Sec-WebSocket-Version Header

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About

The HTTP Sec-WebSocket-Version request and response header is used in the WebSocket opening handshake to indicate the WebSocket protocol supported by the client , and the protocol versions supported by the server if it does not support the version specified in the request1.

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References

  1. MDN. “Sec-WebSocket-Version header”. Available at: https://developer.mozilla.org/en-US/docs/Web/HTTP/Reference/Headers/Sec-WebSocket-Version . (Accessed: [2025-05-20 Tue 07:38]). ↩︎

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