socket.js

#!/usr/bin/env node
import { createConnection, createServer } from 'net';

const PORT = 3000;

const server = createServer(PORT, function () {
  const { port, address } = server.address();
  console.log(`Server is listening at http://${address}:${port}/`);
  
  server.on('connection', function (connection) {
    console.log(`Received new connection at ${connection.remotePort}`);
  })
  
  const interval = setInterval(function () {
    createConnection(server.address());
  }, 5000)
  
  server.on('close', () => clearInterval(interval));
});