Difference Between internetStatus and hostStatus - ios

Question

i want to check internet connection in my App. While doing that, i use following code.
What is the difference between internetStatus and host status. Which should i use to check whether ipad has internet connection or not.
-(void) checkNetworkStatus:(NSNotification *)notice
{
// called after network status changes
NetworkStatus internetStatus = [internetReachable currentReachabilityStatus];
switch (internetStatus)
{
case NotReachable:
{
//NSLog(#"The internet is down.");
//self.internetActive = NO;
//NSLog(#"A gateway to the host server is down.");
//self.hostActive = NO;
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Connection Failed"
message:#"No internet connection"
delegate:nil
cancelButtonTitle:#"Exit"
otherButtonTitles:nil];
[alert setDelegate:self];
[alert show];
[alert release];
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;
UIAlertView *alert = [[UIAlertView alloc] initWithTitle:#"Connection Failed"
message:#"No internet connection"
delegate:nil
cancelButtonTitle:#"Exit"
otherButtonTitles:nil];
[alert setDelegate:self];
[alert show];
[alert release];
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;
}
}
}

Answer 1

internetStatus or hostStatus just the instance name you can use any name for status. but specifically if you don't set the host then you can use internetStatus for internet access if it is reachable or not, by default apple checks for internet availability to the internet gateway or internet connection, in this case we don't know the hostname for checking the internet connectivity , however you can use hostStatus or any instance name for a particular host, you could set the random host yourself e.g www.google.com and check if it is reachable. procedure is similar.
basically status is depending on your hostname which can be default or you can set it yourself like this;
hostReachable = [Reachability reachabilityWithHostName: #"www.google.com"];
[hostReachable startNotifier];