Question

我在C＃中编写了一个简单的Tcp服务器：（当它与服务器没有任何关系时，我已经替换了“做一些东西”中的一些代码部分。现在，当我尝试从python客户端或Android客户端联系服务器时，我收到错误，例如：“另一方主动拒绝连接”。我应该做些什么？是我的C＃代码中的问题，还是我可能没有正确联系它？谢谢。

public bool ListenLoop(Int32 port, IPAddress localAddr)
        {
            try
            {
              server = new TcpListener(localAddr, port);

              // Start listening for client requests.
              server.Start();
              // Buffer for reading data
              Byte[] bytes = new Byte[256];
              String data = null;

              // Enter the listening loop. 
              while(true) 
              {
                //Waiting for a connection

                // Perform a blocking call to accept requests. 
                TcpClient client = server.AcceptTcpClient();            
                //connected!


                // Get a stream object for reading and writing
                NetworkStream stream = client.GetStream();
                int i;

                // Loop to receive all the data sent by the client. 
                while((i = stream.Read(bytes, 0, bytes.Length))!=0) 
                {   
                  // Translate data bytes to a ASCII string. 
                  data = System.Text.Encoding.ASCII.GetString(bytes, 0, i); 
                  //handling opCodes
                  if(data[0] == '0') //log in
                  {
                      //do some stuff
                      byte[] msg = System.Text.Encoding.ASCII.GetBytes(response);
                      // Send back a response.
                      stream.Write(msg, 0, msg.Length);
                      //sent    
                  }
                  else if (data[0] == '1') //download tune names
                  {
                      //do some stuff 
                      byte[] msg = System.Text.Encoding.ASCII.GetBytes(response); //response is the names
                      // Send back a response.
                      stream.Write(msg, 0, msg.Length);
                      //sent  
                  }
                  else if (data[0] == '2') //changing choice
                  {
                      //do some stuff
                      byte[] msg = System.Text.Encoding.ASCII.GetBytes(response);
                      // Send back a response.
                      stream.Write(msg, 0, msg.Length);
                      //sent   

                  }

                }

                // Shutdown and end connection
                client.Close();
              }
            }
            catch(SocketException)
            {
                return false;
            }

            finally
            {
               // Stop listening for new clients.
               server.Stop();     
            }
         }

Answer 1

您确定没有阻止传入连接的防火墙（因为它是TCP）吗？

此外，如果您的服务器正在测试中，您应该将一些输出写入日志文件，甚至只是控制台。至少你知道发生了什么。

Answer 2

server = new TcpListener（localAddr，port）; 改成 server = new TcpListener（port）;

无法从c＃tcp服务器接收数据

2 个答案: