AFNetworking detect when wifi connection without active internet connection

Question

I'm using AFNetworking and was wondering how to detect a scenario when user is connected to a wifi network without active internet connection.

I reproduce this scenario buy powering a router without connecting the dsl line.

AFNetworking return  AFNetworkReachabilityStatusReachableViaWiFi = 2

my code:

 [[AFNetworkReachabilityManager sharedManager] setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
        NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));
        self.isInternetAvialable = status > 0;
    }];

thanks

I refacotred the code to be like

  AFNetworkReachabilityManager* manager = [AFNetworkReachabilityManager managerForDomain:@"http://www.google.com"];
        [manager setReachabilityStatusChangeBlock:^(AFNetworkReachabilityStatus status) {
            NSLog(@"Reachability: %@", AFStringFromNetworkReachabilityStatus(status));
            self.isInternetAvialable = status > 0;
        }];
        [manager startMonitoring];

now the block never get called!

Answer 1

Rather than using [AFNetworkReachabilityManager sharedManager] which just monitors network connectivity, you can use [AFNetworkReachabilityManager managerForDomain:(NSString *)domain] and pass an appropriate hostname - such as "www.google.com" - this way you can test whether the network you are connected to has Internet access - it can still be fooled by local DNS and a web server, but I would think that it is unlikely someone would do that.

Once you have your AFNetworkReachabilityManager you can set the change block as you do for the shared manager

Answer 2

Use Reachability class and its reachabilityForInternetConnection method.

Reachability *networkReachability = [Reachability reachabilityForInternetConnection];   
NetworkStatus networkStatus = [networkReachability currentReachabilityStatus];    

if (networkStatus == NotReachable) 
{        
    NSLog(@"There is NO Internet connection");        
} 
else 
{        
     NSLog(@"There is Internet connection");        
}