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- // AFNetworkReachabilityManager.h
- // Copyright (c) 2011–2016 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>
- 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 with the default socket address.
-
- @return An initialized network reachability manager, actively monitoring the default socket address.
- */
- + (instancetype)manager;
- /**
- 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_in6`) 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;
- /**
- * Unavailable initializer
- */
- + (instancetype)new NS_UNAVAILABLE;
- /**
- * Unavailable initializer
- */
- - (instancetype)init NS_UNAVAILABLE;
- ///--------------------------------------------------
- /// @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`).
- */
- FOUNDATION_EXPORT NSString * const AFNetworkingReachabilityDidChangeNotification;
- FOUNDATION_EXPORT NSString * const AFNetworkingReachabilityNotificationStatusItem;
- ///--------------------
- /// @name Functions
- ///--------------------
- /**
- Returns a localized string representation of an `AFNetworkReachabilityStatus` value.
- */
- FOUNDATION_EXPORT NSString * AFStringFromNetworkReachabilityStatus(AFNetworkReachabilityStatus status);
- NS_ASSUME_NONNULL_END
- #endif
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