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Check Network Connection with SCNetworkCheckReachabilityByName

/ Published in: Objective C
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  1. #import "AppController.h"
  2. #import <CoreFoundation/CoreFoundation.h>
  3. #import <SystemConfiguration/SCNetworkReachability.h>
  4.  
  5. @implementation AppController
  6.  
  7. - (IBAction)checkConnection:(id)sender
  8. {
  9. 	NSAlert *alert = [[[NSAlert alloc] init] autorelease];
  10. 	[alert setAlertStyle:NSInformationalAlertStyle];
  11. 	[alert addButtonWithTitle:@"Ok"];
  12. 	[alert setInformativeText:@"Connection Test"];
  13.  
  14. 	const char *hostname = "google.com";
  15. 	SCNetworkConnectionFlags flags;
  16. 	if(SCNetworkCheckReachabilityByName(hostname, &flags))
  17. 	{
  18. 		if(kSCNetworkFlagsReachable & flags && !(kSCNetworkFlagsConnectionRequired & flags))
  19. 		{
  20. 			[alert setMessageText:@"You are connected!"];
  21. 			[alert runModal];
  22. 			return;
  23. 		}
  24. 	}
  25. 	[alert setMessageText:@"You are not connected!"];
  26. 	[alert runModal];
  27. }
  28. @end

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