Batch up outgoing read-receipts to reduce federation traffic. (#4890)

Rate-limit outgoing read-receipts as per #4730.

1 files changed, 1 insertions, 1 deletions

diff --git a/synapse/handlers/receipts.py b/synapse/handlers/receipts.py

index dd783ae134..274d2946ad 100644
--- a/synapse/handlers/receipts.py
+++ b/synapse/handlers/receipts.py
@@ -118,7 +118,7 @@ class ReceiptsHandler(BaseHandler):
         if not is_new:
             return
 
-        self.federation.send_read_receipt(receipt)
+        yield self.federation.send_read_receipt(receipt)
 
     @defer.inlineCallbacks
     def get_receipts_for_room(self, room_id, to_key):