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Fix membership changes to be idempotent

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This commit is contained in:
Mark Haines 2016-09-02 19:23:22 +01:00
parent 2aa39db681
commit f2690c6423
1 changed files with 6 additions and 0 deletions
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6
synapse/handlers/room_member.py
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@ -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,