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// AFHTTPRequestOperation.m
//
// Copyright (c) 2013-2014 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 "AFHTTPRequestOperation.h"
static dispatch_queue_t http_request_operation_processing_queue() {
static dispatch_queue_t af_http_request_operation_processing_queue;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
af_http_request_operation_processing_queue = dispatch_queue_create("com.alamofire.networking.http-request.processing", DISPATCH_QUEUE_CONCURRENT);
});
return af_http_request_operation_processing_queue;
}
static dispatch_group_t http_request_operation_completion_group() {
static dispatch_group_t af_http_request_operation_completion_group;
static dispatch_once_t onceToken;
dispatch_once(&onceToken, ^{
af_http_request_operation_completion_group = dispatch_group_create();
});
return af_http_request_operation_completion_group;
}
#pragma mark -
@interface AFURLConnectionOperation ()
@property (readwrite, nonatomic, strong) NSURLRequest *request;
@property (readwrite, nonatomic, strong) NSURLResponse *response;
@end
@interface AFHTTPRequestOperation ()
@property (readwrite, nonatomic, strong) NSHTTPURLResponse *response;
@property (readwrite, nonatomic, strong) id responseObject;
@property (readwrite, nonatomic, strong) NSError *responseSerializationError;
@property (readwrite, nonatomic, strong) NSRecursiveLock *lock;
@end
@implementation AFHTTPRequestOperation
@dynamic lock;
- (instancetype)initWithRequest:(NSURLRequest *)urlRequest {
self = [super initWithRequest:urlRequest];
if (!self) {
return nil;
}
self.responseSerializer = [AFHTTPResponseSerializer serializer];
return self;
}
- (void)setResponseSerializer:(AFHTTPResponseSerializer <AFURLResponseSerialization> *)responseSerializer {
NSParameterAssert(responseSerializer);
[self.lock lock];
_responseSerializer = responseSerializer;
self.responseObject = nil;
self.responseSerializationError = nil;
[self.lock unlock];
}
- (id)responseObject {
[self.lock lock];
if (!_responseObject && [self isFinished] && !self.error) {
NSError *error = nil;
self.responseObject = [self.responseSerializer responseObjectForResponse:self.response data:self.responseData error:&error];
if (error) {
self.responseSerializationError = error;
}
}
[self.lock unlock];
return _responseObject;
}
- (NSError *)error {
if (_responseSerializationError) {
return _responseSerializationError;
} else {
return [super error];
}
}
#pragma mark - AFHTTPRequestOperation
- (void)setCompletionBlockWithSuccess:(void (^)(AFHTTPRequestOperation *operation, id responseObject))success
failure:(void (^)(AFHTTPRequestOperation *operation, NSError *error))failure
{
// completionBlock is manually nilled out in AFURLConnectionOperation to break the retain cycle.
#pragma clang diagnostic push
#pragma clang diagnostic ignored "-Warc-retain-cycles"
#pragma clang diagnostic ignored "-Wgnu"
self.completionBlock = ^{
if (self.completionGroup) {
dispatch_group_enter(self.completionGroup);
}
dispatch_async(http_request_operation_processing_queue(), ^{
if (self.error) {
if (failure) {
dispatch_group_async(self.completionGroup ?: http_request_operation_completion_group(), self.completionQueue ?: dispatch_get_main_queue(), ^{
failure(self, self.error);
});
}
} else {
id responseObject = self.responseObject;
if (self.error) {
if (failure) {
dispatch_group_async(self.completionGroup ?: http_request_operation_completion_group(), self.completionQueue ?: dispatch_get_main_queue(), ^{
failure(self, self.error);
});
}
} else {
if (success) {
dispatch_group_async(self.completionGroup ?: http_request_operation_completion_group(), self.completionQueue ?: dispatch_get_main_queue(), ^{
success(self, responseObject);
});
}
}
}
if (self.completionGroup) {
dispatch_group_leave(self.completionGroup);
}
});
};
#pragma clang diagnostic pop
}
#pragma mark - AFURLRequestOperation
- (void)pause {
[super pause];
u_int64_t offset = 0;
if ([self.outputStream propertyForKey:NSStreamFileCurrentOffsetKey]) {
offset = [(NSNumber *)[self.outputStream propertyForKey:NSStreamFileCurrentOffsetKey] unsignedLongLongValue];
} else {
offset = [(NSData *)[self.outputStream propertyForKey:NSStreamDataWrittenToMemoryStreamKey] length];
}
NSMutableURLRequest *mutableURLRequest = [self.request mutableCopy];
if ([self.response respondsToSelector:@selector(allHeaderFields)] && [[self.response allHeaderFields] valueForKey:@"ETag"]) {
[mutableURLRequest setValue:[[self.response allHeaderFields] valueForKey:@"ETag"] forHTTPHeaderField:@"If-Range"];
}
[mutableURLRequest setValue:[NSString stringWithFormat:@"bytes=%llu-", offset] forHTTPHeaderField:@"Range"];
self.request = mutableURLRequest;
}
#pragma mark - NSSecureCoding
+ (BOOL)supportsSecureCoding {
return YES;
}
- (id)initWithCoder:(NSCoder *)decoder {
self = [super initWithCoder:decoder];
if (!self) {
return nil;
}
self.responseSerializer = [decoder decodeObjectOfClass:[AFHTTPResponseSerializer class] forKey:NSStringFromSelector(@selector(responseSerializer))];
return self;
}
- (void)encodeWithCoder:(NSCoder *)coder {
[super encodeWithCoder:coder];
[coder encodeObject:self.responseSerializer forKey:NSStringFromSelector(@selector(responseSerializer))];
}
#pragma mark - NSCopying
- (id)copyWithZone:(NSZone *)zone {
AFHTTPRequestOperation *operation = [super copyWithZone:zone];
operation.responseSerializer = [self.responseSerializer copyWithZone:zone];
operation.completionQueue = self.completionQueue;
operation.completionGroup = self.completionGroup;
return operation;
}
@end
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