WebSockets

WebSockets is a communication protocol that provides full-duplex, bidirectional communication channels over a single TCP connection, enabling real-time data exchange between a client (e.g., a web browser) and a server. It allows for persistent connections where both parties can send messages at any time without the overhead of HTTP request-response cycles, making it ideal for applications requiring low-latency updates. This protocol is standardized by the IETF as RFC 6455 and is widely supported in modern browsers and server environments.

Also known as: WebSocket, WS, Web Sockets, Socket.IO (common library), RFC 6455

🧊Why learn WebSockets?

Developers should learn and use WebSockets when building applications that require real-time features, such as live chat, online gaming, financial trading platforms, collaborative editing tools, or live sports updates, as it reduces latency and server load compared to polling techniques like HTTP long-polling. It is particularly valuable in scenarios where instant data synchronization between clients and servers is critical, such as in IoT device monitoring or interactive dashboards, because it maintains an open connection for continuous data flow.

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Compare WebSockets

WebSockets vs Http Long Polling→WebSockets vs Server Sent Events→WebSockets vs Graphql Subscriptions→

Learning Resources

MDN Web Docs: WebSockets

WebSocket.org - Introduction and Tutorials

freeCodeCamp: Learn WebSockets in 10 Minutes

RFC 6455: The WebSocket Protocol

Socket.IO Documentation

Related Tools

Http Real Time Communication Tcp Server Sent Events Socket Io

Alternatives to WebSockets

Http Long Polling Server Sent Events Graphql Subscriptions

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