WebSockets - MDN Web Docs Glossary: Definitions of Web-related terms 编辑

WebSocket is a protocol that allows for a persistent TCP connection between server and client so they can exchange data at any time.

Any client or server application can use WebSocket, but principally web browsers and web servers. Through WebSocket, servers can pass data to a client without prior client request, allowing for dynamic content updates.

Learn more

General knowledge

• Websocket on Wikipedia

Technical reference

• WebSocket reference on MDN

Learn about it

• Writing WebSocket client applications
• Writing WebSocket servers