Хостът за достъпност не е достъпен, без значение кой хост използвам

Този случай (NSLog(@"A gateway to the host server is down."); винаги се изпълнява по някаква причина.

Използвам класа на Apple Reachability зад сцената. Опитах се да вмъкна други хостове, но без успех, моля, помогнете.

Благодаря предварително.

Ето кода

@implementation ConnectionManager
@synthesize internetActive, hostActive;

-(id)init {
self = [super init];
if(self) {

}
[[NSNotificationCenter defaultCenter] addObserver:self selector:@selector(checkNetworkStatus:) name:@"NetworkReachabilityChangedNotification" object:nil];

internetReachable = [Reachability reachabilityForInternetConnection];
[internetReachable startNotifier];

hostReachable = [Reachability reachabilityWithHostName:@"www.google.com"];
[hostReachable startNotifier];



return self;
}

- (void) checkNetworkStatus:(NSNotification *)notice
{
NetworkStatus internetStatus = [internetReachable currentReachabilityStatus];
switch (internetStatus)

{
    case NotReachable:
    {
        NSLog(@"The internet is down.");
        self.internetActive = NO;

        break;

    }
    case ReachableViaWiFi:
    {
        NSLog(@"The internet is working via WIFI.");
        self.internetActive = YES;

        break;

    }
    case ReachableViaWWAN:
    {
        NSLog(@"The internet is working via WWAN.");
        self.internetActive = YES;

        break;

    }
}

NetworkStatus hostStatus = [hostReachable currentReachabilityStatus];
switch (hostStatus)

{
    case NotReachable:
    {
        NSLog(@"A gateway to the host server is down.");
        self.hostActive = NO;

        break;

    }
    case ReachableViaWiFi:
    {
        NSLog(@"A gateway to the host server is working via WIFI.");
        self.hostActive = YES;

        break;

    }
    case ReachableViaWWAN:
    {
        NSLog(@"A gateway to the host server is working via WWAN.");
        self.hostActive = YES;

        break;

    }
}

}