Re-introduce federation /download endpoint

element-hq / synapse

Synapse: Matrix homeserver written in Python/Twisted.

https://element-hq.github.io/synapse

GNU Affero General Public License v3.0

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Re-introduce federation /download endpoint #17350

Closed H-Shay closed 3 months ago

H-Shay commented 3 months ago

This PR re-introduces the federation /download endpoint outlined in MSC3916 - the original PR for this was reverted in https://github.com/element-hq/synapse/pull/17325 due to an incompatibility with 3rd party storage providers.

This PR implements the multipart/mixed response by wrapping and transforming the file stream from the storage provider, thus eliminating the incompatibility.