FastAPI + uvicorn: how to catch exception in websocket handshake process?

Question

Python

Good afternoon.
I can't find an option to catch an exception with a websocket handshake.
Project with API implementation on FastAPI, works with programmatically launched uvicorn ( uvicorn.run() )
Trouble gets out when client connects with incorrect cookie - not ascii characters in cookie body.
The server issues an exception to the console and stops serving requests for a while.

I would like to catch this exception, log the client's ip and continue working, but I can't find a way to catch the error.
It is uvicorn that throws the exception, it hasn't even reached fastapi yet...

Answer 1

Since I don’t know uvicorn to the right extent, the only thing I can advise is to look for the import'a websockets/server.py fragment in the initialization of the uvicorn server. and forward changes to the process_request method of the class, which is described in websockets_impl.py. Well, or modify the code or not through inheritance, then this is of course a crutch (=.