Getting NSData from a URL works in the simulator but not on a device

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I implement a method that send notes to the server:

-(IBAction)inserttotextfied:(id)sender{

    NSString *strurl=[NSString stringWithFormat:@"http://localhost/get-data/insert.php?Name=%@&message=%@",txtf.text,txt2.text];
    NSData *dataurl=[NSData dataWithContentsOfURL:[NSURL URLWithString:strurl]];
    NSString *stresult=[[[NSString alloc]initWithData:dataurl encoding:NSUTF8StringEncoding]autorelease];
    NSLog(@"%a",stresult);
}

The problem is when I test it via simulator the is being sent, but when I test it in the device the data did not being saved


You probably don't want to send something to localhost on your device, or do you use a different url on the device build?