Although S3 offers a GetObjectTorrent API call to generate a torrent
file on their end, it doesn't look like any similar systems with S3
compatible APIs actually support it. Notably, Minio and Wasabi do not.
In order to remain compatible with these, it's better to not rely on the
storage backend to handle creation.
This new backend currently isn't hooked up; new and existing installs
will continue to use the localfs backend.
* Rework torrent generation to be backend-dependent so we can use S3's
existing torrent API.
* Remove the torrent test cases, which broke with this torrent rework;
they will need to be added back later.
* Use `http.MaxBytesReader` for better max size handling.
* Allow backends to return errors in `ServeFile` if needed.
We can use the Host property of the request and the X-Forwarded-Proto to
infer the site URL. To reduce complexity, the path is not inferred, and
it is assumed that linx-server is running at /. If this is not the case,
the site URL must be manually configured; this is no different than it
was before.
mutantmonkey
Andrei Marcu
mutantmonkey