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-rw-r--r--synapse/app/frontend_proxy.py12
1 files changed, 7 insertions, 5 deletions
diff --git a/synapse/app/frontend_proxy.py b/synapse/app/frontend_proxy.py
index 1f1f1df78e..e2822ca848 100644
--- a/synapse/app/frontend_proxy.py
+++ b/synapse/app/frontend_proxy.py
@@ -70,12 +70,12 @@ class PresenceStatusStubServlet(RestServlet):
         except HttpResponseException as e:
             raise e.to_synapse_error()
 
-        defer.returnValue((200, result))
+        return (200, result)
 
     @defer.inlineCallbacks
     def on_PUT(self, request, user_id):
         yield self.auth.get_user_by_req(request)
-        defer.returnValue((200, {}))
+        return (200, {})
 
 
 class KeyUploadServlet(RestServlet):
@@ -126,11 +126,11 @@ class KeyUploadServlet(RestServlet):
                 self.main_uri + request.uri.decode("ascii"), body, headers=headers
             )
 
-            defer.returnValue((200, result))
+            return (200, result)
         else:
             # Just interested in counts.
             result = yield self.store.count_e2e_one_time_keys(user_id, device_id)
-            defer.returnValue((200, {"one_time_key_counts": result}))
+            return (200, {"one_time_key_counts": result})
 
 
 class FrontendProxySlavedStore(
@@ -247,7 +247,9 @@ def start(config_options):
     )
 
     ss.setup()
-    reactor.callWhenRunning(_base.start, ss, config.worker_listeners)
+    reactor.addSystemEventTrigger(
+        "before", "startup", _base.start, ss, config.worker_listeners
+    )
 
     _base.start_worker_reactor("synapse-frontend-proxy", config)