Racum

- (void)go {
    NSMutableURLRequest *request = [[NSMutableURLRequest alloc] init];
    [request setURL:[NSURL URLWithString:@"http://httpbin.org/headers"]];
    [request setHTTPShouldHandleCookies:NO];
    [request setHTTPMethod:@"GET"];
    [request setValue:@"Test" forHTTPHeaderField:@"User-Agent"];
    [request setTimeoutInterval:10];
    
    NSURLConnection *connection = [[NSURLConnection alloc] initWithRequest:request delegate:self];
    if (connection) {