Composer, express and Socket IO

This is an essential example to build docker with Composer, express and Socket IO

import cors from 'cors'
import { urlencoded, json } from 'body-parser'
import dotenv from 'dotenv'
dotenv.load()
var app = require('express')();
var http = require('http').createServer(app);
var io = require('socket.io')(http);
app.use(urlencoded({ extended: true, limit: '500mb' }))
app.use(json({ extended: true, limit: '500mb' }))
app.use(cors())
http.listen(process.env.PORT)
app.get('/', (_, res) => {
    res.send('Diego Cao: Hello')
})
io.on('connection', (socket) => {
    var uid = ""
    console.log('user connected')
    socket.on('disconnect', () => {
        console.log('user disconnected')
    })
    socket.on("user_join", (data) => {
        uid = data
        console.log('uid: ' + uid)
        socket.broadcast.emit("user_join", data)
    })
    socket.on("chat_message", (data) => {
        data.uid = uid
        console.log('data: ')
        console.log(data)
        socket.emit("chat_message", data)
    })
})

If you see any issue, please do not hesitate to create an issue here or can contact me via email cao.trung.thu@gmail.com or Linkedin

Thanks

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