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authorDenis Kasak <dkasak@termina.org.uk>2022-02-10 15:43:01 +0000
committerGitHub <noreply@github.com>2022-02-10 15:43:01 +0000
commit337f38cac38bc57bc6a3cc8b319e3079c60c4549 (patch)
tree15d58bea7ff37ac3d515c93984fc49417d670941 /changelog.d/11936.bugfix
parentFix broken link in README to admin API. (#11955) (diff)
downloadsynapse-337f38cac38bc57bc6a3cc8b319e3079c60c4549.tar.xz
Implement a content type allow list for URL previews (#11936)
This implements an allow list for content types for which Synapse will attempt URL preview. If a URL resolves to a resource with a content type which isn't in the list, the download will terminate immediately.

This makes sense given that Synapse would never successfully generate a URL preview for such files in the first place, and helps prevent issues with streaming media servers, such as #8302.

Signed-off-by: Denis Kasak dkasak@termina.org.uk
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+Implement an allow list of content types for which we will attempt to preview a URL. This prevents Synapse from making useless longer-lived connections to streaming media servers.