / *", a cache policy of `NSURLCacheStorageAllowed` and a timeout interval of 30 seconds, and are set not handle cookies. To configure URL requests differently, use `setImageWithURLRequest:placeholderImage:success:failure:`
+
+ @param url The URL used for the image request.
+ */
+- (void)setImageWithURL:(NSURL *)url;
+
+/**
+ Asynchronously downloads an image from the specified URL, and sets it once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ By default, URL requests have a `Accept` header field value of "image / *", a cache policy of `NSURLCacheStorageAllowed` and a timeout interval of 30 seconds, and are set not handle cookies. To configure URL requests differently, use `setImageWithURLRequest:placeholderImage:success:failure:`
+
+ @param url The URL used for the image request.
+ @param placeholderImage The image to be set initially, until the image request finishes. If `nil`, the image view will not change its image until the image request finishes.
+ */
+- (void)setImageWithURL:(NSURL *)url
+ placeholderImage:(nullable UIImage *)placeholderImage;
+
+/**
+ Asynchronously downloads an image from the specified URL request, and sets it once the request is finished. Any previous image request for the receiver will be cancelled.
+
+ If the image is cached locally, the image is set immediately, otherwise the specified placeholder image will be set immediately, and then the remote image will be set once the request is finished.
+
+ If a success block is specified, it is the responsibility of the block to set the image of the image view before returning. If no success block is specified, the default behavior of setting the image with `self.image = image` is applied.
+
+ @param urlRequest The URL request used for the image request.
+ @param placeholderImage The image to be set initially, until the image request finishes. If `nil`, the image view will not change its image until the image request finishes.
+ @param success A block to be executed when the image data task finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the image created from the response data of request. If the image was returned from cache, the response parameter will be `nil`.
+ @param failure A block object to be executed when the image data task finishes unsuccessfully, or that finishes successfully. This block has no return value and takes three arguments: the request sent from the client, the response received from the server, and the error object describing the network or parsing error that occurred.
+ */
+- (void)setImageWithURLRequest:(NSURLRequest *)urlRequest
+ placeholderImage:(nullable UIImage *)placeholderImage
+ success:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *image))success
+ failure:(nullable void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure;
+
+/**
+ Cancels any executing image operation for the receiver, if one exists.
+ */
+- (void)cancelImageDownloadTask;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.m b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.m
new file mode 100755
index 0000000..1f0a778
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIImageView+AFNetworking.m
@@ -0,0 +1,157 @@
+// UIImageView+AFNetworking.m
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIImageView+AFNetworking.h"
+
+#import <objc/runtime.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import "AFImageDownloader.h"
+
+@interface UIImageView (_AFNetworking)
+@property (readwrite, nonatomic, strong, setter = af_setActiveImageDownloadReceipt:) AFImageDownloadReceipt *af_activeImageDownloadReceipt;
+@end
+
+@implementation UIImageView (_AFNetworking)
+
+- (AFImageDownloadReceipt *)af_activeImageDownloadReceipt {
+ return (AFImageDownloadReceipt *)objc_getAssociatedObject(self, @selector(af_activeImageDownloadReceipt));
+}
+
+- (void)af_setActiveImageDownloadReceipt:(AFImageDownloadReceipt *)imageDownloadReceipt {
+ objc_setAssociatedObject(self, @selector(af_activeImageDownloadReceipt), imageDownloadReceipt, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+@end
+
+#pragma mark -
+
+@implementation UIImageView (AFNetworking)
+
++ (AFImageDownloader *)sharedImageDownloader {
+ return objc_getAssociatedObject(self, @selector(sharedImageDownloader)) ?: [AFImageDownloader defaultInstance];
+}
+
++ (void)setSharedImageDownloader:(AFImageDownloader *)imageDownloader {
+ objc_setAssociatedObject(self, @selector(sharedImageDownloader), imageDownloader, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+- (void)setImageWithURL:(NSURL *)url {
+ [self setImageWithURL:url placeholderImage:nil];
+}
+
+- (void)setImageWithURL:(NSURL *)url
+ placeholderImage:(UIImage *)placeholderImage
+{
+ NSMutableURLRequest *request = [NSMutableURLRequest requestWithURL:url];
+ [request addValue:@"image/*" forHTTPHeaderField:@"Accept"];
+
+ [self setImageWithURLRequest:request placeholderImage:placeholderImage success:nil failure:nil];
+}
+
+- (void)setImageWithURLRequest:(NSURLRequest *)urlRequest
+ placeholderImage:(UIImage *)placeholderImage
+ success:(void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, UIImage *image))success
+ failure:(void (^)(NSURLRequest *request, NSHTTPURLResponse * _Nullable response, NSError *error))failure
+{
+
+ if ([urlRequest URL] == nil) {
+ [self cancelImageDownloadTask];
+ self.image = placeholderImage;
+ return;
+ }
+
+ if ([self isActiveTaskURLEqualToURLRequest:urlRequest]){
+ return;
+ }
+
+ [self cancelImageDownloadTask];
+
+ AFImageDownloader *downloader = [[self class] sharedImageDownloader];
+ id <AFImageRequestCache> imageCache = downloader.imageCache;
+
+ //Use the image from the image cache if it exists
+ UIImage *cachedImage = [imageCache imageforRequest:urlRequest withAdditionalIdentifier:nil];
+ if (cachedImage) {
+ if (success) {
+ success(urlRequest, nil, cachedImage);
+ } else {
+ self.image = cachedImage;
+ }
+ [self clearActiveDownloadInformation];
+ } else {
+ if (placeholderImage) {
+ self.image = placeholderImage;
+ }
+
+ __weak __typeof(self)weakSelf = self;
+ NSUUID *downloadID = [NSUUID UUID];
+ AFImageDownloadReceipt *receipt;
+ receipt = [downloader
+ downloadImageForURLRequest:urlRequest
+ withReceiptID:downloadID
+ success:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, UIImage * _Nonnull responseObject) {
+ __strong __typeof(weakSelf)strongSelf = weakSelf;
+ if ([strongSelf.af_activeImageDownloadReceipt.receiptID isEqual:downloadID]) {
+ if (success) {
+ success(request, response, responseObject);
+ } else if(responseObject) {
+ strongSelf.image = responseObject;
+ }
+ [strongSelf clearActiveDownloadInformation];
+ }
+
+ }
+ failure:^(NSURLRequest * _Nonnull request, NSHTTPURLResponse * _Nullable response, NSError * _Nonnull error) {
+ __strong __typeof(weakSelf)strongSelf = weakSelf;
+ if ([strongSelf.af_activeImageDownloadReceipt.receiptID isEqual:downloadID]) {
+ if (failure) {
+ failure(request, response, error);
+ }
+ [strongSelf clearActiveDownloadInformation];
+ }
+ }];
+
+ self.af_activeImageDownloadReceipt = receipt;
+ }
+}
+
+- (void)cancelImageDownloadTask {
+ if (self.af_activeImageDownloadReceipt != nil) {
+ [[self.class sharedImageDownloader] cancelTaskForImageDownloadReceipt:self.af_activeImageDownloadReceipt];
+ [self clearActiveDownloadInformation];
+ }
+}
+
+- (void)clearActiveDownloadInformation {
+ self.af_activeImageDownloadReceipt = nil;
+}
+
+- (BOOL)isActiveTaskURLEqualToURLRequest:(NSURLRequest *)urlRequest {
+ return [self.af_activeImageDownloadReceipt.task.originalRequest.URL.absoluteString isEqualToString:urlRequest.URL.absoluteString];
+}
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIKit+AFNetworking.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIKit+AFNetworking.h
new file mode 100755
index 0000000..febacfc
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIKit+AFNetworking.h
@@ -0,0 +1,42 @@
+// UIKit+AFNetworking.h
+//
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+#import <UIKit/UIKit.h>
+
+#ifndef _UIKIT_AFNETWORKING_
+ #define _UIKIT_AFNETWORKING_
+
+#if TARGET_OS_IOS
+ #import "AFAutoPurgingImageCache.h"
+ #import "AFImageDownloader.h"
+ #import "AFNetworkActivityIndicatorManager.h"
+ #import "UIRefreshControl+AFNetworking.h"
+ #import "UIWebView+AFNetworking.h"
+#endif
+
+ #import "UIActivityIndicatorView+AFNetworking.h"
+ #import "UIButton+AFNetworking.h"
+ #import "UIImageView+AFNetworking.h"
+ #import "UIProgressView+AFNetworking.h"
+#endif /* _UIKIT_AFNETWORKING_ */
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.h
new file mode 100755
index 0000000..8ea0a73
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.h
@@ -0,0 +1,64 @@
+// UIProgressView+AFNetworking.h
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+
+/**
+ This category adds methods to the UIKit framework's `UIProgressView` class. The methods in this category provide support for binding the progress to the upload and download progress of a session task.
+ */
+@interface UIProgressView (AFNetworking)
+
+///------------------------------------
+/// @name Setting Session Task Progress
+///------------------------------------
+
+/**
+ Binds the progress to the upload progress of the specified session task.
+
+ @param task The session task.
+ @param animated `YES` if the change should be animated, `NO` if the change should happen immediately.
+ */
+- (void)setProgressWithUploadProgressOfTask:(NSURLSessionUploadTask *)task
+ animated:(BOOL)animated;
+
+/**
+ Binds the progress to the download progress of the specified session task.
+
+ @param task The session task.
+ @param animated `YES` if the change should be animated, `NO` if the change should happen immediately.
+ */
+- (void)setProgressWithDownloadProgressOfTask:(NSURLSessionDownloadTask *)task
+ animated:(BOOL)animated;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.m b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.m
new file mode 100755
index 0000000..058755e
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIProgressView+AFNetworking.m
@@ -0,0 +1,118 @@
+// UIProgressView+AFNetworking.m
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIProgressView+AFNetworking.h"
+
+#import <objc/runtime.h>
+
+#if TARGET_OS_IOS || TARGET_OS_TV
+
+#import "AFURLSessionManager.h"
+
+static void * AFTaskCountOfBytesSentContext = &AFTaskCountOfBytesSentContext;
+static void * AFTaskCountOfBytesReceivedContext = &AFTaskCountOfBytesReceivedContext;
+
+#pragma mark -
+
+@implementation UIProgressView (AFNetworking)
+
+- (BOOL)af_uploadProgressAnimated {
+ return [(NSNumber *)objc_getAssociatedObject(self, @selector(af_uploadProgressAnimated)) boolValue];
+}
+
+- (void)af_setUploadProgressAnimated:(BOOL)animated {
+ objc_setAssociatedObject(self, @selector(af_uploadProgressAnimated), @(animated), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+- (BOOL)af_downloadProgressAnimated {
+ return [(NSNumber *)objc_getAssociatedObject(self, @selector(af_downloadProgressAnimated)) boolValue];
+}
+
+- (void)af_setDownloadProgressAnimated:(BOOL)animated {
+ objc_setAssociatedObject(self, @selector(af_downloadProgressAnimated), @(animated), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+- (void)setProgressWithUploadProgressOfTask:(NSURLSessionUploadTask *)task
+ animated:(BOOL)animated
+{
+ [task addObserver:self forKeyPath:@"state" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesSentContext];
+ [task addObserver:self forKeyPath:@"countOfBytesSent" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesSentContext];
+
+ [self af_setUploadProgressAnimated:animated];
+}
+
+- (void)setProgressWithDownloadProgressOfTask:(NSURLSessionDownloadTask *)task
+ animated:(BOOL)animated
+{
+ [task addObserver:self forKeyPath:@"state" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesReceivedContext];
+ [task addObserver:self forKeyPath:@"countOfBytesReceived" options:(NSKeyValueObservingOptions)0 context:AFTaskCountOfBytesReceivedContext];
+
+ [self af_setDownloadProgressAnimated:animated];
+}
+
+#pragma mark - NSKeyValueObserving
+
+- (void)observeValueForKeyPath:(NSString *)keyPath
+ ofObject:(id)object
+ change:(__unused NSDictionary *)change
+ context:(void *)context
+{
+ if (context == AFTaskCountOfBytesSentContext || context == AFTaskCountOfBytesReceivedContext) {
+ if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesSent))]) {
+ if ([object countOfBytesExpectedToSend] > 0) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [self setProgress:[object countOfBytesSent] / ([object countOfBytesExpectedToSend] * 1.0f) animated:self.af_uploadProgressAnimated];
+ });
+ }
+ }
+
+ if ([keyPath isEqualToString:NSStringFromSelector(@selector(countOfBytesReceived))]) {
+ if ([object countOfBytesExpectedToReceive] > 0) {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [self setProgress:[object countOfBytesReceived] / ([object countOfBytesExpectedToReceive] * 1.0f) animated:self.af_downloadProgressAnimated];
+ });
+ }
+ }
+
+ if ([keyPath isEqualToString:NSStringFromSelector(@selector(state))]) {
+ if ([(NSURLSessionTask *)object state] == NSURLSessionTaskStateCompleted) {
+ @try {
+ [object removeObserver:self forKeyPath:NSStringFromSelector(@selector(state))];
+
+ if (context == AFTaskCountOfBytesSentContext) {
+ [object removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesSent))];
+ }
+
+ if (context == AFTaskCountOfBytesReceivedContext) {
+ [object removeObserver:self forKeyPath:NSStringFromSelector(@selector(countOfBytesReceived))];
+ }
+ }
+ @catch (NSException * __unused exception) {}
+ }
+ }
+ }
+}
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.h
new file mode 100755
index 0000000..215eafc
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.h
@@ -0,0 +1,53 @@
+// UIRefreshControl+AFNetworking.m
+//
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+/**
+ This category adds methods to the UIKit framework's `UIRefreshControl` class. The methods in this category provide support for automatically beginning and ending refreshing depending on the loading state of a session task.
+ */
+@interface UIRefreshControl (AFNetworking)
+
+///-----------------------------------
+/// @name Refreshing for Session Tasks
+///-----------------------------------
+
+/**
+ Binds the refreshing state to the state of the specified task.
+
+ @param task The task. If `nil`, automatic updating from any previously specified operation will be disabled.
+ */
+- (void)setRefreshingWithStateOfTask:(NSURLSessionTask *)task;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.m b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.m
new file mode 100755
index 0000000..cd46916
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIRefreshControl+AFNetworking.m
@@ -0,0 +1,113 @@
+// UIRefreshControl+AFNetworking.m
+//
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIRefreshControl+AFNetworking.h"
+#import <objc/runtime.h>
+
+#if TARGET_OS_IOS
+
+#import "AFURLSessionManager.h"
+
+@interface AFRefreshControlNotificationObserver : NSObject
+@property (readonly, nonatomic, weak) UIRefreshControl *refreshControl;
+- (instancetype)initWithActivityRefreshControl:(UIRefreshControl *)refreshControl;
+
+- (void)setRefreshingWithStateOfTask:(NSURLSessionTask *)task;
+
+@end
+
+@implementation UIRefreshControl (AFNetworking)
+
+- (AFRefreshControlNotificationObserver *)af_notificationObserver {
+ AFRefreshControlNotificationObserver *notificationObserver = objc_getAssociatedObject(self, @selector(af_notificationObserver));
+ if (notificationObserver == nil) {
+ notificationObserver = [[AFRefreshControlNotificationObserver alloc] initWithActivityRefreshControl:self];
+ objc_setAssociatedObject(self, @selector(af_notificationObserver), notificationObserver, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+ }
+ return notificationObserver;
+}
+
+- (void)setRefreshingWithStateOfTask:(NSURLSessionTask *)task {
+ [[self af_notificationObserver] setRefreshingWithStateOfTask:task];
+}
+
+@end
+
+@implementation AFRefreshControlNotificationObserver
+
+- (instancetype)initWithActivityRefreshControl:(UIRefreshControl *)refreshControl
+{
+ self = [super init];
+ if (self) {
+ _refreshControl = refreshControl;
+ }
+ return self;
+}
+
+- (void)setRefreshingWithStateOfTask:(NSURLSessionTask *)task {
+ NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidResumeNotification object:nil];
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidSuspendNotification object:nil];
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidCompleteNotification object:nil];
+
+ if (task) {
+ UIRefreshControl *refreshControl = self.refreshControl;
+ if (task.state == NSURLSessionTaskStateRunning) {
+ [refreshControl beginRefreshing];
+
+ [notificationCenter addObserver:self selector:@selector(af_beginRefreshing) name:AFNetworkingTaskDidResumeNotification object:task];
+ [notificationCenter addObserver:self selector:@selector(af_endRefreshing) name:AFNetworkingTaskDidCompleteNotification object:task];
+ [notificationCenter addObserver:self selector:@selector(af_endRefreshing) name:AFNetworkingTaskDidSuspendNotification object:task];
+ } else {
+ [refreshControl endRefreshing];
+ }
+ }
+}
+
+#pragma mark -
+
+- (void)af_beginRefreshing {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [self.refreshControl beginRefreshing];
+ });
+}
+
+- (void)af_endRefreshing {
+ dispatch_async(dispatch_get_main_queue(), ^{
+ [self.refreshControl endRefreshing];
+ });
+}
+
+#pragma mark -
+
+- (void)dealloc {
+ NSNotificationCenter *notificationCenter = [NSNotificationCenter defaultCenter];
+
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidCompleteNotification object:nil];
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidResumeNotification object:nil];
+ [notificationCenter removeObserver:self name:AFNetworkingTaskDidSuspendNotification object:nil];
+}
+
+@end
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.h b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.h
new file mode 100755
index 0000000..b9a56af
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.h
@@ -0,0 +1,80 @@
+// UIWebView+AFNetworking.h
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import <Foundation/Foundation.h>
+
+#import <TargetConditionals.h>
+
+#if TARGET_OS_IOS
+
+#import <UIKit/UIKit.h>
+
+NS_ASSUME_NONNULL_BEGIN
+
+@class AFHTTPSessionManager;
+
+/**
+ This category adds methods to the UIKit framework's `UIWebView` class. The methods in this category provide increased control over the request cycle, including progress monitoring and success / failure handling.
+
+ @discussion When using these category methods, make sure to assign `delegate` for the web view, which implements `���webView:shouldStartLoadWithRequest:navigationType:` appropriately. This allows for tapped links to be loaded through AFNetworking, and can ensure that `canGoBack` & `canGoForward` update their values correctly.
+ */
+@interface UIWebView (AFNetworking)
+
+/**
+ The session manager used to download all requests.
+ */
+@property (nonatomic, strong) AFHTTPSessionManager *sessionManager;
+
+/**
+ Asynchronously loads the specified request.
+
+ @param request A URL request identifying the location of the content to load. This must not be `nil`.
+ @param progress A progress object monitoring the current download progress.
+ @param success A block object to be executed when the request finishes loading successfully. This block returns the HTML string to be loaded by the web view, and takes two arguments: the response, and the response string.
+ @param failure A block object to be executed when the data task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a single argument: the error that occurred.
+ */
+- (void)loadRequest:(NSURLRequest *)request
+ progress:(NSProgress * _Nullable __autoreleasing * _Nullable)progress
+ success:(nullable NSString * (^)(NSHTTPURLResponse *response, NSString *HTML))success
+ failure:(nullable void (^)(NSError *error))failure;
+
+/**
+ Asynchronously loads the data associated with a particular request with a specified MIME type and text encoding.
+
+ @param request A URL request identifying the location of the content to load. This must not be `nil`.
+ @param MIMEType The MIME type of the content. Defaults to the content type of the response if not specified.
+ @param textEncodingName The IANA encoding name, as in `utf-8` or `utf-16`. Defaults to the response text encoding if not specified.
+@param progress A progress object monitoring the current download progress.
+ @param success A block object to be executed when the request finishes loading successfully. This block returns the data to be loaded by the web view and takes two arguments: the response, and the downloaded data.
+ @param failure A block object to be executed when the data task finishes unsuccessfully, or that finishes successfully, but encountered an error while parsing the response data. This block has no return value and takes a single argument: the error that occurred.
+ */
+- (void)loadRequest:(NSURLRequest *)request
+ MIMEType:(nullable NSString *)MIMEType
+ textEncodingName:(nullable NSString *)textEncodingName
+ progress:(NSProgress * _Nullable __autoreleasing * _Nullable)progress
+ success:(nullable NSData * (^)(NSHTTPURLResponse *response, NSData *data))success
+ failure:(nullable void (^)(NSError *error))failure;
+
+@end
+
+NS_ASSUME_NONNULL_END
+
+#endif
diff --git a/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.m b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.m
new file mode 100755
index 0000000..f8c4222
--- /dev/null
+++ b/SocketDemo/Utils/AFNetworking/UIKit+AFNetworking/UIWebView+AFNetworking.m
@@ -0,0 +1,156 @@
+// UIWebView+AFNetworking.m
+// Copyright (c) 2011���2016 Alamofire Software Foundation ( http://alamofire.org/ )
+//
+// Permission is hereby granted, free of charge, to any person obtaining a copy
+// of this software and associated documentation files (the "Software"), to deal
+// in the Software without restriction, including without limitation the rights
+// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+// copies of the Software, and to permit persons to whom the Software is
+// furnished to do so, subject to the following conditions:
+//
+// The above copyright notice and this permission notice shall be included in
+// all copies or substantial portions of the Software.
+//
+// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+// THE SOFTWARE.
+
+#import "UIWebView+AFNetworking.h"
+
+#import <objc/runtime.h>
+
+#if TARGET_OS_IOS
+
+#import "AFHTTPSessionManager.h"
+#import "AFURLResponseSerialization.h"
+#import "AFURLRequestSerialization.h"
+
+@interface UIWebView (_AFNetworking)
+@property (readwrite, nonatomic, strong, setter = af_setURLSessionTask:) NSURLSessionDataTask *af_URLSessionTask;
+@end
+
+@implementation UIWebView (_AFNetworking)
+
+- (NSURLSessionDataTask *)af_URLSessionTask {
+ return (NSURLSessionDataTask *)objc_getAssociatedObject(self, @selector(af_URLSessionTask));
+}
+
+- (void)af_setURLSessionTask:(NSURLSessionDataTask *)af_URLSessionTask {
+ objc_setAssociatedObject(self, @selector(af_URLSessionTask), af_URLSessionTask, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+@end
+
+#pragma mark -
+
+@implementation UIWebView (AFNetworking)
+
+- (AFHTTPSessionManager *)sessionManager {
+ static AFHTTPSessionManager *_af_defaultHTTPSessionManager = nil;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ _af_defaultHTTPSessionManager = [[AFHTTPSessionManager alloc] initWithSessionConfiguration:[NSURLSessionConfiguration defaultSessionConfiguration]];
+ _af_defaultHTTPSessionManager.requestSerializer = [AFHTTPRequestSerializer serializer];
+ _af_defaultHTTPSessionManager.responseSerializer = [AFHTTPResponseSerializer serializer];
+ });
+
+ return objc_getAssociatedObject(self, @selector(sessionManager)) ?: _af_defaultHTTPSessionManager;
+}
+
+- (void)setSessionManager:(AFHTTPSessionManager *)sessionManager {
+ objc_setAssociatedObject(self, @selector(sessionManager), sessionManager, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+- (AFHTTPResponseSerializer <AFURLResponseSerialization> *)responseSerializer {
+ static AFHTTPResponseSerializer <AFURLResponseSerialization> *_af_defaultResponseSerializer = nil;
+ static dispatch_once_t onceToken;
+ dispatch_once(&onceToken, ^{
+ _af_defaultResponseSerializer = [AFHTTPResponseSerializer serializer];
+ });
+
+ return objc_getAssociatedObject(self, @selector(responseSerializer)) ?: _af_defaultResponseSerializer;
+}
+
+- (void)setResponseSerializer:(AFHTTPResponseSerializer<AFURLResponseSerialization> *)responseSerializer {
+ objc_setAssociatedObject(self, @selector(responseSerializer), responseSerializer, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark -
+
+- (void)loadRequest:(NSURLRequest *)request
+ progress:(NSProgress * _Nullable __autoreleasing * _Nullable)progress
+ success:(NSString * (^)(NSHTTPURLResponse *response, NSString *HTML))success
+ failure:(void (^)(NSError *error))failure
+{
+ [self loadRequest:request MIMEType:nil textEncodingName:nil progress:progress success:^NSData *(NSHTTPURLResponse *response, NSData *data) {
+ NSStringEncoding stringEncoding = NSUTF8StringEncoding;
+ if (response.textEncodingName) {
+ CFStringEncoding encoding = CFStringConvertIANACharSetNameToEncoding((CFStringRef)response.textEncodingName);
+ if (encoding != kCFStringEncodingInvalidId) {
+ stringEncoding = CFStringConvertEncodingToNSStringEncoding(encoding);
+ }
+ }
+
+ NSString *string = [[NSString alloc] initWithData:data encoding:stringEncoding];
+ if (success) {
+ string = success(response, string);
+ }
+
+ return [string dataUsingEncoding:stringEncoding];
+ } failure:failure];
+}
+
+- (void)loadRequest:(NSURLRequest *)request
+ MIMEType:(NSString *)MIMEType
+ textEncodingName:(NSString *)textEncodingName
+ progress:(NSProgress * _Nullable __autoreleasing * _Nullable)progress
+ success:(NSData * (^)(NSHTTPURLResponse *response, NSData *data))success
+ failure:(void (^)(NSError *error))failure
+{
+ NSParameterAssert(request);
+
+ if (self.af_URLSessionTask.state == NSURLSessionTaskStateRunning || self.af_URLSessionTask.state == NSURLSessionTaskStateSuspended) {
+ [self.af_URLSessionTask cancel];
+ }
+ self.af_URLSessionTask = nil;
+
+ __weak __typeof(self)weakSelf = self;
+ NSURLSessionDataTask *dataTask;
+ dataTask = [self.sessionManager
+ GET:request.URL.absoluteString
+ parameters:nil
+ progress:nil
+ success:^(NSURLSessionDataTask * _Nonnull task, id _Nonnull responseObject) {
+ __strong __typeof(weakSelf) strongSelf = weakSelf;
+ if (success) {
+ success((NSHTTPURLResponse *)task.response, responseObject);
+ }
+ [strongSelf loadData:responseObject MIMEType:MIMEType textEncodingName:textEncodingName baseURL:[task.currentRequest URL]];
+
+ if ([strongSelf.delegate respondsToSelector:@selector(webViewDidStartLoad:)]) {
+ [strongSelf.delegate webViewDidFinishLoad:strongSelf];
+ }
+ }
+ failure:^(NSURLSessionDataTask * _Nonnull task, NSError * _Nonnull error) {
+ if (failure) {
+ failure(error);
+ }
+ }];
+ self.af_URLSessionTask = dataTask;
+ if (progress != nil) {
+ *progress = [self.sessionManager downloadProgressForTask:dataTask];
+ }
+ [self.af_URLSessionTask resume];
+
+ if ([self.delegate respondsToSelector:@selector(webViewDidStartLoad:)]) {
+ [self.delegate webViewDidStartLoad:self];
+ }
+}
+
+@end
+
+#endif
\ No newline at end of file
diff --git a/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncSocket.h b/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncSocket.h
new file mode 100755
index 0000000..828951f
--- /dev/null
+++ b/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncSocket.h
@@ -0,0 +1,1210 @@
+//
+// GCDAsyncSocket.h
+//
+// This class is in the public domain.
+// Originally created by Robbie Hanson in Q3 2010.
+// Updated and maintained by Deusty LLC and the Apple development community.
+//
+// https://github.com/robbiehanson/CocoaAsyncSocket
+//
+
+#import <Foundation/Foundation.h>
+#import <Security/Security.h>
+#import <Security/SecureTransport.h>
+#import <dispatch/dispatch.h>
+#import <Availability.h>
+
+#include <sys/socket.h> // AF_INET, AF_INET6
+
+@class GCDAsyncReadPacket;
+@class GCDAsyncWritePacket;
+@class GCDAsyncSocketPreBuffer;
+@protocol GCDAsyncSocketDelegate;
+
+NS_ASSUME_NONNULL_BEGIN
+
+extern NSString *const GCDAsyncSocketException;
+extern NSString *const GCDAsyncSocketErrorDomain;
+
+extern NSString *const GCDAsyncSocketQueueName;
+extern NSString *const GCDAsyncSocketThreadName;
+
+extern NSString *const GCDAsyncSocketManuallyEvaluateTrust;
+#if TARGET_OS_IPHONE
+extern NSString *const GCDAsyncSocketUseCFStreamForTLS;
+#endif
+#define GCDAsyncSocketSSLPeerName (NSString *)kCFStreamSSLPeerName
+#define GCDAsyncSocketSSLCertificates (NSString *)kCFStreamSSLCertificates
+#define GCDAsyncSocketSSLIsServer (NSString *)kCFStreamSSLIsServer
+extern NSString *const GCDAsyncSocketSSLPeerID;
+extern NSString *const GCDAsyncSocketSSLProtocolVersionMin;
+extern NSString *const GCDAsyncSocketSSLProtocolVersionMax;
+extern NSString *const GCDAsyncSocketSSLSessionOptionFalseStart;
+extern NSString *const GCDAsyncSocketSSLSessionOptionSendOneByteRecord;
+extern NSString *const GCDAsyncSocketSSLCipherSuites;
+#if !TARGET_OS_IPHONE
+extern NSString *const GCDAsyncSocketSSLDiffieHellmanParameters;
+#endif
+
+#define GCDAsyncSocketLoggingContext 65535
+
+
+typedef NS_ENUM(NSInteger, GCDAsyncSocketError) {
+ GCDAsyncSocketNoError = 0, // Never used
+ GCDAsyncSocketBadConfigError, // Invalid configuration
+ GCDAsyncSocketBadParamError, // Invalid parameter was passed
+ GCDAsyncSocketConnectTimeoutError, // A connect operation timed out
+ GCDAsyncSocketReadTimeoutError, // A read operation timed out
+ GCDAsyncSocketWriteTimeoutError, // A write operation timed out
+ GCDAsyncSocketReadMaxedOutError, // Reached set maxLength without completing
+ GCDAsyncSocketClosedError, // The remote peer closed the connection
+ GCDAsyncSocketOtherError, // Description provided in userInfo
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+
+@interface GCDAsyncSocket : NSObject
+
+/**
+ * GCDAsyncSocket uses the standard delegate paradigm,
+ * but executes all delegate callbacks on a given delegate dispatch queue.
+ * This allows for maximum concurrency, while at the same time providing easy thread safety.
+ *
+ * You MUST set a delegate AND delegate dispatch queue before attempting to
+ * use the socket, or you will get an error.
+ *
+ * The socket queue is optional.
+ * If you pass NULL, GCDAsyncSocket will automatically create it's own socket queue.
+ * If you choose to provide a socket queue, the socket queue must not be a concurrent queue.
+ * If you choose to provide a socket queue, and the socket queue has a configured target queue,
+ * then please see the discussion for the method markSocketQueueTargetQueue.
+ *
+ * The delegate queue and socket queue can optionally be the same.
+**/
+- (instancetype)init;
+- (instancetype)initWithSocketQueue:(nullable dispatch_queue_t)sq;
+- (instancetype)initWithDelegate:(nullable id<GCDAsyncSocketDelegate>)aDelegate delegateQueue:(nullable dispatch_queue_t)dq;
+- (instancetype)initWithDelegate:(nullable id<GCDAsyncSocketDelegate>)aDelegate delegateQueue:(nullable dispatch_queue_t)dq socketQueue:(nullable dispatch_queue_t)sq;
+
+#pragma mark Configuration
+
+@property (atomic, weak, readwrite, nullable) id<GCDAsyncSocketDelegate> delegate;
+#if OS_OBJECT_USE_OBJC
+@property (atomic, strong, readwrite, nullable) dispatch_queue_t delegateQueue;
+#else
+@property (atomic, assign, readwrite, nullable) dispatch_queue_t delegateQueue;
+#endif
+
+- (void)getDelegate:(id<GCDAsyncSocketDelegate> __nullable * __nullable)delegatePtr delegateQueue:(dispatch_queue_t __nullable * __nullable)delegateQueuePtr;
+- (void)setDelegate:(nullable id<GCDAsyncSocketDelegate>)delegate delegateQueue:(nullable dispatch_queue_t)delegateQueue;
+
+/**
+ * If you are setting the delegate to nil within the delegate's dealloc method,
+ * you may need to use the synchronous versions below.
+**/
+- (void)synchronouslySetDelegate:(nullable id<GCDAsyncSocketDelegate>)delegate;
+- (void)synchronouslySetDelegateQueue:(nullable dispatch_queue_t)delegateQueue;
+- (void)synchronouslySetDelegate:(nullable id<GCDAsyncSocketDelegate>)delegate delegateQueue:(nullable dispatch_queue_t)delegateQueue;
+
+/**
+ * By default, both IPv4 and IPv6 are enabled.
+ *
+ * For accepting incoming connections, this means GCDAsyncSocket automatically supports both protocols,
+ * and can simulataneously accept incoming connections on either protocol.
+ *
+ * For outgoing connections, this means GCDAsyncSocket can connect to remote hosts running either protocol.
+ * If a DNS lookup returns only IPv4 results, GCDAsyncSocket will automatically use IPv4.
+ * If a DNS lookup returns only IPv6 results, GCDAsyncSocket will automatically use IPv6.
+ * If a DNS lookup returns both IPv4 and IPv6 results, the preferred protocol will be chosen.
+ * By default, the preferred protocol is IPv4, but may be configured as desired.
+**/
+
+@property (atomic, assign, readwrite, getter=isIPv4Enabled) BOOL IPv4Enabled;
+@property (atomic, assign, readwrite, getter=isIPv6Enabled) BOOL IPv6Enabled;
+
+@property (atomic, assign, readwrite, getter=isIPv4PreferredOverIPv6) BOOL IPv4PreferredOverIPv6;
+
+/**
+ * When connecting to both IPv4 and IPv6 using Happy Eyeballs (RFC 6555) https://tools.ietf.org/html/rfc6555
+ * this is the delay between connecting to the preferred protocol and the fallback protocol.
+ *
+ * Defaults to 300ms.
+**/
+@property (atomic, assign, readwrite) NSTimeInterval alternateAddressDelay;
+
+/**
+ * User data allows you to associate arbitrary information with the socket.
+ * This data is not used internally by socket in any way.
+**/
+@property (atomic, strong, readwrite, nullable) id userData;
+
+#pragma mark Accepting
+
+/**
+ * Tells the socket to begin listening and accepting connections on the given port.
+ * When a connection is accepted, a new instance of GCDAsyncSocket will be spawned to handle it,
+ * and the socket:didAcceptNewSocket: delegate method will be invoked.
+ *
+ * The socket will listen on all available interfaces (e.g. wifi, ethernet, etc)
+**/
+- (BOOL)acceptOnPort:(uint16_t)port error:(NSError **)errPtr;
+
+/**
+ * This method is the same as acceptOnPort:error: with the
+ * additional option of specifying which interface to listen on.
+ *
+ * For example, you could specify that the socket should only accept connections over ethernet,
+ * and not other interfaces such as wifi.
+ *
+ * The interface may be specified by name (e.g. "en1" or "lo0") or by IP address (e.g. "192.168.4.34").
+ * You may also use the special strings "localhost" or "loopback" to specify that
+ * the socket only accept connections from the local machine.
+ *
+ * You can see the list of interfaces via the command line utility "ifconfig",
+ * or programmatically via the getifaddrs() function.
+ *
+ * To accept connections on any interface pass nil, or simply use the acceptOnPort:error: method.
+**/
+- (BOOL)acceptOnInterface:(nullable NSString *)interface port:(uint16_t)port error:(NSError **)errPtr;
+
+/**
+ * Tells the socket to begin listening and accepting connections on the unix domain at the given url.
+ * When a connection is accepted, a new instance of GCDAsyncSocket will be spawned to handle it,
+ * and the socket:didAcceptNewSocket: delegate method will be invoked.
+ *
+ * The socket will listen on all available interfaces (e.g. wifi, ethernet, etc)
+ **/
+- (BOOL)acceptOnUrl:(NSURL *)url error:(NSError **)errPtr;
+
+#pragma mark Connecting
+
+/**
+ * Connects to the given host and port.
+ *
+ * This method invokes connectToHost:onPort:viaInterface:withTimeout:error:
+ * and uses the default interface, and no timeout.
+**/
+- (BOOL)connectToHost:(NSString *)host onPort:(uint16_t)port error:(NSError **)errPtr;
+
+/**
+ * Connects to the given host and port with an optional timeout.
+ *
+ * This method invokes connectToHost:onPort:viaInterface:withTimeout:error: and uses the default interface.
+**/
+- (BOOL)connectToHost:(NSString *)host
+ onPort:(uint16_t)port
+ withTimeout:(NSTimeInterval)timeout
+ error:(NSError **)errPtr;
+
+/**
+ * Connects to the given host & port, via the optional interface, with an optional timeout.
+ *
+ * The host may be a domain name (e.g. "deusty.com") or an IP address string (e.g. "192.168.0.2").
+ * The host may also be the special strings "localhost" or "loopback" to specify connecting
+ * to a service on the local machine.
+ *
+ * The interface may be a name (e.g. "en1" or "lo0") or the corresponding IP address (e.g. "192.168.4.35").
+ * The interface may also be used to specify the local port (see below).
+ *
+ * To not time out use a negative time interval.
+ *
+ * This method will return NO if an error is detected, and set the error pointer (if one was given).
+ * Possible errors would be a nil host, invalid interface, or socket is already connected.
+ *
+ * If no errors are detected, this method will start a background connect operation and immediately return YES.
+ * The delegate callbacks are used to notify you when the socket connects, or if the host was unreachable.
+ *
+ * Since this class supports queued reads and writes, you can immediately start reading and/or writing.
+ * All read/write operations will be queued, and upon socket connection,
+ * the operations will be dequeued and processed in order.
+ *
+ * The interface may optionally contain a port number at the end of the string, separated by a colon.
+ * This allows you to specify the local port that should be used for the outgoing connection. (read paragraph to end)
+ * To specify both interface and local port: "en1:8082" or "192.168.4.35:2424".
+ * To specify only local port: ":8082".
+ * Please note this is an advanced feature, and is somewhat hidden on purpose.
+ * You should understand that 99.999% of the time you should NOT specify the local port for an outgoing connection.
+ * If you think you need to, there is a very good chance you have a fundamental misunderstanding somewhere.
+ * Local ports do NOT need to match remote ports. In fact, they almost never do.
+ * This feature is here for networking professionals using very advanced techniques.
+**/
+- (BOOL)connectToHost:(NSString *)host
+ onPort:(uint16_t)port
+ viaInterface:(nullable NSString *)interface
+ withTimeout:(NSTimeInterval)timeout
+ error:(NSError **)errPtr;
+
+/**
+ * Connects to the given address, specified as a sockaddr structure wrapped in a NSData object.
+ * For example, a NSData object returned from NSNetService's addresses method.
+ *
+ * If you have an existing struct sockaddr you can convert it to a NSData object like so:
+ * struct sockaddr sa -> NSData *dsa = [NSData dataWithBytes:&remoteAddr length:remoteAddr.sa_len];
+ * struct sockaddr *sa -> NSData *dsa = [NSData dataWithBytes:remoteAddr length:remoteAddr->sa_len];
+ *
+ * This method invokes connectToAdd
+**/
+- (BOOL)connectToAddress:(NSData *)remoteAddr error:(NSError **)errPtr;
+
+/**
+ * This method is the same as connectToAddress:error: with an additional timeout option.
+ * To not time out use a negative time interval, or simply use the connectToAddress:error: method.
+**/
+- (BOOL)connectToAddress:(NSData *)remoteAddr withTimeout:(NSTimeInterval)timeout error:(NSError **)errPtr;
+
+/**
+ * Connects to the given address, using the specified interface and timeout.
+ *
+ * The address is specified as a sockaddr structure wrapped in a NSData object.
+ * For example, a NSData object returned from NSNetService's addresses method.
+ *
+ * If you have an existing struct sockaddr you can convert it to a NSData object like so:
+ * struct sockaddr sa -> NSData *dsa = [NSData dataWithBytes:&remoteAddr length:remoteAddr.sa_len];
+ * struct sockaddr *sa -> NSData *dsa = [NSData dataWithBytes:remoteAddr length:remoteAddr->sa_len];
+ *
+ * The interface may be a name (e.g. "en1" or "lo0") or the corresponding IP address (e.g. "192.168.4.35").
+ * The interface may also be used to specify the local port (see below).
+ *
+ * The timeout is optional. To not time out use a negative time interval.
+ *
+ * This method will return NO if an error is detected, and set the error pointer (if one was given).
+ * Possible errors would be a nil host, invalid interface, or socket is already connected.
+ *
+ * If no errors are detected, this method will start a background connect operation and immediately return YES.
+ * The delegate callbacks are used to notify you when the socket connects, or if the host was unreachable.
+ *
+ * Since this class supports queued reads and writes, you can immediately start reading and/or writing.
+ * All read/write operations will be queued, and upon socket connection,
+ * the operations will be dequeued and processed in order.
+ *
+ * The interface may optionally contain a port number at the end of the string, separated by a colon.
+ * This allows you to specify the local port that should be used for the outgoing connection. (read paragraph to end)
+ * To specify both interface and local port: "en1:8082" or "192.168.4.35:2424".
+ * To specify only local port: ":8082".
+ * Please note this is an advanced feature, and is somewhat hidden on purpose.
+ * You should understand that 99.999% of the time you should NOT specify the local port for an outgoing connection.
+ * If you think you need to, there is a very good chance you have a fundamental misunderstanding somewhere.
+ * Local ports do NOT need to match remote ports. In fact, they almost never do.
+ * This feature is here for networking professionals using very advanced techniques.
+**/
+- (BOOL)connectToAddress:(NSData *)remoteAddr
+ viaInterface:(nullable NSString *)interface
+ withTimeout:(NSTimeInterval)timeout
+ error:(NSError **)errPtr;
+/**
+ * Connects to the unix domain socket at the given url, using the specified timeout.
+ */
+- (BOOL)connectToUrl:(NSURL *)url withTimeout:(NSTimeInterval)timeout error:(NSError **)errPtr;
+
+#pragma mark Disconnecting
+
+/**
+ * Disconnects immediately (synchronously). Any pending reads or writes are dropped.
+ *
+ * If the socket is not already disconnected, an invocation to the socketDidDisconnect:withError: delegate method
+ * will be queued onto the delegateQueue asynchronously (behind any previously queued delegate methods).
+ * In other words, the disconnected delegate method will be invoked sometime shortly after this method returns.
+ *
+ * Please note the recommended way of releasing a GCDAsyncSocket instance (e.g. in a dealloc method)
+ * [asyncSocket setDelegate:nil];
+ * [asyncSocket disconnect];
+ * [asyncSocket release];
+ *
+ * If you plan on disconnecting the socket, and then immediately asking it to connect again,
+ * you'll likely want to do so like this:
+ * [asyncSocket setDelegate:nil];
+ * [asyncSocket disconnect];
+ * [asyncSocket setDelegate:self];
+ * [asyncSocket connect...];
+**/
+- (void)disconnect;
+
+/**
+ * Disconnects after all pending reads have completed.
+ * After calling this, the read and write methods will do nothing.
+ * The socket will disconnect even if there are still pending writes.
+**/
+- (void)disconnectAfterReading;
+
+/**
+ * Disconnects after all pending writes have completed.
+ * After calling this, the read and write methods will do nothing.
+ * The socket will disconnect even if there are still pending reads.
+**/
+- (void)disconnectAfterWriting;
+
+/**
+ * Disconnects after all pending reads and writes have completed.
+ * After calling this, the read and write methods will do nothing.
+**/
+- (void)disconnectAfterReadingAndWriting;
+
+#pragma mark Diagnostics
+
+/**
+ * Returns whether the socket is disconnected or connected.
+ *
+ * A disconnected socket may be recycled.
+ * That is, it can used again for connecting or listening.
+ *
+ * If a socket is in the process of connecting, it may be neither disconnected nor connected.
+**/
+@property (atomic, readonly) BOOL isDisconnected;
+@property (atomic, readonly) BOOL isConnected;
+
+/**
+ * Returns the local or remote host and port to which this socket is connected, or nil and 0 if not connected.
+ * The host will be an IP address.
+**/
+@property (atomic, readonly, nullable) NSString *connectedHost;
+@property (atomic, readonly) uint16_t connectedPort;
+@property (atomic, readonly, nullable) NSURL *connectedUrl;
+
+@property (atomic, readonly, nullable) NSString *localHost;
+@property (atomic, readonly) uint16_t localPort;
+
+/**
+ * Returns the local or remote address to which this socket is connected,
+ * specified as a sockaddr structure wrapped in a NSData object.
+ *
+ * @seealso connectedHost
+ * @seealso connectedPort
+ * @seealso localHost
+ * @seealso localPort
+**/
+@property (atomic, readonly, nullable) NSData *connectedAddress;
+@property (atomic, readonly, nullable) NSData *localAddress;
+
+/**
+ * Returns whether the socket is IPv4 or IPv6.
+ * An accepting socket may be both.
+**/
+@property (atomic, readonly) BOOL isIPv4;
+@property (atomic, readonly) BOOL isIPv6;
+
+/**
+ * Returns whether or not the socket has been secured via SSL/TLS.
+ *
+ * See also the startTLS method.
+**/
+@property (atomic, readonly) BOOL isSecure;
+
+#pragma mark Reading
+
+// The readData and writeData methods won't block (they are asynchronous).
+//
+// When a read is complete the socket:didReadData:withTag: delegate method is dispatched on the delegateQueue.
+// When a write is complete the socket:didWriteDataWithTag: delegate method is dispatched on the delegateQueue.
+//
+// You may optionally set a timeout for any read/write operation. (To not timeout, use a negative time interval.)
+// If a read/write opertion times out, the corresponding "socket:shouldTimeout..." delegate method
+// is called to optionally allow you to extend the timeout.
+// Upon a timeout, the "socket:didDisconnectWithError:" method is called
+//
+// The tag is for your convenience.
+// You can use it as an array index, step number, state id, pointer, etc.
+
+/**
+ * Reads the first available bytes that become available on the socket.
+ *
+ * If the timeout value is negative, the read operation will not use a timeout.
+**/
+- (void)readDataWithTimeout:(NSTimeInterval)timeout tag:(long)tag;
+
+/**
+ * Reads the first available bytes that become available on the socket.
+ * The bytes will be appended to the given byte buffer starting at the given offset.
+ * The given buffer will automatically be increased in size if needed.
+ *
+ * If the timeout value is negative, the read operation will not use a timeout.
+ * If the buffer if nil, the socket will create a buffer for you.
+ *
+ * If the bufferOffset is greater than the length of the given buffer,
+ * the method will do nothing, and the delegate will not be called.
+ *
+ * If you pass a buffer, you must not alter it in any way while the socket is using it.
+ * After completion, the data returned in socket:didReadData:withTag: will be a subset of the given buffer.
+ * That is, it will reference the bytes that were appended to the given buffer via
+ * the method [NSData dataWithBytesNoCopy:length:freeWhenDone:NO].
+**/
+- (void)readDataWithTimeout:(NSTimeInterval)timeout
+ buffer:(nullable NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ tag:(long)tag;
+
+/**
+ * Reads the first available bytes that become available on the socket.
+ * The bytes will be appended to the given byte buffer starting at the given offset.
+ * The given buffer will automatically be increased in size if needed.
+ * A maximum of length bytes will be read.
+ *
+ * If the timeout value is negative, the read operation will not use a timeout.
+ * If the buffer if nil, a buffer will automatically be created for you.
+ * If maxLength is zero, no length restriction is enforced.
+ *
+ * If the bufferOffset is greater than the length of the given buffer,
+ * the method will do nothing, and the delegate will not be called.
+ *
+ * If you pass a buffer, you must not alter it in any way while the socket is using it.
+ * After completion, the data returned in socket:didReadData:withTag: will be a subset of the given buffer.
+ * That is, it will reference the bytes that were appended to the given buffer via
+ * the method [NSData dataWithBytesNoCopy:length:freeWhenDone:NO].
+**/
+- (void)readDataWithTimeout:(NSTimeInterval)timeout
+ buffer:(nullable NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ maxLength:(NSUInteger)length
+ tag:(long)tag;
+
+/**
+ * Reads the given number of bytes.
+ *
+ * If the timeout value is negative, the read operation will not use a timeout.
+ *
+ * If the length is 0, this method does nothing and the delegate is not called.
+**/
+- (void)readDataToLength:(NSUInteger)length withTimeout:(NSTimeInterval)timeout tag:(long)tag;
+
+/**
+ * Reads the given number of bytes.
+ * The bytes will be appended to the given byte buffer starting at the given offset.
+ * The given buffer will automatically be increased in size if needed.
+ *
+ * If the timeout value is negative, the read operation will not use a timeout.
+ * If the buffer if nil, a buffer will automatically be created for you.
+ *
+ * If the length is 0, this method does nothing and the delegate is not called.
+ * If the bufferOffset is greater than the length of the given buffer,
+ * the method will do nothing, and the delegate will not be called.
+ *
+ * If you pass a buffer, you must not alter it in any way while AsyncSocket is using it.
+ * After completion, the data returned in socket:didReadData:withTag: will be a subset of the given buffer.
+ * That is, it will reference the bytes that were appended to the given buffer via
+ * the method [NSData dataWithBytesNoCopy:length:freeWhenDone:NO].
+**/
+- (void)readDataToLength:(NSUInteger)length
+ withTimeout:(NSTimeInterval)timeout
+ buffer:(nullable NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ tag:(long)tag;
+
+/**
+ * Reads bytes until (and including) the passed "data" parameter, which acts as a separator.
+ *
+ * If the timeout value is negative, the read operation will not use a timeout.
+ *
+ * If you pass nil or zero-length data as the "data" parameter,
+ * the method will do nothing (except maybe print a warning), and the delegate will not be called.
+ *
+ * To read a line from the socket, use the line separator (e.g. CRLF for HTTP, see below) as the "data" parameter.
+ * If you're developing your own custom protocol, be sure your separator can not occur naturally as
+ * part of the data between separators.
+ * For example, imagine you want to send several small documents over a socket.
+ * Using CRLF as a separator is likely unwise, as a CRLF could easily exist within the documents.
+ * In this particular example, it would be better to use a protocol similar to HTTP with
+ * a header that includes the length of the document.
+ * Also be careful that your separator cannot occur naturally as part of the encoding for a character.
+ *
+ * The given data (separator) parameter should be immutable.
+ * For performance reasons, the socket will retain it, not copy it.
+ * So if it is immutable, don't modify it while the socket is using it.
+**/
+- (void)readDataToData:(NSData *)data withTimeout:(NSTimeInterval)timeout tag:(long)tag;
+
+/**
+ * Reads bytes until (and including) the passed "data" parameter, which acts as a separator.
+ * The bytes will be appended to the given byte buffer starting at the given offset.
+ * The given buffer will automatically be increased in size if needed.
+ *
+ * If the timeout value is negative, the read operation will not use a timeout.
+ * If the buffer if nil, a buffer will automatically be created for you.
+ *
+ * If the bufferOffset is greater than the length of the given buffer,
+ * the method will do nothing (except maybe print a warning), and the delegate will not be called.
+ *
+ * If you pass a buffer, you must not alter it in any way while the socket is using it.
+ * After completion, the data returned in socket:didReadData:withTag: will be a subset of the given buffer.
+ * That is, it will reference the bytes that were appended to the given buffer via
+ * the method [NSData dataWithBytesNoCopy:length:freeWhenDone:NO].
+ *
+ * To read a line from the socket, use the line separator (e.g. CRLF for HTTP, see below) as the "data" parameter.
+ * If you're developing your own custom protocol, be sure your separator can not occur naturally as
+ * part of the data between separators.
+ * For example, imagine you want to send several small documents over a socket.
+ * Using CRLF as a separator is likely unwise, as a CRLF could easily exist within the documents.
+ * In this particular example, it would be better to use a protocol similar to HTTP with
+ * a header that includes the length of the document.
+ * Also be careful that your separator cannot occur naturally as part of the encoding for a character.
+ *
+ * The given data (separator) parameter should be immutable.
+ * For performance reasons, the socket will retain it, not copy it.
+ * So if it is immutable, don't modify it while the socket is using it.
+**/
+- (void)readDataToData:(NSData *)data
+ withTimeout:(NSTimeInterval)timeout
+ buffer:(nullable NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ tag:(long)tag;
+
+/**
+ * Reads bytes until (and including) the passed "data" parameter, which acts as a separator.
+ *
+ * If the timeout value is negative, the read operation will not use a timeout.
+ *
+ * If maxLength is zero, no length restriction is enforced.
+ * Otherwise if maxLength bytes are read without completing the read,
+ * it is treated similarly to a timeout - the socket is closed with a GCDAsyncSocketReadMaxedOutError.
+ * The read will complete successfully if exactly maxLength bytes are read and the given data is found at the end.
+ *
+ * If you pass nil or zero-length data as the "data" parameter,
+ * the method will do nothing (except maybe print a warning), and the delegate will not be called.
+ * If you pass a maxLength parameter that is less than the length of the data parameter,
+ * the method will do nothing (except maybe print a warning), and the delegate will not be called.
+ *
+ * To read a line from the socket, use the line separator (e.g. CRLF for HTTP, see below) as the "data" parameter.
+ * If you're developing your own custom protocol, be sure your separator can not occur naturally as
+ * part of the data between separators.
+ * For example, imagine you want to send several small documents over a socket.
+ * Using CRLF as a separator is likely unwise, as a CRLF could easily exist within the documents.
+ * In this particular example, it would be better to use a protocol similar to HTTP with
+ * a header that includes the length of the document.
+ * Also be careful that your separator cannot occur naturally as part of the encoding for a character.
+ *
+ * The given data (separator) parameter should be immutable.
+ * For performance reasons, the socket will retain it, not copy it.
+ * So if it is immutable, don't modify it while the socket is using it.
+**/
+- (void)readDataToData:(NSData *)data withTimeout:(NSTimeInterval)timeout maxLength:(NSUInteger)length tag:(long)tag;
+
+/**
+ * Reads bytes until (and including) the passed "data" parameter, which acts as a separator.
+ * The bytes will be appended to the given byte buffer starting at the given offset.
+ * The given buffer will automatically be increased in size if needed.
+ *
+ * If the timeout value is negative, the read operation will not use a timeout.
+ * If the buffer if nil, a buffer will automatically be created for you.
+ *
+ * If maxLength is zero, no length restriction is enforced.
+ * Otherwise if maxLength bytes are read without completing the read,
+ * it is treated similarly to a timeout - the socket is closed with a GCDAsyncSocketReadMaxedOutError.
+ * The read will complete successfully if exactly maxLength bytes are read and the given data is found at the end.
+ *
+ * If you pass a maxLength parameter that is less than the length of the data (separator) parameter,
+ * the method will do nothing (except maybe print a warning), and the delegate will not be called.
+ * If the bufferOffset is greater than the length of the given buffer,
+ * the method will do nothing (except maybe print a warning), and the delegate will not be called.
+ *
+ * If you pass a buffer, you must not alter it in any way while the socket is using it.
+ * After completion, the data returned in socket:didReadData:withTag: will be a subset of the given buffer.
+ * That is, it will reference the bytes that were appended to the given buffer via
+ * the method [NSData dataWithBytesNoCopy:length:freeWhenDone:NO].
+ *
+ * To read a line from the socket, use the line separator (e.g. CRLF for HTTP, see below) as the "data" parameter.
+ * If you're developing your own custom protocol, be sure your separator can not occur naturally as
+ * part of the data between separators.
+ * For example, imagine you want to send several small documents over a socket.
+ * Using CRLF as a separator is likely unwise, as a CRLF could easily exist within the documents.
+ * In this particular example, it would be better to use a protocol similar to HTTP with
+ * a header that includes the length of the document.
+ * Also be careful that your separator cannot occur naturally as part of the encoding for a character.
+ *
+ * The given data (separator) parameter should be immutable.
+ * For performance reasons, the socket will retain it, not copy it.
+ * So if it is immutable, don't modify it while the socket is using it.
+**/
+- (void)readDataToData:(NSData *)data
+ withTimeout:(NSTimeInterval)timeout
+ buffer:(nullable NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ maxLength:(NSUInteger)length
+ tag:(long)tag;
+
+/**
+ * Returns progress of the current read, from 0.0 to 1.0, or NaN if no current read (use isnan() to check).
+ * The parameters "tag", "done" and "total" will be filled in if they aren't NULL.
+**/
+- (float)progressOfReadReturningTag:(nullable long *)tagPtr bytesDone:(nullable NSUInteger *)donePtr total:(nullable NSUInteger *)totalPtr;
+
+#pragma mark Writing
+
+/**
+ * Writes data to the socket, and calls the delegate when finished.
+ *
+ * If you pass in nil or zero-length data, this method does nothing and the delegate will not be called.
+ * If the timeout value is negative, the write operation will not use a timeout.
+ *
+ * Thread-Safety Note:
+ * If the given data parameter is mutable (NSMutableData) then you MUST NOT alter the data while
+ * the socket is writing it. In other words, it's not safe to alter the data until after the delegate method
+ * socket:didWriteDataWithTag: is invoked signifying that this particular write operation has completed.
+ * This is due to the fact that GCDAsyncSocket does NOT copy the data. It simply retains it.
+ * This is for performance reasons. Often times, if NSMutableData is passed, it is because
+ * a request/response was built up in memory. Copying this data adds an unwanted/unneeded overhead.
+ * If you need to write data from an immutable buffer, and you need to alter the buffer before the socket
+ * completes writing the bytes (which is NOT immediately after this method returns, but rather at a later time
+ * when the delegate method notifies you), then you should first copy the bytes, and pass the copy to this method.
+**/
+- (void)writeData:(NSData *)data withTimeout:(NSTimeInterval)timeout tag:(long)tag;
+
+/**
+ * Returns progress of the current write, from 0.0 to 1.0, or NaN if no current write (use isnan() to check).
+ * The parameters "tag", "done" and "total" will be filled in if they aren't NULL.
+**/
+- (float)progressOfWriteReturningTag:(nullable long *)tagPtr bytesDone:(nullable NSUInteger *)donePtr total:(nullable NSUInteger *)totalPtr;
+
+#pragma mark Security
+
+/**
+ * Secures the connection using SSL/TLS.
+ *
+ * This method may be called at any time, and the TLS handshake will occur after all pending reads and writes
+ * are finished. This allows one the option of sending a protocol dependent StartTLS message, and queuing
+ * the upgrade to TLS at the same time, without having to wait for the write to finish.
+ * Any reads or writes scheduled after this method is called will occur over the secured connection.
+ *
+ * ==== The available TOP-LEVEL KEYS are:
+ *
+ * - GCDAsyncSocketManuallyEvaluateTrust
+ * The value must be of type NSNumber, encapsulating a BOOL value.
+ * If you set this to YES, then the underlying SecureTransport system will not evaluate the SecTrustRef of the peer.
+ * Instead it will pause at the moment evaulation would typically occur,
+ * and allow us to handle the security evaluation however we see fit.
+ * So GCDAsyncSocket will invoke the delegate method socket:shouldTrustPeer: passing the SecTrustRef.
+ *
+ * Note that if you set this option, then all other configuration keys are ignored.
+ * Evaluation will be completely up to you during the socket:didReceiveTrust:completionHandler: delegate method.
+ *
+ * For more information on trust evaluation see:
+ * Apple's Technical Note TN2232 - HTTPS Server Trust Evaluation
+ * https://developer.apple.com/library/ios/technotes/tn2232/_index.html
+ *
+ * If unspecified, the default value is NO.
+ *
+ * - GCDAsyncSocketUseCFStreamForTLS (iOS only)
+ * The value must be of type NSNumber, encapsulating a BOOL value.
+ * By default GCDAsyncSocket will use the SecureTransport layer to perform encryption.
+ * This gives us more control over the security protocol (many more configuration options),
+ * plus it allows us to optimize things like sys calls and buffer allocation.
+ *
+ * However, if you absolutely must, you can instruct GCDAsyncSocket to use the old-fashioned encryption
+ * technique by going through the CFStream instead. So instead of using SecureTransport, GCDAsyncSocket
+ * will instead setup a CFRead/CFWriteStream. And then set the kCFStreamPropertySSLSettings property
+ * (via CFReadStreamSetProperty / CFWriteStreamSetProperty) and will pass the given options to this method.
+ *
+ * Thus all the other keys in the given dictionary will be ignored by GCDAsyncSocket,
+ * and will passed directly CFReadStreamSetProperty / CFWriteStreamSetProperty.
+ * For more infomation on these keys, please see the documentation for kCFStreamPropertySSLSettings.
+ *
+ * If unspecified, the default value is NO.
+ *
+ * ==== The available CONFIGURATION KEYS are:
+ *
+ * - kCFStreamSSLPeerName
+ * The value must be of type NSString.
+ * It should match the name in the X.509 certificate given by the remote party.
+ * See Apple's documentation for SSLSetPeerDomainName.
+ *
+ * - kCFStreamSSLCertificates
+ * The value must be of type NSArray.
+ * See Apple's documentation for SSLSetCertificate.
+ *
+ * - kCFStreamSSLIsServer
+ * The value must be of type NSNumber, encapsulationg a BOOL value.
+ * See Apple's documentation for SSLCreateContext for iOS.
+ * This is optional for iOS. If not supplied, a NO value is the default.
+ * This is not needed for Mac OS X, and the value is ignored.
+ *
+ * - GCDAsyncSocketSSLPeerID
+ * The value must be of type NSData.
+ * You must set this value if you want to use TLS session resumption.
+ * See Apple's documentation for SSLSetPeerID.
+ *
+ * - GCDAsyncSocketSSLProtocolVersionMin
+ * - GCDAsyncSocketSSLProtocolVersionMax
+ * The value(s) must be of type NSNumber, encapsulting a SSLProtocol value.
+ * See Apple's documentation for SSLSetProtocolVersionMin & SSLSetProtocolVersionMax.
+ * See also the SSLProtocol typedef.
+ *
+ * - GCDAsyncSocketSSLSessionOptionFalseStart
+ * The value must be of type NSNumber, encapsulating a BOOL value.
+ * See Apple's documentation for kSSLSessionOptionFalseStart.
+ *
+ * - GCDAsyncSocketSSLSessionOptionSendOneByteRecord
+ * The value must be of type NSNumber, encapsulating a BOOL value.
+ * See Apple's documentation for kSSLSessionOptionSendOneByteRecord.
+ *
+ * - GCDAsyncSocketSSLCipherSuites
+ * The values must be of type NSArray.
+ * Each item within the array must be a NSNumber, encapsulating
+ * See Apple's documentation for SSLSetEnabledCiphers.
+ * See also the SSLCipherSuite typedef.
+ *
+ * - GCDAsyncSocketSSLDiffieHellmanParameters (Mac OS X only)
+ * The value must be of type NSData.
+ * See Apple's documentation for SSLSetDiffieHellmanParams.
+ *
+ * ==== The following UNAVAILABLE KEYS are: (with throw an exception)
+ *
+ * - kCFStreamSSLAllowsAnyRoot (UNAVAILABLE)
+ * You MUST use manual trust evaluation instead (see GCDAsyncSocketManuallyEvaluateTrust).
+ * Corresponding deprecated method: SSLSetAllowsAnyRoot
+ *
+ * - kCFStreamSSLAllowsExpiredRoots (UNAVAILABLE)
+ * You MUST use manual trust evaluation instead (see GCDAsyncSocketManuallyEvaluateTrust).
+ * Corresponding deprecated method: SSLSetAllowsExpiredRoots
+ *
+ * - kCFStreamSSLAllowsExpiredCertificates (UNAVAILABLE)
+ * You MUST use manual trust evaluation instead (see GCDAsyncSocketManuallyEvaluateTrust).
+ * Corresponding deprecated method: SSLSetAllowsExpiredCerts
+ *
+ * - kCFStreamSSLValidatesCertificateChain (UNAVAILABLE)
+ * You MUST use manual trust evaluation instead (see GCDAsyncSocketManuallyEvaluateTrust).
+ * Corresponding deprecated method: SSLSetEnableCertVerify
+ *
+ * - kCFStreamSSLLevel (UNAVAILABLE)
+ * You MUST use GCDAsyncSocketSSLProtocolVersionMin & GCDAsyncSocketSSLProtocolVersionMin instead.
+ * Corresponding deprecated method: SSLSetProtocolVersionEnabled
+ *
+ *
+ * Please refer to Apple's documentation for corresponding SSLFunctions.
+ *
+ * If you pass in nil or an empty dictionary, the default settings will be used.
+ *
+ * IMPORTANT SECURITY NOTE:
+ * The default settings will check to make sure the remote party's certificate is signed by a
+ * trusted 3rd party certificate agency (e.g. verisign) and that the certificate is not expired.
+ * However it will not verify the name on the certificate unless you
+ * give it a name to verify against via the kCFStreamSSLPeerName key.
+ * The security implications of this are important to understand.
+ * Imagine you are attempting to create a secure connection to MySecureServer.com,
+ * but your socket gets directed to MaliciousServer.com because of a hacked DNS server.
+ * If you simply use the default settings, and MaliciousServer.com has a valid certificate,
+ * the default settings will not detect any problems since the certificate is valid.
+ * To properly secure your connection in this particular scenario you
+ * should set the kCFStreamSSLPeerName property to "MySecureServer.com".
+ *
+ * You can also perform additional validation in socketDidSecure.
+**/
+- (void)startTLS:(nullable NSDictionary <NSString*,NSObject*>*)tlsSettings;
+
+#pragma mark Advanced
+
+/**
+ * Traditionally sockets are not closed until the conversation is over.
+ * However, it is technically possible for the remote enpoint to close its write stream.
+ * Our socket would then be notified that there is no more data to be read,
+ * but our socket would still be writeable and the remote endpoint could continue to receive our data.
+ *
+ * The argument for this confusing functionality stems from the idea that a client could shut down its
+ * write stream after sending a request to the server, thus notifying the server there are to be no further requests.
+ * In practice, however, this technique did little to help server developers.
+ *
+ * To make matters worse, from a TCP perspective there is no way to tell the difference from a read stream close
+ * and a full socket close. They both result in the TCP stack receiving a FIN packet. The only way to tell
+ * is by continuing to write to the socket. If it was only a read stream close, then writes will continue to work.
+ * Otherwise an error will be occur shortly (when the remote end sends us a RST packet).
+ *
+ * In addition to the technical challenges and confusion, many high level socket/stream API's provide
+ * no support for dealing with the problem. If the read stream is closed, the API immediately declares the
+ * socket to be closed, and shuts down the write stream as well. In fact, this is what Apple's CFStream API does.
+ * It might sound like poor design at first, but in fact it simplifies development.
+ *
+ * The vast majority of the time if the read stream is closed it's because the remote endpoint closed its socket.
+ * Thus it actually makes sense to close the socket at this point.
+ * And in fact this is what most networking developers want and expect to happen.
+ * However, if you are writing a server that interacts with a plethora of clients,
+ * you might encounter a client that uses the discouraged technique of shutting down its write stream.
+ * If this is the case, you can set this property to NO,
+ * and make use of the socketDidCloseReadStream delegate method.
+ *
+ * The default value is YES.
+**/
+@property (atomic, assign, readwrite) BOOL autoDisconnectOnClosedReadStream;
+
+/**
+ * GCDAsyncSocket maintains thread safety by using an internal serial dispatch_queue.
+ * In most cases, the instance creates this queue itself.
+ * However, to allow for maximum flexibility, the internal queue may be passed in the init method.
+ * This allows for some advanced options such as controlling socket priority via target queues.
+ * However, when one begins to use target queues like this, they open the door to some specific deadlock issues.
+ *
+ * For example, imagine there are 2 queues:
+ * dispatch_queue_t socketQueue;
+ * dispatch_queue_t socketTargetQueue;
+ *
+ * If you do this (pseudo-code):
+ * socketQueue.targetQueue = socketTargetQueue;
+ *
+ * Then all socketQueue operations will actually get run on the given socketTargetQueue.
+ * This is fine and works great in most situations.
+ * But if you run code directly from within the socketTargetQueue that accesses the socket,
+ * you could potentially get deadlock. Imagine the following code:
+ *
+ * - (BOOL)socketHasSomething
+ * {
+ * __block BOOL result = NO;
+ * dispatch_block_t block = ^{
+ * result = [self someInternalMethodToBeRunOnlyOnSocketQueue];
+ * }
+ * if (is_executing_on_queue(socketQueue))
+ * block();
+ * else
+ * dispatch_sync(socketQueue, block);
+ *
+ * return result;
+ * }
+ *
+ * What happens if you call this method from the socketTargetQueue? The result is deadlock.
+ * This is because the GCD API offers no mechanism to discover a queue's targetQueue.
+ * Thus we have no idea if our socketQueue is configured with a targetQueue.
+ * If we had this information, we could easily avoid deadlock.
+ * But, since these API's are missing or unfeasible, you'll have to explicitly set it.
+ *
+ * IF you pass a socketQueue via the init method,
+ * AND you've configured the passed socketQueue with a targetQueue,
+ * THEN you should pass the end queue in the target hierarchy.
+ *
+ * For example, consider the following queue hierarchy:
+ * socketQueue -> ipQueue -> moduleQueue
+ *
+ * This example demonstrates priority shaping within some server.
+ * All incoming client connections from the same IP address are executed on the same target queue.
+ * And all connections for a particular module are executed on the same target queue.
+ * Thus, the priority of all networking for the entire module can be changed on the fly.
+ * Additionally, networking traffic from a single IP cannot monopolize the module.
+ *
+ * Here's how you would accomplish something like that:
+ * - (dispatch_queue_t)newSocketQueueForConnectionFromAddress:(NSData *)address onSocket:(GCDAsyncSocket *)sock
+ * {
+ * dispatch_queue_t socketQueue = dispatch_queue_create("", NULL);
+ * dispatch_queue_t ipQueue = [self ipQueueForAddress:address];
+ *
+ * dispatch_set_target_queue(socketQueue, ipQueue);
+ * dispatch_set_target_queue(iqQueue, moduleQueue);
+ *
+ * return socketQueue;
+ * }
+ * - (void)socket:(GCDAsyncSocket *)sock didAcceptNewSocket:(GCDAsyncSocket *)newSocket
+ * {
+ * [clientConnections addObject:newSocket];
+ * [newSocket markSocketQueueTargetQueue:moduleQueue];
+ * }
+ *
+ * Note: This workaround is ONLY needed if you intend to execute code directly on the ipQueue or moduleQueue.
+ * This is often NOT the case, as such queues are used solely for execution shaping.
+**/
+- (void)markSocketQueueTargetQueue:(dispatch_queue_t)socketQueuesPreConfiguredTargetQueue;
+- (void)unmarkSocketQueueTargetQueue:(dispatch_queue_t)socketQueuesPreviouslyConfiguredTargetQueue;
+
+/**
+ * It's not thread-safe to access certain variables from outside the socket's internal queue.
+ *
+ * For example, the socket file descriptor.
+ * File descriptors are simply integers which reference an index in the per-process file table.
+ * However, when one requests a new file descriptor (by opening a file or socket),
+ * the file descriptor returned is guaranteed to be the lowest numbered unused descriptor.
+ * So if we're not careful, the following could be possible:
+ *
+ * - Thread A invokes a method which returns the socket's file descriptor.
+ * - The socket is closed via the socket's internal queue on thread B.
+ * - Thread C opens a file, and subsequently receives the file descriptor that was previously the socket's FD.
+ * - Thread A is now accessing/altering the file instead of the socket.
+ *
+ * In addition to this, other variables are not actually objects,
+ * and thus cannot be retained/released or even autoreleased.
+ * An example is the sslContext, of type SSLContextRef, which is actually a malloc'd struct.
+ *
+ * Although there are internal variables that make it difficult to maintain thread-safety,
+ * it is important to provide access to these variables
+ * to ensure this class can be used in a wide array of environments.
+ * This method helps to accomplish this by invoking the current block on the socket's internal queue.
+ * The methods below can be invoked from within the block to access
+ * those generally thread-unsafe internal variables in a thread-safe manner.
+ * The given block will be invoked synchronously on the socket's internal queue.
+ *
+ * If you save references to any protected variables and use them outside the block, you do so at your own peril.
+**/
+- (void)performBlock:(dispatch_block_t)block;
+
+/**
+ * These methods are only available from within the context of a performBlock: invocation.
+ * See the documentation for the performBlock: method above.
+ *
+ * Provides access to the socket's file descriptor(s).
+ * If the socket is a server socket (is accepting incoming connections),
+ * it might actually have multiple internal socket file descriptors - one for IPv4 and one for IPv6.
+**/
+- (int)socketFD;
+- (int)socket4FD;
+- (int)socket6FD;
+
+#if TARGET_OS_IPHONE
+
+/**
+ * These methods are only available from within the context of a performBlock: invocation.
+ * See the documentation for the performBlock: method above.
+ *
+ * Provides access to the socket's internal CFReadStream/CFWriteStream.
+ *
+ * These streams are only used as workarounds for specific iOS shortcomings:
+ *
+ * - Apple has decided to keep the SecureTransport framework private is iOS.
+ * This means the only supplied way to do SSL/TLS is via CFStream or some other API layered on top of it.
+ * Thus, in order to provide SSL/TLS support on iOS we are forced to rely on CFStream,
+ * instead of the preferred and faster and more powerful SecureTransport.
+ *
+ * - If a socket doesn't have backgrounding enabled, and that socket is closed while the app is backgrounded,
+ * Apple only bothers to notify us via the CFStream API.
+ * The faster and more powerful GCD API isn't notified properly in this case.
+ *
+ * See also: (BOOL)enableBackgroundingOnSocket
+**/
+- (nullable CFReadStreamRef)readStream;
+- (nullable CFWriteStreamRef)writeStream;
+
+/**
+ * This method is only available from within the context of a performBlock: invocation.
+ * See the documentation for the performBlock: method above.
+ *
+ * Configures the socket to allow it to operate when the iOS application has been backgrounded.
+ * In other words, this method creates a read & write stream, and invokes:
+ *
+ * CFReadStreamSetProperty(readStream, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+ * CFWriteStreamSetProperty(writeStream, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+ *
+ * Returns YES if successful, NO otherwise.
+ *
+ * Note: Apple does not officially support backgrounding server sockets.
+ * That is, if your socket is accepting incoming connections, Apple does not officially support
+ * allowing iOS applications to accept incoming connections while an app is backgrounded.
+ *
+ * Example usage:
+ *
+ * - (void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port
+ * {
+ * [asyncSocket performBlock:^{
+ * [asyncSocket enableBackgroundingOnSocket];
+ * }];
+ * }
+**/
+- (BOOL)enableBackgroundingOnSocket;
+
+#endif
+
+/**
+ * This method is only available from within the context of a performBlock: invocation.
+ * See the documentation for the performBlock: method above.
+ *
+ * Provides access to the socket's SSLContext, if SSL/TLS has been started on the socket.
+**/
+- (nullable SSLContextRef)sslContext;
+
+#pragma mark Utilities
+
+/**
+ * The address lookup utility used by the class.
+ * This method is synchronous, so it's recommended you use it on a background thread/queue.
+ *
+ * The special strings "localhost" and "loopback" return the loopback address for IPv4 and IPv6.
+ *
+ * @returns
+ * A mutable array with all IPv4 and IPv6 addresses returned by getaddrinfo.
+ * The addresses are specifically for TCP connections.
+ * You can filter the addresses, if needed, using the other utility methods provided by the class.
+**/
++ (nullable NSMutableArray *)lookupHost:(NSString *)host port:(uint16_t)port error:(NSError **)errPtr;
+
+/**
+ * Extracting host and port information from raw address data.
+**/
+
++ (nullable NSString *)hostFromAddress:(NSData *)address;
++ (uint16_t)portFromAddress:(NSData *)address;
+
++ (BOOL)isIPv4Address:(NSData *)address;
++ (BOOL)isIPv6Address:(NSData *)address;
+
++ (BOOL)getHost:( NSString * __nullable * __nullable)hostPtr port:(nullable uint16_t *)portPtr fromAddress:(NSData *)address;
+
++ (BOOL)getHost:(NSString * __nullable * __nullable)hostPtr port:(nullable uint16_t *)portPtr family:(nullable sa_family_t *)afPtr fromAddress:(NSData *)address;
+
+/**
+ * A few common line separators, for use with the readDataToData:... methods.
+**/
++ (NSData *)CRLFData; // 0x0D0A
++ (NSData *)CRData; // 0x0D
++ (NSData *)LFData; // 0x0A
++ (NSData *)ZeroData; // 0x00
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+@protocol GCDAsyncSocketDelegate <NSObject>
+@optional
+
+/**
+ * This method is called immediately prior to socket:didAcceptNewSocket:.
+ * It optionally allows a listening socket to specify the socketQueue for a new accepted socket.
+ * If this method is not implemented, or returns NULL, the new accepted socket will create its own default queue.
+ *
+ * Since you cannot autorelease a dispatch_queue,
+ * this method uses the "new" prefix in its name to specify that the returned queue has been retained.
+ *
+ * Thus you could do something like this in the implementation:
+ * return dispatch_queue_create("MyQueue", NULL);
+ *
+ * If you are placing multiple sockets on the same queue,
+ * then care should be taken to increment the retain count each time this method is invoked.
+ *
+ * For example, your implementation might look something like this:
+ * dispatch_retain(myExistingQueue);
+ * return myExistingQueue;
+**/
+- (nullable dispatch_queue_t)newSocketQueueForConnectionFromAddress:(NSData *)address onSocket:(GCDAsyncSocket *)sock;
+
+/**
+ * Called when a socket accepts a connection.
+ * Another socket is automatically spawned to handle it.
+ *
+ * You must retain the newSocket if you wish to handle the connection.
+ * Otherwise the newSocket instance will be released and the spawned connection will be closed.
+ *
+ * By default the new socket will have the same delegate and delegateQueue.
+ * You may, of course, change this at any time.
+**/
+- (void)socket:(GCDAsyncSocket *)sock didAcceptNewSocket:(GCDAsyncSocket *)newSocket;
+
+/**
+ * Called when a socket connects and is ready for reading and writing.
+ * The host parameter will be an IP address, not a DNS name.
+**/
+- (void)socket:(GCDAsyncSocket *)sock didConnectToHost:(NSString *)host port:(uint16_t)port;
+
+/**
+ * Called when a socket connects and is ready for reading and writing.
+ * The host parameter will be an IP address, not a DNS name.
+ **/
+- (void)socket:(GCDAsyncSocket *)sock didConnectToUrl:(NSURL *)url;
+
+/**
+ * Called when a socket has completed reading the requested data into memory.
+ * Not called if there is an error.
+**/
+- (void)socket:(GCDAsyncSocket *)sock didReadData:(NSData *)data withTag:(long)tag;
+
+/**
+ * Called when a socket has read in data, but has not yet completed the read.
+ * This would occur if using readToData: or readToLength: methods.
+ * It may be used to for things such as updating progress bars.
+**/
+- (void)socket:(GCDAsyncSocket *)sock didReadPartialDataOfLength:(NSUInteger)partialLength tag:(long)tag;
+
+/**
+ * Called when a socket has completed writing the requested data. Not called if there is an error.
+**/
+- (void)socket:(GCDAsyncSocket *)sock didWriteDataWithTag:(long)tag;
+
+/**
+ * Called when a socket has written some data, but has not yet completed the entire write.
+ * It may be used to for things such as updating progress bars.
+**/
+- (void)socket:(GCDAsyncSocket *)sock didWritePartialDataOfLength:(NSUInteger)partialLength tag:(long)tag;
+
+/**
+ * Called if a read operation has reached its timeout without completing.
+ * This method allows you to optionally extend the timeout.
+ * If you return a positive time interval (> 0) the read's timeout will be extended by the given amount.
+ * If you don't implement this method, or return a non-positive time interval (<= 0) the read will timeout as usual.
+ *
+ * The elapsed parameter is the sum of the original timeout, plus any additions previously added via this method.
+ * The length parameter is the number of bytes that have been read so far for the read operation.
+ *
+ * Note that this method may be called multiple times for a single read if you return positive numbers.
+**/
+- (NSTimeInterval)socket:(GCDAsyncSocket *)sock shouldTimeoutReadWithTag:(long)tag
+ elapsed:(NSTimeInterval)elapsed
+ bytesDone:(NSUInteger)length;
+
+/**
+ * Called if a write operation has reached its timeout without completing.
+ * This method allows you to optionally extend the timeout.
+ * If you return a positive time interval (> 0) the write's timeout will be extended by the given amount.
+ * If you don't implement this method, or return a non-positive time interval (<= 0) the write will timeout as usual.
+ *
+ * The elapsed parameter is the sum of the original timeout, plus any additions previously added via this method.
+ * The length parameter is the number of bytes that have been written so far for the write operation.
+ *
+ * Note that this method may be called multiple times for a single write if you return positive numbers.
+**/
+- (NSTimeInterval)socket:(GCDAsyncSocket *)sock shouldTimeoutWriteWithTag:(long)tag
+ elapsed:(NSTimeInterval)elapsed
+ bytesDone:(NSUInteger)length;
+
+/**
+ * Conditionally called if the read stream closes, but the write stream may still be writeable.
+ *
+ * This delegate method is only called if autoDisconnectOnClosedReadStream has been set to NO.
+ * See the discussion on the autoDisconnectOnClosedReadStream method for more information.
+**/
+- (void)socketDidCloseReadStream:(GCDAsyncSocket *)sock;
+
+/**
+ * Called when a socket disconnects with or without error.
+ *
+ * If you call the disconnect method, and the socket wasn't already disconnected,
+ * then an invocation of this delegate method will be enqueued on the delegateQueue
+ * before the disconnect method returns.
+ *
+ * Note: If the GCDAsyncSocket instance is deallocated while it is still connected,
+ * and the delegate is not also deallocated, then this method will be invoked,
+ * but the sock parameter will be nil. (It must necessarily be nil since it is no longer available.)
+ * This is a generally rare, but is possible if one writes code like this:
+ *
+ * asyncSocket = nil; // I'm implicitly disconnecting the socket
+ *
+ * In this case it may preferrable to nil the delegate beforehand, like this:
+ *
+ * asyncSocket.delegate = nil; // Don't invoke my delegate method
+ * asyncSocket = nil; // I'm implicitly disconnecting the socket
+ *
+ * Of course, this depends on how your state machine is configured.
+**/
+- (void)socketDidDisconnect:(GCDAsyncSocket *)sock withError:(nullable NSError *)err;
+
+/**
+ * Called after the socket has successfully completed SSL/TLS negotiation.
+ * This method is not called unless you use the provided startTLS method.
+ *
+ * If a SSL/TLS negotiation fails (invalid certificate, etc) then the socket will immediately close,
+ * and the socketDidDisconnect:withError: delegate method will be called with the specific SSL error code.
+**/
+- (void)socketDidSecure:(GCDAsyncSocket *)sock;
+
+/**
+ * Allows a socket delegate to hook into the TLS handshake and manually validate the peer it's connecting to.
+ *
+ * This is only called if startTLS is invoked with options that include:
+ * - GCDAsyncSocketManuallyEvaluateTrust == YES
+ *
+ * Typically the delegate will use SecTrustEvaluate (and related functions) to properly validate the peer.
+ *
+ * Note from Apple's documentation:
+ * Because [SecTrustEvaluate] might look on the network for certificates in the certificate chain,
+ * [it] might block while attempting network access. You should never call it from your main thread;
+ * call it only from within a function running on a dispatch queue or on a separate thread.
+ *
+ * Thus this method uses a completionHandler block rather than a normal return value.
+ * The completionHandler block is thread-safe, and may be invoked from a background queue/thread.
+ * It is safe to invoke the completionHandler block even if the socket has been closed.
+**/
+- (void)socket:(GCDAsyncSocket *)sock didReceiveTrust:(SecTrustRef)trust
+ completionHandler:(void (^)(BOOL shouldTrustPeer))completionHandler;
+
+@end
+NS_ASSUME_NONNULL_END
diff --git a/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncSocket.m b/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncSocket.m
new file mode 100755
index 0000000..abf2a8a
--- /dev/null
+++ b/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncSocket.m
@@ -0,0 +1,8365 @@
+//
+// GCDAsyncSocket.m
+//
+// This class is in the public domain.
+// Originally created by Robbie Hanson in Q4 2010.
+// Updated and maintained by Deusty LLC and the Apple development community.
+//
+// https://github.com/robbiehanson/CocoaAsyncSocket
+//
+
+#import "GCDAsyncSocket.h"
+
+#if TARGET_OS_IPHONE
+#import <CFNetwork/CFNetwork.h>
+#endif
+
+#import <TargetConditionals.h>
+#import <arpa/inet.h>
+#import <fcntl.h>
+#import <ifaddrs.h>
+#import <netdb.h>
+#import <netinet/in.h>
+#import <net/if.h>
+#import <sys/socket.h>
+#import <sys/types.h>
+#import <sys/ioctl.h>
+#import <sys/poll.h>
+#import <sys/uio.h>
+#import <sys/un.h>
+#import <unistd.h>
+
+#if ! __has_feature(objc_arc)
+#warning This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
+// For more information see: https://github.com/robbiehanson/CocoaAsyncSocket/wiki/ARC
+#endif
+
+
+#ifndef GCDAsyncSocketLoggingEnabled
+#define GCDAsyncSocketLoggingEnabled 0
+#endif
+
+#if GCDAsyncSocketLoggingEnabled
+
+// Logging Enabled - See log level below
+
+// Logging uses the CocoaLumberjack framework (which is also GCD based).
+// https://github.com/robbiehanson/CocoaLumberjack
+//
+// It allows us to do a lot of logging without significantly slowing down the code.
+#import "DDLog.h"
+
+#define LogAsync YES
+#define LogContext GCDAsyncSocketLoggingContext
+
+#define LogObjc(flg, frmt, ...) LOG_OBJC_MAYBE(LogAsync, logLevel, flg, LogContext, frmt, ##__VA_ARGS__)
+#define LogC(flg, frmt, ...) LOG_C_MAYBE(LogAsync, logLevel, flg, LogContext, frmt, ##__VA_ARGS__)
+
+#define LogError(frmt, ...) LogObjc(LOG_FLAG_ERROR, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogWarn(frmt, ...) LogObjc(LOG_FLAG_WARN, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogInfo(frmt, ...) LogObjc(LOG_FLAG_INFO, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogVerbose(frmt, ...) LogObjc(LOG_FLAG_VERBOSE, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+
+#define LogCError(frmt, ...) LogC(LOG_FLAG_ERROR, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogCWarn(frmt, ...) LogC(LOG_FLAG_WARN, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogCInfo(frmt, ...) LogC(LOG_FLAG_INFO, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogCVerbose(frmt, ...) LogC(LOG_FLAG_VERBOSE, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+
+#define LogTrace() LogObjc(LOG_FLAG_VERBOSE, @"%@: %@", THIS_FILE, THIS_METHOD)
+#define LogCTrace() LogC(LOG_FLAG_VERBOSE, @"%@: %s", THIS_FILE, __FUNCTION__)
+
+#ifndef GCDAsyncSocketLogLevel
+#define GCDAsyncSocketLogLevel LOG_LEVEL_VERBOSE
+#endif
+
+// Log levels : off, error, warn, info, verbose
+static const int logLevel = GCDAsyncSocketLogLevel;
+
+#else
+
+// Logging Disabled
+
+#define LogError(frmt, ...) {}
+#define LogWarn(frmt, ...) {}
+#define LogInfo(frmt, ...) {}
+#define LogVerbose(frmt, ...) {}
+
+#define LogCError(frmt, ...) {}
+#define LogCWarn(frmt, ...) {}
+#define LogCInfo(frmt, ...) {}
+#define LogCVerbose(frmt, ...) {}
+
+#define LogTrace() {}
+#define LogCTrace(frmt, ...) {}
+
+#endif
+
+/**
+ * Seeing a return statements within an inner block
+ * can sometimes be mistaken for a return point of the enclosing method.
+ * This makes inline blocks a bit easier to read.
+**/
+#define return_from_block return
+
+/**
+ * A socket file descriptor is really just an integer.
+ * It represents the index of the socket within the kernel.
+ * This makes invalid file descriptor comparisons easier to read.
+**/
+#define SOCKET_NULL -1
+
+
+NSString *const GCDAsyncSocketException = @"GCDAsyncSocketException";
+NSString *const GCDAsyncSocketErrorDomain = @"GCDAsyncSocketErrorDomain";
+
+NSString *const GCDAsyncSocketQueueName = @"GCDAsyncSocket";
+NSString *const GCDAsyncSocketThreadName = @"GCDAsyncSocket-CFStream";
+
+NSString *const GCDAsyncSocketManuallyEvaluateTrust = @"GCDAsyncSocketManuallyEvaluateTrust";
+#if TARGET_OS_IPHONE
+NSString *const GCDAsyncSocketUseCFStreamForTLS = @"GCDAsyncSocketUseCFStreamForTLS";
+#endif
+NSString *const GCDAsyncSocketSSLPeerID = @"GCDAsyncSocketSSLPeerID";
+NSString *const GCDAsyncSocketSSLProtocolVersionMin = @"GCDAsyncSocketSSLProtocolVersionMin";
+NSString *const GCDAsyncSocketSSLProtocolVersionMax = @"GCDAsyncSocketSSLProtocolVersionMax";
+NSString *const GCDAsyncSocketSSLSessionOptionFalseStart = @"GCDAsyncSocketSSLSessionOptionFalseStart";
+NSString *const GCDAsyncSocketSSLSessionOptionSendOneByteRecord = @"GCDAsyncSocketSSLSessionOptionSendOneByteRecord";
+NSString *const GCDAsyncSocketSSLCipherSuites = @"GCDAsyncSocketSSLCipherSuites";
+#if !TARGET_OS_IPHONE
+NSString *const GCDAsyncSocketSSLDiffieHellmanParameters = @"GCDAsyncSocketSSLDiffieHellmanParameters";
+#endif
+
+enum GCDAsyncSocketFlags
+{
+ kSocketStarted = 1 << 0, // If set, socket has been started (accepting/connecting)
+ kConnected = 1 << 1, // If set, the socket is connected
+ kForbidReadsWrites = 1 << 2, // If set, no new reads or writes are allowed
+ kReadsPaused = 1 << 3, // If set, reads are paused due to possible timeout
+ kWritesPaused = 1 << 4, // If set, writes are paused due to possible timeout
+ kDisconnectAfterReads = 1 << 5, // If set, disconnect after no more reads are queued
+ kDisconnectAfterWrites = 1 << 6, // If set, disconnect after no more writes are queued
+ kSocketCanAcceptBytes = 1 << 7, // If set, we know socket can accept bytes. If unset, it's unknown.
+ kReadSourceSuspended = 1 << 8, // If set, the read source is suspended
+ kWriteSourceSuspended = 1 << 9, // If set, the write source is suspended
+ kQueuedTLS = 1 << 10, // If set, we've queued an upgrade to TLS
+ kStartingReadTLS = 1 << 11, // If set, we're waiting for TLS negotiation to complete
+ kStartingWriteTLS = 1 << 12, // If set, we're waiting for TLS negotiation to complete
+ kSocketSecure = 1 << 13, // If set, socket is using secure communication via SSL/TLS
+ kSocketHasReadEOF = 1 << 14, // If set, we have read EOF from socket
+ kReadStreamClosed = 1 << 15, // If set, we've read EOF plus prebuffer has been drained
+ kDealloc = 1 << 16, // If set, the socket is being deallocated
+#if TARGET_OS_IPHONE
+ kAddedStreamsToRunLoop = 1 << 17, // If set, CFStreams have been added to listener thread
+ kUsingCFStreamForTLS = 1 << 18, // If set, we're forced to use CFStream instead of SecureTransport
+ kSecureSocketHasBytesAvailable = 1 << 19, // If set, CFReadStream has notified us of bytes available
+#endif
+};
+
+enum GCDAsyncSocketConfig
+{
+ kIPv4Disabled = 1 << 0, // If set, IPv4 is disabled
+ kIPv6Disabled = 1 << 1, // If set, IPv6 is disabled
+ kPreferIPv6 = 1 << 2, // If set, IPv6 is preferred over IPv4
+ kAllowHalfDuplexConnection = 1 << 3, // If set, the socket will stay open even if the read stream closes
+};
+
+#if TARGET_OS_IPHONE
+ static NSThread *cfstreamThread; // Used for CFStreams
+
+
+ static uint64_t cfstreamThreadRetainCount; // setup & teardown
+ static dispatch_queue_t cfstreamThreadSetupQueue; // setup & teardown
+#endif
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * A PreBuffer is used when there is more data available on the socket
+ * than is being requested by current read request.
+ * In this case we slurp up all data from the socket (to minimize sys calls),
+ * and store additional yet unread data in a "prebuffer".
+ *
+ * The prebuffer is entirely drained before we read from the socket again.
+ * In other words, a large chunk of data is written is written to the prebuffer.
+ * The prebuffer is then drained via a series of one or more reads (for subsequent read request(s)).
+ *
+ * A ring buffer was once used for this purpose.
+ * But a ring buffer takes up twice as much memory as needed (double the size for mirroring).
+ * In fact, it generally takes up more than twice the needed size as everything has to be rounded up to vm_page_size.
+ * And since the prebuffer is always completely drained after being written to, a full ring buffer isn't needed.
+ *
+ * The current design is very simple and straight-forward, while also keeping memory requirements lower.
+**/
+
+@interface GCDAsyncSocketPreBuffer : NSObject
+{
+ uint8_t *preBuffer;
+ size_t preBufferSize;
+
+ uint8_t *readPointer;
+ uint8_t *writePointer;
+}
+
+- (id)initWithCapacity:(size_t)numBytes;
+
+- (void)ensureCapacityForWrite:(size_t)numBytes;
+
+- (size_t)availableBytes;
+- (uint8_t *)readBuffer;
+
+- (void)getReadBuffer:(uint8_t **)bufferPtr availableBytes:(size_t *)availableBytesPtr;
+
+- (size_t)availableSpace;
+- (uint8_t *)writeBuffer;
+
+- (void)getWriteBuffer:(uint8_t **)bufferPtr availableSpace:(size_t *)availableSpacePtr;
+
+- (void)didRead:(size_t)bytesRead;
+- (void)didWrite:(size_t)bytesWritten;
+
+- (void)reset;
+
+@end
+
+@implementation GCDAsyncSocketPreBuffer
+
+- (id)initWithCapacity:(size_t)numBytes
+{
+ if ((self = [super init]))
+ {
+ preBufferSize = numBytes;
+ preBuffer = malloc(preBufferSize);
+
+ readPointer = preBuffer;
+ writePointer = preBuffer;
+ }
+ return self;
+}
+
+- (void)dealloc
+{
+ if (preBuffer)
+ free(preBuffer);
+}
+
+- (void)ensureCapacityForWrite:(size_t)numBytes
+{
+ size_t availableSpace = [self availableSpace];
+
+ if (numBytes > availableSpace)
+ {
+ size_t additionalBytes = numBytes - availableSpace;
+
+ size_t newPreBufferSize = preBufferSize + additionalBytes;
+ uint8_t *newPreBuffer = realloc(preBuffer, newPreBufferSize);
+
+ size_t readPointerOffset = readPointer - preBuffer;
+ size_t writePointerOffset = writePointer - preBuffer;
+
+ preBuffer = newPreBuffer;
+ preBufferSize = newPreBufferSize;
+
+ readPointer = preBuffer + readPointerOffset;
+ writePointer = preBuffer + writePointerOffset;
+ }
+}
+
+- (size_t)availableBytes
+{
+ return writePointer - readPointer;
+}
+
+- (uint8_t *)readBuffer
+{
+ return readPointer;
+}
+
+- (void)getReadBuffer:(uint8_t **)bufferPtr availableBytes:(size_t *)availableBytesPtr
+{
+ if (bufferPtr) *bufferPtr = readPointer;
+ if (availableBytesPtr) *availableBytesPtr = [self availableBytes];
+}
+
+- (void)didRead:(size_t)bytesRead
+{
+ readPointer += bytesRead;
+
+ if (readPointer == writePointer)
+ {
+ // The prebuffer has been drained. Reset pointers.
+ readPointer = preBuffer;
+ writePointer = preBuffer;
+ }
+}
+
+- (size_t)availableSpace
+{
+ return preBufferSize - (writePointer - preBuffer);
+}
+
+- (uint8_t *)writeBuffer
+{
+ return writePointer;
+}
+
+- (void)getWriteBuffer:(uint8_t **)bufferPtr availableSpace:(size_t *)availableSpacePtr
+{
+ if (bufferPtr) *bufferPtr = writePointer;
+ if (availableSpacePtr) *availableSpacePtr = [self availableSpace];
+}
+
+- (void)didWrite:(size_t)bytesWritten
+{
+ writePointer += bytesWritten;
+}
+
+- (void)reset
+{
+ readPointer = preBuffer;
+ writePointer = preBuffer;
+}
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * The GCDAsyncReadPacket encompasses the instructions for any given read.
+ * The content of a read packet allows the code to determine if we're:
+ * - reading to a certain length
+ * - reading to a certain separator
+ * - or simply reading the first chunk of available data
+**/
+@interface GCDAsyncReadPacket : NSObject
+{
+ @public
+ NSMutableData *buffer;
+ NSUInteger startOffset;
+ NSUInteger bytesDone;
+ NSUInteger maxLength;
+ NSTimeInterval timeout;
+ NSUInteger readLength;
+ NSData *term;
+ BOOL bufferOwner;
+ NSUInteger originalBufferLength;
+ long tag;
+}
+- (id)initWithData:(NSMutableData *)d
+ startOffset:(NSUInteger)s
+ maxLength:(NSUInteger)m
+ timeout:(NSTimeInterval)t
+ readLength:(NSUInteger)l
+ terminator:(NSData *)e
+ tag:(long)i;
+
+- (void)ensureCapacityForAdditionalDataOfLength:(NSUInteger)bytesToRead;
+
+- (NSUInteger)optimalReadLengthWithDefault:(NSUInteger)defaultValue shouldPreBuffer:(BOOL *)shouldPreBufferPtr;
+
+- (NSUInteger)readLengthForNonTermWithHint:(NSUInteger)bytesAvailable;
+- (NSUInteger)readLengthForTermWithHint:(NSUInteger)bytesAvailable shouldPreBuffer:(BOOL *)shouldPreBufferPtr;
+- (NSUInteger)readLengthForTermWithPreBuffer:(GCDAsyncSocketPreBuffer *)preBuffer found:(BOOL *)foundPtr;
+
+- (NSInteger)searchForTermAfterPreBuffering:(ssize_t)numBytes;
+
+@end
+
+@implementation GCDAsyncReadPacket
+
+- (id)initWithData:(NSMutableData *)d
+ startOffset:(NSUInteger)s
+ maxLength:(NSUInteger)m
+ timeout:(NSTimeInterval)t
+ readLength:(NSUInteger)l
+ terminator:(NSData *)e
+ tag:(long)i
+{
+ if((self = [super init]))
+ {
+ bytesDone = 0;
+ maxLength = m;
+ timeout = t;
+ readLength = l;
+ term = [e copy];
+ tag = i;
+
+ if (d)
+ {
+ buffer = d;
+ startOffset = s;
+ bufferOwner = NO;
+ originalBufferLength = [d length];
+ }
+ else
+ {
+ if (readLength > 0)
+ buffer = [[NSMutableData alloc] initWithLength:readLength];
+ else
+ buffer = [[NSMutableData alloc] initWithLength:0];
+
+ startOffset = 0;
+ bufferOwner = YES;
+ originalBufferLength = 0;
+ }
+ }
+ return self;
+}
+
+/**
+ * Increases the length of the buffer (if needed) to ensure a read of the given size will fit.
+**/
+- (void)ensureCapacityForAdditionalDataOfLength:(NSUInteger)bytesToRead
+{
+ NSUInteger buffSize = [buffer length];
+ NSUInteger buffUsed = startOffset + bytesDone;
+
+ NSUInteger buffSpace = buffSize - buffUsed;
+
+ if (bytesToRead > buffSpace)
+ {
+ NSUInteger buffInc = bytesToRead - buffSpace;
+
+ [buffer increaseLengthBy:buffInc];
+ }
+}
+
+/**
+ * This method is used when we do NOT know how much data is available to be read from the socket.
+ * This method returns the default value unless it exceeds the specified readLength or maxLength.
+ *
+ * Furthermore, the shouldPreBuffer decision is based upon the packet type,
+ * and whether the returned value would fit in the current buffer without requiring a resize of the buffer.
+**/
+- (NSUInteger)optimalReadLengthWithDefault:(NSUInteger)defaultValue shouldPreBuffer:(BOOL *)shouldPreBufferPtr
+{
+ NSUInteger result;
+
+ if (readLength > 0)
+ {
+ // Read a specific length of data
+
+ result = MIN(defaultValue, (readLength - bytesDone));
+
+ // There is no need to prebuffer since we know exactly how much data we need to read.
+ // Even if the buffer isn't currently big enough to fit this amount of data,
+ // it would have to be resized eventually anyway.
+
+ if (shouldPreBufferPtr)
+ *shouldPreBufferPtr = NO;
+ }
+ else
+ {
+ // Either reading until we find a specified terminator,
+ // or we're simply reading all available data.
+ //
+ // In other words, one of:
+ //
+ // - readDataToData packet
+ // - readDataWithTimeout packet
+
+ if (maxLength > 0)
+ result = MIN(defaultValue, (maxLength - bytesDone));
+ else
+ result = defaultValue;
+
+ // Since we don't know the size of the read in advance,
+ // the shouldPreBuffer decision is based upon whether the returned value would fit
+ // in the current buffer without requiring a resize of the buffer.
+ //
+ // This is because, in all likelyhood, the amount read from the socket will be less than the default value.
+ // Thus we should avoid over-allocating the read buffer when we can simply use the pre-buffer instead.
+
+ if (shouldPreBufferPtr)
+ {
+ NSUInteger buffSize = [buffer length];
+ NSUInteger buffUsed = startOffset + bytesDone;
+
+ NSUInteger buffSpace = buffSize - buffUsed;
+
+ if (buffSpace >= result)
+ *shouldPreBufferPtr = NO;
+ else
+ *shouldPreBufferPtr = YES;
+ }
+ }
+
+ return result;
+}
+
+/**
+ * For read packets without a set terminator, returns the amount of data
+ * that can be read without exceeding the readLength or maxLength.
+ *
+ * The given parameter indicates the number of bytes estimated to be available on the socket,
+ * which is taken into consideration during the calculation.
+ *
+ * The given hint MUST be greater than zero.
+**/
+- (NSUInteger)readLengthForNonTermWithHint:(NSUInteger)bytesAvailable
+{
+ NSAssert(term == nil, @"This method does not apply to term reads");
+ NSAssert(bytesAvailable > 0, @"Invalid parameter: bytesAvailable");
+
+ if (readLength > 0)
+ {
+ // Read a specific length of data
+
+ return MIN(bytesAvailable, (readLength - bytesDone));
+
+ // No need to avoid resizing the buffer.
+ // If the user provided their own buffer,
+ // and told us to read a certain length of data that exceeds the size of the buffer,
+ // then it is clear that our code will resize the buffer during the read operation.
+ //
+ // This method does not actually do any resizing.
+ // The resizing will happen elsewhere if needed.
+ }
+ else
+ {
+ // Read all available data
+
+ NSUInteger result = bytesAvailable;
+
+ if (maxLength > 0)
+ {
+ result = MIN(result, (maxLength - bytesDone));
+ }
+
+ // No need to avoid resizing the buffer.
+ // If the user provided their own buffer,
+ // and told us to read all available data without giving us a maxLength,
+ // then it is clear that our code might resize the buffer during the read operation.
+ //
+ // This method does not actually do any resizing.
+ // The resizing will happen elsewhere if needed.
+
+ return result;
+ }
+}
+
+/**
+ * For read packets with a set terminator, returns the amount of data
+ * that can be read without exceeding the maxLength.
+ *
+ * The given parameter indicates the number of bytes estimated to be available on the socket,
+ * which is taken into consideration during the calculation.
+ *
+ * To optimize memory allocations, mem copies, and mem moves
+ * the shouldPreBuffer boolean value will indicate if the data should be read into a prebuffer first,
+ * or if the data can be read directly into the read packet's buffer.
+**/
+- (NSUInteger)readLengthForTermWithHint:(NSUInteger)bytesAvailable shouldPreBuffer:(BOOL *)shouldPreBufferPtr
+{
+ NSAssert(term != nil, @"This method does not apply to non-term reads");
+ NSAssert(bytesAvailable > 0, @"Invalid parameter: bytesAvailable");
+
+
+ NSUInteger result = bytesAvailable;
+
+ if (maxLength > 0)
+ {
+ result = MIN(result, (maxLength - bytesDone));
+ }
+
+ // Should the data be read into the read packet's buffer, or into a pre-buffer first?
+ //
+ // One would imagine the preferred option is the faster one.
+ // So which one is faster?
+ //
+ // Reading directly into the packet's buffer requires:
+ // 1. Possibly resizing packet buffer (malloc/realloc)
+ // 2. Filling buffer (read)
+ // 3. Searching for term (memcmp)
+ // 4. Possibly copying overflow into prebuffer (malloc/realloc, memcpy)
+ //
+ // Reading into prebuffer first:
+ // 1. Possibly resizing prebuffer (malloc/realloc)
+ // 2. Filling buffer (read)
+ // 3. Searching for term (memcmp)
+ // 4. Copying underflow into packet buffer (malloc/realloc, memcpy)
+ // 5. Removing underflow from prebuffer (memmove)
+ //
+ // Comparing the performance of the two we can see that reading
+ // data into the prebuffer first is slower due to the extra memove.
+ //
+ // However:
+ // The implementation of NSMutableData is open source via core foundation's CFMutableData.
+ // Decreasing the length of a mutable data object doesn't cause a realloc.
+ // In other words, the capacity of a mutable data object can grow, but doesn't shrink.
+ //
+ // This means the prebuffer will rarely need a realloc.
+ // The packet buffer, on the other hand, may often need a realloc.
+ // This is especially true if we are the buffer owner.
+ // Furthermore, if we are constantly realloc'ing the packet buffer,
+ // and then moving the overflow into the prebuffer,
+ // then we're consistently over-allocating memory for each term read.
+ // And now we get into a bit of a tradeoff between speed and memory utilization.
+ //
+ // The end result is that the two perform very similarly.
+ // And we can answer the original question very simply by another means.
+ //
+ // If we can read all the data directly into the packet's buffer without resizing it first,
+ // then we do so. Otherwise we use the prebuffer.
+
+ if (shouldPreBufferPtr)
+ {
+ NSUInteger buffSize = [buffer length];
+ NSUInteger buffUsed = startOffset + bytesDone;
+
+ if ((buffSize - buffUsed) >= result)
+ *shouldPreBufferPtr = NO;
+ else
+ *shouldPreBufferPtr = YES;
+ }
+
+ return result;
+}
+
+/**
+ * For read packets with a set terminator,
+ * returns the amount of data that can be read from the given preBuffer,
+ * without going over a terminator or the maxLength.
+ *
+ * It is assumed the terminator has not already been read.
+**/
+- (NSUInteger)readLengthForTermWithPreBuffer:(GCDAsyncSocketPreBuffer *)preBuffer found:(BOOL *)foundPtr
+{
+ NSAssert(term != nil, @"This method does not apply to non-term reads");
+ NSAssert([preBuffer availableBytes] > 0, @"Invoked with empty pre buffer!");
+
+ // We know that the terminator, as a whole, doesn't exist in our own buffer.
+ // But it is possible that a _portion_ of it exists in our buffer.
+ // So we're going to look for the terminator starting with a portion of our own buffer.
+ //
+ // Example:
+ //
+ // term length = 3 bytes
+ // bytesDone = 5 bytes
+ // preBuffer length = 5 bytes
+ //
+ // If we append the preBuffer to our buffer,
+ // it would look like this:
+ //
+ // ---------------------
+ // |B|B|B|B|B|P|P|P|P|P|
+ // ---------------------
+ //
+ // So we start our search here:
+ //
+ // ---------------------
+ // |B|B|B|B|B|P|P|P|P|P|
+ // -------^-^-^---------
+ //
+ // And move forwards...
+ //
+ // ---------------------
+ // |B|B|B|B|B|P|P|P|P|P|
+ // ---------^-^-^-------
+ //
+ // Until we find the terminator or reach the end.
+ //
+ // ---------------------
+ // |B|B|B|B|B|P|P|P|P|P|
+ // ---------------^-^-^-
+
+ BOOL found = NO;
+
+ NSUInteger termLength = [term length];
+ NSUInteger preBufferLength = [preBuffer availableBytes];
+
+ if ((bytesDone + preBufferLength) < termLength)
+ {
+ // Not enough data for a full term sequence yet
+ return preBufferLength;
+ }
+
+ NSUInteger maxPreBufferLength;
+ if (maxLength > 0) {
+ maxPreBufferLength = MIN(preBufferLength, (maxLength - bytesDone));
+
+ // Note: maxLength >= termLength
+ }
+ else {
+ maxPreBufferLength = preBufferLength;
+ }
+
+ uint8_t seq[termLength];
+ const void *termBuf = [term bytes];
+
+ NSUInteger bufLen = MIN(bytesDone, (termLength - 1));
+ uint8_t *buf = (uint8_t *)[buffer mutableBytes] + startOffset + bytesDone - bufLen;
+
+ NSUInteger preLen = termLength - bufLen;
+ const uint8_t *pre = [preBuffer readBuffer];
+
+ NSUInteger loopCount = bufLen + maxPreBufferLength - termLength + 1; // Plus one. See example above.
+
+ NSUInteger result = maxPreBufferLength;
+
+ NSUInteger i;
+ for (i = 0; i < loopCount; i++)
+ {
+ if (bufLen > 0)
+ {
+ // Combining bytes from buffer and preBuffer
+
+ memcpy(seq, buf, bufLen);
+ memcpy(seq + bufLen, pre, preLen);
+
+ if (memcmp(seq, termBuf, termLength) == 0)
+ {
+ result = preLen;
+ found = YES;
+ break;
+ }
+
+ buf++;
+ bufLen--;
+ preLen++;
+ }
+ else
+ {
+ // Comparing directly from preBuffer
+
+ if (memcmp(pre, termBuf, termLength) == 0)
+ {
+ NSUInteger preOffset = pre - [preBuffer readBuffer]; // pointer arithmetic
+
+ result = preOffset + termLength;
+ found = YES;
+ break;
+ }
+
+ pre++;
+ }
+ }
+
+ // There is no need to avoid resizing the buffer in this particular situation.
+
+ if (foundPtr) *foundPtr = found;
+ return result;
+}
+
+/**
+ * For read packets with a set terminator, scans the packet buffer for the term.
+ * It is assumed the terminator had not been fully read prior to the new bytes.
+ *
+ * If the term is found, the number of excess bytes after the term are returned.
+ * If the term is not found, this method will return -1.
+ *
+ * Note: A return value of zero means the term was found at the very end.
+ *
+ * Prerequisites:
+ * The given number of bytes have been added to the end of our buffer.
+ * Our bytesDone variable has NOT been changed due to the prebuffered bytes.
+**/
+- (NSInteger)searchForTermAfterPreBuffering:(ssize_t)numBytes
+{
+ NSAssert(term != nil, @"This method does not apply to non-term reads");
+
+ // The implementation of this method is very similar to the above method.
+ // See the above method for a discussion of the algorithm used here.
+
+ uint8_t *buff = [buffer mutableBytes];
+ NSUInteger buffLength = bytesDone + numBytes;
+
+ const void *termBuff = [term bytes];
+ NSUInteger termLength = [term length];
+
+ // Note: We are dealing with unsigned integers,
+ // so make sure the math doesn't go below zero.
+
+ NSUInteger i = ((buffLength - numBytes) >= termLength) ? (buffLength - numBytes - termLength + 1) : 0;
+
+ while (i + termLength <= buffLength)
+ {
+ uint8_t *subBuffer = buff + startOffset + i;
+
+ if (memcmp(subBuffer, termBuff, termLength) == 0)
+ {
+ return buffLength - (i + termLength);
+ }
+
+ i++;
+ }
+
+ return -1;
+}
+
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * The GCDAsyncWritePacket encompasses the instructions for any given write.
+**/
+@interface GCDAsyncWritePacket : NSObject
+{
+ @public
+ NSData *buffer;
+ NSUInteger bytesDone;
+ long tag;
+ NSTimeInterval timeout;
+}
+- (id)initWithData:(NSData *)d timeout:(NSTimeInterval)t tag:(long)i;
+@end
+
+@implementation GCDAsyncWritePacket
+
+- (id)initWithData:(NSData *)d timeout:(NSTimeInterval)t tag:(long)i
+{
+ if((self = [super init]))
+ {
+ buffer = d; // Retain not copy. For performance as documented in header file.
+ bytesDone = 0;
+ timeout = t;
+ tag = i;
+ }
+ return self;
+}
+
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * The GCDAsyncSpecialPacket encompasses special instructions for interruptions in the read/write queues.
+ * This class my be altered to support more than just TLS in the future.
+**/
+@interface GCDAsyncSpecialPacket : NSObject
+{
+ @public
+ NSDictionary *tlsSettings;
+}
+- (id)initWithTLSSettings:(NSDictionary *)settings;
+@end
+
+@implementation GCDAsyncSpecialPacket
+
+- (id)initWithTLSSettings:(NSDictionary *)settings
+{
+ if((self = [super init]))
+ {
+ tlsSettings = [settings copy];
+ }
+ return self;
+}
+
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+@implementation GCDAsyncSocket
+{
+ uint32_t flags;
+ uint16_t config;
+
+ __weak id<GCDAsyncSocketDelegate> delegate;
+ dispatch_queue_t delegateQueue;
+
+ int socket4FD;
+ int socket6FD;
+ int socketUN;
+ NSURL *socketUrl;
+ int stateIndex;
+ NSData * connectInterface4;
+ NSData * connectInterface6;
+ NSData * connectInterfaceUN;
+
+ dispatch_queue_t socketQueue;
+
+ dispatch_source_t accept4Source;
+ dispatch_source_t accept6Source;
+ dispatch_source_t acceptUNSource;
+ dispatch_source_t connectTimer;
+ dispatch_source_t readSource;
+ dispatch_source_t writeSource;
+ dispatch_source_t readTimer;
+ dispatch_source_t writeTimer;
+
+ NSMutableArray *readQueue;
+ NSMutableArray *writeQueue;
+
+ GCDAsyncReadPacket *currentRead;
+ GCDAsyncWritePacket *currentWrite;
+
+ unsigned long socketFDBytesAvailable;
+
+ GCDAsyncSocketPreBuffer *preBuffer;
+
+#if TARGET_OS_IPHONE
+ CFStreamClientContext streamContext;
+ CFReadStreamRef readStream;
+ CFWriteStreamRef writeStream;
+#endif
+ SSLContextRef sslContext;
+ GCDAsyncSocketPreBuffer *sslPreBuffer;
+ size_t sslWriteCachedLength;
+ OSStatus sslErrCode;
+ OSStatus lastSSLHandshakeError;
+
+ void *IsOnSocketQueueOrTargetQueueKey;
+
+ id userData;
+ NSTimeInterval alternateAddressDelay;
+}
+
+- (id)init
+{
+ return [self initWithDelegate:nil delegateQueue:NULL socketQueue:NULL];
+}
+
+- (id)initWithSocketQueue:(dispatch_queue_t)sq
+{
+ return [self initWithDelegate:nil delegateQueue:NULL socketQueue:sq];
+}
+
+- (id)initWithDelegate:(id)aDelegate delegateQueue:(dispatch_queue_t)dq
+{
+ return [self initWithDelegate:aDelegate delegateQueue:dq socketQueue:NULL];
+}
+
+- (id)initWithDelegate:(id)aDelegate delegateQueue:(dispatch_queue_t)dq socketQueue:(dispatch_queue_t)sq
+{
+ if((self = [super init]))
+ {
+ delegate = aDelegate;
+ delegateQueue = dq;
+
+ #if !OS_OBJECT_USE_OBJC
+ if (dq) dispatch_retain(dq);
+ #endif
+
+ socket4FD = SOCKET_NULL;
+ socket6FD = SOCKET_NULL;
+ socketUN = SOCKET_NULL;
+ socketUrl = nil;
+ stateIndex = 0;
+
+ if (sq)
+ {
+ NSAssert(sq != dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0),
+ @"The given socketQueue parameter must not be a concurrent queue.");
+ NSAssert(sq != dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0),
+ @"The given socketQueue parameter must not be a concurrent queue.");
+ NSAssert(sq != dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),
+ @"The given socketQueue parameter must not be a concurrent queue.");
+
+ socketQueue = sq;
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_retain(sq);
+ #endif
+ }
+ else
+ {
+ socketQueue = dispatch_queue_create([GCDAsyncSocketQueueName UTF8String], NULL);
+ }
+
+ // The dispatch_queue_set_specific() and dispatch_get_specific() functions take a "void *key" parameter.
+ // From the documentation:
+ //
+ // > Keys are only compared as pointers and are never dereferenced.
+ // > Thus, you can use a pointer to a static variable for a specific subsystem or
+ // > any other value that allows you to identify the value uniquely.
+ //
+ // We're just going to use the memory address of an ivar.
+ // Specifically an ivar that is explicitly named for our purpose to make the code more readable.
+ //
+ // However, it feels tedious (and less readable) to include the "&" all the time:
+ // dispatch_get_specific(&IsOnSocketQueueOrTargetQueueKey)
+ //
+ // So we're going to make it so it doesn't matter if we use the '&' or not,
+ // by assigning the value of the ivar to the address of the ivar.
+ // Thus: IsOnSocketQueueOrTargetQueueKey == &IsOnSocketQueueOrTargetQueueKey;
+
+ IsOnSocketQueueOrTargetQueueKey = &IsOnSocketQueueOrTargetQueueKey;
+
+ void *nonNullUnusedPointer = (__bridge void *)self;
+ dispatch_queue_set_specific(socketQueue, IsOnSocketQueueOrTargetQueueKey, nonNullUnusedPointer, NULL);
+
+ readQueue = [[NSMutableArray alloc] initWithCapacity:5];
+ currentRead = nil;
+
+ writeQueue = [[NSMutableArray alloc] initWithCapacity:5];
+ currentWrite = nil;
+
+ preBuffer = [[GCDAsyncSocketPreBuffer alloc] initWithCapacity:(1024 * 4)];
+ alternateAddressDelay = 0.3;
+ }
+ return self;
+}
+
+- (void)dealloc
+{
+ LogInfo(@"%@ - %@ (start)", THIS_METHOD, self);
+
+ // Set dealloc flag.
+ // This is used by closeWithError to ensure we don't accidentally retain ourself.
+ flags |= kDealloc;
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ [self closeWithError:nil];
+ }
+ else
+ {
+ dispatch_sync(socketQueue, ^{
+ [self closeWithError:nil];
+ });
+ }
+
+ delegate = nil;
+
+ #if !OS_OBJECT_USE_OBJC
+ if (delegateQueue) dispatch_release(delegateQueue);
+ #endif
+ delegateQueue = NULL;
+
+ #if !OS_OBJECT_USE_OBJC
+ if (socketQueue) dispatch_release(socketQueue);
+ #endif
+ socketQueue = NULL;
+
+ LogInfo(@"%@ - %@ (finish)", THIS_METHOD, self);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Configuration
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (id)delegate
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return delegate;
+ }
+ else
+ {
+ __block id result;
+
+ dispatch_sync(socketQueue, ^{
+ result = delegate;
+ });
+
+ return result;
+ }
+}
+
+- (void)setDelegate:(id)newDelegate synchronously:(BOOL)synchronously
+{
+ dispatch_block_t block = ^{
+ delegate = newDelegate;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey)) {
+ block();
+ }
+ else {
+ if (synchronously)
+ dispatch_sync(socketQueue, block);
+ else
+ dispatch_async(socketQueue, block);
+ }
+}
+
+- (void)setDelegate:(id)newDelegate
+{
+ [self setDelegate:newDelegate synchronously:NO];
+}
+
+- (void)synchronouslySetDelegate:(id)newDelegate
+{
+ [self setDelegate:newDelegate synchronously:YES];
+}
+
+- (dispatch_queue_t)delegateQueue
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return delegateQueue;
+ }
+ else
+ {
+ __block dispatch_queue_t result;
+
+ dispatch_sync(socketQueue, ^{
+ result = delegateQueue;
+ });
+
+ return result;
+ }
+}
+
+- (void)setDelegateQueue:(dispatch_queue_t)newDelegateQueue synchronously:(BOOL)synchronously
+{
+ dispatch_block_t block = ^{
+
+ #if !OS_OBJECT_USE_OBJC
+ if (delegateQueue) dispatch_release(delegateQueue);
+ if (newDelegateQueue) dispatch_retain(newDelegateQueue);
+ #endif
+
+ delegateQueue = newDelegateQueue;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey)) {
+ block();
+ }
+ else {
+ if (synchronously)
+ dispatch_sync(socketQueue, block);
+ else
+ dispatch_async(socketQueue, block);
+ }
+}
+
+- (void)setDelegateQueue:(dispatch_queue_t)newDelegateQueue
+{
+ [self setDelegateQueue:newDelegateQueue synchronously:NO];
+}
+
+- (void)synchronouslySetDelegateQueue:(dispatch_queue_t)newDelegateQueue
+{
+ [self setDelegateQueue:newDelegateQueue synchronously:YES];
+}
+
+- (void)getDelegate:(id<GCDAsyncSocketDelegate> *)delegatePtr delegateQueue:(dispatch_queue_t *)delegateQueuePtr
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ if (delegatePtr) *delegatePtr = delegate;
+ if (delegateQueuePtr) *delegateQueuePtr = delegateQueue;
+ }
+ else
+ {
+ __block id dPtr = NULL;
+ __block dispatch_queue_t dqPtr = NULL;
+
+ dispatch_sync(socketQueue, ^{
+ dPtr = delegate;
+ dqPtr = delegateQueue;
+ });
+
+ if (delegatePtr) *delegatePtr = dPtr;
+ if (delegateQueuePtr) *delegateQueuePtr = dqPtr;
+ }
+}
+
+- (void)setDelegate:(id)newDelegate delegateQueue:(dispatch_queue_t)newDelegateQueue synchronously:(BOOL)synchronously
+{
+ dispatch_block_t block = ^{
+
+ delegate = newDelegate;
+
+ #if !OS_OBJECT_USE_OBJC
+ if (delegateQueue) dispatch_release(delegateQueue);
+ if (newDelegateQueue) dispatch_retain(newDelegateQueue);
+ #endif
+
+ delegateQueue = newDelegateQueue;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey)) {
+ block();
+ }
+ else {
+ if (synchronously)
+ dispatch_sync(socketQueue, block);
+ else
+ dispatch_async(socketQueue, block);
+ }
+}
+
+- (void)setDelegate:(id)newDelegate delegateQueue:(dispatch_queue_t)newDelegateQueue
+{
+ [self setDelegate:newDelegate delegateQueue:newDelegateQueue synchronously:NO];
+}
+
+- (void)synchronouslySetDelegate:(id)newDelegate delegateQueue:(dispatch_queue_t)newDelegateQueue
+{
+ [self setDelegate:newDelegate delegateQueue:newDelegateQueue synchronously:YES];
+}
+
+- (BOOL)isIPv4Enabled
+{
+ // Note: YES means kIPv4Disabled is OFF
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return ((config & kIPv4Disabled) == 0);
+ }
+ else
+ {
+ __block BOOL result;
+
+ dispatch_sync(socketQueue, ^{
+ result = ((config & kIPv4Disabled) == 0);
+ });
+
+ return result;
+ }
+}
+
+- (void)setIPv4Enabled:(BOOL)flag
+{
+ // Note: YES means kIPv4Disabled is OFF
+
+ dispatch_block_t block = ^{
+
+ if (flag)
+ config &= ~kIPv4Disabled;
+ else
+ config |= kIPv4Disabled;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (BOOL)isIPv6Enabled
+{
+ // Note: YES means kIPv6Disabled is OFF
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return ((config & kIPv6Disabled) == 0);
+ }
+ else
+ {
+ __block BOOL result;
+
+ dispatch_sync(socketQueue, ^{
+ result = ((config & kIPv6Disabled) == 0);
+ });
+
+ return result;
+ }
+}
+
+- (void)setIPv6Enabled:(BOOL)flag
+{
+ // Note: YES means kIPv6Disabled is OFF
+
+ dispatch_block_t block = ^{
+
+ if (flag)
+ config &= ~kIPv6Disabled;
+ else
+ config |= kIPv6Disabled;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (BOOL)isIPv4PreferredOverIPv6
+{
+ // Note: YES means kPreferIPv6 is OFF
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return ((config & kPreferIPv6) == 0);
+ }
+ else
+ {
+ __block BOOL result;
+
+ dispatch_sync(socketQueue, ^{
+ result = ((config & kPreferIPv6) == 0);
+ });
+
+ return result;
+ }
+}
+
+- (void)setIPv4PreferredOverIPv6:(BOOL)flag
+{
+ // Note: YES means kPreferIPv6 is OFF
+
+ dispatch_block_t block = ^{
+
+ if (flag)
+ config &= ~kPreferIPv6;
+ else
+ config |= kPreferIPv6;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (NSTimeInterval) alternateAddressDelay {
+ __block NSTimeInterval delay;
+ dispatch_block_t block = ^{
+ delay = alternateAddressDelay;
+ };
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+ return delay;
+}
+
+- (void) setAlternateAddressDelay:(NSTimeInterval)delay {
+ dispatch_block_t block = ^{
+ alternateAddressDelay = delay;
+ };
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (id)userData
+{
+ __block id result = nil;
+
+ dispatch_block_t block = ^{
+
+ result = userData;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (void)setUserData:(id)arbitraryUserData
+{
+ dispatch_block_t block = ^{
+
+ if (userData != arbitraryUserData)
+ {
+ userData = arbitraryUserData;
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Accepting
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (BOOL)acceptOnPort:(uint16_t)port error:(NSError **)errPtr
+{
+ return [self acceptOnInterface:nil port:port error:errPtr];
+}
+
+- (BOOL)acceptOnInterface:(NSString *)inInterface port:(uint16_t)port error:(NSError **)errPtr
+{
+ LogTrace();
+
+ // Just in-case interface parameter is immutable.
+ NSString *interface = [inInterface copy];
+
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ // CreateSocket Block
+ // This block will be invoked within the dispatch block below.
+
+ int(^createSocket)(int, NSData*) = ^int (int domain, NSData *interfaceAddr) {
+
+ int socketFD = socket(domain, SOCK_STREAM, 0);
+
+ if (socketFD == SOCKET_NULL)
+ {
+ NSString *reason = @"Error in socket() function";
+ err = [self errnoErrorWithReason:reason];
+
+ return SOCKET_NULL;
+ }
+
+ int status;
+
+ // Set socket options
+
+ status = fcntl(socketFD, F_SETFL, O_NONBLOCK);
+ if (status == -1)
+ {
+ NSString *reason = @"Error enabling non-blocking IO on socket (fcntl)";
+ err = [self errnoErrorWithReason:reason];
+
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ int reuseOn = 1;
+ status = setsockopt(socketFD, SOL_SOCKET, SO_REUSEADDR, &reuseOn, sizeof(reuseOn));
+ if (status == -1)
+ {
+ NSString *reason = @"Error enabling address reuse (setsockopt)";
+ err = [self errnoErrorWithReason:reason];
+
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ // Bind socket
+
+ status = bind(socketFD, (const struct sockaddr *)[interfaceAddr bytes], (socklen_t)[interfaceAddr length]);
+ if (status == -1)
+ {
+ NSString *reason = @"Error in bind() function";
+ err = [self errnoErrorWithReason:reason];
+
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ // Listen
+
+ status = listen(socketFD, 1024);
+ if (status == -1)
+ {
+ NSString *reason = @"Error in listen() function";
+ err = [self errnoErrorWithReason:reason];
+
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ return socketFD;
+ };
+
+ // Create dispatch block and run on socketQueue
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ if (delegate == nil) // Must have delegate set
+ {
+ NSString *msg = @"Attempting to accept without a delegate. Set a delegate first.";
+ err = [self badConfigError:msg];
+
+ return_from_block;
+ }
+
+ if (delegateQueue == NULL) // Must have delegate queue set
+ {
+ NSString *msg = @"Attempting to accept without a delegate queue. Set a delegate queue first.";
+ err = [self badConfigError:msg];
+
+ return_from_block;
+ }
+
+ BOOL isIPv4Disabled = (config & kIPv4Disabled) ? YES : NO;
+ BOOL isIPv6Disabled = (config & kIPv6Disabled) ? YES : NO;
+
+ if (isIPv4Disabled && isIPv6Disabled) // Must have IPv4 or IPv6 enabled
+ {
+ NSString *msg = @"Both IPv4 and IPv6 have been disabled. Must enable at least one protocol first.";
+ err = [self badConfigError:msg];
+
+ return_from_block;
+ }
+
+ if (![self isDisconnected]) // Must be disconnected
+ {
+ NSString *msg = @"Attempting to accept while connected or accepting connections. Disconnect first.";
+ err = [self badConfigError:msg];
+
+ return_from_block;
+ }
+
+ // Clear queues (spurious read/write requests post disconnect)
+ [readQueue removeAllObjects];
+ [writeQueue removeAllObjects];
+
+ // Resolve interface from description
+
+ NSMutableData *interface4 = nil;
+ NSMutableData *interface6 = nil;
+
+ [self getInterfaceAddress4:&interface4 address6:&interface6 fromDescription:interface port:port];
+
+ if ((interface4 == nil) && (interface6 == nil))
+ {
+ NSString *msg = @"Unknown interface. Specify valid interface by name (e.g. \"en1\") or IP address.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ if (isIPv4Disabled && (interface6 == nil))
+ {
+ NSString *msg = @"IPv4 has been disabled and specified interface doesn't support IPv6.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ if (isIPv6Disabled && (interface4 == nil))
+ {
+ NSString *msg = @"IPv6 has been disabled and specified interface doesn't support IPv4.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ BOOL enableIPv4 = !isIPv4Disabled && (interface4 != nil);
+ BOOL enableIPv6 = !isIPv6Disabled && (interface6 != nil);
+
+ // Create sockets, configure, bind, and listen
+
+ if (enableIPv4)
+ {
+ LogVerbose(@"Creating IPv4 socket");
+ socket4FD = createSocket(AF_INET, interface4);
+
+ if (socket4FD == SOCKET_NULL)
+ {
+ return_from_block;
+ }
+ }
+
+ if (enableIPv6)
+ {
+ LogVerbose(@"Creating IPv6 socket");
+
+ if (enableIPv4 && (port == 0))
+ {
+ // No specific port was specified, so we allowed the OS to pick an available port for us.
+ // Now we need to make sure the IPv6 socket listens on the same port as the IPv4 socket.
+
+ struct sockaddr_in6 *addr6 = (struct sockaddr_in6 *)[interface6 mutableBytes];
+ addr6->sin6_port = htons([self localPort4]);
+ }
+
+ socket6FD = createSocket(AF_INET6, interface6);
+
+ if (socket6FD == SOCKET_NULL)
+ {
+ if (socket4FD != SOCKET_NULL)
+ {
+ LogVerbose(@"close(socket4FD)");
+ close(socket4FD);
+ }
+
+ return_from_block;
+ }
+ }
+
+ // Create accept sources
+
+ if (enableIPv4)
+ {
+ accept4Source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, socket4FD, 0, socketQueue);
+
+ int socketFD = socket4FD;
+ dispatch_source_t acceptSource = accept4Source;
+
+ __weak GCDAsyncSocket *weakSelf = self;
+
+ dispatch_source_set_event_handler(accept4Source, ^{ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf == nil) return_from_block;
+
+ LogVerbose(@"event4Block");
+
+ unsigned long i = 0;
+ unsigned long numPendingConnections = dispatch_source_get_data(acceptSource);
+
+ LogVerbose(@"numPendingConnections: %lu", numPendingConnections);
+
+ while ([strongSelf doAccept:socketFD] && (++i < numPendingConnections));
+
+ #pragma clang diagnostic pop
+ }});
+
+
+ dispatch_source_set_cancel_handler(accept4Source, ^{
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ #if !OS_OBJECT_USE_OBJC
+ LogVerbose(@"dispatch_release(accept4Source)");
+ dispatch_release(acceptSource);
+ #endif
+
+ LogVerbose(@"close(socket4FD)");
+ close(socketFD);
+
+ #pragma clang diagnostic pop
+ });
+
+ LogVerbose(@"dispatch_resume(accept4Source)");
+ dispatch_resume(accept4Source);
+ }
+
+ if (enableIPv6)
+ {
+ accept6Source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, socket6FD, 0, socketQueue);
+
+ int socketFD = socket6FD;
+ dispatch_source_t acceptSource = accept6Source;
+
+ __weak GCDAsyncSocket *weakSelf = self;
+
+ dispatch_source_set_event_handler(accept6Source, ^{ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf == nil) return_from_block;
+
+ LogVerbose(@"event6Block");
+
+ unsigned long i = 0;
+ unsigned long numPendingConnections = dispatch_source_get_data(acceptSource);
+
+ LogVerbose(@"numPendingConnections: %lu", numPendingConnections);
+
+ while ([strongSelf doAccept:socketFD] && (++i < numPendingConnections));
+
+ #pragma clang diagnostic pop
+ }});
+
+ dispatch_source_set_cancel_handler(accept6Source, ^{
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ #if !OS_OBJECT_USE_OBJC
+ LogVerbose(@"dispatch_release(accept6Source)");
+ dispatch_release(acceptSource);
+ #endif
+
+ LogVerbose(@"close(socket6FD)");
+ close(socketFD);
+
+ #pragma clang diagnostic pop
+ });
+
+ LogVerbose(@"dispatch_resume(accept6Source)");
+ dispatch_resume(accept6Source);
+ }
+
+ flags |= kSocketStarted;
+
+ result = YES;
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (result == NO)
+ {
+ LogInfo(@"Error in accept: %@", err);
+
+ if (errPtr)
+ *errPtr = err;
+ }
+
+ return result;
+}
+
+- (BOOL)acceptOnUrl:(NSURL *)url error:(NSError **)errPtr;
+{
+ LogTrace();
+
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ // CreateSocket Block
+ // This block will be invoked within the dispatch block below.
+
+ int(^createSocket)(int, NSData*) = ^int (int domain, NSData *interfaceAddr) {
+
+ int socketFD = socket(domain, SOCK_STREAM, 0);
+
+ if (socketFD == SOCKET_NULL)
+ {
+ NSString *reason = @"Error in socket() function";
+ err = [self errnoErrorWithReason:reason];
+
+ return SOCKET_NULL;
+ }
+
+ int status;
+
+ // Set socket options
+
+ status = fcntl(socketFD, F_SETFL, O_NONBLOCK);
+ if (status == -1)
+ {
+ NSString *reason = @"Error enabling non-blocking IO on socket (fcntl)";
+ err = [self errnoErrorWithReason:reason];
+
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ int reuseOn = 1;
+ status = setsockopt(socketFD, SOL_SOCKET, SO_REUSEADDR, &reuseOn, sizeof(reuseOn));
+ if (status == -1)
+ {
+ NSString *reason = @"Error enabling address reuse (setsockopt)";
+ err = [self errnoErrorWithReason:reason];
+
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ // Bind socket
+
+ status = bind(socketFD, (const struct sockaddr *)[interfaceAddr bytes], (socklen_t)[interfaceAddr length]);
+ if (status == -1)
+ {
+ NSString *reason = @"Error in bind() function";
+ err = [self errnoErrorWithReason:reason];
+
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ // Listen
+
+ status = listen(socketFD, 1024);
+ if (status == -1)
+ {
+ NSString *reason = @"Error in listen() function";
+ err = [self errnoErrorWithReason:reason];
+
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ return socketFD;
+ };
+
+ // Create dispatch block and run on socketQueue
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ if (delegate == nil) // Must have delegate set
+ {
+ NSString *msg = @"Attempting to accept without a delegate. Set a delegate first.";
+ err = [self badConfigError:msg];
+
+ return_from_block;
+ }
+
+ if (delegateQueue == NULL) // Must have delegate queue set
+ {
+ NSString *msg = @"Attempting to accept without a delegate queue. Set a delegate queue first.";
+ err = [self badConfigError:msg];
+
+ return_from_block;
+ }
+
+ if (![self isDisconnected]) // Must be disconnected
+ {
+ NSString *msg = @"Attempting to accept while connected or accepting connections. Disconnect first.";
+ err = [self badConfigError:msg];
+
+ return_from_block;
+ }
+
+ // Clear queues (spurious read/write requests post disconnect)
+ [readQueue removeAllObjects];
+ [writeQueue removeAllObjects];
+
+ // Remove a previous socket
+
+ NSError *error = nil;
+ NSFileManager *fileManager = [NSFileManager defaultManager];
+ if ([fileManager fileExistsAtPath:url.path]) {
+ if (![[NSFileManager defaultManager] removeItemAtURL:url error:&error]) {
+ NSString *msg = @"Could not remove previous unix domain socket at given url.";
+ err = [self otherError:msg];
+
+ return_from_block;
+ }
+ }
+
+ // Resolve interface from description
+
+ NSData *interface = [self getInterfaceAddressFromUrl:url];
+
+ if (interface == nil)
+ {
+ NSString *msg = @"Invalid unix domain url. Specify a valid file url that does not exist (e.g. \"file:///tmp/socket\")";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Create sockets, configure, bind, and listen
+
+ LogVerbose(@"Creating unix domain socket");
+ socketUN = createSocket(AF_UNIX, interface);
+
+ if (socketUN == SOCKET_NULL)
+ {
+ return_from_block;
+ }
+
+ socketUrl = url;
+
+ // Create accept sources
+
+ acceptUNSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, socketUN, 0, socketQueue);
+
+ int socketFD = socketUN;
+ dispatch_source_t acceptSource = acceptUNSource;
+
+ dispatch_source_set_event_handler(acceptUNSource, ^{ @autoreleasepool {
+
+ LogVerbose(@"eventUNBlock");
+
+ unsigned long i = 0;
+ unsigned long numPendingConnections = dispatch_source_get_data(acceptSource);
+
+ LogVerbose(@"numPendingConnections: %lu", numPendingConnections);
+
+ while ([self doAccept:socketFD] && (++i < numPendingConnections));
+ }});
+
+ dispatch_source_set_cancel_handler(acceptUNSource, ^{
+
+#if NEEDS_DISPATCH_RETAIN_RELEASE
+ LogVerbose(@"dispatch_release(accept4Source)");
+ dispatch_release(acceptSource);
+#endif
+
+ LogVerbose(@"close(socket4FD)");
+ close(socketFD);
+ });
+
+ LogVerbose(@"dispatch_resume(accept4Source)");
+ dispatch_resume(acceptUNSource);
+
+ flags |= kSocketStarted;
+
+ result = YES;
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (result == NO)
+ {
+ LogInfo(@"Error in accept: %@", err);
+
+ if (errPtr)
+ *errPtr = err;
+ }
+
+ return result;
+}
+
+- (BOOL)doAccept:(int)parentSocketFD
+{
+ LogTrace();
+
+ int socketType;
+ int childSocketFD;
+ NSData *childSocketAddress;
+
+ if (parentSocketFD == socket4FD)
+ {
+ socketType = 0;
+
+ struct sockaddr_in addr;
+ socklen_t addrLen = sizeof(addr);
+
+ childSocketFD = accept(parentSocketFD, (struct sockaddr *)&addr, &addrLen);
+
+ if (childSocketFD == -1)
+ {
+ LogWarn(@"Accept failed with error: %@", [self errnoError]);
+ return NO;
+ }
+
+ childSocketAddress = [NSData dataWithBytes:&addr length:addrLen];
+ }
+ else if (parentSocketFD == socket6FD)
+ {
+ socketType = 1;
+
+ struct sockaddr_in6 addr;
+ socklen_t addrLen = sizeof(addr);
+
+ childSocketFD = accept(parentSocketFD, (struct sockaddr *)&addr, &addrLen);
+
+ if (childSocketFD == -1)
+ {
+ LogWarn(@"Accept failed with error: %@", [self errnoError]);
+ return NO;
+ }
+
+ childSocketAddress = [NSData dataWithBytes:&addr length:addrLen];
+ }
+ else // if (parentSocketFD == socketUN)
+ {
+ socketType = 2;
+
+ struct sockaddr_un addr;
+ socklen_t addrLen = sizeof(addr);
+
+ childSocketFD = accept(parentSocketFD, (struct sockaddr *)&addr, &addrLen);
+
+ if (childSocketFD == -1)
+ {
+ LogWarn(@"Accept failed with error: %@", [self errnoError]);
+ return NO;
+ }
+
+ childSocketAddress = [NSData dataWithBytes:&addr length:addrLen];
+ }
+
+ // Enable non-blocking IO on the socket
+
+ int result = fcntl(childSocketFD, F_SETFL, O_NONBLOCK);
+ if (result == -1)
+ {
+ LogWarn(@"Error enabling non-blocking IO on accepted socket (fcntl)");
+ return NO;
+ }
+
+ // Prevent SIGPIPE signals
+
+ int nosigpipe = 1;
+ setsockopt(childSocketFD, SOL_SOCKET, SO_NOSIGPIPE, &nosigpipe, sizeof(nosigpipe));
+
+ // Notify delegate
+
+ if (delegateQueue)
+ {
+ __strong id theDelegate = delegate;
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ // Query delegate for custom socket queue
+
+ dispatch_queue_t childSocketQueue = NULL;
+
+ if ([theDelegate respondsToSelector:@selector(newSocketQueueForConnectionFromAddress:onSocket:)])
+ {
+ childSocketQueue = [theDelegate newSocketQueueForConnectionFromAddress:childSocketAddress
+ onSocket:self];
+ }
+
+ // Create GCDAsyncSocket instance for accepted socket
+
+ GCDAsyncSocket *acceptedSocket = [[[self class] alloc] initWithDelegate:theDelegate
+ delegateQueue:delegateQueue
+ socketQueue:childSocketQueue];
+
+ if (socketType == 0)
+ acceptedSocket->socket4FD = childSocketFD;
+ else if (socketType == 1)
+ acceptedSocket->socket6FD = childSocketFD;
+ else
+ acceptedSocket->socketUN = childSocketFD;
+
+ acceptedSocket->flags = (kSocketStarted | kConnected);
+
+ // Setup read and write sources for accepted socket
+
+ dispatch_async(acceptedSocket->socketQueue, ^{ @autoreleasepool {
+
+ [acceptedSocket setupReadAndWriteSourcesForNewlyConnectedSocket:childSocketFD];
+ }});
+
+ // Notify delegate
+
+ if ([theDelegate respondsToSelector:@selector(socket:didAcceptNewSocket:)])
+ {
+ [theDelegate socket:self didAcceptNewSocket:acceptedSocket];
+ }
+
+ // Release the socket queue returned from the delegate (it was retained by acceptedSocket)
+ #if !OS_OBJECT_USE_OBJC
+ if (childSocketQueue) dispatch_release(childSocketQueue);
+ #endif
+
+ // The accepted socket should have been retained by the delegate.
+ // Otherwise it gets properly released when exiting the block.
+ }});
+ }
+
+ return YES;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Connecting
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * This method runs through the various checks required prior to a connection attempt.
+ * It is shared between the connectToHost and connectToAddress methods.
+ *
+**/
+- (BOOL)preConnectWithInterface:(NSString *)interface error:(NSError **)errPtr
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ if (delegate == nil) // Must have delegate set
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Attempting to connect without a delegate. Set a delegate first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ if (delegateQueue == NULL) // Must have delegate queue set
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Attempting to connect without a delegate queue. Set a delegate queue first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ if (![self isDisconnected]) // Must be disconnected
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Attempting to connect while connected or accepting connections. Disconnect first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ BOOL isIPv4Disabled = (config & kIPv4Disabled) ? YES : NO;
+ BOOL isIPv6Disabled = (config & kIPv6Disabled) ? YES : NO;
+
+ if (isIPv4Disabled && isIPv6Disabled) // Must have IPv4 or IPv6 enabled
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Both IPv4 and IPv6 have been disabled. Must enable at least one protocol first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ if (interface)
+ {
+ NSMutableData *interface4 = nil;
+ NSMutableData *interface6 = nil;
+
+ [self getInterfaceAddress4:&interface4 address6:&interface6 fromDescription:interface port:0];
+
+ if ((interface4 == nil) && (interface6 == nil))
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Unknown interface. Specify valid interface by name (e.g. \"en1\") or IP address.";
+ *errPtr = [self badParamError:msg];
+ }
+ return NO;
+ }
+
+ if (isIPv4Disabled && (interface6 == nil))
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"IPv4 has been disabled and specified interface doesn't support IPv6.";
+ *errPtr = [self badParamError:msg];
+ }
+ return NO;
+ }
+
+ if (isIPv6Disabled && (interface4 == nil))
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"IPv6 has been disabled and specified interface doesn't support IPv4.";
+ *errPtr = [self badParamError:msg];
+ }
+ return NO;
+ }
+
+ connectInterface4 = interface4;
+ connectInterface6 = interface6;
+ }
+
+ // Clear queues (spurious read/write requests post disconnect)
+ [readQueue removeAllObjects];
+ [writeQueue removeAllObjects];
+
+ return YES;
+}
+
+- (BOOL)preConnectWithUrl:(NSURL *)url error:(NSError **)errPtr
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ if (delegate == nil) // Must have delegate set
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Attempting to connect without a delegate. Set a delegate first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ if (delegateQueue == NULL) // Must have delegate queue set
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Attempting to connect without a delegate queue. Set a delegate queue first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ if (![self isDisconnected]) // Must be disconnected
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Attempting to connect while connected or accepting connections. Disconnect first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ NSData *interface = [self getInterfaceAddressFromUrl:url];
+
+ if (interface == nil)
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Unknown interface. Specify valid interface by name (e.g. \"en1\") or IP address.";
+ *errPtr = [self badParamError:msg];
+ }
+ return NO;
+ }
+
+ connectInterfaceUN = interface;
+
+ // Clear queues (spurious read/write requests post disconnect)
+ [readQueue removeAllObjects];
+ [writeQueue removeAllObjects];
+
+ return YES;
+}
+
+- (BOOL)connectToHost:(NSString*)host onPort:(uint16_t)port error:(NSError **)errPtr
+{
+ return [self connectToHost:host onPort:port withTimeout:-1 error:errPtr];
+}
+
+- (BOOL)connectToHost:(NSString *)host
+ onPort:(uint16_t)port
+ withTimeout:(NSTimeInterval)timeout
+ error:(NSError **)errPtr
+{
+ return [self connectToHost:host onPort:port viaInterface:nil withTimeout:timeout error:errPtr];
+}
+
+- (BOOL)connectToHost:(NSString *)inHost
+ onPort:(uint16_t)port
+ viaInterface:(NSString *)inInterface
+ withTimeout:(NSTimeInterval)timeout
+ error:(NSError **)errPtr
+{
+ LogTrace();
+
+ // Just in case immutable objects were passed
+ NSString *host = [inHost copy];
+ NSString *interface = [inInterface copy];
+
+ __block BOOL result = NO;
+ __block NSError *preConnectErr = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ // Check for problems with host parameter
+
+ if ([host length] == 0)
+ {
+ NSString *msg = @"Invalid host parameter (nil or \"\"). Should be a domain name or IP address string.";
+ preConnectErr = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Run through standard pre-connect checks
+
+ if (![self preConnectWithInterface:interface error:&preConnectErr])
+ {
+ return_from_block;
+ }
+
+ // We've made it past all the checks.
+ // It's time to start the connection process.
+
+ flags |= kSocketStarted;
+
+ LogVerbose(@"Dispatching DNS lookup...");
+
+ // It's possible that the given host parameter is actually a NSMutableString.
+ // So we want to copy it now, within this block that will be executed synchronously.
+ // This way the asynchronous lookup block below doesn't have to worry about it changing.
+
+ NSString *hostCpy = [host copy];
+
+ int aStateIndex = stateIndex;
+ __weak GCDAsyncSocket *weakSelf = self;
+
+ dispatch_queue_t globalConcurrentQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
+ dispatch_async(globalConcurrentQueue, ^{ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ NSError *lookupErr = nil;
+ NSMutableArray *addresses = [[self class] lookupHost:hostCpy port:port error:&lookupErr];
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf == nil) return_from_block;
+
+ if (lookupErr)
+ {
+ dispatch_async(strongSelf->socketQueue, ^{ @autoreleasepool {
+
+ [strongSelf lookup:aStateIndex didFail:lookupErr];
+ }});
+ }
+ else
+ {
+ NSData *address4 = nil;
+ NSData *address6 = nil;
+
+ for (NSData *address in addresses)
+ {
+ if (!address4 && [[self class] isIPv4Address:address])
+ {
+ address4 = address;
+ }
+ else if (!address6 && [[self class] isIPv6Address:address])
+ {
+ address6 = address;
+ }
+ }
+
+ dispatch_async(strongSelf->socketQueue, ^{ @autoreleasepool {
+
+ [strongSelf lookup:aStateIndex didSucceedWithAddress4:address4 address6:address6];
+ }});
+ }
+
+ #pragma clang diagnostic pop
+ }});
+
+ [self startConnectTimeout:timeout];
+
+ result = YES;
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+
+ if (errPtr) *errPtr = preConnectErr;
+ return result;
+}
+
+- (BOOL)connectToAddress:(NSData *)remoteAddr error:(NSError **)errPtr
+{
+ return [self connectToAddress:remoteAddr viaInterface:nil withTimeout:-1 error:errPtr];
+}
+
+- (BOOL)connectToAddress:(NSData *)remoteAddr withTimeout:(NSTimeInterval)timeout error:(NSError **)errPtr
+{
+ return [self connectToAddress:remoteAddr viaInterface:nil withTimeout:timeout error:errPtr];
+}
+
+- (BOOL)connectToAddress:(NSData *)inRemoteAddr
+ viaInterface:(NSString *)inInterface
+ withTimeout:(NSTimeInterval)timeout
+ error:(NSError **)errPtr
+{
+ LogTrace();
+
+ // Just in case immutable objects were passed
+ NSData *remoteAddr = [inRemoteAddr copy];
+ NSString *interface = [inInterface copy];
+
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ // Check for problems with remoteAddr parameter
+
+ NSData *address4 = nil;
+ NSData *address6 = nil;
+
+ if ([remoteAddr length] >= sizeof(struct sockaddr))
+ {
+ const struct sockaddr *sockaddr = (const struct sockaddr *)[remoteAddr bytes];
+
+ if (sockaddr->sa_family == AF_INET)
+ {
+ if ([remoteAddr length] == sizeof(struct sockaddr_in))
+ {
+ address4 = remoteAddr;
+ }
+ }
+ else if (sockaddr->sa_family == AF_INET6)
+ {
+ if ([remoteAddr length] == sizeof(struct sockaddr_in6))
+ {
+ address6 = remoteAddr;
+ }
+ }
+ }
+
+ if ((address4 == nil) && (address6 == nil))
+ {
+ NSString *msg = @"A valid IPv4 or IPv6 address was not given";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ BOOL isIPv4Disabled = (config & kIPv4Disabled) ? YES : NO;
+ BOOL isIPv6Disabled = (config & kIPv6Disabled) ? YES : NO;
+
+ if (isIPv4Disabled && (address4 != nil))
+ {
+ NSString *msg = @"IPv4 has been disabled and an IPv4 address was passed.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ if (isIPv6Disabled && (address6 != nil))
+ {
+ NSString *msg = @"IPv6 has been disabled and an IPv6 address was passed.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Run through standard pre-connect checks
+
+ if (![self preConnectWithInterface:interface error:&err])
+ {
+ return_from_block;
+ }
+
+ // We've made it past all the checks.
+ // It's time to start the connection process.
+
+ if (![self connectWithAddress4:address4 address6:address6 error:&err])
+ {
+ return_from_block;
+ }
+
+ flags |= kSocketStarted;
+
+ [self startConnectTimeout:timeout];
+
+ result = YES;
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (result == NO)
+ {
+ if (errPtr)
+ *errPtr = err;
+ }
+
+ return result;
+}
+
+- (BOOL)connectToUrl:(NSURL *)url withTimeout:(NSTimeInterval)timeout error:(NSError **)errPtr;
+{
+ LogTrace();
+
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ // Check for problems with host parameter
+
+ if ([url.path length] == 0)
+ {
+ NSString *msg = @"Invalid unix domain socket url.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Run through standard pre-connect checks
+
+ if (![self preConnectWithUrl:url error:&err])
+ {
+ return_from_block;
+ }
+
+ // We've made it past all the checks.
+ // It's time to start the connection process.
+
+ flags |= kSocketStarted;
+
+ // Start the normal connection process
+
+ NSError *connectError = nil;
+ if (![self connectWithAddressUN:connectInterfaceUN error:&connectError])
+ {
+ [self closeWithError:connectError];
+
+ return_from_block;
+ }
+
+ [self startConnectTimeout:timeout];
+
+ result = YES;
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (result == NO)
+ {
+ if (errPtr)
+ *errPtr = err;
+ }
+
+ return result;
+}
+
+- (void)lookup:(int)aStateIndex didSucceedWithAddress4:(NSData *)address4 address6:(NSData *)address6
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert(address4 || address6, @"Expected at least one valid address");
+
+ if (aStateIndex != stateIndex)
+ {
+ LogInfo(@"Ignoring lookupDidSucceed, already disconnected");
+
+ // The connect operation has been cancelled.
+ // That is, socket was disconnected, or connection has already timed out.
+ return;
+ }
+
+ // Check for problems
+
+ BOOL isIPv4Disabled = (config & kIPv4Disabled) ? YES : NO;
+ BOOL isIPv6Disabled = (config & kIPv6Disabled) ? YES : NO;
+
+ if (isIPv4Disabled && (address6 == nil))
+ {
+ NSString *msg = @"IPv4 has been disabled and DNS lookup found no IPv6 address.";
+
+ [self closeWithError:[self otherError:msg]];
+ return;
+ }
+
+ if (isIPv6Disabled && (address4 == nil))
+ {
+ NSString *msg = @"IPv6 has been disabled and DNS lookup found no IPv4 address.";
+
+ [self closeWithError:[self otherError:msg]];
+ return;
+ }
+
+ // Start the normal connection process
+
+ NSError *err = nil;
+ if (![self connectWithAddress4:address4 address6:address6 error:&err])
+ {
+ [self closeWithError:err];
+ }
+}
+
+/**
+ * This method is called if the DNS lookup fails.
+ * This method is executed on the socketQueue.
+ *
+ * Since the DNS lookup executed synchronously on a global concurrent queue,
+ * the original connection request may have already been cancelled or timed-out by the time this method is invoked.
+ * The lookupIndex tells us whether the lookup is still valid or not.
+**/
+- (void)lookup:(int)aStateIndex didFail:(NSError *)error
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+
+ if (aStateIndex != stateIndex)
+ {
+ LogInfo(@"Ignoring lookup:didFail: - already disconnected");
+
+ // The connect operation has been cancelled.
+ // That is, socket was disconnected, or connection has already timed out.
+ return;
+ }
+
+ [self endConnectTimeout];
+ [self closeWithError:error];
+}
+
+- (BOOL)bindSocket:(int)socketFD toInterface:(NSData *)connectInterface error:(NSError **)errPtr
+{
+ // Bind the socket to the desired interface (if needed)
+
+ if (connectInterface)
+ {
+ LogVerbose(@"Binding socket...");
+
+ if ([[self class] portFromAddress:connectInterface] > 0)
+ {
+ // Since we're going to be binding to a specific port,
+ // we should turn on reuseaddr to allow us to override sockets in time_wait.
+
+ int reuseOn = 1;
+ setsockopt(socketFD, SOL_SOCKET, SO_REUSEADDR, &reuseOn, sizeof(reuseOn));
+ }
+
+ const struct sockaddr *interfaceAddr = (const struct sockaddr *)[connectInterface bytes];
+
+ int result = bind(socketFD, interfaceAddr, (socklen_t)[connectInterface length]);
+ if (result != 0)
+ {
+ if (errPtr)
+ *errPtr = [self errnoErrorWithReason:@"Error in bind() function"];
+
+ return NO;
+ }
+ }
+
+ return YES;
+}
+
+- (int)createSocket:(int)family connectInterface:(NSData *)connectInterface errPtr:(NSError **)errPtr
+{
+ int socketFD = socket(family, SOCK_STREAM, 0);
+
+ if (socketFD == SOCKET_NULL)
+ {
+ if (errPtr)
+ *errPtr = [self errnoErrorWithReason:@"Error in socket() function"];
+
+ return socketFD;
+ }
+
+ if (![self bindSocket:socketFD toInterface:connectInterface error:errPtr])
+ {
+ [self closeSocket:socketFD];
+
+ return SOCKET_NULL;
+ }
+
+ // Prevent SIGPIPE signals
+
+ int nosigpipe = 1;
+ setsockopt(socketFD, SOL_SOCKET, SO_NOSIGPIPE, &nosigpipe, sizeof(nosigpipe));
+
+ return socketFD;
+}
+
+- (void)connectSocket:(int)socketFD address:(NSData *)address stateIndex:(int)aStateIndex
+{
+ // If there already is a socket connected, we close socketFD and return
+ if (self.isConnected)
+ {
+ [self closeSocket:socketFD];
+ return;
+ }
+
+ // Start the connection process in a background queue
+
+ __weak GCDAsyncSocket *weakSelf = self;
+
+ dispatch_queue_t globalConcurrentQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
+ dispatch_async(globalConcurrentQueue, ^{
+#pragma clang diagnostic push
+#pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ int result = connect(socketFD, (const struct sockaddr *)[address bytes], (socklen_t)[address length]);
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf == nil) return_from_block;
+
+ dispatch_async(strongSelf->socketQueue, ^{ @autoreleasepool {
+
+ if (strongSelf.isConnected)
+ {
+ [strongSelf closeSocket:socketFD];
+ return_from_block;
+ }
+
+ if (result == 0)
+ {
+ [self closeUnusedSocket:socketFD];
+
+ [strongSelf didConnect:aStateIndex];
+ }
+ else
+ {
+ [strongSelf closeSocket:socketFD];
+
+ // If there are no more sockets trying to connect, we inform the error to the delegate
+ if (strongSelf.socket4FD == SOCKET_NULL && strongSelf.socket6FD == SOCKET_NULL)
+ {
+ NSError *error = [strongSelf errnoErrorWithReason:@"Error in connect() function"];
+ [strongSelf didNotConnect:aStateIndex error:error];
+ }
+ }
+ }});
+
+#pragma clang diagnostic pop
+ });
+
+ LogVerbose(@"Connecting...");
+}
+
+- (void)closeSocket:(int)socketFD
+{
+ if (socketFD != SOCKET_NULL &&
+ (socketFD == socket6FD || socketFD == socket4FD))
+ {
+ close(socketFD);
+
+ if (socketFD == socket4FD)
+ {
+ LogVerbose(@"close(socket4FD)");
+ socket4FD = SOCKET_NULL;
+ }
+ else if (socketFD == socket6FD)
+ {
+ LogVerbose(@"close(socket6FD)");
+ socket6FD = SOCKET_NULL;
+ }
+ }
+}
+
+- (void)closeUnusedSocket:(int)usedSocketFD
+{
+ if (usedSocketFD != socket4FD)
+ {
+ [self closeSocket:socket4FD];
+ }
+ else if (usedSocketFD != socket6FD)
+ {
+ [self closeSocket:socket6FD];
+ }
+}
+
+- (BOOL)connectWithAddress4:(NSData *)address4 address6:(NSData *)address6 error:(NSError **)errPtr
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ LogVerbose(@"IPv4: %@:%hu", [[self class] hostFromAddress:address4], [[self class] portFromAddress:address4]);
+ LogVerbose(@"IPv6: %@:%hu", [[self class] hostFromAddress:address6], [[self class] portFromAddress:address6]);
+
+ // Determine socket type
+
+ BOOL preferIPv6 = (config & kPreferIPv6) ? YES : NO;
+
+ // Create and bind the sockets
+
+ if (address4)
+ {
+ LogVerbose(@"Creating IPv4 socket");
+
+ socket4FD = [self createSocket:AF_INET connectInterface:connectInterface4 errPtr:errPtr];
+ }
+
+ if (address6)
+ {
+ LogVerbose(@"Creating IPv6 socket");
+
+ socket6FD = [self createSocket:AF_INET6 connectInterface:connectInterface6 errPtr:errPtr];
+ }
+
+ if (socket4FD == SOCKET_NULL && socket6FD == SOCKET_NULL)
+ {
+ return NO;
+ }
+
+ int socketFD, alternateSocketFD;
+ NSData *address, *alternateAddress;
+
+ if ((preferIPv6 && socket6FD != SOCKET_NULL) || socket4FD == SOCKET_NULL)
+ {
+ socketFD = socket6FD;
+ alternateSocketFD = socket4FD;
+ address = address6;
+ alternateAddress = address4;
+ }
+ else
+ {
+ socketFD = socket4FD;
+ alternateSocketFD = socket6FD;
+ address = address4;
+ alternateAddress = address6;
+ }
+
+ int aStateIndex = stateIndex;
+
+ [self connectSocket:socketFD address:address stateIndex:aStateIndex];
+
+ if (alternateAddress)
+ {
+ dispatch_after(dispatch_time(DISPATCH_TIME_NOW, (int64_t)(alternateAddressDelay * NSEC_PER_SEC)), socketQueue, ^{
+ [self connectSocket:alternateSocketFD address:alternateAddress stateIndex:aStateIndex];
+ });
+ }
+
+ return YES;
+}
+
+- (BOOL)connectWithAddressUN:(NSData *)address error:(NSError **)errPtr
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ // Create the socket
+
+ int socketFD;
+
+ LogVerbose(@"Creating unix domain socket");
+
+ socketUN = socket(AF_UNIX, SOCK_STREAM, 0);
+
+ socketFD = socketUN;
+
+ if (socketFD == SOCKET_NULL)
+ {
+ if (errPtr)
+ *errPtr = [self errnoErrorWithReason:@"Error in socket() function"];
+
+ return NO;
+ }
+
+ // Bind the socket to the desired interface (if needed)
+
+ LogVerbose(@"Binding socket...");
+
+ int reuseOn = 1;
+ setsockopt(socketFD, SOL_SOCKET, SO_REUSEADDR, &reuseOn, sizeof(reuseOn));
+
+// const struct sockaddr *interfaceAddr = (const struct sockaddr *)[address bytes];
+//
+// int result = bind(socketFD, interfaceAddr, (socklen_t)[address length]);
+// if (result != 0)
+// {
+// if (errPtr)
+// *errPtr = [self errnoErrorWithReason:@"Error in bind() function"];
+//
+// return NO;
+// }
+
+ // Prevent SIGPIPE signals
+
+ int nosigpipe = 1;
+ setsockopt(socketFD, SOL_SOCKET, SO_NOSIGPIPE, &nosigpipe, sizeof(nosigpipe));
+
+ // Start the connection process in a background queue
+
+ int aStateIndex = stateIndex;
+
+ dispatch_queue_t globalConcurrentQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
+ dispatch_async(globalConcurrentQueue, ^{
+
+ const struct sockaddr *addr = (const struct sockaddr *)[address bytes];
+ int result = connect(socketFD, addr, addr->sa_len);
+ if (result == 0)
+ {
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ [self didConnect:aStateIndex];
+ }});
+ }
+ else
+ {
+ // TODO: Bad file descriptor
+ perror("connect");
+ NSError *error = [self errnoErrorWithReason:@"Error in connect() function"];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ [self didNotConnect:aStateIndex error:error];
+ }});
+ }
+ });
+
+ LogVerbose(@"Connecting...");
+
+ return YES;
+}
+
+- (void)didConnect:(int)aStateIndex
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+
+ if (aStateIndex != stateIndex)
+ {
+ LogInfo(@"Ignoring didConnect, already disconnected");
+
+ // The connect operation has been cancelled.
+ // That is, socket was disconnected, or connection has already timed out.
+ return;
+ }
+
+ flags |= kConnected;
+
+ [self endConnectTimeout];
+
+ #if TARGET_OS_IPHONE
+ // The endConnectTimeout method executed above incremented the stateIndex.
+ aStateIndex = stateIndex;
+ #endif
+
+ // Setup read/write streams (as workaround for specific shortcomings in the iOS platform)
+ //
+ // Note:
+ // There may be configuration options that must be set by the delegate before opening the streams.
+ // The primary example is the kCFStreamNetworkServiceTypeVoIP flag, which only works on an unopened stream.
+ //
+ // Thus we wait until after the socket:didConnectToHost:port: delegate method has completed.
+ // This gives the delegate time to properly configure the streams if needed.
+
+ dispatch_block_t SetupStreamsPart1 = ^{
+ #if TARGET_OS_IPHONE
+
+ if (![self createReadAndWriteStream])
+ {
+ [self closeWithError:[self otherError:@"Error creating CFStreams"]];
+ return;
+ }
+
+ if (![self registerForStreamCallbacksIncludingReadWrite:NO])
+ {
+ [self closeWithError:[self otherError:@"Error in CFStreamSetClient"]];
+ return;
+ }
+
+ #endif
+ };
+ dispatch_block_t SetupStreamsPart2 = ^{
+ #if TARGET_OS_IPHONE
+
+ if (aStateIndex != stateIndex)
+ {
+ // The socket has been disconnected.
+ return;
+ }
+
+ if (![self addStreamsToRunLoop])
+ {
+ [self closeWithError:[self otherError:@"Error in CFStreamScheduleWithRunLoop"]];
+ return;
+ }
+
+ if (![self openStreams])
+ {
+ [self closeWithError:[self otherError:@"Error creating CFStreams"]];
+ return;
+ }
+
+ #endif
+ };
+
+ // Notify delegate
+
+ NSString *host = [self connectedHost];
+ uint16_t port = [self connectedPort];
+ NSURL *url = [self connectedUrl];
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && host != nil && [theDelegate respondsToSelector:@selector(socket:didConnectToHost:port:)])
+ {
+ SetupStreamsPart1();
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socket:self didConnectToHost:host port:port];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ SetupStreamsPart2();
+ }});
+ }});
+ }
+ else if (delegateQueue && url != nil && [theDelegate respondsToSelector:@selector(socket:didConnectToUrl:)])
+ {
+ SetupStreamsPart1();
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socket:self didConnectToUrl:url];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ SetupStreamsPart2();
+ }});
+ }});
+ }
+ else
+ {
+ SetupStreamsPart1();
+ SetupStreamsPart2();
+ }
+
+ // Get the connected socket
+
+ int socketFD = (socket4FD != SOCKET_NULL) ? socket4FD : (socket6FD != SOCKET_NULL) ? socket6FD : socketUN;
+
+ // Enable non-blocking IO on the socket
+
+ int result = fcntl(socketFD, F_SETFL, O_NONBLOCK);
+ if (result == -1)
+ {
+ NSString *errMsg = @"Error enabling non-blocking IO on socket (fcntl)";
+ [self closeWithError:[self otherError:errMsg]];
+
+ return;
+ }
+
+ // Setup our read/write sources
+
+ [self setupReadAndWriteSourcesForNewlyConnectedSocket:socketFD];
+
+ // Dequeue any pending read/write requests
+
+ [self maybeDequeueRead];
+ [self maybeDequeueWrite];
+}
+
+- (void)didNotConnect:(int)aStateIndex error:(NSError *)error
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+
+ if (aStateIndex != stateIndex)
+ {
+ LogInfo(@"Ignoring didNotConnect, already disconnected");
+
+ // The connect operation has been cancelled.
+ // That is, socket was disconnected, or connection has already timed out.
+ return;
+ }
+
+ [self closeWithError:error];
+}
+
+- (void)startConnectTimeout:(NSTimeInterval)timeout
+{
+ if (timeout >= 0.0)
+ {
+ connectTimer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, socketQueue);
+
+ __weak GCDAsyncSocket *weakSelf = self;
+
+ dispatch_source_set_event_handler(connectTimer, ^{ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf == nil) return_from_block;
+
+ [strongSelf doConnectTimeout];
+
+ #pragma clang diagnostic pop
+ }});
+
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_source_t theConnectTimer = connectTimer;
+ dispatch_source_set_cancel_handler(connectTimer, ^{
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ LogVerbose(@"dispatch_release(connectTimer)");
+ dispatch_release(theConnectTimer);
+
+ #pragma clang diagnostic pop
+ });
+ #endif
+
+ dispatch_time_t tt = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(timeout * NSEC_PER_SEC));
+ dispatch_source_set_timer(connectTimer, tt, DISPATCH_TIME_FOREVER, 0);
+
+ dispatch_resume(connectTimer);
+ }
+}
+
+- (void)endConnectTimeout
+{
+ LogTrace();
+
+ if (connectTimer)
+ {
+ dispatch_source_cancel(connectTimer);
+ connectTimer = NULL;
+ }
+
+ // Increment stateIndex.
+ // This will prevent us from processing results from any related background asynchronous operations.
+ //
+ // Note: This should be called from close method even if connectTimer is NULL.
+ // This is because one might disconnect a socket prior to a successful connection which had no timeout.
+
+ stateIndex++;
+
+ if (connectInterface4)
+ {
+ connectInterface4 = nil;
+ }
+ if (connectInterface6)
+ {
+ connectInterface6 = nil;
+ }
+}
+
+- (void)doConnectTimeout
+{
+ LogTrace();
+
+ [self endConnectTimeout];
+ [self closeWithError:[self connectTimeoutError]];
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Disconnecting
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (void)closeWithError:(NSError *)error
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ [self endConnectTimeout];
+
+ if (currentRead != nil) [self endCurrentRead];
+ if (currentWrite != nil) [self endCurrentWrite];
+
+ [readQueue removeAllObjects];
+ [writeQueue removeAllObjects];
+
+ [preBuffer reset];
+
+ #if TARGET_OS_IPHONE
+ {
+ if (readStream || writeStream)
+ {
+ [self removeStreamsFromRunLoop];
+
+ if (readStream)
+ {
+ CFReadStreamSetClient(readStream, kCFStreamEventNone, NULL, NULL);
+ CFReadStreamClose(readStream);
+ CFRelease(readStream);
+ readStream = NULL;
+ }
+ if (writeStream)
+ {
+ CFWriteStreamSetClient(writeStream, kCFStreamEventNone, NULL, NULL);
+ CFWriteStreamClose(writeStream);
+ CFRelease(writeStream);
+ writeStream = NULL;
+ }
+ }
+ }
+ #endif
+
+ [sslPreBuffer reset];
+ sslErrCode = lastSSLHandshakeError = noErr;
+
+ if (sslContext)
+ {
+ // Getting a linker error here about the SSLx() functions?
+ // You need to add the Security Framework to your application.
+
+ SSLClose(sslContext);
+
+ #if TARGET_OS_IPHONE || (__MAC_OS_X_VERSION_MIN_REQUIRED >= 1080)
+ CFRelease(sslContext);
+ #else
+ SSLDisposeContext(sslContext);
+ #endif
+
+ sslContext = NULL;
+ }
+
+ // For some crazy reason (in my opinion), cancelling a dispatch source doesn't
+ // invoke the cancel handler if the dispatch source is paused.
+ // So we have to unpause the source if needed.
+ // This allows the cancel handler to be run, which in turn releases the source and closes the socket.
+
+ if (!accept4Source && !accept6Source && !acceptUNSource && !readSource && !writeSource)
+ {
+ LogVerbose(@"manually closing close");
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ LogVerbose(@"close(socket4FD)");
+ close(socket4FD);
+ socket4FD = SOCKET_NULL;
+ }
+
+ if (socket6FD != SOCKET_NULL)
+ {
+ LogVerbose(@"close(socket6FD)");
+ close(socket6FD);
+ socket6FD = SOCKET_NULL;
+ }
+
+ if (socketUN != SOCKET_NULL)
+ {
+ LogVerbose(@"close(socketUN)");
+ close(socketUN);
+ socketUN = SOCKET_NULL;
+ unlink(socketUrl.path.fileSystemRepresentation);
+ socketUrl = nil;
+ }
+ }
+ else
+ {
+ if (accept4Source)
+ {
+ LogVerbose(@"dispatch_source_cancel(accept4Source)");
+ dispatch_source_cancel(accept4Source);
+
+ // We never suspend accept4Source
+
+ accept4Source = NULL;
+ }
+
+ if (accept6Source)
+ {
+ LogVerbose(@"dispatch_source_cancel(accept6Source)");
+ dispatch_source_cancel(accept6Source);
+
+ // We never suspend accept6Source
+
+ accept6Source = NULL;
+ }
+
+ if (acceptUNSource)
+ {
+ LogVerbose(@"dispatch_source_cancel(acceptUNSource)");
+ dispatch_source_cancel(acceptUNSource);
+
+ // We never suspend acceptUNSource
+
+ acceptUNSource = NULL;
+ }
+
+ if (readSource)
+ {
+ LogVerbose(@"dispatch_source_cancel(readSource)");
+ dispatch_source_cancel(readSource);
+
+ [self resumeReadSource];
+
+ readSource = NULL;
+ }
+
+ if (writeSource)
+ {
+ LogVerbose(@"dispatch_source_cancel(writeSource)");
+ dispatch_source_cancel(writeSource);
+
+ [self resumeWriteSource];
+
+ writeSource = NULL;
+ }
+
+ // The sockets will be closed by the cancel handlers of the corresponding source
+
+ socket4FD = SOCKET_NULL;
+ socket6FD = SOCKET_NULL;
+ socketUN = SOCKET_NULL;
+ }
+
+ // If the client has passed the connect/accept method, then the connection has at least begun.
+ // Notify delegate that it is now ending.
+ BOOL shouldCallDelegate = (flags & kSocketStarted) ? YES : NO;
+ BOOL isDeallocating = (flags & kDealloc) ? YES : NO;
+
+ // Clear stored socket info and all flags (config remains as is)
+ socketFDBytesAvailable = 0;
+ flags = 0;
+ sslWriteCachedLength = 0;
+
+ if (shouldCallDelegate)
+ {
+ __strong id theDelegate = delegate;
+ __strong id theSelf = isDeallocating ? nil : self;
+
+ if (delegateQueue && [theDelegate respondsToSelector: @selector(socketDidDisconnect:withError:)])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socketDidDisconnect:theSelf withError:error];
+ }});
+ }
+ }
+}
+
+- (void)disconnect
+{
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ if (flags & kSocketStarted)
+ {
+ [self closeWithError:nil];
+ }
+ }};
+
+ // Synchronous disconnection, as documented in the header file
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+}
+
+- (void)disconnectAfterReading
+{
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ if (flags & kSocketStarted)
+ {
+ flags |= (kForbidReadsWrites | kDisconnectAfterReads);
+ [self maybeClose];
+ }
+ }});
+}
+
+- (void)disconnectAfterWriting
+{
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ if (flags & kSocketStarted)
+ {
+ flags |= (kForbidReadsWrites | kDisconnectAfterWrites);
+ [self maybeClose];
+ }
+ }});
+}
+
+- (void)disconnectAfterReadingAndWriting
+{
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ if (flags & kSocketStarted)
+ {
+ flags |= (kForbidReadsWrites | kDisconnectAfterReads | kDisconnectAfterWrites);
+ [self maybeClose];
+ }
+ }});
+}
+
+/**
+ * Closes the socket if possible.
+ * That is, if all writes have completed, and we're set to disconnect after writing,
+ * or if all reads have completed, and we're set to disconnect after reading.
+**/
+- (void)maybeClose
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ BOOL shouldClose = NO;
+
+ if (flags & kDisconnectAfterReads)
+ {
+ if (([readQueue count] == 0) && (currentRead == nil))
+ {
+ if (flags & kDisconnectAfterWrites)
+ {
+ if (([writeQueue count] == 0) && (currentWrite == nil))
+ {
+ shouldClose = YES;
+ }
+ }
+ else
+ {
+ shouldClose = YES;
+ }
+ }
+ }
+ else if (flags & kDisconnectAfterWrites)
+ {
+ if (([writeQueue count] == 0) && (currentWrite == nil))
+ {
+ shouldClose = YES;
+ }
+ }
+
+ if (shouldClose)
+ {
+ [self closeWithError:nil];
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Errors
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (NSError *)badConfigError:(NSString *)errMsg
+{
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncSocketErrorDomain code:GCDAsyncSocketBadConfigError userInfo:userInfo];
+}
+
+- (NSError *)badParamError:(NSString *)errMsg
+{
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncSocketErrorDomain code:GCDAsyncSocketBadParamError userInfo:userInfo];
+}
+
++ (NSError *)gaiError:(int)gai_error
+{
+ NSString *errMsg = [NSString stringWithCString:gai_strerror(gai_error) encoding:NSASCIIStringEncoding];
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:@"kCFStreamErrorDomainNetDB" code:gai_error userInfo:userInfo];
+}
+
+- (NSError *)errnoErrorWithReason:(NSString *)reason
+{
+ NSString *errMsg = [NSString stringWithUTF8String:strerror(errno)];
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObjectsAndKeys:errMsg, NSLocalizedDescriptionKey,
+ reason, NSLocalizedFailureReasonErrorKey, nil];
+
+ return [NSError errorWithDomain:NSPOSIXErrorDomain code:errno userInfo:userInfo];
+}
+
+- (NSError *)errnoError
+{
+ NSString *errMsg = [NSString stringWithUTF8String:strerror(errno)];
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:NSPOSIXErrorDomain code:errno userInfo:userInfo];
+}
+
+- (NSError *)sslError:(OSStatus)ssl_error
+{
+ NSString *msg = @"Error code definition can be found in Apple's SecureTransport.h";
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:msg forKey:NSLocalizedRecoverySuggestionErrorKey];
+
+ return [NSError errorWithDomain:@"kCFStreamErrorDomainSSL" code:ssl_error userInfo:userInfo];
+}
+
+- (NSError *)connectTimeoutError
+{
+ NSString *errMsg = NSLocalizedStringWithDefaultValue(@"GCDAsyncSocketConnectTimeoutError",
+ @"GCDAsyncSocket", [NSBundle mainBundle],
+ @"Attempt to connect to host timed out", nil);
+
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncSocketErrorDomain code:GCDAsyncSocketConnectTimeoutError userInfo:userInfo];
+}
+
+/**
+ * Returns a standard AsyncSocket maxed out error.
+**/
+- (NSError *)readMaxedOutError
+{
+ NSString *errMsg = NSLocalizedStringWithDefaultValue(@"GCDAsyncSocketReadMaxedOutError",
+ @"GCDAsyncSocket", [NSBundle mainBundle],
+ @"Read operation reached set maximum length", nil);
+
+ NSDictionary *info = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncSocketErrorDomain code:GCDAsyncSocketReadMaxedOutError userInfo:info];
+}
+
+/**
+ * Returns a standard AsyncSocket write timeout error.
+**/
+- (NSError *)readTimeoutError
+{
+ NSString *errMsg = NSLocalizedStringWithDefaultValue(@"GCDAsyncSocketReadTimeoutError",
+ @"GCDAsyncSocket", [NSBundle mainBundle],
+ @"Read operation timed out", nil);
+
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncSocketErrorDomain code:GCDAsyncSocketReadTimeoutError userInfo:userInfo];
+}
+
+/**
+ * Returns a standard AsyncSocket write timeout error.
+**/
+- (NSError *)writeTimeoutError
+{
+ NSString *errMsg = NSLocalizedStringWithDefaultValue(@"GCDAsyncSocketWriteTimeoutError",
+ @"GCDAsyncSocket", [NSBundle mainBundle],
+ @"Write operation timed out", nil);
+
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncSocketErrorDomain code:GCDAsyncSocketWriteTimeoutError userInfo:userInfo];
+}
+
+- (NSError *)connectionClosedError
+{
+ NSString *errMsg = NSLocalizedStringWithDefaultValue(@"GCDAsyncSocketClosedError",
+ @"GCDAsyncSocket", [NSBundle mainBundle],
+ @"Socket closed by remote peer", nil);
+
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncSocketErrorDomain code:GCDAsyncSocketClosedError userInfo:userInfo];
+}
+
+- (NSError *)otherError:(NSString *)errMsg
+{
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncSocketErrorDomain code:GCDAsyncSocketOtherError userInfo:userInfo];
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Diagnostics
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (BOOL)isDisconnected
+{
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+ result = (flags & kSocketStarted) ? NO : YES;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (BOOL)isConnected
+{
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+ result = (flags & kConnected) ? YES : NO;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (NSString *)connectedHost
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ if (socket4FD != SOCKET_NULL)
+ return [self connectedHostFromSocket4:socket4FD];
+ if (socket6FD != SOCKET_NULL)
+ return [self connectedHostFromSocket6:socket6FD];
+
+ return nil;
+ }
+ else
+ {
+ __block NSString *result = nil;
+
+ dispatch_sync(socketQueue, ^{ @autoreleasepool {
+
+ if (socket4FD != SOCKET_NULL)
+ result = [self connectedHostFromSocket4:socket4FD];
+ else if (socket6FD != SOCKET_NULL)
+ result = [self connectedHostFromSocket6:socket6FD];
+ }});
+
+ return result;
+ }
+}
+
+- (uint16_t)connectedPort
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ if (socket4FD != SOCKET_NULL)
+ return [self connectedPortFromSocket4:socket4FD];
+ if (socket6FD != SOCKET_NULL)
+ return [self connectedPortFromSocket6:socket6FD];
+
+ return 0;
+ }
+ else
+ {
+ __block uint16_t result = 0;
+
+ dispatch_sync(socketQueue, ^{
+ // No need for autorelease pool
+
+ if (socket4FD != SOCKET_NULL)
+ result = [self connectedPortFromSocket4:socket4FD];
+ else if (socket6FD != SOCKET_NULL)
+ result = [self connectedPortFromSocket6:socket6FD];
+ });
+
+ return result;
+ }
+}
+
+- (NSURL *)connectedUrl
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ if (socketUN != SOCKET_NULL)
+ return [self connectedUrlFromSocketUN:socketUN];
+
+ return nil;
+ }
+ else
+ {
+ __block NSURL *result = nil;
+
+ dispatch_sync(socketQueue, ^{ @autoreleasepool {
+
+ if (socketUN != SOCKET_NULL)
+ result = [self connectedUrlFromSocketUN:socketUN];
+ }});
+
+ return result;
+ }
+}
+
+- (NSString *)localHost
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ if (socket4FD != SOCKET_NULL)
+ return [self localHostFromSocket4:socket4FD];
+ if (socket6FD != SOCKET_NULL)
+ return [self localHostFromSocket6:socket6FD];
+
+ return nil;
+ }
+ else
+ {
+ __block NSString *result = nil;
+
+ dispatch_sync(socketQueue, ^{ @autoreleasepool {
+
+ if (socket4FD != SOCKET_NULL)
+ result = [self localHostFromSocket4:socket4FD];
+ else if (socket6FD != SOCKET_NULL)
+ result = [self localHostFromSocket6:socket6FD];
+ }});
+
+ return result;
+ }
+}
+
+- (uint16_t)localPort
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ if (socket4FD != SOCKET_NULL)
+ return [self localPortFromSocket4:socket4FD];
+ if (socket6FD != SOCKET_NULL)
+ return [self localPortFromSocket6:socket6FD];
+
+ return 0;
+ }
+ else
+ {
+ __block uint16_t result = 0;
+
+ dispatch_sync(socketQueue, ^{
+ // No need for autorelease pool
+
+ if (socket4FD != SOCKET_NULL)
+ result = [self localPortFromSocket4:socket4FD];
+ else if (socket6FD != SOCKET_NULL)
+ result = [self localPortFromSocket6:socket6FD];
+ });
+
+ return result;
+ }
+}
+
+- (NSString *)connectedHost4
+{
+ if (socket4FD != SOCKET_NULL)
+ return [self connectedHostFromSocket4:socket4FD];
+
+ return nil;
+}
+
+- (NSString *)connectedHost6
+{
+ if (socket6FD != SOCKET_NULL)
+ return [self connectedHostFromSocket6:socket6FD];
+
+ return nil;
+}
+
+- (uint16_t)connectedPort4
+{
+ if (socket4FD != SOCKET_NULL)
+ return [self connectedPortFromSocket4:socket4FD];
+
+ return 0;
+}
+
+- (uint16_t)connectedPort6
+{
+ if (socket6FD != SOCKET_NULL)
+ return [self connectedPortFromSocket6:socket6FD];
+
+ return 0;
+}
+
+- (NSString *)localHost4
+{
+ if (socket4FD != SOCKET_NULL)
+ return [self localHostFromSocket4:socket4FD];
+
+ return nil;
+}
+
+- (NSString *)localHost6
+{
+ if (socket6FD != SOCKET_NULL)
+ return [self localHostFromSocket6:socket6FD];
+
+ return nil;
+}
+
+- (uint16_t)localPort4
+{
+ if (socket4FD != SOCKET_NULL)
+ return [self localPortFromSocket4:socket4FD];
+
+ return 0;
+}
+
+- (uint16_t)localPort6
+{
+ if (socket6FD != SOCKET_NULL)
+ return [self localPortFromSocket6:socket6FD];
+
+ return 0;
+}
+
+- (NSString *)connectedHostFromSocket4:(int)socketFD
+{
+ struct sockaddr_in sockaddr4;
+ socklen_t sockaddr4len = sizeof(sockaddr4);
+
+ if (getpeername(socketFD, (struct sockaddr *)&sockaddr4, &sockaddr4len) < 0)
+ {
+ return nil;
+ }
+ return [[self class] hostFromSockaddr4:&sockaddr4];
+}
+
+- (NSString *)connectedHostFromSocket6:(int)socketFD
+{
+ struct sockaddr_in6 sockaddr6;
+ socklen_t sockaddr6len = sizeof(sockaddr6);
+
+ if (getpeername(socketFD, (struct sockaddr *)&sockaddr6, &sockaddr6len) < 0)
+ {
+ return nil;
+ }
+ return [[self class] hostFromSockaddr6:&sockaddr6];
+}
+
+- (uint16_t)connectedPortFromSocket4:(int)socketFD
+{
+ struct sockaddr_in sockaddr4;
+ socklen_t sockaddr4len = sizeof(sockaddr4);
+
+ if (getpeername(socketFD, (struct sockaddr *)&sockaddr4, &sockaddr4len) < 0)
+ {
+ return 0;
+ }
+ return [[self class] portFromSockaddr4:&sockaddr4];
+}
+
+- (uint16_t)connectedPortFromSocket6:(int)socketFD
+{
+ struct sockaddr_in6 sockaddr6;
+ socklen_t sockaddr6len = sizeof(sockaddr6);
+
+ if (getpeername(socketFD, (struct sockaddr *)&sockaddr6, &sockaddr6len) < 0)
+ {
+ return 0;
+ }
+ return [[self class] portFromSockaddr6:&sockaddr6];
+}
+
+- (NSURL *)connectedUrlFromSocketUN:(int)socketFD
+{
+ struct sockaddr_un sockaddr;
+ socklen_t sockaddrlen = sizeof(sockaddr);
+
+ if (getpeername(socketFD, (struct sockaddr *)&sockaddr, &sockaddrlen) < 0)
+ {
+ return 0;
+ }
+ return [[self class] urlFromSockaddrUN:&sockaddr];
+}
+
+- (NSString *)localHostFromSocket4:(int)socketFD
+{
+ struct sockaddr_in sockaddr4;
+ socklen_t sockaddr4len = sizeof(sockaddr4);
+
+ if (getsockname(socketFD, (struct sockaddr *)&sockaddr4, &sockaddr4len) < 0)
+ {
+ return nil;
+ }
+ return [[self class] hostFromSockaddr4:&sockaddr4];
+}
+
+- (NSString *)localHostFromSocket6:(int)socketFD
+{
+ struct sockaddr_in6 sockaddr6;
+ socklen_t sockaddr6len = sizeof(sockaddr6);
+
+ if (getsockname(socketFD, (struct sockaddr *)&sockaddr6, &sockaddr6len) < 0)
+ {
+ return nil;
+ }
+ return [[self class] hostFromSockaddr6:&sockaddr6];
+}
+
+- (uint16_t)localPortFromSocket4:(int)socketFD
+{
+ struct sockaddr_in sockaddr4;
+ socklen_t sockaddr4len = sizeof(sockaddr4);
+
+ if (getsockname(socketFD, (struct sockaddr *)&sockaddr4, &sockaddr4len) < 0)
+ {
+ return 0;
+ }
+ return [[self class] portFromSockaddr4:&sockaddr4];
+}
+
+- (uint16_t)localPortFromSocket6:(int)socketFD
+{
+ struct sockaddr_in6 sockaddr6;
+ socklen_t sockaddr6len = sizeof(sockaddr6);
+
+ if (getsockname(socketFD, (struct sockaddr *)&sockaddr6, &sockaddr6len) < 0)
+ {
+ return 0;
+ }
+ return [[self class] portFromSockaddr6:&sockaddr6];
+}
+
+- (NSData *)connectedAddress
+{
+ __block NSData *result = nil;
+
+ dispatch_block_t block = ^{
+ if (socket4FD != SOCKET_NULL)
+ {
+ struct sockaddr_in sockaddr4;
+ socklen_t sockaddr4len = sizeof(sockaddr4);
+
+ if (getpeername(socket4FD, (struct sockaddr *)&sockaddr4, &sockaddr4len) == 0)
+ {
+ result = [[NSData alloc] initWithBytes:&sockaddr4 length:sockaddr4len];
+ }
+ }
+
+ if (socket6FD != SOCKET_NULL)
+ {
+ struct sockaddr_in6 sockaddr6;
+ socklen_t sockaddr6len = sizeof(sockaddr6);
+
+ if (getpeername(socket6FD, (struct sockaddr *)&sockaddr6, &sockaddr6len) == 0)
+ {
+ result = [[NSData alloc] initWithBytes:&sockaddr6 length:sockaddr6len];
+ }
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (NSData *)localAddress
+{
+ __block NSData *result = nil;
+
+ dispatch_block_t block = ^{
+ if (socket4FD != SOCKET_NULL)
+ {
+ struct sockaddr_in sockaddr4;
+ socklen_t sockaddr4len = sizeof(sockaddr4);
+
+ if (getsockname(socket4FD, (struct sockaddr *)&sockaddr4, &sockaddr4len) == 0)
+ {
+ result = [[NSData alloc] initWithBytes:&sockaddr4 length:sockaddr4len];
+ }
+ }
+
+ if (socket6FD != SOCKET_NULL)
+ {
+ struct sockaddr_in6 sockaddr6;
+ socklen_t sockaddr6len = sizeof(sockaddr6);
+
+ if (getsockname(socket6FD, (struct sockaddr *)&sockaddr6, &sockaddr6len) == 0)
+ {
+ result = [[NSData alloc] initWithBytes:&sockaddr6 length:sockaddr6len];
+ }
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (BOOL)isIPv4
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return (socket4FD != SOCKET_NULL);
+ }
+ else
+ {
+ __block BOOL result = NO;
+
+ dispatch_sync(socketQueue, ^{
+ result = (socket4FD != SOCKET_NULL);
+ });
+
+ return result;
+ }
+}
+
+- (BOOL)isIPv6
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return (socket6FD != SOCKET_NULL);
+ }
+ else
+ {
+ __block BOOL result = NO;
+
+ dispatch_sync(socketQueue, ^{
+ result = (socket6FD != SOCKET_NULL);
+ });
+
+ return result;
+ }
+}
+
+- (BOOL)isSecure
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return (flags & kSocketSecure) ? YES : NO;
+ }
+ else
+ {
+ __block BOOL result;
+
+ dispatch_sync(socketQueue, ^{
+ result = (flags & kSocketSecure) ? YES : NO;
+ });
+
+ return result;
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Utilities
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * Finds the address of an interface description.
+ * An inteface description may be an interface name (en0, en1, lo0) or corresponding IP (192.168.4.34).
+ *
+ * The interface description may optionally contain a port number at the end, separated by a colon.
+ * If a non-zero port parameter is provided, any port number in the interface description is ignored.
+ *
+ * The returned value is a 'struct sockaddr' wrapped in an NSMutableData object.
+**/
+- (void)getInterfaceAddress4:(NSMutableData **)interfaceAddr4Ptr
+ address6:(NSMutableData **)interfaceAddr6Ptr
+ fromDescription:(NSString *)interfaceDescription
+ port:(uint16_t)port
+{
+ NSMutableData *addr4 = nil;
+ NSMutableData *addr6 = nil;
+
+ NSString *interface = nil;
+
+ NSArray *components = [interfaceDescription componentsSeparatedByString:@":"];
+ if ([components count] > 0)
+ {
+ NSString *temp = [components objectAtIndex:0];
+ if ([temp length] > 0)
+ {
+ interface = temp;
+ }
+ }
+ if ([components count] > 1 && port == 0)
+ {
+ long portL = strtol([[components objectAtIndex:1] UTF8String], NULL, 10);
+
+ if (portL > 0 && portL <= UINT16_MAX)
+ {
+ port = (uint16_t)portL;
+ }
+ }
+
+ if (interface == nil)
+ {
+ // ANY address
+
+ struct sockaddr_in sockaddr4;
+ memset(&sockaddr4, 0, sizeof(sockaddr4));
+
+ sockaddr4.sin_len = sizeof(sockaddr4);
+ sockaddr4.sin_family = AF_INET;
+ sockaddr4.sin_port = htons(port);
+ sockaddr4.sin_addr.s_addr = htonl(INADDR_ANY);
+
+ struct sockaddr_in6 sockaddr6;
+ memset(&sockaddr6, 0, sizeof(sockaddr6));
+
+ sockaddr6.sin6_len = sizeof(sockaddr6);
+ sockaddr6.sin6_family = AF_INET6;
+ sockaddr6.sin6_port = htons(port);
+ sockaddr6.sin6_addr = in6addr_any;
+
+ addr4 = [NSMutableData dataWithBytes:&sockaddr4 length:sizeof(sockaddr4)];
+ addr6 = [NSMutableData dataWithBytes:&sockaddr6 length:sizeof(sockaddr6)];
+ }
+ else if ([interface isEqualToString:@"localhost"] || [interface isEqualToString:@"loopback"])
+ {
+ // LOOPBACK address
+
+ struct sockaddr_in sockaddr4;
+ memset(&sockaddr4, 0, sizeof(sockaddr4));
+
+ sockaddr4.sin_len = sizeof(sockaddr4);
+ sockaddr4.sin_family = AF_INET;
+ sockaddr4.sin_port = htons(port);
+ sockaddr4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+
+ struct sockaddr_in6 sockaddr6;
+ memset(&sockaddr6, 0, sizeof(sockaddr6));
+
+ sockaddr6.sin6_len = sizeof(sockaddr6);
+ sockaddr6.sin6_family = AF_INET6;
+ sockaddr6.sin6_port = htons(port);
+ sockaddr6.sin6_addr = in6addr_loopback;
+
+ addr4 = [NSMutableData dataWithBytes:&sockaddr4 length:sizeof(sockaddr4)];
+ addr6 = [NSMutableData dataWithBytes:&sockaddr6 length:sizeof(sockaddr6)];
+ }
+ else
+ {
+ const char *iface = [interface UTF8String];
+
+ struct ifaddrs *addrs;
+ const struct ifaddrs *cursor;
+
+ if ((getifaddrs(&addrs) == 0))
+ {
+ cursor = addrs;
+ while (cursor != NULL)
+ {
+ if ((addr4 == nil) && (cursor->ifa_addr->sa_family == AF_INET))
+ {
+ // IPv4
+
+ struct sockaddr_in nativeAddr4;
+ memcpy(&nativeAddr4, cursor->ifa_addr, sizeof(nativeAddr4));
+
+ if (strcmp(cursor->ifa_name, iface) == 0)
+ {
+ // Name match
+
+ nativeAddr4.sin_port = htons(port);
+
+ addr4 = [NSMutableData dataWithBytes:&nativeAddr4 length:sizeof(nativeAddr4)];
+ }
+ else
+ {
+ char ip[INET_ADDRSTRLEN];
+
+ const char *conversion = inet_ntop(AF_INET, &nativeAddr4.sin_addr, ip, sizeof(ip));
+
+ if ((conversion != NULL) && (strcmp(ip, iface) == 0))
+ {
+ // IP match
+
+ nativeAddr4.sin_port = htons(port);
+
+ addr4 = [NSMutableData dataWithBytes:&nativeAddr4 length:sizeof(nativeAddr4)];
+ }
+ }
+ }
+ else if ((addr6 == nil) && (cursor->ifa_addr->sa_family == AF_INET6))
+ {
+ // IPv6
+
+ struct sockaddr_in6 nativeAddr6;
+ memcpy(&nativeAddr6, cursor->ifa_addr, sizeof(nativeAddr6));
+
+ if (strcmp(cursor->ifa_name, iface) == 0)
+ {
+ // Name match
+
+ nativeAddr6.sin6_port = htons(port);
+
+ addr6 = [NSMutableData dataWithBytes:&nativeAddr6 length:sizeof(nativeAddr6)];
+ }
+ else
+ {
+ char ip[INET6_ADDRSTRLEN];
+
+ const char *conversion = inet_ntop(AF_INET6, &nativeAddr6.sin6_addr, ip, sizeof(ip));
+
+ if ((conversion != NULL) && (strcmp(ip, iface) == 0))
+ {
+ // IP match
+
+ nativeAddr6.sin6_port = htons(port);
+
+ addr6 = [NSMutableData dataWithBytes:&nativeAddr6 length:sizeof(nativeAddr6)];
+ }
+ }
+ }
+
+ cursor = cursor->ifa_next;
+ }
+
+ freeifaddrs(addrs);
+ }
+ }
+
+ if (interfaceAddr4Ptr) *interfaceAddr4Ptr = addr4;
+ if (interfaceAddr6Ptr) *interfaceAddr6Ptr = addr6;
+}
+
+- (NSData *)getInterfaceAddressFromUrl:(NSURL *)url;
+{
+ NSString *path = url.path;
+ if (path.length == 0) {
+ return nil;
+ }
+
+ struct sockaddr_un nativeAddr;
+ nativeAddr.sun_family = AF_UNIX;
+ strlcpy(nativeAddr.sun_path, path.fileSystemRepresentation, sizeof(nativeAddr.sun_path));
+ nativeAddr.sun_len = SUN_LEN(&nativeAddr);
+ NSData *interface = [NSData dataWithBytes:&nativeAddr length:sizeof(struct sockaddr_un)];
+
+ return interface;
+}
+
+- (void)setupReadAndWriteSourcesForNewlyConnectedSocket:(int)socketFD
+{
+ readSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, socketFD, 0, socketQueue);
+ writeSource = dispatch_source_create(DISPATCH_SOURCE_TYPE_WRITE, socketFD, 0, socketQueue);
+
+ // Setup event handlers
+
+ __weak GCDAsyncSocket *weakSelf = self;
+
+ dispatch_source_set_event_handler(readSource, ^{ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf == nil) return_from_block;
+
+ LogVerbose(@"readEventBlock");
+
+ strongSelf->socketFDBytesAvailable = dispatch_source_get_data(strongSelf->readSource);
+ LogVerbose(@"socketFDBytesAvailable: %lu", strongSelf->socketFDBytesAvailable);
+
+ if (strongSelf->socketFDBytesAvailable > 0)
+ [strongSelf doReadData];
+ else
+ [strongSelf doReadEOF];
+
+ #pragma clang diagnostic pop
+ }});
+
+ dispatch_source_set_event_handler(writeSource, ^{ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf == nil) return_from_block;
+
+ LogVerbose(@"writeEventBlock");
+
+ strongSelf->flags |= kSocketCanAcceptBytes;
+ [strongSelf doWriteData];
+
+ #pragma clang diagnostic pop
+ }});
+
+ // Setup cancel handlers
+
+ __block int socketFDRefCount = 2;
+
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_source_t theReadSource = readSource;
+ dispatch_source_t theWriteSource = writeSource;
+ #endif
+
+ dispatch_source_set_cancel_handler(readSource, ^{
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ LogVerbose(@"readCancelBlock");
+
+ #if !OS_OBJECT_USE_OBJC
+ LogVerbose(@"dispatch_release(readSource)");
+ dispatch_release(theReadSource);
+ #endif
+
+ if (--socketFDRefCount == 0)
+ {
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ }
+
+ #pragma clang diagnostic pop
+ });
+
+ dispatch_source_set_cancel_handler(writeSource, ^{
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ LogVerbose(@"writeCancelBlock");
+
+ #if !OS_OBJECT_USE_OBJC
+ LogVerbose(@"dispatch_release(writeSource)");
+ dispatch_release(theWriteSource);
+ #endif
+
+ if (--socketFDRefCount == 0)
+ {
+ LogVerbose(@"close(socketFD)");
+ close(socketFD);
+ }
+
+ #pragma clang diagnostic pop
+ });
+
+ // We will not be able to read until data arrives.
+ // But we should be able to write immediately.
+
+ socketFDBytesAvailable = 0;
+ flags &= ~kReadSourceSuspended;
+
+ LogVerbose(@"dispatch_resume(readSource)");
+ dispatch_resume(readSource);
+
+ flags |= kSocketCanAcceptBytes;
+ flags |= kWriteSourceSuspended;
+}
+
+- (BOOL)usingCFStreamForTLS
+{
+ #if TARGET_OS_IPHONE
+
+ if ((flags & kSocketSecure) && (flags & kUsingCFStreamForTLS))
+ {
+ // The startTLS method was given the GCDAsyncSocketUseCFStreamForTLS flag.
+
+ return YES;
+ }
+
+ #endif
+
+ return NO;
+}
+
+- (BOOL)usingSecureTransportForTLS
+{
+ // Invoking this method is equivalent to ![self usingCFStreamForTLS] (just more readable)
+
+ #if TARGET_OS_IPHONE
+
+ if ((flags & kSocketSecure) && (flags & kUsingCFStreamForTLS))
+ {
+ // The startTLS method was given the GCDAsyncSocketUseCFStreamForTLS flag.
+
+ return NO;
+ }
+
+ #endif
+
+ return YES;
+}
+
+- (void)suspendReadSource
+{
+ if (!(flags & kReadSourceSuspended))
+ {
+ LogVerbose(@"dispatch_suspend(readSource)");
+
+ dispatch_suspend(readSource);
+ flags |= kReadSourceSuspended;
+ }
+}
+
+- (void)resumeReadSource
+{
+ if (flags & kReadSourceSuspended)
+ {
+ LogVerbose(@"dispatch_resume(readSource)");
+
+ dispatch_resume(readSource);
+ flags &= ~kReadSourceSuspended;
+ }
+}
+
+- (void)suspendWriteSource
+{
+ if (!(flags & kWriteSourceSuspended))
+ {
+ LogVerbose(@"dispatch_suspend(writeSource)");
+
+ dispatch_suspend(writeSource);
+ flags |= kWriteSourceSuspended;
+ }
+}
+
+- (void)resumeWriteSource
+{
+ if (flags & kWriteSourceSuspended)
+ {
+ LogVerbose(@"dispatch_resume(writeSource)");
+
+ dispatch_resume(writeSource);
+ flags &= ~kWriteSourceSuspended;
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Reading
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (void)readDataWithTimeout:(NSTimeInterval)timeout tag:(long)tag
+{
+ [self readDataWithTimeout:timeout buffer:nil bufferOffset:0 maxLength:0 tag:tag];
+}
+
+- (void)readDataWithTimeout:(NSTimeInterval)timeout
+ buffer:(NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ tag:(long)tag
+{
+ [self readDataWithTimeout:timeout buffer:buffer bufferOffset:offset maxLength:0 tag:tag];
+}
+
+- (void)readDataWithTimeout:(NSTimeInterval)timeout
+ buffer:(NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ maxLength:(NSUInteger)length
+ tag:(long)tag
+{
+ if (offset > [buffer length]) {
+ LogWarn(@"Cannot read: offset > [buffer length]");
+ return;
+ }
+
+ GCDAsyncReadPacket *packet = [[GCDAsyncReadPacket alloc] initWithData:buffer
+ startOffset:offset
+ maxLength:length
+ timeout:timeout
+ readLength:0
+ terminator:nil
+ tag:tag];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ LogTrace();
+
+ if ((flags & kSocketStarted) && !(flags & kForbidReadsWrites))
+ {
+ [readQueue addObject:packet];
+ [self maybeDequeueRead];
+ }
+ }});
+
+ // Do not rely on the block being run in order to release the packet,
+ // as the queue might get released without the block completing.
+}
+
+- (void)readDataToLength:(NSUInteger)length withTimeout:(NSTimeInterval)timeout tag:(long)tag
+{
+ [self readDataToLength:length withTimeout:timeout buffer:nil bufferOffset:0 tag:tag];
+}
+
+- (void)readDataToLength:(NSUInteger)length
+ withTimeout:(NSTimeInterval)timeout
+ buffer:(NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ tag:(long)tag
+{
+ if (length == 0) {
+ LogWarn(@"Cannot read: length == 0");
+ return;
+ }
+ if (offset > [buffer length]) {
+ LogWarn(@"Cannot read: offset > [buffer length]");
+ return;
+ }
+
+ GCDAsyncReadPacket *packet = [[GCDAsyncReadPacket alloc] initWithData:buffer
+ startOffset:offset
+ maxLength:0
+ timeout:timeout
+ readLength:length
+ terminator:nil
+ tag:tag];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ LogTrace();
+
+ if ((flags & kSocketStarted) && !(flags & kForbidReadsWrites))
+ {
+ [readQueue addObject:packet];
+ [self maybeDequeueRead];
+ }
+ }});
+
+ // Do not rely on the block being run in order to release the packet,
+ // as the queue might get released without the block completing.
+}
+
+- (void)readDataToData:(NSData *)data withTimeout:(NSTimeInterval)timeout tag:(long)tag
+{
+ [self readDataToData:data withTimeout:timeout buffer:nil bufferOffset:0 maxLength:0 tag:tag];
+}
+
+- (void)readDataToData:(NSData *)data
+ withTimeout:(NSTimeInterval)timeout
+ buffer:(NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ tag:(long)tag
+{
+ [self readDataToData:data withTimeout:timeout buffer:buffer bufferOffset:offset maxLength:0 tag:tag];
+}
+
+- (void)readDataToData:(NSData *)data withTimeout:(NSTimeInterval)timeout maxLength:(NSUInteger)length tag:(long)tag
+{
+ [self readDataToData:data withTimeout:timeout buffer:nil bufferOffset:0 maxLength:length tag:tag];
+}
+
+- (void)readDataToData:(NSData *)data
+ withTimeout:(NSTimeInterval)timeout
+ buffer:(NSMutableData *)buffer
+ bufferOffset:(NSUInteger)offset
+ maxLength:(NSUInteger)maxLength
+ tag:(long)tag
+{
+ if ([data length] == 0) {
+ LogWarn(@"Cannot read: [data length] == 0");
+ return;
+ }
+ if (offset > [buffer length]) {
+ LogWarn(@"Cannot read: offset > [buffer length]");
+ return;
+ }
+ if (maxLength > 0 && maxLength < [data length]) {
+ LogWarn(@"Cannot read: maxLength > 0 && maxLength < [data length]");
+ return;
+ }
+
+ GCDAsyncReadPacket *packet = [[GCDAsyncReadPacket alloc] initWithData:buffer
+ startOffset:offset
+ maxLength:maxLength
+ timeout:timeout
+ readLength:0
+ terminator:data
+ tag:tag];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ LogTrace();
+
+ if ((flags & kSocketStarted) && !(flags & kForbidReadsWrites))
+ {
+ [readQueue addObject:packet];
+ [self maybeDequeueRead];
+ }
+ }});
+
+ // Do not rely on the block being run in order to release the packet,
+ // as the queue might get released without the block completing.
+}
+
+- (float)progressOfReadReturningTag:(long *)tagPtr bytesDone:(NSUInteger *)donePtr total:(NSUInteger *)totalPtr
+{
+ __block float result = 0.0F;
+
+ dispatch_block_t block = ^{
+
+ if (!currentRead || ![currentRead isKindOfClass:[GCDAsyncReadPacket class]])
+ {
+ // We're not reading anything right now.
+
+ if (tagPtr != NULL) *tagPtr = 0;
+ if (donePtr != NULL) *donePtr = 0;
+ if (totalPtr != NULL) *totalPtr = 0;
+
+ result = NAN;
+ }
+ else
+ {
+ // It's only possible to know the progress of our read if we're reading to a certain length.
+ // If we're reading to data, we of course have no idea when the data will arrive.
+ // If we're reading to timeout, then we have no idea when the next chunk of data will arrive.
+
+ NSUInteger done = currentRead->bytesDone;
+ NSUInteger total = currentRead->readLength;
+
+ if (tagPtr != NULL) *tagPtr = currentRead->tag;
+ if (donePtr != NULL) *donePtr = done;
+ if (totalPtr != NULL) *totalPtr = total;
+
+ if (total > 0)
+ result = (float)done / (float)total;
+ else
+ result = 1.0F;
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+/**
+ * This method starts a new read, if needed.
+ *
+ * It is called when:
+ * - a user requests a read
+ * - after a read request has finished (to handle the next request)
+ * - immediately after the socket opens to handle any pending requests
+ *
+ * This method also handles auto-disconnect post read/write completion.
+**/
+- (void)maybeDequeueRead
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ // If we're not currently processing a read AND we have an available read stream
+ if ((currentRead == nil) && (flags & kConnected))
+ {
+ if ([readQueue count] > 0)
+ {
+ // Dequeue the next object in the write queue
+ currentRead = [readQueue objectAtIndex:0];
+ [readQueue removeObjectAtIndex:0];
+
+
+ if ([currentRead isKindOfClass:[GCDAsyncSpecialPacket class]])
+ {
+ LogVerbose(@"Dequeued GCDAsyncSpecialPacket");
+
+ // Attempt to start TLS
+ flags |= kStartingReadTLS;
+
+ // This method won't do anything unless both kStartingReadTLS and kStartingWriteTLS are set
+ [self maybeStartTLS];
+ }
+ else
+ {
+ LogVerbose(@"Dequeued GCDAsyncReadPacket");
+
+ // Setup read timer (if needed)
+ [self setupReadTimerWithTimeout:currentRead->timeout];
+
+ // Immediately read, if possible
+ [self doReadData];
+ }
+ }
+ else if (flags & kDisconnectAfterReads)
+ {
+ if (flags & kDisconnectAfterWrites)
+ {
+ if (([writeQueue count] == 0) && (currentWrite == nil))
+ {
+ [self closeWithError:nil];
+ }
+ }
+ else
+ {
+ [self closeWithError:nil];
+ }
+ }
+ else if (flags & kSocketSecure)
+ {
+ [self flushSSLBuffers];
+
+ // Edge case:
+ //
+ // We just drained all data from the ssl buffers,
+ // and all known data from the socket (socketFDBytesAvailable).
+ //
+ // If we didn't get any data from this process,
+ // then we may have reached the end of the TCP stream.
+ //
+ // Be sure callbacks are enabled so we're notified about a disconnection.
+
+ if ([preBuffer availableBytes] == 0)
+ {
+ if ([self usingCFStreamForTLS]) {
+ // Callbacks never disabled
+ }
+ else {
+ [self resumeReadSource];
+ }
+ }
+ }
+ }
+}
+
+- (void)flushSSLBuffers
+{
+ LogTrace();
+
+ NSAssert((flags & kSocketSecure), @"Cannot flush ssl buffers on non-secure socket");
+
+ if ([preBuffer availableBytes] > 0)
+ {
+ // Only flush the ssl buffers if the prebuffer is empty.
+ // This is to avoid growing the prebuffer inifinitely large.
+
+ return;
+ }
+
+ #if TARGET_OS_IPHONE
+
+ if ([self usingCFStreamForTLS])
+ {
+ if ((flags & kSecureSocketHasBytesAvailable) && CFReadStreamHasBytesAvailable(readStream))
+ {
+ LogVerbose(@"%@ - Flushing ssl buffers into prebuffer...", THIS_METHOD);
+
+ CFIndex defaultBytesToRead = (1024 * 4);
+
+ [preBuffer ensureCapacityForWrite:defaultBytesToRead];
+
+ uint8_t *buffer = [preBuffer writeBuffer];
+
+ CFIndex result = CFReadStreamRead(readStream, buffer, defaultBytesToRead);
+ LogVerbose(@"%@ - CFReadStreamRead(): result = %i", THIS_METHOD, (int)result);
+
+ if (result > 0)
+ {
+ [preBuffer didWrite:result];
+ }
+
+ flags &= ~kSecureSocketHasBytesAvailable;
+ }
+
+ return;
+ }
+
+ #endif
+
+ __block NSUInteger estimatedBytesAvailable = 0;
+
+ dispatch_block_t updateEstimatedBytesAvailable = ^{
+
+ // Figure out if there is any data available to be read
+ //
+ // socketFDBytesAvailable <- Number of encrypted bytes we haven't read from the bsd socket
+ // [sslPreBuffer availableBytes] <- Number of encrypted bytes we've buffered from bsd socket
+ // sslInternalBufSize <- Number of decrypted bytes SecureTransport has buffered
+ //
+ // We call the variable "estimated" because we don't know how many decrypted bytes we'll get
+ // from the encrypted bytes in the sslPreBuffer.
+ // However, we do know this is an upper bound on the estimation.
+
+ estimatedBytesAvailable = socketFDBytesAvailable + [sslPreBuffer availableBytes];
+
+ size_t sslInternalBufSize = 0;
+ SSLGetBufferedReadSize(sslContext, &sslInternalBufSize);
+
+ estimatedBytesAvailable += sslInternalBufSize;
+ };
+
+ updateEstimatedBytesAvailable();
+
+ if (estimatedBytesAvailable > 0)
+ {
+ LogVerbose(@"%@ - Flushing ssl buffers into prebuffer...", THIS_METHOD);
+
+ BOOL done = NO;
+ do
+ {
+ LogVerbose(@"%@ - estimatedBytesAvailable = %lu", THIS_METHOD, (unsigned long)estimatedBytesAvailable);
+
+ // Make sure there's enough room in the prebuffer
+
+ [preBuffer ensureCapacityForWrite:estimatedBytesAvailable];
+
+ // Read data into prebuffer
+
+ uint8_t *buffer = [preBuffer writeBuffer];
+ size_t bytesRead = 0;
+
+ OSStatus result = SSLRead(sslContext, buffer, (size_t)estimatedBytesAvailable, &bytesRead);
+ LogVerbose(@"%@ - read from secure socket = %u", THIS_METHOD, (unsigned)bytesRead);
+
+ if (bytesRead > 0)
+ {
+ [preBuffer didWrite:bytesRead];
+ }
+
+ LogVerbose(@"%@ - prebuffer.length = %zu", THIS_METHOD, [preBuffer availableBytes]);
+
+ if (result != noErr)
+ {
+ done = YES;
+ }
+ else
+ {
+ updateEstimatedBytesAvailable();
+ }
+
+ } while (!done && estimatedBytesAvailable > 0);
+ }
+}
+
+- (void)doReadData
+{
+ LogTrace();
+
+ // This method is called on the socketQueue.
+ // It might be called directly, or via the readSource when data is available to be read.
+
+ if ((currentRead == nil) || (flags & kReadsPaused))
+ {
+ LogVerbose(@"No currentRead or kReadsPaused");
+
+ // Unable to read at this time
+
+ if (flags & kSocketSecure)
+ {
+ // Here's the situation:
+ //
+ // We have an established secure connection.
+ // There may not be a currentRead, but there might be encrypted data sitting around for us.
+ // When the user does get around to issuing a read, that encrypted data will need to be decrypted.
+ //
+ // So why make the user wait?
+ // We might as well get a head start on decrypting some data now.
+ //
+ // The other reason we do this has to do with detecting a socket disconnection.
+ // The SSL/TLS protocol has it's own disconnection handshake.
+ // So when a secure socket is closed, a "goodbye" packet comes across the wire.
+ // We want to make sure we read the "goodbye" packet so we can properly detect the TCP disconnection.
+
+ [self flushSSLBuffers];
+ }
+
+ if ([self usingCFStreamForTLS])
+ {
+ // CFReadStream only fires once when there is available data.
+ // It won't fire again until we've invoked CFReadStreamRead.
+ }
+ else
+ {
+ // If the readSource is firing, we need to pause it
+ // or else it will continue to fire over and over again.
+ //
+ // If the readSource is not firing,
+ // we want it to continue monitoring the socket.
+
+ if (socketFDBytesAvailable > 0)
+ {
+ [self suspendReadSource];
+ }
+ }
+ return;
+ }
+
+ BOOL hasBytesAvailable = NO;
+ unsigned long estimatedBytesAvailable = 0;
+
+ if ([self usingCFStreamForTLS])
+ {
+ #if TARGET_OS_IPHONE
+
+ // Requested CFStream, rather than SecureTransport, for TLS (via GCDAsyncSocketUseCFStreamForTLS)
+
+ estimatedBytesAvailable = 0;
+ if ((flags & kSecureSocketHasBytesAvailable) && CFReadStreamHasBytesAvailable(readStream))
+ hasBytesAvailable = YES;
+ else
+ hasBytesAvailable = NO;
+
+ #endif
+ }
+ else
+ {
+ estimatedBytesAvailable = socketFDBytesAvailable;
+
+ if (flags & kSocketSecure)
+ {
+ // There are 2 buffers to be aware of here.
+ //
+ // We are using SecureTransport, a TLS/SSL security layer which sits atop TCP.
+ // We issue a read to the SecureTranport API, which in turn issues a read to our SSLReadFunction.
+ // Our SSLReadFunction then reads from the BSD socket and returns the encrypted data to SecureTransport.
+ // SecureTransport then decrypts the data, and finally returns the decrypted data back to us.
+ //
+ // The first buffer is one we create.
+ // SecureTransport often requests small amounts of data.
+ // This has to do with the encypted packets that are coming across the TCP stream.
+ // But it's non-optimal to do a bunch of small reads from the BSD socket.
+ // So our SSLReadFunction reads all available data from the socket (optimizing the sys call)
+ // and may store excess in the sslPreBuffer.
+
+ estimatedBytesAvailable += [sslPreBuffer availableBytes];
+
+ // The second buffer is within SecureTransport.
+ // As mentioned earlier, there are encrypted packets coming across the TCP stream.
+ // SecureTransport needs the entire packet to decrypt it.
+ // But if the entire packet produces X bytes of decrypted data,
+ // and we only asked SecureTransport for X/2 bytes of data,
+ // it must store the extra X/2 bytes of decrypted data for the next read.
+ //
+ // The SSLGetBufferedReadSize function will tell us the size of this internal buffer.
+ // From the documentation:
+ //
+ // "This function does not block or cause any low-level read operations to occur."
+
+ size_t sslInternalBufSize = 0;
+ SSLGetBufferedReadSize(sslContext, &sslInternalBufSize);
+
+ estimatedBytesAvailable += sslInternalBufSize;
+ }
+
+ hasBytesAvailable = (estimatedBytesAvailable > 0);
+ }
+
+ if ((hasBytesAvailable == NO) && ([preBuffer availableBytes] == 0))
+ {
+ LogVerbose(@"No data available to read...");
+
+ // No data available to read.
+
+ if (![self usingCFStreamForTLS])
+ {
+ // Need to wait for readSource to fire and notify us of
+ // available data in the socket's internal read buffer.
+
+ [self resumeReadSource];
+ }
+ return;
+ }
+
+ if (flags & kStartingReadTLS)
+ {
+ LogVerbose(@"Waiting for SSL/TLS handshake to complete");
+
+ // The readQueue is waiting for SSL/TLS handshake to complete.
+
+ if (flags & kStartingWriteTLS)
+ {
+ if ([self usingSecureTransportForTLS] && lastSSLHandshakeError == errSSLWouldBlock)
+ {
+ // We are in the process of a SSL Handshake.
+ // We were waiting for incoming data which has just arrived.
+
+ [self ssl_continueSSLHandshake];
+ }
+ }
+ else
+ {
+ // We are still waiting for the writeQueue to drain and start the SSL/TLS process.
+ // We now know data is available to read.
+
+ if (![self usingCFStreamForTLS])
+ {
+ // Suspend the read source or else it will continue to fire nonstop.
+
+ [self suspendReadSource];
+ }
+ }
+
+ return;
+ }
+
+ BOOL done = NO; // Completed read operation
+ NSError *error = nil; // Error occurred
+
+ NSUInteger totalBytesReadForCurrentRead = 0;
+
+ //
+ // STEP 1 - READ FROM PREBUFFER
+ //
+
+ if ([preBuffer availableBytes] > 0)
+ {
+ // There are 3 types of read packets:
+ //
+ // 1) Read all available data.
+ // 2) Read a specific length of data.
+ // 3) Read up to a particular terminator.
+
+ NSUInteger bytesToCopy;
+
+ if (currentRead->term != nil)
+ {
+ // Read type #3 - read up to a terminator
+
+ bytesToCopy = [currentRead readLengthForTermWithPreBuffer:preBuffer found:&done];
+ }
+ else
+ {
+ // Read type #1 or #2
+
+ bytesToCopy = [currentRead readLengthForNonTermWithHint:[preBuffer availableBytes]];
+ }
+
+ // Make sure we have enough room in the buffer for our read.
+
+ [currentRead ensureCapacityForAdditionalDataOfLength:bytesToCopy];
+
+ // Copy bytes from prebuffer into packet buffer
+
+ uint8_t *buffer = (uint8_t *)[currentRead->buffer mutableBytes] + currentRead->startOffset +
+ currentRead->bytesDone;
+
+ memcpy(buffer, [preBuffer readBuffer], bytesToCopy);
+
+ // Remove the copied bytes from the preBuffer
+ [preBuffer didRead:bytesToCopy];
+
+ LogVerbose(@"copied(%lu) preBufferLength(%zu)", (unsigned long)bytesToCopy, [preBuffer availableBytes]);
+
+ // Update totals
+
+ currentRead->bytesDone += bytesToCopy;
+ totalBytesReadForCurrentRead += bytesToCopy;
+
+ // Check to see if the read operation is done
+
+ if (currentRead->readLength > 0)
+ {
+ // Read type #2 - read a specific length of data
+
+ done = (currentRead->bytesDone == currentRead->readLength);
+ }
+ else if (currentRead->term != nil)
+ {
+ // Read type #3 - read up to a terminator
+
+ // Our 'done' variable was updated via the readLengthForTermWithPreBuffer:found: method
+
+ if (!done && currentRead->maxLength > 0)
+ {
+ // We're not done and there's a set maxLength.
+ // Have we reached that maxLength yet?
+
+ if (currentRead->bytesDone >= currentRead->maxLength)
+ {
+ error = [self readMaxedOutError];
+ }
+ }
+ }
+ else
+ {
+ // Read type #1 - read all available data
+ //
+ // We're done as soon as
+ // - we've read all available data (in prebuffer and socket)
+ // - we've read the maxLength of read packet.
+
+ done = ((currentRead->maxLength > 0) && (currentRead->bytesDone == currentRead->maxLength));
+ }
+
+ }
+
+ //
+ // STEP 2 - READ FROM SOCKET
+ //
+
+ BOOL socketEOF = (flags & kSocketHasReadEOF) ? YES : NO; // Nothing more to read via socket (end of file)
+ BOOL waiting = !done && !error && !socketEOF && !hasBytesAvailable; // Ran out of data, waiting for more
+
+ if (!done && !error && !socketEOF && hasBytesAvailable)
+ {
+ NSAssert(([preBuffer availableBytes] == 0), @"Invalid logic");
+
+ BOOL readIntoPreBuffer = NO;
+ uint8_t *buffer = NULL;
+ size_t bytesRead = 0;
+
+ if (flags & kSocketSecure)
+ {
+ if ([self usingCFStreamForTLS])
+ {
+ #if TARGET_OS_IPHONE
+
+ // Using CFStream, rather than SecureTransport, for TLS
+
+ NSUInteger defaultReadLength = (1024 * 32);
+
+ NSUInteger bytesToRead = [currentRead optimalReadLengthWithDefault:defaultReadLength
+ shouldPreBuffer:&readIntoPreBuffer];
+
+ // Make sure we have enough room in the buffer for our read.
+ //
+ // We are either reading directly into the currentRead->buffer,
+ // or we're reading into the temporary preBuffer.
+
+ if (readIntoPreBuffer)
+ {
+ [preBuffer ensureCapacityForWrite:bytesToRead];
+
+ buffer = [preBuffer writeBuffer];
+ }
+ else
+ {
+ [currentRead ensureCapacityForAdditionalDataOfLength:bytesToRead];
+
+ buffer = (uint8_t *)[currentRead->buffer mutableBytes]
+ + currentRead->startOffset
+ + currentRead->bytesDone;
+ }
+
+ // Read data into buffer
+
+ CFIndex result = CFReadStreamRead(readStream, buffer, (CFIndex)bytesToRead);
+ LogVerbose(@"CFReadStreamRead(): result = %i", (int)result);
+
+ if (result < 0)
+ {
+ error = (__bridge_transfer NSError *)CFReadStreamCopyError(readStream);
+ }
+ else if (result == 0)
+ {
+ socketEOF = YES;
+ }
+ else
+ {
+ waiting = YES;
+ bytesRead = (size_t)result;
+ }
+
+ // We only know how many decrypted bytes were read.
+ // The actual number of bytes read was likely more due to the overhead of the encryption.
+ // So we reset our flag, and rely on the next callback to alert us of more data.
+ flags &= ~kSecureSocketHasBytesAvailable;
+
+ #endif
+ }
+ else
+ {
+ // Using SecureTransport for TLS
+ //
+ // We know:
+ // - how many bytes are available on the socket
+ // - how many encrypted bytes are sitting in the sslPreBuffer
+ // - how many decypted bytes are sitting in the sslContext
+ //
+ // But we do NOT know:
+ // - how many encypted bytes are sitting in the sslContext
+ //
+ // So we play the regular game of using an upper bound instead.
+
+ NSUInteger defaultReadLength = (1024 * 32);
+
+ if (defaultReadLength < estimatedBytesAvailable) {
+ defaultReadLength = estimatedBytesAvailable + (1024 * 16);
+ }
+
+ NSUInteger bytesToRead = [currentRead optimalReadLengthWithDefault:defaultReadLength
+ shouldPreBuffer:&readIntoPreBuffer];
+
+ if (bytesToRead > SIZE_MAX) { // NSUInteger may be bigger than size_t
+ bytesToRead = SIZE_MAX;
+ }
+
+ // Make sure we have enough room in the buffer for our read.
+ //
+ // We are either reading directly into the currentRead->buffer,
+ // or we're reading into the temporary preBuffer.
+
+ if (readIntoPreBuffer)
+ {
+ [preBuffer ensureCapacityForWrite:bytesToRead];
+
+ buffer = [preBuffer writeBuffer];
+ }
+ else
+ {
+ [currentRead ensureCapacityForAdditionalDataOfLength:bytesToRead];
+
+ buffer = (uint8_t *)[currentRead->buffer mutableBytes]
+ + currentRead->startOffset
+ + currentRead->bytesDone;
+ }
+
+ // The documentation from Apple states:
+ //
+ // "a read operation might return errSSLWouldBlock,
+ // indicating that less data than requested was actually transferred"
+ //
+ // However, starting around 10.7, the function will sometimes return noErr,
+ // even if it didn't read as much data as requested. So we need to watch out for that.
+
+ OSStatus result;
+ do
+ {
+ void *loop_buffer = buffer + bytesRead;
+ size_t loop_bytesToRead = (size_t)bytesToRead - bytesRead;
+ size_t loop_bytesRead = 0;
+
+ result = SSLRead(sslContext, loop_buffer, loop_bytesToRead, &loop_bytesRead);
+ LogVerbose(@"read from secure socket = %u", (unsigned)loop_bytesRead);
+
+ bytesRead += loop_bytesRead;
+
+ } while ((result == noErr) && (bytesRead < bytesToRead));
+
+
+ if (result != noErr)
+ {
+ if (result == errSSLWouldBlock)
+ waiting = YES;
+ else
+ {
+ if (result == errSSLClosedGraceful || result == errSSLClosedAbort)
+ {
+ // We've reached the end of the stream.
+ // Handle this the same way we would an EOF from the socket.
+ socketEOF = YES;
+ sslErrCode = result;
+ }
+ else
+ {
+ error = [self sslError:result];
+ }
+ }
+ // It's possible that bytesRead > 0, even if the result was errSSLWouldBlock.
+ // This happens when the SSLRead function is able to read some data,
+ // but not the entire amount we requested.
+
+ if (bytesRead <= 0)
+ {
+ bytesRead = 0;
+ }
+ }
+
+ // Do not modify socketFDBytesAvailable.
+ // It will be updated via the SSLReadFunction().
+ }
+ }
+ else
+ {
+ // Normal socket operation
+
+ NSUInteger bytesToRead;
+
+ // There are 3 types of read packets:
+ //
+ // 1) Read all available data.
+ // 2) Read a specific length of data.
+ // 3) Read up to a particular terminator.
+
+ if (currentRead->term != nil)
+ {
+ // Read type #3 - read up to a terminator
+
+ bytesToRead = [currentRead readLengthForTermWithHint:estimatedBytesAvailable
+ shouldPreBuffer:&readIntoPreBuffer];
+ }
+ else
+ {
+ // Read type #1 or #2
+
+ bytesToRead = [currentRead readLengthForNonTermWithHint:estimatedBytesAvailable];
+ }
+
+ if (bytesToRead > SIZE_MAX) { // NSUInteger may be bigger than size_t (read param 3)
+ bytesToRead = SIZE_MAX;
+ }
+
+ // Make sure we have enough room in the buffer for our read.
+ //
+ // We are either reading directly into the currentRead->buffer,
+ // or we're reading into the temporary preBuffer.
+
+ if (readIntoPreBuffer)
+ {
+ [preBuffer ensureCapacityForWrite:bytesToRead];
+
+ buffer = [preBuffer writeBuffer];
+ }
+ else
+ {
+ [currentRead ensureCapacityForAdditionalDataOfLength:bytesToRead];
+
+ buffer = (uint8_t *)[currentRead->buffer mutableBytes]
+ + currentRead->startOffset
+ + currentRead->bytesDone;
+ }
+
+ // Read data into buffer
+
+ int socketFD = (socket4FD != SOCKET_NULL) ? socket4FD : (socket6FD != SOCKET_NULL) ? socket6FD : socketUN;
+
+ ssize_t result = read(socketFD, buffer, (size_t)bytesToRead);
+ LogVerbose(@"read from socket = %i", (int)result);
+
+ if (result < 0)
+ {
+ if (errno == EWOULDBLOCK)
+ waiting = YES;
+ else
+ error = [self errnoErrorWithReason:@"Error in read() function"];
+
+ socketFDBytesAvailable = 0;
+ }
+ else if (result == 0)
+ {
+ socketEOF = YES;
+ socketFDBytesAvailable = 0;
+ }
+ else
+ {
+ bytesRead = result;
+
+ if (bytesRead < bytesToRead)
+ {
+ // The read returned less data than requested.
+ // This means socketFDBytesAvailable was a bit off due to timing,
+ // because we read from the socket right when the readSource event was firing.
+ socketFDBytesAvailable = 0;
+ }
+ else
+ {
+ if (socketFDBytesAvailable <= bytesRead)
+ socketFDBytesAvailable = 0;
+ else
+ socketFDBytesAvailable -= bytesRead;
+ }
+
+ if (socketFDBytesAvailable == 0)
+ {
+ waiting = YES;
+ }
+ }
+ }
+
+ if (bytesRead > 0)
+ {
+ // Check to see if the read operation is done
+
+ if (currentRead->readLength > 0)
+ {
+ // Read type #2 - read a specific length of data
+ //
+ // Note: We should never be using a prebuffer when we're reading a specific length of data.
+
+ NSAssert(readIntoPreBuffer == NO, @"Invalid logic");
+
+ currentRead->bytesDone += bytesRead;
+ totalBytesReadForCurrentRead += bytesRead;
+
+ done = (currentRead->bytesDone == currentRead->readLength);
+ }
+ else if (currentRead->term != nil)
+ {
+ // Read type #3 - read up to a terminator
+
+ if (readIntoPreBuffer)
+ {
+ // We just read a big chunk of data into the preBuffer
+
+ [preBuffer didWrite:bytesRead];
+ LogVerbose(@"read data into preBuffer - preBuffer.length = %zu", [preBuffer availableBytes]);
+
+ // Search for the terminating sequence
+
+ NSUInteger bytesToCopy = [currentRead readLengthForTermWithPreBuffer:preBuffer found:&done];
+ LogVerbose(@"copying %lu bytes from preBuffer", (unsigned long)bytesToCopy);
+
+ // Ensure there's room on the read packet's buffer
+
+ [currentRead ensureCapacityForAdditionalDataOfLength:bytesToCopy];
+
+ // Copy bytes from prebuffer into read buffer
+
+ uint8_t *readBuf = (uint8_t *)[currentRead->buffer mutableBytes] + currentRead->startOffset
+ + currentRead->bytesDone;
+
+ memcpy(readBuf, [preBuffer readBuffer], bytesToCopy);
+
+ // Remove the copied bytes from the prebuffer
+ [preBuffer didRead:bytesToCopy];
+ LogVerbose(@"preBuffer.length = %zu", [preBuffer availableBytes]);
+
+ // Update totals
+ currentRead->bytesDone += bytesToCopy;
+ totalBytesReadForCurrentRead += bytesToCopy;
+
+ // Our 'done' variable was updated via the readLengthForTermWithPreBuffer:found: method above
+ }
+ else
+ {
+ // We just read a big chunk of data directly into the packet's buffer.
+ // We need to move any overflow into the prebuffer.
+
+ NSInteger overflow = [currentRead searchForTermAfterPreBuffering:bytesRead];
+
+ if (overflow == 0)
+ {
+ // Perfect match!
+ // Every byte we read stays in the read buffer,
+ // and the last byte we read was the last byte of the term.
+
+ currentRead->bytesDone += bytesRead;
+ totalBytesReadForCurrentRead += bytesRead;
+ done = YES;
+ }
+ else if (overflow > 0)
+ {
+ // The term was found within the data that we read,
+ // and there are extra bytes that extend past the end of the term.
+ // We need to move these excess bytes out of the read packet and into the prebuffer.
+
+ NSInteger underflow = bytesRead - overflow;
+
+ // Copy excess data into preBuffer
+
+ LogVerbose(@"copying %ld overflow bytes into preBuffer", (long)overflow);
+ [preBuffer ensureCapacityForWrite:overflow];
+
+ uint8_t *overflowBuffer = buffer + underflow;
+ memcpy([preBuffer writeBuffer], overflowBuffer, overflow);
+
+ [preBuffer didWrite:overflow];
+ LogVerbose(@"preBuffer.length = %zu", [preBuffer availableBytes]);
+
+ // Note: The completeCurrentRead method will trim the buffer for us.
+
+ currentRead->bytesDone += underflow;
+ totalBytesReadForCurrentRead += underflow;
+ done = YES;
+ }
+ else
+ {
+ // The term was not found within the data that we read.
+
+ currentRead->bytesDone += bytesRead;
+ totalBytesReadForCurrentRead += bytesRead;
+ done = NO;
+ }
+ }
+
+ if (!done && currentRead->maxLength > 0)
+ {
+ // We're not done and there's a set maxLength.
+ // Have we reached that maxLength yet?
+
+ if (currentRead->bytesDone >= currentRead->maxLength)
+ {
+ error = [self readMaxedOutError];
+ }
+ }
+ }
+ else
+ {
+ // Read type #1 - read all available data
+
+ if (readIntoPreBuffer)
+ {
+ // We just read a chunk of data into the preBuffer
+
+ [preBuffer didWrite:bytesRead];
+
+ // Now copy the data into the read packet.
+ //
+ // Recall that we didn't read directly into the packet's buffer to avoid
+ // over-allocating memory since we had no clue how much data was available to be read.
+ //
+ // Ensure there's room on the read packet's buffer
+
+ [currentRead ensureCapacityForAdditionalDataOfLength:bytesRead];
+
+ // Copy bytes from prebuffer into read buffer
+
+ uint8_t *readBuf = (uint8_t *)[currentRead->buffer mutableBytes] + currentRead->startOffset
+ + currentRead->bytesDone;
+
+ memcpy(readBuf, [preBuffer readBuffer], bytesRead);
+
+ // Remove the copied bytes from the prebuffer
+ [preBuffer didRead:bytesRead];
+
+ // Update totals
+ currentRead->bytesDone += bytesRead;
+ totalBytesReadForCurrentRead += bytesRead;
+ }
+ else
+ {
+ currentRead->bytesDone += bytesRead;
+ totalBytesReadForCurrentRead += bytesRead;
+ }
+
+ done = YES;
+ }
+
+ } // if (bytesRead > 0)
+
+ } // if (!done && !error && !socketEOF && hasBytesAvailable)
+
+
+ if (!done && currentRead->readLength == 0 && currentRead->term == nil)
+ {
+ // Read type #1 - read all available data
+ //
+ // We might arrive here if we read data from the prebuffer but not from the socket.
+
+ done = (totalBytesReadForCurrentRead > 0);
+ }
+
+ // Check to see if we're done, or if we've made progress
+
+ if (done)
+ {
+ [self completeCurrentRead];
+
+ if (!error && (!socketEOF || [preBuffer availableBytes] > 0))
+ {
+ [self maybeDequeueRead];
+ }
+ }
+ else if (totalBytesReadForCurrentRead > 0)
+ {
+ // We're not done read type #2 or #3 yet, but we have read in some bytes
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socket:didReadPartialDataOfLength:tag:)])
+ {
+ long theReadTag = currentRead->tag;
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socket:self didReadPartialDataOfLength:totalBytesReadForCurrentRead tag:theReadTag];
+ }});
+ }
+ }
+
+ // Check for errors
+
+ if (error)
+ {
+ [self closeWithError:error];
+ }
+ else if (socketEOF)
+ {
+ [self doReadEOF];
+ }
+ else if (waiting)
+ {
+ if (![self usingCFStreamForTLS])
+ {
+ // Monitor the socket for readability (if we're not already doing so)
+ [self resumeReadSource];
+ }
+ }
+
+ // Do not add any code here without first adding return statements in the error cases above.
+}
+
+- (void)doReadEOF
+{
+ LogTrace();
+
+ // This method may be called more than once.
+ // If the EOF is read while there is still data in the preBuffer,
+ // then this method may be called continually after invocations of doReadData to see if it's time to disconnect.
+
+ flags |= kSocketHasReadEOF;
+
+ if (flags & kSocketSecure)
+ {
+ // If the SSL layer has any buffered data, flush it into the preBuffer now.
+
+ [self flushSSLBuffers];
+ }
+
+ BOOL shouldDisconnect = NO;
+ NSError *error = nil;
+
+ if ((flags & kStartingReadTLS) || (flags & kStartingWriteTLS))
+ {
+ // We received an EOF during or prior to startTLS.
+ // The SSL/TLS handshake is now impossible, so this is an unrecoverable situation.
+
+ shouldDisconnect = YES;
+
+ if ([self usingSecureTransportForTLS])
+ {
+ error = [self sslError:errSSLClosedAbort];
+ }
+ }
+ else if (flags & kReadStreamClosed)
+ {
+ // The preBuffer has already been drained.
+ // The config allows half-duplex connections.
+ // We've previously checked the socket, and it appeared writeable.
+ // So we marked the read stream as closed and notified the delegate.
+ //
+ // As per the half-duplex contract, the socket will be closed when a write fails,
+ // or when the socket is manually closed.
+
+ shouldDisconnect = NO;
+ }
+ else if ([preBuffer availableBytes] > 0)
+ {
+ LogVerbose(@"Socket reached EOF, but there is still data available in prebuffer");
+
+ // Although we won't be able to read any more data from the socket,
+ // there is existing data that has been prebuffered that we can read.
+
+ shouldDisconnect = NO;
+ }
+ else if (config & kAllowHalfDuplexConnection)
+ {
+ // We just received an EOF (end of file) from the socket's read stream.
+ // This means the remote end of the socket (the peer we're connected to)
+ // has explicitly stated that it will not be sending us any more data.
+ //
+ // Query the socket to see if it is still writeable. (Perhaps the peer will continue reading data from us)
+
+ int socketFD = (socket4FD != SOCKET_NULL) ? socket4FD : (socket6FD != SOCKET_NULL) ? socket6FD : socketUN;
+
+ struct pollfd pfd[1];
+ pfd[0].fd = socketFD;
+ pfd[0].events = POLLOUT;
+ pfd[0].revents = 0;
+
+ poll(pfd, 1, 0);
+
+ if (pfd[0].revents & POLLOUT)
+ {
+ // Socket appears to still be writeable
+
+ shouldDisconnect = NO;
+ flags |= kReadStreamClosed;
+
+ // Notify the delegate that we're going half-duplex
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socketDidCloseReadStream:)])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socketDidCloseReadStream:self];
+ }});
+ }
+ }
+ else
+ {
+ shouldDisconnect = YES;
+ }
+ }
+ else
+ {
+ shouldDisconnect = YES;
+ }
+
+
+ if (shouldDisconnect)
+ {
+ if (error == nil)
+ {
+ if ([self usingSecureTransportForTLS])
+ {
+ if (sslErrCode != noErr && sslErrCode != errSSLClosedGraceful)
+ {
+ error = [self sslError:sslErrCode];
+ }
+ else
+ {
+ error = [self connectionClosedError];
+ }
+ }
+ else
+ {
+ error = [self connectionClosedError];
+ }
+ }
+ [self closeWithError:error];
+ }
+ else
+ {
+ if (![self usingCFStreamForTLS])
+ {
+ // Suspend the read source (if needed)
+
+ [self suspendReadSource];
+ }
+ }
+}
+
+- (void)completeCurrentRead
+{
+ LogTrace();
+
+ NSAssert(currentRead, @"Trying to complete current read when there is no current read.");
+
+
+ NSData *result = nil;
+
+ if (currentRead->bufferOwner)
+ {
+ // We created the buffer on behalf of the user.
+ // Trim our buffer to be the proper size.
+ [currentRead->buffer setLength:currentRead->bytesDone];
+
+ result = currentRead->buffer;
+ }
+ else
+ {
+ // We did NOT create the buffer.
+ // The buffer is owned by the caller.
+ // Only trim the buffer if we had to increase its size.
+
+ if ([currentRead->buffer length] > currentRead->originalBufferLength)
+ {
+ NSUInteger readSize = currentRead->startOffset + currentRead->bytesDone;
+ NSUInteger origSize = currentRead->originalBufferLength;
+
+ NSUInteger buffSize = MAX(readSize, origSize);
+
+ [currentRead->buffer setLength:buffSize];
+ }
+
+ uint8_t *buffer = (uint8_t *)[currentRead->buffer mutableBytes] + currentRead->startOffset;
+
+ result = [NSData dataWithBytesNoCopy:buffer length:currentRead->bytesDone freeWhenDone:NO];
+ }
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socket:didReadData:withTag:)])
+ {
+ GCDAsyncReadPacket *theRead = currentRead; // Ensure currentRead retained since result may not own buffer
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socket:self didReadData:result withTag:theRead->tag];
+ }});
+ }
+
+ [self endCurrentRead];
+}
+
+- (void)endCurrentRead
+{
+ if (readTimer)
+ {
+ dispatch_source_cancel(readTimer);
+ readTimer = NULL;
+ }
+
+ currentRead = nil;
+}
+
+- (void)setupReadTimerWithTimeout:(NSTimeInterval)timeout
+{
+ if (timeout >= 0.0)
+ {
+ readTimer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, socketQueue);
+
+ __weak GCDAsyncSocket *weakSelf = self;
+
+ dispatch_source_set_event_handler(readTimer, ^{ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf == nil) return_from_block;
+
+ [strongSelf doReadTimeout];
+
+ #pragma clang diagnostic pop
+ }});
+
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_source_t theReadTimer = readTimer;
+ dispatch_source_set_cancel_handler(readTimer, ^{
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ LogVerbose(@"dispatch_release(readTimer)");
+ dispatch_release(theReadTimer);
+
+ #pragma clang diagnostic pop
+ });
+ #endif
+
+ dispatch_time_t tt = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(timeout * NSEC_PER_SEC));
+
+ dispatch_source_set_timer(readTimer, tt, DISPATCH_TIME_FOREVER, 0);
+ dispatch_resume(readTimer);
+ }
+}
+
+- (void)doReadTimeout
+{
+ // This is a little bit tricky.
+ // Ideally we'd like to synchronously query the delegate about a timeout extension.
+ // But if we do so synchronously we risk a possible deadlock.
+ // So instead we have to do so asynchronously, and callback to ourselves from within the delegate block.
+
+ flags |= kReadsPaused;
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socket:shouldTimeoutReadWithTag:elapsed:bytesDone:)])
+ {
+ GCDAsyncReadPacket *theRead = currentRead;
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ NSTimeInterval timeoutExtension = 0.0;
+
+ timeoutExtension = [theDelegate socket:self shouldTimeoutReadWithTag:theRead->tag
+ elapsed:theRead->timeout
+ bytesDone:theRead->bytesDone];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ [self doReadTimeoutWithExtension:timeoutExtension];
+ }});
+ }});
+ }
+ else
+ {
+ [self doReadTimeoutWithExtension:0.0];
+ }
+}
+
+- (void)doReadTimeoutWithExtension:(NSTimeInterval)timeoutExtension
+{
+ if (currentRead)
+ {
+ if (timeoutExtension > 0.0)
+ {
+ currentRead->timeout += timeoutExtension;
+
+ // Reschedule the timer
+ dispatch_time_t tt = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(timeoutExtension * NSEC_PER_SEC));
+ dispatch_source_set_timer(readTimer, tt, DISPATCH_TIME_FOREVER, 0);
+
+ // Unpause reads, and continue
+ flags &= ~kReadsPaused;
+ [self doReadData];
+ }
+ else
+ {
+ LogVerbose(@"ReadTimeout");
+
+ [self closeWithError:[self readTimeoutError]];
+ }
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Writing
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (void)writeData:(NSData *)data withTimeout:(NSTimeInterval)timeout tag:(long)tag
+{
+ if ([data length] == 0) return;
+
+ GCDAsyncWritePacket *packet = [[GCDAsyncWritePacket alloc] initWithData:data timeout:timeout tag:tag];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ LogTrace();
+
+ if ((flags & kSocketStarted) && !(flags & kForbidReadsWrites))
+ {
+ [writeQueue addObject:packet];
+ [self maybeDequeueWrite];
+ }
+ }});
+
+ // Do not rely on the block being run in order to release the packet,
+ // as the queue might get released without the block completing.
+}
+
+- (float)progressOfWriteReturningTag:(long *)tagPtr bytesDone:(NSUInteger *)donePtr total:(NSUInteger *)totalPtr
+{
+ __block float result = 0.0F;
+
+ dispatch_block_t block = ^{
+
+ if (!currentWrite || ![currentWrite isKindOfClass:[GCDAsyncWritePacket class]])
+ {
+ // We're not writing anything right now.
+
+ if (tagPtr != NULL) *tagPtr = 0;
+ if (donePtr != NULL) *donePtr = 0;
+ if (totalPtr != NULL) *totalPtr = 0;
+
+ result = NAN;
+ }
+ else
+ {
+ NSUInteger done = currentWrite->bytesDone;
+ NSUInteger total = [currentWrite->buffer length];
+
+ if (tagPtr != NULL) *tagPtr = currentWrite->tag;
+ if (donePtr != NULL) *donePtr = done;
+ if (totalPtr != NULL) *totalPtr = total;
+
+ result = (float)done / (float)total;
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+/**
+ * Conditionally starts a new write.
+ *
+ * It is called when:
+ * - a user requests a write
+ * - after a write request has finished (to handle the next request)
+ * - immediately after the socket opens to handle any pending requests
+ *
+ * This method also handles auto-disconnect post read/write completion.
+**/
+- (void)maybeDequeueWrite
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+
+ // If we're not currently processing a write AND we have an available write stream
+ if ((currentWrite == nil) && (flags & kConnected))
+ {
+ if ([writeQueue count] > 0)
+ {
+ // Dequeue the next object in the write queue
+ currentWrite = [writeQueue objectAtIndex:0];
+ [writeQueue removeObjectAtIndex:0];
+
+
+ if ([currentWrite isKindOfClass:[GCDAsyncSpecialPacket class]])
+ {
+ LogVerbose(@"Dequeued GCDAsyncSpecialPacket");
+
+ // Attempt to start TLS
+ flags |= kStartingWriteTLS;
+
+ // This method won't do anything unless both kStartingReadTLS and kStartingWriteTLS are set
+ [self maybeStartTLS];
+ }
+ else
+ {
+ LogVerbose(@"Dequeued GCDAsyncWritePacket");
+
+ // Setup write timer (if needed)
+ [self setupWriteTimerWithTimeout:currentWrite->timeout];
+
+ // Immediately write, if possible
+ [self doWriteData];
+ }
+ }
+ else if (flags & kDisconnectAfterWrites)
+ {
+ if (flags & kDisconnectAfterReads)
+ {
+ if (([readQueue count] == 0) && (currentRead == nil))
+ {
+ [self closeWithError:nil];
+ }
+ }
+ else
+ {
+ [self closeWithError:nil];
+ }
+ }
+ }
+}
+
+- (void)doWriteData
+{
+ LogTrace();
+
+ // This method is called by the writeSource via the socketQueue
+
+ if ((currentWrite == nil) || (flags & kWritesPaused))
+ {
+ LogVerbose(@"No currentWrite or kWritesPaused");
+
+ // Unable to write at this time
+
+ if ([self usingCFStreamForTLS])
+ {
+ // CFWriteStream only fires once when there is available data.
+ // It won't fire again until we've invoked CFWriteStreamWrite.
+ }
+ else
+ {
+ // If the writeSource is firing, we need to pause it
+ // or else it will continue to fire over and over again.
+
+ if (flags & kSocketCanAcceptBytes)
+ {
+ [self suspendWriteSource];
+ }
+ }
+ return;
+ }
+
+ if (!(flags & kSocketCanAcceptBytes))
+ {
+ LogVerbose(@"No space available to write...");
+
+ // No space available to write.
+
+ if (![self usingCFStreamForTLS])
+ {
+ // Need to wait for writeSource to fire and notify us of
+ // available space in the socket's internal write buffer.
+
+ [self resumeWriteSource];
+ }
+ return;
+ }
+
+ if (flags & kStartingWriteTLS)
+ {
+ LogVerbose(@"Waiting for SSL/TLS handshake to complete");
+
+ // The writeQueue is waiting for SSL/TLS handshake to complete.
+
+ if (flags & kStartingReadTLS)
+ {
+ if ([self usingSecureTransportForTLS] && lastSSLHandshakeError == errSSLWouldBlock)
+ {
+ // We are in the process of a SSL Handshake.
+ // We were waiting for available space in the socket's internal OS buffer to continue writing.
+
+ [self ssl_continueSSLHandshake];
+ }
+ }
+ else
+ {
+ // We are still waiting for the readQueue to drain and start the SSL/TLS process.
+ // We now know we can write to the socket.
+
+ if (![self usingCFStreamForTLS])
+ {
+ // Suspend the write source or else it will continue to fire nonstop.
+
+ [self suspendWriteSource];
+ }
+ }
+
+ return;
+ }
+
+ // Note: This method is not called if currentWrite is a GCDAsyncSpecialPacket (startTLS packet)
+
+ BOOL waiting = NO;
+ NSError *error = nil;
+ size_t bytesWritten = 0;
+
+ if (flags & kSocketSecure)
+ {
+ if ([self usingCFStreamForTLS])
+ {
+ #if TARGET_OS_IPHONE
+
+ //
+ // Writing data using CFStream (over internal TLS)
+ //
+
+ const uint8_t *buffer = (const uint8_t *)[currentWrite->buffer bytes] + currentWrite->bytesDone;
+
+ NSUInteger bytesToWrite = [currentWrite->buffer length] - currentWrite->bytesDone;
+
+ if (bytesToWrite > SIZE_MAX) // NSUInteger may be bigger than size_t (write param 3)
+ {
+ bytesToWrite = SIZE_MAX;
+ }
+
+ CFIndex result = CFWriteStreamWrite(writeStream, buffer, (CFIndex)bytesToWrite);
+ LogVerbose(@"CFWriteStreamWrite(%lu) = %li", (unsigned long)bytesToWrite, result);
+
+ if (result < 0)
+ {
+ error = (__bridge_transfer NSError *)CFWriteStreamCopyError(writeStream);
+ }
+ else
+ {
+ bytesWritten = (size_t)result;
+
+ // We always set waiting to true in this scenario.
+ // CFStream may have altered our underlying socket to non-blocking.
+ // Thus if we attempt to write without a callback, we may end up blocking our queue.
+ waiting = YES;
+ }
+
+ #endif
+ }
+ else
+ {
+ // We're going to use the SSLWrite function.
+ //
+ // OSStatus SSLWrite(SSLContextRef context, const void *data, size_t dataLength, size_t *processed)
+ //
+ // Parameters:
+ // context - An SSL session context reference.
+ // data - A pointer to the buffer of data to write.
+ // dataLength - The amount, in bytes, of data to write.
+ // processed - On return, the length, in bytes, of the data actually written.
+ //
+ // It sounds pretty straight-forward,
+ // but there are a few caveats you should be aware of.
+ //
+ // The SSLWrite method operates in a non-obvious (and rather annoying) manner.
+ // According to the documentation:
+ //
+ // Because you may configure the underlying connection to operate in a non-blocking manner,
+ // a write operation might return errSSLWouldBlock, indicating that less data than requested
+ // was actually transferred. In this case, you should repeat the call to SSLWrite until some
+ // other result is returned.
+ //
+ // This sounds perfect, but when our SSLWriteFunction returns errSSLWouldBlock,
+ // then the SSLWrite method returns (with the proper errSSLWouldBlock return value),
+ // but it sets processed to dataLength !!
+ //
+ // In other words, if the SSLWrite function doesn't completely write all the data we tell it to,
+ // then it doesn't tell us how many bytes were actually written. So, for example, if we tell it to
+ // write 256 bytes then it might actually write 128 bytes, but then report 0 bytes written.
+ //
+ // You might be wondering:
+ // If the SSLWrite function doesn't tell us how many bytes were written,
+ // then how in the world are we supposed to update our parameters (buffer & bytesToWrite)
+ // for the next time we invoke SSLWrite?
+ //
+ // The answer is that SSLWrite cached all the data we told it to write,
+ // and it will push out that data next time we call SSLWrite.
+ // If we call SSLWrite with new data, it will push out the cached data first, and then the new data.
+ // If we call SSLWrite with empty data, then it will simply push out the cached data.
+ //
+ // For this purpose we're going to break large writes into a series of smaller writes.
+ // This allows us to report progress back to the delegate.
+
+ OSStatus result;
+
+ BOOL hasCachedDataToWrite = (sslWriteCachedLength > 0);
+ BOOL hasNewDataToWrite = YES;
+
+ if (hasCachedDataToWrite)
+ {
+ size_t processed = 0;
+
+ result = SSLWrite(sslContext, NULL, 0, &processed);
+
+ if (result == noErr)
+ {
+ bytesWritten = sslWriteCachedLength;
+ sslWriteCachedLength = 0;
+
+ if ([currentWrite->buffer length] == (currentWrite->bytesDone + bytesWritten))
+ {
+ // We've written all data for the current write.
+ hasNewDataToWrite = NO;
+ }
+ }
+ else
+ {
+ if (result == errSSLWouldBlock)
+ {
+ waiting = YES;
+ }
+ else
+ {
+ error = [self sslError:result];
+ }
+
+ // Can't write any new data since we were unable to write the cached data.
+ hasNewDataToWrite = NO;
+ }
+ }
+
+ if (hasNewDataToWrite)
+ {
+ const uint8_t *buffer = (const uint8_t *)[currentWrite->buffer bytes]
+ + currentWrite->bytesDone
+ + bytesWritten;
+
+ NSUInteger bytesToWrite = [currentWrite->buffer length] - currentWrite->bytesDone - bytesWritten;
+
+ if (bytesToWrite > SIZE_MAX) // NSUInteger may be bigger than size_t (write param 3)
+ {
+ bytesToWrite = SIZE_MAX;
+ }
+
+ size_t bytesRemaining = bytesToWrite;
+
+ BOOL keepLooping = YES;
+ while (keepLooping)
+ {
+ const size_t sslMaxBytesToWrite = 32768;
+ size_t sslBytesToWrite = MIN(bytesRemaining, sslMaxBytesToWrite);
+ size_t sslBytesWritten = 0;
+
+ result = SSLWrite(sslContext, buffer, sslBytesToWrite, &sslBytesWritten);
+
+ if (result == noErr)
+ {
+ buffer += sslBytesWritten;
+ bytesWritten += sslBytesWritten;
+ bytesRemaining -= sslBytesWritten;
+
+ keepLooping = (bytesRemaining > 0);
+ }
+ else
+ {
+ if (result == errSSLWouldBlock)
+ {
+ waiting = YES;
+ sslWriteCachedLength = sslBytesToWrite;
+ }
+ else
+ {
+ error = [self sslError:result];
+ }
+
+ keepLooping = NO;
+ }
+
+ } // while (keepLooping)
+
+ } // if (hasNewDataToWrite)
+ }
+ }
+ else
+ {
+ //
+ // Writing data directly over raw socket
+ //
+
+ int socketFD = (socket4FD != SOCKET_NULL) ? socket4FD : (socket6FD != SOCKET_NULL) ? socket6FD : socketUN;
+
+ const uint8_t *buffer = (const uint8_t *)[currentWrite->buffer bytes] + currentWrite->bytesDone;
+
+ NSUInteger bytesToWrite = [currentWrite->buffer length] - currentWrite->bytesDone;
+
+ if (bytesToWrite > SIZE_MAX) // NSUInteger may be bigger than size_t (write param 3)
+ {
+ bytesToWrite = SIZE_MAX;
+ }
+
+ ssize_t result = write(socketFD, buffer, (size_t)bytesToWrite);
+ LogVerbose(@"wrote to socket = %zd", result);
+
+ // Check results
+ if (result < 0)
+ {
+ if (errno == EWOULDBLOCK)
+ {
+ waiting = YES;
+ }
+ else
+ {
+ error = [self errnoErrorWithReason:@"Error in write() function"];
+ }
+ }
+ else
+ {
+ bytesWritten = result;
+ }
+ }
+
+ // We're done with our writing.
+ // If we explictly ran into a situation where the socket told us there was no room in the buffer,
+ // then we immediately resume listening for notifications.
+ //
+ // We must do this before we dequeue another write,
+ // as that may in turn invoke this method again.
+ //
+ // Note that if CFStream is involved, it may have maliciously put our socket in blocking mode.
+
+ if (waiting)
+ {
+ flags &= ~kSocketCanAcceptBytes;
+
+ if (![self usingCFStreamForTLS])
+ {
+ [self resumeWriteSource];
+ }
+ }
+
+ // Check our results
+
+ BOOL done = NO;
+
+ if (bytesWritten > 0)
+ {
+ // Update total amount read for the current write
+ currentWrite->bytesDone += bytesWritten;
+ LogVerbose(@"currentWrite->bytesDone = %lu", (unsigned long)currentWrite->bytesDone);
+
+ // Is packet done?
+ done = (currentWrite->bytesDone == [currentWrite->buffer length]);
+ }
+
+ if (done)
+ {
+ [self completeCurrentWrite];
+
+ if (!error)
+ {
+ dispatch_async(socketQueue, ^{ @autoreleasepool{
+
+ [self maybeDequeueWrite];
+ }});
+ }
+ }
+ else
+ {
+ // We were unable to finish writing the data,
+ // so we're waiting for another callback to notify us of available space in the lower-level output buffer.
+
+ if (!waiting && !error)
+ {
+ // This would be the case if our write was able to accept some data, but not all of it.
+
+ flags &= ~kSocketCanAcceptBytes;
+
+ if (![self usingCFStreamForTLS])
+ {
+ [self resumeWriteSource];
+ }
+ }
+
+ if (bytesWritten > 0)
+ {
+ // We're not done with the entire write, but we have written some bytes
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socket:didWritePartialDataOfLength:tag:)])
+ {
+ long theWriteTag = currentWrite->tag;
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socket:self didWritePartialDataOfLength:bytesWritten tag:theWriteTag];
+ }});
+ }
+ }
+ }
+
+ // Check for errors
+
+ if (error)
+ {
+ [self closeWithError:[self errnoErrorWithReason:@"Error in write() function"]];
+ }
+
+ // Do not add any code here without first adding a return statement in the error case above.
+}
+
+- (void)completeCurrentWrite
+{
+ LogTrace();
+
+ NSAssert(currentWrite, @"Trying to complete current write when there is no current write.");
+
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socket:didWriteDataWithTag:)])
+ {
+ long theWriteTag = currentWrite->tag;
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socket:self didWriteDataWithTag:theWriteTag];
+ }});
+ }
+
+ [self endCurrentWrite];
+}
+
+- (void)endCurrentWrite
+{
+ if (writeTimer)
+ {
+ dispatch_source_cancel(writeTimer);
+ writeTimer = NULL;
+ }
+
+ currentWrite = nil;
+}
+
+- (void)setupWriteTimerWithTimeout:(NSTimeInterval)timeout
+{
+ if (timeout >= 0.0)
+ {
+ writeTimer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, socketQueue);
+
+ __weak GCDAsyncSocket *weakSelf = self;
+
+ dispatch_source_set_event_handler(writeTimer, ^{ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf == nil) return_from_block;
+
+ [strongSelf doWriteTimeout];
+
+ #pragma clang diagnostic pop
+ }});
+
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_source_t theWriteTimer = writeTimer;
+ dispatch_source_set_cancel_handler(writeTimer, ^{
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ LogVerbose(@"dispatch_release(writeTimer)");
+ dispatch_release(theWriteTimer);
+
+ #pragma clang diagnostic pop
+ });
+ #endif
+
+ dispatch_time_t tt = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(timeout * NSEC_PER_SEC));
+
+ dispatch_source_set_timer(writeTimer, tt, DISPATCH_TIME_FOREVER, 0);
+ dispatch_resume(writeTimer);
+ }
+}
+
+- (void)doWriteTimeout
+{
+ // This is a little bit tricky.
+ // Ideally we'd like to synchronously query the delegate about a timeout extension.
+ // But if we do so synchronously we risk a possible deadlock.
+ // So instead we have to do so asynchronously, and callback to ourselves from within the delegate block.
+
+ flags |= kWritesPaused;
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socket:shouldTimeoutWriteWithTag:elapsed:bytesDone:)])
+ {
+ GCDAsyncWritePacket *theWrite = currentWrite;
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ NSTimeInterval timeoutExtension = 0.0;
+
+ timeoutExtension = [theDelegate socket:self shouldTimeoutWriteWithTag:theWrite->tag
+ elapsed:theWrite->timeout
+ bytesDone:theWrite->bytesDone];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ [self doWriteTimeoutWithExtension:timeoutExtension];
+ }});
+ }});
+ }
+ else
+ {
+ [self doWriteTimeoutWithExtension:0.0];
+ }
+}
+
+- (void)doWriteTimeoutWithExtension:(NSTimeInterval)timeoutExtension
+{
+ if (currentWrite)
+ {
+ if (timeoutExtension > 0.0)
+ {
+ currentWrite->timeout += timeoutExtension;
+
+ // Reschedule the timer
+ dispatch_time_t tt = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(timeoutExtension * NSEC_PER_SEC));
+ dispatch_source_set_timer(writeTimer, tt, DISPATCH_TIME_FOREVER, 0);
+
+ // Unpause writes, and continue
+ flags &= ~kWritesPaused;
+ [self doWriteData];
+ }
+ else
+ {
+ LogVerbose(@"WriteTimeout");
+
+ [self closeWithError:[self writeTimeoutError]];
+ }
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Security
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (void)startTLS:(NSDictionary *)tlsSettings
+{
+ LogTrace();
+
+ if (tlsSettings == nil)
+ {
+ // Passing nil/NULL to CFReadStreamSetProperty will appear to work the same as passing an empty dictionary,
+ // but causes problems if we later try to fetch the remote host's certificate.
+ //
+ // To be exact, it causes the following to return NULL instead of the normal result:
+ // CFReadStreamCopyProperty(readStream, kCFStreamPropertySSLPeerCertificates)
+ //
+ // So we use an empty dictionary instead, which works perfectly.
+
+ tlsSettings = [NSDictionary dictionary];
+ }
+
+ GCDAsyncSpecialPacket *packet = [[GCDAsyncSpecialPacket alloc] initWithTLSSettings:tlsSettings];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ if ((flags & kSocketStarted) && !(flags & kQueuedTLS) && !(flags & kForbidReadsWrites))
+ {
+ [readQueue addObject:packet];
+ [writeQueue addObject:packet];
+
+ flags |= kQueuedTLS;
+
+ [self maybeDequeueRead];
+ [self maybeDequeueWrite];
+ }
+ }});
+
+}
+
+- (void)maybeStartTLS
+{
+ // We can't start TLS until:
+ // - All queued reads prior to the user calling startTLS are complete
+ // - All queued writes prior to the user calling startTLS are complete
+ //
+ // We'll know these conditions are met when both kStartingReadTLS and kStartingWriteTLS are set
+
+ if ((flags & kStartingReadTLS) && (flags & kStartingWriteTLS))
+ {
+ BOOL useSecureTransport = YES;
+
+ #if TARGET_OS_IPHONE
+ {
+ GCDAsyncSpecialPacket *tlsPacket = (GCDAsyncSpecialPacket *)currentRead;
+ NSDictionary *tlsSettings = @{};
+ if (tlsPacket) {
+ tlsSettings = tlsPacket->tlsSettings;
+ }
+ NSNumber *value = [tlsSettings objectForKey:GCDAsyncSocketUseCFStreamForTLS];
+ if (value && [value boolValue])
+ useSecureTransport = NO;
+ }
+ #endif
+
+ if (useSecureTransport)
+ {
+ [self ssl_startTLS];
+ }
+ else
+ {
+ #if TARGET_OS_IPHONE
+ [self cf_startTLS];
+ #endif
+ }
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Security via SecureTransport
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (OSStatus)sslReadWithBuffer:(void *)buffer length:(size_t *)bufferLength
+{
+ LogVerbose(@"sslReadWithBuffer:%p length:%lu", buffer, (unsigned long)*bufferLength);
+
+ if ((socketFDBytesAvailable == 0) && ([sslPreBuffer availableBytes] == 0))
+ {
+ LogVerbose(@"%@ - No data available to read...", THIS_METHOD);
+
+ // No data available to read.
+ //
+ // Need to wait for readSource to fire and notify us of
+ // available data in the socket's internal read buffer.
+
+ [self resumeReadSource];
+
+ *bufferLength = 0;
+ return errSSLWouldBlock;
+ }
+
+ size_t totalBytesRead = 0;
+ size_t totalBytesLeftToBeRead = *bufferLength;
+
+ BOOL done = NO;
+ BOOL socketError = NO;
+
+ //
+ // STEP 1 : READ FROM SSL PRE BUFFER
+ //
+
+ size_t sslPreBufferLength = [sslPreBuffer availableBytes];
+
+ if (sslPreBufferLength > 0)
+ {
+ LogVerbose(@"%@: Reading from SSL pre buffer...", THIS_METHOD);
+
+ size_t bytesToCopy;
+ if (sslPreBufferLength > totalBytesLeftToBeRead)
+ bytesToCopy = totalBytesLeftToBeRead;
+ else
+ bytesToCopy = sslPreBufferLength;
+
+ LogVerbose(@"%@: Copying %zu bytes from sslPreBuffer", THIS_METHOD, bytesToCopy);
+
+ memcpy(buffer, [sslPreBuffer readBuffer], bytesToCopy);
+ [sslPreBuffer didRead:bytesToCopy];
+
+ LogVerbose(@"%@: sslPreBuffer.length = %zu", THIS_METHOD, [sslPreBuffer availableBytes]);
+
+ totalBytesRead += bytesToCopy;
+ totalBytesLeftToBeRead -= bytesToCopy;
+
+ done = (totalBytesLeftToBeRead == 0);
+
+ if (done) LogVerbose(@"%@: Complete", THIS_METHOD);
+ }
+
+ //
+ // STEP 2 : READ FROM SOCKET
+ //
+
+ if (!done && (socketFDBytesAvailable > 0))
+ {
+ LogVerbose(@"%@: Reading from socket...", THIS_METHOD);
+
+ int socketFD = (socket4FD != SOCKET_NULL) ? socket4FD : (socket6FD != SOCKET_NULL) ? socket6FD : socketUN;
+
+ BOOL readIntoPreBuffer;
+ size_t bytesToRead;
+ uint8_t *buf;
+
+ if (socketFDBytesAvailable > totalBytesLeftToBeRead)
+ {
+ // Read all available data from socket into sslPreBuffer.
+ // Then copy requested amount into dataBuffer.
+
+ LogVerbose(@"%@: Reading into sslPreBuffer...", THIS_METHOD);
+
+ [sslPreBuffer ensureCapacityForWrite:socketFDBytesAvailable];
+
+ readIntoPreBuffer = YES;
+ bytesToRead = (size_t)socketFDBytesAvailable;
+ buf = [sslPreBuffer writeBuffer];
+ }
+ else
+ {
+ // Read available data from socket directly into dataBuffer.
+
+ LogVerbose(@"%@: Reading directly into dataBuffer...", THIS_METHOD);
+
+ readIntoPreBuffer = NO;
+ bytesToRead = totalBytesLeftToBeRead;
+ buf = (uint8_t *)buffer + totalBytesRead;
+ }
+
+ ssize_t result = read(socketFD, buf, bytesToRead);
+ LogVerbose(@"%@: read from socket = %zd", THIS_METHOD, result);
+
+ if (result < 0)
+ {
+ LogVerbose(@"%@: read errno = %i", THIS_METHOD, errno);
+
+ if (errno != EWOULDBLOCK)
+ {
+ socketError = YES;
+ }
+
+ socketFDBytesAvailable = 0;
+ }
+ else if (result == 0)
+ {
+ LogVerbose(@"%@: read EOF", THIS_METHOD);
+
+ socketError = YES;
+ socketFDBytesAvailable = 0;
+ }
+ else
+ {
+ size_t bytesReadFromSocket = result;
+
+ if (socketFDBytesAvailable > bytesReadFromSocket)
+ socketFDBytesAvailable -= bytesReadFromSocket;
+ else
+ socketFDBytesAvailable = 0;
+
+ if (readIntoPreBuffer)
+ {
+ [sslPreBuffer didWrite:bytesReadFromSocket];
+
+ size_t bytesToCopy = MIN(totalBytesLeftToBeRead, bytesReadFromSocket);
+
+ LogVerbose(@"%@: Copying %zu bytes out of sslPreBuffer", THIS_METHOD, bytesToCopy);
+
+ memcpy((uint8_t *)buffer + totalBytesRead, [sslPreBuffer readBuffer], bytesToCopy);
+ [sslPreBuffer didRead:bytesToCopy];
+
+ totalBytesRead += bytesToCopy;
+ totalBytesLeftToBeRead -= bytesToCopy;
+
+ LogVerbose(@"%@: sslPreBuffer.length = %zu", THIS_METHOD, [sslPreBuffer availableBytes]);
+ }
+ else
+ {
+ totalBytesRead += bytesReadFromSocket;
+ totalBytesLeftToBeRead -= bytesReadFromSocket;
+ }
+
+ done = (totalBytesLeftToBeRead == 0);
+
+ if (done) LogVerbose(@"%@: Complete", THIS_METHOD);
+ }
+ }
+
+ *bufferLength = totalBytesRead;
+
+ if (done)
+ return noErr;
+
+ if (socketError)
+ return errSSLClosedAbort;
+
+ return errSSLWouldBlock;
+}
+
+- (OSStatus)sslWriteWithBuffer:(const void *)buffer length:(size_t *)bufferLength
+{
+ if (!(flags & kSocketCanAcceptBytes))
+ {
+ // Unable to write.
+ //
+ // Need to wait for writeSource to fire and notify us of
+ // available space in the socket's internal write buffer.
+
+ [self resumeWriteSource];
+
+ *bufferLength = 0;
+ return errSSLWouldBlock;
+ }
+
+ size_t bytesToWrite = *bufferLength;
+ size_t bytesWritten = 0;
+
+ BOOL done = NO;
+ BOOL socketError = NO;
+
+ int socketFD = (socket4FD != SOCKET_NULL) ? socket4FD : (socket6FD != SOCKET_NULL) ? socket6FD : socketUN;
+
+ ssize_t result = write(socketFD, buffer, bytesToWrite);
+
+ if (result < 0)
+ {
+ if (errno != EWOULDBLOCK)
+ {
+ socketError = YES;
+ }
+
+ flags &= ~kSocketCanAcceptBytes;
+ }
+ else if (result == 0)
+ {
+ flags &= ~kSocketCanAcceptBytes;
+ }
+ else
+ {
+ bytesWritten = result;
+
+ done = (bytesWritten == bytesToWrite);
+ }
+
+ *bufferLength = bytesWritten;
+
+ if (done)
+ return noErr;
+
+ if (socketError)
+ return errSSLClosedAbort;
+
+ return errSSLWouldBlock;
+}
+
+static OSStatus SSLReadFunction(SSLConnectionRef connection, void *data, size_t *dataLength)
+{
+ GCDAsyncSocket *asyncSocket = (__bridge GCDAsyncSocket *)connection;
+
+ NSCAssert(dispatch_get_specific(asyncSocket->IsOnSocketQueueOrTargetQueueKey), @"What the deuce?");
+
+ return [asyncSocket sslReadWithBuffer:data length:dataLength];
+}
+
+static OSStatus SSLWriteFunction(SSLConnectionRef connection, const void *data, size_t *dataLength)
+{
+ GCDAsyncSocket *asyncSocket = (__bridge GCDAsyncSocket *)connection;
+
+ NSCAssert(dispatch_get_specific(asyncSocket->IsOnSocketQueueOrTargetQueueKey), @"What the deuce?");
+
+ return [asyncSocket sslWriteWithBuffer:data length:dataLength];
+}
+
+- (void)ssl_startTLS
+{
+ LogTrace();
+
+ LogVerbose(@"Starting TLS (via SecureTransport)...");
+
+ OSStatus status;
+
+ GCDAsyncSpecialPacket *tlsPacket = (GCDAsyncSpecialPacket *)currentRead;
+ if (tlsPacket == nil) // Code to quiet the analyzer
+ {
+ NSAssert(NO, @"Logic error");
+
+ [self closeWithError:[self otherError:@"Logic error"]];
+ return;
+ }
+ NSDictionary *tlsSettings = tlsPacket->tlsSettings;
+
+ // Create SSLContext, and setup IO callbacks and connection ref
+
+ BOOL isServer = [[tlsSettings objectForKey:(__bridge NSString *)kCFStreamSSLIsServer] boolValue];
+
+ #if TARGET_OS_IPHONE || (__MAC_OS_X_VERSION_MIN_REQUIRED >= 1080)
+ {
+ if (isServer)
+ sslContext = SSLCreateContext(kCFAllocatorDefault, kSSLServerSide, kSSLStreamType);
+ else
+ sslContext = SSLCreateContext(kCFAllocatorDefault, kSSLClientSide, kSSLStreamType);
+
+ if (sslContext == NULL)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLCreateContext"]];
+ return;
+ }
+ }
+ #else // (__MAC_OS_X_VERSION_MIN_REQUIRED < 1080)
+ {
+ status = SSLNewContext(isServer, &sslContext);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLNewContext"]];
+ return;
+ }
+ }
+ #endif
+
+ status = SSLSetIOFuncs(sslContext, &SSLReadFunction, &SSLWriteFunction);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetIOFuncs"]];
+ return;
+ }
+
+ status = SSLSetConnection(sslContext, (__bridge SSLConnectionRef)self);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetConnection"]];
+ return;
+ }
+
+
+ BOOL shouldManuallyEvaluateTrust = [[tlsSettings objectForKey:GCDAsyncSocketManuallyEvaluateTrust] boolValue];
+ if (shouldManuallyEvaluateTrust)
+ {
+ if (isServer)
+ {
+ [self closeWithError:[self otherError:@"Manual trust validation is not supported for server sockets"]];
+ return;
+ }
+
+ status = SSLSetSessionOption(sslContext, kSSLSessionOptionBreakOnServerAuth, true);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetSessionOption"]];
+ return;
+ }
+
+ #if !TARGET_OS_IPHONE && (__MAC_OS_X_VERSION_MIN_REQUIRED < 1080)
+
+ // Note from Apple's documentation:
+ //
+ // It is only necessary to call SSLSetEnableCertVerify on the Mac prior to OS X 10.8.
+ // On OS X 10.8 and later setting kSSLSessionOptionBreakOnServerAuth always disables the
+ // built-in trust evaluation. All versions of iOS behave like OS X 10.8 and thus
+ // SSLSetEnableCertVerify is not available on that platform at all.
+
+ status = SSLSetEnableCertVerify(sslContext, NO);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetEnableCertVerify"]];
+ return;
+ }
+
+ #endif
+ }
+
+ // Configure SSLContext from given settings
+ //
+ // Checklist:
+ // 1. kCFStreamSSLPeerName
+ // 2. kCFStreamSSLCertificates
+ // 3. GCDAsyncSocketSSLPeerID
+ // 4. GCDAsyncSocketSSLProtocolVersionMin
+ // 5. GCDAsyncSocketSSLProtocolVersionMax
+ // 6. GCDAsyncSocketSSLSessionOptionFalseStart
+ // 7. GCDAsyncSocketSSLSessionOptionSendOneByteRecord
+ // 8. GCDAsyncSocketSSLCipherSuites
+ // 9. GCDAsyncSocketSSLDiffieHellmanParameters (Mac)
+ //
+ // Deprecated (throw error):
+ // 10. kCFStreamSSLAllowsAnyRoot
+ // 11. kCFStreamSSLAllowsExpiredRoots
+ // 12. kCFStreamSSLAllowsExpiredCertificates
+ // 13. kCFStreamSSLValidatesCertificateChain
+ // 14. kCFStreamSSLLevel
+
+ id value;
+
+ // 1. kCFStreamSSLPeerName
+
+ value = [tlsSettings objectForKey:(__bridge NSString *)kCFStreamSSLPeerName];
+ if ([value isKindOfClass:[NSString class]])
+ {
+ NSString *peerName = (NSString *)value;
+
+ const char *peer = [peerName UTF8String];
+ size_t peerLen = strlen(peer);
+
+ status = SSLSetPeerDomainName(sslContext, peer, peerLen);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetPeerDomainName"]];
+ return;
+ }
+ }
+ else if (value)
+ {
+ NSAssert(NO, @"Invalid value for kCFStreamSSLPeerName. Value must be of type NSString.");
+
+ [self closeWithError:[self otherError:@"Invalid value for kCFStreamSSLPeerName."]];
+ return;
+ }
+
+ // 2. kCFStreamSSLCertificates
+
+ value = [tlsSettings objectForKey:(__bridge NSString *)kCFStreamSSLCertificates];
+ if ([value isKindOfClass:[NSArray class]])
+ {
+ CFArrayRef certs = (__bridge CFArrayRef)value;
+
+ status = SSLSetCertificate(sslContext, certs);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetCertificate"]];
+ return;
+ }
+ }
+ else if (value)
+ {
+ NSAssert(NO, @"Invalid value for kCFStreamSSLCertificates. Value must be of type NSArray.");
+
+ [self closeWithError:[self otherError:@"Invalid value for kCFStreamSSLCertificates."]];
+ return;
+ }
+
+ // 3. GCDAsyncSocketSSLPeerID
+
+ value = [tlsSettings objectForKey:GCDAsyncSocketSSLPeerID];
+ if ([value isKindOfClass:[NSData class]])
+ {
+ NSData *peerIdData = (NSData *)value;
+
+ status = SSLSetPeerID(sslContext, [peerIdData bytes], [peerIdData length]);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetPeerID"]];
+ return;
+ }
+ }
+ else if (value)
+ {
+ NSAssert(NO, @"Invalid value for GCDAsyncSocketSSLPeerID. Value must be of type NSData."
+ @" (You can convert strings to data using a method like"
+ @" [string dataUsingEncoding:NSUTF8StringEncoding])");
+
+ [self closeWithError:[self otherError:@"Invalid value for GCDAsyncSocketSSLPeerID."]];
+ return;
+ }
+
+ // 4. GCDAsyncSocketSSLProtocolVersionMin
+
+ value = [tlsSettings objectForKey:GCDAsyncSocketSSLProtocolVersionMin];
+ if ([value isKindOfClass:[NSNumber class]])
+ {
+ SSLProtocol minProtocol = (SSLProtocol)[(NSNumber *)value intValue];
+ if (minProtocol != kSSLProtocolUnknown)
+ {
+ status = SSLSetProtocolVersionMin(sslContext, minProtocol);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetProtocolVersionMin"]];
+ return;
+ }
+ }
+ }
+ else if (value)
+ {
+ NSAssert(NO, @"Invalid value for GCDAsyncSocketSSLProtocolVersionMin. Value must be of type NSNumber.");
+
+ [self closeWithError:[self otherError:@"Invalid value for GCDAsyncSocketSSLProtocolVersionMin."]];
+ return;
+ }
+
+ // 5. GCDAsyncSocketSSLProtocolVersionMax
+
+ value = [tlsSettings objectForKey:GCDAsyncSocketSSLProtocolVersionMax];
+ if ([value isKindOfClass:[NSNumber class]])
+ {
+ SSLProtocol maxProtocol = (SSLProtocol)[(NSNumber *)value intValue];
+ if (maxProtocol != kSSLProtocolUnknown)
+ {
+ status = SSLSetProtocolVersionMax(sslContext, maxProtocol);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetProtocolVersionMax"]];
+ return;
+ }
+ }
+ }
+ else if (value)
+ {
+ NSAssert(NO, @"Invalid value for GCDAsyncSocketSSLProtocolVersionMax. Value must be of type NSNumber.");
+
+ [self closeWithError:[self otherError:@"Invalid value for GCDAsyncSocketSSLProtocolVersionMax."]];
+ return;
+ }
+
+ // 6. GCDAsyncSocketSSLSessionOptionFalseStart
+
+ value = [tlsSettings objectForKey:GCDAsyncSocketSSLSessionOptionFalseStart];
+ if ([value isKindOfClass:[NSNumber class]])
+ {
+ status = SSLSetSessionOption(sslContext, kSSLSessionOptionFalseStart, [value boolValue]);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetSessionOption (kSSLSessionOptionFalseStart)"]];
+ return;
+ }
+ }
+ else if (value)
+ {
+ NSAssert(NO, @"Invalid value for GCDAsyncSocketSSLSessionOptionFalseStart. Value must be of type NSNumber.");
+
+ [self closeWithError:[self otherError:@"Invalid value for GCDAsyncSocketSSLSessionOptionFalseStart."]];
+ return;
+ }
+
+ // 7. GCDAsyncSocketSSLSessionOptionSendOneByteRecord
+
+ value = [tlsSettings objectForKey:GCDAsyncSocketSSLSessionOptionSendOneByteRecord];
+ if ([value isKindOfClass:[NSNumber class]])
+ {
+ status = SSLSetSessionOption(sslContext, kSSLSessionOptionSendOneByteRecord, [value boolValue]);
+ if (status != noErr)
+ {
+ [self closeWithError:
+ [self otherError:@"Error in SSLSetSessionOption (kSSLSessionOptionSendOneByteRecord)"]];
+ return;
+ }
+ }
+ else if (value)
+ {
+ NSAssert(NO, @"Invalid value for GCDAsyncSocketSSLSessionOptionSendOneByteRecord."
+ @" Value must be of type NSNumber.");
+
+ [self closeWithError:[self otherError:@"Invalid value for GCDAsyncSocketSSLSessionOptionSendOneByteRecord."]];
+ return;
+ }
+
+ // 8. GCDAsyncSocketSSLCipherSuites
+
+ value = [tlsSettings objectForKey:GCDAsyncSocketSSLCipherSuites];
+ if ([value isKindOfClass:[NSArray class]])
+ {
+ NSArray *cipherSuites = (NSArray *)value;
+ NSUInteger numberCiphers = [cipherSuites count];
+ SSLCipherSuite ciphers[numberCiphers];
+
+ NSUInteger cipherIndex;
+ for (cipherIndex = 0; cipherIndex < numberCiphers; cipherIndex++)
+ {
+ NSNumber *cipherObject = [cipherSuites objectAtIndex:cipherIndex];
+ ciphers[cipherIndex] = [cipherObject shortValue];
+ }
+
+ status = SSLSetEnabledCiphers(sslContext, ciphers, numberCiphers);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetEnabledCiphers"]];
+ return;
+ }
+ }
+ else if (value)
+ {
+ NSAssert(NO, @"Invalid value for GCDAsyncSocketSSLCipherSuites. Value must be of type NSArray.");
+
+ [self closeWithError:[self otherError:@"Invalid value for GCDAsyncSocketSSLCipherSuites."]];
+ return;
+ }
+
+ // 9. GCDAsyncSocketSSLDiffieHellmanParameters
+
+ #if !TARGET_OS_IPHONE
+ value = [tlsSettings objectForKey:GCDAsyncSocketSSLDiffieHellmanParameters];
+ if ([value isKindOfClass:[NSData class]])
+ {
+ NSData *diffieHellmanData = (NSData *)value;
+
+ status = SSLSetDiffieHellmanParams(sslContext, [diffieHellmanData bytes], [diffieHellmanData length]);
+ if (status != noErr)
+ {
+ [self closeWithError:[self otherError:@"Error in SSLSetDiffieHellmanParams"]];
+ return;
+ }
+ }
+ else if (value)
+ {
+ NSAssert(NO, @"Invalid value for GCDAsyncSocketSSLDiffieHellmanParameters. Value must be of type NSData.");
+
+ [self closeWithError:[self otherError:@"Invalid value for GCDAsyncSocketSSLDiffieHellmanParameters."]];
+ return;
+ }
+ #endif
+
+ // DEPRECATED checks
+
+ // 10. kCFStreamSSLAllowsAnyRoot
+
+ #pragma clang diagnostic push
+ #pragma clang diagnostic ignored "-Wdeprecated-declarations"
+ value = [tlsSettings objectForKey:(__bridge NSString *)kCFStreamSSLAllowsAnyRoot];
+ #pragma clang diagnostic pop
+ if (value)
+ {
+ NSAssert(NO, @"Security option unavailable - kCFStreamSSLAllowsAnyRoot"
+ @" - You must use manual trust evaluation");
+
+ [self closeWithError:[self otherError:@"Security option unavailable - kCFStreamSSLAllowsAnyRoot"]];
+ return;
+ }
+
+ // 11. kCFStreamSSLAllowsExpiredRoots
+
+ #pragma clang diagnostic push
+ #pragma clang diagnostic ignored "-Wdeprecated-declarations"
+ value = [tlsSettings objectForKey:(__bridge NSString *)kCFStreamSSLAllowsExpiredRoots];
+ #pragma clang diagnostic pop
+ if (value)
+ {
+ NSAssert(NO, @"Security option unavailable - kCFStreamSSLAllowsExpiredRoots"
+ @" - You must use manual trust evaluation");
+
+ [self closeWithError:[self otherError:@"Security option unavailable - kCFStreamSSLAllowsExpiredRoots"]];
+ return;
+ }
+
+ // 12. kCFStreamSSLValidatesCertificateChain
+
+ #pragma clang diagnostic push
+ #pragma clang diagnostic ignored "-Wdeprecated-declarations"
+ value = [tlsSettings objectForKey:(__bridge NSString *)kCFStreamSSLValidatesCertificateChain];
+ #pragma clang diagnostic pop
+ if (value)
+ {
+ NSAssert(NO, @"Security option unavailable - kCFStreamSSLValidatesCertificateChain"
+ @" - You must use manual trust evaluation");
+
+ [self closeWithError:[self otherError:@"Security option unavailable - kCFStreamSSLValidatesCertificateChain"]];
+ return;
+ }
+
+ // 13. kCFStreamSSLAllowsExpiredCertificates
+
+ #pragma clang diagnostic push
+ #pragma clang diagnostic ignored "-Wdeprecated-declarations"
+ value = [tlsSettings objectForKey:(__bridge NSString *)kCFStreamSSLAllowsExpiredCertificates];
+ #pragma clang diagnostic pop
+ if (value)
+ {
+ NSAssert(NO, @"Security option unavailable - kCFStreamSSLAllowsExpiredCertificates"
+ @" - You must use manual trust evaluation");
+
+ [self closeWithError:[self otherError:@"Security option unavailable - kCFStreamSSLAllowsExpiredCertificates"]];
+ return;
+ }
+
+ // 14. kCFStreamSSLLevel
+
+ #pragma clang diagnostic push
+ #pragma clang diagnostic ignored "-Wdeprecated-declarations"
+ value = [tlsSettings objectForKey:(__bridge NSString *)kCFStreamSSLLevel];
+ #pragma clang diagnostic pop
+ if (value)
+ {
+ NSAssert(NO, @"Security option unavailable - kCFStreamSSLLevel"
+ @" - You must use GCDAsyncSocketSSLProtocolVersionMin & GCDAsyncSocketSSLProtocolVersionMax");
+
+ [self closeWithError:[self otherError:@"Security option unavailable - kCFStreamSSLLevel"]];
+ return;
+ }
+
+ // Setup the sslPreBuffer
+ //
+ // Any data in the preBuffer needs to be moved into the sslPreBuffer,
+ // as this data is now part of the secure read stream.
+
+ sslPreBuffer = [[GCDAsyncSocketPreBuffer alloc] initWithCapacity:(1024 * 4)];
+
+ size_t preBufferLength = [preBuffer availableBytes];
+
+ if (preBufferLength > 0)
+ {
+ [sslPreBuffer ensureCapacityForWrite:preBufferLength];
+
+ memcpy([sslPreBuffer writeBuffer], [preBuffer readBuffer], preBufferLength);
+ [preBuffer didRead:preBufferLength];
+ [sslPreBuffer didWrite:preBufferLength];
+ }
+
+ sslErrCode = lastSSLHandshakeError = noErr;
+
+ // Start the SSL Handshake process
+
+ [self ssl_continueSSLHandshake];
+}
+
+- (void)ssl_continueSSLHandshake
+{
+ LogTrace();
+
+ // If the return value is noErr, the session is ready for normal secure communication.
+ // If the return value is errSSLWouldBlock, the SSLHandshake function must be called again.
+ // If the return value is errSSLServerAuthCompleted, we ask delegate if we should trust the
+ // server and then call SSLHandshake again to resume the handshake or close the connection
+ // errSSLPeerBadCert SSL error.
+ // Otherwise, the return value indicates an error code.
+
+ OSStatus status = SSLHandshake(sslContext);
+ lastSSLHandshakeError = status;
+
+ if (status == noErr)
+ {
+ LogVerbose(@"SSLHandshake complete");
+
+ flags &= ~kStartingReadTLS;
+ flags &= ~kStartingWriteTLS;
+
+ flags |= kSocketSecure;
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socketDidSecure:)])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socketDidSecure:self];
+ }});
+ }
+
+ [self endCurrentRead];
+ [self endCurrentWrite];
+
+ [self maybeDequeueRead];
+ [self maybeDequeueWrite];
+ }
+ else if (status == errSSLPeerAuthCompleted)
+ {
+ LogVerbose(@"SSLHandshake peerAuthCompleted - awaiting delegate approval");
+
+ __block SecTrustRef trust = NULL;
+ status = SSLCopyPeerTrust(sslContext, &trust);
+ if (status != noErr)
+ {
+ [self closeWithError:[self sslError:status]];
+ return;
+ }
+
+ int aStateIndex = stateIndex;
+ dispatch_queue_t theSocketQueue = socketQueue;
+
+ __weak GCDAsyncSocket *weakSelf = self;
+
+ void (^comletionHandler)(BOOL) = ^(BOOL shouldTrust){ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ dispatch_async(theSocketQueue, ^{ @autoreleasepool {
+
+ if (trust) {
+ CFRelease(trust);
+ trust = NULL;
+ }
+
+ __strong GCDAsyncSocket *strongSelf = weakSelf;
+ if (strongSelf)
+ {
+ [strongSelf ssl_shouldTrustPeer:shouldTrust stateIndex:aStateIndex];
+ }
+ }});
+
+ #pragma clang diagnostic pop
+ }};
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socket:didReceiveTrust:completionHandler:)])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socket:self didReceiveTrust:trust completionHandler:comletionHandler];
+ }});
+ }
+ else
+ {
+ if (trust) {
+ CFRelease(trust);
+ trust = NULL;
+ }
+
+ NSString *msg = @"GCDAsyncSocketManuallyEvaluateTrust specified in tlsSettings,"
+ @" but delegate doesn't implement socket:shouldTrustPeer:";
+
+ [self closeWithError:[self otherError:msg]];
+ return;
+ }
+ }
+ else if (status == errSSLWouldBlock)
+ {
+ LogVerbose(@"SSLHandshake continues...");
+
+ // Handshake continues...
+ //
+ // This method will be called again from doReadData or doWriteData.
+ }
+ else
+ {
+ [self closeWithError:[self sslError:status]];
+ }
+}
+
+- (void)ssl_shouldTrustPeer:(BOOL)shouldTrust stateIndex:(int)aStateIndex
+{
+ LogTrace();
+
+ if (aStateIndex != stateIndex)
+ {
+ LogInfo(@"Ignoring ssl_shouldTrustPeer - invalid state (maybe disconnected)");
+
+ // One of the following is true
+ // - the socket was disconnected
+ // - the startTLS operation timed out
+ // - the completionHandler was already invoked once
+
+ return;
+ }
+
+ // Increment stateIndex to ensure completionHandler can only be called once.
+ stateIndex++;
+
+ if (shouldTrust)
+ {
+ NSAssert(lastSSLHandshakeError == errSSLPeerAuthCompleted, @"ssl_shouldTrustPeer called when last error is %d and not errSSLPeerAuthCompleted", (int)lastSSLHandshakeError);
+ [self ssl_continueSSLHandshake];
+ }
+ else
+ {
+ [self closeWithError:[self sslError:errSSLPeerBadCert]];
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Security via CFStream
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#if TARGET_OS_IPHONE
+
+- (void)cf_finishSSLHandshake
+{
+ LogTrace();
+
+ if ((flags & kStartingReadTLS) && (flags & kStartingWriteTLS))
+ {
+ flags &= ~kStartingReadTLS;
+ flags &= ~kStartingWriteTLS;
+
+ flags |= kSocketSecure;
+
+ __strong id theDelegate = delegate;
+
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(socketDidSecure:)])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate socketDidSecure:self];
+ }});
+ }
+
+ [self endCurrentRead];
+ [self endCurrentWrite];
+
+ [self maybeDequeueRead];
+ [self maybeDequeueWrite];
+ }
+}
+
+- (void)cf_abortSSLHandshake:(NSError *)error
+{
+ LogTrace();
+
+ if ((flags & kStartingReadTLS) && (flags & kStartingWriteTLS))
+ {
+ flags &= ~kStartingReadTLS;
+ flags &= ~kStartingWriteTLS;
+
+ [self closeWithError:error];
+ }
+}
+
+- (void)cf_startTLS
+{
+ LogTrace();
+
+ LogVerbose(@"Starting TLS (via CFStream)...");
+
+ if ([preBuffer availableBytes] > 0)
+ {
+ NSString *msg = @"Invalid TLS transition. Handshake has already been read from socket.";
+
+ [self closeWithError:[self otherError:msg]];
+ return;
+ }
+
+ [self suspendReadSource];
+ [self suspendWriteSource];
+
+ socketFDBytesAvailable = 0;
+ flags &= ~kSocketCanAcceptBytes;
+ flags &= ~kSecureSocketHasBytesAvailable;
+
+ flags |= kUsingCFStreamForTLS;
+
+ if (![self createReadAndWriteStream])
+ {
+ [self closeWithError:[self otherError:@"Error in CFStreamCreatePairWithSocket"]];
+ return;
+ }
+
+ if (![self registerForStreamCallbacksIncludingReadWrite:YES])
+ {
+ [self closeWithError:[self otherError:@"Error in CFStreamSetClient"]];
+ return;
+ }
+
+ if (![self addStreamsToRunLoop])
+ {
+ [self closeWithError:[self otherError:@"Error in CFStreamScheduleWithRunLoop"]];
+ return;
+ }
+
+ NSAssert([currentRead isKindOfClass:[GCDAsyncSpecialPacket class]], @"Invalid read packet for startTLS");
+ NSAssert([currentWrite isKindOfClass:[GCDAsyncSpecialPacket class]], @"Invalid write packet for startTLS");
+
+ GCDAsyncSpecialPacket *tlsPacket = (GCDAsyncSpecialPacket *)currentRead;
+ CFDictionaryRef tlsSettings = (__bridge CFDictionaryRef)tlsPacket->tlsSettings;
+
+ // Getting an error concerning kCFStreamPropertySSLSettings ?
+ // You need to add the CFNetwork framework to your iOS application.
+
+ BOOL r1 = CFReadStreamSetProperty(readStream, kCFStreamPropertySSLSettings, tlsSettings);
+ BOOL r2 = CFWriteStreamSetProperty(writeStream, kCFStreamPropertySSLSettings, tlsSettings);
+
+ // For some reason, starting around the time of iOS 4.3,
+ // the first call to set the kCFStreamPropertySSLSettings will return true,
+ // but the second will return false.
+ //
+ // Order doesn't seem to matter.
+ // So you could call CFReadStreamSetProperty and then CFWriteStreamSetProperty, or you could reverse the order.
+ // Either way, the first call will return true, and the second returns false.
+ //
+ // Interestingly, this doesn't seem to affect anything.
+ // Which is not altogether unusual, as the documentation seems to suggest that (for many settings)
+ // setting it on one side of the stream automatically sets it for the other side of the stream.
+ //
+ // Although there isn't anything in the documentation to suggest that the second attempt would fail.
+ //
+ // Furthermore, this only seems to affect streams that are negotiating a security upgrade.
+ // In other words, the socket gets connected, there is some back-and-forth communication over the unsecure
+ // connection, and then a startTLS is issued.
+ // So this mostly affects newer protocols (XMPP, IMAP) as opposed to older protocols (HTTPS).
+
+ if (!r1 && !r2) // Yes, the && is correct - workaround for apple bug.
+ {
+ [self closeWithError:[self otherError:@"Error in CFStreamSetProperty"]];
+ return;
+ }
+
+ if (![self openStreams])
+ {
+ [self closeWithError:[self otherError:@"Error in CFStreamOpen"]];
+ return;
+ }
+
+ LogVerbose(@"Waiting for SSL Handshake to complete...");
+}
+
+#endif
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark CFStream
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#if TARGET_OS_IPHONE
+
++ (void)ignore:(id)_
+{}
+
++ (void)startCFStreamThreadIfNeeded
+{
+ LogTrace();
+
+ static dispatch_once_t predicate;
+ dispatch_once(&predicate, ^{
+
+ cfstreamThreadRetainCount = 0;
+ cfstreamThreadSetupQueue = dispatch_queue_create("GCDAsyncSocket-CFStreamThreadSetup", DISPATCH_QUEUE_SERIAL);
+ });
+
+ dispatch_sync(cfstreamThreadSetupQueue, ^{ @autoreleasepool {
+
+ if (++cfstreamThreadRetainCount == 1)
+ {
+ cfstreamThread = [[NSThread alloc] initWithTarget:self
+ selector:@selector(cfstreamThread)
+ object:nil];
+ [cfstreamThread start];
+ }
+ }});
+}
+
++ (void)stopCFStreamThreadIfNeeded
+{
+ LogTrace();
+
+ // The creation of the cfstreamThread is relatively expensive.
+ // So we'd like to keep it available for recycling.
+ // However, there's a tradeoff here, because it shouldn't remain alive forever.
+ // So what we're going to do is use a little delay before taking it down.
+ // This way it can be reused properly in situations where multiple sockets are continually in flux.
+
+ int delayInSeconds = 30;
+ dispatch_time_t when = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(delayInSeconds * NSEC_PER_SEC));
+ dispatch_after(when, cfstreamThreadSetupQueue, ^{ @autoreleasepool {
+ #pragma clang diagnostic push
+ #pragma clang diagnostic warning "-Wimplicit-retain-self"
+
+ if (cfstreamThreadRetainCount == 0)
+ {
+ LogWarn(@"Logic error concerning cfstreamThread start / stop");
+ return_from_block;
+ }
+
+ if (--cfstreamThreadRetainCount == 0)
+ {
+ [cfstreamThread cancel]; // set isCancelled flag
+
+ // wake up the thread
+ [[self class] performSelector:@selector(ignore:)
+ onThread:cfstreamThread
+ withObject:[NSNull null]
+ waitUntilDone:NO];
+
+ cfstreamThread = nil;
+ }
+
+ #pragma clang diagnostic pop
+ }});
+}
+
++ (void)cfstreamThread { @autoreleasepool
+{
+ [[NSThread currentThread] setName:GCDAsyncSocketThreadName];
+
+ LogInfo(@"CFStreamThread: Started");
+
+ // We can't run the run loop unless it has an associated input source or a timer.
+ // So we'll just create a timer that will never fire - unless the server runs for decades.
+ [NSTimer scheduledTimerWithTimeInterval:[[NSDate distantFuture] timeIntervalSinceNow]
+ target:self
+ selector:@selector(ignore:)
+ userInfo:nil
+ repeats:YES];
+
+ NSThread *currentThread = [NSThread currentThread];
+ NSRunLoop *currentRunLoop = [NSRunLoop currentRunLoop];
+
+ BOOL isCancelled = [currentThread isCancelled];
+
+ while (!isCancelled && [currentRunLoop runMode:NSDefaultRunLoopMode beforeDate:[NSDate distantFuture]])
+ {
+ isCancelled = [currentThread isCancelled];
+ }
+
+ LogInfo(@"CFStreamThread: Stopped");
+}}
+
++ (void)scheduleCFStreams:(GCDAsyncSocket *)asyncSocket
+{
+ LogTrace();
+ NSAssert([NSThread currentThread] == cfstreamThread, @"Invoked on wrong thread");
+
+ CFRunLoopRef runLoop = CFRunLoopGetCurrent();
+
+ if (asyncSocket->readStream)
+ CFReadStreamScheduleWithRunLoop(asyncSocket->readStream, runLoop, kCFRunLoopDefaultMode);
+
+ if (asyncSocket->writeStream)
+ CFWriteStreamScheduleWithRunLoop(asyncSocket->writeStream, runLoop, kCFRunLoopDefaultMode);
+}
+
++ (void)unscheduleCFStreams:(GCDAsyncSocket *)asyncSocket
+{
+ LogTrace();
+ NSAssert([NSThread currentThread] == cfstreamThread, @"Invoked on wrong thread");
+
+ CFRunLoopRef runLoop = CFRunLoopGetCurrent();
+
+ if (asyncSocket->readStream)
+ CFReadStreamUnscheduleFromRunLoop(asyncSocket->readStream, runLoop, kCFRunLoopDefaultMode);
+
+ if (asyncSocket->writeStream)
+ CFWriteStreamUnscheduleFromRunLoop(asyncSocket->writeStream, runLoop, kCFRunLoopDefaultMode);
+}
+
+static void CFReadStreamCallback (CFReadStreamRef stream, CFStreamEventType type, void *pInfo)
+{
+ GCDAsyncSocket *asyncSocket = (__bridge GCDAsyncSocket *)pInfo;
+
+ switch(type)
+ {
+ case kCFStreamEventHasBytesAvailable:
+ {
+ dispatch_async(asyncSocket->socketQueue, ^{ @autoreleasepool {
+
+ LogCVerbose(@"CFReadStreamCallback - HasBytesAvailable");
+
+ if (asyncSocket->readStream != stream)
+ return_from_block;
+
+ if ((asyncSocket->flags & kStartingReadTLS) && (asyncSocket->flags & kStartingWriteTLS))
+ {
+ // If we set kCFStreamPropertySSLSettings before we opened the streams, this might be a lie.
+ // (A callback related to the tcp stream, but not to the SSL layer).
+
+ if (CFReadStreamHasBytesAvailable(asyncSocket->readStream))
+ {
+ asyncSocket->flags |= kSecureSocketHasBytesAvailable;
+ [asyncSocket cf_finishSSLHandshake];
+ }
+ }
+ else
+ {
+ asyncSocket->flags |= kSecureSocketHasBytesAvailable;
+ [asyncSocket doReadData];
+ }
+ }});
+
+ break;
+ }
+ default:
+ {
+ NSError *error = (__bridge_transfer NSError *)CFReadStreamCopyError(stream);
+
+ if (error == nil && type == kCFStreamEventEndEncountered)
+ {
+ error = [asyncSocket connectionClosedError];
+ }
+
+ dispatch_async(asyncSocket->socketQueue, ^{ @autoreleasepool {
+
+ LogCVerbose(@"CFReadStreamCallback - Other");
+
+ if (asyncSocket->readStream != stream)
+ return_from_block;
+
+ if ((asyncSocket->flags & kStartingReadTLS) && (asyncSocket->flags & kStartingWriteTLS))
+ {
+ [asyncSocket cf_abortSSLHandshake:error];
+ }
+ else
+ {
+ [asyncSocket closeWithError:error];
+ }
+ }});
+
+ break;
+ }
+ }
+
+}
+
+static void CFWriteStreamCallback (CFWriteStreamRef stream, CFStreamEventType type, void *pInfo)
+{
+ GCDAsyncSocket *asyncSocket = (__bridge GCDAsyncSocket *)pInfo;
+
+ switch(type)
+ {
+ case kCFStreamEventCanAcceptBytes:
+ {
+ dispatch_async(asyncSocket->socketQueue, ^{ @autoreleasepool {
+
+ LogCVerbose(@"CFWriteStreamCallback - CanAcceptBytes");
+
+ if (asyncSocket->writeStream != stream)
+ return_from_block;
+
+ if ((asyncSocket->flags & kStartingReadTLS) && (asyncSocket->flags & kStartingWriteTLS))
+ {
+ // If we set kCFStreamPropertySSLSettings before we opened the streams, this might be a lie.
+ // (A callback related to the tcp stream, but not to the SSL layer).
+
+ if (CFWriteStreamCanAcceptBytes(asyncSocket->writeStream))
+ {
+ asyncSocket->flags |= kSocketCanAcceptBytes;
+ [asyncSocket cf_finishSSLHandshake];
+ }
+ }
+ else
+ {
+ asyncSocket->flags |= kSocketCanAcceptBytes;
+ [asyncSocket doWriteData];
+ }
+ }});
+
+ break;
+ }
+ default:
+ {
+ NSError *error = (__bridge_transfer NSError *)CFWriteStreamCopyError(stream);
+
+ if (error == nil && type == kCFStreamEventEndEncountered)
+ {
+ error = [asyncSocket connectionClosedError];
+ }
+
+ dispatch_async(asyncSocket->socketQueue, ^{ @autoreleasepool {
+
+ LogCVerbose(@"CFWriteStreamCallback - Other");
+
+ if (asyncSocket->writeStream != stream)
+ return_from_block;
+
+ if ((asyncSocket->flags & kStartingReadTLS) && (asyncSocket->flags & kStartingWriteTLS))
+ {
+ [asyncSocket cf_abortSSLHandshake:error];
+ }
+ else
+ {
+ [asyncSocket closeWithError:error];
+ }
+ }});
+
+ break;
+ }
+ }
+
+}
+
+- (BOOL)createReadAndWriteStream
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+
+ if (readStream || writeStream)
+ {
+ // Streams already created
+ return YES;
+ }
+
+ int socketFD = (socket4FD != SOCKET_NULL) ? socket4FD : (socket6FD != SOCKET_NULL) ? socket6FD : socketUN;
+
+ if (socketFD == SOCKET_NULL)
+ {
+ // Cannot create streams without a file descriptor
+ return NO;
+ }
+
+ if (![self isConnected])
+ {
+ // Cannot create streams until file descriptor is connected
+ return NO;
+ }
+
+ LogVerbose(@"Creating read and write stream...");
+
+ CFStreamCreatePairWithSocket(NULL, (CFSocketNativeHandle)socketFD, &readStream, &writeStream);
+
+ // The kCFStreamPropertyShouldCloseNativeSocket property should be false by default (for our case).
+ // But let's not take any chances.
+
+ if (readStream)
+ CFReadStreamSetProperty(readStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanFalse);
+ if (writeStream)
+ CFWriteStreamSetProperty(writeStream, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanFalse);
+
+ if ((readStream == NULL) || (writeStream == NULL))
+ {
+ LogWarn(@"Unable to create read and write stream...");
+
+ if (readStream)
+ {
+ CFReadStreamClose(readStream);
+ CFRelease(readStream);
+ readStream = NULL;
+ }
+ if (writeStream)
+ {
+ CFWriteStreamClose(writeStream);
+ CFRelease(writeStream);
+ writeStream = NULL;
+ }
+
+ return NO;
+ }
+
+ return YES;
+}
+
+- (BOOL)registerForStreamCallbacksIncludingReadWrite:(BOOL)includeReadWrite
+{
+ LogVerbose(@"%@ %@", THIS_METHOD, (includeReadWrite ? @"YES" : @"NO"));
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert((readStream != NULL && writeStream != NULL), @"Read/Write stream is null");
+
+ streamContext.version = 0;
+ streamContext.info = (__bridge void *)(self);
+ streamContext.retain = nil;
+ streamContext.release = nil;
+ streamContext.copyDescription = nil;
+
+ CFOptionFlags readStreamEvents = kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered;
+ if (includeReadWrite)
+ readStreamEvents |= kCFStreamEventHasBytesAvailable;
+
+ if (!CFReadStreamSetClient(readStream, readStreamEvents, &CFReadStreamCallback, &streamContext))
+ {
+ return NO;
+ }
+
+ CFOptionFlags writeStreamEvents = kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered;
+ if (includeReadWrite)
+ writeStreamEvents |= kCFStreamEventCanAcceptBytes;
+
+ if (!CFWriteStreamSetClient(writeStream, writeStreamEvents, &CFWriteStreamCallback, &streamContext))
+ {
+ return NO;
+ }
+
+ return YES;
+}
+
+- (BOOL)addStreamsToRunLoop
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert((readStream != NULL && writeStream != NULL), @"Read/Write stream is null");
+
+ if (!(flags & kAddedStreamsToRunLoop))
+ {
+ LogVerbose(@"Adding streams to runloop...");
+
+ [[self class] startCFStreamThreadIfNeeded];
+ [[self class] performSelector:@selector(scheduleCFStreams:)
+ onThread:cfstreamThread
+ withObject:self
+ waitUntilDone:YES];
+
+ flags |= kAddedStreamsToRunLoop;
+ }
+
+ return YES;
+}
+
+- (void)removeStreamsFromRunLoop
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert((readStream != NULL && writeStream != NULL), @"Read/Write stream is null");
+
+ if (flags & kAddedStreamsToRunLoop)
+ {
+ LogVerbose(@"Removing streams from runloop...");
+
+ [[self class] performSelector:@selector(unscheduleCFStreams:)
+ onThread:cfstreamThread
+ withObject:self
+ waitUntilDone:YES];
+ [[self class] stopCFStreamThreadIfNeeded];
+
+ flags &= ~kAddedStreamsToRunLoop;
+ }
+}
+
+- (BOOL)openStreams
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert((readStream != NULL && writeStream != NULL), @"Read/Write stream is null");
+
+ CFStreamStatus readStatus = CFReadStreamGetStatus(readStream);
+ CFStreamStatus writeStatus = CFWriteStreamGetStatus(writeStream);
+
+ if ((readStatus == kCFStreamStatusNotOpen) || (writeStatus == kCFStreamStatusNotOpen))
+ {
+ LogVerbose(@"Opening read and write stream...");
+
+ BOOL r1 = CFReadStreamOpen(readStream);
+ BOOL r2 = CFWriteStreamOpen(writeStream);
+
+ if (!r1 || !r2)
+ {
+ LogError(@"Error in CFStreamOpen");
+ return NO;
+ }
+ }
+
+ return YES;
+}
+
+#endif
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Advanced
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * See header file for big discussion of this method.
+**/
+- (BOOL)autoDisconnectOnClosedReadStream
+{
+ // Note: YES means kAllowHalfDuplexConnection is OFF
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return ((config & kAllowHalfDuplexConnection) == 0);
+ }
+ else
+ {
+ __block BOOL result;
+
+ dispatch_sync(socketQueue, ^{
+ result = ((config & kAllowHalfDuplexConnection) == 0);
+ });
+
+ return result;
+ }
+}
+
+/**
+ * See header file for big discussion of this method.
+**/
+- (void)setAutoDisconnectOnClosedReadStream:(BOOL)flag
+{
+ // Note: YES means kAllowHalfDuplexConnection is OFF
+
+ dispatch_block_t block = ^{
+
+ if (flag)
+ config &= ~kAllowHalfDuplexConnection;
+ else
+ config |= kAllowHalfDuplexConnection;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+
+/**
+ * See header file for big discussion of this method.
+**/
+- (void)markSocketQueueTargetQueue:(dispatch_queue_t)socketNewTargetQueue
+{
+ void *nonNullUnusedPointer = (__bridge void *)self;
+ dispatch_queue_set_specific(socketNewTargetQueue, IsOnSocketQueueOrTargetQueueKey, nonNullUnusedPointer, NULL);
+}
+
+/**
+ * See header file for big discussion of this method.
+**/
+- (void)unmarkSocketQueueTargetQueue:(dispatch_queue_t)socketOldTargetQueue
+{
+ dispatch_queue_set_specific(socketOldTargetQueue, IsOnSocketQueueOrTargetQueueKey, NULL, NULL);
+}
+
+/**
+ * See header file for big discussion of this method.
+**/
+- (void)performBlock:(dispatch_block_t)block
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+}
+
+/**
+ * Questions? Have you read the header file?
+**/
+- (int)socketFD
+{
+ if (!dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@ - Method only available from within the context of a performBlock: invocation", THIS_METHOD);
+ return SOCKET_NULL;
+ }
+
+ if (socket4FD != SOCKET_NULL)
+ return socket4FD;
+ else
+ return socket6FD;
+}
+
+/**
+ * Questions? Have you read the header file?
+**/
+- (int)socket4FD
+{
+ if (!dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@ - Method only available from within the context of a performBlock: invocation", THIS_METHOD);
+ return SOCKET_NULL;
+ }
+
+ return socket4FD;
+}
+
+/**
+ * Questions? Have you read the header file?
+**/
+- (int)socket6FD
+{
+ if (!dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@ - Method only available from within the context of a performBlock: invocation", THIS_METHOD);
+ return SOCKET_NULL;
+ }
+
+ return socket6FD;
+}
+
+#if TARGET_OS_IPHONE
+
+/**
+ * Questions? Have you read the header file?
+**/
+- (CFReadStreamRef)readStream
+{
+ if (!dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@ - Method only available from within the context of a performBlock: invocation", THIS_METHOD);
+ return NULL;
+ }
+
+ if (readStream == NULL)
+ [self createReadAndWriteStream];
+
+ return readStream;
+}
+
+/**
+ * Questions? Have you read the header file?
+**/
+- (CFWriteStreamRef)writeStream
+{
+ if (!dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@ - Method only available from within the context of a performBlock: invocation", THIS_METHOD);
+ return NULL;
+ }
+
+ if (writeStream == NULL)
+ [self createReadAndWriteStream];
+
+ return writeStream;
+}
+
+- (BOOL)enableBackgroundingOnSocketWithCaveat:(BOOL)caveat
+{
+ if (![self createReadAndWriteStream])
+ {
+ // Error occurred creating streams (perhaps socket isn't open)
+ return NO;
+ }
+
+ BOOL r1, r2;
+
+ LogVerbose(@"Enabling backgrouding on socket");
+
+ r1 = CFReadStreamSetProperty(readStream, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+ r2 = CFWriteStreamSetProperty(writeStream, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+
+ if (!r1 || !r2)
+ {
+ return NO;
+ }
+
+ if (!caveat)
+ {
+ if (![self openStreams])
+ {
+ return NO;
+ }
+ }
+
+ return YES;
+}
+
+/**
+ * Questions? Have you read the header file?
+**/
+- (BOOL)enableBackgroundingOnSocket
+{
+ LogTrace();
+
+ if (!dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@ - Method only available from within the context of a performBlock: invocation", THIS_METHOD);
+ return NO;
+ }
+
+ return [self enableBackgroundingOnSocketWithCaveat:NO];
+}
+
+- (BOOL)enableBackgroundingOnSocketWithCaveat // Deprecated in iOS 4.???
+{
+ // This method was created as a workaround for a bug in iOS.
+ // Apple has since fixed this bug.
+ // I'm not entirely sure which version of iOS they fixed it in...
+
+ LogTrace();
+
+ if (!dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@ - Method only available from within the context of a performBlock: invocation", THIS_METHOD);
+ return NO;
+ }
+
+ return [self enableBackgroundingOnSocketWithCaveat:YES];
+}
+
+#endif
+
+- (SSLContextRef)sslContext
+{
+ if (!dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@ - Method only available from within the context of a performBlock: invocation", THIS_METHOD);
+ return NULL;
+ }
+
+ return sslContext;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Class Utilities
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
++ (NSMutableArray *)lookupHost:(NSString *)host port:(uint16_t)port error:(NSError **)errPtr
+{
+ LogTrace();
+
+ NSMutableArray *addresses = nil;
+ NSError *error = nil;
+
+ if ([host isEqualToString:@"localhost"] || [host isEqualToString:@"loopback"])
+ {
+ // Use LOOPBACK address
+ struct sockaddr_in nativeAddr4;
+ nativeAddr4.sin_len = sizeof(struct sockaddr_in);
+ nativeAddr4.sin_family = AF_INET;
+ nativeAddr4.sin_port = htons(port);
+ nativeAddr4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+ memset(&(nativeAddr4.sin_zero), 0, sizeof(nativeAddr4.sin_zero));
+
+ struct sockaddr_in6 nativeAddr6;
+ nativeAddr6.sin6_len = sizeof(struct sockaddr_in6);
+ nativeAddr6.sin6_family = AF_INET6;
+ nativeAddr6.sin6_port = htons(port);
+ nativeAddr6.sin6_flowinfo = 0;
+ nativeAddr6.sin6_addr = in6addr_loopback;
+ nativeAddr6.sin6_scope_id = 0;
+
+ // Wrap the native address structures
+
+ NSData *address4 = [NSData dataWithBytes:&nativeAddr4 length:sizeof(nativeAddr4)];
+ NSData *address6 = [NSData dataWithBytes:&nativeAddr6 length:sizeof(nativeAddr6)];
+
+ addresses = [NSMutableArray arrayWithCapacity:2];
+ [addresses addObject:address4];
+ [addresses addObject:address6];
+ }
+ else
+ {
+ NSString *portStr = [NSString stringWithFormat:@"%hu", port];
+
+ struct addrinfo hints, *res, *res0;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_STREAM;
+ hints.ai_protocol = IPPROTO_TCP;
+
+ int gai_error = getaddrinfo([host UTF8String], [portStr UTF8String], &hints, &res0);
+
+ if (gai_error)
+ {
+ error = [self gaiError:gai_error];
+ }
+ else
+ {
+ NSUInteger capacity = 0;
+ for (res = res0; res; res = res->ai_next)
+ {
+ if (res->ai_family == AF_INET || res->ai_family == AF_INET6) {
+ capacity++;
+ }
+ }
+
+ addresses = [NSMutableArray arrayWithCapacity:capacity];
+
+ for (res = res0; res; res = res->ai_next)
+ {
+ if (res->ai_family == AF_INET)
+ {
+ // Found IPv4 address.
+ // Wrap the native address structure, and add to results.
+
+ NSData *address4 = [NSData dataWithBytes:res->ai_addr length:res->ai_addrlen];
+ [addresses addObject:address4];
+ }
+ else if (res->ai_family == AF_INET6)
+ {
+ // Fixes connection issues with IPv6
+ // https://github.com/robbiehanson/CocoaAsyncSocket/issues/429#issuecomment-222477158
+
+ // Found IPv6 address.
+ // Wrap the native address structure, and add to results.
+
+ struct sockaddr_in6 *sockaddr = (struct sockaddr_in6 *)res->ai_addr;
+ in_port_t *portPtr = &sockaddr->sin6_port;
+ if ((portPtr != NULL) && (*portPtr == 0)) {
+ *portPtr = htons(port);
+ }
+
+ NSData *address6 = [NSData dataWithBytes:res->ai_addr length:res->ai_addrlen];
+ [addresses addObject:address6];
+ }
+ }
+ freeaddrinfo(res0);
+
+ if ([addresses count] == 0)
+ {
+ error = [self gaiError:EAI_FAIL];
+ }
+ }
+ }
+
+ if (errPtr) *errPtr = error;
+ return addresses;
+}
+
++ (NSString *)hostFromSockaddr4:(const struct sockaddr_in *)pSockaddr4
+{
+ char addrBuf[INET_ADDRSTRLEN];
+
+ if (inet_ntop(AF_INET, &pSockaddr4->sin_addr, addrBuf, (socklen_t)sizeof(addrBuf)) == NULL)
+ {
+ addrBuf[0] = '\0';
+ }
+
+ return [NSString stringWithCString:addrBuf encoding:NSASCIIStringEncoding];
+}
+
++ (NSString *)hostFromSockaddr6:(const struct sockaddr_in6 *)pSockaddr6
+{
+ char addrBuf[INET6_ADDRSTRLEN];
+
+ if (inet_ntop(AF_INET6, &pSockaddr6->sin6_addr, addrBuf, (socklen_t)sizeof(addrBuf)) == NULL)
+ {
+ addrBuf[0] = '\0';
+ }
+
+ return [NSString stringWithCString:addrBuf encoding:NSASCIIStringEncoding];
+}
+
++ (uint16_t)portFromSockaddr4:(const struct sockaddr_in *)pSockaddr4
+{
+ return ntohs(pSockaddr4->sin_port);
+}
+
++ (uint16_t)portFromSockaddr6:(const struct sockaddr_in6 *)pSockaddr6
+{
+ return ntohs(pSockaddr6->sin6_port);
+}
+
++ (NSURL *)urlFromSockaddrUN:(const struct sockaddr_un *)pSockaddr
+{
+ NSString *path = [NSString stringWithUTF8String:pSockaddr->sun_path];
+ return [NSURL fileURLWithPath:path];
+}
+
++ (NSString *)hostFromAddress:(NSData *)address
+{
+ NSString *host;
+
+ if ([self getHost:&host port:NULL fromAddress:address])
+ return host;
+ else
+ return nil;
+}
+
++ (uint16_t)portFromAddress:(NSData *)address
+{
+ uint16_t port;
+
+ if ([self getHost:NULL port:&port fromAddress:address])
+ return port;
+ else
+ return 0;
+}
+
++ (BOOL)isIPv4Address:(NSData *)address
+{
+ if ([address length] >= sizeof(struct sockaddr))
+ {
+ const struct sockaddr *sockaddrX = [address bytes];
+
+ if (sockaddrX->sa_family == AF_INET) {
+ return YES;
+ }
+ }
+
+ return NO;
+}
+
++ (BOOL)isIPv6Address:(NSData *)address
+{
+ if ([address length] >= sizeof(struct sockaddr))
+ {
+ const struct sockaddr *sockaddrX = [address bytes];
+
+ if (sockaddrX->sa_family == AF_INET6) {
+ return YES;
+ }
+ }
+
+ return NO;
+}
+
++ (BOOL)getHost:(NSString **)hostPtr port:(uint16_t *)portPtr fromAddress:(NSData *)address
+{
+ return [self getHost:hostPtr port:portPtr family:NULL fromAddress:address];
+}
+
++ (BOOL)getHost:(NSString **)hostPtr port:(uint16_t *)portPtr family:(sa_family_t *)afPtr fromAddress:(NSData *)address
+{
+ if ([address length] >= sizeof(struct sockaddr))
+ {
+ const struct sockaddr *sockaddrX = [address bytes];
+
+ if (sockaddrX->sa_family == AF_INET)
+ {
+ if ([address length] >= sizeof(struct sockaddr_in))
+ {
+ struct sockaddr_in sockaddr4;
+ memcpy(&sockaddr4, sockaddrX, sizeof(sockaddr4));
+
+ if (hostPtr) *hostPtr = [self hostFromSockaddr4:&sockaddr4];
+ if (portPtr) *portPtr = [self portFromSockaddr4:&sockaddr4];
+ if (afPtr) *afPtr = AF_INET;
+
+ return YES;
+ }
+ }
+ else if (sockaddrX->sa_family == AF_INET6)
+ {
+ if ([address length] >= sizeof(struct sockaddr_in6))
+ {
+ struct sockaddr_in6 sockaddr6;
+ memcpy(&sockaddr6, sockaddrX, sizeof(sockaddr6));
+
+ if (hostPtr) *hostPtr = [self hostFromSockaddr6:&sockaddr6];
+ if (portPtr) *portPtr = [self portFromSockaddr6:&sockaddr6];
+ if (afPtr) *afPtr = AF_INET6;
+
+ return YES;
+ }
+ }
+ }
+
+ return NO;
+}
+
++ (NSData *)CRLFData
+{
+ return [NSData dataWithBytes:"\x0D\x0A" length:2];
+}
+
++ (NSData *)CRData
+{
+ return [NSData dataWithBytes:"\x0D" length:1];
+}
+
++ (NSData *)LFData
+{
+ return [NSData dataWithBytes:"\x0A" length:1];
+}
+
++ (NSData *)ZeroData
+{
+ return [NSData dataWithBytes:"" length:1];
+}
+
+@end
diff --git a/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncUdpSocket.h b/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncUdpSocket.h
new file mode 100755
index 0000000..05dfd78
--- /dev/null
+++ b/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncUdpSocket.h
@@ -0,0 +1,1009 @@
+//
+// GCDAsyncUdpSocket
+//
+// This class is in the public domain.
+// Originally created by Robbie Hanson of Deusty LLC.
+// Updated and maintained by Deusty LLC and the Apple development community.
+//
+// https://github.com/robbiehanson/CocoaAsyncSocket
+//
+
+#import <Foundation/Foundation.h>
+#import <dispatch/dispatch.h>
+#import <TargetConditionals.h>
+#import <Availability.h>
+
+NS_ASSUME_NONNULL_BEGIN
+extern NSString *const GCDAsyncUdpSocketException;
+extern NSString *const GCDAsyncUdpSocketErrorDomain;
+
+extern NSString *const GCDAsyncUdpSocketQueueName;
+extern NSString *const GCDAsyncUdpSocketThreadName;
+
+typedef NS_ENUM(NSInteger, GCDAsyncUdpSocketError) {
+ GCDAsyncUdpSocketNoError = 0, // Never used
+ GCDAsyncUdpSocketBadConfigError, // Invalid configuration
+ GCDAsyncUdpSocketBadParamError, // Invalid parameter was passed
+ GCDAsyncUdpSocketSendTimeoutError, // A send operation timed out
+ GCDAsyncUdpSocketClosedError, // The socket was closed
+ GCDAsyncUdpSocketOtherError, // Description provided in userInfo
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+@class GCDAsyncUdpSocket;
+
+@protocol GCDAsyncUdpSocketDelegate <NSObject>
+@optional
+
+/**
+ * By design, UDP is a connectionless protocol, and connecting is not needed.
+ * However, you may optionally choose to connect to a particular host for reasons
+ * outlined in the documentation for the various connect methods listed above.
+ *
+ * This method is called if one of the connect methods are invoked, and the connection is successful.
+**/
+- (void)udpSocket:(GCDAsyncUdpSocket *)sock didConnectToAddress:(NSData *)address;
+
+/**
+ * By design, UDP is a connectionless protocol, and connecting is not needed.
+ * However, you may optionally choose to connect to a particular host for reasons
+ * outlined in the documentation for the various connect methods listed above.
+ *
+ * This method is called if one of the connect methods are invoked, and the connection fails.
+ * This may happen, for example, if a domain name is given for the host and the domain name is unable to be resolved.
+**/
+- (void)udpSocket:(GCDAsyncUdpSocket *)sock didNotConnect:(NSError *)error;
+
+/**
+ * Called when the datagram with the given tag has been sent.
+**/
+- (void)udpSocket:(GCDAsyncUdpSocket *)sock didSendDataWithTag:(long)tag;
+
+/**
+ * Called if an error occurs while trying to send a datagram.
+ * This could be due to a timeout, or something more serious such as the data being too large to fit in a sigle packet.
+**/
+- (void)udpSocket:(GCDAsyncUdpSocket *)sock didNotSendDataWithTag:(long)tag dueToError:(NSError *)error;
+
+/**
+ * Called when the socket has received the requested datagram.
+**/
+- (void)udpSocket:(GCDAsyncUdpSocket *)sock didReceiveData:(NSData *)data
+ fromAddress:(NSData *)address
+ withFilterContext:(nullable id)filterContext;
+
+/**
+ * Called when the socket is closed.
+**/
+- (void)udpSocketDidClose:(GCDAsyncUdpSocket *)sock withError:(NSError *)error;
+
+@end
+
+/**
+ * You may optionally set a receive filter for the socket.
+ * A filter can provide several useful features:
+ *
+ * 1. Many times udp packets need to be parsed.
+ * Since the filter can run in its own independent queue, you can parallelize this parsing quite easily.
+ * The end result is a parallel socket io, datagram parsing, and packet processing.
+ *
+ * 2. Many times udp packets are discarded because they are duplicate/unneeded/unsolicited.
+ * The filter can prevent such packets from arriving at the delegate.
+ * And because the filter can run in its own independent queue, this doesn't slow down the delegate.
+ *
+ * - Since the udp protocol does not guarantee delivery, udp packets may be lost.
+ * Many protocols built atop udp thus provide various resend/re-request algorithms.
+ * This sometimes results in duplicate packets arriving.
+ * A filter may allow you to architect the duplicate detection code to run in parallel to normal processing.
+ *
+ * - Since the udp socket may be connectionless, its possible for unsolicited packets to arrive.
+ * Such packets need to be ignored.
+ *
+ * 3. Sometimes traffic shapers are needed to simulate real world environments.
+ * A filter allows you to write custom code to simulate such environments.
+ * The ability to code this yourself is especially helpful when your simulated environment
+ * is more complicated than simple traffic shaping (e.g. simulating a cone port restricted router),
+ * or the system tools to handle this aren't available (e.g. on a mobile device).
+ *
+ * @param data - The packet that was received.
+ * @param address - The address the data was received from.
+ * See utilities section for methods to extract info from address.
+ * @param context - Out parameter you may optionally set, which will then be passed to the delegate method.
+ * For example, filter block can parse the data and then,
+ * pass the parsed data to the delegate.
+ *
+ * @returns - YES if the received packet should be passed onto the delegate.
+ * NO if the received packet should be discarded, and not reported to the delegete.
+ *
+ * Example:
+ *
+ * GCDAsyncUdpSocketReceiveFilterBlock filter = ^BOOL (NSData *data, NSData *address, id *context) {
+ *
+ * MyProtocolMessage *msg = [MyProtocol parseMessage:data];
+ *
+ * *context = response;
+ * return (response != nil);
+ * };
+ * [udpSocket setReceiveFilter:filter withQueue:myParsingQueue];
+ *
+**/
+typedef BOOL (^GCDAsyncUdpSocketReceiveFilterBlock)(NSData *data, NSData *address, id __nullable * __nonnull context);
+
+/**
+ * You may optionally set a send filter for the socket.
+ * A filter can provide several interesting possibilities:
+ *
+ * 1. Optional caching of resolved addresses for domain names.
+ * The cache could later be consulted, resulting in fewer system calls to getaddrinfo.
+ *
+ * 2. Reusable modules of code for bandwidth monitoring.
+ *
+ * 3. Sometimes traffic shapers are needed to simulate real world environments.
+ * A filter allows you to write custom code to simulate such environments.
+ * The ability to code this yourself is especially helpful when your simulated environment
+ * is more complicated than simple traffic shaping (e.g. simulating a cone port restricted router),
+ * or the system tools to handle this aren't available (e.g. on a mobile device).
+ *
+ * @param data - The packet that was received.
+ * @param address - The address the data was received from.
+ * See utilities section for methods to extract info from address.
+ * @param tag - The tag that was passed in the send method.
+ *
+ * @returns - YES if the packet should actually be sent over the socket.
+ * NO if the packet should be silently dropped (not sent over the socket).
+ *
+ * Regardless of the return value, the delegate will be informed that the packet was successfully sent.
+ *
+**/
+typedef BOOL (^GCDAsyncUdpSocketSendFilterBlock)(NSData *data, NSData *address, long tag);
+
+
+@interface GCDAsyncUdpSocket : NSObject
+
+/**
+ * GCDAsyncUdpSocket uses the standard delegate paradigm,
+ * but executes all delegate callbacks on a given delegate dispatch queue.
+ * This allows for maximum concurrency, while at the same time providing easy thread safety.
+ *
+ * You MUST set a delegate AND delegate dispatch queue before attempting to
+ * use the socket, or you will get an error.
+ *
+ * The socket queue is optional.
+ * If you pass NULL, GCDAsyncSocket will automatically create its own socket queue.
+ * If you choose to provide a socket queue, the socket queue must not be a concurrent queue,
+ * then please see the discussion for the method markSocketQueueTargetQueue.
+ *
+ * The delegate queue and socket queue can optionally be the same.
+**/
+- (instancetype)init;
+- (instancetype)initWithSocketQueue:(nullable dispatch_queue_t)sq;
+- (instancetype)initWithDelegate:(nullable id <GCDAsyncUdpSocketDelegate>)aDelegate delegateQueue:(nullable dispatch_queue_t)dq;
+- (instancetype)initWithDelegate:(nullable id <GCDAsyncUdpSocketDelegate>)aDelegate delegateQueue:(nullable dispatch_queue_t)dq socketQueue:(nullable dispatch_queue_t)sq;
+
+#pragma mark Configuration
+
+- (nullable id <GCDAsyncUdpSocketDelegate>)delegate;
+- (void)setDelegate:(nullable id <GCDAsyncUdpSocketDelegate>)delegate;
+- (void)synchronouslySetDelegate:(nullable id <GCDAsyncUdpSocketDelegate>)delegate;
+
+- (nullable dispatch_queue_t)delegateQueue;
+- (void)setDelegateQueue:(nullable dispatch_queue_t)delegateQueue;
+- (void)synchronouslySetDelegateQueue:(nullable dispatch_queue_t)delegateQueue;
+
+- (void)getDelegate:(id <GCDAsyncUdpSocketDelegate> __nullable * __nullable)delegatePtr delegateQueue:(dispatch_queue_t __nullable * __nullable)delegateQueuePtr;
+- (void)setDelegate:(nullable id <GCDAsyncUdpSocketDelegate>)delegate delegateQueue:(nullable dispatch_queue_t)delegateQueue;
+- (void)synchronouslySetDelegate:(nullable id <GCDAsyncUdpSocketDelegate>)delegate delegateQueue:(nullable dispatch_queue_t)delegateQueue;
+
+/**
+ * By default, both IPv4 and IPv6 are enabled.
+ *
+ * This means GCDAsyncUdpSocket automatically supports both protocols,
+ * and can send to IPv4 or IPv6 addresses,
+ * as well as receive over IPv4 and IPv6.
+ *
+ * For operations that require DNS resolution, GCDAsyncUdpSocket supports both IPv4 and IPv6.
+ * If a DNS lookup returns only IPv4 results, GCDAsyncUdpSocket will automatically use IPv4.
+ * If a DNS lookup returns only IPv6 results, GCDAsyncUdpSocket will automatically use IPv6.
+ * If a DNS lookup returns both IPv4 and IPv6 results, then the protocol used depends on the configured preference.
+ * If IPv4 is preferred, then IPv4 is used.
+ * If IPv6 is preferred, then IPv6 is used.
+ * If neutral, then the first IP version in the resolved array will be used.
+ *
+ * Starting with Mac OS X 10.7 Lion and iOS 5, the default IP preference is neutral.
+ * On prior systems the default IP preference is IPv4.
+ **/
+- (BOOL)isIPv4Enabled;
+- (void)setIPv4Enabled:(BOOL)flag;
+
+- (BOOL)isIPv6Enabled;
+- (void)setIPv6Enabled:(BOOL)flag;
+
+- (BOOL)isIPv4Preferred;
+- (BOOL)isIPv6Preferred;
+- (BOOL)isIPVersionNeutral;
+
+- (void)setPreferIPv4;
+- (void)setPreferIPv6;
+- (void)setIPVersionNeutral;
+
+/**
+ * Gets/Sets the maximum size of the buffer that will be allocated for receive operations.
+ * The default maximum size is 9216 bytes.
+ *
+ * The theoretical maximum size of any IPv4 UDP packet is UINT16_MAX = 65535.
+ * The theoretical maximum size of any IPv6 UDP packet is UINT32_MAX = 4294967295.
+ *
+ * Since the OS/GCD notifies us of the size of each received UDP packet,
+ * the actual allocated buffer size for each packet is exact.
+ * And in practice the size of UDP packets is generally much smaller than the max.
+ * Indeed most protocols will send and receive packets of only a few bytes,
+ * or will set a limit on the size of packets to prevent fragmentation in the IP layer.
+ *
+ * If you set the buffer size too small, the sockets API in the OS will silently discard
+ * any extra data, and you will not be notified of the error.
+**/
+- (uint16_t)maxReceiveIPv4BufferSize;
+- (void)setMaxReceiveIPv4BufferSize:(uint16_t)max;
+
+- (uint32_t)maxReceiveIPv6BufferSize;
+- (void)setMaxReceiveIPv6BufferSize:(uint32_t)max;
+
+/**
+ * User data allows you to associate arbitrary information with the socket.
+ * This data is not used internally in any way.
+**/
+- (nullable id)userData;
+- (void)setUserData:(nullable id)arbitraryUserData;
+
+#pragma mark Diagnostics
+
+/**
+ * Returns the local address info for the socket.
+ *
+ * The localAddress method returns a sockaddr structure wrapped in a NSData object.
+ * The localHost method returns the human readable IP address as a string.
+ *
+ * Note: Address info may not be available until after the socket has been binded, connected
+ * or until after data has been sent.
+**/
+- (nullable NSData *)localAddress;
+- (nullable NSString *)localHost;
+- (uint16_t)localPort;
+
+- (nullable NSData *)localAddress_IPv4;
+- (nullable NSString *)localHost_IPv4;
+- (uint16_t)localPort_IPv4;
+
+- (nullable NSData *)localAddress_IPv6;
+- (nullable NSString *)localHost_IPv6;
+- (uint16_t)localPort_IPv6;
+
+/**
+ * Returns the remote address info for the socket.
+ *
+ * The connectedAddress method returns a sockaddr structure wrapped in a NSData object.
+ * The connectedHost method returns the human readable IP address as a string.
+ *
+ * Note: Since UDP is connectionless by design, connected address info
+ * will not be available unless the socket is explicitly connected to a remote host/port.
+ * If the socket is not connected, these methods will return nil / 0.
+**/
+- (nullable NSData *)connectedAddress;
+- (nullable NSString *)connectedHost;
+- (uint16_t)connectedPort;
+
+/**
+ * Returns whether or not this socket has been connected to a single host.
+ * By design, UDP is a connectionless protocol, and connecting is not needed.
+ * If connected, the socket will only be able to send/receive data to/from the connected host.
+**/
+- (BOOL)isConnected;
+
+/**
+ * Returns whether or not this socket has been closed.
+ * The only way a socket can be closed is if you explicitly call one of the close methods.
+**/
+- (BOOL)isClosed;
+
+/**
+ * Returns whether or not this socket is IPv4.
+ *
+ * By default this will be true, unless:
+ * - IPv4 is disabled (via setIPv4Enabled:)
+ * - The socket is explicitly bound to an IPv6 address
+ * - The socket is connected to an IPv6 address
+**/
+- (BOOL)isIPv4;
+
+/**
+ * Returns whether or not this socket is IPv6.
+ *
+ * By default this will be true, unless:
+ * - IPv6 is disabled (via setIPv6Enabled:)
+ * - The socket is explicitly bound to an IPv4 address
+ * _ The socket is connected to an IPv4 address
+ *
+ * This method will also return false on platforms that do not support IPv6.
+ * Note: The iPhone does not currently support IPv6.
+**/
+- (BOOL)isIPv6;
+
+#pragma mark Binding
+
+/**
+ * Binds the UDP socket to the given port.
+ * Binding should be done for server sockets that receive data prior to sending it.
+ * Client sockets can skip binding,
+ * as the OS will automatically assign the socket an available port when it starts sending data.
+ *
+ * You may optionally pass a port number of zero to immediately bind the socket,
+ * yet still allow the OS to automatically assign an available port.
+ *
+ * You cannot bind a socket after its been connected.
+ * You can only bind a socket once.
+ * You can still connect a socket (if desired) after binding.
+ *
+ * On success, returns YES.
+ * Otherwise returns NO, and sets errPtr. If you don't care about the error, you can pass NULL for errPtr.
+**/
+- (BOOL)bindToPort:(uint16_t)port error:(NSError **)errPtr;
+
+/**
+ * Binds the UDP socket to the given port and optional interface.
+ * Binding should be done for server sockets that receive data prior to sending it.
+ * Client sockets can skip binding,
+ * as the OS will automatically assign the socket an available port when it starts sending data.
+ *
+ * You may optionally pass a port number of zero to immediately bind the socket,
+ * yet still allow the OS to automatically assign an available port.
+ *
+ * The interface may be a name (e.g. "en1" or "lo0") or the corresponding IP address (e.g. "192.168.4.35").
+ * You may also use the special strings "localhost" or "loopback" to specify that
+ * the socket only accept packets from the local machine.
+ *
+ * You cannot bind a socket after its been connected.
+ * You can only bind a socket once.
+ * You can still connect a socket (if desired) after binding.
+ *
+ * On success, returns YES.
+ * Otherwise returns NO, and sets errPtr. If you don't care about the error, you can pass NULL for errPtr.
+**/
+- (BOOL)bindToPort:(uint16_t)port interface:(nullable NSString *)interface error:(NSError **)errPtr;
+
+/**
+ * Binds the UDP socket to the given address, specified as a sockaddr structure wrapped in a NSData object.
+ *
+ * If you have an existing struct sockaddr you can convert it to a NSData object like so:
+ * struct sockaddr sa -> NSData *dsa = [NSData dataWithBytes:&remoteAddr length:remoteAddr.sa_len];
+ * struct sockaddr *sa -> NSData *dsa = [NSData dataWithBytes:remoteAddr length:remoteAddr->sa_len];
+ *
+ * Binding should be done for server sockets that receive data prior to sending it.
+ * Client sockets can skip binding,
+ * as the OS will automatically assign the socket an available port when it starts sending data.
+ *
+ * You cannot bind a socket after its been connected.
+ * You can only bind a socket once.
+ * You can still connect a socket (if desired) after binding.
+ *
+ * On success, returns YES.
+ * Otherwise returns NO, and sets errPtr. If you don't care about the error, you can pass NULL for errPtr.
+**/
+- (BOOL)bindToAddress:(NSData *)localAddr error:(NSError **)errPtr;
+
+#pragma mark Connecting
+
+/**
+ * Connects the UDP socket to the given host and port.
+ * By design, UDP is a connectionless protocol, and connecting is not needed.
+ *
+ * Choosing to connect to a specific host/port has the following effect:
+ * - You will only be able to send data to the connected host/port.
+ * - You will only be able to receive data from the connected host/port.
+ * - You will receive ICMP messages that come from the connected host/port, such as "connection refused".
+ *
+ * The actual process of connecting a UDP socket does not result in any communication on the socket.
+ * It simply changes the internal state of the socket.
+ *
+ * You cannot bind a socket after it has been connected.
+ * You can only connect a socket once.
+ *
+ * The host may be a domain name (e.g. "deusty.com") or an IP address string (e.g. "192.168.0.2").
+ *
+ * This method is asynchronous as it requires a DNS lookup to resolve the given host name.
+ * If an obvious error is detected, this method immediately returns NO and sets errPtr.
+ * If you don't care about the error, you can pass nil for errPtr.
+ * Otherwise, this method returns YES and begins the asynchronous connection process.
+ * The result of the asynchronous connection process will be reported via the delegate methods.
+ **/
+- (BOOL)connectToHost:(NSString *)host onPort:(uint16_t)port error:(NSError **)errPtr;
+
+/**
+ * Connects the UDP socket to the given address, specified as a sockaddr structure wrapped in a NSData object.
+ *
+ * If you have an existing struct sockaddr you can convert it to a NSData object like so:
+ * struct sockaddr sa -> NSData *dsa = [NSData dataWithBytes:&remoteAddr length:remoteAddr.sa_len];
+ * struct sockaddr *sa -> NSData *dsa = [NSData dataWithBytes:remoteAddr length:remoteAddr->sa_len];
+ *
+ * By design, UDP is a connectionless protocol, and connecting is not needed.
+ *
+ * Choosing to connect to a specific address has the following effect:
+ * - You will only be able to send data to the connected address.
+ * - You will only be able to receive data from the connected address.
+ * - You will receive ICMP messages that come from the connected address, such as "connection refused".
+ *
+ * Connecting a UDP socket does not result in any communication on the socket.
+ * It simply changes the internal state of the socket.
+ *
+ * You cannot bind a socket after its been connected.
+ * You can only connect a socket once.
+ *
+ * On success, returns YES.
+ * Otherwise returns NO, and sets errPtr. If you don't care about the error, you can pass nil for errPtr.
+ *
+ * Note: Unlike the connectToHost:onPort:error: method, this method does not require a DNS lookup.
+ * Thus when this method returns, the connection has either failed or fully completed.
+ * In other words, this method is synchronous, unlike the asynchronous connectToHost::: method.
+ * However, for compatibility and simplification of delegate code, if this method returns YES
+ * then the corresponding delegate method (udpSocket:didConnectToHost:port:) is still invoked.
+**/
+- (BOOL)connectToAddress:(NSData *)remoteAddr error:(NSError **)errPtr;
+
+#pragma mark Multicast
+
+/**
+ * Join multicast group.
+ * Group should be an IP address (eg @"225.228.0.1").
+ *
+ * On success, returns YES.
+ * Otherwise returns NO, and sets errPtr. If you don't care about the error, you can pass nil for errPtr.
+**/
+- (BOOL)joinMulticastGroup:(NSString *)group error:(NSError **)errPtr;
+
+/**
+ * Join multicast group.
+ * Group should be an IP address (eg @"225.228.0.1").
+ * The interface may be a name (e.g. "en1" or "lo0") or the corresponding IP address (e.g. "192.168.4.35").
+ *
+ * On success, returns YES.
+ * Otherwise returns NO, and sets errPtr. If you don't care about the error, you can pass nil for errPtr.
+**/
+- (BOOL)joinMulticastGroup:(NSString *)group onInterface:(nullable NSString *)interface error:(NSError **)errPtr;
+
+- (BOOL)leaveMulticastGroup:(NSString *)group error:(NSError **)errPtr;
+- (BOOL)leaveMulticastGroup:(NSString *)group onInterface:(nullable NSString *)interface error:(NSError **)errPtr;
+
+#pragma mark Reuse Port
+
+/**
+ * By default, only one socket can be bound to a given IP address + port at a time.
+ * To enable multiple processes to simultaneously bind to the same address+port,
+ * you need to enable this functionality in the socket. All processes that wish to
+ * use the address+port simultaneously must all enable reuse port on the socket
+ * bound to that port.
+ **/
+- (BOOL)enableReusePort:(BOOL)flag error:(NSError **)errPtr;
+
+#pragma mark Broadcast
+
+/**
+ * By default, the underlying socket in the OS will not allow you to send broadcast messages.
+ * In order to send broadcast messages, you need to enable this functionality in the socket.
+ *
+ * A broadcast is a UDP message to addresses like "192.168.255.255" or "255.255.255.255" that is
+ * delivered to every host on the network.
+ * The reason this is generally disabled by default (by the OS) is to prevent
+ * accidental broadcast messages from flooding the network.
+**/
+- (BOOL)enableBroadcast:(BOOL)flag error:(NSError **)errPtr;
+
+#pragma mark Sending
+
+/**
+ * Asynchronously sends the given data, with the given timeout and tag.
+ *
+ * This method may only be used with a connected socket.
+ * Recall that connecting is optional for a UDP socket.
+ * For connected sockets, data can only be sent to the connected address.
+ * For non-connected sockets, the remote destination is specified for each packet.
+ * For more information about optionally connecting udp sockets, see the documentation for the connect methods above.
+ *
+ * @param data
+ * The data to send.
+ * If data is nil or zero-length, this method does nothing.
+ * If passing NSMutableData, please read the thread-safety notice below.
+ *
+ * @param timeout
+ * The timeout for the send opeartion.
+ * If the timeout value is negative, the send operation will not use a timeout.
+ *
+ * @param tag
+ * The tag is for your convenience.
+ * It is not sent or received over the socket in any manner what-so-ever.
+ * It is reported back as a parameter in the udpSocket:didSendDataWithTag:
+ * or udpSocket:didNotSendDataWithTag:dueToError: methods.
+ * You can use it as an array index, state id, type constant, etc.
+ *
+ *
+ * Thread-Safety Note:
+ * If the given data parameter is mutable (NSMutableData) then you MUST NOT alter the data while
+ * the socket is sending it. In other words, it's not safe to alter the data until after the delegate method
+ * udpSocket:didSendDataWithTag: or udpSocket:didNotSendDataWithTag:dueToError: is invoked signifying
+ * that this particular send operation has completed.
+ * This is due to the fact that GCDAsyncUdpSocket does NOT copy the data.
+ * It simply retains it for performance reasons.
+ * Often times, if NSMutableData is passed, it is because a request/response was built up in memory.
+ * Copying this data adds an unwanted/unneeded overhead.
+ * If you need to write data from an immutable buffer, and you need to alter the buffer before the socket
+ * completes sending the bytes (which is NOT immediately after this method returns, but rather at a later time
+ * when the delegate method notifies you), then you should first copy the bytes, and pass the copy to this method.
+**/
+- (void)sendData:(NSData *)data withTimeout:(NSTimeInterval)timeout tag:(long)tag;
+
+/**
+ * Asynchronously sends the given data, with the given timeout and tag, to the given host and port.
+ *
+ * This method cannot be used with a connected socket.
+ * Recall that connecting is optional for a UDP socket.
+ * For connected sockets, data can only be sent to the connected address.
+ * For non-connected sockets, the remote destination is specified for each packet.
+ * For more information about optionally connecting udp sockets, see the documentation for the connect methods above.
+ *
+ * @param data
+ * The data to send.
+ * If data is nil or zero-length, this method does nothing.
+ * If passing NSMutableData, please read the thread-safety notice below.
+ *
+ * @param host
+ * The destination to send the udp packet to.
+ * May be specified as a domain name (e.g. "deusty.com") or an IP address string (e.g. "192.168.0.2").
+ * You may also use the convenience strings of "loopback" or "localhost".
+ *
+ * @param port
+ * The port of the host to send to.
+ *
+ * @param timeout
+ * The timeout for the send opeartion.
+ * If the timeout value is negative, the send operation will not use a timeout.
+ *
+ * @param tag
+ * The tag is for your convenience.
+ * It is not sent or received over the socket in any manner what-so-ever.
+ * It is reported back as a parameter in the udpSocket:didSendDataWithTag:
+ * or udpSocket:didNotSendDataWithTag:dueToError: methods.
+ * You can use it as an array index, state id, type constant, etc.
+ *
+ *
+ * Thread-Safety Note:
+ * If the given data parameter is mutable (NSMutableData) then you MUST NOT alter the data while
+ * the socket is sending it. In other words, it's not safe to alter the data until after the delegate method
+ * udpSocket:didSendDataWithTag: or udpSocket:didNotSendDataWithTag:dueToError: is invoked signifying
+ * that this particular send operation has completed.
+ * This is due to the fact that GCDAsyncUdpSocket does NOT copy the data.
+ * It simply retains it for performance reasons.
+ * Often times, if NSMutableData is passed, it is because a request/response was built up in memory.
+ * Copying this data adds an unwanted/unneeded overhead.
+ * If you need to write data from an immutable buffer, and you need to alter the buffer before the socket
+ * completes sending the bytes (which is NOT immediately after this method returns, but rather at a later time
+ * when the delegate method notifies you), then you should first copy the bytes, and pass the copy to this method.
+**/
+- (void)sendData:(NSData *)data
+ toHost:(NSString *)host
+ port:(uint16_t)port
+ withTimeout:(NSTimeInterval)timeout
+ tag:(long)tag;
+
+/**
+ * Asynchronously sends the given data, with the given timeout and tag, to the given address.
+ *
+ * This method cannot be used with a connected socket.
+ * Recall that connecting is optional for a UDP socket.
+ * For connected sockets, data can only be sent to the connected address.
+ * For non-connected sockets, the remote destination is specified for each packet.
+ * For more information about optionally connecting udp sockets, see the documentation for the connect methods above.
+ *
+ * @param data
+ * The data to send.
+ * If data is nil or zero-length, this method does nothing.
+ * If passing NSMutableData, please read the thread-safety notice below.
+ *
+ * @param remoteAddr
+ * The address to send the data to (specified as a sockaddr structure wrapped in a NSData object).
+ *
+ * @param timeout
+ * The timeout for the send opeartion.
+ * If the timeout value is negative, the send operation will not use a timeout.
+ *
+ * @param tag
+ * The tag is for your convenience.
+ * It is not sent or received over the socket in any manner what-so-ever.
+ * It is reported back as a parameter in the udpSocket:didSendDataWithTag:
+ * or udpSocket:didNotSendDataWithTag:dueToError: methods.
+ * You can use it as an array index, state id, type constant, etc.
+ *
+ *
+ * Thread-Safety Note:
+ * If the given data parameter is mutable (NSMutableData) then you MUST NOT alter the data while
+ * the socket is sending it. In other words, it's not safe to alter the data until after the delegate method
+ * udpSocket:didSendDataWithTag: or udpSocket:didNotSendDataWithTag:dueToError: is invoked signifying
+ * that this particular send operation has completed.
+ * This is due to the fact that GCDAsyncUdpSocket does NOT copy the data.
+ * It simply retains it for performance reasons.
+ * Often times, if NSMutableData is passed, it is because a request/response was built up in memory.
+ * Copying this data adds an unwanted/unneeded overhead.
+ * If you need to write data from an immutable buffer, and you need to alter the buffer before the socket
+ * completes sending the bytes (which is NOT immediately after this method returns, but rather at a later time
+ * when the delegate method notifies you), then you should first copy the bytes, and pass the copy to this method.
+**/
+- (void)sendData:(NSData *)data toAddress:(NSData *)remoteAddr withTimeout:(NSTimeInterval)timeout tag:(long)tag;
+
+/**
+ * You may optionally set a send filter for the socket.
+ * A filter can provide several interesting possibilities:
+ *
+ * 1. Optional caching of resolved addresses for domain names.
+ * The cache could later be consulted, resulting in fewer system calls to getaddrinfo.
+ *
+ * 2. Reusable modules of code for bandwidth monitoring.
+ *
+ * 3. Sometimes traffic shapers are needed to simulate real world environments.
+ * A filter allows you to write custom code to simulate such environments.
+ * The ability to code this yourself is especially helpful when your simulated environment
+ * is more complicated than simple traffic shaping (e.g. simulating a cone port restricted router),
+ * or the system tools to handle this aren't available (e.g. on a mobile device).
+ *
+ * For more information about GCDAsyncUdpSocketSendFilterBlock, see the documentation for its typedef.
+ * To remove a previously set filter, invoke this method and pass a nil filterBlock and NULL filterQueue.
+ *
+ * Note: This method invokes setSendFilter:withQueue:isAsynchronous: (documented below),
+ * passing YES for the isAsynchronous parameter.
+**/
+- (void)setSendFilter:(nullable GCDAsyncUdpSocketSendFilterBlock)filterBlock withQueue:(nullable dispatch_queue_t)filterQueue;
+
+/**
+ * The receive filter can be run via dispatch_async or dispatch_sync.
+ * Most typical situations call for asynchronous operation.
+ *
+ * However, there are a few situations in which synchronous operation is preferred.
+ * Such is the case when the filter is extremely minimal and fast.
+ * This is because dispatch_sync is faster than dispatch_async.
+ *
+ * If you choose synchronous operation, be aware of possible deadlock conditions.
+ * Since the socket queue is executing your block via dispatch_sync,
+ * then you cannot perform any tasks which may invoke dispatch_sync on the socket queue.
+ * For example, you can't query properties on the socket.
+**/
+- (void)setSendFilter:(nullable GCDAsyncUdpSocketSendFilterBlock)filterBlock
+ withQueue:(nullable dispatch_queue_t)filterQueue
+ isAsynchronous:(BOOL)isAsynchronous;
+
+#pragma mark Receiving
+
+/**
+ * There are two modes of operation for receiving packets: one-at-a-time & continuous.
+ *
+ * In one-at-a-time mode, you call receiveOnce everytime your delegate is ready to process an incoming udp packet.
+ * Receiving packets one-at-a-time may be better suited for implementing certain state machine code,
+ * where your state machine may not always be ready to process incoming packets.
+ *
+ * In continuous mode, the delegate is invoked immediately everytime incoming udp packets are received.
+ * Receiving packets continuously is better suited to real-time streaming applications.
+ *
+ * You may switch back and forth between one-at-a-time mode and continuous mode.
+ * If the socket is currently in continuous mode, calling this method will switch it to one-at-a-time mode.
+ *
+ * When a packet is received (and not filtered by the optional receive filter),
+ * the delegate method (udpSocket:didReceiveData:fromAddress:withFilterContext:) is invoked.
+ *
+ * If the socket is able to begin receiving packets, this method returns YES.
+ * Otherwise it returns NO, and sets the errPtr with appropriate error information.
+ *
+ * An example error:
+ * You created a udp socket to act as a server, and immediately called receive.
+ * You forgot to first bind the socket to a port number, and received a error with a message like:
+ * "Must bind socket before you can receive data."
+**/
+- (BOOL)receiveOnce:(NSError **)errPtr;
+
+/**
+ * There are two modes of operation for receiving packets: one-at-a-time & continuous.
+ *
+ * In one-at-a-time mode, you call receiveOnce everytime your delegate is ready to process an incoming udp packet.
+ * Receiving packets one-at-a-time may be better suited for implementing certain state machine code,
+ * where your state machine may not always be ready to process incoming packets.
+ *
+ * In continuous mode, the delegate is invoked immediately everytime incoming udp packets are received.
+ * Receiving packets continuously is better suited to real-time streaming applications.
+ *
+ * You may switch back and forth between one-at-a-time mode and continuous mode.
+ * If the socket is currently in one-at-a-time mode, calling this method will switch it to continuous mode.
+ *
+ * For every received packet (not filtered by the optional receive filter),
+ * the delegate method (udpSocket:didReceiveData:fromAddress:withFilterContext:) is invoked.
+ *
+ * If the socket is able to begin receiving packets, this method returns YES.
+ * Otherwise it returns NO, and sets the errPtr with appropriate error information.
+ *
+ * An example error:
+ * You created a udp socket to act as a server, and immediately called receive.
+ * You forgot to first bind the socket to a port number, and received a error with a message like:
+ * "Must bind socket before you can receive data."
+**/
+- (BOOL)beginReceiving:(NSError **)errPtr;
+
+/**
+ * If the socket is currently receiving (beginReceiving has been called), this method pauses the receiving.
+ * That is, it won't read any more packets from the underlying OS socket until beginReceiving is called again.
+ *
+ * Important Note:
+ * GCDAsyncUdpSocket may be running in parallel with your code.
+ * That is, your delegate is likely running on a separate thread/dispatch_queue.
+ * When you invoke this method, GCDAsyncUdpSocket may have already dispatched delegate methods to be invoked.
+ * Thus, if those delegate methods have already been dispatch_async'd,
+ * your didReceive delegate method may still be invoked after this method has been called.
+ * You should be aware of this, and program defensively.
+**/
+- (void)pauseReceiving;
+
+/**
+ * You may optionally set a receive filter for the socket.
+ * This receive filter may be set to run in its own queue (independent of delegate queue).
+ *
+ * A filter can provide several useful features.
+ *
+ * 1. Many times udp packets need to be parsed.
+ * Since the filter can run in its own independent queue, you can parallelize this parsing quite easily.
+ * The end result is a parallel socket io, datagram parsing, and packet processing.
+ *
+ * 2. Many times udp packets are discarded because they are duplicate/unneeded/unsolicited.
+ * The filter can prevent such packets from arriving at the delegate.
+ * And because the filter can run in its own independent queue, this doesn't slow down the delegate.
+ *
+ * - Since the udp protocol does not guarantee delivery, udp packets may be lost.
+ * Many protocols built atop udp thus provide various resend/re-request algorithms.
+ * This sometimes results in duplicate packets arriving.
+ * A filter may allow you to architect the duplicate detection code to run in parallel to normal processing.
+ *
+ * - Since the udp socket may be connectionless, its possible for unsolicited packets to arrive.
+ * Such packets need to be ignored.
+ *
+ * 3. Sometimes traffic shapers are needed to simulate real world environments.
+ * A filter allows you to write custom code to simulate such environments.
+ * The ability to code this yourself is especially helpful when your simulated environment
+ * is more complicated than simple traffic shaping (e.g. simulating a cone port restricted router),
+ * or the system tools to handle this aren't available (e.g. on a mobile device).
+ *
+ * Example:
+ *
+ * GCDAsyncUdpSocketReceiveFilterBlock filter = ^BOOL (NSData *data, NSData *address, id *context) {
+ *
+ * MyProtocolMessage *msg = [MyProtocol parseMessage:data];
+ *
+ * *context = response;
+ * return (response != nil);
+ * };
+ * [udpSocket setReceiveFilter:filter withQueue:myParsingQueue];
+ *
+ * For more information about GCDAsyncUdpSocketReceiveFilterBlock, see the documentation for its typedef.
+ * To remove a previously set filter, invoke this method and pass a nil filterBlock and NULL filterQueue.
+ *
+ * Note: This method invokes setReceiveFilter:withQueue:isAsynchronous: (documented below),
+ * passing YES for the isAsynchronous parameter.
+**/
+- (void)setReceiveFilter:(nullable GCDAsyncUdpSocketReceiveFilterBlock)filterBlock withQueue:(nullable dispatch_queue_t)filterQueue;
+
+/**
+ * The receive filter can be run via dispatch_async or dispatch_sync.
+ * Most typical situations call for asynchronous operation.
+ *
+ * However, there are a few situations in which synchronous operation is preferred.
+ * Such is the case when the filter is extremely minimal and fast.
+ * This is because dispatch_sync is faster than dispatch_async.
+ *
+ * If you choose synchronous operation, be aware of possible deadlock conditions.
+ * Since the socket queue is executing your block via dispatch_sync,
+ * then you cannot perform any tasks which may invoke dispatch_sync on the socket queue.
+ * For example, you can't query properties on the socket.
+**/
+- (void)setReceiveFilter:(nullable GCDAsyncUdpSocketReceiveFilterBlock)filterBlock
+ withQueue:(nullable dispatch_queue_t)filterQueue
+ isAsynchronous:(BOOL)isAsynchronous;
+
+#pragma mark Closing
+
+/**
+ * Immediately closes the underlying socket.
+ * Any pending send operations are discarded.
+ *
+ * The GCDAsyncUdpSocket instance may optionally be used again.
+ * (it will setup/configure/use another unnderlying BSD socket).
+**/
+- (void)close;
+
+/**
+ * Closes the underlying socket after all pending send operations have been sent.
+ *
+ * The GCDAsyncUdpSocket instance may optionally be used again.
+ * (it will setup/configure/use another unnderlying BSD socket).
+**/
+- (void)closeAfterSending;
+
+#pragma mark Advanced
+/**
+ * GCDAsyncSocket maintains thread safety by using an internal serial dispatch_queue.
+ * In most cases, the instance creates this queue itself.
+ * However, to allow for maximum flexibility, the internal queue may be passed in the init method.
+ * This allows for some advanced options such as controlling socket priority via target queues.
+ * However, when one begins to use target queues like this, they open the door to some specific deadlock issues.
+ *
+ * For example, imagine there are 2 queues:
+ * dispatch_queue_t socketQueue;
+ * dispatch_queue_t socketTargetQueue;
+ *
+ * If you do this (pseudo-code):
+ * socketQueue.targetQueue = socketTargetQueue;
+ *
+ * Then all socketQueue operations will actually get run on the given socketTargetQueue.
+ * This is fine and works great in most situations.
+ * But if you run code directly from within the socketTargetQueue that accesses the socket,
+ * you could potentially get deadlock. Imagine the following code:
+ *
+ * - (BOOL)socketHasSomething
+ * {
+ * __block BOOL result = NO;
+ * dispatch_block_t block = ^{
+ * result = [self someInternalMethodToBeRunOnlyOnSocketQueue];
+ * }
+ * if (is_executing_on_queue(socketQueue))
+ * block();
+ * else
+ * dispatch_sync(socketQueue, block);
+ *
+ * return result;
+ * }
+ *
+ * What happens if you call this method from the socketTargetQueue? The result is deadlock.
+ * This is because the GCD API offers no mechanism to discover a queue's targetQueue.
+ * Thus we have no idea if our socketQueue is configured with a targetQueue.
+ * If we had this information, we could easily avoid deadlock.
+ * But, since these API's are missing or unfeasible, you'll have to explicitly set it.
+ *
+ * IF you pass a socketQueue via the init method,
+ * AND you've configured the passed socketQueue with a targetQueue,
+ * THEN you should pass the end queue in the target hierarchy.
+ *
+ * For example, consider the following queue hierarchy:
+ * socketQueue -> ipQueue -> moduleQueue
+ *
+ * This example demonstrates priority shaping within some server.
+ * All incoming client connections from the same IP address are executed on the same target queue.
+ * And all connections for a particular module are executed on the same target queue.
+ * Thus, the priority of all networking for the entire module can be changed on the fly.
+ * Additionally, networking traffic from a single IP cannot monopolize the module.
+ *
+ * Here's how you would accomplish something like that:
+ * - (dispatch_queue_t)newSocketQueueForConnectionFromAddress:(NSData *)address onSocket:(GCDAsyncSocket *)sock
+ * {
+ * dispatch_queue_t socketQueue = dispatch_queue_create("", NULL);
+ * dispatch_queue_t ipQueue = [self ipQueueForAddress:address];
+ *
+ * dispatch_set_target_queue(socketQueue, ipQueue);
+ * dispatch_set_target_queue(iqQueue, moduleQueue);
+ *
+ * return socketQueue;
+ * }
+ * - (void)socket:(GCDAsyncSocket *)sock didAcceptNewSocket:(GCDAsyncSocket *)newSocket
+ * {
+ * [clientConnections addObject:newSocket];
+ * [newSocket markSocketQueueTargetQueue:moduleQueue];
+ * }
+ *
+ * Note: This workaround is ONLY needed if you intend to execute code directly on the ipQueue or moduleQueue.
+ * This is often NOT the case, as such queues are used solely for execution shaping.
+ **/
+- (void)markSocketQueueTargetQueue:(dispatch_queue_t)socketQueuesPreConfiguredTargetQueue;
+- (void)unmarkSocketQueueTargetQueue:(dispatch_queue_t)socketQueuesPreviouslyConfiguredTargetQueue;
+
+/**
+ * It's not thread-safe to access certain variables from outside the socket's internal queue.
+ *
+ * For example, the socket file descriptor.
+ * File descriptors are simply integers which reference an index in the per-process file table.
+ * However, when one requests a new file descriptor (by opening a file or socket),
+ * the file descriptor returned is guaranteed to be the lowest numbered unused descriptor.
+ * So if we're not careful, the following could be possible:
+ *
+ * - Thread A invokes a method which returns the socket's file descriptor.
+ * - The socket is closed via the socket's internal queue on thread B.
+ * - Thread C opens a file, and subsequently receives the file descriptor that was previously the socket's FD.
+ * - Thread A is now accessing/altering the file instead of the socket.
+ *
+ * In addition to this, other variables are not actually objects,
+ * and thus cannot be retained/released or even autoreleased.
+ * An example is the sslContext, of type SSLContextRef, which is actually a malloc'd struct.
+ *
+ * Although there are internal variables that make it difficult to maintain thread-safety,
+ * it is important to provide access to these variables
+ * to ensure this class can be used in a wide array of environments.
+ * This method helps to accomplish this by invoking the current block on the socket's internal queue.
+ * The methods below can be invoked from within the block to access
+ * those generally thread-unsafe internal variables in a thread-safe manner.
+ * The given block will be invoked synchronously on the socket's internal queue.
+ *
+ * If you save references to any protected variables and use them outside the block, you do so at your own peril.
+**/
+- (void)performBlock:(dispatch_block_t)block;
+
+/**
+ * These methods are only available from within the context of a performBlock: invocation.
+ * See the documentation for the performBlock: method above.
+ *
+ * Provides access to the socket's file descriptor(s).
+ * If the socket isn't connected, or explicity bound to a particular interface,
+ * it might actually have multiple internal socket file descriptors - one for IPv4 and one for IPv6.
+**/
+- (int)socketFD;
+- (int)socket4FD;
+- (int)socket6FD;
+
+#if TARGET_OS_IPHONE
+
+/**
+ * These methods are only available from within the context of a performBlock: invocation.
+ * See the documentation for the performBlock: method above.
+ *
+ * Returns (creating if necessary) a CFReadStream/CFWriteStream for the internal socket.
+ *
+ * Generally GCDAsyncUdpSocket doesn't use CFStream. (It uses the faster GCD API's.)
+ * However, if you need one for any reason,
+ * these methods are a convenient way to get access to a safe instance of one.
+**/
+- (nullable CFReadStreamRef)readStream;
+- (nullable CFWriteStreamRef)writeStream;
+
+/**
+ * This method is only available from within the context of a performBlock: invocation.
+ * See the documentation for the performBlock: method above.
+ *
+ * Configures the socket to allow it to operate when the iOS application has been backgrounded.
+ * In other words, this method creates a read & write stream, and invokes:
+ *
+ * CFReadStreamSetProperty(readStream, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+ * CFWriteStreamSetProperty(writeStream, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+ *
+ * Returns YES if successful, NO otherwise.
+ *
+ * Example usage:
+ *
+ * [asyncUdpSocket performBlock:^{
+ * [asyncUdpSocket enableBackgroundingOnSocket];
+ * }];
+ *
+ *
+ * NOTE : Apple doesn't currently support backgrounding UDP sockets. (Only TCP for now).
+**/
+//- (BOOL)enableBackgroundingOnSockets;
+
+#endif
+
+#pragma mark Utilities
+
+/**
+ * Extracting host/port/family information from raw address data.
+**/
+
++ (nullable NSString *)hostFromAddress:(NSData *)address;
++ (uint16_t)portFromAddress:(NSData *)address;
++ (int)familyFromAddress:(NSData *)address;
+
++ (BOOL)isIPv4Address:(NSData *)address;
++ (BOOL)isIPv6Address:(NSData *)address;
+
++ (BOOL)getHost:(NSString * __nullable * __nullable)hostPtr port:(uint16_t * __nullable)portPtr fromAddress:(NSData *)address;
++ (BOOL)getHost:(NSString * __nullable * __nullable)hostPtr port:(uint16_t * __nullable)portPtr family:(int * __nullable)afPtr fromAddress:(NSData *)address;
+
+@end
+
+NS_ASSUME_NONNULL_END
diff --git a/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncUdpSocket.m b/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncUdpSocket.m
new file mode 100755
index 0000000..27c739d
--- /dev/null
+++ b/SocketDemo/Utils/GCDAsyncSocket/GCDAsyncUdpSocket.m
@@ -0,0 +1,5430 @@
+//
+// GCDAsyncUdpSocket
+//
+// This class is in the public domain.
+// Originally created by Robbie Hanson of Deusty LLC.
+// Updated and maintained by Deusty LLC and the Apple development community.
+//
+// https://github.com/robbiehanson/CocoaAsyncSocket
+//
+
+#import "GCDAsyncUdpSocket.h"
+
+#if ! __has_feature(objc_arc)
+#warning This file must be compiled with ARC. Use -fobjc-arc flag (or convert project to ARC).
+// For more information see: https://github.com/robbiehanson/CocoaAsyncSocket/wiki/ARC
+#endif
+
+#if TARGET_OS_IPHONE
+ #import <CFNetwork/CFNetwork.h>
+ #import <UIKit/UIKit.h>
+#endif
+
+#import <arpa/inet.h>
+#import <fcntl.h>
+#import <ifaddrs.h>
+#import <netdb.h>
+#import <net/if.h>
+#import <sys/socket.h>
+#import <sys/types.h>
+
+
+#if 0
+
+// Logging Enabled - See log level below
+
+// Logging uses the CocoaLumberjack framework (which is also GCD based).
+// http://code.google.com/p/cocoalumberjack/
+//
+// It allows us to do a lot of logging without significantly slowing down the code.
+#import "DDLog.h"
+
+#define LogAsync NO
+#define LogContext 65535
+
+#define LogObjc(flg, frmt, ...) LOG_OBJC_MAYBE(LogAsync, logLevel, flg, LogContext, frmt, ##__VA_ARGS__)
+#define LogC(flg, frmt, ...) LOG_C_MAYBE(LogAsync, logLevel, flg, LogContext, frmt, ##__VA_ARGS__)
+
+#define LogError(frmt, ...) LogObjc(LOG_FLAG_ERROR, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogWarn(frmt, ...) LogObjc(LOG_FLAG_WARN, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogInfo(frmt, ...) LogObjc(LOG_FLAG_INFO, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogVerbose(frmt, ...) LogObjc(LOG_FLAG_VERBOSE, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+
+#define LogCError(frmt, ...) LogC(LOG_FLAG_ERROR, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogCWarn(frmt, ...) LogC(LOG_FLAG_WARN, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogCInfo(frmt, ...) LogC(LOG_FLAG_INFO, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+#define LogCVerbose(frmt, ...) LogC(LOG_FLAG_VERBOSE, (@"%@: " frmt), THIS_FILE, ##__VA_ARGS__)
+
+#define LogTrace() LogObjc(LOG_FLAG_VERBOSE, @"%@: %@", THIS_FILE, THIS_METHOD)
+#define LogCTrace() LogC(LOG_FLAG_VERBOSE, @"%@: %s", THIS_FILE, __FUNCTION__)
+
+// Log levels : off, error, warn, info, verbose
+static const int logLevel = LOG_LEVEL_VERBOSE;
+
+#else
+
+// Logging Disabled
+
+#define LogError(frmt, ...) {}
+#define LogWarn(frmt, ...) {}
+#define LogInfo(frmt, ...) {}
+#define LogVerbose(frmt, ...) {}
+
+#define LogCError(frmt, ...) {}
+#define LogCWarn(frmt, ...) {}
+#define LogCInfo(frmt, ...) {}
+#define LogCVerbose(frmt, ...) {}
+
+#define LogTrace() {}
+#define LogCTrace(frmt, ...) {}
+
+#endif
+
+/**
+ * Seeing a return statements within an inner block
+ * can sometimes be mistaken for a return point of the enclosing method.
+ * This makes inline blocks a bit easier to read.
+**/
+#define return_from_block return
+
+/**
+ * A socket file descriptor is really just an integer.
+ * It represents the index of the socket within the kernel.
+ * This makes invalid file descriptor comparisons easier to read.
+**/
+#define SOCKET_NULL -1
+
+/**
+ * Just to type less code.
+**/
+#define AutoreleasedBlock(block) ^{ @autoreleasepool { block(); }}
+
+
+@class GCDAsyncUdpSendPacket;
+
+NSString *const GCDAsyncUdpSocketException = @"GCDAsyncUdpSocketException";
+NSString *const GCDAsyncUdpSocketErrorDomain = @"GCDAsyncUdpSocketErrorDomain";
+
+NSString *const GCDAsyncUdpSocketQueueName = @"GCDAsyncUdpSocket";
+NSString *const GCDAsyncUdpSocketThreadName = @"GCDAsyncUdpSocket-CFStream";
+
+enum GCDAsyncUdpSocketFlags
+{
+ kDidCreateSockets = 1 << 0, // If set, the sockets have been created.
+ kDidBind = 1 << 1, // If set, bind has been called.
+ kConnecting = 1 << 2, // If set, a connection attempt is in progress.
+ kDidConnect = 1 << 3, // If set, socket is connected.
+ kReceiveOnce = 1 << 4, // If set, one-at-a-time receive is enabled
+ kReceiveContinuous = 1 << 5, // If set, continuous receive is enabled
+ kIPv4Deactivated = 1 << 6, // If set, socket4 was closed due to bind or connect on IPv6.
+ kIPv6Deactivated = 1 << 7, // If set, socket6 was closed due to bind or connect on IPv4.
+ kSend4SourceSuspended = 1 << 8, // If set, send4Source is suspended.
+ kSend6SourceSuspended = 1 << 9, // If set, send6Source is suspended.
+ kReceive4SourceSuspended = 1 << 10, // If set, receive4Source is suspended.
+ kReceive6SourceSuspended = 1 << 11, // If set, receive6Source is suspended.
+ kSock4CanAcceptBytes = 1 << 12, // If set, we know socket4 can accept bytes. If unset, it's unknown.
+ kSock6CanAcceptBytes = 1 << 13, // If set, we know socket6 can accept bytes. If unset, it's unknown.
+ kForbidSendReceive = 1 << 14, // If set, no new send or receive operations are allowed to be queued.
+ kCloseAfterSends = 1 << 15, // If set, close as soon as no more sends are queued.
+ kFlipFlop = 1 << 16, // Used to alternate between IPv4 and IPv6 sockets.
+#if TARGET_OS_IPHONE
+ kAddedStreamListener = 1 << 17, // If set, CFStreams have been added to listener thread
+#endif
+};
+
+enum GCDAsyncUdpSocketConfig
+{
+ kIPv4Disabled = 1 << 0, // If set, IPv4 is disabled
+ kIPv6Disabled = 1 << 1, // If set, IPv6 is disabled
+ kPreferIPv4 = 1 << 2, // If set, IPv4 is preferred over IPv6
+ kPreferIPv6 = 1 << 3, // If set, IPv6 is preferred over IPv4
+};
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+@interface GCDAsyncUdpSocket ()
+{
+#if __has_feature(objc_arc_weak)
+ __weak id delegate;
+#else
+ __unsafe_unretained id delegate;
+#endif
+ dispatch_queue_t delegateQueue;
+
+ GCDAsyncUdpSocketReceiveFilterBlock receiveFilterBlock;
+ dispatch_queue_t receiveFilterQueue;
+ BOOL receiveFilterAsync;
+
+ GCDAsyncUdpSocketSendFilterBlock sendFilterBlock;
+ dispatch_queue_t sendFilterQueue;
+ BOOL sendFilterAsync;
+
+ uint32_t flags;
+ uint16_t config;
+
+ uint16_t max4ReceiveSize;
+ uint32_t max6ReceiveSize;
+
+ int socket4FD;
+ int socket6FD;
+
+ dispatch_queue_t socketQueue;
+
+ dispatch_source_t send4Source;
+ dispatch_source_t send6Source;
+ dispatch_source_t receive4Source;
+ dispatch_source_t receive6Source;
+ dispatch_source_t sendTimer;
+
+ GCDAsyncUdpSendPacket *currentSend;
+ NSMutableArray *sendQueue;
+
+ unsigned long socket4FDBytesAvailable;
+ unsigned long socket6FDBytesAvailable;
+
+ uint32_t pendingFilterOperations;
+
+ NSData *cachedLocalAddress4;
+ NSString *cachedLocalHost4;
+ uint16_t cachedLocalPort4;
+
+ NSData *cachedLocalAddress6;
+ NSString *cachedLocalHost6;
+ uint16_t cachedLocalPort6;
+
+ NSData *cachedConnectedAddress;
+ NSString *cachedConnectedHost;
+ uint16_t cachedConnectedPort;
+ int cachedConnectedFamily;
+
+ void *IsOnSocketQueueOrTargetQueueKey;
+
+#if TARGET_OS_IPHONE
+ CFStreamClientContext streamContext;
+ CFReadStreamRef readStream4;
+ CFReadStreamRef readStream6;
+ CFWriteStreamRef writeStream4;
+ CFWriteStreamRef writeStream6;
+#endif
+
+ id userData;
+}
+
+- (void)resumeSend4Source;
+- (void)resumeSend6Source;
+- (void)resumeReceive4Source;
+- (void)resumeReceive6Source;
+- (void)closeSockets;
+
+- (void)maybeConnect;
+- (BOOL)connectWithAddress4:(NSData *)address4 error:(NSError **)errPtr;
+- (BOOL)connectWithAddress6:(NSData *)address6 error:(NSError **)errPtr;
+
+- (void)maybeDequeueSend;
+- (void)doPreSend;
+- (void)doSend;
+- (void)endCurrentSend;
+- (void)setupSendTimerWithTimeout:(NSTimeInterval)timeout;
+
+- (void)doReceive;
+- (void)doReceiveEOF;
+
+- (void)closeWithError:(NSError *)error;
+
+- (BOOL)performMulticastRequest:(int)requestType forGroup:(NSString *)group onInterface:(NSString *)interface error:(NSError **)errPtr;
+
+#if TARGET_OS_IPHONE
+- (BOOL)createReadAndWriteStreams:(NSError **)errPtr;
+- (BOOL)registerForStreamCallbacks:(NSError **)errPtr;
+- (BOOL)addStreamsToRunLoop:(NSError **)errPtr;
+- (BOOL)openStreams:(NSError **)errPtr;
+- (void)removeStreamsFromRunLoop;
+- (void)closeReadAndWriteStreams;
+#endif
+
++ (NSString *)hostFromSockaddr4:(const struct sockaddr_in *)pSockaddr4;
++ (NSString *)hostFromSockaddr6:(const struct sockaddr_in6 *)pSockaddr6;
++ (uint16_t)portFromSockaddr4:(const struct sockaddr_in *)pSockaddr4;
++ (uint16_t)portFromSockaddr6:(const struct sockaddr_in6 *)pSockaddr6;
+
+#if TARGET_OS_IPHONE
+// Forward declaration
++ (void)listenerThread;
+#endif
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * The GCDAsyncUdpSendPacket encompasses the instructions for a single send/write.
+**/
+@interface GCDAsyncUdpSendPacket : NSObject {
+@public
+ NSData *buffer;
+ NSTimeInterval timeout;
+ long tag;
+
+ BOOL resolveInProgress;
+ BOOL filterInProgress;
+
+ NSArray *resolvedAddresses;
+ NSError *resolveError;
+
+ NSData *address;
+ int addressFamily;
+}
+
+- (id)initWithData:(NSData *)d timeout:(NSTimeInterval)t tag:(long)i;
+
+@end
+
+@implementation GCDAsyncUdpSendPacket
+
+- (id)initWithData:(NSData *)d timeout:(NSTimeInterval)t tag:(long)i
+{
+ if ((self = [super init]))
+ {
+ buffer = d;
+ timeout = t;
+ tag = i;
+
+ resolveInProgress = NO;
+ }
+ return self;
+}
+
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+@interface GCDAsyncUdpSpecialPacket : NSObject {
+@public
+// uint8_t type;
+
+ BOOL resolveInProgress;
+
+ NSArray *addresses;
+ NSError *error;
+}
+
+- (id)init;
+
+@end
+
+@implementation GCDAsyncUdpSpecialPacket
+
+- (id)init
+{
+ self = [super init];
+ return self;
+}
+
+
+@end
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark -
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+@implementation GCDAsyncUdpSocket
+
+- (id)init
+{
+ LogTrace();
+
+ return [self initWithDelegate:nil delegateQueue:NULL socketQueue:NULL];
+}
+
+- (id)initWithSocketQueue:(dispatch_queue_t)sq
+{
+ LogTrace();
+
+ return [self initWithDelegate:nil delegateQueue:NULL socketQueue:sq];
+}
+
+- (id)initWithDelegate:(id <GCDAsyncUdpSocketDelegate>)aDelegate delegateQueue:(dispatch_queue_t)dq
+{
+ LogTrace();
+
+ return [self initWithDelegate:aDelegate delegateQueue:dq socketQueue:NULL];
+}
+
+- (id)initWithDelegate:(id <GCDAsyncUdpSocketDelegate>)aDelegate delegateQueue:(dispatch_queue_t)dq socketQueue:(dispatch_queue_t)sq
+{
+ LogTrace();
+
+ if ((self = [super init]))
+ {
+ delegate = aDelegate;
+
+ if (dq)
+ {
+ delegateQueue = dq;
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_retain(delegateQueue);
+ #endif
+ }
+
+ max4ReceiveSize = 9216;
+ max6ReceiveSize = 9216;
+
+ socket4FD = SOCKET_NULL;
+ socket6FD = SOCKET_NULL;
+
+ if (sq)
+ {
+ NSAssert(sq != dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_LOW, 0),
+ @"The given socketQueue parameter must not be a concurrent queue.");
+ NSAssert(sq != dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_HIGH, 0),
+ @"The given socketQueue parameter must not be a concurrent queue.");
+ NSAssert(sq != dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0),
+ @"The given socketQueue parameter must not be a concurrent queue.");
+
+ socketQueue = sq;
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_retain(socketQueue);
+ #endif
+ }
+ else
+ {
+ socketQueue = dispatch_queue_create([GCDAsyncUdpSocketQueueName UTF8String], NULL);
+ }
+
+ // The dispatch_queue_set_specific() and dispatch_get_specific() functions take a "void *key" parameter.
+ // From the documentation:
+ //
+ // > Keys are only compared as pointers and are never dereferenced.
+ // > Thus, you can use a pointer to a static variable for a specific subsystem or
+ // > any other value that allows you to identify the value uniquely.
+ //
+ // We're just going to use the memory address of an ivar.
+ // Specifically an ivar that is explicitly named for our purpose to make the code more readable.
+ //
+ // However, it feels tedious (and less readable) to include the "&" all the time:
+ // dispatch_get_specific(&IsOnSocketQueueOrTargetQueueKey)
+ //
+ // So we're going to make it so it doesn't matter if we use the '&' or not,
+ // by assigning the value of the ivar to the address of the ivar.
+ // Thus: IsOnSocketQueueOrTargetQueueKey == &IsOnSocketQueueOrTargetQueueKey;
+
+ IsOnSocketQueueOrTargetQueueKey = &IsOnSocketQueueOrTargetQueueKey;
+
+ void *nonNullUnusedPointer = (__bridge void *)self;
+ dispatch_queue_set_specific(socketQueue, IsOnSocketQueueOrTargetQueueKey, nonNullUnusedPointer, NULL);
+
+ currentSend = nil;
+ sendQueue = [[NSMutableArray alloc] initWithCapacity:5];
+
+ #if TARGET_OS_IPHONE
+ [[NSNotificationCenter defaultCenter] addObserver:self
+ selector:@selector(applicationWillEnterForeground:)
+ name:UIApplicationWillEnterForegroundNotification
+ object:nil];
+ #endif
+ }
+ return self;
+}
+
+- (void)dealloc
+{
+ LogInfo(@"%@ - %@ (start)", THIS_METHOD, self);
+
+#if TARGET_OS_IPHONE
+ [[NSNotificationCenter defaultCenter] removeObserver:self];
+#endif
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ [self closeWithError:nil];
+ }
+ else
+ {
+ dispatch_sync(socketQueue, ^{
+ [self closeWithError:nil];
+ });
+ }
+
+ delegate = nil;
+ #if !OS_OBJECT_USE_OBJC
+ if (delegateQueue) dispatch_release(delegateQueue);
+ #endif
+ delegateQueue = NULL;
+
+ #if !OS_OBJECT_USE_OBJC
+ if (socketQueue) dispatch_release(socketQueue);
+ #endif
+ socketQueue = NULL;
+
+ LogInfo(@"%@ - %@ (finish)", THIS_METHOD, self);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Configuration
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (id)delegate
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return delegate;
+ }
+ else
+ {
+ __block id result = nil;
+
+ dispatch_sync(socketQueue, ^{
+ result = delegate;
+ });
+
+ return result;
+ }
+}
+
+- (void)setDelegate:(id <GCDAsyncUdpSocketDelegate>)newDelegate synchronously:(BOOL)synchronously
+{
+ dispatch_block_t block = ^{
+ delegate = newDelegate;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey)) {
+ block();
+ }
+ else {
+ if (synchronously)
+ dispatch_sync(socketQueue, block);
+ else
+ dispatch_async(socketQueue, block);
+ }
+}
+
+- (void)setDelegate:(id <GCDAsyncUdpSocketDelegate>)newDelegate
+{
+ [self setDelegate:newDelegate synchronously:NO];
+}
+
+- (void)synchronouslySetDelegate:(id <GCDAsyncUdpSocketDelegate>)newDelegate
+{
+ [self setDelegate:newDelegate synchronously:YES];
+}
+
+- (dispatch_queue_t)delegateQueue
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ return delegateQueue;
+ }
+ else
+ {
+ __block dispatch_queue_t result = NULL;
+
+ dispatch_sync(socketQueue, ^{
+ result = delegateQueue;
+ });
+
+ return result;
+ }
+}
+
+- (void)setDelegateQueue:(dispatch_queue_t)newDelegateQueue synchronously:(BOOL)synchronously
+{
+ dispatch_block_t block = ^{
+
+ #if !OS_OBJECT_USE_OBJC
+ if (delegateQueue) dispatch_release(delegateQueue);
+ if (newDelegateQueue) dispatch_retain(newDelegateQueue);
+ #endif
+
+ delegateQueue = newDelegateQueue;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey)) {
+ block();
+ }
+ else {
+ if (synchronously)
+ dispatch_sync(socketQueue, block);
+ else
+ dispatch_async(socketQueue, block);
+ }
+}
+
+- (void)setDelegateQueue:(dispatch_queue_t)newDelegateQueue
+{
+ [self setDelegateQueue:newDelegateQueue synchronously:NO];
+}
+
+- (void)synchronouslySetDelegateQueue:(dispatch_queue_t)newDelegateQueue
+{
+ [self setDelegateQueue:newDelegateQueue synchronously:YES];
+}
+
+- (void)getDelegate:(id <GCDAsyncUdpSocketDelegate> *)delegatePtr delegateQueue:(dispatch_queue_t *)delegateQueuePtr
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ if (delegatePtr) *delegatePtr = delegate;
+ if (delegateQueuePtr) *delegateQueuePtr = delegateQueue;
+ }
+ else
+ {
+ __block id dPtr = NULL;
+ __block dispatch_queue_t dqPtr = NULL;
+
+ dispatch_sync(socketQueue, ^{
+ dPtr = delegate;
+ dqPtr = delegateQueue;
+ });
+
+ if (delegatePtr) *delegatePtr = dPtr;
+ if (delegateQueuePtr) *delegateQueuePtr = dqPtr;
+ }
+}
+
+- (void)setDelegate:(id <GCDAsyncUdpSocketDelegate>)newDelegate delegateQueue:(dispatch_queue_t)newDelegateQueue synchronously:(BOOL)synchronously
+{
+ dispatch_block_t block = ^{
+
+ delegate = newDelegate;
+
+ #if !OS_OBJECT_USE_OBJC
+ if (delegateQueue) dispatch_release(delegateQueue);
+ if (newDelegateQueue) dispatch_retain(newDelegateQueue);
+ #endif
+
+ delegateQueue = newDelegateQueue;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey)) {
+ block();
+ }
+ else {
+ if (synchronously)
+ dispatch_sync(socketQueue, block);
+ else
+ dispatch_async(socketQueue, block);
+ }
+}
+
+- (void)setDelegate:(id <GCDAsyncUdpSocketDelegate>)newDelegate delegateQueue:(dispatch_queue_t)newDelegateQueue
+{
+ [self setDelegate:newDelegate delegateQueue:newDelegateQueue synchronously:NO];
+}
+
+- (void)synchronouslySetDelegate:(id <GCDAsyncUdpSocketDelegate>)newDelegate delegateQueue:(dispatch_queue_t)newDelegateQueue
+{
+ [self setDelegate:newDelegate delegateQueue:newDelegateQueue synchronously:YES];
+}
+
+- (BOOL)isIPv4Enabled
+{
+ // Note: YES means kIPv4Disabled is OFF
+
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+
+ result = ((config & kIPv4Disabled) == 0);
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (void)setIPv4Enabled:(BOOL)flag
+{
+ // Note: YES means kIPv4Disabled is OFF
+
+ dispatch_block_t block = ^{
+
+ LogVerbose(@"%@ %@", THIS_METHOD, (flag ? @"YES" : @"NO"));
+
+ if (flag)
+ config &= ~kIPv4Disabled;
+ else
+ config |= kIPv4Disabled;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (BOOL)isIPv6Enabled
+{
+ // Note: YES means kIPv6Disabled is OFF
+
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+
+ result = ((config & kIPv6Disabled) == 0);
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (void)setIPv6Enabled:(BOOL)flag
+{
+ // Note: YES means kIPv6Disabled is OFF
+
+ dispatch_block_t block = ^{
+
+ LogVerbose(@"%@ %@", THIS_METHOD, (flag ? @"YES" : @"NO"));
+
+ if (flag)
+ config &= ~kIPv6Disabled;
+ else
+ config |= kIPv6Disabled;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (BOOL)isIPv4Preferred
+{
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+ result = (config & kPreferIPv4) ? YES : NO;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (BOOL)isIPv6Preferred
+{
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+ result = (config & kPreferIPv6) ? YES : NO;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (BOOL)isIPVersionNeutral
+{
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+ result = (config & (kPreferIPv4 | kPreferIPv6)) == 0;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (void)setPreferIPv4
+{
+ dispatch_block_t block = ^{
+
+ LogTrace();
+
+ config |= kPreferIPv4;
+ config &= ~kPreferIPv6;
+
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (void)setPreferIPv6
+{
+ dispatch_block_t block = ^{
+
+ LogTrace();
+
+ config &= ~kPreferIPv4;
+ config |= kPreferIPv6;
+
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (void)setIPVersionNeutral
+{
+ dispatch_block_t block = ^{
+
+ LogTrace();
+
+ config &= ~kPreferIPv4;
+ config &= ~kPreferIPv6;
+
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (uint16_t)maxReceiveIPv4BufferSize
+{
+ __block uint16_t result = 0;
+
+ dispatch_block_t block = ^{
+
+ result = max4ReceiveSize;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (void)setMaxReceiveIPv4BufferSize:(uint16_t)max
+{
+ dispatch_block_t block = ^{
+
+ LogVerbose(@"%@ %u", THIS_METHOD, (unsigned)max);
+
+ max4ReceiveSize = max;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (uint32_t)maxReceiveIPv6BufferSize
+{
+ __block uint32_t result = 0;
+
+ dispatch_block_t block = ^{
+
+ result = max6ReceiveSize;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (void)setMaxReceiveIPv6BufferSize:(uint32_t)max
+{
+ dispatch_block_t block = ^{
+
+ LogVerbose(@"%@ %u", THIS_METHOD, (unsigned)max);
+
+ max6ReceiveSize = max;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+
+- (id)userData
+{
+ __block id result = nil;
+
+ dispatch_block_t block = ^{
+
+ result = userData;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (void)setUserData:(id)arbitraryUserData
+{
+ dispatch_block_t block = ^{
+
+ if (userData != arbitraryUserData)
+ {
+ userData = arbitraryUserData;
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Delegate Helpers
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (void)notifyDidConnectToAddress:(NSData *)anAddress
+{
+ LogTrace();
+
+ __strong id theDelegate = delegate;
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(udpSocket:didConnectToAddress:)])
+ {
+ NSData *address = [anAddress copy]; // In case param is NSMutableData
+
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate udpSocket:self didConnectToAddress:address];
+ }});
+ }
+}
+
+- (void)notifyDidNotConnect:(NSError *)error
+{
+ LogTrace();
+
+ __strong id theDelegate = delegate;
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(udpSocket:didNotConnect:)])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate udpSocket:self didNotConnect:error];
+ }});
+ }
+}
+
+- (void)notifyDidSendDataWithTag:(long)tag
+{
+ LogTrace();
+
+ __strong id theDelegate = delegate;
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(udpSocket:didSendDataWithTag:)])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate udpSocket:self didSendDataWithTag:tag];
+ }});
+ }
+}
+
+- (void)notifyDidNotSendDataWithTag:(long)tag dueToError:(NSError *)error
+{
+ LogTrace();
+
+ __strong id theDelegate = delegate;
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(udpSocket:didNotSendDataWithTag:dueToError:)])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate udpSocket:self didNotSendDataWithTag:tag dueToError:error];
+ }});
+ }
+}
+
+- (void)notifyDidReceiveData:(NSData *)data fromAddress:(NSData *)address withFilterContext:(id)context
+{
+ LogTrace();
+
+ SEL selector = @selector(udpSocket:didReceiveData:fromAddress:withFilterContext:);
+
+ __strong id theDelegate = delegate;
+ if (delegateQueue && [theDelegate respondsToSelector:selector])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate udpSocket:self didReceiveData:data fromAddress:address withFilterContext:context];
+ }});
+ }
+}
+
+- (void)notifyDidCloseWithError:(NSError *)error
+{
+ LogTrace();
+
+ __strong id theDelegate = delegate;
+ if (delegateQueue && [theDelegate respondsToSelector:@selector(udpSocketDidClose:withError:)])
+ {
+ dispatch_async(delegateQueue, ^{ @autoreleasepool {
+
+ [theDelegate udpSocketDidClose:self withError:error];
+ }});
+ }
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Errors
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (NSError *)badConfigError:(NSString *)errMsg
+{
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncUdpSocketErrorDomain
+ code:GCDAsyncUdpSocketBadConfigError
+ userInfo:userInfo];
+}
+
+- (NSError *)badParamError:(NSString *)errMsg
+{
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncUdpSocketErrorDomain
+ code:GCDAsyncUdpSocketBadParamError
+ userInfo:userInfo];
+}
+
+- (NSError *)gaiError:(int)gai_error
+{
+ NSString *errMsg = [NSString stringWithCString:gai_strerror(gai_error) encoding:NSASCIIStringEncoding];
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:@"kCFStreamErrorDomainNetDB" code:gai_error userInfo:userInfo];
+}
+
+- (NSError *)errnoErrorWithReason:(NSString *)reason
+{
+ NSString *errMsg = [NSString stringWithUTF8String:strerror(errno)];
+ NSDictionary *userInfo;
+
+ if (reason)
+ userInfo = [NSDictionary dictionaryWithObjectsAndKeys:errMsg, NSLocalizedDescriptionKey,
+ reason, NSLocalizedFailureReasonErrorKey, nil];
+ else
+ userInfo = [NSDictionary dictionaryWithObjectsAndKeys:errMsg, NSLocalizedDescriptionKey, nil];
+
+ return [NSError errorWithDomain:NSPOSIXErrorDomain code:errno userInfo:userInfo];
+}
+
+- (NSError *)errnoError
+{
+ return [self errnoErrorWithReason:nil];
+}
+
+/**
+ * Returns a standard send timeout error.
+**/
+- (NSError *)sendTimeoutError
+{
+ NSString *errMsg = NSLocalizedStringWithDefaultValue(@"GCDAsyncUdpSocketSendTimeoutError",
+ @"GCDAsyncUdpSocket", [NSBundle mainBundle],
+ @"Send operation timed out", nil);
+
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncUdpSocketErrorDomain
+ code:GCDAsyncUdpSocketSendTimeoutError
+ userInfo:userInfo];
+}
+
+- (NSError *)socketClosedError
+{
+ NSString *errMsg = NSLocalizedStringWithDefaultValue(@"GCDAsyncUdpSocketClosedError",
+ @"GCDAsyncUdpSocket", [NSBundle mainBundle],
+ @"Socket closed", nil);
+
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncUdpSocketErrorDomain code:GCDAsyncUdpSocketClosedError userInfo:userInfo];
+}
+
+- (NSError *)otherError:(NSString *)errMsg
+{
+ NSDictionary *userInfo = [NSDictionary dictionaryWithObject:errMsg forKey:NSLocalizedDescriptionKey];
+
+ return [NSError errorWithDomain:GCDAsyncUdpSocketErrorDomain
+ code:GCDAsyncUdpSocketOtherError
+ userInfo:userInfo];
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Utilities
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (BOOL)preOp:(NSError **)errPtr
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ if (delegate == nil) // Must have delegate set
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Attempting to use socket without a delegate. Set a delegate first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ if (delegateQueue == NULL) // Must have delegate queue set
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Attempting to use socket without a delegate queue. Set a delegate queue first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ return YES;
+}
+
+/**
+ * This method executes on a global concurrent queue.
+ * When complete, it executes the given completion block on the socketQueue.
+**/
+- (void)asyncResolveHost:(NSString *)aHost
+ port:(uint16_t)port
+ withCompletionBlock:(void (^)(NSArray *addresses, NSError *error))completionBlock
+{
+ LogTrace();
+
+ // Check parameter(s)
+
+ if (aHost == nil)
+ {
+ NSString *msg = @"The host param is nil. Should be domain name or IP address string.";
+ NSError *error = [self badParamError:msg];
+
+ // We should still use dispatch_async since this method is expected to be asynchronous
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ completionBlock(nil, error);
+ }});
+
+ return;
+ }
+
+ // It's possible that the given aHost parameter is actually a NSMutableString.
+ // So we want to copy it now, within this block that will be executed synchronously.
+ // This way the asynchronous lookup block below doesn't have to worry about it changing.
+
+ NSString *host = [aHost copy];
+
+
+ dispatch_queue_t globalConcurrentQueue = dispatch_get_global_queue(DISPATCH_QUEUE_PRIORITY_DEFAULT, 0);
+ dispatch_async(globalConcurrentQueue, ^{ @autoreleasepool {
+
+ NSMutableArray *addresses = [NSMutableArray arrayWithCapacity:2];
+ NSError *error = nil;
+
+ if ([host isEqualToString:@"localhost"] || [host isEqualToString:@"loopback"])
+ {
+ // Use LOOPBACK address
+ struct sockaddr_in sockaddr4;
+ memset(&sockaddr4, 0, sizeof(sockaddr4));
+
+ sockaddr4.sin_len = sizeof(struct sockaddr_in);
+ sockaddr4.sin_family = AF_INET;
+ sockaddr4.sin_port = htons(port);
+ sockaddr4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+
+ struct sockaddr_in6 sockaddr6;
+ memset(&sockaddr6, 0, sizeof(sockaddr6));
+
+ sockaddr6.sin6_len = sizeof(struct sockaddr_in6);
+ sockaddr6.sin6_family = AF_INET6;
+ sockaddr6.sin6_port = htons(port);
+ sockaddr6.sin6_addr = in6addr_loopback;
+
+ // Wrap the native address structures and add to list
+ [addresses addObject:[NSData dataWithBytes:&sockaddr4 length:sizeof(sockaddr4)]];
+ [addresses addObject:[NSData dataWithBytes:&sockaddr6 length:sizeof(sockaddr6)]];
+ }
+ else
+ {
+ NSString *portStr = [NSString stringWithFormat:@"%hu", port];
+
+ struct addrinfo hints, *res, *res0;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_protocol = IPPROTO_UDP;
+
+ int gai_error = getaddrinfo([host UTF8String], [portStr UTF8String], &hints, &res0);
+
+ if (gai_error)
+ {
+ error = [self gaiError:gai_error];
+ }
+ else
+ {
+ for(res = res0; res; res = res->ai_next)
+ {
+ if (res->ai_family == AF_INET)
+ {
+ // Found IPv4 address
+ // Wrap the native address structure and add to list
+
+ [addresses addObject:[NSData dataWithBytes:res->ai_addr length:res->ai_addrlen]];
+ }
+ else if (res->ai_family == AF_INET6)
+ {
+ // Found IPv6 address
+ // Wrap the native address structure and add to list
+
+ [addresses addObject:[NSData dataWithBytes:res->ai_addr length:res->ai_addrlen]];
+ }
+ }
+ freeaddrinfo(res0);
+
+ if ([addresses count] == 0)
+ {
+ error = [self gaiError:EAI_FAIL];
+ }
+ }
+ }
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ completionBlock(addresses, error);
+ }});
+
+ }});
+}
+
+/**
+ * This method picks an address from the given list of addresses.
+ * The address picked depends upon which protocols are disabled, deactived, & preferred.
+ *
+ * Returns the address family (AF_INET or AF_INET6) of the picked address,
+ * or AF_UNSPEC and the corresponding error is there's a problem.
+**/
+- (int)getAddress:(NSData **)addressPtr error:(NSError **)errorPtr fromAddresses:(NSArray *)addresses
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert([addresses count] > 0, @"Expected at least one address");
+
+ int resultAF = AF_UNSPEC;
+ NSData *resultAddress = nil;
+ NSError *resultError = nil;
+
+ // Check for problems
+
+ BOOL resolvedIPv4Address = NO;
+ BOOL resolvedIPv6Address = NO;
+
+ for (NSData *address in addresses)
+ {
+ switch ([[self class] familyFromAddress:address])
+ {
+ case AF_INET : resolvedIPv4Address = YES; break;
+ case AF_INET6 : resolvedIPv6Address = YES; break;
+
+ default : NSAssert(NO, @"Addresses array contains invalid address");
+ }
+ }
+
+ BOOL isIPv4Disabled = (config & kIPv4Disabled) ? YES : NO;
+ BOOL isIPv6Disabled = (config & kIPv6Disabled) ? YES : NO;
+
+ if (isIPv4Disabled && !resolvedIPv6Address)
+ {
+ NSString *msg = @"IPv4 has been disabled and DNS lookup found no IPv6 address(es).";
+ resultError = [self otherError:msg];
+
+ if (addressPtr) *addressPtr = resultAddress;
+ if (errorPtr) *errorPtr = resultError;
+
+ return resultAF;
+ }
+
+ if (isIPv6Disabled && !resolvedIPv4Address)
+ {
+ NSString *msg = @"IPv6 has been disabled and DNS lookup found no IPv4 address(es).";
+ resultError = [self otherError:msg];
+
+ if (addressPtr) *addressPtr = resultAddress;
+ if (errorPtr) *errorPtr = resultError;
+
+ return resultAF;
+ }
+
+ BOOL isIPv4Deactivated = (flags & kIPv4Deactivated) ? YES : NO;
+ BOOL isIPv6Deactivated = (flags & kIPv6Deactivated) ? YES : NO;
+
+ if (isIPv4Deactivated && !resolvedIPv6Address)
+ {
+ NSString *msg = @"IPv4 has been deactivated due to bind/connect, and DNS lookup found no IPv6 address(es).";
+ resultError = [self otherError:msg];
+
+ if (addressPtr) *addressPtr = resultAddress;
+ if (errorPtr) *errorPtr = resultError;
+
+ return resultAF;
+ }
+
+ if (isIPv6Deactivated && !resolvedIPv4Address)
+ {
+ NSString *msg = @"IPv6 has been deactivated due to bind/connect, and DNS lookup found no IPv4 address(es).";
+ resultError = [self otherError:msg];
+
+ if (addressPtr) *addressPtr = resultAddress;
+ if (errorPtr) *errorPtr = resultError;
+
+ return resultAF;
+ }
+
+ // Extract first IPv4 and IPv6 address in list
+
+ BOOL ipv4WasFirstInList = YES;
+ NSData *address4 = nil;
+ NSData *address6 = nil;
+
+ for (NSData *address in addresses)
+ {
+ int af = [[self class] familyFromAddress:address];
+
+ if (af == AF_INET)
+ {
+ if (address4 == nil)
+ {
+ address4 = address;
+
+ if (address6)
+ break;
+ else
+ ipv4WasFirstInList = YES;
+ }
+ }
+ else // af == AF_INET6
+ {
+ if (address6 == nil)
+ {
+ address6 = address;
+
+ if (address4)
+ break;
+ else
+ ipv4WasFirstInList = NO;
+ }
+ }
+ }
+
+ // Determine socket type
+
+ BOOL preferIPv4 = (config & kPreferIPv4) ? YES : NO;
+ BOOL preferIPv6 = (config & kPreferIPv6) ? YES : NO;
+
+ BOOL useIPv4 = ((preferIPv4 && address4) || (address6 == nil));
+ BOOL useIPv6 = ((preferIPv6 && address6) || (address4 == nil));
+
+ NSAssert(!(preferIPv4 && preferIPv6), @"Invalid config state");
+ NSAssert(!(useIPv4 && useIPv6), @"Invalid logic");
+
+ if (useIPv4 || (!useIPv6 && ipv4WasFirstInList))
+ {
+ resultAF = AF_INET;
+ resultAddress = address4;
+ }
+ else
+ {
+ resultAF = AF_INET6;
+ resultAddress = address6;
+ }
+
+ if (addressPtr) *addressPtr = resultAddress;
+ if (errorPtr) *errorPtr = resultError;
+
+ return resultAF;
+}
+
+/**
+ * Finds the address(es) of an interface description.
+ * An inteface description may be an interface name (en0, en1, lo0) or corresponding IP (192.168.4.34).
+**/
+- (void)convertIntefaceDescription:(NSString *)interfaceDescription
+ port:(uint16_t)port
+ intoAddress4:(NSData **)interfaceAddr4Ptr
+ address6:(NSData **)interfaceAddr6Ptr
+{
+ NSData *addr4 = nil;
+ NSData *addr6 = nil;
+
+ if (interfaceDescription == nil)
+ {
+ // ANY address
+
+ struct sockaddr_in sockaddr4;
+ memset(&sockaddr4, 0, sizeof(sockaddr4));
+
+ sockaddr4.sin_len = sizeof(sockaddr4);
+ sockaddr4.sin_family = AF_INET;
+ sockaddr4.sin_port = htons(port);
+ sockaddr4.sin_addr.s_addr = htonl(INADDR_ANY);
+
+ struct sockaddr_in6 sockaddr6;
+ memset(&sockaddr6, 0, sizeof(sockaddr6));
+
+ sockaddr6.sin6_len = sizeof(sockaddr6);
+ sockaddr6.sin6_family = AF_INET6;
+ sockaddr6.sin6_port = htons(port);
+ sockaddr6.sin6_addr = in6addr_any;
+
+ addr4 = [NSData dataWithBytes:&sockaddr4 length:sizeof(sockaddr4)];
+ addr6 = [NSData dataWithBytes:&sockaddr6 length:sizeof(sockaddr6)];
+ }
+ else if ([interfaceDescription isEqualToString:@"localhost"] ||
+ [interfaceDescription isEqualToString:@"loopback"])
+ {
+ // LOOPBACK address
+
+ struct sockaddr_in sockaddr4;
+ memset(&sockaddr4, 0, sizeof(sockaddr4));
+
+ sockaddr4.sin_len = sizeof(struct sockaddr_in);
+ sockaddr4.sin_family = AF_INET;
+ sockaddr4.sin_port = htons(port);
+ sockaddr4.sin_addr.s_addr = htonl(INADDR_LOOPBACK);
+
+ struct sockaddr_in6 sockaddr6;
+ memset(&sockaddr6, 0, sizeof(sockaddr6));
+
+ sockaddr6.sin6_len = sizeof(struct sockaddr_in6);
+ sockaddr6.sin6_family = AF_INET6;
+ sockaddr6.sin6_port = htons(port);
+ sockaddr6.sin6_addr = in6addr_loopback;
+
+ addr4 = [NSData dataWithBytes:&sockaddr4 length:sizeof(sockaddr4)];
+ addr6 = [NSData dataWithBytes:&sockaddr6 length:sizeof(sockaddr6)];
+ }
+ else
+ {
+ const char *iface = [interfaceDescription UTF8String];
+
+ struct ifaddrs *addrs;
+ const struct ifaddrs *cursor;
+
+ if ((getifaddrs(&addrs) == 0))
+ {
+ cursor = addrs;
+ while (cursor != NULL)
+ {
+ if ((addr4 == nil) && (cursor->ifa_addr->sa_family == AF_INET))
+ {
+ // IPv4
+
+ struct sockaddr_in *addr = (struct sockaddr_in *)cursor->ifa_addr;
+
+ if (strcmp(cursor->ifa_name, iface) == 0)
+ {
+ // Name match
+
+ struct sockaddr_in nativeAddr4 = *addr;
+ nativeAddr4.sin_port = htons(port);
+
+ addr4 = [NSData dataWithBytes:&nativeAddr4 length:sizeof(nativeAddr4)];
+ }
+ else
+ {
+ char ip[INET_ADDRSTRLEN];
+
+ const char *conversion;
+ conversion = inet_ntop(AF_INET, &addr->sin_addr, ip, sizeof(ip));
+
+ if ((conversion != NULL) && (strcmp(ip, iface) == 0))
+ {
+ // IP match
+
+ struct sockaddr_in nativeAddr4 = *addr;
+ nativeAddr4.sin_port = htons(port);
+
+ addr4 = [NSData dataWithBytes:&nativeAddr4 length:sizeof(nativeAddr4)];
+ }
+ }
+ }
+ else if ((addr6 == nil) && (cursor->ifa_addr->sa_family == AF_INET6))
+ {
+ // IPv6
+
+ struct sockaddr_in6 *addr = (struct sockaddr_in6 *)cursor->ifa_addr;
+
+ if (strcmp(cursor->ifa_name, iface) == 0)
+ {
+ // Name match
+
+ struct sockaddr_in6 nativeAddr6 = *addr;
+ nativeAddr6.sin6_port = htons(port);
+
+ addr6 = [NSData dataWithBytes:&nativeAddr6 length:sizeof(nativeAddr6)];
+ }
+ else
+ {
+ char ip[INET6_ADDRSTRLEN];
+
+ const char *conversion;
+ conversion = inet_ntop(AF_INET6, &addr->sin6_addr, ip, sizeof(ip));
+
+ if ((conversion != NULL) && (strcmp(ip, iface) == 0))
+ {
+ // IP match
+
+ struct sockaddr_in6 nativeAddr6 = *addr;
+ nativeAddr6.sin6_port = htons(port);
+
+ addr6 = [NSData dataWithBytes:&nativeAddr6 length:sizeof(nativeAddr6)];
+ }
+ }
+ }
+
+ cursor = cursor->ifa_next;
+ }
+
+ freeifaddrs(addrs);
+ }
+ }
+
+ if (interfaceAddr4Ptr) *interfaceAddr4Ptr = addr4;
+ if (interfaceAddr6Ptr) *interfaceAddr6Ptr = addr6;
+}
+
+/**
+ * Converts a numeric hostname into its corresponding address.
+ * The hostname is expected to be an IPv4 or IPv6 address represented as a human-readable string. (e.g. 192.168.4.34)
+**/
+- (void)convertNumericHost:(NSString *)numericHost
+ port:(uint16_t)port
+ intoAddress4:(NSData **)addr4Ptr
+ address6:(NSData **)addr6Ptr
+{
+ NSData *addr4 = nil;
+ NSData *addr6 = nil;
+
+ if (numericHost)
+ {
+ NSString *portStr = [NSString stringWithFormat:@"%hu", port];
+
+ struct addrinfo hints, *res, *res0;
+
+ memset(&hints, 0, sizeof(hints));
+ hints.ai_family = PF_UNSPEC;
+ hints.ai_socktype = SOCK_DGRAM;
+ hints.ai_protocol = IPPROTO_UDP;
+ hints.ai_flags = AI_NUMERICHOST; // No name resolution should be attempted
+
+ if (getaddrinfo([numericHost UTF8String], [portStr UTF8String], &hints, &res0) == 0)
+ {
+ for (res = res0; res; res = res->ai_next)
+ {
+ if ((addr4 == nil) && (res->ai_family == AF_INET))
+ {
+ // Found IPv4 address
+ // Wrap the native address structure
+ addr4 = [NSData dataWithBytes:res->ai_addr length:res->ai_addrlen];
+ }
+ else if ((addr6 == nil) && (res->ai_family == AF_INET6))
+ {
+ // Found IPv6 address
+ // Wrap the native address structure
+ addr6 = [NSData dataWithBytes:res->ai_addr length:res->ai_addrlen];
+ }
+ }
+ freeaddrinfo(res0);
+ }
+ }
+
+ if (addr4Ptr) *addr4Ptr = addr4;
+ if (addr6Ptr) *addr6Ptr = addr6;
+}
+
+- (BOOL)isConnectedToAddress4:(NSData *)someAddr4
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert(flags & kDidConnect, @"Not connected");
+ NSAssert(cachedConnectedAddress, @"Expected cached connected address");
+
+ if (cachedConnectedFamily != AF_INET)
+ {
+ return NO;
+ }
+
+ const struct sockaddr_in *sSockaddr4 = (struct sockaddr_in *)[someAddr4 bytes];
+ const struct sockaddr_in *cSockaddr4 = (struct sockaddr_in *)[cachedConnectedAddress bytes];
+
+ if (memcmp(&sSockaddr4->sin_addr, &cSockaddr4->sin_addr, sizeof(struct in_addr)) != 0)
+ {
+ return NO;
+ }
+ if (memcmp(&sSockaddr4->sin_port, &cSockaddr4->sin_port, sizeof(in_port_t)) != 0)
+ {
+ return NO;
+ }
+
+ return YES;
+}
+
+- (BOOL)isConnectedToAddress6:(NSData *)someAddr6
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert(flags & kDidConnect, @"Not connected");
+ NSAssert(cachedConnectedAddress, @"Expected cached connected address");
+
+ if (cachedConnectedFamily != AF_INET6)
+ {
+ return NO;
+ }
+
+ const struct sockaddr_in6 *sSockaddr6 = (struct sockaddr_in6 *)[someAddr6 bytes];
+ const struct sockaddr_in6 *cSockaddr6 = (struct sockaddr_in6 *)[cachedConnectedAddress bytes];
+
+ if (memcmp(&sSockaddr6->sin6_addr, &cSockaddr6->sin6_addr, sizeof(struct in6_addr)) != 0)
+ {
+ return NO;
+ }
+ if (memcmp(&sSockaddr6->sin6_port, &cSockaddr6->sin6_port, sizeof(in_port_t)) != 0)
+ {
+ return NO;
+ }
+
+ return YES;
+}
+
+- (unsigned int)indexOfInterfaceAddr4:(NSData *)interfaceAddr4
+{
+ if (interfaceAddr4 == nil)
+ return 0;
+ if ([interfaceAddr4 length] != sizeof(struct sockaddr_in))
+ return 0;
+
+ int result = 0;
+ struct sockaddr_in *ifaceAddr = (struct sockaddr_in *)[interfaceAddr4 bytes];
+
+ struct ifaddrs *addrs;
+ const struct ifaddrs *cursor;
+
+ if ((getifaddrs(&addrs) == 0))
+ {
+ cursor = addrs;
+ while (cursor != NULL)
+ {
+ if (cursor->ifa_addr->sa_family == AF_INET)
+ {
+ // IPv4
+
+ struct sockaddr_in *addr = (struct sockaddr_in *)cursor->ifa_addr;
+
+ if (memcmp(&addr->sin_addr, &ifaceAddr->sin_addr, sizeof(struct in_addr)) == 0)
+ {
+ result = if_nametoindex(cursor->ifa_name);
+ break;
+ }
+ }
+
+ cursor = cursor->ifa_next;
+ }
+
+ freeifaddrs(addrs);
+ }
+
+ return result;
+}
+
+- (unsigned int)indexOfInterfaceAddr6:(NSData *)interfaceAddr6
+{
+ if (interfaceAddr6 == nil)
+ return 0;
+ if ([interfaceAddr6 length] != sizeof(struct sockaddr_in6))
+ return 0;
+
+ int result = 0;
+ struct sockaddr_in6 *ifaceAddr = (struct sockaddr_in6 *)[interfaceAddr6 bytes];
+
+ struct ifaddrs *addrs;
+ const struct ifaddrs *cursor;
+
+ if ((getifaddrs(&addrs) == 0))
+ {
+ cursor = addrs;
+ while (cursor != NULL)
+ {
+ if (cursor->ifa_addr->sa_family == AF_INET6)
+ {
+ // IPv6
+
+ struct sockaddr_in6 *addr = (struct sockaddr_in6 *)cursor->ifa_addr;
+
+ if (memcmp(&addr->sin6_addr, &ifaceAddr->sin6_addr, sizeof(struct in6_addr)) == 0)
+ {
+ result = if_nametoindex(cursor->ifa_name);
+ break;
+ }
+ }
+
+ cursor = cursor->ifa_next;
+ }
+
+ freeifaddrs(addrs);
+ }
+
+ return result;
+}
+
+- (void)setupSendAndReceiveSourcesForSocket4
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ send4Source = dispatch_source_create(DISPATCH_SOURCE_TYPE_WRITE, socket4FD, 0, socketQueue);
+ receive4Source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, socket4FD, 0, socketQueue);
+
+ // Setup event handlers
+
+ dispatch_source_set_event_handler(send4Source, ^{ @autoreleasepool {
+
+ LogVerbose(@"send4EventBlock");
+ LogVerbose(@"dispatch_source_get_data(send4Source) = %lu", dispatch_source_get_data(send4Source));
+
+ flags |= kSock4CanAcceptBytes;
+
+ // If we're ready to send data, do so immediately.
+ // Otherwise pause the send source or it will continue to fire over and over again.
+
+ if (currentSend == nil)
+ {
+ LogVerbose(@"Nothing to send");
+ [self suspendSend4Source];
+ }
+ else if (currentSend->resolveInProgress)
+ {
+ LogVerbose(@"currentSend - waiting for address resolve");
+ [self suspendSend4Source];
+ }
+ else if (currentSend->filterInProgress)
+ {
+ LogVerbose(@"currentSend - waiting on sendFilter");
+ [self suspendSend4Source];
+ }
+ else
+ {
+ [self doSend];
+ }
+
+ }});
+
+ dispatch_source_set_event_handler(receive4Source, ^{ @autoreleasepool {
+
+ LogVerbose(@"receive4EventBlock");
+
+ socket4FDBytesAvailable = dispatch_source_get_data(receive4Source);
+ LogVerbose(@"socket4FDBytesAvailable: %lu", socket4FDBytesAvailable);
+
+ if (socket4FDBytesAvailable > 0)
+ [self doReceive];
+ else
+ [self doReceiveEOF];
+
+ }});
+
+ // Setup cancel handlers
+
+ __block int socketFDRefCount = 2;
+
+ int theSocketFD = socket4FD;
+
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_source_t theSendSource = send4Source;
+ dispatch_source_t theReceiveSource = receive4Source;
+ #endif
+
+ dispatch_source_set_cancel_handler(send4Source, ^{
+
+ LogVerbose(@"send4CancelBlock");
+
+ #if !OS_OBJECT_USE_OBJC
+ LogVerbose(@"dispatch_release(send4Source)");
+ dispatch_release(theSendSource);
+ #endif
+
+ if (--socketFDRefCount == 0)
+ {
+ LogVerbose(@"close(socket4FD)");
+ close(theSocketFD);
+ }
+ });
+
+ dispatch_source_set_cancel_handler(receive4Source, ^{
+
+ LogVerbose(@"receive4CancelBlock");
+
+ #if !OS_OBJECT_USE_OBJC
+ LogVerbose(@"dispatch_release(receive4Source)");
+ dispatch_release(theReceiveSource);
+ #endif
+
+ if (--socketFDRefCount == 0)
+ {
+ LogVerbose(@"close(socket4FD)");
+ close(theSocketFD);
+ }
+ });
+
+ // We will not be able to receive until the socket is bound to a port,
+ // either explicitly via bind, or implicitly by connect or by sending data.
+ //
+ // But we should be able to send immediately.
+
+ socket4FDBytesAvailable = 0;
+ flags |= kSock4CanAcceptBytes;
+
+ flags |= kSend4SourceSuspended;
+ flags |= kReceive4SourceSuspended;
+}
+
+- (void)setupSendAndReceiveSourcesForSocket6
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ send6Source = dispatch_source_create(DISPATCH_SOURCE_TYPE_WRITE, socket6FD, 0, socketQueue);
+ receive6Source = dispatch_source_create(DISPATCH_SOURCE_TYPE_READ, socket6FD, 0, socketQueue);
+
+ // Setup event handlers
+
+ dispatch_source_set_event_handler(send6Source, ^{ @autoreleasepool {
+
+ LogVerbose(@"send6EventBlock");
+ LogVerbose(@"dispatch_source_get_data(send6Source) = %lu", dispatch_source_get_data(send6Source));
+
+ flags |= kSock6CanAcceptBytes;
+
+ // If we're ready to send data, do so immediately.
+ // Otherwise pause the send source or it will continue to fire over and over again.
+
+ if (currentSend == nil)
+ {
+ LogVerbose(@"Nothing to send");
+ [self suspendSend6Source];
+ }
+ else if (currentSend->resolveInProgress)
+ {
+ LogVerbose(@"currentSend - waiting for address resolve");
+ [self suspendSend6Source];
+ }
+ else if (currentSend->filterInProgress)
+ {
+ LogVerbose(@"currentSend - waiting on sendFilter");
+ [self suspendSend6Source];
+ }
+ else
+ {
+ [self doSend];
+ }
+
+ }});
+
+ dispatch_source_set_event_handler(receive6Source, ^{ @autoreleasepool {
+
+ LogVerbose(@"receive6EventBlock");
+
+ socket6FDBytesAvailable = dispatch_source_get_data(receive6Source);
+ LogVerbose(@"socket6FDBytesAvailable: %lu", socket6FDBytesAvailable);
+
+ if (socket6FDBytesAvailable > 0)
+ [self doReceive];
+ else
+ [self doReceiveEOF];
+
+ }});
+
+ // Setup cancel handlers
+
+ __block int socketFDRefCount = 2;
+
+ int theSocketFD = socket6FD;
+
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_source_t theSendSource = send6Source;
+ dispatch_source_t theReceiveSource = receive6Source;
+ #endif
+
+ dispatch_source_set_cancel_handler(send6Source, ^{
+
+ LogVerbose(@"send6CancelBlock");
+
+ #if !OS_OBJECT_USE_OBJC
+ LogVerbose(@"dispatch_release(send6Source)");
+ dispatch_release(theSendSource);
+ #endif
+
+ if (--socketFDRefCount == 0)
+ {
+ LogVerbose(@"close(socket6FD)");
+ close(theSocketFD);
+ }
+ });
+
+ dispatch_source_set_cancel_handler(receive6Source, ^{
+
+ LogVerbose(@"receive6CancelBlock");
+
+ #if !OS_OBJECT_USE_OBJC
+ LogVerbose(@"dispatch_release(receive6Source)");
+ dispatch_release(theReceiveSource);
+ #endif
+
+ if (--socketFDRefCount == 0)
+ {
+ LogVerbose(@"close(socket6FD)");
+ close(theSocketFD);
+ }
+ });
+
+ // We will not be able to receive until the socket is bound to a port,
+ // either explicitly via bind, or implicitly by connect or by sending data.
+ //
+ // But we should be able to send immediately.
+
+ socket6FDBytesAvailable = 0;
+ flags |= kSock6CanAcceptBytes;
+
+ flags |= kSend6SourceSuspended;
+ flags |= kReceive6SourceSuspended;
+}
+
+- (BOOL)createSocket4:(BOOL)useIPv4 socket6:(BOOL)useIPv6 error:(NSError **)errPtr
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert(((flags & kDidCreateSockets) == 0), @"Sockets have already been created");
+
+ // CreateSocket Block
+ // This block will be invoked below.
+
+ int(^createSocket)(int) = ^int (int domain) {
+
+ int socketFD = socket(domain, SOCK_DGRAM, 0);
+
+ if (socketFD == SOCKET_NULL)
+ {
+ if (errPtr)
+ *errPtr = [self errnoErrorWithReason:@"Error in socket() function"];
+
+ return SOCKET_NULL;
+ }
+
+ int status;
+
+ // Set socket options
+
+ status = fcntl(socketFD, F_SETFL, O_NONBLOCK);
+ if (status == -1)
+ {
+ if (errPtr)
+ *errPtr = [self errnoErrorWithReason:@"Error enabling non-blocking IO on socket (fcntl)"];
+
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ int reuseaddr = 1;
+ status = setsockopt(socketFD, SOL_SOCKET, SO_REUSEADDR, &reuseaddr, sizeof(reuseaddr));
+ if (status == -1)
+ {
+ if (errPtr)
+ *errPtr = [self errnoErrorWithReason:@"Error enabling address reuse (setsockopt)"];
+
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ int nosigpipe = 1;
+ status = setsockopt(socketFD, SOL_SOCKET, SO_NOSIGPIPE, &nosigpipe, sizeof(nosigpipe));
+ if (status == -1)
+ {
+ if (errPtr)
+ *errPtr = [self errnoErrorWithReason:@"Error disabling sigpipe (setsockopt)"];
+
+ close(socketFD);
+ return SOCKET_NULL;
+ }
+
+ return socketFD;
+ };
+
+ // Create sockets depending upon given configuration.
+
+ if (useIPv4)
+ {
+ LogVerbose(@"Creating IPv4 socket");
+
+ socket4FD = createSocket(AF_INET);
+ if (socket4FD == SOCKET_NULL)
+ {
+ // errPtr set in local createSocket() block
+ return NO;
+ }
+ }
+
+ if (useIPv6)
+ {
+ LogVerbose(@"Creating IPv6 socket");
+
+ socket6FD = createSocket(AF_INET6);
+ if (socket6FD == SOCKET_NULL)
+ {
+ // errPtr set in local createSocket() block
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ close(socket4FD);
+ socket4FD = SOCKET_NULL;
+ }
+
+ return NO;
+ }
+ }
+
+ // Setup send and receive sources
+
+ if (useIPv4)
+ [self setupSendAndReceiveSourcesForSocket4];
+ if (useIPv6)
+ [self setupSendAndReceiveSourcesForSocket6];
+
+ flags |= kDidCreateSockets;
+ return YES;
+}
+
+- (BOOL)createSockets:(NSError **)errPtr
+{
+ LogTrace();
+
+ BOOL useIPv4 = [self isIPv4Enabled];
+ BOOL useIPv6 = [self isIPv6Enabled];
+
+ return [self createSocket4:useIPv4 socket6:useIPv6 error:errPtr];
+}
+
+- (void)suspendSend4Source
+{
+ if (send4Source && !(flags & kSend4SourceSuspended))
+ {
+ LogVerbose(@"dispatch_suspend(send4Source)");
+
+ dispatch_suspend(send4Source);
+ flags |= kSend4SourceSuspended;
+ }
+}
+
+- (void)suspendSend6Source
+{
+ if (send6Source && !(flags & kSend6SourceSuspended))
+ {
+ LogVerbose(@"dispatch_suspend(send6Source)");
+
+ dispatch_suspend(send6Source);
+ flags |= kSend6SourceSuspended;
+ }
+}
+
+- (void)resumeSend4Source
+{
+ if (send4Source && (flags & kSend4SourceSuspended))
+ {
+ LogVerbose(@"dispatch_resume(send4Source)");
+
+ dispatch_resume(send4Source);
+ flags &= ~kSend4SourceSuspended;
+ }
+}
+
+- (void)resumeSend6Source
+{
+ if (send6Source && (flags & kSend6SourceSuspended))
+ {
+ LogVerbose(@"dispatch_resume(send6Source)");
+
+ dispatch_resume(send6Source);
+ flags &= ~kSend6SourceSuspended;
+ }
+}
+
+- (void)suspendReceive4Source
+{
+ if (receive4Source && !(flags & kReceive4SourceSuspended))
+ {
+ LogVerbose(@"dispatch_suspend(receive4Source)");
+
+ dispatch_suspend(receive4Source);
+ flags |= kReceive4SourceSuspended;
+ }
+}
+
+- (void)suspendReceive6Source
+{
+ if (receive6Source && !(flags & kReceive6SourceSuspended))
+ {
+ LogVerbose(@"dispatch_suspend(receive6Source)");
+
+ dispatch_suspend(receive6Source);
+ flags |= kReceive6SourceSuspended;
+ }
+}
+
+- (void)resumeReceive4Source
+{
+ if (receive4Source && (flags & kReceive4SourceSuspended))
+ {
+ LogVerbose(@"dispatch_resume(receive4Source)");
+
+ dispatch_resume(receive4Source);
+ flags &= ~kReceive4SourceSuspended;
+ }
+}
+
+- (void)resumeReceive6Source
+{
+ if (receive6Source && (flags & kReceive6SourceSuspended))
+ {
+ LogVerbose(@"dispatch_resume(receive6Source)");
+
+ dispatch_resume(receive6Source);
+ flags &= ~kReceive6SourceSuspended;
+ }
+}
+
+- (void)closeSocket4
+{
+ if (socket4FD != SOCKET_NULL)
+ {
+ LogVerbose(@"dispatch_source_cancel(send4Source)");
+ dispatch_source_cancel(send4Source);
+
+ LogVerbose(@"dispatch_source_cancel(receive4Source)");
+ dispatch_source_cancel(receive4Source);
+
+ // For some crazy reason (in my opinion), cancelling a dispatch source doesn't
+ // invoke the cancel handler if the dispatch source is paused.
+ // So we have to unpause the source if needed.
+ // This allows the cancel handler to be run, which in turn releases the source and closes the socket.
+
+ [self resumeSend4Source];
+ [self resumeReceive4Source];
+
+ // The sockets will be closed by the cancel handlers of the corresponding source
+
+ send4Source = NULL;
+ receive4Source = NULL;
+
+ socket4FD = SOCKET_NULL;
+
+ // Clear socket states
+
+ socket4FDBytesAvailable = 0;
+ flags &= ~kSock4CanAcceptBytes;
+
+ // Clear cached info
+
+ cachedLocalAddress4 = nil;
+ cachedLocalHost4 = nil;
+ cachedLocalPort4 = 0;
+ }
+}
+
+- (void)closeSocket6
+{
+ if (socket6FD != SOCKET_NULL)
+ {
+ LogVerbose(@"dispatch_source_cancel(send6Source)");
+ dispatch_source_cancel(send6Source);
+
+ LogVerbose(@"dispatch_source_cancel(receive6Source)");
+ dispatch_source_cancel(receive6Source);
+
+ // For some crazy reason (in my opinion), cancelling a dispatch source doesn't
+ // invoke the cancel handler if the dispatch source is paused.
+ // So we have to unpause the source if needed.
+ // This allows the cancel handler to be run, which in turn releases the source and closes the socket.
+
+ [self resumeSend6Source];
+ [self resumeReceive6Source];
+
+ send6Source = NULL;
+ receive6Source = NULL;
+
+ // The sockets will be closed by the cancel handlers of the corresponding source
+
+ socket6FD = SOCKET_NULL;
+
+ // Clear socket states
+
+ socket6FDBytesAvailable = 0;
+ flags &= ~kSock6CanAcceptBytes;
+
+ // Clear cached info
+
+ cachedLocalAddress6 = nil;
+ cachedLocalHost6 = nil;
+ cachedLocalPort6 = 0;
+ }
+}
+
+- (void)closeSockets
+{
+ [self closeSocket4];
+ [self closeSocket6];
+
+ flags &= ~kDidCreateSockets;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Diagnostics
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (BOOL)getLocalAddress:(NSData **)dataPtr
+ host:(NSString **)hostPtr
+ port:(uint16_t *)portPtr
+ forSocket:(int)socketFD
+ withFamily:(int)socketFamily
+{
+
+ NSData *data = nil;
+ NSString *host = nil;
+ uint16_t port = 0;
+
+ if (socketFamily == AF_INET)
+ {
+ struct sockaddr_in sockaddr4;
+ socklen_t sockaddr4len = sizeof(sockaddr4);
+
+ if (getsockname(socketFD, (struct sockaddr *)&sockaddr4, &sockaddr4len) == 0)
+ {
+ data = [NSData dataWithBytes:&sockaddr4 length:sockaddr4len];
+ host = [[self class] hostFromSockaddr4:&sockaddr4];
+ port = [[self class] portFromSockaddr4:&sockaddr4];
+ }
+ else
+ {
+ LogWarn(@"Error in getsockname: %@", [self errnoError]);
+ }
+ }
+ else if (socketFamily == AF_INET6)
+ {
+ struct sockaddr_in6 sockaddr6;
+ socklen_t sockaddr6len = sizeof(sockaddr6);
+
+ if (getsockname(socketFD, (struct sockaddr *)&sockaddr6, &sockaddr6len) == 0)
+ {
+ data = [NSData dataWithBytes:&sockaddr6 length:sockaddr6len];
+ host = [[self class] hostFromSockaddr6:&sockaddr6];
+ port = [[self class] portFromSockaddr6:&sockaddr6];
+ }
+ else
+ {
+ LogWarn(@"Error in getsockname: %@", [self errnoError]);
+ }
+ }
+
+ if (dataPtr) *dataPtr = data;
+ if (hostPtr) *hostPtr = host;
+ if (portPtr) *portPtr = port;
+
+ return (data != nil);
+}
+
+- (void)maybeUpdateCachedLocalAddress4Info
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ if ( cachedLocalAddress4 || ((flags & kDidBind) == 0) || (socket4FD == SOCKET_NULL) )
+ {
+ return;
+ }
+
+ NSData *address = nil;
+ NSString *host = nil;
+ uint16_t port = 0;
+
+ if ([self getLocalAddress:&address host:&host port:&port forSocket:socket4FD withFamily:AF_INET])
+ {
+
+ cachedLocalAddress4 = address;
+ cachedLocalHost4 = host;
+ cachedLocalPort4 = port;
+ }
+}
+
+- (void)maybeUpdateCachedLocalAddress6Info
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ if ( cachedLocalAddress6 || ((flags & kDidBind) == 0) || (socket6FD == SOCKET_NULL) )
+ {
+ return;
+ }
+
+ NSData *address = nil;
+ NSString *host = nil;
+ uint16_t port = 0;
+
+ if ([self getLocalAddress:&address host:&host port:&port forSocket:socket6FD withFamily:AF_INET6])
+ {
+
+ cachedLocalAddress6 = address;
+ cachedLocalHost6 = host;
+ cachedLocalPort6 = port;
+ }
+}
+
+- (NSData *)localAddress
+{
+ __block NSData *result = nil;
+
+ dispatch_block_t block = ^{
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ [self maybeUpdateCachedLocalAddress4Info];
+ result = cachedLocalAddress4;
+ }
+ else
+ {
+ [self maybeUpdateCachedLocalAddress6Info];
+ result = cachedLocalAddress6;
+ }
+
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (NSString *)localHost
+{
+ __block NSString *result = nil;
+
+ dispatch_block_t block = ^{
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ [self maybeUpdateCachedLocalAddress4Info];
+ result = cachedLocalHost4;
+ }
+ else
+ {
+ [self maybeUpdateCachedLocalAddress6Info];
+ result = cachedLocalHost6;
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (uint16_t)localPort
+{
+ __block uint16_t result = 0;
+
+ dispatch_block_t block = ^{
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ [self maybeUpdateCachedLocalAddress4Info];
+ result = cachedLocalPort4;
+ }
+ else
+ {
+ [self maybeUpdateCachedLocalAddress6Info];
+ result = cachedLocalPort6;
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (NSData *)localAddress_IPv4
+{
+ __block NSData *result = nil;
+
+ dispatch_block_t block = ^{
+
+ [self maybeUpdateCachedLocalAddress4Info];
+ result = cachedLocalAddress4;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (NSString *)localHost_IPv4
+{
+ __block NSString *result = nil;
+
+ dispatch_block_t block = ^{
+
+ [self maybeUpdateCachedLocalAddress4Info];
+ result = cachedLocalHost4;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (uint16_t)localPort_IPv4
+{
+ __block uint16_t result = 0;
+
+ dispatch_block_t block = ^{
+
+ [self maybeUpdateCachedLocalAddress4Info];
+ result = cachedLocalPort4;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (NSData *)localAddress_IPv6
+{
+ __block NSData *result = nil;
+
+ dispatch_block_t block = ^{
+
+ [self maybeUpdateCachedLocalAddress6Info];
+ result = cachedLocalAddress6;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (NSString *)localHost_IPv6
+{
+ __block NSString *result = nil;
+
+ dispatch_block_t block = ^{
+
+ [self maybeUpdateCachedLocalAddress6Info];
+ result = cachedLocalHost6;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (uint16_t)localPort_IPv6
+{
+ __block uint16_t result = 0;
+
+ dispatch_block_t block = ^{
+
+ [self maybeUpdateCachedLocalAddress6Info];
+ result = cachedLocalPort6;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (void)maybeUpdateCachedConnectedAddressInfo
+{
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ if (cachedConnectedAddress || (flags & kDidConnect) == 0)
+ {
+ return;
+ }
+
+ NSData *data = nil;
+ NSString *host = nil;
+ uint16_t port = 0;
+ int family = AF_UNSPEC;
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ struct sockaddr_in sockaddr4;
+ socklen_t sockaddr4len = sizeof(sockaddr4);
+
+ if (getpeername(socket4FD, (struct sockaddr *)&sockaddr4, &sockaddr4len) == 0)
+ {
+ data = [NSData dataWithBytes:&sockaddr4 length:sockaddr4len];
+ host = [[self class] hostFromSockaddr4:&sockaddr4];
+ port = [[self class] portFromSockaddr4:&sockaddr4];
+ family = AF_INET;
+ }
+ else
+ {
+ LogWarn(@"Error in getpeername: %@", [self errnoError]);
+ }
+ }
+ else if (socket6FD != SOCKET_NULL)
+ {
+ struct sockaddr_in6 sockaddr6;
+ socklen_t sockaddr6len = sizeof(sockaddr6);
+
+ if (getpeername(socket6FD, (struct sockaddr *)&sockaddr6, &sockaddr6len) == 0)
+ {
+ data = [NSData dataWithBytes:&sockaddr6 length:sockaddr6len];
+ host = [[self class] hostFromSockaddr6:&sockaddr6];
+ port = [[self class] portFromSockaddr6:&sockaddr6];
+ family = AF_INET6;
+ }
+ else
+ {
+ LogWarn(@"Error in getpeername: %@", [self errnoError]);
+ }
+ }
+
+
+ cachedConnectedAddress = data;
+ cachedConnectedHost = host;
+ cachedConnectedPort = port;
+ cachedConnectedFamily = family;
+}
+
+- (NSData *)connectedAddress
+{
+ __block NSData *result = nil;
+
+ dispatch_block_t block = ^{
+
+ [self maybeUpdateCachedConnectedAddressInfo];
+ result = cachedConnectedAddress;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (NSString *)connectedHost
+{
+ __block NSString *result = nil;
+
+ dispatch_block_t block = ^{
+
+ [self maybeUpdateCachedConnectedAddressInfo];
+ result = cachedConnectedHost;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (uint16_t)connectedPort
+{
+ __block uint16_t result = 0;
+
+ dispatch_block_t block = ^{
+
+ [self maybeUpdateCachedConnectedAddressInfo];
+ result = cachedConnectedPort;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, AutoreleasedBlock(block));
+
+ return result;
+}
+
+- (BOOL)isConnected
+{
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+ result = (flags & kDidConnect) ? YES : NO;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (BOOL)isClosed
+{
+ __block BOOL result = YES;
+
+ dispatch_block_t block = ^{
+
+ result = (flags & kDidCreateSockets) ? NO : YES;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (BOOL)isIPv4
+{
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+
+ if (flags & kDidCreateSockets)
+ {
+ result = (socket4FD != SOCKET_NULL);
+ }
+ else
+ {
+ result = [self isIPv4Enabled];
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+- (BOOL)isIPv6
+{
+ __block BOOL result = NO;
+
+ dispatch_block_t block = ^{
+
+ if (flags & kDidCreateSockets)
+ {
+ result = (socket6FD != SOCKET_NULL);
+ }
+ else
+ {
+ result = [self isIPv6Enabled];
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ return result;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Binding
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * This method runs through the various checks required prior to a bind attempt.
+ * It is shared between the various bind methods.
+**/
+- (BOOL)preBind:(NSError **)errPtr
+{
+ if (![self preOp:errPtr])
+ {
+ return NO;
+ }
+
+ if (flags & kDidBind)
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Cannot bind a socket more than once.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ if ((flags & kConnecting) || (flags & kDidConnect))
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Cannot bind after connecting. If needed, bind first, then connect.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ BOOL isIPv4Disabled = (config & kIPv4Disabled) ? YES : NO;
+ BOOL isIPv6Disabled = (config & kIPv6Disabled) ? YES : NO;
+
+ if (isIPv4Disabled && isIPv6Disabled) // Must have IPv4 or IPv6 enabled
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Both IPv4 and IPv6 have been disabled. Must enable at least one protocol first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ return YES;
+}
+
+- (BOOL)bindToPort:(uint16_t)port error:(NSError **)errPtr
+{
+ return [self bindToPort:port interface:nil error:errPtr];
+}
+
+- (BOOL)bindToPort:(uint16_t)port interface:(NSString *)interface error:(NSError **)errPtr
+{
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ // Run through sanity checks
+
+ if (![self preBind:&err])
+ {
+ return_from_block;
+ }
+
+ // Check the given interface
+
+ NSData *interface4 = nil;
+ NSData *interface6 = nil;
+
+ [self convertIntefaceDescription:interface port:port intoAddress4:&interface4 address6:&interface6];
+
+ if ((interface4 == nil) && (interface6 == nil))
+ {
+ NSString *msg = @"Unknown interface. Specify valid interface by name (e.g. \"en1\") or IP address.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ BOOL isIPv4Disabled = (config & kIPv4Disabled) ? YES : NO;
+ BOOL isIPv6Disabled = (config & kIPv6Disabled) ? YES : NO;
+
+ if (isIPv4Disabled && (interface6 == nil))
+ {
+ NSString *msg = @"IPv4 has been disabled and specified interface doesn't support IPv6.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ if (isIPv6Disabled && (interface4 == nil))
+ {
+ NSString *msg = @"IPv6 has been disabled and specified interface doesn't support IPv4.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Determine protocol(s)
+
+ BOOL useIPv4 = !isIPv4Disabled && (interface4 != nil);
+ BOOL useIPv6 = !isIPv6Disabled && (interface6 != nil);
+
+ // Create the socket(s) if needed
+
+ if ((flags & kDidCreateSockets) == 0)
+ {
+ if (![self createSocket4:useIPv4 socket6:useIPv6 error:&err])
+ {
+ return_from_block;
+ }
+ }
+
+ // Bind the socket(s)
+
+ LogVerbose(@"Binding socket to port(%hu) interface(%@)", port, interface);
+
+ if (useIPv4)
+ {
+ int status = bind(socket4FD, (struct sockaddr *)[interface4 bytes], (socklen_t)[interface4 length]);
+ if (status == -1)
+ {
+ [self closeSockets];
+
+ NSString *reason = @"Error in bind() function";
+ err = [self errnoErrorWithReason:reason];
+
+ return_from_block;
+ }
+ }
+
+ if (useIPv6)
+ {
+ int status = bind(socket6FD, (struct sockaddr *)[interface6 bytes], (socklen_t)[interface6 length]);
+ if (status == -1)
+ {
+ [self closeSockets];
+
+ NSString *reason = @"Error in bind() function";
+ err = [self errnoErrorWithReason:reason];
+
+ return_from_block;
+ }
+ }
+
+ // Update flags
+
+ flags |= kDidBind;
+
+ if (!useIPv4) flags |= kIPv4Deactivated;
+ if (!useIPv6) flags |= kIPv6Deactivated;
+
+ result = YES;
+
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (err)
+ LogError(@"Error binding to port/interface: %@", err);
+
+ if (errPtr)
+ *errPtr = err;
+
+ return result;
+}
+
+- (BOOL)bindToAddress:(NSData *)localAddr error:(NSError **)errPtr
+{
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ // Run through sanity checks
+
+ if (![self preBind:&err])
+ {
+ return_from_block;
+ }
+
+ // Check the given address
+
+ int addressFamily = [[self class] familyFromAddress:localAddr];
+
+ if (addressFamily == AF_UNSPEC)
+ {
+ NSString *msg = @"A valid IPv4 or IPv6 address was not given";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ NSData *localAddr4 = (addressFamily == AF_INET) ? localAddr : nil;
+ NSData *localAddr6 = (addressFamily == AF_INET6) ? localAddr : nil;
+
+ BOOL isIPv4Disabled = (config & kIPv4Disabled) ? YES : NO;
+ BOOL isIPv6Disabled = (config & kIPv6Disabled) ? YES : NO;
+
+ if (isIPv4Disabled && localAddr4)
+ {
+ NSString *msg = @"IPv4 has been disabled and an IPv4 address was passed.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ if (isIPv6Disabled && localAddr6)
+ {
+ NSString *msg = @"IPv6 has been disabled and an IPv6 address was passed.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Determine protocol(s)
+
+ BOOL useIPv4 = !isIPv4Disabled && (localAddr4 != nil);
+ BOOL useIPv6 = !isIPv6Disabled && (localAddr6 != nil);
+
+ // Create the socket(s) if needed
+
+ if ((flags & kDidCreateSockets) == 0)
+ {
+ if (![self createSocket4:useIPv4 socket6:useIPv6 error:&err])
+ {
+ return_from_block;
+ }
+ }
+
+ // Bind the socket(s)
+
+ if (useIPv4)
+ {
+ LogVerbose(@"Binding socket to address(%@:%hu)",
+ [[self class] hostFromAddress:localAddr4],
+ [[self class] portFromAddress:localAddr4]);
+
+ int status = bind(socket4FD, (struct sockaddr *)[localAddr4 bytes], (socklen_t)[localAddr4 length]);
+ if (status == -1)
+ {
+ [self closeSockets];
+
+ NSString *reason = @"Error in bind() function";
+ err = [self errnoErrorWithReason:reason];
+
+ return_from_block;
+ }
+ }
+ else
+ {
+ LogVerbose(@"Binding socket to address(%@:%hu)",
+ [[self class] hostFromAddress:localAddr6],
+ [[self class] portFromAddress:localAddr6]);
+
+ int status = bind(socket6FD, (struct sockaddr *)[localAddr6 bytes], (socklen_t)[localAddr6 length]);
+ if (status == -1)
+ {
+ [self closeSockets];
+
+ NSString *reason = @"Error in bind() function";
+ err = [self errnoErrorWithReason:reason];
+
+ return_from_block;
+ }
+ }
+
+ // Update flags
+
+ flags |= kDidBind;
+
+ if (!useIPv4) flags |= kIPv4Deactivated;
+ if (!useIPv6) flags |= kIPv6Deactivated;
+
+ result = YES;
+
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (err)
+ LogError(@"Error binding to address: %@", err);
+
+ if (errPtr)
+ *errPtr = err;
+
+ return result;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Connecting
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * This method runs through the various checks required prior to a connect attempt.
+ * It is shared between the various connect methods.
+**/
+- (BOOL)preConnect:(NSError **)errPtr
+{
+ if (![self preOp:errPtr])
+ {
+ return NO;
+ }
+
+ if ((flags & kConnecting) || (flags & kDidConnect))
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Cannot connect a socket more than once.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ BOOL isIPv4Disabled = (config & kIPv4Disabled) ? YES : NO;
+ BOOL isIPv6Disabled = (config & kIPv6Disabled) ? YES : NO;
+
+ if (isIPv4Disabled && isIPv6Disabled) // Must have IPv4 or IPv6 enabled
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Both IPv4 and IPv6 have been disabled. Must enable at least one protocol first.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ return YES;
+}
+
+- (BOOL)connectToHost:(NSString *)host onPort:(uint16_t)port error:(NSError **)errPtr
+{
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ // Run through sanity checks.
+
+ if (![self preConnect:&err])
+ {
+ return_from_block;
+ }
+
+ // Check parameter(s)
+
+ if (host == nil)
+ {
+ NSString *msg = @"The host param is nil. Should be domain name or IP address string.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Create the socket(s) if needed
+
+ if ((flags & kDidCreateSockets) == 0)
+ {
+ if (![self createSockets:&err])
+ {
+ return_from_block;
+ }
+ }
+
+ // Create special connect packet
+
+ GCDAsyncUdpSpecialPacket *packet = [[GCDAsyncUdpSpecialPacket alloc] init];
+ packet->resolveInProgress = YES;
+
+ // Start asynchronous DNS resolve for host:port on background queue
+
+ LogVerbose(@"Dispatching DNS resolve for connect...");
+
+ [self asyncResolveHost:host port:port withCompletionBlock:^(NSArray *addresses, NSError *error) {
+
+ // The asyncResolveHost:port:: method asynchronously dispatches a task onto the global concurrent queue,
+ // and immediately returns. Once the async resolve task completes,
+ // this block is executed on our socketQueue.
+
+ packet->resolveInProgress = NO;
+
+ packet->addresses = addresses;
+ packet->error = error;
+
+ [self maybeConnect];
+ }];
+
+ // Updates flags, add connect packet to send queue, and pump send queue
+
+ flags |= kConnecting;
+
+ [sendQueue addObject:packet];
+ [self maybeDequeueSend];
+
+ result = YES;
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (err)
+ LogError(@"Error connecting to host/port: %@", err);
+
+ if (errPtr)
+ *errPtr = err;
+
+ return result;
+}
+
+- (BOOL)connectToAddress:(NSData *)remoteAddr error:(NSError **)errPtr
+{
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ // Run through sanity checks.
+
+ if (![self preConnect:&err])
+ {
+ return_from_block;
+ }
+
+ // Check parameter(s)
+
+ if (remoteAddr == nil)
+ {
+ NSString *msg = @"The address param is nil. Should be a valid address.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Create the socket(s) if needed
+
+ if ((flags & kDidCreateSockets) == 0)
+ {
+ if (![self createSockets:&err])
+ {
+ return_from_block;
+ }
+ }
+
+ // The remoteAddr parameter could be of type NSMutableData.
+ // So we copy it to be safe.
+
+ NSData *address = [remoteAddr copy];
+ NSArray *addresses = [NSArray arrayWithObject:address];
+
+ GCDAsyncUdpSpecialPacket *packet = [[GCDAsyncUdpSpecialPacket alloc] init];
+ packet->addresses = addresses;
+
+ // Updates flags, add connect packet to send queue, and pump send queue
+
+ flags |= kConnecting;
+
+ [sendQueue addObject:packet];
+ [self maybeDequeueSend];
+
+ result = YES;
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (err)
+ LogError(@"Error connecting to address: %@", err);
+
+ if (errPtr)
+ *errPtr = err;
+
+ return result;
+}
+
+- (void)maybeConnect
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+
+ BOOL sendQueueReady = [currentSend isKindOfClass:[GCDAsyncUdpSpecialPacket class]];
+
+ if (sendQueueReady)
+ {
+ GCDAsyncUdpSpecialPacket *connectPacket = (GCDAsyncUdpSpecialPacket *)currentSend;
+
+ if (connectPacket->resolveInProgress)
+ {
+ LogVerbose(@"Waiting for DNS resolve...");
+ }
+ else
+ {
+ if (connectPacket->error)
+ {
+ [self notifyDidNotConnect:connectPacket->error];
+ }
+ else
+ {
+ NSData *address = nil;
+ NSError *error = nil;
+
+ int addressFamily = [self getAddress:&address error:&error fromAddresses:connectPacket->addresses];
+
+ // Perform connect
+
+ BOOL result = NO;
+
+ switch (addressFamily)
+ {
+ case AF_INET : result = [self connectWithAddress4:address error:&error]; break;
+ case AF_INET6 : result = [self connectWithAddress6:address error:&error]; break;
+ }
+
+ if (result)
+ {
+ flags |= kDidBind;
+ flags |= kDidConnect;
+
+ cachedConnectedAddress = address;
+ cachedConnectedHost = [[self class] hostFromAddress:address];
+ cachedConnectedPort = [[self class] portFromAddress:address];
+ cachedConnectedFamily = addressFamily;
+
+ [self notifyDidConnectToAddress:address];
+ }
+ else
+ {
+ [self notifyDidNotConnect:error];
+ }
+ }
+
+ flags &= ~kConnecting;
+
+ [self endCurrentSend];
+ [self maybeDequeueSend];
+ }
+ }
+}
+
+- (BOOL)connectWithAddress4:(NSData *)address4 error:(NSError **)errPtr
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ int status = connect(socket4FD, (struct sockaddr *)[address4 bytes], (socklen_t)[address4 length]);
+ if (status != 0)
+ {
+ if (errPtr)
+ *errPtr = [self errnoErrorWithReason:@"Error in connect() function"];
+
+ return NO;
+ }
+
+ [self closeSocket6];
+ flags |= kIPv6Deactivated;
+
+ return YES;
+}
+
+- (BOOL)connectWithAddress6:(NSData *)address6 error:(NSError **)errPtr
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ int status = connect(socket6FD, (struct sockaddr *)[address6 bytes], (socklen_t)[address6 length]);
+ if (status != 0)
+ {
+ if (errPtr)
+ *errPtr = [self errnoErrorWithReason:@"Error in connect() function"];
+
+ return NO;
+ }
+
+ [self closeSocket4];
+ flags |= kIPv4Deactivated;
+
+ return YES;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Multicast
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (BOOL)preJoin:(NSError **)errPtr
+{
+ if (![self preOp:errPtr])
+ {
+ return NO;
+ }
+
+ if (!(flags & kDidBind))
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Must bind a socket before joining a multicast group.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ if ((flags & kConnecting) || (flags & kDidConnect))
+ {
+ if (errPtr)
+ {
+ NSString *msg = @"Cannot join a multicast group if connected.";
+ *errPtr = [self badConfigError:msg];
+ }
+ return NO;
+ }
+
+ return YES;
+}
+
+- (BOOL)joinMulticastGroup:(NSString *)group error:(NSError **)errPtr
+{
+ return [self joinMulticastGroup:group onInterface:nil error:errPtr];
+}
+
+- (BOOL)joinMulticastGroup:(NSString *)group onInterface:(NSString *)interface error:(NSError **)errPtr
+{
+ // IP_ADD_MEMBERSHIP == IPV6_JOIN_GROUP
+ return [self performMulticastRequest:IP_ADD_MEMBERSHIP forGroup:group onInterface:interface error:errPtr];
+}
+
+- (BOOL)leaveMulticastGroup:(NSString *)group error:(NSError **)errPtr
+{
+ return [self leaveMulticastGroup:group onInterface:nil error:errPtr];
+}
+
+- (BOOL)leaveMulticastGroup:(NSString *)group onInterface:(NSString *)interface error:(NSError **)errPtr
+{
+ // IP_DROP_MEMBERSHIP == IPV6_LEAVE_GROUP
+ return [self performMulticastRequest:IP_DROP_MEMBERSHIP forGroup:group onInterface:interface error:errPtr];
+}
+
+- (BOOL)performMulticastRequest:(int)requestType
+ forGroup:(NSString *)group
+ onInterface:(NSString *)interface
+ error:(NSError **)errPtr
+{
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ // Run through sanity checks
+
+ if (![self preJoin:&err])
+ {
+ return_from_block;
+ }
+
+ // Convert group to address
+
+ NSData *groupAddr4 = nil;
+ NSData *groupAddr6 = nil;
+
+ [self convertNumericHost:group port:0 intoAddress4:&groupAddr4 address6:&groupAddr6];
+
+ if ((groupAddr4 == nil) && (groupAddr6 == nil))
+ {
+ NSString *msg = @"Unknown group. Specify valid group IP address.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Convert interface to address
+
+ NSData *interfaceAddr4 = nil;
+ NSData *interfaceAddr6 = nil;
+
+ [self convertIntefaceDescription:interface port:0 intoAddress4:&interfaceAddr4 address6:&interfaceAddr6];
+
+ if ((interfaceAddr4 == nil) && (interfaceAddr6 == nil))
+ {
+ NSString *msg = @"Unknown interface. Specify valid interface by name (e.g. \"en1\") or IP address.";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ // Perform join
+
+ if ((socket4FD != SOCKET_NULL) && groupAddr4 && interfaceAddr4)
+ {
+ const struct sockaddr_in *nativeGroup = (struct sockaddr_in *)[groupAddr4 bytes];
+ const struct sockaddr_in *nativeIface = (struct sockaddr_in *)[interfaceAddr4 bytes];
+
+ struct ip_mreq imreq;
+ imreq.imr_multiaddr = nativeGroup->sin_addr;
+ imreq.imr_interface = nativeIface->sin_addr;
+
+ int status = setsockopt(socket4FD, IPPROTO_IP, requestType, (const void *)&imreq, sizeof(imreq));
+ if (status != 0)
+ {
+ err = [self errnoErrorWithReason:@"Error in setsockopt() function"];
+
+ return_from_block;
+ }
+
+ // Using IPv4 only
+ [self closeSocket6];
+
+ result = YES;
+ }
+ else if ((socket6FD != SOCKET_NULL) && groupAddr6 && interfaceAddr6)
+ {
+ const struct sockaddr_in6 *nativeGroup = (struct sockaddr_in6 *)[groupAddr6 bytes];
+
+ struct ipv6_mreq imreq;
+ imreq.ipv6mr_multiaddr = nativeGroup->sin6_addr;
+ imreq.ipv6mr_interface = [self indexOfInterfaceAddr6:interfaceAddr6];
+
+ int status = setsockopt(socket6FD, IPPROTO_IPV6, requestType, (const void *)&imreq, sizeof(imreq));
+ if (status != 0)
+ {
+ err = [self errnoErrorWithReason:@"Error in setsockopt() function"];
+
+ return_from_block;
+ }
+
+ // Using IPv6 only
+ [self closeSocket4];
+
+ result = YES;
+ }
+ else
+ {
+ NSString *msg = @"Socket, group, and interface do not have matching IP versions";
+ err = [self badParamError:msg];
+
+ return_from_block;
+ }
+
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (errPtr)
+ *errPtr = err;
+
+ return result;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Reuse port
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (BOOL)enableReusePort:(BOOL)flag error:(NSError **)errPtr
+{
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ if (![self preOp:&err])
+ {
+ return_from_block;
+ }
+
+ if ((flags & kDidCreateSockets) == 0)
+ {
+ if (![self createSockets:&err])
+ {
+ return_from_block;
+ }
+ }
+
+ int value = flag ? 1 : 0;
+ if (socket4FD != SOCKET_NULL)
+ {
+ int error = setsockopt(socket4FD, SOL_SOCKET, SO_REUSEPORT, (const void *)&value, sizeof(value));
+
+ if (error)
+ {
+ err = [self errnoErrorWithReason:@"Error in setsockopt() function"];
+
+ return_from_block;
+ }
+ result = YES;
+ }
+
+ if (socket6FD != SOCKET_NULL)
+ {
+ int error = setsockopt(socket6FD, SOL_SOCKET, SO_REUSEPORT, (const void *)&value, sizeof(value));
+
+ if (error)
+ {
+ err = [self errnoErrorWithReason:@"Error in setsockopt() function"];
+
+ return_from_block;
+ }
+ result = YES;
+ }
+
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (errPtr)
+ *errPtr = err;
+
+ return result;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Broadcast
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (BOOL)enableBroadcast:(BOOL)flag error:(NSError **)errPtr
+{
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ if (![self preOp:&err])
+ {
+ return_from_block;
+ }
+
+ if ((flags & kDidCreateSockets) == 0)
+ {
+ if (![self createSockets:&err])
+ {
+ return_from_block;
+ }
+ }
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ int value = flag ? 1 : 0;
+ int error = setsockopt(socket4FD, SOL_SOCKET, SO_BROADCAST, (const void *)&value, sizeof(value));
+
+ if (error)
+ {
+ err = [self errnoErrorWithReason:@"Error in setsockopt() function"];
+
+ return_from_block;
+ }
+ result = YES;
+ }
+
+ // IPv6 does not implement broadcast, the ability to send a packet to all hosts on the attached link.
+ // The same effect can be achieved by sending a packet to the link-local all hosts multicast group.
+
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (errPtr)
+ *errPtr = err;
+
+ return result;
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Sending
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (void)sendData:(NSData *)data withTag:(long)tag
+{
+ [self sendData:data withTimeout:-1.0 tag:tag];
+}
+
+- (void)sendData:(NSData *)data withTimeout:(NSTimeInterval)timeout tag:(long)tag
+{
+ LogTrace();
+
+ if ([data length] == 0)
+ {
+ LogWarn(@"Ignoring attempt to send nil/empty data.");
+ return;
+ }
+
+ GCDAsyncUdpSendPacket *packet = [[GCDAsyncUdpSendPacket alloc] initWithData:data timeout:timeout tag:tag];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ [sendQueue addObject:packet];
+ [self maybeDequeueSend];
+ }});
+
+}
+
+- (void)sendData:(NSData *)data
+ toHost:(NSString *)host
+ port:(uint16_t)port
+ withTimeout:(NSTimeInterval)timeout
+ tag:(long)tag
+{
+ LogTrace();
+
+ if ([data length] == 0)
+ {
+ LogWarn(@"Ignoring attempt to send nil/empty data.");
+ return;
+ }
+
+ GCDAsyncUdpSendPacket *packet = [[GCDAsyncUdpSendPacket alloc] initWithData:data timeout:timeout tag:tag];
+ packet->resolveInProgress = YES;
+
+ [self asyncResolveHost:host port:port withCompletionBlock:^(NSArray *addresses, NSError *error) {
+
+ // The asyncResolveHost:port:: method asynchronously dispatches a task onto the global concurrent queue,
+ // and immediately returns. Once the async resolve task completes,
+ // this block is executed on our socketQueue.
+
+ packet->resolveInProgress = NO;
+
+ packet->resolvedAddresses = addresses;
+ packet->resolveError = error;
+
+ if (packet == currentSend)
+ {
+ LogVerbose(@"currentSend - address resolved");
+ [self doPreSend];
+ }
+ }];
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ [sendQueue addObject:packet];
+ [self maybeDequeueSend];
+
+ }});
+
+}
+
+- (void)sendData:(NSData *)data toAddress:(NSData *)remoteAddr withTimeout:(NSTimeInterval)timeout tag:(long)tag
+{
+ LogTrace();
+
+ if ([data length] == 0)
+ {
+ LogWarn(@"Ignoring attempt to send nil/empty data.");
+ return;
+ }
+
+ GCDAsyncUdpSendPacket *packet = [[GCDAsyncUdpSendPacket alloc] initWithData:data timeout:timeout tag:tag];
+ packet->addressFamily = [GCDAsyncUdpSocket familyFromAddress:remoteAddr];
+ packet->address = remoteAddr;
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ [sendQueue addObject:packet];
+ [self maybeDequeueSend];
+ }});
+}
+
+- (void)setSendFilter:(GCDAsyncUdpSocketSendFilterBlock)filterBlock withQueue:(dispatch_queue_t)filterQueue
+{
+ [self setSendFilter:filterBlock withQueue:filterQueue isAsynchronous:YES];
+}
+
+- (void)setSendFilter:(GCDAsyncUdpSocketSendFilterBlock)filterBlock
+ withQueue:(dispatch_queue_t)filterQueue
+ isAsynchronous:(BOOL)isAsynchronous
+{
+ GCDAsyncUdpSocketSendFilterBlock newFilterBlock = NULL;
+ dispatch_queue_t newFilterQueue = NULL;
+
+ if (filterBlock)
+ {
+ NSAssert(filterQueue, @"Must provide a dispatch_queue in which to run the filter block.");
+
+ newFilterBlock = [filterBlock copy];
+ newFilterQueue = filterQueue;
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_retain(newFilterQueue);
+ #endif
+ }
+
+ dispatch_block_t block = ^{
+
+ #if !OS_OBJECT_USE_OBJC
+ if (sendFilterQueue) dispatch_release(sendFilterQueue);
+ #endif
+
+ sendFilterBlock = newFilterBlock;
+ sendFilterQueue = newFilterQueue;
+ sendFilterAsync = isAsynchronous;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (void)maybeDequeueSend
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ // If we don't have a send operation already in progress
+ if (currentSend == nil)
+ {
+ // Create the sockets if needed
+ if ((flags & kDidCreateSockets) == 0)
+ {
+ NSError *err = nil;
+ if (![self createSockets:&err])
+ {
+ [self closeWithError:err];
+ return;
+ }
+ }
+
+ while ([sendQueue count] > 0)
+ {
+ // Dequeue the next object in the queue
+ currentSend = [sendQueue objectAtIndex:0];
+ [sendQueue removeObjectAtIndex:0];
+
+ if ([currentSend isKindOfClass:[GCDAsyncUdpSpecialPacket class]])
+ {
+ [self maybeConnect];
+
+ return; // The maybeConnect method, if it connects, will invoke this method again
+ }
+ else if (currentSend->resolveError)
+ {
+ // Notify delegate
+ [self notifyDidNotSendDataWithTag:currentSend->tag dueToError:currentSend->resolveError];
+
+ // Clear currentSend
+ currentSend = nil;
+
+ continue;
+ }
+ else
+ {
+ // Start preprocessing checks on the send packet
+ [self doPreSend];
+
+ break;
+ }
+ }
+
+ if ((currentSend == nil) && (flags & kCloseAfterSends))
+ {
+ [self closeWithError:nil];
+ }
+ }
+}
+
+/**
+ * This method is called after a sendPacket has been dequeued.
+ * It performs various preprocessing checks on the packet,
+ * and queries the sendFilter (if set) to determine if the packet can be sent.
+ *
+ * If the packet passes all checks, it will be passed on to the doSend method.
+**/
+- (void)doPreSend
+{
+ LogTrace();
+
+ //
+ // 1. Check for problems with send packet
+ //
+
+ BOOL waitingForResolve = NO;
+ NSError *error = nil;
+
+ if (flags & kDidConnect)
+ {
+ // Connected socket
+
+ if (currentSend->resolveInProgress || currentSend->resolvedAddresses || currentSend->resolveError)
+ {
+ NSString *msg = @"Cannot specify destination of packet for connected socket";
+ error = [self badConfigError:msg];
+ }
+ else
+ {
+ currentSend->address = cachedConnectedAddress;
+ currentSend->addressFamily = cachedConnectedFamily;
+ }
+ }
+ else
+ {
+ // Non-Connected socket
+
+ if (currentSend->resolveInProgress)
+ {
+ // We're waiting for the packet's destination to be resolved.
+ waitingForResolve = YES;
+ }
+ else if (currentSend->resolveError)
+ {
+ error = currentSend->resolveError;
+ }
+ else if (currentSend->address == nil)
+ {
+ if (currentSend->resolvedAddresses == nil)
+ {
+ NSString *msg = @"You must specify destination of packet for a non-connected socket";
+ error = [self badConfigError:msg];
+ }
+ else
+ {
+ // Pick the proper address to use (out of possibly several resolved addresses)
+
+ NSData *address = nil;
+ int addressFamily = AF_UNSPEC;
+
+ addressFamily = [self getAddress:&address error:&error fromAddresses:currentSend->resolvedAddresses];
+
+ currentSend->address = address;
+ currentSend->addressFamily = addressFamily;
+ }
+ }
+ }
+
+ if (waitingForResolve)
+ {
+ // We're waiting for the packet's destination to be resolved.
+
+ LogVerbose(@"currentSend - waiting for address resolve");
+
+ if (flags & kSock4CanAcceptBytes) {
+ [self suspendSend4Source];
+ }
+ if (flags & kSock6CanAcceptBytes) {
+ [self suspendSend6Source];
+ }
+
+ return;
+ }
+
+ if (error)
+ {
+ // Unable to send packet due to some error.
+ // Notify delegate and move on.
+
+ [self notifyDidNotSendDataWithTag:currentSend->tag dueToError:error];
+ [self endCurrentSend];
+ [self maybeDequeueSend];
+
+ return;
+ }
+
+ //
+ // 2. Query sendFilter (if applicable)
+ //
+
+ if (sendFilterBlock && sendFilterQueue)
+ {
+ // Query sendFilter
+
+ if (sendFilterAsync)
+ {
+ // Scenario 1 of 3 - Need to asynchronously query sendFilter
+
+ currentSend->filterInProgress = YES;
+ GCDAsyncUdpSendPacket *sendPacket = currentSend;
+
+ dispatch_async(sendFilterQueue, ^{ @autoreleasepool {
+
+ BOOL allowed = sendFilterBlock(sendPacket->buffer, sendPacket->address, sendPacket->tag);
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ sendPacket->filterInProgress = NO;
+ if (sendPacket == currentSend)
+ {
+ if (allowed)
+ {
+ [self doSend];
+ }
+ else
+ {
+ LogVerbose(@"currentSend - silently dropped by sendFilter");
+
+ [self notifyDidSendDataWithTag:currentSend->tag];
+ [self endCurrentSend];
+ [self maybeDequeueSend];
+ }
+ }
+ }});
+ }});
+ }
+ else
+ {
+ // Scenario 2 of 3 - Need to synchronously query sendFilter
+
+ __block BOOL allowed = YES;
+
+ dispatch_sync(sendFilterQueue, ^{ @autoreleasepool {
+
+ allowed = sendFilterBlock(currentSend->buffer, currentSend->address, currentSend->tag);
+ }});
+
+ if (allowed)
+ {
+ [self doSend];
+ }
+ else
+ {
+ LogVerbose(@"currentSend - silently dropped by sendFilter");
+
+ [self notifyDidSendDataWithTag:currentSend->tag];
+ [self endCurrentSend];
+ [self maybeDequeueSend];
+ }
+ }
+ }
+ else // if (!sendFilterBlock || !sendFilterQueue)
+ {
+ // Scenario 3 of 3 - No sendFilter. Just go straight into sending.
+
+ [self doSend];
+ }
+}
+
+/**
+ * This method performs the actual sending of data in the currentSend packet.
+ * It should only be called if the
+**/
+- (void)doSend
+{
+ LogTrace();
+
+ NSAssert(currentSend != nil, @"Invalid logic");
+
+ // Perform the actual send
+
+ ssize_t result = 0;
+
+ if (flags & kDidConnect)
+ {
+ // Connected socket
+
+ const void *buffer = [currentSend->buffer bytes];
+ size_t length = (size_t)[currentSend->buffer length];
+
+ if (currentSend->addressFamily == AF_INET)
+ {
+ result = send(socket4FD, buffer, length, 0);
+ LogVerbose(@"send(socket4FD) = %d", result);
+ }
+ else
+ {
+ result = send(socket6FD, buffer, length, 0);
+ LogVerbose(@"send(socket6FD) = %d", result);
+ }
+ }
+ else
+ {
+ // Non-Connected socket
+
+ const void *buffer = [currentSend->buffer bytes];
+ size_t length = (size_t)[currentSend->buffer length];
+
+ const void *dst = [currentSend->address bytes];
+ socklen_t dstSize = (socklen_t)[currentSend->address length];
+
+ if (currentSend->addressFamily == AF_INET)
+ {
+ result = sendto(socket4FD, buffer, length, 0, dst, dstSize);
+ LogVerbose(@"sendto(socket4FD) = %d", result);
+ }
+ else
+ {
+ result = sendto(socket6FD, buffer, length, 0, dst, dstSize);
+ LogVerbose(@"sendto(socket6FD) = %d", result);
+ }
+ }
+
+ // If the socket wasn't bound before, it is now
+
+ if ((flags & kDidBind) == 0)
+ {
+ flags |= kDidBind;
+ }
+
+ // Check the results.
+ //
+ // From the send() & sendto() manpage:
+ //
+ // Upon successful completion, the number of bytes which were sent is returned.
+ // Otherwise, -1 is returned and the global variable errno is set to indicate the error.
+
+ BOOL waitingForSocket = NO;
+ NSError *socketError = nil;
+
+ if (result == 0)
+ {
+ waitingForSocket = YES;
+ }
+ else if (result < 0)
+ {
+ if (errno == EAGAIN)
+ waitingForSocket = YES;
+ else
+ socketError = [self errnoErrorWithReason:@"Error in send() function."];
+ }
+
+ if (waitingForSocket)
+ {
+ // Not enough room in the underlying OS socket send buffer.
+ // Wait for a notification of available space.
+
+ LogVerbose(@"currentSend - waiting for socket");
+
+ if (!(flags & kSock4CanAcceptBytes)) {
+ [self resumeSend4Source];
+ }
+ if (!(flags & kSock6CanAcceptBytes)) {
+ [self resumeSend6Source];
+ }
+
+ if ((sendTimer == NULL) && (currentSend->timeout >= 0.0))
+ {
+ // Unable to send packet right away.
+ // Start timer to timeout the send operation.
+
+ [self setupSendTimerWithTimeout:currentSend->timeout];
+ }
+ }
+ else if (socketError)
+ {
+ [self closeWithError:socketError];
+ }
+ else // done
+ {
+ [self notifyDidSendDataWithTag:currentSend->tag];
+ [self endCurrentSend];
+ [self maybeDequeueSend];
+ }
+}
+
+/**
+ * Releases all resources associated with the currentSend.
+**/
+- (void)endCurrentSend
+{
+ if (sendTimer)
+ {
+ dispatch_source_cancel(sendTimer);
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_release(sendTimer);
+ #endif
+ sendTimer = NULL;
+ }
+
+ currentSend = nil;
+}
+
+/**
+ * Performs the operations to timeout the current send operation, and move on.
+**/
+- (void)doSendTimeout
+{
+ LogTrace();
+
+ [self notifyDidNotSendDataWithTag:currentSend->tag dueToError:[self sendTimeoutError]];
+ [self endCurrentSend];
+ [self maybeDequeueSend];
+}
+
+/**
+ * Sets up a timer that fires to timeout the current send operation.
+ * This method should only be called once per send packet.
+**/
+- (void)setupSendTimerWithTimeout:(NSTimeInterval)timeout
+{
+ NSAssert(sendTimer == NULL, @"Invalid logic");
+ NSAssert(timeout >= 0.0, @"Invalid logic");
+
+ LogTrace();
+
+ sendTimer = dispatch_source_create(DISPATCH_SOURCE_TYPE_TIMER, 0, 0, socketQueue);
+
+ dispatch_source_set_event_handler(sendTimer, ^{ @autoreleasepool {
+
+ [self doSendTimeout];
+ }});
+
+ dispatch_time_t tt = dispatch_time(DISPATCH_TIME_NOW, (int64_t)(timeout * NSEC_PER_SEC));
+
+ dispatch_source_set_timer(sendTimer, tt, DISPATCH_TIME_FOREVER, 0);
+ dispatch_resume(sendTimer);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Receiving
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (BOOL)receiveOnce:(NSError **)errPtr
+{
+ LogTrace();
+
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{
+
+ if ((flags & kReceiveOnce) == 0)
+ {
+ if ((flags & kDidCreateSockets) == 0)
+ {
+ NSString *msg = @"Must bind socket before you can receive data. "
+ @"You can do this explicitly via bind, or implicitly via connect or by sending data.";
+
+ err = [self badConfigError:msg];
+ return_from_block;
+ }
+
+ flags |= kReceiveOnce; // Enable
+ flags &= ~kReceiveContinuous; // Disable
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ [self doReceive];
+ }});
+ }
+
+ result = YES;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (err)
+ LogError(@"Error in beginReceiving: %@", err);
+
+ if (errPtr)
+ *errPtr = err;
+
+ return result;
+}
+
+- (BOOL)beginReceiving:(NSError **)errPtr
+{
+ LogTrace();
+
+ __block BOOL result = NO;
+ __block NSError *err = nil;
+
+ dispatch_block_t block = ^{
+
+ if ((flags & kReceiveContinuous) == 0)
+ {
+ if ((flags & kDidCreateSockets) == 0)
+ {
+ NSString *msg = @"Must bind socket before you can receive data. "
+ @"You can do this explicitly via bind, or implicitly via connect or by sending data.";
+
+ err = [self badConfigError:msg];
+ return_from_block;
+ }
+
+ flags |= kReceiveContinuous; // Enable
+ flags &= ~kReceiveOnce; // Disable
+
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ [self doReceive];
+ }});
+ }
+
+ result = YES;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+
+ if (err)
+ LogError(@"Error in beginReceiving: %@", err);
+
+ if (errPtr)
+ *errPtr = err;
+
+ return result;
+}
+
+- (void)pauseReceiving
+{
+ LogTrace();
+
+ dispatch_block_t block = ^{
+
+ flags &= ~kReceiveOnce; // Disable
+ flags &= ~kReceiveContinuous; // Disable
+
+ if (socket4FDBytesAvailable > 0) {
+ [self suspendReceive4Source];
+ }
+ if (socket6FDBytesAvailable > 0) {
+ [self suspendReceive6Source];
+ }
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (void)setReceiveFilter:(GCDAsyncUdpSocketReceiveFilterBlock)filterBlock withQueue:(dispatch_queue_t)filterQueue
+{
+ [self setReceiveFilter:filterBlock withQueue:filterQueue isAsynchronous:YES];
+}
+
+- (void)setReceiveFilter:(GCDAsyncUdpSocketReceiveFilterBlock)filterBlock
+ withQueue:(dispatch_queue_t)filterQueue
+ isAsynchronous:(BOOL)isAsynchronous
+{
+ GCDAsyncUdpSocketReceiveFilterBlock newFilterBlock = NULL;
+ dispatch_queue_t newFilterQueue = NULL;
+
+ if (filterBlock)
+ {
+ NSAssert(filterQueue, @"Must provide a dispatch_queue in which to run the filter block.");
+
+ newFilterBlock = [filterBlock copy];
+ newFilterQueue = filterQueue;
+ #if !OS_OBJECT_USE_OBJC
+ dispatch_retain(newFilterQueue);
+ #endif
+ }
+
+ dispatch_block_t block = ^{
+
+ #if !OS_OBJECT_USE_OBJC
+ if (receiveFilterQueue) dispatch_release(receiveFilterQueue);
+ #endif
+
+ receiveFilterBlock = newFilterBlock;
+ receiveFilterQueue = newFilterQueue;
+ receiveFilterAsync = isAsynchronous;
+ };
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+- (void)doReceive
+{
+ LogTrace();
+
+ if ((flags & (kReceiveOnce | kReceiveContinuous)) == 0)
+ {
+ LogVerbose(@"Receiving is paused...");
+
+ if (socket4FDBytesAvailable > 0) {
+ [self suspendReceive4Source];
+ }
+ if (socket6FDBytesAvailable > 0) {
+ [self suspendReceive6Source];
+ }
+
+ return;
+ }
+
+ if ((flags & kReceiveOnce) && (pendingFilterOperations > 0))
+ {
+ LogVerbose(@"Receiving is temporarily paused (pending filter operations)...");
+
+ if (socket4FDBytesAvailable > 0) {
+ [self suspendReceive4Source];
+ }
+ if (socket6FDBytesAvailable > 0) {
+ [self suspendReceive6Source];
+ }
+
+ return;
+ }
+
+ if ((socket4FDBytesAvailable == 0) && (socket6FDBytesAvailable == 0))
+ {
+ LogVerbose(@"No data available to receive...");
+
+ if (socket4FDBytesAvailable == 0) {
+ [self resumeReceive4Source];
+ }
+ if (socket6FDBytesAvailable == 0) {
+ [self resumeReceive6Source];
+ }
+
+ return;
+ }
+
+ // Figure out if we should receive on socket4 or socket6
+
+ BOOL doReceive4;
+
+ if (flags & kDidConnect)
+ {
+ // Connected socket
+
+ doReceive4 = (socket4FD != SOCKET_NULL);
+ }
+ else
+ {
+ // Non-Connected socket
+
+ if (socket4FDBytesAvailable > 0)
+ {
+ if (socket6FDBytesAvailable > 0)
+ {
+ // Bytes available on socket4 & socket6
+
+ doReceive4 = (flags & kFlipFlop) ? YES : NO;
+
+ flags ^= kFlipFlop; // flags = flags xor kFlipFlop; (toggle flip flop bit)
+ }
+ else {
+ // Bytes available on socket4, but not socket6
+ doReceive4 = YES;
+ }
+ }
+ else {
+ // Bytes available on socket6, but not socket4
+ doReceive4 = NO;
+ }
+ }
+
+ // Perform socket IO
+
+ ssize_t result = 0;
+
+ NSData *data = nil;
+ NSData *addr4 = nil;
+ NSData *addr6 = nil;
+
+ if (doReceive4)
+ {
+ NSAssert(socket4FDBytesAvailable > 0, @"Invalid logic");
+ LogVerbose(@"Receiving on IPv4");
+
+ struct sockaddr_in sockaddr4;
+ socklen_t sockaddr4len = sizeof(sockaddr4);
+
+ // #222: GCD does not necessarily return the size of an entire UDP packet
+ // from dispatch_source_get_data(), so we must use the maximum packet size.
+ size_t bufSize = max4ReceiveSize;
+ void *buf = malloc(bufSize);
+
+ result = recvfrom(socket4FD, buf, bufSize, 0, (struct sockaddr *)&sockaddr4, &sockaddr4len);
+ LogVerbose(@"recvfrom(socket4FD) = %i", (int)result);
+
+ if (result > 0)
+ {
+ if ((size_t)result >= socket4FDBytesAvailable)
+ socket4FDBytesAvailable = 0;
+ else
+ socket4FDBytesAvailable -= result;
+
+ if ((size_t)result != bufSize) {
+ buf = realloc(buf, result);
+ }
+
+ data = [NSData dataWithBytesNoCopy:buf length:result freeWhenDone:YES];
+ addr4 = [NSData dataWithBytes:&sockaddr4 length:sockaddr4len];
+ }
+ else
+ {
+ LogVerbose(@"recvfrom(socket4FD) = %@", [self errnoError]);
+ socket4FDBytesAvailable = 0;
+ free(buf);
+ }
+ }
+ else
+ {
+ NSAssert(socket6FDBytesAvailable > 0, @"Invalid logic");
+ LogVerbose(@"Receiving on IPv6");
+
+ struct sockaddr_in6 sockaddr6;
+ socklen_t sockaddr6len = sizeof(sockaddr6);
+
+ // #222: GCD does not necessarily return the size of an entire UDP packet
+ // from dispatch_source_get_data(), so we must use the maximum packet size.
+ size_t bufSize = max6ReceiveSize;
+ void *buf = malloc(bufSize);
+
+ result = recvfrom(socket6FD, buf, bufSize, 0, (struct sockaddr *)&sockaddr6, &sockaddr6len);
+ LogVerbose(@"recvfrom(socket6FD) -> %i", (int)result);
+
+ if (result > 0)
+ {
+ if ((size_t)result >= socket6FDBytesAvailable)
+ socket6FDBytesAvailable = 0;
+ else
+ socket6FDBytesAvailable -= result;
+
+ if ((size_t)result != bufSize) {
+ buf = realloc(buf, result);
+ }
+
+ data = [NSData dataWithBytesNoCopy:buf length:result freeWhenDone:YES];
+ addr6 = [NSData dataWithBytes:&sockaddr6 length:sockaddr6len];
+ }
+ else
+ {
+ LogVerbose(@"recvfrom(socket6FD) = %@", [self errnoError]);
+ socket6FDBytesAvailable = 0;
+ free(buf);
+ }
+ }
+
+
+ BOOL waitingForSocket = NO;
+ BOOL notifiedDelegate = NO;
+ BOOL ignored = NO;
+
+ NSError *socketError = nil;
+
+ if (result == 0)
+ {
+ waitingForSocket = YES;
+ }
+ else if (result < 0)
+ {
+ if (errno == EAGAIN)
+ waitingForSocket = YES;
+ else
+ socketError = [self errnoErrorWithReason:@"Error in recvfrom() function"];
+ }
+ else
+ {
+ if (flags & kDidConnect)
+ {
+ if (addr4 && ![self isConnectedToAddress4:addr4])
+ ignored = YES;
+ if (addr6 && ![self isConnectedToAddress6:addr6])
+ ignored = YES;
+ }
+
+ NSData *addr = (addr4 != nil) ? addr4 : addr6;
+
+ if (!ignored)
+ {
+ if (receiveFilterBlock && receiveFilterQueue)
+ {
+ // Run data through filter, and if approved, notify delegate
+
+ __block id filterContext = nil;
+ __block BOOL allowed = NO;
+
+ if (receiveFilterAsync)
+ {
+ pendingFilterOperations++;
+ dispatch_async(receiveFilterQueue, ^{ @autoreleasepool {
+
+ allowed = receiveFilterBlock(data, addr, &filterContext);
+
+ // Transition back to socketQueue to get the current delegate / delegateQueue
+ dispatch_async(socketQueue, ^{ @autoreleasepool {
+
+ pendingFilterOperations--;
+
+ if (allowed)
+ {
+ [self notifyDidReceiveData:data fromAddress:addr withFilterContext:filterContext];
+ }
+ else
+ {
+ LogVerbose(@"received packet silently dropped by receiveFilter");
+ }
+
+ if (flags & kReceiveOnce)
+ {
+ if (allowed)
+ {
+ // The delegate has been notified,
+ // so our receive once operation has completed.
+ flags &= ~kReceiveOnce;
+ }
+ else if (pendingFilterOperations == 0)
+ {
+ // All pending filter operations have completed,
+ // and none were allowed through.
+ // Our receive once operation hasn't completed yet.
+ [self doReceive];
+ }
+ }
+ }});
+ }});
+ }
+ else // if (!receiveFilterAsync)
+ {
+ dispatch_sync(receiveFilterQueue, ^{ @autoreleasepool {
+
+ allowed = receiveFilterBlock(data, addr, &filterContext);
+ }});
+
+ if (allowed)
+ {
+ [self notifyDidReceiveData:data fromAddress:addr withFilterContext:filterContext];
+ notifiedDelegate = YES;
+ }
+ else
+ {
+ LogVerbose(@"received packet silently dropped by receiveFilter");
+ ignored = YES;
+ }
+ }
+ }
+ else // if (!receiveFilterBlock || !receiveFilterQueue)
+ {
+ [self notifyDidReceiveData:data fromAddress:addr withFilterContext:nil];
+ notifiedDelegate = YES;
+ }
+ }
+ }
+
+ if (waitingForSocket)
+ {
+ // Wait for a notification of available data.
+
+ if (socket4FDBytesAvailable == 0) {
+ [self resumeReceive4Source];
+ }
+ if (socket6FDBytesAvailable == 0) {
+ [self resumeReceive6Source];
+ }
+ }
+ else if (socketError)
+ {
+ [self closeWithError:socketError];
+ }
+ else
+ {
+ if (flags & kReceiveContinuous)
+ {
+ // Continuous receive mode
+ [self doReceive];
+ }
+ else
+ {
+ // One-at-a-time receive mode
+ if (notifiedDelegate)
+ {
+ // The delegate has been notified (no set filter).
+ // So our receive once operation has completed.
+ flags &= ~kReceiveOnce;
+ }
+ else if (ignored)
+ {
+ [self doReceive];
+ }
+ else
+ {
+ // Waiting on asynchronous receive filter...
+ }
+ }
+ }
+}
+
+- (void)doReceiveEOF
+{
+ LogTrace();
+
+ [self closeWithError:[self socketClosedError]];
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Closing
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+- (void)closeWithError:(NSError *)error
+{
+ LogVerbose(@"closeWithError: %@", error);
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ if (currentSend) [self endCurrentSend];
+
+ [sendQueue removeAllObjects];
+
+ // If a socket has been created, we should notify the delegate.
+ BOOL shouldCallDelegate = (flags & kDidCreateSockets) ? YES : NO;
+
+ // Close all sockets, send/receive sources, cfstreams, etc
+#if TARGET_OS_IPHONE
+ [self removeStreamsFromRunLoop];
+ [self closeReadAndWriteStreams];
+#endif
+ [self closeSockets];
+
+ // Clear all flags (config remains as is)
+ flags = 0;
+
+ if (shouldCallDelegate)
+ {
+ [self notifyDidCloseWithError:error];
+ }
+}
+
+- (void)close
+{
+ LogTrace();
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ [self closeWithError:nil];
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+}
+
+- (void)closeAfterSending
+{
+ LogTrace();
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ flags |= kCloseAfterSends;
+
+ if (currentSend == nil && [sendQueue count] == 0)
+ {
+ [self closeWithError:nil];
+ }
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark CFStream
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+#if TARGET_OS_IPHONE
+
+static NSThread *listenerThread;
+
++ (void)ignore:(id)_
+{}
+
++ (void)startListenerThreadIfNeeded
+{
+ static dispatch_once_t predicate;
+ dispatch_once(&predicate, ^{
+
+ listenerThread = [[NSThread alloc] initWithTarget:self
+ selector:@selector(listenerThread)
+ object:nil];
+ [listenerThread start];
+ });
+}
+
++ (void)listenerThread
+{
+ @autoreleasepool {
+
+ [[NSThread currentThread] setName:GCDAsyncUdpSocketThreadName];
+
+ LogInfo(@"ListenerThread: Started");
+
+ // We can't run the run loop unless it has an associated input source or a timer.
+ // So we'll just create a timer that will never fire - unless the server runs for a decades.
+ [NSTimer scheduledTimerWithTimeInterval:[[NSDate distantFuture] timeIntervalSinceNow]
+ target:self
+ selector:@selector(ignore:)
+ userInfo:nil
+ repeats:YES];
+
+ [[NSRunLoop currentRunLoop] run];
+
+ LogInfo(@"ListenerThread: Stopped");
+ }
+}
+
++ (void)addStreamListener:(GCDAsyncUdpSocket *)asyncUdpSocket
+{
+ LogTrace();
+ NSAssert([NSThread currentThread] == listenerThread, @"Invoked on wrong thread");
+
+ CFRunLoopRef runLoop = CFRunLoopGetCurrent();
+
+ if (asyncUdpSocket->readStream4)
+ CFReadStreamScheduleWithRunLoop(asyncUdpSocket->readStream4, runLoop, kCFRunLoopDefaultMode);
+
+ if (asyncUdpSocket->readStream6)
+ CFReadStreamScheduleWithRunLoop(asyncUdpSocket->readStream6, runLoop, kCFRunLoopDefaultMode);
+
+ if (asyncUdpSocket->writeStream4)
+ CFWriteStreamScheduleWithRunLoop(asyncUdpSocket->writeStream4, runLoop, kCFRunLoopDefaultMode);
+
+ if (asyncUdpSocket->writeStream6)
+ CFWriteStreamScheduleWithRunLoop(asyncUdpSocket->writeStream6, runLoop, kCFRunLoopDefaultMode);
+}
+
++ (void)removeStreamListener:(GCDAsyncUdpSocket *)asyncUdpSocket
+{
+ LogTrace();
+ NSAssert([NSThread currentThread] == listenerThread, @"Invoked on wrong thread");
+
+ CFRunLoopRef runLoop = CFRunLoopGetCurrent();
+
+ if (asyncUdpSocket->readStream4)
+ CFReadStreamUnscheduleFromRunLoop(asyncUdpSocket->readStream4, runLoop, kCFRunLoopDefaultMode);
+
+ if (asyncUdpSocket->readStream6)
+ CFReadStreamUnscheduleFromRunLoop(asyncUdpSocket->readStream6, runLoop, kCFRunLoopDefaultMode);
+
+ if (asyncUdpSocket->writeStream4)
+ CFWriteStreamUnscheduleFromRunLoop(asyncUdpSocket->writeStream4, runLoop, kCFRunLoopDefaultMode);
+
+ if (asyncUdpSocket->writeStream6)
+ CFWriteStreamUnscheduleFromRunLoop(asyncUdpSocket->writeStream6, runLoop, kCFRunLoopDefaultMode);
+}
+
+static void CFReadStreamCallback(CFReadStreamRef stream, CFStreamEventType type, void *pInfo)
+{
+ @autoreleasepool {
+ GCDAsyncUdpSocket *asyncUdpSocket = (__bridge GCDAsyncUdpSocket *)pInfo;
+
+ switch(type)
+ {
+ case kCFStreamEventOpenCompleted:
+ {
+ LogCVerbose(@"CFReadStreamCallback - Open");
+ break;
+ }
+ case kCFStreamEventHasBytesAvailable:
+ {
+ LogCVerbose(@"CFReadStreamCallback - HasBytesAvailable");
+ break;
+ }
+ case kCFStreamEventErrorOccurred:
+ case kCFStreamEventEndEncountered:
+ {
+ NSError *error = (__bridge_transfer NSError *)CFReadStreamCopyError(stream);
+ if (error == nil && type == kCFStreamEventEndEncountered)
+ {
+ error = [asyncUdpSocket socketClosedError];
+ }
+
+ dispatch_async(asyncUdpSocket->socketQueue, ^{ @autoreleasepool {
+
+ LogCVerbose(@"CFReadStreamCallback - %@",
+ (type == kCFStreamEventErrorOccurred) ? @"Error" : @"EndEncountered");
+
+ if (stream != asyncUdpSocket->readStream4 &&
+ stream != asyncUdpSocket->readStream6 )
+ {
+ LogCVerbose(@"CFReadStreamCallback - Ignored");
+ return_from_block;
+ }
+
+ [asyncUdpSocket closeWithError:error];
+
+ }});
+
+ break;
+ }
+ default:
+ {
+ LogCError(@"CFReadStreamCallback - UnknownType: %i", (int)type);
+ }
+ }
+ }
+}
+
+static void CFWriteStreamCallback(CFWriteStreamRef stream, CFStreamEventType type, void *pInfo)
+{
+ @autoreleasepool {
+ GCDAsyncUdpSocket *asyncUdpSocket = (__bridge GCDAsyncUdpSocket *)pInfo;
+
+ switch(type)
+ {
+ case kCFStreamEventOpenCompleted:
+ {
+ LogCVerbose(@"CFWriteStreamCallback - Open");
+ break;
+ }
+ case kCFStreamEventCanAcceptBytes:
+ {
+ LogCVerbose(@"CFWriteStreamCallback - CanAcceptBytes");
+ break;
+ }
+ case kCFStreamEventErrorOccurred:
+ case kCFStreamEventEndEncountered:
+ {
+ NSError *error = (__bridge_transfer NSError *)CFWriteStreamCopyError(stream);
+ if (error == nil && type == kCFStreamEventEndEncountered)
+ {
+ error = [asyncUdpSocket socketClosedError];
+ }
+
+ dispatch_async(asyncUdpSocket->socketQueue, ^{ @autoreleasepool {
+
+ LogCVerbose(@"CFWriteStreamCallback - %@",
+ (type == kCFStreamEventErrorOccurred) ? @"Error" : @"EndEncountered");
+
+ if (stream != asyncUdpSocket->writeStream4 &&
+ stream != asyncUdpSocket->writeStream6 )
+ {
+ LogCVerbose(@"CFWriteStreamCallback - Ignored");
+ return_from_block;
+ }
+
+ [asyncUdpSocket closeWithError:error];
+
+ }});
+
+ break;
+ }
+ default:
+ {
+ LogCError(@"CFWriteStreamCallback - UnknownType: %i", (int)type);
+ }
+ }
+ }
+}
+
+- (BOOL)createReadAndWriteStreams:(NSError **)errPtr
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ NSError *err = nil;
+
+ if (readStream4 || writeStream4 || readStream6 || writeStream6)
+ {
+ // Streams already created
+ return YES;
+ }
+
+ if (socket4FD == SOCKET_NULL && socket6FD == SOCKET_NULL)
+ {
+ err = [self otherError:@"Cannot create streams without a file descriptor"];
+ goto Failed;
+ }
+
+ // Create streams
+
+ LogVerbose(@"Creating read and write stream(s)...");
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ CFStreamCreatePairWithSocket(NULL, (CFSocketNativeHandle)socket4FD, &readStream4, &writeStream4);
+ if (!readStream4 || !writeStream4)
+ {
+ err = [self otherError:@"Error in CFStreamCreatePairWithSocket() [IPv4]"];
+ goto Failed;
+ }
+ }
+
+ if (socket6FD != SOCKET_NULL)
+ {
+ CFStreamCreatePairWithSocket(NULL, (CFSocketNativeHandle)socket6FD, &readStream6, &writeStream6);
+ if (!readStream6 || !writeStream6)
+ {
+ err = [self otherError:@"Error in CFStreamCreatePairWithSocket() [IPv6]"];
+ goto Failed;
+ }
+ }
+
+ // Ensure the CFStream's don't close our underlying socket
+
+ CFReadStreamSetProperty(readStream4, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanFalse);
+ CFWriteStreamSetProperty(writeStream4, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanFalse);
+
+ CFReadStreamSetProperty(readStream6, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanFalse);
+ CFWriteStreamSetProperty(writeStream6, kCFStreamPropertyShouldCloseNativeSocket, kCFBooleanFalse);
+
+ return YES;
+
+Failed:
+ if (readStream4)
+ {
+ CFReadStreamClose(readStream4);
+ CFRelease(readStream4);
+ readStream4 = NULL;
+ }
+ if (writeStream4)
+ {
+ CFWriteStreamClose(writeStream4);
+ CFRelease(writeStream4);
+ writeStream4 = NULL;
+ }
+ if (readStream6)
+ {
+ CFReadStreamClose(readStream6);
+ CFRelease(readStream6);
+ readStream6 = NULL;
+ }
+ if (writeStream6)
+ {
+ CFWriteStreamClose(writeStream6);
+ CFRelease(writeStream6);
+ writeStream6 = NULL;
+ }
+
+ if (errPtr)
+ *errPtr = err;
+
+ return NO;
+}
+
+- (BOOL)registerForStreamCallbacks:(NSError **)errPtr
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert(readStream4 || writeStream4 || readStream6 || writeStream6, @"Read/Write streams are null");
+
+ NSError *err = nil;
+
+ streamContext.version = 0;
+ streamContext.info = (__bridge void *)self;
+ streamContext.retain = nil;
+ streamContext.release = nil;
+ streamContext.copyDescription = nil;
+
+ CFOptionFlags readStreamEvents = kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered;
+ CFOptionFlags writeStreamEvents = kCFStreamEventErrorOccurred | kCFStreamEventEndEncountered;
+
+// readStreamEvents |= (kCFStreamEventOpenCompleted | kCFStreamEventHasBytesAvailable);
+// writeStreamEvents |= (kCFStreamEventOpenCompleted | kCFStreamEventCanAcceptBytes);
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ if (readStream4 == NULL || writeStream4 == NULL)
+ {
+ err = [self otherError:@"Read/Write stream4 is null"];
+ goto Failed;
+ }
+
+ BOOL r1 = CFReadStreamSetClient(readStream4, readStreamEvents, &CFReadStreamCallback, &streamContext);
+ BOOL r2 = CFWriteStreamSetClient(writeStream4, writeStreamEvents, &CFWriteStreamCallback, &streamContext);
+
+ if (!r1 || !r2)
+ {
+ err = [self otherError:@"Error in CFStreamSetClient(), [IPv4]"];
+ goto Failed;
+ }
+ }
+
+ if (socket6FD != SOCKET_NULL)
+ {
+ if (readStream6 == NULL || writeStream6 == NULL)
+ {
+ err = [self otherError:@"Read/Write stream6 is null"];
+ goto Failed;
+ }
+
+ BOOL r1 = CFReadStreamSetClient(readStream6, readStreamEvents, &CFReadStreamCallback, &streamContext);
+ BOOL r2 = CFWriteStreamSetClient(writeStream6, writeStreamEvents, &CFWriteStreamCallback, &streamContext);
+
+ if (!r1 || !r2)
+ {
+ err = [self otherError:@"Error in CFStreamSetClient() [IPv6]"];
+ goto Failed;
+ }
+ }
+
+ return YES;
+
+Failed:
+ if (readStream4) {
+ CFReadStreamSetClient(readStream4, kCFStreamEventNone, NULL, NULL);
+ }
+ if (writeStream4) {
+ CFWriteStreamSetClient(writeStream4, kCFStreamEventNone, NULL, NULL);
+ }
+ if (readStream6) {
+ CFReadStreamSetClient(readStream6, kCFStreamEventNone, NULL, NULL);
+ }
+ if (writeStream6) {
+ CFWriteStreamSetClient(writeStream6, kCFStreamEventNone, NULL, NULL);
+ }
+
+ if (errPtr) *errPtr = err;
+ return NO;
+}
+
+- (BOOL)addStreamsToRunLoop:(NSError **)errPtr
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert(readStream4 || writeStream4 || readStream6 || writeStream6, @"Read/Write streams are null");
+
+ if (!(flags & kAddedStreamListener))
+ {
+ [[self class] startListenerThreadIfNeeded];
+ [[self class] performSelector:@selector(addStreamListener:)
+ onThread:listenerThread
+ withObject:self
+ waitUntilDone:YES];
+
+ flags |= kAddedStreamListener;
+ }
+
+ return YES;
+}
+
+- (BOOL)openStreams:(NSError **)errPtr
+{
+ LogTrace();
+
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+ NSAssert(readStream4 || writeStream4 || readStream6 || writeStream6, @"Read/Write streams are null");
+
+ NSError *err = nil;
+
+ if (socket4FD != SOCKET_NULL)
+ {
+ BOOL r1 = CFReadStreamOpen(readStream4);
+ BOOL r2 = CFWriteStreamOpen(writeStream4);
+
+ if (!r1 || !r2)
+ {
+ err = [self otherError:@"Error in CFStreamOpen() [IPv4]"];
+ goto Failed;
+ }
+ }
+
+ if (socket6FD != SOCKET_NULL)
+ {
+ BOOL r1 = CFReadStreamOpen(readStream6);
+ BOOL r2 = CFWriteStreamOpen(writeStream6);
+
+ if (!r1 || !r2)
+ {
+ err = [self otherError:@"Error in CFStreamOpen() [IPv6]"];
+ goto Failed;
+ }
+ }
+
+ return YES;
+
+Failed:
+ if (errPtr) *errPtr = err;
+ return NO;
+}
+
+- (void)removeStreamsFromRunLoop
+{
+ LogTrace();
+ NSAssert(dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey), @"Must be dispatched on socketQueue");
+
+ if (flags & kAddedStreamListener)
+ {
+ [[self class] performSelector:@selector(removeStreamListener:)
+ onThread:listenerThread
+ withObject:self
+ waitUntilDone:YES];
+
+ flags &= ~kAddedStreamListener;
+ }
+}
+
+- (void)closeReadAndWriteStreams
+{
+ LogTrace();
+
+ if (readStream4)
+ {
+ CFReadStreamSetClient(readStream4, kCFStreamEventNone, NULL, NULL);
+ CFReadStreamClose(readStream4);
+ CFRelease(readStream4);
+ readStream4 = NULL;
+ }
+ if (writeStream4)
+ {
+ CFWriteStreamSetClient(writeStream4, kCFStreamEventNone, NULL, NULL);
+ CFWriteStreamClose(writeStream4);
+ CFRelease(writeStream4);
+ writeStream4 = NULL;
+ }
+ if (readStream6)
+ {
+ CFReadStreamSetClient(readStream6, kCFStreamEventNone, NULL, NULL);
+ CFReadStreamClose(readStream6);
+ CFRelease(readStream6);
+ readStream6 = NULL;
+ }
+ if (writeStream6)
+ {
+ CFWriteStreamSetClient(writeStream6, kCFStreamEventNone, NULL, NULL);
+ CFWriteStreamClose(writeStream6);
+ CFRelease(writeStream6);
+ writeStream6 = NULL;
+ }
+}
+
+#endif
+
+- (void)applicationWillEnterForeground:(NSNotification *)notification
+{
+ LogTrace();
+
+ // If the application was backgrounded, then iOS may have shut down our sockets.
+ // So we take a quick look to see if any of them received an EOF.
+
+ dispatch_block_t block = ^{ @autoreleasepool {
+
+ [self resumeReceive4Source];
+ [self resumeReceive6Source];
+ }};
+
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_async(socketQueue, block);
+}
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Advanced
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
+/**
+ * See header file for big discussion of this method.
+ **/
+- (void)markSocketQueueTargetQueue:(dispatch_queue_t)socketNewTargetQueue
+{
+ void *nonNullUnusedPointer = (__bridge void *)self;
+ dispatch_queue_set_specific(socketNewTargetQueue, IsOnSocketQueueOrTargetQueueKey, nonNullUnusedPointer, NULL);
+}
+
+/**
+ * See header file for big discussion of this method.
+ **/
+- (void)unmarkSocketQueueTargetQueue:(dispatch_queue_t)socketOldTargetQueue
+{
+ dispatch_queue_set_specific(socketOldTargetQueue, IsOnSocketQueueOrTargetQueueKey, NULL, NULL);
+}
+
+- (void)performBlock:(dispatch_block_t)block
+{
+ if (dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ block();
+ else
+ dispatch_sync(socketQueue, block);
+}
+
+- (int)socketFD
+{
+ if (! dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@: %@ - Method only available from within the context of a performBlock: invocation",
+ THIS_FILE, THIS_METHOD);
+ return SOCKET_NULL;
+ }
+
+ if (socket4FD != SOCKET_NULL)
+ return socket4FD;
+ else
+ return socket6FD;
+}
+
+- (int)socket4FD
+{
+ if (! dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@: %@ - Method only available from within the context of a performBlock: invocation",
+ THIS_FILE, THIS_METHOD);
+ return SOCKET_NULL;
+ }
+
+ return socket4FD;
+}
+
+- (int)socket6FD
+{
+ if (! dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@: %@ - Method only available from within the context of a performBlock: invocation",
+ THIS_FILE, THIS_METHOD);
+ return SOCKET_NULL;
+ }
+
+ return socket6FD;
+}
+
+#if TARGET_OS_IPHONE
+
+- (CFReadStreamRef)readStream
+{
+ if (! dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@: %@ - Method only available from within the context of a performBlock: invocation",
+ THIS_FILE, THIS_METHOD);
+ return NULL;
+ }
+
+ NSError *err = nil;
+ if (![self createReadAndWriteStreams:&err])
+ {
+ LogError(@"Error creating CFStream(s): %@", err);
+ return NULL;
+ }
+
+ // Todo...
+
+ if (readStream4)
+ return readStream4;
+ else
+ return readStream6;
+}
+
+- (CFWriteStreamRef)writeStream
+{
+ if (! dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@: %@ - Method only available from within the context of a performBlock: invocation",
+ THIS_FILE, THIS_METHOD);
+ return NULL;
+ }
+
+ NSError *err = nil;
+ if (![self createReadAndWriteStreams:&err])
+ {
+ LogError(@"Error creating CFStream(s): %@", err);
+ return NULL;
+ }
+
+ if (writeStream4)
+ return writeStream4;
+ else
+ return writeStream6;
+}
+
+- (BOOL)enableBackgroundingOnSockets
+{
+ if (! dispatch_get_specific(IsOnSocketQueueOrTargetQueueKey))
+ {
+ LogWarn(@"%@: %@ - Method only available from within the context of a performBlock: invocation",
+ THIS_FILE, THIS_METHOD);
+ return NO;
+ }
+
+ // Why is this commented out?
+ // See comments below.
+
+// NSError *err = nil;
+// if (![self createReadAndWriteStreams:&err])
+// {
+// LogError(@"Error creating CFStream(s): %@", err);
+// return NO;
+// }
+//
+// LogVerbose(@"Enabling backgrouding on socket");
+//
+// BOOL r1, r2;
+//
+// if (readStream4 && writeStream4)
+// {
+// r1 = CFReadStreamSetProperty(readStream4, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+// r2 = CFWriteStreamSetProperty(writeStream4, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+//
+// if (!r1 || !r2)
+// {
+// LogError(@"Error setting voip type (IPv4)");
+// return NO;
+// }
+// }
+//
+// if (readStream6 && writeStream6)
+// {
+// r1 = CFReadStreamSetProperty(readStream6, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+// r2 = CFWriteStreamSetProperty(writeStream6, kCFStreamNetworkServiceType, kCFStreamNetworkServiceTypeVoIP);
+//
+// if (!r1 || !r2)
+// {
+// LogError(@"Error setting voip type (IPv6)");
+// return NO;
+// }
+// }
+//
+// return YES;
+
+ // The above code will actually appear to work.
+ // The methods will return YES, and everything will appear fine.
+ //
+ // One tiny problem: the sockets will still get closed when the app gets backgrounded.
+ //
+ // Apple does not officially support backgrounding UDP sockets.
+
+ return NO;
+}
+
+#endif
+
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+#pragma mark Class Methods
+////////////////////////////////////////////////////////////////////////////////////////////////////////////////////////
+
++ (NSString *)hostFromSockaddr4:(const struct sockaddr_in *)pSockaddr4
+{
+ char addrBuf[INET_ADDRSTRLEN];
+
+ if (inet_ntop(AF_INET, &pSockaddr4->sin_addr, addrBuf, (socklen_t)sizeof(addrBuf)) == NULL)
+ {
+ addrBuf[0] = '\0';
+ }
+
+ return [NSString stringWithCString:addrBuf encoding:NSASCIIStringEncoding];
+}
+
++ (NSString *)hostFromSockaddr6:(const struct sockaddr_in6 *)pSockaddr6
+{
+ char addrBuf[INET6_ADDRSTRLEN];
+
+ if (inet_ntop(AF_INET6, &pSockaddr6->sin6_addr, addrBuf, (socklen_t)sizeof(addrBuf)) == NULL)
+ {
+ addrBuf[0] = '\0';
+ }
+
+ return [NSString stringWithCString:addrBuf encoding:NSASCIIStringEncoding];
+}
+
++ (uint16_t)portFromSockaddr4:(const struct sockaddr_in *)pSockaddr4
+{
+ return ntohs(pSockaddr4->sin_port);
+}
+
++ (uint16_t)portFromSockaddr6:(const struct sockaddr_in6 *)pSockaddr6
+{
+ return ntohs(pSockaddr6->sin6_port);
+}
+
++ (NSString *)hostFromAddress:(NSData *)address
+{
+ NSString *host = nil;
+ [self getHost:&host port:NULL family:NULL fromAddress:address];
+
+ return host;
+}
+
++ (uint16_t)portFromAddress:(NSData *)address
+{
+ uint16_t port = 0;
+ [self getHost:NULL port:&port family:NULL fromAddress:address];
+
+ return port;
+}
+
++ (int)familyFromAddress:(NSData *)address
+{
+ int af = AF_UNSPEC;
+ [self getHost:NULL port:NULL family:&af fromAddress:address];
+
+ return af;
+}
+
++ (BOOL)isIPv4Address:(NSData *)address
+{
+ int af = AF_UNSPEC;
+ [self getHost:NULL port:NULL family:&af fromAddress:address];
+
+ return (af == AF_INET);
+}
+
++ (BOOL)isIPv6Address:(NSData *)address
+{
+ int af = AF_UNSPEC;
+ [self getHost:NULL port:NULL family:&af fromAddress:address];
+
+ return (af == AF_INET6);
+}
+
++ (BOOL)getHost:(NSString **)hostPtr port:(uint16_t *)portPtr fromAddress:(NSData *)address
+{
+ return [self getHost:hostPtr port:portPtr family:NULL fromAddress:address];
+}
+
++ (BOOL)getHost:(NSString **)hostPtr port:(uint16_t *)portPtr family:(int *)afPtr fromAddress:(NSData *)address
+{
+ if ([address length] >= sizeof(struct sockaddr))
+ {
+ const struct sockaddr *addrX = (const struct sockaddr *)[address bytes];
+
+ if (addrX->sa_family == AF_INET)
+ {
+ if ([address length] >= sizeof(struct sockaddr_in))
+ {
+ const struct sockaddr_in *addr4 = (const struct sockaddr_in *)addrX;
+
+ if (hostPtr) *hostPtr = [self hostFromSockaddr4:addr4];
+ if (portPtr) *portPtr = [self portFromSockaddr4:addr4];
+ if (afPtr) *afPtr = AF_INET;
+
+ return YES;
+ }
+ }
+ else if (addrX->sa_family == AF_INET6)
+ {
+ if ([address length] >= sizeof(struct sockaddr_in6))
+ {
+ const struct sockaddr_in6 *addr6 = (const struct sockaddr_in6 *)addrX;
+
+ if (hostPtr) *hostPtr = [self hostFromSockaddr6:addr6];
+ if (portPtr) *portPtr = [self portFromSockaddr6:addr6];
+ if (afPtr) *afPtr = AF_INET6;
+
+ return YES;
+ }
+ }
+ }
+
+ if (hostPtr) *hostPtr = nil;
+ if (portPtr) *portPtr = 0;
+ if (afPtr) *afPtr = AF_UNSPEC;
+
+ return NO;
+}
+
+@end
diff --git a/SocketDemo/Utils/MJExtension/MJExtension.h b/SocketDemo/Utils/MJExtension/MJExtension.h
new file mode 100755
index 0000000..ad35d09
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJExtension.h
@@ -0,0 +1,15 @@
+//
+// MJExtension.h
+// MJExtension
+//
+// Created by mj on 14-1-15.
+// Copyright (c) 2014��� ���������. All rights reserved.
+// ������������:https://github.com/CoderMJLee/MJExtension
+// ������������:http://code4app.com/ios/%E5%AD%97%E5%85%B8-JSON-%E4%B8%8E%E6%A8%A1%E5%9E%8B%E7%9A%84%E8%BD%AC%E6%8D%A2/5339992a933bf062608b4c57
+
+#import "NSObject+MJCoding.h"
+#import "NSObject+MJProperty.h"
+#import "NSObject+MJClass.h"
+#import "NSObject+MJKeyValue.h"
+#import "NSString+MJExtension.h"
+#import "MJExtensionConst.h"
\ No newline at end of file
diff --git a/SocketDemo/Utils/MJExtension/MJExtensionConst.h b/SocketDemo/Utils/MJExtension/MJExtensionConst.h
new file mode 100755
index 0000000..ba8893a
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJExtensionConst.h
@@ -0,0 +1,88 @@
+
+#ifndef __MJExtensionConst__H__
+#define __MJExtensionConst__H__
+
+#import <Foundation/Foundation.h>
+
+// ������
+#define MJExtensionDeprecated(instead) NS_DEPRECATED(2_0, 2_0, 2_0, 2_0, instead)
+
+// ������������
+#define MJExtensionBuildError(clazz, msg) \
+NSError *error = [NSError errorWithDomain:msg code:250 userInfo:nil]; \
+[clazz setMj_error:error];
+
+// ������������
+#ifdef DEBUG
+#define MJExtensionLog(...) NSLog(__VA_ARGS__)
+#else
+#define MJExtensionLog(...)
+#endif
+
+/**
+ * ������
+ * @param condition ������
+ * @param returnValue ���������
+ */
+#define MJExtensionAssertError(condition, returnValue, clazz, msg) \
+[clazz setMj_error:nil]; \
+if ((condition) == NO) { \
+ MJExtensionBuildError(clazz, msg); \
+ return returnValue;\
+}
+
+#define MJExtensionAssert2(condition, returnValue) \
+if ((condition) == NO) return returnValue;
+
+/**
+ * ������
+ * @param condition ������
+ */
+#define MJExtensionAssert(condition) MJExtensionAssert2(condition, )
+
+/**
+ * ������
+ * @param param ������
+ * @param returnValue ���������
+ */
+#define MJExtensionAssertParamNotNil2(param, returnValue) \
+MJExtensionAssert2((param) != nil, returnValue)
+
+/**
+ * ������
+ * @param param ������
+ */
+#define MJExtensionAssertParamNotNil(param) MJExtensionAssertParamNotNil2(param, )
+
+/**
+ * ���������������������
+ */
+#define MJLogAllIvars \
+-(NSString *)description \
+{ \
+ return [self mj_keyValues].description; \
+}
+#define MJExtensionLogAllProperties MJLogAllIvars
+
+/**
+ * ������������������������
+ */
+extern NSString *const MJPropertyTypeInt;
+extern NSString *const MJPropertyTypeShort;
+extern NSString *const MJPropertyTypeFloat;
+extern NSString *const MJPropertyTypeDouble;
+extern NSString *const MJPropertyTypeLong;
+extern NSString *const MJPropertyTypeLongLong;
+extern NSString *const MJPropertyTypeChar;
+extern NSString *const MJPropertyTypeBOOL1;
+extern NSString *const MJPropertyTypeBOOL2;
+extern NSString *const MJPropertyTypePointer;
+
+extern NSString *const MJPropertyTypeIvar;
+extern NSString *const MJPropertyTypeMethod;
+extern NSString *const MJPropertyTypeBlock;
+extern NSString *const MJPropertyTypeClass;
+extern NSString *const MJPropertyTypeSEL;
+extern NSString *const MJPropertyTypeId;
+
+#endif
\ No newline at end of file
diff --git a/SocketDemo/Utils/MJExtension/MJExtensionConst.m b/SocketDemo/Utils/MJExtension/MJExtensionConst.m
new file mode 100755
index 0000000..24bcca5
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJExtensionConst.m
@@ -0,0 +1,27 @@
+#ifndef __MJExtensionConst__M__
+#define __MJExtensionConst__M__
+
+#import <Foundation/Foundation.h>
+
+/**
+ * ������������������������������������
+ */
+NSString *const MJPropertyTypeInt = @"i";
+NSString *const MJPropertyTypeShort = @"s";
+NSString *const MJPropertyTypeFloat = @"f";
+NSString *const MJPropertyTypeDouble = @"d";
+NSString *const MJPropertyTypeLong = @"l";
+NSString *const MJPropertyTypeLongLong = @"q";
+NSString *const MJPropertyTypeChar = @"c";
+NSString *const MJPropertyTypeBOOL1 = @"c";
+NSString *const MJPropertyTypeBOOL2 = @"b";
+NSString *const MJPropertyTypePointer = @"*";
+
+NSString *const MJPropertyTypeIvar = @"^{objc_ivar=}";
+NSString *const MJPropertyTypeMethod = @"^{objc_method=}";
+NSString *const MJPropertyTypeBlock = @"@?";
+NSString *const MJPropertyTypeClass = @"#";
+NSString *const MJPropertyTypeSEL = @":";
+NSString *const MJPropertyTypeId = @"@";
+
+#endif
\ No newline at end of file
diff --git a/SocketDemo/Utils/MJExtension/MJFoundation.h b/SocketDemo/Utils/MJExtension/MJFoundation.h
new file mode 100755
index 0000000..8a0e457
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJFoundation.h
@@ -0,0 +1,13 @@
+//
+// MJFoundation.h
+// MJExtensionExample
+//
+// Created by MJ Lee on 14/7/16.
+// Copyright (c) 2014��� ���������. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+@interface MJFoundation : NSObject
++ (BOOL)isClassFromFoundation:(Class)c;
+@end
diff --git a/SocketDemo/Utils/MJExtension/MJFoundation.m b/SocketDemo/Utils/MJExtension/MJFoundation.m
new file mode 100755
index 0000000..23a7d8c
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJFoundation.m
@@ -0,0 +1,48 @@
+//
+// MJFoundation.m
+// MJExtensionExample
+//
+// Created by MJ Lee on 14/7/16.
+// Copyright (c) 2014��� ���������. All rights reserved.
+//
+
+#import "MJFoundation.h"
+#import "MJExtensionConst.h"
+#import <CoreData/CoreData.h>
+
+static NSSet *foundationClasses_;
+
+@implementation MJFoundation
+
++ (NSSet *)foundationClasses
+{
+ if (foundationClasses_ == nil) {
+ // ���������������NSObject������������������������������������������NSObject������������������NSObject������������������
+ foundationClasses_ = [NSSet setWithObjects:
+ [NSURL class],
+ [NSDate class],
+ [NSValue class],
+ [NSData class],
+ [NSError class],
+ [NSArray class],
+ [NSDictionary class],
+ [NSString class],
+ [NSAttributedString class], nil];
+ }
+ return foundationClasses_;
+}
+
++ (BOOL)isClassFromFoundation:(Class)c
+{
+ if (c == [NSObject class] || c == [NSManagedObject class]) return YES;
+
+ __block BOOL result = NO;
+ [[self foundationClasses] enumerateObjectsUsingBlock:^(Class foundationClass, BOOL *stop) {
+ if ([c isSubclassOfClass:foundationClass]) {
+ result = YES;
+ *stop = YES;
+ }
+ }];
+ return result;
+}
+@end
diff --git a/SocketDemo/Utils/MJExtension/MJProperty.h b/SocketDemo/Utils/MJExtension/MJProperty.h
new file mode 100755
index 0000000..90ac6bc
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJProperty.h
@@ -0,0 +1,53 @@
+//
+// MJProperty.h
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/4/17.
+// Copyright (c) 2015��� ���������. All rights reserved.
+// ������������������������
+
+#import <Foundation/Foundation.h>
+#import <objc/runtime.h>
+#import "MJPropertyType.h"
+#import "MJPropertyKey.h"
+
+/**
+ * ������������������
+ */
+@interface MJProperty : NSObject
+/** ������������ */
+@property (nonatomic, assign) objc_property_t property;
+/** ��������������������� */
+@property (nonatomic, readonly) NSString *name;
+
+/** ��������������������� */
+@property (nonatomic, readonly) MJPropertyType *type;
+/** ��������������������������������������������������� */
+@property (nonatomic, assign) Class srcClass;
+
+/**** ��������������������� - ������������������������������������������originKey���propertyKeys���objectClassInArray��� ****/
+/** ������������������key */
+- (void)setOriginKey:(id)originKey forClass:(Class)c;
+/** ���������������������������key���������������������������������������������MJPropertyKey��������� */
+- (NSArray *)propertyKeysForClass:(Class)c;
+
+/** ������������������������������ */
+- (void)setObjectClassInArray:(Class)objectClass forClass:(Class)c;
+- (Class)objectClassInArrayForClass:(Class)c;
+/**** ��������������������� - ������������������������������������������key���keys���objectClassInArray��� ****/
+
+/**
+ * ������object������������������
+ */
+- (void)setValue:(id)value forObject:(id)object;
+/**
+ * ������object������������������
+ */
+- (id)valueForObject:(id)object;
+
+/**
+ * ���������
+ */
++ (instancetype)cachedPropertyWithProperty:(objc_property_t)property;
+
+@end
diff --git a/SocketDemo/Utils/MJExtension/MJProperty.m b/SocketDemo/Utils/MJExtension/MJProperty.m
new file mode 100755
index 0000000..2489d9a
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJProperty.m
@@ -0,0 +1,177 @@
+//
+// MJProperty.m
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/4/17.
+// Copyright (c) 2015��� ���������. All rights reserved.
+//
+
+#import "MJProperty.h"
+#import "MJFoundation.h"
+#import "MJExtensionConst.h"
+#import <objc/message.h>
+
+@interface MJProperty()
+@property (strong, nonatomic) NSMutableDictionary *propertyKeysDict;
+@property (strong, nonatomic) NSMutableDictionary *objectClassInArrayDict;
+@end
+
+@implementation MJProperty
+
+#pragma mark - ���������
+- (NSMutableDictionary *)propertyKeysDict
+{
+ if (!_propertyKeysDict) {
+ _propertyKeysDict = [NSMutableDictionary dictionary];
+ }
+ return _propertyKeysDict;
+}
+
+- (NSMutableDictionary *)objectClassInArrayDict
+{
+ if (!_objectClassInArrayDict) {
+ _objectClassInArrayDict = [NSMutableDictionary dictionary];
+ }
+ return _objectClassInArrayDict;
+}
+
+#pragma mark - ������
++ (instancetype)cachedPropertyWithProperty:(objc_property_t)property
+{
+ MJProperty *propertyObj = objc_getAssociatedObject(self, property);
+ if (propertyObj == nil) {
+ propertyObj = [[self alloc] init];
+ propertyObj.property = property;
+ objc_setAssociatedObject(self, property, propertyObj, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+ }
+ return propertyObj;
+}
+
+#pragma mark - ������������
+- (void)setProperty:(objc_property_t)property
+{
+ _property = property;
+
+ MJExtensionAssertParamNotNil(property);
+
+ // 1.���������
+ _name = @(property_getName(property));
+
+ // 2.������������
+ NSString *attrs = @(property_getAttributes(property));
+ NSUInteger dotLoc = [attrs rangeOfString:@","].location;
+ NSString *code = nil;
+ NSUInteger loc = 1;
+ if (dotLoc == NSNotFound) { // ������,
+ code = [attrs substringFromIndex:loc];
+ } else {
+ code = [attrs substringWithRange:NSMakeRange(loc, dotLoc - loc)];
+ }
+ _type = [MJPropertyType cachedTypeWithCode:code];
+}
+
+/**
+ * ������������������������
+ */
+- (id)valueForObject:(id)object
+{
+ if (self.type.KVCDisabled) return [NSNull null];
+ return [object valueForKey:self.name];
+}
+
+/**
+ * ������������������������
+ */
+- (void)setValue:(id)value forObject:(id)object
+{
+ if (self.type.KVCDisabled || value == nil) return;
+ [object setValue:value forKey:self.name];
+}
+
+/**
+ * ���������������key���������������keys
+ */
+- (NSArray *)propertyKeysWithStringKey:(NSString *)stringKey
+{
+ if (stringKey.length == 0) return nil;
+
+ NSMutableArray *propertyKeys = [NSMutableArray array];
+ // ���������������������
+ NSArray *oldKeys = [stringKey componentsSeparatedByString:@"."];
+
+ for (NSString *oldKey in oldKeys) {
+ NSUInteger start = [oldKey rangeOfString:@"["].location;
+ if (start != NSNotFound) { // ������������key
+ NSString *prefixKey = [oldKey substringToIndex:start];
+ NSString *indexKey = prefixKey;
+ if (prefixKey.length) {
+ MJPropertyKey *propertyKey = [[MJPropertyKey alloc] init];
+ propertyKey.name = prefixKey;
+ [propertyKeys addObject:propertyKey];
+
+ indexKey = [oldKey stringByReplacingOccurrencesOfString:prefixKey withString:@""];
+ }
+
+ /** ������������ **/
+ // ������
+ NSArray *cmps = [[indexKey stringByReplacingOccurrencesOfString:@"[" withString:@""] componentsSeparatedByString:@"]"];
+ for (NSInteger i = 0; i<cmps.count - 1; i++) {
+ MJPropertyKey *subPropertyKey = [[MJPropertyKey alloc] init];
+ subPropertyKey.type = MJPropertyKeyTypeArray;
+ subPropertyKey.name = cmps[i];
+ [propertyKeys addObject:subPropertyKey];
+ }
+ } else { // ���������������key
+ MJPropertyKey *propertyKey = [[MJPropertyKey alloc] init];
+ propertyKey.name = oldKey;
+ [propertyKeys addObject:propertyKey];
+ }
+ }
+
+ return propertyKeys;
+}
+
+/** ���������������������key */
+- (void)setOriginKey:(id)originKey forClass:(Class)c
+{
+ if ([originKey isKindOfClass:[NSString class]]) { // ������������������key
+ NSArray *propertyKeys = [self propertyKeysWithStringKey:originKey];
+ if (propertyKeys.count) {
+ [self setPorpertyKeys:@[propertyKeys] forClass:c];
+ }
+ } else if ([originKey isKindOfClass:[NSArray class]]) {
+ NSMutableArray *keyses = [NSMutableArray array];
+ for (NSString *stringKey in originKey) {
+ NSArray *propertyKeys = [self propertyKeysWithStringKey:stringKey];
+ if (propertyKeys.count) {
+ [keyses addObject:propertyKeys];
+ }
+ }
+ if (keyses.count) {
+ [self setPorpertyKeys:keyses forClass:c];
+ }
+ }
+}
+
+/** ���������������������������key */
+- (void)setPorpertyKeys:(NSArray *)propertyKeys forClass:(Class)c
+{
+ if (propertyKeys.count == 0) return;
+ self.propertyKeysDict[NSStringFromClass(c)] = propertyKeys;
+}
+- (NSArray *)propertyKeysForClass:(Class)c
+{
+ return self.propertyKeysDict[NSStringFromClass(c)];
+}
+
+/** ������������������������������ */
+- (void)setObjectClassInArray:(Class)objectClass forClass:(Class)c
+{
+ if (!objectClass) return;
+ self.objectClassInArrayDict[NSStringFromClass(c)] = objectClass;
+}
+- (Class)objectClassInArrayForClass:(Class)c
+{
+ return self.objectClassInArrayDict[NSStringFromClass(c)];
+}
+@end
diff --git a/SocketDemo/Utils/MJExtension/MJPropertyKey.h b/SocketDemo/Utils/MJExtension/MJPropertyKey.h
new file mode 100755
index 0000000..3cb254b
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJPropertyKey.h
@@ -0,0 +1,30 @@
+//
+// MJPropertyKey.h
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/8/11.
+// Copyright (c) 2015��� ���������. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+typedef enum {
+ MJPropertyKeyTypeDictionary = 0, // ���������key
+ MJPropertyKeyTypeArray // ���������key
+} MJPropertyKeyType;
+
+/**
+ * ���������key
+ */
+@interface MJPropertyKey : NSObject
+/** key��������� */
+@property (copy, nonatomic) NSString *name;
+/** key���������������������@"10"������������@"age" */
+@property (assign, nonatomic) MJPropertyKeyType type;
+
+/**
+ * ���������������key������������name������object���������������������������������
+ */
+- (id)valueInObject:(id)object;
+
+@end
diff --git a/SocketDemo/Utils/MJExtension/MJPropertyKey.m b/SocketDemo/Utils/MJExtension/MJPropertyKey.m
new file mode 100755
index 0000000..438d019
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJPropertyKey.m
@@ -0,0 +1,25 @@
+//
+// MJPropertyKey.m
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/8/11.
+// Copyright (c) 2015��� ���������. All rights reserved.
+//
+
+#import "MJPropertyKey.h"
+
+@implementation MJPropertyKey
+
+- (id)valueInObject:(id)object
+{
+ if ([object isKindOfClass:[NSDictionary class]] && self.type == MJPropertyKeyTypeDictionary) {
+ return object[self.name];
+ } else if ([object isKindOfClass:[NSArray class]] && self.type == MJPropertyKeyTypeArray) {
+ NSArray *array = object;
+ NSUInteger index = self.name.intValue;
+ if (index < array.count) return array[index];
+ return nil;
+ }
+ return nil;
+}
+@end
diff --git a/SocketDemo/Utils/MJExtension/MJPropertyType.h b/SocketDemo/Utils/MJExtension/MJPropertyType.h
new file mode 100755
index 0000000..8c53f27
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJPropertyType.h
@@ -0,0 +1,39 @@
+//
+// MJPropertyType.h
+// MJExtension
+//
+// Created by mj on 14-1-15.
+// Copyright (c) 2014��� ���������. All rights reserved.
+// ������������������
+
+#import <Foundation/Foundation.h>
+
+/**
+ * ������������������
+ */
+@interface MJPropertyType : NSObject
+/** ��������������� */
+@property (nonatomic, copy) NSString *code;
+
+/** ���������id������ */
+@property (nonatomic, readonly, getter=isIdType) BOOL idType;
+
+/** ������������������������������int���float��� */
+@property (nonatomic, readonly, getter=isNumberType) BOOL numberType;
+
+/** ���������BOOL������ */
+@property (nonatomic, readonly, getter=isBoolType) BOOL boolType;
+
+/** ������������������������������������������������������nil��� */
+@property (nonatomic, readonly) Class typeClass;
+
+/** ���������������������Foundation���������������NSString���NSArray */
+@property (nonatomic, readonly, getter = isFromFoundation) BOOL fromFoundation;
+/** ���������������������KVC */
+@property (nonatomic, readonly, getter = isKVCDisabled) BOOL KVCDisabled;
+
+/**
+ * ���������������������������
+ */
++ (instancetype)cachedTypeWithCode:(NSString *)code;
+@end
\ No newline at end of file
diff --git a/SocketDemo/Utils/MJExtension/MJPropertyType.m b/SocketDemo/Utils/MJExtension/MJPropertyType.m
new file mode 100755
index 0000000..b78b202
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/MJPropertyType.m
@@ -0,0 +1,71 @@
+//
+// MJPropertyType.m
+// MJExtension
+//
+// Created by mj on 14-1-15.
+// Copyright (c) 2014��� ���������. All rights reserved.
+//
+
+#import "MJPropertyType.h"
+#import "MJExtension.h"
+#import "MJFoundation.h"
+#import "MJExtensionConst.h"
+
+@implementation MJPropertyType
+
+static NSMutableDictionary *types_;
++ (void)initialize
+{
+ types_ = [NSMutableDictionary dictionary];
+}
+
++ (instancetype)cachedTypeWithCode:(NSString *)code
+{
+ MJExtensionAssertParamNotNil2(code, nil);
+
+ MJPropertyType *type = types_[code];
+ if (type == nil) {
+ type = [[self alloc] init];
+ type.code = code;
+ types_[code] = type;
+ }
+ return type;
+}
+
+#pragma mark - ������������
+- (void)setCode:(NSString *)code
+{
+ _code = code;
+
+ MJExtensionAssertParamNotNil(code);
+
+ if ([code isEqualToString:MJPropertyTypeId]) {
+ _idType = YES;
+ } else if (code.length == 0) {
+ _KVCDisabled = YES;
+ } else if (code.length > 3 && [code hasPrefix:@"@\""]) {
+ // ������@"���"������������������������������
+ _code = [code substringWithRange:NSMakeRange(2, code.length - 3)];
+ _typeClass = NSClassFromString(_code);
+ _fromFoundation = [MJFoundation isClassFromFoundation:_typeClass];
+ _numberType = [_typeClass isSubclassOfClass:[NSNumber class]];
+
+ } else if ([code isEqualToString:MJPropertyTypeSEL] ||
+ [code isEqualToString:MJPropertyTypeIvar] ||
+ [code isEqualToString:MJPropertyTypeMethod]) {
+ _KVCDisabled = YES;
+ }
+
+ // ���������������������
+ NSString *lowerCode = _code.lowercaseString;
+ NSArray *numberTypes = @[MJPropertyTypeInt, MJPropertyTypeShort, MJPropertyTypeBOOL1, MJPropertyTypeBOOL2, MJPropertyTypeFloat, MJPropertyTypeDouble, MJPropertyTypeLong, MJPropertyTypeLongLong, MJPropertyTypeChar];
+ if ([numberTypes containsObject:lowerCode]) {
+ _numberType = YES;
+
+ if ([lowerCode isEqualToString:MJPropertyTypeBOOL1]
+ || [lowerCode isEqualToString:MJPropertyTypeBOOL2]) {
+ _boolType = YES;
+ }
+ }
+}
+@end
diff --git a/SocketDemo/Utils/MJExtension/NSObject+MJClass.h b/SocketDemo/Utils/MJExtension/NSObject+MJClass.h
new file mode 100755
index 0000000..e4ac1c5
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSObject+MJClass.h
@@ -0,0 +1,90 @@
+//
+// NSObject+MJClass.h
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/8/11.
+// Copyright (c) 2015��� ���������. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+
+/**
+ * ������������������block������������
+ */
+typedef void (^MJClassesEnumeration)(Class c, BOOL *stop);
+
+/** ��������������������������������������������������������������� */
+typedef NSArray * (^MJAllowedPropertyNames)();
+/** ��������������������������������������������� */
+typedef NSArray * (^MJAllowedCodingPropertyNames)();
+
+/** ������������������������������������������������������������������������������ */
+typedef NSArray * (^MJIgnoredPropertyNames)();
+/** ������������������������������������������������������������ */
+typedef NSArray * (^MJIgnoredCodingPropertyNames)();
+
+/**
+ * ������������������
+ */
+@interface NSObject (MJClass)
+/**
+ * ������������������
+ */
++ (void)mj_enumerateClasses:(MJClassesEnumeration)enumeration;
++ (void)mj_enumerateAllClasses:(MJClassesEnumeration)enumeration;
+
+#pragma mark - ���������������������
+/**
+ * ���������������������������������������������������������������
+ *
+ * @param allowedPropertyNames ���������������������������������������������������������������
+ */
++ (void)mj_setupAllowedPropertyNames:(MJAllowedPropertyNames)allowedPropertyNames;
+
+/**
+ * ���������������������������������������������������������������
+ */
++ (NSMutableArray *)mj_totalAllowedPropertyNames;
+
+#pragma mark - ���������������������
+/**
+ * ������������������������������������������������������������������������������
+ *
+ * @param ignoredPropertyNames ������������������������������������������������������������������������������
+ */
++ (void)mj_setupIgnoredPropertyNames:(MJIgnoredPropertyNames)ignoredPropertyNames;
+
+/**
+ * ������������������������������������������������������������������������������
+ */
++ (NSMutableArray *)mj_totalIgnoredPropertyNames;
+
+#pragma mark - ���������������������������
+/**
+ * ���������������������������������������������
+ *
+ * @param allowedCodingPropertyNames ���������������������������������������������
+ */
++ (void)mj_setupAllowedCodingPropertyNames:(MJAllowedCodingPropertyNames)allowedCodingPropertyNames;
+
+/**
+ * ���������������������������������������������������������������
+ */
++ (NSMutableArray *)mj_totalAllowedCodingPropertyNames;
+
+#pragma mark - ���������������������������
+/**
+ * ������������������������������������������������������������
+ *
+ * @param ignoredCodingPropertyNames ������������������������������������������������������������
+ */
++ (void)mj_setupIgnoredCodingPropertyNames:(MJIgnoredCodingPropertyNames)ignoredCodingPropertyNames;
+
+/**
+ * ������������������������������������������������������������
+ */
++ (NSMutableArray *)mj_totalIgnoredCodingPropertyNames;
+
+#pragma mark - ������������
++ (void)mj_setupBlockReturnValue:(id (^)())block key:(const char *)key;
+@end
diff --git a/SocketDemo/Utils/MJExtension/NSObject+MJClass.m b/SocketDemo/Utils/MJExtension/NSObject+MJClass.m
new file mode 100755
index 0000000..789b9a8
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSObject+MJClass.m
@@ -0,0 +1,168 @@
+//
+// NSObject+MJClass.m
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/8/11.
+// Copyright (c) 2015��� ���������. All rights reserved.
+//
+
+#import "NSObject+MJClass.h"
+#import "NSObject+MJCoding.h"
+#import "NSObject+MJKeyValue.h"
+#import "MJFoundation.h"
+#import <objc/runtime.h>
+
+static const char MJAllowedPropertyNamesKey = '\0';
+static const char MJIgnoredPropertyNamesKey = '\0';
+static const char MJAllowedCodingPropertyNamesKey = '\0';
+static const char MJIgnoredCodingPropertyNamesKey = '\0';
+
+static NSMutableDictionary *allowedPropertyNamesDict_;
+static NSMutableDictionary *ignoredPropertyNamesDict_;
+static NSMutableDictionary *allowedCodingPropertyNamesDict_;
+static NSMutableDictionary *ignoredCodingPropertyNamesDict_;
+
+@implementation NSObject (MJClass)
+
++ (void)load
+{
+ allowedPropertyNamesDict_ = [NSMutableDictionary dictionary];
+ ignoredPropertyNamesDict_ = [NSMutableDictionary dictionary];
+ allowedCodingPropertyNamesDict_ = [NSMutableDictionary dictionary];
+ ignoredCodingPropertyNamesDict_ = [NSMutableDictionary dictionary];
+}
+
++ (NSMutableDictionary *)dictForKey:(const void *)key
+{
+ if (key == &MJAllowedPropertyNamesKey) return allowedPropertyNamesDict_;
+ if (key == &MJIgnoredPropertyNamesKey) return ignoredPropertyNamesDict_;
+ if (key == &MJAllowedCodingPropertyNamesKey) return allowedCodingPropertyNamesDict_;
+ if (key == &MJIgnoredCodingPropertyNamesKey) return ignoredCodingPropertyNamesDict_;
+ return nil;
+}
+
++ (void)mj_enumerateClasses:(MJClassesEnumeration)enumeration
+{
+ // 1.������block���������������
+ if (enumeration == nil) return;
+
+ // 2.���������������������
+ BOOL stop = NO;
+
+ // 3.������������������������
+ Class c = self;
+
+ // 4.������������������������
+ while (c && !stop) {
+ // 4.1.������������
+ enumeration(c, &stop);
+
+ // 4.2.������������
+ c = class_getSuperclass(c);
+
+ if ([MJFoundation isClassFromFoundation:c]) break;
+ }
+}
+
++ (void)mj_enumerateAllClasses:(MJClassesEnumeration)enumeration
+{
+ // 1.������block���������������
+ if (enumeration == nil) return;
+
+ // 2.���������������������
+ BOOL stop = NO;
+
+ // 3.������������������������
+ Class c = self;
+
+ // 4.������������������������
+ while (c && !stop) {
+ // 4.1.������������
+ enumeration(c, &stop);
+
+ // 4.2.������������
+ c = class_getSuperclass(c);
+ }
+}
+
+#pragma mark - ���������������������
++ (void)mj_setupIgnoredPropertyNames:(MJIgnoredPropertyNames)ignoredPropertyNames
+{
+ [self mj_setupBlockReturnValue:ignoredPropertyNames key:&MJIgnoredPropertyNamesKey];
+}
+
++ (NSMutableArray *)mj_totalIgnoredPropertyNames
+{
+ return [self mj_totalObjectsWithSelector:@selector(mj_ignoredPropertyNames) key:&MJIgnoredPropertyNamesKey];
+}
+
+#pragma mark - ���������������������������
++ (void)mj_setupIgnoredCodingPropertyNames:(MJIgnoredCodingPropertyNames)ignoredCodingPropertyNames
+{
+ [self mj_setupBlockReturnValue:ignoredCodingPropertyNames key:&MJIgnoredCodingPropertyNamesKey];
+}
+
++ (NSMutableArray *)mj_totalIgnoredCodingPropertyNames
+{
+ return [self mj_totalObjectsWithSelector:@selector(mj_ignoredCodingPropertyNames) key:&MJIgnoredCodingPropertyNamesKey];
+}
+
+#pragma mark - ���������������������
++ (void)mj_setupAllowedPropertyNames:(MJAllowedPropertyNames)allowedPropertyNames;
+{
+ [self mj_setupBlockReturnValue:allowedPropertyNames key:&MJAllowedPropertyNamesKey];
+}
+
++ (NSMutableArray *)mj_totalAllowedPropertyNames
+{
+ return [self mj_totalObjectsWithSelector:@selector(mj_allowedPropertyNames) key:&MJAllowedPropertyNamesKey];
+}
+
+#pragma mark - ���������������������������
++ (void)mj_setupAllowedCodingPropertyNames:(MJAllowedCodingPropertyNames)allowedCodingPropertyNames
+{
+ [self mj_setupBlockReturnValue:allowedCodingPropertyNames key:&MJAllowedCodingPropertyNamesKey];
+}
+
++ (NSMutableArray *)mj_totalAllowedCodingPropertyNames
+{
+ return [self mj_totalObjectsWithSelector:@selector(mj_allowedCodingPropertyNames) key:&MJAllowedCodingPropertyNamesKey];
+}
+#pragma mark - block���������������:������block������������
++ (void)mj_setupBlockReturnValue:(id (^)())block key:(const char *)key
+{
+ if (block) {
+ objc_setAssociatedObject(self, key, block(), OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+ } else {
+ objc_setAssociatedObject(self, key, nil, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+ }
+
+ // ������������
+ [[self dictForKey:key] removeAllObjects];
+}
+
++ (NSMutableArray *)mj_totalObjectsWithSelector:(SEL)selector key:(const char *)key
+{
+ NSMutableArray *array = [self dictForKey:key][NSStringFromClass(self)];
+ if (array) return array;
+
+ // ���������������
+ [self dictForKey:key][NSStringFromClass(self)] = array = [NSMutableArray array];
+
+ if ([self respondsToSelector:selector]) {
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+ NSArray *subArray = [self performSelector:selector];
+#pragma clang diagnostic pop
+ if (subArray) {
+ [array addObjectsFromArray:subArray];
+ }
+ }
+
+ [self mj_enumerateAllClasses:^(__unsafe_unretained Class c, BOOL *stop) {
+ NSArray *subArray = objc_getAssociatedObject(c, key);
+ [array addObjectsFromArray:subArray];
+ }];
+ return array;
+}
+@end
diff --git a/SocketDemo/Utils/MJExtension/NSObject+MJCoding.h b/SocketDemo/Utils/MJExtension/NSObject+MJCoding.h
new file mode 100755
index 0000000..d4327dd
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSObject+MJCoding.h
@@ -0,0 +1,55 @@
+//
+// NSObject+MJCoding.h
+// MJExtension
+//
+// Created by mj on 14-1-15.
+// Copyright (c) 2014��� ���������. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "MJExtensionConst.h"
+
+/**
+ * Codeing������
+ */
+@protocol MJCoding <NSObject>
+@optional
+/**
+ * ���������������������������������������������
+ */
++ (NSArray *)mj_allowedCodingPropertyNames;
+/**
+ * ������������������������������������������������������������
+ */
++ (NSArray *)mj_ignoredCodingPropertyNames;
+@end
+
+@interface NSObject (MJCoding) <MJCoding>
+/**
+ * ������������������������������������
+ */
+- (void)mj_decode:(NSCoder *)decoder;
+/**
+ * ������������������������������������
+ */
+- (void)mj_encode:(NSCoder *)encoder;
+@end
+
+/**
+ ���������������
+ */
+#define MJCodingImplementation \
+- (id)initWithCoder:(NSCoder *)decoder \
+{ \
+if (self = [super init]) { \
+[self mj_decode:decoder]; \
+} \
+return self; \
+} \
+\
+- (void)encodeWithCoder:(NSCoder *)encoder \
+{ \
+[self mj_encode:encoder]; \
+}
+
+#define MJExtensionCodingImplementation MJCodingImplementation
\ No newline at end of file
diff --git a/SocketDemo/Utils/MJExtension/NSObject+MJCoding.m b/SocketDemo/Utils/MJExtension/NSObject+MJCoding.m
new file mode 100755
index 0000000..27ae8ee
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSObject+MJCoding.m
@@ -0,0 +1,54 @@
+//
+// NSObject+MJCoding.m
+// MJExtension
+//
+// Created by mj on 14-1-15.
+// Copyright (c) 2014��� ���������. All rights reserved.
+//
+
+#import "NSObject+MJCoding.h"
+#import "NSObject+MJClass.h"
+#import "NSObject+MJProperty.h"
+#import "MJProperty.h"
+
+@implementation NSObject (MJCoding)
+
+- (void)mj_encode:(NSCoder *)encoder
+{
+ Class clazz = [self class];
+
+ NSArray *allowedCodingPropertyNames = [clazz mj_totalAllowedCodingPropertyNames];
+ NSArray *ignoredCodingPropertyNames = [clazz mj_totalIgnoredCodingPropertyNames];
+
+ [clazz mj_enumerateProperties:^(MJProperty *property, BOOL *stop) {
+ // ���������������������
+ if (allowedCodingPropertyNames.count && ![allowedCodingPropertyNames containsObject:property.name]) return;
+ if ([ignoredCodingPropertyNames containsObject:property.name]) return;
+
+ id value = [property valueForObject:self];
+ if (value == nil) return;
+ [encoder encodeObject:value forKey:property.name];
+ }];
+}
+
+- (void)mj_decode:(NSCoder *)decoder
+{
+ Class clazz = [self class];
+
+ NSArray *allowedCodingPropertyNames = [clazz mj_totalAllowedCodingPropertyNames];
+ NSArray *ignoredCodingPropertyNames = [clazz mj_totalIgnoredCodingPropertyNames];
+
+ [clazz mj_enumerateProperties:^(MJProperty *property, BOOL *stop) {
+ // ���������������������
+ if (allowedCodingPropertyNames.count && ![allowedCodingPropertyNames containsObject:property.name]) return;
+ if ([ignoredCodingPropertyNames containsObject:property.name]) return;
+
+ id value = [decoder decodeObjectForKey:property.name];
+ if (value == nil) { // ���������������MJExtension������
+ value = [decoder decodeObjectForKey:[@"_" stringByAppendingString:property.name]];
+ }
+ if (value == nil) return;
+ [property setValue:value forObject:self];
+ }];
+}
+@end
diff --git a/SocketDemo/Utils/MJExtension/NSObject+MJKeyValue.h b/SocketDemo/Utils/MJExtension/NSObject+MJKeyValue.h
new file mode 100755
index 0000000..e231940
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSObject+MJKeyValue.h
@@ -0,0 +1,225 @@
+//
+// NSObject+MJKeyValue.h
+// MJExtension
+//
+// Created by mj on 13-8-24.
+// Copyright (c) 2013��� ���������. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "MJExtensionConst.h"
+#import <CoreData/CoreData.h>
+#import "MJProperty.h"
+
+/**
+ * KeyValue������
+ */
+@protocol MJKeyValue <NSObject>
+@optional
+/**
+ * ������������������������������������������������������������������������
+ */
++ (NSArray *)mj_allowedPropertyNames;
+
+/**
+ * ������������������������������������������������������������������������������
+ */
++ (NSArray *)mj_ignoredPropertyNames;
+
+/**
+ * ������������������������key������������������
+ *
+ * @return ������������key���������������value���������������������������key
+ */
++ (NSDictionary *)mj_replacedKeyFromPropertyName;
+
+/**
+ * ������������������������key������������������
+ *
+ * @return ������������������������key
+ */
++ (NSString *)mj_replacedKeyFromPropertyName121:(NSString *)propertyName;
+
+/**
+ * ���������������������������������
+ *
+ * @return ������������key���������������������value���������������������������Class���Class������������NSString���������
+ */
++ (NSDictionary *)mj_objectClassInArray;
+
+/**
+ * ���������������������������������������������
+ *
+ * @param oldValue ������
+ *
+ * @return ������
+ */
+- (id)mj_newValueFromOldValue:(id)oldValue property:(MJProperty *)property;
+
+/**
+ * ���������������������������������
+ */
+- (void)mj_keyValuesDidFinishConvertingToObject;
+
+/**
+ * ���������������������������������
+ */
+- (void)mj_objectDidFinishConvertingToKeyValues;
+@end
+
+@interface NSObject (MJKeyValue) <MJKeyValue>
+#pragma mark - ���������
+/**
+ * ���������������������������������������
+ */
++ (NSError *)mj_error;
+
+/**
+ * ������������������������������key������������replacedKeyFromPropertyName���������������������������������������������������������
+ */
++ (void)mj_referenceReplacedKeyWhenCreatingKeyValues:(BOOL)reference;
+
+#pragma mark - ������������
+/**
+ * ���������������������������������������
+ * @param keyValues ������(���������NSDictionary���NSData���NSString)
+ */
+- (instancetype)mj_setKeyValues:(id)keyValues;
+
+/**
+ * ���������������������������������������
+ * @param keyValues ������(���������NSDictionary���NSData���NSString)
+ * @param context CoreData���������
+ */
+- (instancetype)mj_setKeyValues:(id)keyValues context:(NSManagedObjectContext *)context;
+
+/**
+ * ���������������������
+ * @return ������
+ */
+- (NSMutableDictionary *)mj_keyValues;
+- (NSMutableDictionary *)mj_keyValuesWithKeys:(NSArray *)keys;
+- (NSMutableDictionary *)mj_keyValuesWithIgnoredKeys:(NSArray *)ignoredKeys;
+
+/**
+ * ���������������������������������������������
+ * @param objectArray ������������
+ * @return ������������
+ */
++ (NSMutableArray *)mj_keyValuesArrayWithObjectArray:(NSArray *)objectArray;
++ (NSMutableArray *)mj_keyValuesArrayWithObjectArray:(NSArray *)objectArray keys:(NSArray *)keys;
++ (NSMutableArray *)mj_keyValuesArrayWithObjectArray:(NSArray *)objectArray ignoredKeys:(NSArray *)ignoredKeys;
+
+#pragma mark - ���������������
+/**
+ * ���������������������������������
+ * @param keyValues ������(���������NSDictionary���NSData���NSString)
+ * @return ���������������
+ */
++ (instancetype)mj_objectWithKeyValues:(id)keyValues;
+
+/**
+ * ���������������������������CoreData������
+ * @param keyValues ������(���������NSDictionary���NSData���NSString)
+ * @param context CoreData���������
+ * @return ���������������
+ */
++ (instancetype)mj_objectWithKeyValues:(id)keyValues context:(NSManagedObjectContext *)context;
+
+/**
+ * ������plist���������������������
+ * @param filename ���������(���������mainBundle������������)
+ * @return ���������������
+ */
++ (instancetype)mj_objectWithFilename:(NSString *)filename;
+
+/**
+ * ������plist���������������������
+ * @param file ���������������
+ * @return ���������������
+ */
++ (instancetype)mj_objectWithFile:(NSString *)file;
+
+#pragma mark - ���������������������������
+/**
+ * ���������������������������������������������
+ * @param keyValuesArray ������������(���������NSDictionary���NSData���NSString)
+ * @return ������������
+ */
++ (NSMutableArray *)mj_objectArrayWithKeyValuesArray:(id)keyValuesArray;
+
+/**
+ * ���������������������������������������������
+ * @param keyValuesArray ������������(���������NSDictionary���NSData���NSString)
+ * @param context CoreData���������
+ * @return ������������
+ */
++ (NSMutableArray *)mj_objectArrayWithKeyValuesArray:(id)keyValuesArray context:(NSManagedObjectContext *)context;
+
+/**
+ * ������plist���������������������������
+ * @param filename ���������(���������mainBundle������������)
+ * @return ������������
+ */
++ (NSMutableArray *)mj_objectArrayWithFilename:(NSString *)filename;
+
+/**
+ * ������plist���������������������������
+ * @param file ���������������
+ * @return ������������
+ */
++ (NSMutableArray *)mj_objectArrayWithFile:(NSString *)file;
+
+#pragma mark - ���������JSON
+/**
+ * ���������JSON Data
+ */
+- (NSData *)mj_JSONData;
+/**
+ * ���������������������������
+ */
+- (id)mj_JSONObject;
+/**
+ * ���������JSON ���������
+ */
+- (NSString *)mj_JSONString;
+@end
+
+@interface NSObject (MJKeyValueDeprecated_v_2_5_16)
+- (instancetype)setKeyValues:(id)keyValue MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (instancetype)setKeyValues:(id)keyValues error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (instancetype)setKeyValues:(id)keyValues context:(NSManagedObjectContext *)context MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (instancetype)setKeyValues:(id)keyValues context:(NSManagedObjectContext *)context error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (void)referenceReplacedKeyWhenCreatingKeyValues:(BOOL)reference MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSMutableDictionary *)keyValues MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSMutableDictionary *)keyValuesWithError:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSMutableDictionary *)keyValuesWithKeys:(NSArray *)keys MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSMutableDictionary *)keyValuesWithKeys:(NSArray *)keys error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSMutableDictionary *)keyValuesWithIgnoredKeys:(NSArray *)ignoredKeys MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSMutableDictionary *)keyValuesWithIgnoredKeys:(NSArray *)ignoredKeys error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray keys:(NSArray *)keys MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray keys:(NSArray *)keys error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray ignoredKeys:(NSArray *)ignoredKeys MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray ignoredKeys:(NSArray *)ignoredKeys error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (instancetype)objectWithKeyValues:(id)keyValues MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (instancetype)objectWithKeyValues:(id)keyValues error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (instancetype)objectWithKeyValues:(id)keyValues context:(NSManagedObjectContext *)context MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (instancetype)objectWithKeyValues:(id)keyValues context:(NSManagedObjectContext *)context error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (instancetype)objectWithFilename:(NSString *)filename MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (instancetype)objectWithFilename:(NSString *)filename error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (instancetype)objectWithFile:(NSString *)file MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (instancetype)objectWithFile:(NSString *)file error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)objectArrayWithKeyValuesArray:(id)keyValuesArray MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)objectArrayWithKeyValuesArray:(id)keyValuesArray error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)objectArrayWithKeyValuesArray:(id)keyValuesArray context:(NSManagedObjectContext *)context MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)objectArrayWithKeyValuesArray:(id)keyValuesArray context:(NSManagedObjectContext *)context error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)objectArrayWithFilename:(NSString *)filename MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)objectArrayWithFilename:(NSString *)filename error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)objectArrayWithFile:(NSString *)file MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (NSMutableArray *)objectArrayWithFile:(NSString *)file error:(NSError **)error MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSData *)JSONData MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (id)JSONObject MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSString *)JSONString MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+@end
diff --git a/SocketDemo/Utils/MJExtension/NSObject+MJKeyValue.m b/SocketDemo/Utils/MJExtension/NSObject+MJKeyValue.m
new file mode 100755
index 0000000..5635e29
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSObject+MJKeyValue.m
@@ -0,0 +1,708 @@
+//
+// NSObject+MJKeyValue.m
+// MJExtension
+//
+// Created by mj on 13-8-24.
+// Copyright (c) 2013��� ���������. All rights reserved.
+//
+
+#import "NSObject+MJKeyValue.h"
+#import "NSObject+MJProperty.h"
+#import "NSString+MJExtension.h"
+#import "MJProperty.h"
+#import "MJPropertyType.h"
+#import "MJExtensionConst.h"
+#import "MJFoundation.h"
+#import "NSString+MJExtension.h"
+#import "NSObject+MJClass.h"
+
+@implementation NSObject (MJKeyValue)
+
+#pragma mark - ������
+static const char MJErrorKey = '\0';
++ (NSError *)mj_error
+{
+ return objc_getAssociatedObject(self, &MJErrorKey);
+}
+
++ (void)setMj_error:(NSError *)error
+{
+ objc_setAssociatedObject(self, &MJErrorKey, error, OBJC_ASSOCIATION_RETAIN_NONATOMIC);
+}
+
+#pragma mark - ������ -> ������������������
+/** ������������������������������key������������replacedKeyFromPropertyName��������������������������������������������������������� */
+static const char MJReferenceReplacedKeyWhenCreatingKeyValuesKey = '\0';
+
++ (void)mj_referenceReplacedKeyWhenCreatingKeyValues:(BOOL)reference
+{
+ objc_setAssociatedObject(self, &MJReferenceReplacedKeyWhenCreatingKeyValuesKey, @(reference), OBJC_ASSOCIATION_ASSIGN);
+}
+
++ (BOOL)mj_isReferenceReplacedKeyWhenCreatingKeyValues
+{
+ __block id value = objc_getAssociatedObject(self, &MJReferenceReplacedKeyWhenCreatingKeyValuesKey);
+ if (!value) {
+ [self mj_enumerateAllClasses:^(__unsafe_unretained Class c, BOOL *stop) {
+ value = objc_getAssociatedObject(c, &MJReferenceReplacedKeyWhenCreatingKeyValuesKey);
+
+ if (value) *stop = YES;
+ }];
+ }
+ return [value boolValue];
+}
+
+#pragma mark - --���������������--
+static NSNumberFormatter *numberFormatter_;
++ (void)load
+{
+ numberFormatter_ = [[NSNumberFormatter alloc] init];
+
+ // ������������
+ [self mj_referenceReplacedKeyWhenCreatingKeyValues:YES];
+}
+
+#pragma mark - --������������--
+#pragma mark - ������ -> ������
+- (instancetype)mj_setKeyValues:(id)keyValues
+{
+ return [self mj_setKeyValues:keyValues context:nil];
+}
+
+/**
+ ���������������
+ */
+- (instancetype)mj_setKeyValues:(id)keyValues context:(NSManagedObjectContext *)context
+{
+ // ������JSON������
+ keyValues = [keyValues mj_JSONObject];
+
+ MJExtensionAssertError([keyValues isKindOfClass:[NSDictionary class]], self, [self class], @"keyValues������������������������");
+
+ Class clazz = [self class];
+ NSArray *allowedPropertyNames = [clazz mj_totalAllowedPropertyNames];
+ NSArray *ignoredPropertyNames = [clazz mj_totalIgnoredPropertyNames];
+
+ //������������������������������������������������������������������������������������������������
+ [clazz mj_enumerateProperties:^(MJProperty *property, BOOL *stop) {
+ @try {
+ // 0.���������������������
+ if (allowedPropertyNames.count && ![allowedPropertyNames containsObject:property.name]) return;
+ if ([ignoredPropertyNames containsObject:property.name]) return;
+
+ // 1.���������������
+ id value;
+ NSArray *propertyKeyses = [property propertyKeysForClass:clazz];
+ for (NSArray *propertyKeys in propertyKeyses) {
+ value = keyValues;
+ for (MJPropertyKey *propertyKey in propertyKeys) {
+ value = [propertyKey valueInObject:value];
+ }
+ if (value) break;
+ }
+
+ // ������������
+ id newValue = [clazz mj_getNewValueFromObject:self oldValue:value property:property];
+ if (newValue != value) { // ���������������������
+ [property setValue:newValue forObject:self];
+ return;
+ }
+
+ // ���������������������������������
+ if (!value || value == [NSNull null]) return;
+
+ // 2.������������
+ MJPropertyType *type = property.type;
+ Class propertyClass = type.typeClass;
+ Class objectClass = [property objectClassInArrayForClass:[self class]];
+
+ // ��������� -> ������������
+ if (propertyClass == [NSMutableArray class] && [value isKindOfClass:[NSArray class]]) {
+ value = [NSMutableArray arrayWithArray:value];
+ } else if (propertyClass == [NSMutableDictionary class] && [value isKindOfClass:[NSDictionary class]]) {
+ value = [NSMutableDictionary dictionaryWithDictionary:value];
+ } else if (propertyClass == [NSMutableString class] && [value isKindOfClass:[NSString class]]) {
+ value = [NSMutableString stringWithString:value];
+ } else if (propertyClass == [NSMutableData class] && [value isKindOfClass:[NSData class]]) {
+ value = [NSMutableData dataWithData:value];
+ }
+
+ if (!type.isFromFoundation && propertyClass) { // ������������
+ value = [propertyClass mj_objectWithKeyValues:value context:context];
+ } else if (objectClass) {
+ if (objectClass == [NSURL class] && [value isKindOfClass:[NSArray class]]) {
+ // string array -> url array
+ NSMutableArray *urlArray = [NSMutableArray array];
+ for (NSString *string in value) {
+ if (![string isKindOfClass:[NSString class]]) continue;
+ [urlArray addObject:string.mj_url];
+ }
+ value = urlArray;
+ } else { // ������������-->������������
+ value = [objectClass mj_objectArrayWithKeyValuesArray:value context:context];
+ }
+ } else {
+ if (propertyClass == [NSString class]) {
+ if ([value isKindOfClass:[NSNumber class]]) {
+ // NSNumber -> NSString
+ value = [value description];
+ } else if ([value isKindOfClass:[NSURL class]]) {
+ // NSURL -> NSString
+ value = [value absoluteString];
+ }
+ } else if ([value isKindOfClass:[NSString class]]) {
+ if (propertyClass == [NSURL class]) {
+ // NSString -> NSURL
+ // ���������������
+ value = [value mj_url];
+ } else if (type.isNumberType) {
+ NSString *oldValue = value;
+
+ // NSString -> NSNumber
+ if (type.typeClass == [NSDecimalNumber class]) {
+ value = [NSDecimalNumber decimalNumberWithString:oldValue];
+ } else {
+ value = [numberFormatter_ numberFromString:oldValue];
+ }
+
+ // ���������BOOL
+ if (type.isBoolType) {
+ // ������������BOOL������������������charValue���������
+ // ���������������������������charValue������BOOL������
+ NSString *lower = [oldValue lowercaseString];
+ if ([lower isEqualToString:@"yes"] || [lower isEqualToString:@"true"]) {
+ value = @YES;
+ } else if ([lower isEqualToString:@"no"] || [lower isEqualToString:@"false"]) {
+ value = @NO;
+ }
+ }
+ }
+ }
+
+ // value���property���������������
+ if (propertyClass && ![value isKindOfClass:propertyClass]) {
+ value = nil;
+ }
+ }
+
+ // 3.������
+ [property setValue:value forObject:self];
+ } @catch (NSException *exception) {
+ MJExtensionBuildError([self class], exception.reason);
+ MJExtensionLog(@"%@", exception);
+ }
+ }];
+
+ // ������������
+ if ([self respondsToSelector:@selector(mj_keyValuesDidFinishConvertingToObject)]) {
+ [self mj_keyValuesDidFinishConvertingToObject];
+ }
+ return self;
+}
+
++ (instancetype)mj_objectWithKeyValues:(id)keyValues
+{
+ return [self mj_objectWithKeyValues:keyValues context:nil];
+}
+
++ (instancetype)mj_objectWithKeyValues:(id)keyValues context:(NSManagedObjectContext *)context
+{
+ // ������JSON������
+ keyValues = [keyValues mj_JSONObject];
+ MJExtensionAssertError([keyValues isKindOfClass:[NSDictionary class]], nil, [self class], @"keyValues������������������������");
+
+ if ([self isSubclassOfClass:[NSManagedObject class]] && context) {
+ return [[NSEntityDescription insertNewObjectForEntityForName:NSStringFromClass(self) inManagedObjectContext:context] mj_setKeyValues:keyValues context:context];
+ }
+ return [[[self alloc] init] mj_setKeyValues:keyValues];
+}
+
++ (instancetype)mj_objectWithFilename:(NSString *)filename
+{
+ MJExtensionAssertError(filename != nil, nil, [self class], @"filename���������nil");
+
+ return [self mj_objectWithFile:[[NSBundle mainBundle] pathForResource:filename ofType:nil]];
+}
+
++ (instancetype)mj_objectWithFile:(NSString *)file
+{
+ MJExtensionAssertError(file != nil, nil, [self class], @"file���������nil");
+
+ return [self mj_objectWithKeyValues:[NSDictionary dictionaryWithContentsOfFile:file]];
+}
+
+#pragma mark - ������������ -> ������������
++ (NSMutableArray *)mj_objectArrayWithKeyValuesArray:(NSArray *)keyValuesArray
+{
+ return [self mj_objectArrayWithKeyValuesArray:keyValuesArray context:nil];
+}
+
++ (NSMutableArray *)mj_objectArrayWithKeyValuesArray:(id)keyValuesArray context:(NSManagedObjectContext *)context
+{
+ // ���������JSON���������
+ keyValuesArray = [keyValuesArray mj_JSONObject];
+
+ // 1.���������������
+ MJExtensionAssertError([keyValuesArray isKindOfClass:[NSArray class]], nil, [self class], @"keyValuesArray������������������������");
+
+ // ���������������������������NSString���NSNumber���������
+ if ([MJFoundation isClassFromFoundation:self]) return [NSMutableArray arrayWithArray:keyValuesArray];
+
+
+ // 2.������������
+ NSMutableArray *modelArray = [NSMutableArray array];
+
+ // 3.������
+ for (NSDictionary *keyValues in keyValuesArray) {
+ if ([keyValues isKindOfClass:[NSArray class]]){
+ [modelArray addObject:[self mj_objectArrayWithKeyValuesArray:keyValues context:context]];
+ } else {
+ id model = [self mj_objectWithKeyValues:keyValues context:context];
+ if (model) [modelArray addObject:model];
+ }
+ }
+
+ return modelArray;
+}
+
++ (NSMutableArray *)mj_objectArrayWithFilename:(NSString *)filename
+{
+ MJExtensionAssertError(filename != nil, nil, [self class], @"filename���������nil");
+
+ return [self mj_objectArrayWithFile:[[NSBundle mainBundle] pathForResource:filename ofType:nil]];
+}
+
++ (NSMutableArray *)mj_objectArrayWithFile:(NSString *)file
+{
+ MJExtensionAssertError(file != nil, nil, [self class], @"file���������nil");
+
+ return [self mj_objectArrayWithKeyValuesArray:[NSArray arrayWithContentsOfFile:file]];
+}
+
+#pragma mark - ������ -> ������
+- (NSMutableDictionary *)mj_keyValues
+{
+ return [self mj_keyValuesWithKeys:nil ignoredKeys:nil];
+}
+
+- (NSMutableDictionary *)mj_keyValuesWithKeys:(NSArray *)keys
+{
+ return [self mj_keyValuesWithKeys:keys ignoredKeys:nil];
+}
+
+- (NSMutableDictionary *)mj_keyValuesWithIgnoredKeys:(NSArray *)ignoredKeys
+{
+ return [self mj_keyValuesWithKeys:nil ignoredKeys:ignoredKeys];
+}
+
+- (NSMutableDictionary *)mj_keyValuesWithKeys:(NSArray *)keys ignoredKeys:(NSArray *)ignoredKeys
+{
+ // ���������������������������, ������������������
+ MJExtensionAssertError(![MJFoundation isClassFromFoundation:[self class]], (NSMutableDictionary *)self, [self class], @"���������������������������")
+
+ id keyValues = [NSMutableDictionary dictionary];
+
+ Class clazz = [self class];
+ NSArray *allowedPropertyNames = [clazz mj_totalAllowedPropertyNames];
+ NSArray *ignoredPropertyNames = [clazz mj_totalIgnoredPropertyNames];
+
+ [clazz mj_enumerateProperties:^(MJProperty *property, BOOL *stop) {
+ @try {
+ // 0.���������������������
+ if (allowedPropertyNames.count && ![allowedPropertyNames containsObject:property.name]) return;
+ if ([ignoredPropertyNames containsObject:property.name]) return;
+ if (keys.count && ![keys containsObject:property.name]) return;
+ if ([ignoredKeys containsObject:property.name]) return;
+
+ // 1.���������������
+ id value = [property valueForObject:self];
+ if (!value) return;
+
+ // 2.���������������������
+ MJPropertyType *type = property.type;
+ Class propertyClass = type.typeClass;
+ if (!type.isFromFoundation && propertyClass) {
+ value = [value mj_keyValues];
+ } else if ([value isKindOfClass:[NSArray class]]) {
+ // 3.������������������������������������
+ value = [NSObject mj_keyValuesArrayWithObjectArray:value];
+ } else if (propertyClass == [NSURL class]) {
+ value = [value absoluteString];
+ }
+
+ // 4.������
+ if ([clazz mj_isReferenceReplacedKeyWhenCreatingKeyValues]) {
+ NSArray *propertyKeys = [[property propertyKeysForClass:clazz] firstObject];
+ NSUInteger keyCount = propertyKeys.count;
+ // ������������
+ __block id innerContainer = keyValues;
+ [propertyKeys enumerateObjectsUsingBlock:^(MJPropertyKey *propertyKey, NSUInteger idx, BOOL *stop) {
+ // ���������������
+ MJPropertyKey *nextPropertyKey = nil;
+ if (idx != keyCount - 1) {
+ nextPropertyKey = propertyKeys[idx + 1];
+ }
+
+ if (nextPropertyKey) { // ������������������key
+ // ������propertyKey���������������������������
+ id tempInnerContainer = [propertyKey valueInObject:innerContainer];
+ if (tempInnerContainer == nil || [tempInnerContainer isKindOfClass:[NSNull class]]) {
+ if (nextPropertyKey.type == MJPropertyKeyTypeDictionary) {
+ tempInnerContainer = [NSMutableDictionary dictionary];
+ } else {
+ tempInnerContainer = [NSMutableArray array];
+ }
+ if (propertyKey.type == MJPropertyKeyTypeDictionary) {
+ innerContainer[propertyKey.name] = tempInnerContainer;
+ } else {
+ innerContainer[propertyKey.name.intValue] = tempInnerContainer;
+ }
+ }
+
+ if ([tempInnerContainer isKindOfClass:[NSMutableArray class]]) {
+ NSMutableArray *tempInnerContainerArray = tempInnerContainer;
+ int index = nextPropertyKey.name.intValue;
+ while (tempInnerContainerArray.count < index + 1) {
+ [tempInnerContainerArray addObject:[NSNull null]];
+ }
+ }
+
+ innerContainer = tempInnerContainer;
+ } else { // ������������key
+ if (propertyKey.type == MJPropertyKeyTypeDictionary) {
+ innerContainer[propertyKey.name] = value;
+ } else {
+ innerContainer[propertyKey.name.intValue] = value;
+ }
+ }
+ }];
+ } else {
+ keyValues[property.name] = value;
+ }
+ } @catch (NSException *exception) {
+ MJExtensionBuildError([self class], exception.reason);
+ MJExtensionLog(@"%@", exception);
+ }
+ }];
+
+ // ������������
+ if ([self respondsToSelector:@selector(mj_objectDidFinishConvertingToKeyValues)]) {
+ [self mj_objectDidFinishConvertingToKeyValues];
+ }
+
+ return keyValues;
+}
+#pragma mark - ������������ -> ������������
++ (NSMutableArray *)mj_keyValuesArrayWithObjectArray:(NSArray *)objectArray
+{
+ return [self mj_keyValuesArrayWithObjectArray:objectArray keys:nil ignoredKeys:nil];
+}
+
++ (NSMutableArray *)mj_keyValuesArrayWithObjectArray:(NSArray *)objectArray keys:(NSArray *)keys
+{
+ return [self mj_keyValuesArrayWithObjectArray:objectArray keys:keys ignoredKeys:nil];
+}
+
++ (NSMutableArray *)mj_keyValuesArrayWithObjectArray:(NSArray *)objectArray ignoredKeys:(NSArray *)ignoredKeys
+{
+ return [self mj_keyValuesArrayWithObjectArray:objectArray keys:nil ignoredKeys:ignoredKeys];
+}
+
++ (NSMutableArray *)mj_keyValuesArrayWithObjectArray:(NSArray *)objectArray keys:(NSArray *)keys ignoredKeys:(NSArray *)ignoredKeys
+{
+ // 0.���������������
+ MJExtensionAssertError([objectArray isKindOfClass:[NSArray class]], nil, [self class], @"objectArray������������������������");
+
+ // 1.������������
+ NSMutableArray *keyValuesArray = [NSMutableArray array];
+ for (id object in objectArray) {
+ if (keys) {
+ [keyValuesArray addObject:[object mj_keyValuesWithKeys:keys]];
+ } else {
+ [keyValuesArray addObject:[object mj_keyValuesWithIgnoredKeys:ignoredKeys]];
+ }
+ }
+ return keyValuesArray;
+}
+
+#pragma mark - ���������JSON
+- (NSData *)mj_JSONData
+{
+ if ([self isKindOfClass:[NSString class]]) {
+ return [((NSString *)self) dataUsingEncoding:NSUTF8StringEncoding];
+ } else if ([self isKindOfClass:[NSData class]]) {
+ return (NSData *)self;
+ }
+
+ return [NSJSONSerialization dataWithJSONObject:[self mj_JSONObject] options:kNilOptions error:nil];
+}
+
+- (id)mj_JSONObject
+{
+ if ([self isKindOfClass:[NSString class]]) {
+ return [NSJSONSerialization JSONObjectWithData:[((NSString *)self) dataUsingEncoding:NSUTF8StringEncoding] options:kNilOptions error:nil];
+ } else if ([self isKindOfClass:[NSData class]]) {
+ return [NSJSONSerialization JSONObjectWithData:(NSData *)self options:kNilOptions error:nil];
+ }
+
+ return self.mj_keyValues;
+}
+
+- (NSString *)mj_JSONString
+{
+ if ([self isKindOfClass:[NSString class]]) {
+ return (NSString *)self;
+ } else if ([self isKindOfClass:[NSData class]]) {
+ return [[NSString alloc] initWithData:(NSData *)self encoding:NSUTF8StringEncoding];
+ }
+
+ return [[NSString alloc] initWithData:[self mj_JSONData] encoding:NSUTF8StringEncoding];
+}
+@end
+
+@implementation NSObject (MJKeyValueDeprecated_v_2_5_16)
+- (instancetype)setKeyValues:(id)keyValues
+{
+ return [self mj_setKeyValues:keyValues];
+}
+
+- (instancetype)setKeyValues:(id)keyValues error:(NSError **)error
+{
+ id value = [self mj_setKeyValues:keyValues];
+ if (error != NULL) {
+ *error = [self.class mj_error];
+ }
+ return value;
+
+}
+
+- (instancetype)setKeyValues:(id)keyValues context:(NSManagedObjectContext *)context
+{
+ return [self mj_setKeyValues:keyValues context:context];
+}
+
+- (instancetype)setKeyValues:(id)keyValues context:(NSManagedObjectContext *)context error:(NSError **)error
+{
+ id value = [self mj_setKeyValues:keyValues context:context];
+ if (error != NULL) {
+ *error = [self.class mj_error];
+ }
+ return value;
+}
+
++ (void)referenceReplacedKeyWhenCreatingKeyValues:(BOOL)reference
+{
+ [self mj_referenceReplacedKeyWhenCreatingKeyValues:reference];
+}
+
+- (NSMutableDictionary *)keyValues
+{
+ return [self mj_keyValues];
+}
+
+- (NSMutableDictionary *)keyValuesWithError:(NSError **)error
+{
+ id value = [self mj_keyValues];
+ if (error != NULL) {
+ *error = [self.class mj_error];
+ }
+ return value;
+}
+
+- (NSMutableDictionary *)keyValuesWithKeys:(NSArray *)keys
+{
+ return [self mj_keyValuesWithKeys:keys];
+}
+
+- (NSMutableDictionary *)keyValuesWithKeys:(NSArray *)keys error:(NSError **)error
+{
+ id value = [self mj_keyValuesWithKeys:keys];
+ if (error != NULL) {
+ *error = [self.class mj_error];
+ }
+ return value;
+}
+
+- (NSMutableDictionary *)keyValuesWithIgnoredKeys:(NSArray *)ignoredKeys
+{
+ return [self mj_keyValuesWithIgnoredKeys:ignoredKeys];
+}
+
+- (NSMutableDictionary *)keyValuesWithIgnoredKeys:(NSArray *)ignoredKeys error:(NSError **)error
+{
+ id value = [self mj_keyValuesWithIgnoredKeys:ignoredKeys];
+ if (error != NULL) {
+ *error = [self.class mj_error];
+ }
+ return value;
+}
+
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray
+{
+ return [self mj_keyValuesArrayWithObjectArray:objectArray];
+}
+
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray error:(NSError **)error
+{
+ id value = [self mj_keyValuesArrayWithObjectArray:objectArray];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray keys:(NSArray *)keys
+{
+ return [self mj_keyValuesArrayWithObjectArray:objectArray keys:keys];
+}
+
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray keys:(NSArray *)keys error:(NSError **)error
+{
+ id value = [self mj_keyValuesArrayWithObjectArray:objectArray keys:keys];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray ignoredKeys:(NSArray *)ignoredKeys
+{
+ return [self mj_keyValuesArrayWithObjectArray:objectArray ignoredKeys:ignoredKeys];
+}
+
++ (NSMutableArray *)keyValuesArrayWithObjectArray:(NSArray *)objectArray ignoredKeys:(NSArray *)ignoredKeys error:(NSError **)error
+{
+ id value = [self mj_keyValuesArrayWithObjectArray:objectArray ignoredKeys:ignoredKeys];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (instancetype)objectWithKeyValues:(id)keyValues
+{
+ return [self mj_objectWithKeyValues:keyValues];
+}
+
++ (instancetype)objectWithKeyValues:(id)keyValues error:(NSError **)error
+{
+ id value = [self mj_objectWithKeyValues:keyValues];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (instancetype)objectWithKeyValues:(id)keyValues context:(NSManagedObjectContext *)context
+{
+ return [self mj_objectWithKeyValues:keyValues context:context];
+}
+
++ (instancetype)objectWithKeyValues:(id)keyValues context:(NSManagedObjectContext *)context error:(NSError **)error
+{
+ id value = [self mj_objectWithKeyValues:keyValues context:context];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (instancetype)objectWithFilename:(NSString *)filename
+{
+ return [self mj_objectWithFilename:filename];
+}
+
++ (instancetype)objectWithFilename:(NSString *)filename error:(NSError **)error
+{
+ id value = [self mj_objectWithFilename:filename];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (instancetype)objectWithFile:(NSString *)file
+{
+ return [self mj_objectWithFile:file];
+}
+
++ (instancetype)objectWithFile:(NSString *)file error:(NSError **)error
+{
+ id value = [self mj_objectWithFile:file];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (NSMutableArray *)objectArrayWithKeyValuesArray:(id)keyValuesArray
+{
+ return [self mj_objectArrayWithKeyValuesArray:keyValuesArray];
+}
+
++ (NSMutableArray *)objectArrayWithKeyValuesArray:(id)keyValuesArray error:(NSError **)error
+{
+ id value = [self mj_objectArrayWithKeyValuesArray:keyValuesArray];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (NSMutableArray *)objectArrayWithKeyValuesArray:(id)keyValuesArray context:(NSManagedObjectContext *)context
+{
+ return [self mj_objectArrayWithKeyValuesArray:keyValuesArray context:context];
+}
+
++ (NSMutableArray *)objectArrayWithKeyValuesArray:(id)keyValuesArray context:(NSManagedObjectContext *)context error:(NSError **)error
+{
+ id value = [self mj_objectArrayWithKeyValuesArray:keyValuesArray context:context];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (NSMutableArray *)objectArrayWithFilename:(NSString *)filename
+{
+ return [self mj_objectArrayWithFilename:filename];
+}
+
++ (NSMutableArray *)objectArrayWithFilename:(NSString *)filename error:(NSError **)error
+{
+ id value = [self mj_objectArrayWithFilename:filename];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
++ (NSMutableArray *)objectArrayWithFile:(NSString *)file
+{
+ return [self mj_objectArrayWithFile:file];
+}
+
++ (NSMutableArray *)objectArrayWithFile:(NSString *)file error:(NSError **)error
+{
+ id value = [self mj_objectArrayWithFile:file];
+ if (error != NULL) {
+ *error = [self mj_error];
+ }
+ return value;
+}
+
+- (NSData *)JSONData
+{
+ return [self mj_JSONData];
+}
+
+- (id)JSONObject
+{
+ return [self mj_JSONObject];
+}
+
+- (NSString *)JSONString
+{
+ return [self mj_JSONString];
+}
+@end
\ No newline at end of file
diff --git a/SocketDemo/Utils/MJExtension/NSObject+MJProperty.h b/SocketDemo/Utils/MJExtension/NSObject+MJProperty.h
new file mode 100755
index 0000000..1a64732
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSObject+MJProperty.h
@@ -0,0 +1,79 @@
+//
+// NSObject+MJProperty.h
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/4/17.
+// Copyright (c) 2015��� ���������. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "MJExtensionConst.h"
+
+@class MJProperty;
+
+/**
+ * ������������������������block
+ *
+ * @param property ���������������������
+ * @param stop YES���������������������NO������������������
+ */
+typedef void (^MJPropertiesEnumeration)(MJProperty *property, BOOL *stop);
+
+/** ������������������������key������������������ */
+typedef NSDictionary * (^MJReplacedKeyFromPropertyName)();
+typedef NSString * (^MJReplacedKeyFromPropertyName121)(NSString *propertyName);
+/** ��������������������������������� */
+typedef NSDictionary * (^MJObjectClassInArray)();
+/** ��������������������������� */
+typedef id (^MJNewValueFromOldValue)(id object, id oldValue, MJProperty *property);
+
+/**
+ * ���������������������������
+ */
+@interface NSObject (MJProperty)
+#pragma mark - ������
+/**
+ * ���������������������
+ */
++ (void)mj_enumerateProperties:(MJPropertiesEnumeration)enumeration;
+
+#pragma mark - ������������
+/**
+ * ���������������������������
+ *
+ * @param newValueFormOldValue ���������������������������
+ */
++ (void)mj_setupNewValueFromOldValue:(MJNewValueFromOldValue)newValueFormOldValue;
++ (id)mj_getNewValueFromObject:(__unsafe_unretained id)object oldValue:(__unsafe_unretained id)oldValue property:(__unsafe_unretained MJProperty *)property;
+
+#pragma mark - key������
+/**
+ * ������������������������key������������������
+ *
+ * @param replacedKeyFromPropertyName ������������������������key������������������
+ */
++ (void)mj_setupReplacedKeyFromPropertyName:(MJReplacedKeyFromPropertyName)replacedKeyFromPropertyName;
+/**
+ * ������������������������key������������������
+ *
+ * @param replacedKeyFromPropertyName121 ������������������������key������������������
+ */
++ (void)mj_setupReplacedKeyFromPropertyName121:(MJReplacedKeyFromPropertyName121)replacedKeyFromPropertyName121;
+
+#pragma mark - array model class������
+/**
+ * ���������������������������������
+ *
+ * @param objectClassInArray ���������������������������������
+ */
++ (void)mj_setupObjectClassInArray:(MJObjectClassInArray)objectClassInArray;
+@end
+
+@interface NSObject (MJPropertyDeprecated_v_2_5_16)
++ (void)enumerateProperties:(MJPropertiesEnumeration)enumeration MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (void)setupNewValueFromOldValue:(MJNewValueFromOldValue)newValueFormOldValue MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (id)getNewValueFromObject:(__unsafe_unretained id)object oldValue:(__unsafe_unretained id)oldValue property:(__unsafe_unretained MJProperty *)property MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (void)setupReplacedKeyFromPropertyName:(MJReplacedKeyFromPropertyName)replacedKeyFromPropertyName MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (void)setupReplacedKeyFromPropertyName121:(MJReplacedKeyFromPropertyName121)replacedKeyFromPropertyName121 MJExtensionDeprecated("���������������������������mj_���������������mj_***");
++ (void)setupObjectClassInArray:(MJObjectClassInArray)objectClassInArray MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+@end
\ No newline at end of file
diff --git a/SocketDemo/Utils/MJExtension/NSObject+MJProperty.m b/SocketDemo/Utils/MJExtension/NSObject+MJProperty.m
new file mode 100755
index 0000000..9ac6134
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSObject+MJProperty.m
@@ -0,0 +1,271 @@
+//
+// NSObject+MJProperty.m
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/4/17.
+// Copyright (c) 2015��� ���������. All rights reserved.
+//
+
+#import "NSObject+MJProperty.h"
+#import "NSObject+MJKeyValue.h"
+#import "NSObject+MJCoding.h"
+#import "NSObject+MJClass.h"
+#import "MJProperty.h"
+#import "MJFoundation.h"
+#import <objc/runtime.h>
+
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wundeclared-selector"
+#pragma clang diagnostic ignored "-Warc-performSelector-leaks"
+
+static const char MJReplacedKeyFromPropertyNameKey = '\0';
+static const char MJReplacedKeyFromPropertyName121Key = '\0';
+static const char MJNewValueFromOldValueKey = '\0';
+static const char MJObjectClassInArrayKey = '\0';
+
+static const char MJCachedPropertiesKey = '\0';
+
+@implementation NSObject (Property)
+
+static NSMutableDictionary *replacedKeyFromPropertyNameDict_;
+static NSMutableDictionary *replacedKeyFromPropertyName121Dict_;
+static NSMutableDictionary *newValueFromOldValueDict_;
+static NSMutableDictionary *objectClassInArrayDict_;
+static NSMutableDictionary *cachedPropertiesDict_;
+
++ (void)load
+{
+ replacedKeyFromPropertyNameDict_ = [NSMutableDictionary dictionary];
+ replacedKeyFromPropertyName121Dict_ = [NSMutableDictionary dictionary];
+ newValueFromOldValueDict_ = [NSMutableDictionary dictionary];
+ objectClassInArrayDict_ = [NSMutableDictionary dictionary];
+ cachedPropertiesDict_ = [NSMutableDictionary dictionary];
+}
+
++ (NSMutableDictionary *)dictForKey:(const void *)key
+{
+ if (key == &MJReplacedKeyFromPropertyNameKey) return replacedKeyFromPropertyNameDict_;
+ if (key == &MJReplacedKeyFromPropertyName121Key) return replacedKeyFromPropertyName121Dict_;
+ if (key == &MJNewValueFromOldValueKey) return newValueFromOldValueDict_;
+ if (key == &MJObjectClassInArrayKey) return objectClassInArrayDict_;
+ if (key == &MJCachedPropertiesKey) return cachedPropertiesDict_;
+ return nil;
+}
+
+#pragma mark - --������������--
++ (NSString *)propertyKey:(NSString *)propertyName
+{
+ MJExtensionAssertParamNotNil2(propertyName, nil);
+
+ __block NSString *key = nil;
+ // ������������������������������key
+ if ([self respondsToSelector:@selector(mj_replacedKeyFromPropertyName121:)]) {
+ key = [self mj_replacedKeyFromPropertyName121:propertyName];
+ }
+ // ���������������
+ if ([self respondsToSelector:@selector(replacedKeyFromPropertyName121:)]) {
+ key = [self performSelector:@selector(replacedKeyFromPropertyName121) withObject:propertyName];
+ }
+
+ // ������block
+ if (!key) {
+ [self mj_enumerateAllClasses:^(__unsafe_unretained Class c, BOOL *stop) {
+ MJReplacedKeyFromPropertyName121 block = objc_getAssociatedObject(c, &MJReplacedKeyFromPropertyName121Key);
+ if (block) {
+ key = block(propertyName);
+ }
+ if (key) *stop = YES;
+ }];
+ }
+
+ // ������������������������������key
+ if (!key && [self respondsToSelector:@selector(mj_replacedKeyFromPropertyName)]) {
+ key = [self mj_replacedKeyFromPropertyName][propertyName];
+ }
+ // ���������������
+ if (!key && [self respondsToSelector:@selector(replacedKeyFromPropertyName)]) {
+ key = [self performSelector:@selector(replacedKeyFromPropertyName)][propertyName];
+ }
+
+ if (!key) {
+ [self mj_enumerateAllClasses:^(__unsafe_unretained Class c, BOOL *stop) {
+ NSDictionary *dict = objc_getAssociatedObject(c, &MJReplacedKeyFromPropertyNameKey);
+ if (dict) {
+ key = dict[propertyName];
+ }
+ if (key) *stop = YES;
+ }];
+ }
+
+ // 2.������������������key
+ if (!key) key = propertyName;
+
+ return key;
+}
+
++ (Class)propertyObjectClassInArray:(NSString *)propertyName
+{
+ __block id clazz = nil;
+ if ([self respondsToSelector:@selector(mj_objectClassInArray)]) {
+ clazz = [self mj_objectClassInArray][propertyName];
+ }
+ // ���������������
+ if ([self respondsToSelector:@selector(objectClassInArray)]) {
+ clazz = [self performSelector:@selector(objectClassInArray)][propertyName];
+ }
+
+ if (!clazz) {
+ [self mj_enumerateAllClasses:^(__unsafe_unretained Class c, BOOL *stop) {
+ NSDictionary *dict = objc_getAssociatedObject(c, &MJObjectClassInArrayKey);
+ if (dict) {
+ clazz = dict[propertyName];
+ }
+ if (clazz) *stop = YES;
+ }];
+ }
+
+ // ���������NSString������
+ if ([clazz isKindOfClass:[NSString class]]) {
+ clazz = NSClassFromString(clazz);
+ }
+ return clazz;
+}
+
+#pragma mark - --������������--
++ (void)mj_enumerateProperties:(MJPropertiesEnumeration)enumeration
+{
+ // ������������������
+ NSArray *cachedProperties = [self properties];
+
+ // ������������������
+ BOOL stop = NO;
+ for (MJProperty *property in cachedProperties) {
+ enumeration(property, &stop);
+ if (stop) break;
+ }
+}
+
+#pragma mark - ������������
++ (NSMutableArray *)properties
+{
+ NSMutableArray *cachedProperties = [self dictForKey:&MJCachedPropertiesKey][NSStringFromClass(self)];
+
+ if (cachedProperties == nil) {
+ cachedProperties = [NSMutableArray array];
+
+ [self mj_enumerateClasses:^(__unsafe_unretained Class c, BOOL *stop) {
+ // 1.���������������������������
+ unsigned int outCount = 0;
+ objc_property_t *properties = class_copyPropertyList(c, &outCount);
+
+ // 2.���������������������������
+ for (unsigned int i = 0; i<outCount; i++) {
+ MJProperty *property = [MJProperty cachedPropertyWithProperty:properties[i]];
+ // ������������������������������������
+ if ([property.name isEqualToString:@"hash"]
+ || [property.name isEqualToString:@"superclass"]
+ || [property.name isEqualToString:@"description"]
+ || [property.name isEqualToString:@"debugDescription"]) {
+ continue;
+ }
+ property.srcClass = c;
+ [property setOriginKey:[self propertyKey:property.name] forClass:self];
+ [property setObjectClassInArray:[self propertyObjectClassInArray:property.name] forClass:self];
+ [cachedProperties addObject:property];
+ }
+
+ // 3.������������
+ free(properties);
+ }];
+
+ [self dictForKey:&MJCachedPropertiesKey][NSStringFromClass(self)] = cachedProperties;
+ }
+
+ return cachedProperties;
+}
+
+#pragma mark - ������������
++ (void)mj_setupNewValueFromOldValue:(MJNewValueFromOldValue)newValueFormOldValue
+{
+ objc_setAssociatedObject(self, &MJNewValueFromOldValueKey, newValueFormOldValue, OBJC_ASSOCIATION_COPY_NONATOMIC);
+}
+
++ (id)mj_getNewValueFromObject:(__unsafe_unretained id)object oldValue:(__unsafe_unretained id)oldValue property:(MJProperty *__unsafe_unretained)property{
+ // ���������������������
+ if ([object respondsToSelector:@selector(mj_newValueFromOldValue:property:)]) {
+ return [object mj_newValueFromOldValue:oldValue property:property];
+ }
+ // ���������������
+ if ([self respondsToSelector:@selector(newValueFromOldValue:property:)]) {
+ return [self performSelector:@selector(newValueFromOldValue:property:) withObject:oldValue withObject:property];
+ }
+
+ // ������������������
+ __block id newValue = oldValue;
+ [self mj_enumerateAllClasses:^(__unsafe_unretained Class c, BOOL *stop) {
+ MJNewValueFromOldValue block = objc_getAssociatedObject(c, &MJNewValueFromOldValueKey);
+ if (block) {
+ newValue = block(object, oldValue, property);
+ *stop = YES;
+ }
+ }];
+ return newValue;
+}
+
+#pragma mark - array model class������
++ (void)mj_setupObjectClassInArray:(MJObjectClassInArray)objectClassInArray
+{
+ [self mj_setupBlockReturnValue:objectClassInArray key:&MJObjectClassInArrayKey];
+
+ [[self dictForKey:&MJCachedPropertiesKey] removeAllObjects];
+}
+
+#pragma mark - key������
++ (void)mj_setupReplacedKeyFromPropertyName:(MJReplacedKeyFromPropertyName)replacedKeyFromPropertyName
+{
+ [self mj_setupBlockReturnValue:replacedKeyFromPropertyName key:&MJReplacedKeyFromPropertyNameKey];
+
+ [[self dictForKey:&MJCachedPropertiesKey] removeAllObjects];
+}
+
++ (void)mj_setupReplacedKeyFromPropertyName121:(MJReplacedKeyFromPropertyName121)replacedKeyFromPropertyName121
+{
+ objc_setAssociatedObject(self, &MJReplacedKeyFromPropertyName121Key, replacedKeyFromPropertyName121, OBJC_ASSOCIATION_COPY_NONATOMIC);
+
+ [[self dictForKey:&MJCachedPropertiesKey] removeAllObjects];
+}
+@end
+
+@implementation NSObject (MJPropertyDeprecated_v_2_5_16)
++ (void)enumerateProperties:(MJPropertiesEnumeration)enumeration
+{
+ [self mj_enumerateProperties:enumeration];
+}
+
++ (void)setupNewValueFromOldValue:(MJNewValueFromOldValue)newValueFormOldValue
+{
+ [self mj_setupNewValueFromOldValue:newValueFormOldValue];
+}
+
++ (id)getNewValueFromObject:(__unsafe_unretained id)object oldValue:(__unsafe_unretained id)oldValue property:(__unsafe_unretained MJProperty *)property
+{
+ return [self mj_getNewValueFromObject:object oldValue:oldValue property:property];
+}
+
++ (void)setupReplacedKeyFromPropertyName:(MJReplacedKeyFromPropertyName)replacedKeyFromPropertyName
+{
+ [self mj_setupReplacedKeyFromPropertyName:replacedKeyFromPropertyName];
+}
+
++ (void)setupReplacedKeyFromPropertyName121:(MJReplacedKeyFromPropertyName121)replacedKeyFromPropertyName121
+{
+ [self mj_setupReplacedKeyFromPropertyName121:replacedKeyFromPropertyName121];
+}
+
++ (void)setupObjectClassInArray:(MJObjectClassInArray)objectClassInArray
+{
+ [self mj_setupObjectClassInArray:objectClassInArray];
+}
+@end
+
+#pragma clang diagnostic pop
diff --git a/SocketDemo/Utils/MJExtension/NSString+MJExtension.h b/SocketDemo/Utils/MJExtension/NSString+MJExtension.h
new file mode 100755
index 0000000..40add04
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSString+MJExtension.h
@@ -0,0 +1,42 @@
+//
+// NSString+MJExtension.h
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/6/7.
+// Copyright (c) 2015��� ���������. All rights reserved.
+//
+
+#import <Foundation/Foundation.h>
+#import "MJExtensionConst.h"
+
+@interface NSString (MJExtension)
+/**
+ * ���������������������loveYou -> love_you���
+ */
+- (NSString *)mj_underlineFromCamel;
+/**
+ * ���������������������love_you -> loveYou���
+ */
+- (NSString *)mj_camelFromUnderline;
+/**
+ * ������������������
+ */
+- (NSString *)mj_firstCharUpper;
+/**
+ * ������������������
+ */
+- (NSString *)mj_firstCharLower;
+
+- (BOOL)mj_isPureInt;
+
+- (NSURL *)mj_url;
+@end
+
+@interface NSString (MJExtensionDeprecated_v_2_5_16)
+- (NSString *)underlineFromCamel MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSString *)camelFromUnderline MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSString *)firstCharUpper MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSString *)firstCharLower MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (BOOL)isPureInt MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+- (NSURL *)url MJExtensionDeprecated("���������������������������mj_���������������mj_***");
+@end
diff --git a/SocketDemo/Utils/MJExtension/NSString+MJExtension.m b/SocketDemo/Utils/MJExtension/NSString+MJExtension.m
new file mode 100755
index 0000000..050a061
--- /dev/null
+++ b/SocketDemo/Utils/MJExtension/NSString+MJExtension.m
@@ -0,0 +1,110 @@
+//
+// NSString+MJExtension.m
+// MJExtensionExample
+//
+// Created by MJ Lee on 15/6/7.
+// Copyright (c) 2015��� ���������. All rights reserved.
+//
+
+#import "NSString+MJExtension.h"
+
+@implementation NSString (MJExtension)
+- (NSString *)mj_underlineFromCamel
+{
+ if (self.length == 0) return self;
+ NSMutableString *string = [NSMutableString string];
+ for (NSUInteger i = 0; i<self.length; i++) {
+ unichar c = [self characterAtIndex:i];
+ NSString *cString = [NSString stringWithFormat:@"%c", c];
+ NSString *cStringLower = [cString lowercaseString];
+ if ([cString isEqualToString:cStringLower]) {
+ [string appendString:cStringLower];
+ } else {
+ [string appendString:@"_"];
+ [string appendString:cStringLower];
+ }
+ }
+ return string;
+}
+
+- (NSString *)mj_camelFromUnderline
+{
+ if (self.length == 0) return self;
+ NSMutableString *string = [NSMutableString string];
+ NSArray *cmps = [self componentsSeparatedByString:@"_"];
+ for (NSUInteger i = 0; i<cmps.count; i++) {
+ NSString *cmp = cmps[i];
+ if (i && cmp.length) {
+ [string appendString:[NSString stringWithFormat:@"%c", [cmp characterAtIndex:0]].uppercaseString];
+ if (cmp.length >= 2) [string appendString:[cmp substringFromIndex:1]];
+ } else {
+ [string appendString:cmp];
+ }
+ }
+ return string;
+}
+
+- (NSString *)mj_firstCharLower
+{
+ if (self.length == 0) return self;
+ NSMutableString *string = [NSMutableString string];
+ [string appendString:[NSString stringWithFormat:@"%c", [self characterAtIndex:0]].lowercaseString];
+ if (self.length >= 2) [string appendString:[self substringFromIndex:1]];
+ return string;
+}
+
+- (NSString *)mj_firstCharUpper
+{
+ if (self.length == 0) return self;
+ NSMutableString *string = [NSMutableString string];
+ [string appendString:[NSString stringWithFormat:@"%c", [self characterAtIndex:0]].uppercaseString];
+ if (self.length >= 2) [string appendString:[self substringFromIndex:1]];
+ return string;
+}
+
+- (BOOL)mj_isPureInt
+{
+ NSScanner *scan = [NSScanner scannerWithString:self];
+ int val;
+ return [scan scanInt:&val] && [scan isAtEnd];
+}
+
+- (NSURL *)mj_url
+{
+// [self stringByAddingPercentEncodingWithAllowedCharacters:[NSCharacterSet characterSetWithCharactersInString:@"!$&'()*+,-./:;=?@_~%#[]"]];
+
+ return [NSURL URLWithString:(NSString *)CFBridgingRelease(CFURLCreateStringByAddingPercentEscapes(kCFAllocatorDefault, (CFStringRef)self, (CFStringRef)@"!$&'()*+,-./:;=?@_~%#[]", NULL,kCFStringEncodingUTF8))];
+}
+@end
+
+@implementation NSString (MJExtensionDeprecated_v_2_5_16)
+- (NSString *)underlineFromCamel
+{
+ return self.mj_underlineFromCamel;
+}
+
+- (NSString *)camelFromUnderline
+{
+ return self.mj_camelFromUnderline;
+}
+
+- (NSString *)firstCharLower
+{
+ return self.mj_firstCharLower;
+}
+
+- (NSString *)firstCharUpper
+{
+ return self.mj_firstCharUpper;
+}
+
+- (BOOL)isPureInt
+{
+ return self.mj_isPureInt;
+}
+
+- (NSURL *)url
+{
+ return self.mj_url;
+}
+@end
--
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