modify

HttpServer/Abstracts/Callback.php

@@ -33,6 +33,8 @@ abstract class Callback extends HttpService
 	protected function clear($server, $worker_id, $message)
 	{
 		try {
+		    fire(Event::SYSTEM_RESOURCE_CLEAN);
+
 			Snowflake::clearProcessId($server->worker_pid);
 			Timer::clearAll();
 

System/Abstracts/Pool.php

@@ -286,6 +286,8 @@ abstract class Pool extends Component
 			unset($client);
 			$this->desc($name);
 		}
+        $this->_items[$name]->close();
+        $this->_items[$name] = null;
 	}