[BUG] Swagger documents cannot be accessed directly through the browser after setting the proxy using root_path

[insistence]

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• I'm @tiangolo or he asked me directly to create an issue here.

Issue Content

Operating System

Windows

FastAPI Version

0.109.1

Pydantic Version

2.5.3

Python Version

3.9.18

Uvicorn Version

0.27.0

from fastapi import FastAPI
import uvicorn


app = FastAPI()


@app.get('/test')
def test():
    return {'test': 'test content'}


if __name__ == '__main__':
    uvicorn.run(app='app:app', root_path='/proxy')

When I run the above code, I am unable to access the Swagger document through http://127.0.0.1:8000/docs or http://127.0.0.1:8000/proxy/docs in my browser(Not Found /proxy/openapi.json).

[chyok]

Hi, this is the expected result. You can check the documentation here, which explains in detail why it is this way.

https://fastapi.tiangolo.com/advanced/behind-a-proxy/#check-the-docs-ui

[insistence]

Hi, this is the expected result. You can check the documentation here, which explains in detail why it is this way.

https://fastapi.tiangolo.com/advanced/behind-a-proxy/#check-the-docs-ui

Ah, I know what you mentioned. The current issue is that using a proxy prefix is also inaccessible.