I noticed that Forgejo does not allow HTTP range requests when downloading artifacts. All other file downloads like releases and packages support them.
So I looked at the code and found that the artifact download endpoint uses a simple io.Copy to serve the file contents instead of using the established `ServeContentByReadSeeker` function which does take range requests into account.
Reviewed-on: https://codeberg.org/forgejo/forgejo/pulls/4218
Reviewed-by: Earl Warren <earl-warren@noreply.codeberg.org>
Reviewed-by: Gusted <gusted@noreply.codeberg.org>
Co-authored-by: ThetaDev <thetadev@magenta.de>
Co-committed-by: ThetaDev <thetadev@magenta.de>
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