Overriding request & response headers

[naquad]

I have a pretty strange case: a piece of hardware is sending an invalid Sec-WebSocket-Key header. It is 18 bytes instead of 16. There is no chance that the vendor will fix it but I still need this connection.

My idea was to swap the original header with some default and then generate the accept key in the middleware or on_response_prepare signal, but it looks like I can't modify the incoming headers in either of them.

How do I override the headers?

Thank you.

EDIT: I've found a way with middleware + on_response_prepare: in the middleware I'm cloning the request and replacing the headers. I'm not sure if that's safe enough though.

[Dreamsorcerer]

Yep, looking at the API, I'd say cloning the request is the intended approach for this. Roughly along the lines of request = request.clone(headers=...) in a middleware.