Question

我想让2个c＃应用程序分别位于单独的计算机上，并且都连接到同一ADSL路由器以相互发送消息，我知道我们必须使用Sockets，并且在Internet上尝试了许多解决方案，但它们都是在同一台计算机上工作，但不在另一台计算机上工作。我相信问题出在IP地址上，但是我尝试了很多，但都没有好结果有没有简单的代码可以帮助您

我在服务器端尝试了此功能

    public static void StartServer()
    {

        IPHostEntry host = Dns.GetHostEntry("DESKTOP-SBJHC7I");
        IPAddress ipAddress = host.AddressList[0];
        Console.WriteLine(ipAddress.ToString());
        IPEndPoint localEndPoint = new IPEndPoint(ipAddress, 11000);


        try
        {

            // Create a Socket that will use Tcp protocol      
            Socket listener = new Socket(ipAddress.AddressFamily, SocketType.Stream, ProtocolType.Tcp);
            // A Socket must be associated with an endpoint using the Bind method  
            listener.Bind(localEndPoint);

            // Specify how many requests a Socket can listen before it gives Server busy response.  
            // We will listen 10 requests at a time  
            listener.Listen(10);

            Console.WriteLine("Waiting for a connection...");
            Socket handler = listener.Accept();

            // Incoming data from the client.    
            string data = null;
            byte[] bytes = null;

            while (true)
            {
                bytes = new byte[1024];
                int bytesRec = handler.Receive(bytes);
                data += Encoding.ASCII.GetString(bytes, 0, bytesRec);
                if (data.IndexOf("<EOF>") > -1)
                {
                    break;
                }
            }

            Console.WriteLine("Text received : {0}", data);

            byte[] msg = Encoding.ASCII.GetBytes(data);
            handler.Send(msg);
            handler.Shutdown(SocketShutdown.Both);
            handler.Close();
        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }

        Console.WriteLine("\n Press any key to continue...");
        Console.ReadKey();
    }

以及此功能在客户端

    public static void StartClient()
    {
        byte[] bytes = new byte[1024];

        try
        {
            // Connect to a Remote server  
            // Get Host IP Address that is used to establish a connection  
            // In this case, we get one IP address of localhost that is IP : 127.0.0.1  
            // If a host has multiple addresses, you will get a list of addresses  
            IPHostEntry host = Dns.GetHostEntry("DESKTOP-SBJHC7I");
            IPAddress ipAddress = host.AddressList[0];
            IPEndPoint remoteEP = new IPEndPoint(ipAddress, 11000);

            // Create a TCP/IP  socket.    
            Socket sender = new Socket(ipAddress.AddressFamily,
                SocketType.Stream, ProtocolType.Tcp);

            // Connect the socket to the remote endpoint. Catch any errors.    
            try
            {
                // Connect to Remote EndPoint  
                sender.Connect(remoteEP);

                Console.WriteLine("Socket connected to {0}",
                    sender.RemoteEndPoint.ToString());

                // Encode the data string into a byte array.    
                byte[] msg = Encoding.ASCII.GetBytes("This is a test<EOF>");

                // Send the data through the socket.    
                int bytesSent = sender.Send(msg);

                // Receive the response from the remote device.    
                int bytesRec = sender.Receive(bytes);
                Console.WriteLine("Echoed test = {0}",
                    Encoding.ASCII.GetString(bytes, 0, bytesRec));

                // Release the socket.    
                sender.Shutdown(SocketShutdown.Both);
                sender.Close();

            }
            catch (ArgumentNullException ane)
            {
                Console.WriteLine("ArgumentNullException : {0}", ane.ToString());
            }
            catch (SocketException se)
            {
                Console.WriteLine("SocketException : {0}", se.ToString());
            }
            catch (Exception e)
            {
                Console.WriteLine("Unexpected exception : {0}", e.ToString());
            }

        }
        catch (Exception e)
        {
            Console.WriteLine(e.ToString());
        }
    }

Answer 1

请确保您的客户端连接到启动服务器的相同IP。因为在您的代码中似乎您的客户端正在连接到主机，而您是从localhost身份获取主机的。为了您的测试目的，请在远程端点中对服务器的IP地址进行硬编码。如果问题仍然存在，那么我将共享代码以在其他网络上进行测试。

两台计算机之间的C＃套接字通信

1 个答案: