How to add custom headers when using app.mount (Specifically, cache-control headers)

[pushshift]

I am using app.mount similar to the following example:

app.mount("/app", StaticFiles(directory="html", html="index.html"), name="static")

How would I go about adding custom response headers when mounting static files in this fashion? Specifically, I would like to add cache-control response headers for this mount.

Thank you.

[dmig-alarstudios]

Look inside the StaticFiles and probably override it.
BTW it's a BAD idea to serve static using framework! Configure your nginx.

[tiangolo]

Thanks for the help here @dmig-alarstudios ! 👏 🙇

If that solves the original problem, then you can close this issue @pushshift ✔️

[github-actions[bot]]

Assuming the original issue was solved, it will be automatically closed now. But feel free to add more comments or create new issues.

[srjchauhan]

I have the same question, if i really want to server static file from app.mount and just change response header how can i do it

[areski]

Same here, I would like to use cache-control headers with StaticFiles, any ideas?

[evan-rash]

Same, did anyone figure out how to do this?

[hasansezertasan]

from starlette.responses import Response
from starlette.types import Scope

from starlette.staticfiles import StaticFiles

class CacheControlledStaticFiles(StaticFiles):
    async def get_response(self, path: str, scope: Scope) -> Response:
        response = await super().get_response(path, scope)
        response.headers["Cache-Control"] = "public, max-age=31536000"
        return response

This should work.

[IamMusavaRibica]

If you want to set cache control to only images for example, add this:

        if path.endswith('.png') or path.endswith('.jpg'):
            response.headers["Cache-Control"] = "public, max-age=31536000"