// AFNetworkReachabilityManager.h
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// Copyright (c) 2011–2016 Alamofire Software Foundation ( http://alamofire.org/ )
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//
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// Permission is hereby granted, free of charge, to any person obtaining a copy
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// of this software and associated documentation files (the "Software"), to deal
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// in the Software without restriction, including without limitation the rights
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// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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// copies of the Software, and to permit persons to whom the Software is
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// furnished to do so, subject to the following conditions:
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//
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// The above copyright notice and this permission notice shall be included in
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// all copies or substantial portions of the Software.
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//
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// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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// THE SOFTWARE.
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#import <Foundation/Foundation.h>
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#if !TARGET_OS_WATCH
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#import <SystemConfiguration/SystemConfiguration.h>
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typedef NS_ENUM(NSInteger, AFNetworkReachabilityStatus) {
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AFNetworkReachabilityStatusUnknown = -1,
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AFNetworkReachabilityStatusNotReachable = 0,
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AFNetworkReachabilityStatusReachableViaWWAN = 1,
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AFNetworkReachabilityStatusReachableViaWiFi = 2,
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};
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NS_ASSUME_NONNULL_BEGIN
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/**
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`AFNetworkReachabilityManager` monitors the reachability of domains, and addresses for both WWAN and WiFi network interfaces.
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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.
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See Apple's Reachability Sample Code ( https://developer.apple.com/library/ios/samplecode/reachability/ )
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@warning Instances of `AFNetworkReachabilityManager` must be started with `-startMonitoring` before reachability status can be determined.
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*/
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@interface AFNetworkReachabilityManager : NSObject
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/**
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The current network reachability status.
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*/
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@property (readonly, nonatomic, assign) AFNetworkReachabilityStatus networkReachabilityStatus;
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/**
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Whether or not the network is currently reachable.
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*/
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@property (readonly, nonatomic, assign, getter = isReachable) BOOL reachable;
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/**
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Whether or not the network is currently reachable via WWAN.
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*/
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@property (readonly, nonatomic, assign, getter = isReachableViaWWAN) BOOL reachableViaWWAN;
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/**
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Whether or not the network is currently reachable via WiFi.
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*/
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@property (readonly, nonatomic, assign, getter = isReachableViaWiFi) BOOL reachableViaWiFi;
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///---------------------
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/// @name Initialization
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///---------------------
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/**
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Returns the shared network reachability manager.
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*/
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+ (instancetype)sharedManager;
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/**
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Creates and returns a network reachability manager with the default socket address.
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@return An initialized network reachability manager, actively monitoring the default socket address.
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*/
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+ (instancetype)manager;
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/**
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Creates and returns a network reachability manager for the specified domain.
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@param domain The domain used to evaluate network reachability.
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@return An initialized network reachability manager, actively monitoring the specified domain.
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*/
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+ (instancetype)managerForDomain:(NSString *)domain;
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/**
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Creates and returns a network reachability manager for the socket address.
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@param address The socket address (`sockaddr_in6`) used to evaluate network reachability.
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@return An initialized network reachability manager, actively monitoring the specified socket address.
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*/
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+ (instancetype)managerForAddress:(const void *)address;
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/**
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Initializes an instance of a network reachability manager from the specified reachability object.
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@param reachability The reachability object to monitor.
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@return An initialized network reachability manager, actively monitoring the specified reachability.
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*/
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- (instancetype)initWithReachability:(SCNetworkReachabilityRef)reachability NS_DESIGNATED_INITIALIZER;
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/**
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* Unavailable initializer
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*/
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+ (instancetype)new NS_UNAVAILABLE;
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/**
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* Unavailable initializer
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*/
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- (instancetype)init NS_UNAVAILABLE;
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///--------------------------------------------------
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/// @name Starting & Stopping Reachability Monitoring
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///--------------------------------------------------
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/**
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Starts monitoring for changes in network reachability status.
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*/
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- (void)startMonitoring;
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/**
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Stops monitoring for changes in network reachability status.
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*/
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- (void)stopMonitoring;
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///-------------------------------------------------
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/// @name Getting Localized Reachability Description
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///-------------------------------------------------
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/**
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Returns a localized string representation of the current network reachability status.
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*/
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- (NSString *)localizedNetworkReachabilityStatusString;
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///---------------------------------------------------
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/// @name Setting Network Reachability Change Callback
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///---------------------------------------------------
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/**
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Sets a callback to be executed when the network availability of the `baseURL` host changes.
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@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`.
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*/
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- (void)setReachabilityStatusChangeBlock:(nullable void (^)(AFNetworkReachabilityStatus status))block;
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@end
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///----------------
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/// @name Constants
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///----------------
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/**
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## Network Reachability
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The following constants are provided by `AFNetworkReachabilityManager` as possible network reachability statuses.
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enum {
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AFNetworkReachabilityStatusUnknown,
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AFNetworkReachabilityStatusNotReachable,
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AFNetworkReachabilityStatusReachableViaWWAN,
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AFNetworkReachabilityStatusReachableViaWiFi,
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}
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`AFNetworkReachabilityStatusUnknown`
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The `baseURL` host reachability is not known.
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`AFNetworkReachabilityStatusNotReachable`
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The `baseURL` host cannot be reached.
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`AFNetworkReachabilityStatusReachableViaWWAN`
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The `baseURL` host can be reached via a cellular connection, such as EDGE or GPRS.
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`AFNetworkReachabilityStatusReachableViaWiFi`
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The `baseURL` host can be reached via a Wi-Fi connection.
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### Keys for Notification UserInfo Dictionary
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Strings that are used as keys in a `userInfo` dictionary in a network reachability status change notification.
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`AFNetworkingReachabilityNotificationStatusItem`
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A key in the userInfo dictionary in a `AFNetworkingReachabilityDidChangeNotification` notification.
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The corresponding value is an `NSNumber` object representing the `AFNetworkReachabilityStatus` value for the current reachability status.
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*/
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///--------------------
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/// @name Notifications
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///--------------------
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/**
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Posted when network reachability changes.
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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.
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@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`).
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*/
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FOUNDATION_EXPORT NSString * const AFNetworkingReachabilityDidChangeNotification;
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FOUNDATION_EXPORT NSString * const AFNetworkingReachabilityNotificationStatusItem;
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///--------------------
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/// @name Functions
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///--------------------
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/**
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Returns a localized string representation of an `AFNetworkReachabilityStatus` value.
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*/
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FOUNDATION_EXPORT NSString * AFStringFromNetworkReachabilityStatus(AFNetworkReachabilityStatus status);
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NS_ASSUME_NONNULL_END
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#endif
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