HTTP Upgrade is a mechanism that allows clients to switch to a different protocol on the same connection, facilitating the transition from HTTP to protocols like WebSockets. This is achieved through the Upgrade header in the HTTP request, enabling more efficient communication for specific use cases without initiating a new connection.

HTTP Upgrade

A mechanism is a system of parts working together in a machine or process, often used to explain how something functions or operates. In scientific and philosophical contexts, it refers to the underlying processes or structures that produce a particular outcome or behavior.

mechanism

different protocol

WebSockets provide a full-duplex communication channel over a single, long-lived connection, enabling real-time data exchange between a client and server with minimal overhead. This technology is essential for applications requiring low latency and high-frequency updates, such as online gaming, live chat, and financial tickers.

WebSockets

Upgrade header

An HTTP request is a message sent by a client to a server in the Hypertext Transfer Protocol, initiating a communication session to request data or perform an action. It consists of a request line, headers, and an optional body, and it is fundamental for web interactions, enabling the fetching of resources and data exchange over the internet.

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