// AFHTTPRequestOperation.m
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// Copyright (c) 2011–2015 Alamofire Software Foundation (http://alamofire.org/)
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#import "AFHTTPRequestOperation.h"
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static dispatch_queue_t http_request_operation_processing_queue() {
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static dispatch_queue_t af_http_request_operation_processing_queue;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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af_http_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.http-request.processing", DISPATCH_QUEUE_CONCURRENT);
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});
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return af_http_request_operation_processing_queue;
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}
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static dispatch_group_t http_request_operation_completion_group() {
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static dispatch_group_t af_http_request_operation_completion_group;
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static dispatch_once_t onceToken;
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dispatch_once(&onceToken, ^{
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af_http_request_operation_completion_group = dispatch_group_create();
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});
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return af_http_request_operation_completion_group;
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}
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#pragma mark -
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@interface AFURLConnectionOperation ()
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@property (readwrite, nonatomic, strong) NSURLRequest *request;
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@property (readwrite, nonatomic, strong) NSURLResponse *response;
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@end
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@interface AFHTTPRequestOperation ()
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@property (readwrite, nonatomic, strong) NSHTTPURLResponse *response;
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@property (readwrite, nonatomic, strong) id responseObject;
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@property (readwrite, nonatomic, strong) NSError *responseSerializationError;
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@property (readwrite, nonatomic, strong) NSRecursiveLock *lock;
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@end
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@implementation AFHTTPRequestOperation
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@dynamic response;
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@dynamic lock;
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- (instancetype)initWithRequest:(NSURLRequest *)urlRequest {
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self = [super initWithRequest:urlRequest];
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if (!self) {
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return nil;
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}
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self.responseSerializer = [AFHTTPResponseSerializer serializer];
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return self;
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}
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- (void)setResponseSerializer:(AFHTTPResponseSerializer <AFURLResponseSerialization> *)responseSerializer {
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NSParameterAssert(responseSerializer);
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[self.lock lock];
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_responseSerializer = responseSerializer;
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self.responseObject = nil;
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self.responseSerializationError = nil;
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[self.lock unlock];
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}
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- (id)responseObject {
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[self.lock lock];
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if (!_responseObject && [self isFinished] && !self.error) {
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NSError *error = nil;
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self.responseObject = [self.responseSerializer responseObjectForResponse:self.response data:self.responseData error:&error];
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if (error) {
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self.responseSerializationError = error;
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}
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}
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[self.lock unlock];
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return _responseObject;
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}
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- (NSError *)error {
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if (_responseSerializationError) {
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return _responseSerializationError;
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} else {
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return [super error];
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}
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}
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#pragma mark - AFHTTPRequestOperation
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- (void)setCompletionBlockWithSuccess:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
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failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
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{
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// completionBlock is manually nilled out in AFURLConnectionOperation to break the retain cycle.
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#pragma clang diagnostic push
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#pragma clang diagnostic ignored "-Warc-retain-cycles"
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#pragma clang diagnostic ignored "-Wgnu"
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self.completionBlock = ^{
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if (self.completionGroup) {
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dispatch_group_enter(self.completionGroup);
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}
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dispatch_async(http_request_operation_processing_queue(), ^{
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if (self.error) {
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if (failure) {
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dispatch_group_async(self.completionGroup ?: http_request_operation_completion_group(), self.completionQueue ?: dispatch_get_main_queue(), ^{
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failure(self, self.error);
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});
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}
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} else {
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id responseObject = self.responseObject;
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if (self.error) {
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if (failure) {
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dispatch_group_async(self.completionGroup ?: http_request_operation_completion_group(), self.completionQueue ?: dispatch_get_main_queue(), ^{
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failure(self, self.error);
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});
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}
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} else {
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if (success) {
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dispatch_group_async(self.completionGroup ?: http_request_operation_completion_group(), self.completionQueue ?: dispatch_get_main_queue(), ^{
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success(self, responseObject);
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});
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}
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}
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}
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if (self.completionGroup) {
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dispatch_group_leave(self.completionGroup);
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}
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});
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};
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#pragma clang diagnostic pop
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}
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#pragma mark - AFURLRequestOperation
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- (void)pause {
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[super pause];
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u_int64_t offset = 0;
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if ([self.outputStream propertyForKey:NSStreamFileCurrentOffsetKey]) {
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offset = [(NSNumber *)[self.outputStream propertyForKey:NSStreamFileCurrentOffsetKey] unsignedLongLongValue];
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} else {
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offset = [(NSData *)[self.outputStream propertyForKey:NSStreamDataWrittenToMemoryStreamKey] length];
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}
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NSMutableURLRequest *mutableURLRequest = [self.request mutableCopy];
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if ([self.response respondsToSelector:@selector(allHeaderFields)] && [[self.response allHeaderFields] valueForKey:@"ETag"]) {
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[mutableURLRequest setValue:[[self.response allHeaderFields] valueForKey:@"ETag"] forHTTPHeaderField:@"If-Range"];
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}
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[mutableURLRequest setValue:[NSString stringWithFormat:@"bytes=%llu-", offset] forHTTPHeaderField:@"Range"];
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self.request = mutableURLRequest;
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}
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#pragma mark - NSSecureCoding
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+ (BOOL)supportsSecureCoding {
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return YES;
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}
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- (id)initWithCoder:(NSCoder *)decoder {
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self = [super initWithCoder:decoder];
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if (!self) {
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return nil;
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}
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self.responseSerializer = [decoder decodeObjectOfClass:[AFHTTPResponseSerializer class] forKey:NSStringFromSelector(@selector(responseSerializer))];
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return self;
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}
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- (void)encodeWithCoder:(NSCoder *)coder {
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[super encodeWithCoder:coder];
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[coder encodeObject:self.responseSerializer forKey:NSStringFromSelector(@selector(responseSerializer))];
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}
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#pragma mark - NSCopying
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- (id)copyWithZone:(NSZone *)zone {
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AFHTTPRequestOperation *operation = [super copyWithZone:zone];
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operation.responseSerializer = [self.responseSerializer copyWithZone:zone];
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operation.completionQueue = self.completionQueue;
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operation.completionGroup = self.completionGroup;
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return operation;
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}
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@end
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