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Mark old events as outliers.

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This is to fix the issue where if a remote server sends an event
that references a really "old" event, then the local server will pull
that in and send to all clients.

We decide if an event is old if its depth is less than the minimum depth
of the room.
This commit is contained in:
Erik Johnston 2015-02-16 14:27:40 +00:00
parent 6138584651
commit 91fc5eef1d
1 changed files with 7 additions and 1 deletions
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8
synapse/federation/federation_server.py
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@ -366,7 +366,13 @@ class FederationServer(FederationBase):
pdu.room_id, min_depth
)
if min_depth and pdu.depth > min_depth and max_recursion > 0:
if min_depth and pdu.depth < min_depth:
# This is so that we don't notify the user about this
# message, to work around the fact that some events will
# reference really really old events we really don't want to
# send to the clients.
pdu.internal_metadata.outlier = True
elif min_depth and pdu.depth > min_depth and max_recursion > 0:
for event_id, hashes in pdu.prev_events:
if event_id not in have_seen:
logger.debug(