In node.js Socket.io enables real time event based communication. What that means is that we can communicate to the server from the client and in return the server can talk back to the client. Socket.IO uses WebSockets when it can and has fail overs if the browser does not support it.
Step by Step implementation of socket.io using node.js.
Step 1: In first step I am assuming that you have already created the project using express.js and node.js. If you didn’t do that then please read my previous blog and create the project. After that just install socket.io module.
Step 2: Now go to app.js there we will require socket.io and connect socket with our server.
Read more about Socket.IO using node.js and express visit Findnerd.