NodeJS not working on https (port 3000)

I'm working with both laravel and nodejs (linking socket.io with redis from backend to frontend). My code on node.js file is:

var app = require('express')();
var server = require('https').Server(app);
var io = require('socket.io')(server);
const redis = require('redis');
const redisClient = redis.createClient();


server.listen(3000);

io.on('connection', function(socket){
    console.log('a user connected');
    });

redisClient.subscribe('business');
console.log("Redis server running");
redisClient.on("message", function(channel, message) {
    console.log(channel);
    console.log(message);
            io.emit(channel, message);
});

also, here is the socket.io connection.

var socket = io('https://domain.com:3000');

I keep getting:

GET http://ift.tt/2mHGXKJ;     t=1488315350710-12 net::ERR_CONNECTION_TIMED_OUT

I had this problem before on my localhost, but I solved it by setting the socket = io('domain:3000') instead of io(); because on 8080/8443 I have laravel, while on 3000 I have node.js running. I'm getting this error while having nodejs running on server (ubuntu). Thanks

via terror