How to Use WebSockets in Node.js: A Comprehensive Guide In this post, I will guide you on how to use WebSockets in Node.js to create a real-time chat application. What Are WebSockets? A WebSocket is a communication protocol that provides full-duplex communication channels over a single TCP connection. It is designed to enable interactive communication between a client (such as a web browser) and a server, allowing both parties to send and receive data simultaneously. Unlike HTTP, which is a request-response protocol, WebSocket allows for persistent connections where the server can send data to the client without the client explicitly requesting it each time. Key Features and Characteristics of WebSocket Full-Duplex Communication: Both the client and server can send and receive messages independently and simultaneously. This makes it suitable for real-time applications like chat apps, live updates, and multiplayer games. Persist