无法建立连接，因为目标计算机主动拒绝它 - 远程桌面 [英] No connection could be made because the target machine actively refused it - remote desktop

问题描述

我正在玩构建远程桌面。



我正在使用TCP。



我收到错误'无法建立联系，因为目标机器积极拒绝它'。



关于如何使这个工作的任何想法？



客户

I am playing around with building a remote desktop.

I am using TCP.

I am getting the error 'No connection could be made because the target machine actively refused it'.

Any ideas on how to get this working?

The client

private readonly TcpClient client = new TcpClient();
        private NetworkStream mainStream;
        private int portNumber;

        private static Image GrabDesktop ()
        {
            Rectangle bounds = Screen.PrimaryScreen.Bounds;
            Bitmap screenshot = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb);
            Graphics graphic = Graphics.FromImage(screenshot);
            graphic.CopyFromScreen(bounds.X, bounds.Y, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy);

            return screenshot;
        }

        private void SendDesktopImage()
        {
            BinaryFormatter binformatter = new BinaryFormatter();
            mainStream = client.GetStream();
            binformatter.Serialize(mainStream, GrabDesktop());
        }

        public Form1()
        {
            InitializeComponent();
        }

         private void btnConnect_Click(object sender, EventArgs e)
        {
            portNumber = int.Parse(txtPort.Text.Trim());

            try
            {
                client.Connect(txtIP.Text, portNumber);
                MessageBox.Show("Connected");
            }
            catch(Exception ex)
            {
                MessageBox.Show("Failed to Connect: " + ex.Message);
            }
        }

        private void btnShare_Click(object sender, EventArgs e)
        {
            if (btnShare.Text.StartsWith("Share"))
            {
                timer1.Start();
                btnShare.Text = "Stop Sharing";
            }
            else
            {
                timer1.Stop();
                btnShare.Text = "Share my screen";
            }
        }

        private void timer1_Tick(object sender, EventArgs e)
        {
            SendDesktopImage();
        }

服务器如下

the server is as follows

private readonly TcpClient client = new TcpClient();
       private NetworkStream mainStream;
       private int portNumber;

       private static Image GrabDesktop ()
       {
           Rectangle bounds = Screen.PrimaryScreen.Bounds;
           Bitmap screenshot = new Bitmap(bounds.Width, bounds.Height, PixelFormat.Format32bppArgb);
           Graphics graphic = Graphics.FromImage(screenshot);
           graphic.CopyFromScreen(bounds.X, bounds.Y, 0, 0, bounds.Size, CopyPixelOperation.SourceCopy);

           return screenshot;
       }

       private void SendDesktopImage()
       {
           BinaryFormatter binformatter = new BinaryFormatter();
           mainStream = client.GetStream();
           binformatter.Serialize(mainStream, GrabDesktop());
       }

       public Form1()
       {
           InitializeComponent();
       }

        private void btnConnect_Click(object sender, EventArgs e)
       {
           portNumber = int.Parse(txtPort.Text.Trim());

           try
           {
               client.Connect(txtIP.Text, portNumber);
               MessageBox.Show("Connected");
           }
           catch(Exception ex)
           {
               MessageBox.Show("Failed to Connect: " + ex.Message);
           }
       }

       private void btnShare_Click(object sender, EventArgs e)
       {
           if (btnShare.Text.StartsWith("Share"))
           {
               timer1.Start();
               btnShare.Text = "Stop Sharing";
           }
           else
           {
               timer1.Stop();
               btnShare.Text = "Share my screen";
           }
       }

       private void timer1_Tick(object sender, EventArgs e)
       {
           SendDesktopImage();
       }

我尝试过：



我试过运行上面的代码

What I have tried:

I have tried running the above code

推荐答案

所以你创建了两个客户端而没有服务器来监听Connections？我会再次阅读有关基础知识的内容。实现一个异步侦听套接字（如MSDN所示 - 如果你搜索套接字服务器 - 我不喜欢这样说 - 但是RTFM）...

短版本：一方面创建一个监听器：

So you created two Clients and no Server to listen for Connections? I'd say read about the Basics again. Implement an async listening socket (as showed on MSDN - if you search for Socket Server - I don't like to say it - but RTFM)...
Short Version: On one side create a listener:

Socket socketListener = new Socket(AddressFamily.InterNetwork, SocketType.Stream, ProtocolType.Tcp);
socketListener.Bind(localEndPoint);
socketListener.Listen(100);

// then in some "wait"-Loop (async to main thread) you wait for Connections
socketListener.BeginAccept(new AsyncCallback(AcceptCallback), socketListener);

快速浏览后，客户端看起来还不错......



随意到aks进一步的问题，祝你的项目好运！

You Client side seems ok after a quick look...

Feel free to aks further questions, good luck with your Project!

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