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/*
* Copyright 2017 Google
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#import <Foundation/Foundation.h>
#import "GULNetworkConstants.h"
#import "GULNetworkLoggerProtocol.h"
#import "GULNetworkURLSession.h"
/// Delegate protocol for GULNetwork events.
@protocol GULNetworkReachabilityDelegate
/// Tells the delegate to handle events when the network reachability changes to connected or not
/// connected.
- (void)reachabilityDidChange;
@end
/// The Network component that provides network status and handles network requests and responses.
/// This is not thread safe.
///
/// NOTE:
/// User must add FIRAnalytics handleEventsForBackgroundURLSessionID:completionHandler to the
/// AppDelegate application:handleEventsForBackgroundURLSession:completionHandler:
@interface GULNetwork : NSObject
/// Indicates if network connectivity is available.
@property(nonatomic, readonly, getter=isNetworkConnected) BOOL networkConnected;
/// Indicates if there are any uploads in progress.
@property(nonatomic, readonly, getter=hasUploadInProgress) BOOL uploadInProgress;
/// An optional delegate that can be used in the event when network reachability changes.
@property(nonatomic, weak) id<GULNetworkReachabilityDelegate> reachabilityDelegate;
/// An optional delegate that can be used to log messages, warnings or errors that occur in the
/// network operations.
@property(nonatomic, weak) id<GULNetworkLoggerDelegate> loggerDelegate;
/// Indicates whether the logger should display debug messages.
@property(nonatomic, assign) BOOL isDebugModeEnabled;
/// The time interval in seconds for the network request to timeout.
@property(nonatomic, assign) NSTimeInterval timeoutInterval;
/// Initializes with the default reachability host.
- (instancetype)init;
/// Initializes with a custom reachability host.
- (instancetype)initWithReachabilityHost:(NSString *)reachabilityHost;
/// Handles events when background session with the given ID has finished.
+ (void)handleEventsForBackgroundURLSessionID:(NSString *)sessionID
completionHandler:(GULNetworkSystemCompletionHandler)completionHandler;
/// Compresses and sends a POST request with the provided data to the URL. The session will be
/// background session if usingBackgroundSession is YES. Otherwise, the POST session is default
/// session. Returns a session ID or nil if an error occurs.
- (NSString *)postURL:(NSURL *)url
payload:(NSData *)payload
queue:(dispatch_queue_t)queue
usingBackgroundSession:(BOOL)usingBackgroundSession
completionHandler:(GULNetworkCompletionHandler)handler;
/// Sends a GET request with the provided data to the URL. The session will be background session
/// if usingBackgroundSession is YES. Otherwise, the GET session is default session. Returns a
/// session ID or nil if an error occurs.
- (NSString *)getURL:(NSURL *)url
headers:(NSDictionary *)headers
queue:(dispatch_queue_t)queue
usingBackgroundSession:(BOOL)usingBackgroundSession
completionHandler:(GULNetworkCompletionHandler)handler;
@end
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