tcpclient.addResponseListener(tramp_mpc_recv);
mpc = new Mpc(mpc_sender, update_ui);
console.log('connected to ' + host + ':' + port);
tcpclient.addResponseListener(tramp_mpc_recv);
mpc = new Mpc(mpc_sender, update_ui);
console.log('connected to ' + host + ':' + port);