How to create HTTP Server in Node.Js

ws is a popular WebSockets library for Node.js.

We’ll use it to build a WebSockets server. It can also be used to implement a client, and use WebSockets to communicate between two backend services.

Install it using npm:
npm initnpm install ws

The code you need to write is very little:

const WebSocket = require('ws')
const wss = new WebSocket.Server({ port: 8080 })

wss.on('connection', ws => {
  ws.on('message', message => {
    console.log(`Received message => ${message}`)
  })
  ws.send('ho!')})

This code creates a new server on port 8080 (the default port for WebSockets), and adds a callback function when a connection is established, sending ho! to the client, and logging the messages it receives.