The WebSocket Handshake Explained
Dissect the HTTP-based handshake process that upgrades a standard HTTP connection to a WebSocket.
Handshake: The Connection Upgrade
Imagine you're calling a friend, but instead of just talking, you first agree on a secret language. The WebSocket handshake is similar!
It's the crucial initial step where your browser (client) and a server agree to switch from a standard HTTP connection to a WebSocket connection.
Beyond HTTP's Limitations
Traditional HTTP is designed for short, one-off requests and responses. Think of loading a webpage – you ask, the server sends, and the connection closes.
- One-way: Client requests, server responds.
- Short-lived: Connection closes after each interaction.
- Overhead: Each new request needs to set up a new connection.
WebSockets need a persistent, two-way street for real-time data.
All lessons in this course
- The WebSocket Handshake Explained
- WebSocket Data Framing and Messages
- Connection Lifecycle and States
- Subprotocols, Extensions, and Compression