Question

I need a little help here!!!

If string ‘url’ contains the address to web server, how do i check whether my web server is up or down?
I got some codes to check Internet connectivity. But even if we have internet connectivity how do we know server is up or not? Is there any better way to do that?

Thank You

Answer 1

You could do a request,

NSURLRequest *theRequest=[NSURLRequest requestWithURL:[NSURL URLWithString:url]
                                       cachePolicy:NSURLRequestUseProtocolCachePolicy
                                       timeoutInterval:20.0]; 

NSURLConnection *theConnection=[[NSURLConnection alloc] initWithRequest:theRequest
                                                        delegate:self];

Now if you implement (along with all other delegate methods)

-(void)connectionDidFinishLoading:(NSURLConnection *)connection

-(void)connection:(NSURLConnection *)connection didFailWithError:(NSError *)error

you will get either succes or error.