Question

我用DatagramSocket编写了一个测试程序来接收数据。但收到5或6包后，这是不会收到更多的数据包！

有人有解决方案吗？

我的测试代码是：

public MainPage()
{
    this.InitializeComponent();
}

private void Page_Loaded(object sender, RoutedEventArgs e)
        {

            Listen();
        }
private async void Listen()
    {
        try
        {
            Windows.Networking.Sockets.DatagramSocket socket = new Windows.Networking.Sockets.DatagramSocket();

            socket.MessageReceived += Socket_MessageReceived;

            //You can use any port that is not currently in use already on the machine.
            string serverPort = "1337";

            //Bind the socket to the serverPort so that we can start listening for UDP messages from the UDP echo client.
            await socket.BindServiceNameAsync(serverPort);
        }
        catch (Exception e)
        {
            //Handle exception.
        }
    }

    public async void Socket_MessageReceived(Windows.Networking.Sockets.DatagramSocket sender, Windows.Networking.Sockets.DatagramSocketMessageReceivedEventArgs args)
    {
        //Read the message that was received from the UDP echo client.
        Stream streamIn = args.GetDataStream().AsStreamForRead();
        StreamReader reader = new StreamReader(streamIn);

        string message = await reader.ReadLineAsync();


        await Windows.ApplicationModel.Core.CoreApplication.MainView.CoreWindow.Dispatcher.RunAsync(CoreDispatcherPriority.Normal,
            () =>
            {
                Alpha.Text = message;


            }
            );
        }

我已经通过wireshark跟踪检查我是否正在接收数据，但是在我的visual studio解决方案中它无法正常工作。

Answer 1

我使用了Control.InboundBufferSizeInBytes，然后它可以正常工作！

        listener = new DatagramSocket();
        listener.MessageReceived += MessageReceived;
        listener.Control.InboundBufferSizeInBytes = 1;

        await listener.BindServiceNameAsync("1337");

Answer 2

这是因为它恰好是您打开UDP侦听器的另一个实例，或者您在错误的位置初始化！

DatagramSocket套接字停止接收数据包

2 个答案: