WebSockets (Socket.io) Tutorial

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#1 What Are WebSockets?

Understand what WebSockets are, how they differ from HTTP, and why they are essential for real-time web applications.

#2 Creating an Express App

Set up a Node.js project with Express and serve an HTML page — the foundation for adding Socket.io in the next episode.

#3 Using Socket.io

Integrate Socket.io with your Express app — set up the server, connect the client, and establish your first real-time connection.

#4 Emitting Messages

Learn how to emit custom events with data between the server and client — the core of real-time Socket.io communication.

#5 Broadcasting Messages

Learn how to broadcast messages to all connected clients, to everyone except the sender, and to specific rooms using Socket.io.