Strip "join_authorised_via_users_server" from join events which do not need it. (#10933)

This fixes a "Event not signed by authorising server" error when
transition room member from join -> join, e.g. when updating a
display name or avatar URL for restricted rooms.

1 files changed, 3 insertions, 0 deletions

diff --git a/synapse/api/constants.py b/synapse/api/constants.py

index 39fd9954d5..a31f037748 100644
--- a/synapse/api/constants.py
+++ b/synapse/api/constants.py
@@ -217,6 +217,9 @@ class EventContentFields:
     # For "marker" events
     MSC2716_MARKER_INSERTION = "org.matrix.msc2716.marker.insertion"
 
+    # The authorising user for joining a restricted room.
+    AUTHORISING_USER = "join_authorised_via_users_server"
+
 
 class RoomTypes:
     """Understood values of the room_type field of m.room.create events."""