WebSockets Explained: How Persistent Connections Enable Real-Time Apps

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WebSockets are a communication protocol that establishes a persistent, two-way channel between a client and a server, eliminating the need for repeated HTTP requests. Unlike traditional HTTP, where the client must poll the server repeatedly to check for updates, WebSockets allow the server to push data to the client instantly. The connection begins with an HTTP-based handshake, after which the protocol upgrades to WebSocket for continuous, bidirectional messaging. This makes WebSockets well-suited for applications such as chat platforms, stock dashboards, multiplayer games, and collaborative editors. The lifecycle of a WebSocket connection moves through distinct states: connecting, open, message exchange, closing, and closed.

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ProgrammingDEV Community ·

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