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-rw-r--r--synapse/handlers/federation.py5
1 files changed, 4 insertions, 1 deletions
diff --git a/synapse/handlers/federation.py b/synapse/handlers/federation.py
index 267fedf114..edffa560bf 100644
--- a/synapse/handlers/federation.py
+++ b/synapse/handlers/federation.py
@@ -289,6 +289,9 @@ class FederationHandler(BaseHandler):
     def backfill(self, dest, room_id, limit, extremities=[]):
         """ Trigger a backfill request to `dest` for the given `room_id`
         """
+        if dest == self.server_name:
+            raise SynapseError(400, "Can't backfill from self.")
+
         if not extremities:
             extremities = yield self.store.get_oldest_events_in_room(room_id)
 
@@ -455,7 +458,7 @@ class FederationHandler(BaseHandler):
 
         likely_domains = [
             domain for domain, depth in curr_domains
-            if domain is not self.server_name
+            if domain != self.server_name
         ]
 
         @defer.inlineCallbacks