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// 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" #import "AFNetworkReachabilityManager.h" #ifndef NS_DESIGNATED_INITIALIZER #if __has_attribute(objc_designated_initializer) #define NS_DESIGNATED_INITIALIZER __attribute__((objc_designated_initializer)) #else #define NS_DESIGNATED_INITIALIZER #endif #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 #if (defined(__IPHONE_OS_VERSION_MAX_ALLOWED) && __IPHONE_OS_VERSION_MAX_ALLOWED >= 70000) || (defined(__MAC_OS_X_VERSION_MAX_ALLOWED) && __MAC_OS_X_VERSION_MAX_ALLOWED >= 1090) @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 request operations to evaluate server trust for secure connections. `AFURLSessionManager` uses the `defaultPolicy` unless otherwise specified. */ @property (nonatomic, strong) AFSecurityPolicy *securityPolicy; ///-------------------------------------- /// @name Monitoring Network Reachability ///-------------------------------------- /** The network reachability manager. `AFURLSessionManager` uses the `sharedManager` by default. */ @property (readwrite, nonatomic, strong) AFNetworkReachabilityManager *reachabilityManager; ///---------------------------- /// @name Getting Session Tasks ///---------------------------- /** The data, upload, and download tasks currently run by the managed session. */ @property (readonly, nonatomic, strong) NSArray *tasks; /** The data tasks currently run by the managed session. */ @property (readonly, nonatomic, strong) NSArray *dataTasks; /** The upload tasks currently run by the managed session. */ @property (readonly, nonatomic, strong) NSArray *uploadTasks; /** The download tasks currently run by the managed session. */ @property (readonly, nonatomic, strong) NSArray *downloadTasks; ///------------------------------- /// @name Managing Callback Queues ///------------------------------- /** The dispatch queue for `completionBlock`. If `NULL` (default), the main queue is used. */ #if OS_OBJECT_HAVE_OBJC_SUPPORT @property (nonatomic, strong, nullable) dispatch_queue_t completionQueue; #else @property (nonatomic, assign, nullable) dispatch_queue_t completionQueue; #endif /** The dispatch group for `completionBlock`. If `NULL` (default), a private dispatch group is used. */ #if OS_OBJECT_HAVE_OBJC_SUPPORT @property (nonatomic, strong, nullable) dispatch_group_t completionGroup; #else @property (nonatomic, assign, nullable) dispatch_group_t completionGroup; #endif ///--------------------------------- /// @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 */ @propert