Merge branch 'release-v0.18.5' of github.com:matrix-org/synapse v0.18.5

1 files changed, 7 insertions, 3 deletions

diff --git a/synapse/handlers/receipts.py b/synapse/handlers/receipts.py
index e536a909d0..50aa513935 100644
--- a/synapse/handlers/receipts.py
+++ b/synapse/handlers/receipts.py
@@ -33,8 +33,8 @@ class ReceiptsHandler(BaseHandler):
         self.server_name = hs.config.server_name
         self.store = hs.get_datastore()
         self.hs = hs
-        self.federation = hs.get_replication_layer()
-        self.federation.register_edu_handler(
+        self.federation = hs.get_federation_sender()
+        hs.get_replication_layer().register_edu_handler(
             "m.receipt", self._received_remote_receipt
         )
         self.clock = self.hs.get_clock()
@@ -100,7 +100,7 @@ class ReceiptsHandler(BaseHandler):
 
             if not res:
                 # res will be None if this read receipt is 'old'
-                defer.returnValue(False)
+                continue
 
             stream_id, max_persisted_id = res
 
@@ -109,6 +109,10 @@ class ReceiptsHandler(BaseHandler):
             if max_batch_id is None or max_persisted_id > max_batch_id:
                 max_batch_id = max_persisted_id
 
+        if min_batch_id is None:
+            # no new receipts
+            defer.returnValue(False)
+
         affected_room_ids = list(set([r["room_id"] for r in receipts]))
 
         with PreserveLoggingContext():