WebSockets

WebSocket is a {{Glossary("protocol")}} that allows for a persistent {{Glossary("TCP")}} connection between {{Glossary("Server", "server")}} and client so they can exchange data at any time.

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

See also

• WebSocket on Wikipedia
• WebSocket reference on MDN
• Writing WebSocket client applications
• Writing WebSocket servers