gatewayworker tcp 粘包问题请教

 /**
    * 当客户端发来消息时触发
    * @param int $client_id 连接id
    * @param mixed $message 具体消息
    */
    public static function onMessage($client_id, $message)
    {

            global $http;
            global $db;
            $data =strtoupper(bin2hex($message));
            $data_charge_qianzhui =substr($data,0,2);//前缀
            var_dump($data);      

    }