onMessage的部分需要改一改，我這里實(shí)測沒有問題

public function onMessage($connection, $request)
    {
        $files = $request->file();
        $files = is_array($files) ? array_filter($files) : $files;

        $server = $_SERVER;
        $server['REQUEST_URI'] = $request->uri();
        $server['DOCUMENT_URI'] = $request->path();
        $server['SCRIPT_NAME'] = $request->path();
        $server['QUERY_STRING'] = $request->queryString();
        $server['REQUEST_METHOD'] = $request->method();
        $server['REMOTE_ADDR'] = $connection->getRemoteIp();

        $headers = $request->header();
        foreach ($headers as $k => $v) {
            $server['HTTP_' . str_replace('-', '_', strtoupper($k))] = $v;
        }

        ob_start();//啟用緩存區(qū)

        //加載laravel請求核心模塊
        $kernel = app()->make(\Illuminate\Contracts\Http\Kernel::class);
        $laravelResponse = $kernel->handle(
            $laravelRequest = \Illuminate\Http\Request::createFromBase(new Request(
                $request->get(),
                $request->post(),
                [],
                $request->cookie(),
                $files,
                $server,
                $request->rawBody()
            ))
        );
        $laravelResponse->send();
        $kernel->terminate($laravelRequest, $laravelResponse);

        $res = ob_get_contents();//獲取緩存區(qū)的內(nèi)容
        ob_end_clean();//清除緩存區(qū)

        //輸出緩存區(qū)域的內(nèi)容
        $connection->send($res);
    }