websocket and cloudmqtt, code example not working - websocket

Question

is it possible to work with websockets and cloudmqtt?
I have following code but nothing is working.
First I use the mqttw31.js from Paho and in my host file I define all the connection details.
src="js/mqttws31.js" type="text/javascript">
src="js/host.js" type="text/javascript">
var mqtt;
var reconnectTimeout = 2000;
function MQTTconnect() {
mqtt = new Paho.MQTT.Client(
host,
port,
"web_" + parseInt(Math.random() * 100,
10));
var options = {
timeout: 3,
useSSL: useTLS,
cleanSession: cleansession,
onSuccess: onConnect,
onFailure: function (message) {
$('#status').val("Connection failed: " + message.errorMessage + "Retrying");
setTimeout(MQTTconnect, reconnectTimeout);
}
};
mqtt.onConnectionLost = onConnectionLost;
mqtt.onMessageArrived = onMessageArrived;
if (username != null) {
options.userName = username;
options.password = password;
}
console.log("Host="+ host + ", port=" + port + " TLS = " + useTLS + " username=" + username + " password=" + password);
mqtt.connect(options);
}
function onConnect() {
$('#status').val('Connected to ' + host + ':' + port);
// Connection succeeded; subscribe to our topic
mqtt.subscribe(topic, {qos: 0});
$('#topic').val(topic);
mqtt.publish("/arduino/commando/", "test Intel");
}
function onConnectionLost(response) {
setTimeout(MQTTconnect, reconnectTimeout);
$('#status').val("connection lost: " + responseObject.errorMessage + ". Reconnecting");
};
function onMessageArrived(message) {
var topic = message.destinationName;
var payload = message.payloadString;
$('#ws').prepend('<li>' + topic + ' = ' + payload + '</li>');
};
$(document).ready(function() {
MQTTconnect();
});
<header>
<h2>MQTT Test</h2>
</header>
<div>
Subscribed to <input type='text' id='topic' disabled />
Status: <input type='text' id='status' size="80" disabled />
<ul id='ws' style="font-family: 'Courier New', Courier, monospace;"></ul>
</div>
In the host file:
host = 'm20.cloudmqtt.com'; // hostname or IP address
port = 13365;
topic = '/arduino/status/'; // topic to subscribe to
useTLS = false;
username = "test";
password = "test";
cleansession = true;

Answer 1

Use port 33365 and set useTLS to true.

Answer 2

A quick look at the cloudmqtt.com doc doesn't mention websockets anywhere.
Assuming they are running Mosquitto 1.4, this does not use the same port for native MQTT and MQTT over websockets so if they are only providing you with 1 port number then it really isn't going to work.