NSURLConnection works on simulator but fails on iphone device

Question

I'm testing iphone application via xCode both simulation and on iphone device. On the simulation, there is no problem, but when running on the iphone device, NSURLConnection fails, connection:didFailWithError: method called.

What can be the reason for this problem?

Answer 1

Find out by inspecting the NSError object that you receive in connection:didFailWithError:. See listing 3 over at the Using NSUrlConnection documentation:

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

    [connection release];
    [receivedData release];

    NSLog(@"Connection failed! Error - %@ %@",
          [error localizedDescription],
          [[error userInfo] objectForKey:NSErrorFailingURLStringKey]);
}

Answer 2

I have the same problem too. I want to download data from FTP service. It goes well when debugging by similator, but the time out error happens by device.

Answer 3

I am having a similar problem too it works perfect on the sim but once it's on the device it times out

Answer 4

When you use the phone it is connecting through the phone's internet connection. When on the simulator it uses your computer's internet connection.

If there is a problem it is probably with the connection on the phone to whatever your connecting to. Maybe what ever your connecting to is blocking your phone? It's probably not a problem with the application if it works on the simulator.