Test 2

const WebSocket = require('ws');
var ws, interval, response;

function connect () {
        console.log('Connecting...')
        clearInterval(interval);
        ws = new WebSocket('wss://fairlay.com/testing/');
        ws.on('close', function (e) { console.log(e); setTimeout(connect, 5000); });
        ws.on('error', function (e) { console.log(e); setTimeout(connect, 5000); });
        ws.on('open', function () {
            response = false;
            console.log("Ignore next response:")
            interval = setInterval(send_and_wait, 5000);
        });
        ws.on('message', function (data) {
                console.log('PONG!');
                response = true;
        });
}

function send_and_wait () {
    if (!response) console.log('No response from server');
    else console.log('Everything\'s fine')

    response = false;
    console.log('PING?')
    ws.send('PING');

}

connect();