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Ensure we mark sent knocks as outliers #10873

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1 change: 1 addition & 0 deletions changelog.d/10873.bugfix
Original file line number Diff line number Diff line change
@@ -0,0 +1 @@
Fix a bug introduced in Synapse 1.37.0 which caused `knock` events which we sent to remote servers to be incorrectly stored in the local database.
7 changes: 7 additions & 0 deletions synapse/handlers/federation.py
Original file line number Diff line number Diff line change
Expand Up @@ -593,6 +593,13 @@ async def do_knock(
target_hosts, room_id, knockee, Membership.KNOCK, content, params=params
)

# Mark the knock as an outlier as we don't yet have the state at this point in
# the DAG.
event.internal_metadata.outlier = True

# ... but tell /sync to send it to clients anyway.
event.internal_metadata.out_of_band_membership = True

# Record the room ID and its version so that we have a record of the room
await self._maybe_store_room_on_outlier_membership(
room_id=event.room_id, room_version=event_format_version
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