Real-Time Chat with Node.js and WebSocket

Creating a chat server with pure Node.js helps understand how WebSocket works under the hood.

Step-by-Step Implementation

1. **Setup WebSocket Server**

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

server.on('connection', socket => {
  socket.on('message', message => {
    server.clients.forEach(client => {
      if (client.readyState === WebSocket.OPEN) {
        client.send(message);
      }
    });
  });
});

2. **Basic Client**

Conclusion

With just a few lines of code, you can have a lightweight chat backend running.