Any chance to support google colab VM to creat a Reverse proxy?

We can run below python code in google colab web console for expose web service:

from google.colab.output import eval_js
print(eval_js("google.colab.kernel.proxyPort(8000)"))

That means we will listen port 8000.

colab will output URL like：
https://aw6wrk463qm-496ff2e9c6d22116-8000-colab.googleusercontent.com/

But google colab explain it cannot support websocket, so we cannot support web Reverse proxy too.
I downloaded chisel and run it in colab web console to listen port 8000 because colab support ! prefix to run all linux command.
And then I run chisel in local linux as client, but seems like it cannot communicate with chisel server through
"aw6wrk463qm-496ff2e9c6d22116-8000-colab.googleusercontent.com:443".

Is there any chance to support google colab VM to creat a Reverse proxy?

Start by reproducing the Google Colab setup with google.colab.output.eval_js and the chisel server and client commands described in the issue. Investigate whether the generated colab.googleusercontent.com endpoint can communicate with chisel over port 443 and support the requested reverse-proxy behavior. Done would require a documented, working Colab-compatible approach or a clear explanation of the blocking limitation.