Opened 4 years ago
Closed 4 years ago
#31563 closed Cleanup/optimization (wontfix)
Document edge case with uwsgi, wsgi.file_wrapper and BytesIO.
| Reported by: | Sergei Maertens | Owned by: | nobody |
|---|---|---|---|
| Component: | Documentation | Version: | 3.0 |
| Severity: | Normal | Keywords: | wsgi.file_wrapper, uwsgi, streaming responses |
| Cc: | Triage Stage: | Unreviewed | |
| Has patch: | no | Needs documentation: | no |
| Needs tests: | no | Patch needs improvement: | no |
| Easy pickings: | yes | UI/UX: | no |
Description
The FileResponse documentation mentions both the usage of BytesIO and possible optimizations with wsgi.file_wrapper.
Just today I was hit by https://github.com/unbit/uwsgi/issues/1126, which didn't manifest with runserver, because uwsgi optimizes this using sendfile. However, this is not a combination that works when you're using BytesIO instead of actual file handles, and uwsgi will error.
Of course, this is a very uwsgi-specific thing, and I'm not sure if it happens with gunicorn or other wsgi-servers too, but it might be good to document this where the usage of wsgi.file_wrapper is documented.
Change History (1)
comment:1 by , 4 years ago
| Resolution: | → wontfix |
|---|---|
| Status: | new → closed |
| Summary: | Document edge case with uwsgi, wsgi.file_wrapper and BytesIO → Document edge case with uwsgi, wsgi.file_wrapper and BytesIO. |
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It's too niche IMO. We cannot document all caveats.