MyReachability.m

// Reachability Objective-C minimal version
// I'm new so memory leaks are possible on this code
// Extracted from:
// http://www.idevapps.com/forum/archive/index.php/t-3329.html
// (look for an imported_kelvin's post)
//

+ (BOOL)networkAvailable{
	SCNetworkReachabilityRef netreach;
	SCNetworkConnectionFlags flags;

	struct sockaddr_in zero;
	memset(&zero, 0, sizeof(zero));
	zero.sin_len = sizeof(zero);
	zero.sin_family = AF_INET;

	netreach = SCNetworkReachabilityCreateWithAddress( kCFAllocatorSystemDefault, (struct sockaddr *) zero ); 
	if (!SCNetworkReachabilityGetFlags( netreach, &flags )) {
		return FALSE;
	}
	CFRelease(netreach);
	
	BOOL reachable = !(flags & (kSCNetworkReachabilityFlagsConnectionRequired | kSCNetworkReachabilityFlagsTransientConnection));
	return reachable;
}