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authorEric Eastwood <erice@element.io>2022-10-27 13:29:23 -0500
committerGitHub <noreply@github.com>2022-10-27 18:29:23 +0000
commitaa70556699e649f46f51a198fb104eecdc0d311b (patch)
treea1ff5b0f46480e516786d98a59451baa7a5b528a /docs
parentFix tests for change in PostgreSQL 14 behavior change. (#14310) (diff)
downloadsynapse-aa70556699e649f46f51a198fb104eecdc0d311b.tar.xz
Check appservice user interest against the local users instead of all users (`get_users_in_room` mis-use) (#13958)
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@@ -97,6 +97,25 @@ As announced with the release of [Synapse 1.69.0](#deprecation-of-the-generate_s
 Modules relying on it can instead use the `create_login_token` method.
 
 
+## Changes to the events received by application services (interest)
+
+To align with spec (changed in
+[MSC3905](https://github.com/matrix-org/matrix-spec-proposals/pull/3905)), Synapse now
+only considers local users to be interesting. In other words, the `users` namespace
+regex is only be applied against local users of the homeserver.
+
+Please note, this probably doesn't affect the expected behavior of your application
+service, since an interesting local user in a room still means all messages in the room
+(from local or remote users) will still be considered interesting. And matching a room
+with the `rooms` or `aliases` namespace regex will still consider all events sent in the
+room to be interesting to the application service.
+
+If one of your application service's `users` regex was intending to match a remote user,
+this will no longer match as you expect. The behavioral mismatch between matching all
+local users and some remote users is why the spec was changed/clarified and this
+caveat is no longer supported.
+
+
 # Upgrading to v1.69.0
 
 ## Changes to the receipts replication streams