diff --git a/src/Module/Example/Hello.php b/src/Module/Example/Hello.php
index 6d88958a..b5997ca4 100644
--- a/src/Module/Example/Hello.php
+++ b/src/Module/Example/Hello.php
@@ -5,11 +5,9 @@ namespace Module\Example;
 
 
 use Framework\Console;
-use Framework\ZMBuf;
 use ZM\Annotation\CQ\CQCommand;
 use ZM\Annotation\Http\Controller;
 use ZM\Annotation\Http\RequestMapping;
-use ZM\Annotation\Module\Closed;
 use ZM\Annotation\Swoole\SwooleEventAt;
 use ZM\Connection\CQConnection;
 use ZM\ModBase;
@@ -48,4 +46,12 @@ class Hello extends ModBase
     public function pong(){
         $this->response->end("ping");
     }
+
+    /**
+     * @SwooleEventAt(type="open",rule="connectType:unknown")
+     */
+    public function closeUnknownConn(){
+        Console::info("Unknown connection , I will close it.");
+        $this->connection->close();
+    }
 }
\ No newline at end of file