Handle if get_missing_pdu returns 400 or not all events.

1 files changed, 4 insertions, 2 deletions

diff --git a/synapse/federation/federation_server.py b/synapse/federation/federation_server.py

index 4264d857be..dd4ca74ba6 100644
--- a/synapse/federation/federation_server.py
+++ b/synapse/federation/federation_server.py
@@ -413,12 +413,14 @@ class FederationServer(FederationBase):
                     missing_events = yield self.get_missing_events(
                         origin,
                         pdu.room_id,
-                        earliest_events=list(latest),
-                        latest_events=[pdu.event_id],
+                        earliest_events_ids=list(latest),
+                        latest_events=[pdu],
                         limit=10,
                         min_depth=min_depth,
                     )
 
+                    missing_events.sort(key=lambda x: x.depth)
+
                     for e in missing_events:
                         yield self._handle_new_pdu(
                             origin,