Correctly handle receiving 'missing' Pdus from federation, rather than just discarding them.

1 files changed, 5 insertions, 7 deletions

diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 5187bcb5bb..001c6c110c 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -100,17 +100,11 @@ class FederationHandler(BaseHandler):
                 is_new_state = yield self.state_handler.handle_new_state(
                     pdu
                 )
-                if not is_new_state:
-                    return
             else:
                 is_new_state = False
         # TODO: Implement something in federation that allows us to
         # respond to PDU.
 
-        if hasattr(event, "state_key") and not is_new_state:
-            logger.debug("Ignoring old state: %s", event.event_id)
-            return
-
         target_is_mine = False
         if hasattr(event, "target_host"):
             target_is_mine = event.target_host == self.hs.hostname
@@ -141,7 +135,11 @@ class FederationHandler(BaseHandler):
 
         else:
             with (yield self.room_lock.lock(event.room_id)):
-                yield self.store.persist_event(event, backfilled)
+                yield self.store.persist_event(
+                    event,
+                    backfilled,
+                    is_new_state=is_new_state
+                )
 
             room = yield self.store.get_room(event.room_id)