Authenticated media requests don't seem to work at all?

[matrixbot]

This issue was originally created by @Lunaphied at matrix-org/dendrite#3420.

Background information

• Dendrite version or git SHA: 0.13.7
• SQLite3 or Postgres?: Postgres
• Running in Docker?: No
• go version: Irrelevant/unknown (using as packaged from Nixpkgs)
• Client used (if applicable): Cinny/Element

Description

• What is the problem: Media requests to servers that only support authenticated media requests (like matrix.org itself) always 404
• Who is affected: Everyone using Dendrite
• How is this bug manifesting: Log messages about failed media requests
• When did this first appear: Recently, likely when matrix.org disabled unauthenticated fetch

Steps to reproduce

• Start an encrypted DM with someone from Matrix.org
• Have them send an image
• Observe error

Sep 10 18:08:41 homura dendrite[14339]: time="2024-09-11T00:08:41.576265018Z" level=error msg="r.fetchRemoteFileAndStoreMetadata: failed to fetch remote file" MediaID=redacted Origin=matrix.org error="File with media ID \"redacted\" does not exist on matrix.org" req.id=KiQCE521bkpb req.method=GET req.path=/_matrix/media/v3/download/matrix.org/redacted

all redacteds are the same ID.

[matrixbot]

This comment was originally posted by @viviicat at matrix-org/dendrite#3420 (comment).

Looking at the history, this might be because they have not made a release with that functionality yet? I believe it was added in August in #3397

Tomorrow I'm going to try with a more recent build to see if that resolves it.

[matrixbot]

This comment was originally posted by @viviicat at matrix-org/dendrite#3420 (comment).

Yeah, running from a main build resolved my issue.

[matrixbot]

This comment was originally posted by @S7evinK at matrix-org/dendrite#3420 (comment).

Also keep in mind that you need a client that supports authed media through the unstable feature announced in /versions, as we do not have support for Matrix v1.11 yet.

[matrixbot]

This comment was originally posted by @McSinyx at matrix-org/dendrite#3420 (comment).

What clients would work then?

[matrixbot]

This comment was originally posted by @S7evinK at matrix-org/dendrite#3420 (comment).

AFAIK, FluffyChat and nheko either use the unstable feature, or just try the new endpoints and use them.

[matrixbot]

This comment was originally posted by @Lunaphied at matrix-org/dendrite#3420 (comment).

Looking at the history, this might be because they have not made a release with that functionality yet? I believe it was added in August in #3397

Ah looks like my quick peruse and search of the sources and PRs missed this, thank you! Manually bumping my package to use the latest sources seems to address the issue so the solution for this should be as simple as cutting a new release of dendrite

[matrixbot]

This comment was originally posted by @S7evinK at matrix-org/dendrite#3420 (comment).

#3431 was merged, so hopefully some/all of this was fixed, if not, feel free to re-open.