Simple Socket.io example

client.js

// https://cdnjs.cloudflare.com/ajax/libs/socket.io/1.6.0/socket.io.min.js
var socket = io('http://localhost:5050');
socket.on('news', function (data) {
  console.log(data);
  socket.emit('client event', { my: 'data' });
});

server.js

import express from 'express';
import http from 'http'

/**
 * Express Set Up
 */
const app = express()

app.set('view engine', 'pug')
app.use('/assets', express.static('assets'));

const server = http.createServer(app);
const io = require('socket.io').listen(server);
server.listen(5050);

io.on('connection', function (socket) {
  socket.emit('news', { hello: 'world' });
  socket.on('my other event', function (data) {
    console.log(data);
  });
});