异步回调中调用主进程？

$task = new AsyncTcpConnection('Text://127.0.0.1:8281');
        $task->connect();
        $task_data      =   array(
            'function'=>'login',
            'args'=>$args,
         );
        $task -> send(json_encode($task_data));
        $task -> onMessage = function ($task , $task_result) use($client_id)
         {
            $send_result=json_decode($task_result,true);
            $new_message=$send_result;
            if(!empty($new_message))
            {
               **我想在这里使用bindUid和sendToUid，但是没用。**
            }
            echo  json_encode($send_result);
            $task -> close();

        };