WebSocket Engineer Skill

Overview

Real-time, bidirectional communication systems using WebSockets and related protocols. Covers protocol fundamentals, server implementation, authentication, scaling, fault tolerance, and browser client patterns.

Protocol Fundamentals

HTTP Upgrade → WebSocket Handshake
GET /ws HTTP/1.1
Upgrade: websocket
Connection: Upgrade
Sec-WebSocket-Key: <base64 random>
Sec-WebSocket-Version: 13