Question

最近我开发了一个运行良好的c＃metro应用程序，现在我想在c＃中开发相同的应用程序。由于这个website库windows.networking.proximity仍在工作，所以我已经做了很少的东西来启用地铁应用程序库，windows.security.cryptography也显然windows.networking.sockets没有工作。我这部分代码的目标只是接收通过wifi从智能手机发送的数据：

namespace OpenItForMeDesktop{
class Server
{
    private StreamSocketListener serverListener;
    public static String port = "3011";
    public static String adressIP = "192.168.173.1";
    private HostName hostName;

    //Initialize the server
    public Server()
    {
        serverListener = new StreamSocketListener();
        hostName = new HostName(adressIP);
        listen();
    }

    //Create the listener which is waiting for connection
    private async void listen()
    {
        serverListener.ConnectionReceived += OnConnection;
        try
        {

            //await serverListener.BindEndpointAsync(hostName, port);
            await serverListener.BindServiceNameAsync(port);
            MainWindow.Current.UpdateLog("Listening for Connection(s)");
        }
        catch (Exception exception)
        {
            MainWindow.Current.UpdateLog("Exception throw in Listen : " + exception);
        }

    }

    //When a connection appears, this function his called
    private async void OnConnection(StreamSocketListener sender, StreamSocketListenerConnectionReceivedEventArgs args)
    {

        MainWindow.Current.UpdateLog("A message has been received...");
        if (MainWindow.Current.loadingPage)
        {
            MainWindow.Current.UpdateLog("wait please");
        }
        else
        {

            DataReader reader = new DataReader(args.Socket.InputStream);
            try
            {
                while (true)
                {

                    reader.InputStreamOptions = InputStreamOptions.Partial;
                    // Read first 4 bytes (length of the subsequent string).
                    uint sizeFieldCount = await reader.LoadAsync(sizeof(uint));
                    if (sizeFieldCount != sizeof(uint))
                    {
                        return;
                    }

                    // Read the string.
                    uint stringLength = reader.ReadUInt32();
                    uint actualStringLength = await reader.LoadAsync(stringLength);
                    if (stringLength != actualStringLength)
                    {
                        return;
                    }
                    String message = reader.ReadString(actualStringLength);
                    MainWindow.Current.receiveMessage(message);
                }
            }
            catch (Exception exception)
            {
                // If this is an unknown status it means that the error is fatal and retry will likely fail.
                if (SocketError.GetStatus(exception.HResult) == SocketErrorStatus.Unknown)
                {
                    throw;
                }

                MainWindow.Current.UpdateLog("Read stream failed with error: " + exception.Message);
            }
        }
    }




}

}

` 当我构建这个代码时，没有抛出任何错误，当我使用wireshark查看我的smarpthone发送的数据包时，我只收到带有[SYN]标志的数据包，而不是我在使用时收到的3个第一个数据包我的地铁应用程序[SYN] / [SYN，ACK] / [ACK]用于握手。有人知道为什么会这样吗？

Answer 1

我找到了答案，这是非常愚蠢的，Windows的防火墙阻止了我的应用程序。

Answer 2

你添加了

吗？

<Capability Name="privateNetworkClientServer" />

到Package.appxmanifest？

在桌面应用程序中使用库Windows.Networking.Sockets（metro应用程序）c＃

2 个答案: