WebSockets explained
How WebSockets give browsers a two-way, always-open connection to a server: the HTTP upgrade handshake, frames, a working chat example in JavaScript and Python, heartbeats and reconnection, scaling across servers, security, and when server-sent events or polling are simpler.
CodexBash, , 4 min read
HTTP was built for a simple pattern: the browser asks, the server answers, done. That suits loading pages, but not chat, live scores, multiplayer games or collaborative editing, where the server needs to send data the moment something happens. Polling the server every few seconds wastes requests and still feels slow. WebSockets solve this by turning one HTTP request into a persistent, two-way connection, over which either side can send messages at any time with very little overhead. This article explains how they work and how to use them well.
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