[BUG] BAD HANDSHAKE

[barto95100]

I received most of this line in logs:
2023/12/31 13:25:19 websocketproxy: couldn't dial to remote backend url websocket: bad handshake

and I don't know why ....?

do you have idea or tips to show why this log show

[tobychui]

@barto95100 I am guessing you have another reverse proxy sits between Zoraxy and the web server that handle websocket request, in which the reverse proxy override some of the critical headers (usually the Upgrade header, but it might be some other headers). Please ensure that your reverse proxy configuration do not override/remove headers.

If you need further help, please provide a more detailed bug report with reproduction steps and full log output from the backend in which Zoraxy is trying to connects.

[barto95100]

@tobychui Zoraxy is the front and send to back authentik for some domain but not all, I don't know what the backend is this log

How i configure debug in zoraxy log to view what's the backend probleme to have this log handshake ?