index.js

const PORT = process.env.socketPort || 8080

const path = require('path').resolve()
const express = require('express')
const socketio = require('socket.io')
const { createServer } = require('http')

const app = express()
const server = createServer(app)
const socket = socketio(server)

app.use('/web/', express.static(path + '/web'))
app.get('/', (_req, res) => res.redirect('/web'))

let prov = 'data:image/jpeg;base64,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socket.on('connection', (session) => {
  socket.emit('v', prov)
  session.on('v', (v, s) => {
    prov = v
    socket.emit('v', v, s)
  })
})

server.listen(PORT, () => console.log('Server is now on http://localhost:' + PORT))