/*
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File: BUReachability.h
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Abstract: Basic demonstration of how to use the SystemConfiguration Reachablity APIs.
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Version: 3.5
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Disclaimer: IMPORTANT: This Apple software is supplied to you by Apple
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Inc. ("Apple") in consideration of your agreement to the following
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In consideration of your agreement to abide by the following terms, and
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subject to these terms, Apple grants you a personal, non-exclusive
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"Apple Software"), to use, reproduce, modify and redistribute the Apple
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text and disclaimers in all such redistributions of the Apple Software.
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implied, are granted by Apple herein, including but not limited to any
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patent rights that may be infringed by your derivative works or by other
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works in which the Apple Software may be incorporated.
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The Apple Software is provided by Apple on an "AS IS" basis. APPLE
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MAKES NO WARRANTIES, EXPRESS OR IMPLIED, INCLUDING WITHOUT LIMITATION
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THE IMPLIED WARRANTIES OF NON-INFRINGEMENT, MERCHANTABILITY AND FITNESS
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FOR A PARTICULAR PURPOSE, REGARDING THE APPLE SOFTWARE OR ITS USE AND
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IN NO EVENT SHALL APPLE BE LIABLE FOR ANY SPECIAL, INDIRECT, INCIDENTAL
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Copyright (C) 2014 Apple Inc. All Rights Reserved.
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*/
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#import <Foundation/Foundation.h>
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#import <SystemConfiguration/SystemConfiguration.h>
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#import <netinet/in.h>
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typedef NS_ENUM(NSInteger, BUNetWorkTypeCode) {
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// 初始状态，未连接
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BUNetWorkTypeCode_None = -1,
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// 未知
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BUNetWorkTypeCode_Unknown = 0,
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BUNetWorkTypeCode_Mobile = 1,
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BUNetWorkTypeCode_2G = 2,
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BUNetWorkTypeCode_3G = 3,
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BUNetWorkTypeCode_Wifi = 4,
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BUNetWorkTypeCode_4G = 5,
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BUNetWorkTypeCode_5G = 6,
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};
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typedef NS_ENUM(NSInteger) {
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// 程序无法判断出 App 的网络权限设置
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kBUNetworkAuthorizationStatusCantDetermined = 0,
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// App 未开启蜂窝数据网络权限
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kBUNetworkAuthorizationStatusCellNotPermitted,
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// App 未开启无线局域网与蜂窝移动网络权限，此项仅可能在国行 iPhone 手机上出现
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kBUNetworkAuthorizationStatusWLANAndCellNotPermitted,
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} kBUNetworkAuthorizationStatus;
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extern NSString *kBUReachabilityChangedNotification;
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// 是否开启 “网络状态检测” 的优化，需要外部调用方以 [[NSUserDefaults standardUserDefaults] setBool:forKey:] 方式写入
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extern NSString * const BUReachabilityDetectOptimizeKey;
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@interface BUReachability : NSObject
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/**
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判断指定域名的连通性
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@param hostName 域名
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@return BUReachability对象
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*/
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+ (instancetype)reachabilityWithHostName:(NSString *)hostName;
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/**
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判断指定IP地址的连通性
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@param hostAddress IP地址
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@return BUReachability对象
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*/
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+ (instancetype)reachabilityWithAddress:(const struct sockaddr_in *)hostAddress;
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/**
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判断网络默认连接的连通性（应用连接到指定host主机时除外）
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@return BUReachability对象
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*/
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+ (instancetype)reachabilityForInternetConnection;
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/**
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开始在当前runloop监听连通性通知
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@return 是否成功开始监听
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*/
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- (BOOL)startNotifier;
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/**
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结束监听连通性通知
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*/
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- (void)stopNotifier;
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/**
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当前连通性状态
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@return NetworkStatus枚举值
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*/
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- (BUNetWorkTypeCode)currentReachabilityStatus;
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/**
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是否需要连接。如WWAN需要首先建立一个可用连接才能被激活。WiFi可能需要一个VPN连接等
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@return 是否需要连接
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*/
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- (BOOL)connectionRequired;
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/**
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获取 App 当前的网络权限设置状态
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因苹果尚未提供网络权限判断的 API，此方法目前只是在网络 NotReachable 时检查系统连接状态，
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利用排除法推断出 App 当前没有 蜂窝数据网络权限 或者 WIFI及蜂窝数据网络权限，排除原理参见
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https://wiki.bytedance.net/pages/viewpage.action?pageId=107808003
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在其它情况下（例如网络 Reachable 或者飞行模式）均返回 CantDetermined，上层业务调用方需注意
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@return 参见 kBUNetworkAuthorizationStatus 定义
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*/
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- (kBUNetworkAuthorizationStatus)currentNetworkAuthorizationStatus;
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@end
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@interface BUReachability (Cellular)
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/**
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2G网络是否连通
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@return 是否连通
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*/
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+ (BOOL)is2GConnected;
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/**
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3G网络是否连通
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@return 是否连通
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*/
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+ (BOOL)is3GConnected;
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/**
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4G网络是否连通
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@return 是否连通
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*/
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+ (BOOL)is4GConnected;
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/**
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2017.5.22添加
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借鉴微信方式判断当前网络是否连通
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@return 网络是否可以联调
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*/
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+ (BOOL)isNetworkConnected;
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@end
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