判断网络是否连接正常

最新推荐文章于 2023-06-19 09:37:37 发布

转载最新推荐文章于 2023-06-19 09:37:37 发布 · 1.3k 阅读

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+(BOOL)connectedToNetwork{
    struct sockaddr_in zeroAddress;
    bzero(&zeroAddress;, sizeof(zeroAddress));
    zeroAddress.sin_len
= sizeof(zeroAddress); 
    zeroAddress.sin_family
= AF_INET;
      
    SCNetworkReachabilityRef
defaultRouteReachability = SCNetworkReachabilityCreateWithAddress(NULL, (struct
sockaddr *)&zeroAddress;);
    SCNetworkReachabilityFlags
flags; 
      
    BOOL
didRetrieveFlags = SCNetworkReachabilityGetFlags(defaultRouteReachability, &flags;);
    CFRelease(defaultRouteReachability);
      
    if
(!didRetrieveFlags) 
    {
        NSLog(@"Error. Could not recover network reachability flags");
        return
NO; 
    }
      
    BOOL
isReachable = flags & kSCNetworkFlagsReachable; 
    BOOL
needsConnection = flags & kSCNetworkFlagsConnectionRequired;
    return
(isReachable && !needsConnection) ? YES
: NO;
}