var WebSocket = require('ws');
var ws = new WebSocket('ws://192.168.0.49:8080');
ws.on('open', function() {
    console.log('connected');
    var data = {code: "Message", payload: {
        id: "ae31209",
        from: "e2e23f34",
        to: "a439e123",
        text: "A message",
        time_stamp: "blablabla"
            }};
    ws.send(JSON.stringify(data));
    //ws.send(Date.now().toString(), {mask: true});
});
ws.on('close', function() {
    console.log('disconnected');
});
ws.on('message', function(data, flags) {
    console.log('Roundtrip time: ' + (Date.now() - parseInt(data)) + 'ms', flags);
    setTimeout(function() {
        ws.send(Date.now().toString(), {mask: true});
    }, 500);
});