Viewing swagger in Jupyterlab Fetch error Not Found /openapi.json about jupyterlab_iframe HOT 4 CLOSED

This is a CORS issue with your app. Follow: https://fastapi.tiangolo.com/tutorial/cors/

Setting up your app for cors, e.g.:

from jupyterlab_iframe.

Just to be clear, my api is running inside my jupyterlab not outside.
In your case, I believe you run it outside, on your host machine.

from jupyterlab_iframe.

I advanced a bit in my debugging.

I successfully got my swagger by adding a root path uvicorn source.api.main:app --reload --root-path "/jupyter/user/admin/iframes/proxy?path=http://127.0.0.1:8000/"

But now, if I try a route user, it calls:

curl -X 'GET' \
  'http://localhost:8002/jupyter/user/admin/iframes/proxy/user' \
  -H 'accept: application/json'

(http://localhost:8002 being my jupyterlab)

Instead of calling http://localhost:8002/jupyter/user/admin/iframes/proxy?path=http://127.0.0.1:8000/user

from jupyterlab_iframe.

@timkpaine to clarrify the bug, it is not a cors issue as you suggested

Running my api inside my jupyterlab.

If I open an IFrame with http://127.0.0.1:8000/docs in network I see /docs being redirected to /iframes/proxy?path=http://127.0.0.1:8000/docs but /openapi.json is not redirected.

If I open an IFrame directly with http://127.0.0.1:8000/openapi.json, I see it being redirected to /iframes/proxy?path=http://127.0.0.1:8000/openapi.json successfully.

Do you have an idea to why it is not caught in the first scenario ?

Thanks

from jupyterlab_iframe.