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A comment on You might not need WebSockets. Parent comment

Re:You might not need WebSockets by bobmcnamara on Friday April 11, 2025 @10:04PM (#43660673)
I fixed a few bugs in a WebSocket client and was blown away by the things they do to trick old proxies into not screwing it all up.
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Re:You might not need WebSockets by fenesiistvan on Saturday April 12, 2025 @12:39PM (#43665928)
I would be interested in those tricks
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Re:You might not need WebSockets by bobmcnamara on Saturday April 12, 2025 @04:40PM (#43667779)
A big one is 'masking' all client requests that a proxy can't effectively cache the response since the request always changes.

The RFC explains it: https://datatracker.ietf.org/doc/html/rfc6455#section-5.3

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