diff --git a/websocket-gateway/spec/jam_websockets/router_spec.rb b/websocket-gateway/spec/jam_websockets/router_spec.rb
index 10710a2b8..e08106ec4 100644
--- a/websocket-gateway/spec/jam_websockets/router_spec.rb
+++ b/websocket-gateway/spec/jam_websockets/router_spec.rb
@@ -166,6 +166,11 @@ describe Router do
 
           def close()
           end
+
+          def get_peername
+            return "\x00\x02\x93\v\x7F\x00\x00\x01\x00\x00\x00\x00\x00\x00\x00\x00" # 37643, "localhost"
+          end
+
         end
 
         client = TestClient.new