usx2y_clients_stop
usx2y_clients_stop(usx2y);
usx2y_clients_stop(usx2y);
usx2y_clients_stop(usx2y); // something is completely wrong > stop everything
usx2y_clients_stop(usx2y);
usx2y_clients_stop(usx2y); // something is completely wrong > stop everything