First working p2p videochat.

I've integrated a simple react express backend with a Peerjs server.
It can be published under a simple "ngrok.io" tunnel for testing on
internet.

games-party/server.js

@@ -0,0 +1,41 @@
+const express = require('express')
+const app = express()
+const server = require('http').Server(app)
+const io = require('socket.io')(server)
+const { v4: uuidV4 } = require('uuid')
+const { ExpressPeerServer } = require('peer');
+
+app.enable('trust proxy');
+app.set('view engine', 'ejs')
+app.use(express.static('public'))
+
+app.get('/', (request, response) => {
+    // create a room
+    // redirect to a room
+    response.redirect(`/r/${uuidV4()}`)
+})
+
+app.get('/r/:room', (request, response) => {
+    response.render('room', { roomId: request.params.room })
+})
+
+io.on('connection', socket => {
+    socket.on('join-room', (roomId, userId) => {
+        socket.join(roomId)
+        socket.to(roomId).broadcast.emit('user-connected', userId)
+
+        socket.on('disconnect', () => {
+            socket.to(roomId).broadcast.emit('user-disconnected', userId)
+        })
+    })
+})
+
+// Connection broker
+const peerServer = ExpressPeerServer(server, {
+    debug: true,
+    path: '/domingo'
+})
+
+app.use('/peerjs', peerServer)
+
+server.listen(3000, '0.0.0.0')