Srushtika

const http = require('http');
const crypto = require('crypto');
const static = require('node-static');
const file = new static.Server('./');
const server = http.createServer((req, res) => {
  req.addListener('end', () => file.serve(req, res)).resume();
});
server.on('upgrade', function (req, socket) {
  if (req.headers['upgrade'] !== 'websocket') {
    socket.end('HTTP/1.1 400 Bad Request');