- (BOOL) setupConnection: (DNSSDService*) service
{
    NSString *host = [service resolvedHost];
    NSUInteger port = [service resolvedPort];
    NSLog(@"in setupConnection: host %@ port %u",
          host, port);

    self.sock = [[GCDAsyncUdpSocket alloc]initWithDelegate:self
                delegateQueue:dispatch_get_main_queue() ];
    NSError *err = nil;
    if (![self.sock connectToHost:host onPort:port error:&err]) {
        NSLog(@"we goofed: %@", err);
        return NO;
    }
    return YES;
}

Error Domain=GCDAsyncUdpSocketErrorDomain Code=4 "Socket closed" UserInfo=0x2630c0 {NSLocalizedDescription=Socket closed}