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distgit: disable mod_mime_magic content encoding for archives #3193

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kevin merged 1 commit from victorkoycheff/ansible:issue-12812-fix-deflate-headers into main 2026-03-04 21:26:01 +00:00
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victorkoycheff commented 2026-03-04 19:36:39 +00:00
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Fixes infra/tickets#12812.

It turns out mod_deflate was innocent. src.fedoraproject.org doesn't have gzip: true enabled in proxies-websites.yml, so the proxy never applied the DEFLATE filter.

The false headers are coming from the backend Apache (pkgs01). mod_mime_magic reads the first bytes of unknown files (like .crate), sees the gzip magic bytes, and automatically attaches Content-Type: application/x-tar and Content-Encoding: x-gzip.

This explicitly forces application/octet-stream and unsets the Content-Encoding header so clients don't double-decompress archives on the fly.

Fixes https://forge.fedoraproject.org/infra/tickets/issues/12812. It turns out `mod_deflate` was innocent. `src.fedoraproject.org` doesn't have `gzip: true` enabled in `proxies-websites.yml`, so the proxy never applied the DEFLATE filter. The false headers are coming from the backend Apache (`pkgs01`). `mod_mime_magic` reads the first bytes of unknown files (like `.crate`), sees the gzip magic bytes, and automatically attaches `Content-Type: application/x-tar` and `Content-Encoding: x-gzip`. This explicitly forces `application/octet-stream` and unsets the `Content-Encoding` header so clients don't double-decompress archives on the fly.
distgit: disable mod_mime_magic content encoding for archives
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9579a35ca5
 
mod_deflate wasn't the issue, as src didn't have gzip enabled. The
backend (pkgs01) uses mod_mime_magic, which sniffs .crate files
and adds false gzip headers. Forcing application/octet-stream
fixes the client double-decompression bug.

Fixes #12812.

Signed-off-by: Victor Koycheff <victorkoycheff@gmail.com>
kevin commented 2026-03-04 21:25:54 +00:00
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Sounds possible. Lets try.

Sounds possible. Lets try.
kevin merged commit b935cd4d86 into main 2026-03-04 21:26:01 +00:00
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