C#服务器客户端在连接UWP时失败 [英] C# server client fails on connect UWP

问题描述

我尝试使用UWP上的简单TCP客户端服务器进行通信，我点击了此链接

I try to communicate using a simple TCP client server on UWP, I followed this link UWP socket but it looks like it doesn't works. I've added capabilities for both app to provide client & server. Even if it doesn't appear in the code, I have handled the error, which give me the following : System.Runtime.InteropServices.COMException (0x8007274C): A connection attemps has failed because the connected part has not answer after a certain amount of time or the connection has failed because host has not respond

System.Runtime.InteropServices.COMException(0x8007274C):无法永久性地建立起汽车的部分连接性，而在可疑的汽车上将无法确定的连接性Hôtede connexion n'a pasrépondu.

据我所知，它在行 await clientSocket.ConnectAsync(serverHost，serverPort);

从一开始，它应该在Rasperry Pi 3上运行服务器，并在Windows 10移动版(Lumia 950 XL内部版本14385)上运行客户端，但是直到现在我只在运行Windows 10 Pro(内部版本14385)的Surface Pro 3上终止运行.

At term, it should run the server on a Rasperry Pi 3 and the Client on a Windows 10 mobile (Lumia 950 XL build 14385) but until now I only terted on a surface pro 3 running Windows 10 Pro (build 14385)

客户

try
{
        StreamSocket clientSocket;

        clientSocket = new StreamSocket();
        HostName serverHost = new HostName("localhost");
        string serverPort = "5464";
        await clientSocket.ConnectAsync(serverHost, serverPort);
        Stream streamOut = clientSoket.OutputStream.AsStreamForWrite();
        StreamWriter writer = new StreamWriter(streamOut);
        string request = "test";
        await writer.WriteLineAsync(request);
        await writer.FlushAsync();
        Stream streamIn = clientSocket.InputStream.AsStreamForRead();
        StreamReader reader = new StreamReader(streamIn);
        string response = await reader.ReadLineAsync();
    }
    catch(Exception ex)
    {
        Console.WriteLine(ex.ToString());//handle
    }

服务器

try
{
    serverSocket = new StreamSocketListener();
    serverSocket.ConnectionReceived += ServerSocket_ConnectionReceived;
    await serverSocket.BindServiceNameAsync("5464");
}
catch(Exception e)
{
    Console.WriteLine(e.ToString());//handle
}

private async void ServerSocket_ConnectionReceived(StreamSocketListener sender, StreamSocketListenerConnectionReceivedEventArgs args)
{
    Stream inputStream = args.Socket.InputStream.AsStreamForRead();
    StreamReader reader = new StreamReader(inputStream);
    string request = await reader.ReadLineAsync();
        Stream outputStream = args.Socket.OutputStream.AsStreamForWrite();
    StreamWriter writter = new StreamWriter(outputStream);
    await writter.WriteLineAsync("Ok");
    await writter.FlushAsync();
}

推荐答案

经过一些研究并感谢Stuart Smith，看来两个应用程序无法直接相互连接.出于开发目的，可以使用启用网络环回的工具在本地计算机上允许它.当我尝试在lumia上运行客户端并在PC上运行服务器时，它运行良好.

After some research and thanks to Stuart Smith, It appears that two apps cannot directly connect between each other. For developement purposes, it could be allowed on a local machine, using a tool to enable network loopback. When I tried to run the client on my lumia and the server on my PC, it worked perfectly.

这里是用于了解此内容的链接.

Here are the link used to understand this.

StackOverFlow UWP启用环回

在侧面加载的Windows Store应用中使用网络环回

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