iOS - Connection checker with Reachability class is failed. (reachabilityWithHostName:)

Question

I wrote a connection checker using Apple's Reachability class' reachabilityWithHostName: method. Here is my code.

-(BOOL)checkConnection{
Reachability *reachability = [Reachability reachabilityWithHostName:@"www.example.com"];
NetworkStatus remoteHostStatus = [reachability currentReachabilityStatus];
if (remoteHostStatus != NotReachable) {
    return YES;
}
else {return NO;}
}

SO here is the use cases:

• if I have wifi connection** : returns YES as expected.
• If I have cellular connection : returns YES as expected.
• If cellular and Wifi is disabled : returns NO as expected.
• If I have WiFi connection; but the DSL cable is unplugged (so the host shouldn't be reachable, internet connection is not available.) : returns YES and it's unexpected.
• Also if cellular is enabled but at my current position I have no signal : returns YES and it's unexpected.

How can I solve these unexpected results? Thank you.

Answer 1

With @Martin Koles' help I added a html file into the server. It only has a random value inside. Now I check reachability. If server is reachable, I am trying to get the value from html file. Than, if I could get the value returning YES. If I couldn't (the serverValue should be nil) returning NO..

-(BOOL)checkConnection{
Reachability *reachability = [Reachability reachabilityWithHostName:@"www.izmirmobil.com"];
NetworkStatus remoteHostStatus = [reachability currentReachabilityStatus];
if (remoteHostStatus != NotReachable) {
    NSURL *url = [NSURL URLWithString:@"http://www.example.com/getAValue.html"];
    NSError *errr = nil;
    NSStringEncoding enc;
    NSString *serverValue = [[NSString alloc] initWithContentsOfURL:url usedEncoding:&enc error:&errr];
    if(serverValue)return YES;
    else return NO;

}
else {return NO;}
}