webman中接口异步调用tcp服务端如何获将获取的数据返回？

composer require workerman/workerman v5.0.0-beta.4 revolt/event-loop

class IndexController
{
    public function index(Request $request)
    {
        $con = new AsyncTcpConnection('tcp://127.0.0.1:12345');
        $con->onConnect = function ($con) {
            $con->send('hello');
        };
        $suspension = EventLoop::getSuspension();
        $con->onMessage = function ($con, $data) use ($suspension) {
            $con->close();
            $suspension->resume($data);
        };
        $con->connect();
        return $suspension->suspend();
    }
}