Add accept_unmasked_frames setting in WebSocketUpgrade #1529
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Motivation
I am working with some legacy websocket clients that do not follow RFC 6455 and is thus sending unmasked frames via websockets. There isn't a way to change these clients, but tungstenite does expose an accept_unmasked_frames config option which can be set by axum.
Solution
I've added accept_unmasked_frames to WebSocketUpgrade to set the underlying config setting and allow unmasked frames
Please let me know if anything needs to change