// 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>
|
|
#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
|
|
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 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_in`) 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`).
|
*/
|
extern NSString * const AFNetworkingReachabilityDidChangeNotification;
|
extern NSString * const AFNetworkingReachabilityNotificationStatusItem;
|
|
///--------------------
|
/// @name Functions
|
///--------------------
|
|
/**
|
Returns a localized string representation of an `AFNetworkReachabilityStatus` value.
|
*/
|
extern NSString * AFStringFromNetworkReachabilityStatus(AFNetworkReachabilityStatus status);
|
|
NS_ASSUME_NONNULL_END
|
#endif
|
