var err error
listener, err = net.ListenTCP("tcp", &net.TCPAddr{Port: port})
if err != nil {
panic(fmt.Sprintf("Could not listen on tcp port %v", port))
}
var err error
listener, err = net.ListenTCP("tcp", &net.TCPAddr{Port: port})
if err != nil {
panic(fmt.Sprintf("Could not listen on tcp port %v", port))
}