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Quentin Gliech cee9da0da5

MSC4108: Add a Content-Type header on the PUT response (#17253 )

This is a workaround for some proxy setup, where the ETag header gets
stripped from the response headers unless there is a Content-Type header
set.

In particular, we saw this bug when putting Cloudflare in front of
Synapse.
I'm pretty sure this is a Cloudflare bug, as this behaviour isn't
documented anywhere, and doesn't make sense whatsoever.

---------

Co-authored-by: Andrew Morgan <1342360+anoadragon453@users.noreply.github.com>

2024-11-26 19:43:26 +01:00

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[MSC4108](https://github.com/matrix-org/matrix-spec-proposals/pull/4108): Add a `Content-Type` header on the `PUT` response to work around a faulty behavior in some caching reverse proxies.