I need to check connectivity with IP address only. I'm trying to do it with Apple Reachability class, using reachabilityWithAddress option. And my problem is I can put any IP address in callAddress.sin_addr.s_addr field and statusText always will be "reachble". How can I do to exactly check connectivity to IP address?
-(BOOL)reachabilityTest {
struct sockaddr_in callAddress;
callAddress.sin_len = sizeof(callAddress);
callAddress.sin_family = AF_INET;
callAddress.sin_port = htons(24);
callAddress.sin_addr.s_addr = inet_addr("212.83.3.190");
Reachability *hostReach = [[Reachability reachabilityWithAddress:&callAddress] retain];
NetworkStatus netStatus = [hostReach currentReachabilityStatus];
if (netStatus == NotReachable)
{
NSLog(@"NotReachable");
statusField.text = @"NOT reachable";
return NO;
}
if (netStatus == ReachableViaWiFi)
{
NSLog(@"ReachableViaWiFi");
statusField.text = @"reachable";
return YES;
}
[Reachability release];
}
Instead of using the Reachability classes, go old-school and open a TCP connection to it. If the response to connect() is EHOSTUNREACH, then you can't. If the response is ECONNREFUSED, or a successful connection, then you can.