diff options
| -rw-r--r-- | synapse/handlers/room_member.py | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/synapse/handlers/room_member.py b/synapse/handlers/room_member.py index 3ba5335af7..ba49075a20 100644 --- a/synapse/handlers/room_member.py +++ b/synapse/handlers/room_member.py @@ -85,6 +85,12 @@ class RoomMemberHandler(BaseHandler): prev_event_ids=prev_event_ids, ) + # Check if this event matches the previous membership event for the user. + duplicate = yield msg_handler.deduplicate_state_event(event, context) + if duplicate is not None: + # Discard the new event since this membership change is a no-op. + return + yield msg_handler.handle_new_client_event( requester, event, |