Asynchronous request to the server from background thread

Question

I\'ve got the problem when I tried to do asynchronous requests to server from background thread. I\'ve never got results of those requests. Simple example which shows the pr

Answer 1

You can start the connection on a background thread but you have to ensure the delegate methods are called on main thread. This cannot be done with

[[NSURLConnection alloc] initWithRequest:urlRequest 
                                delegate:self];

since it starts immediately.

Do this to configure the delegate queue and it works even on secondary threads:

NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:urlRequest 
                                                              delegate:self 
                                                      startImmediately:NO];
[connection setDelegateQueue:[NSOperationQueue mainQueue]];
[connection start];