如何使用TCPListener（或其他方法）绑定到网络上的设备

1 回答

• 1

  TcpListener将在您的服务器上运行，等待与特定端口的连接 . TcpClient将用于 Build 与192.168.xxx.xxx:xxxx地址的连接 . 因此，当您执行Listener.Start时，您正在侦听在侦听器运行的地址和端口上与侦听器 Build 的连接 . 本地地址表示您正在侦听要进行连接的地址 .

  如果要连接到远程ip：端口，那么应该尝试使用TcpClient . 一个简单的测试是看你是否可以连接到smtp服务器或类似的东西 .

  编辑： - 包含一个非常粗略的示例，用于连接和发送/接收数据到pop.google.com .

  static void Main(string[] args)
      {
          Stream networkStream = null;
          string hostName = "pop.gmail.com";
          int port = 995;
          TcpClient client = new TcpClient();
          MemoryStream dataStream = new MemoryStream();
          try
          {
  
              client.SendTimeout = 15000;
              client.ReceiveTimeout = 15000;
              client.Connect(hostName, port);
              networkStream = new SslStream(client.GetStream(), true);
              ((SslStream)networkStream).AuthenticateAsClient(hostName);
              const int ChunkSize = 256;
              int bytesRead = 0;
              const int BufferSize = 1024;
              byte[] buffer = new byte[BufferSize];
  
              //CONNECT SHOULD GET BANNER
              string messageReceived;
              using (dataStream = new MemoryStream())
              {
                  do
                  {
                      bytesRead = networkStream.Read(buffer, 0, ChunkSize);
                      dataStream.Write(buffer, 0, bytesRead);
                      messageReceived = Encoding.UTF8.GetString(dataStream.ToArray());
                  } while (!messageReceived.EndsWith(Environment.NewLine));
  
                  Console.WriteLine("Response:{0}", Encoding.UTF8.GetString(dataStream.ToArray()));
              }
  
              buffer = Encoding.UTF8.GetBytes("USER test.net.user@gmail.com\r\n");
  
              networkStream.Write(buffer, 0, buffer.Length);
  
              buffer = new byte[BufferSize];
              using (dataStream = new MemoryStream())
              {
                  do
                  {
                      bytesRead = networkStream.Read(buffer, 0, ChunkSize);
                      dataStream.Write(buffer, 0, bytesRead);
                      messageReceived = Encoding.UTF8.GetString(dataStream.ToArray());
                  } while (!messageReceived.EndsWith(Environment.NewLine));
  
                  Console.WriteLine("Response:{0}", Encoding.UTF8.GetString(dataStream.ToArray()));
              }
          }
          catch (Exception e)
          {
              Console.Write(e);
          }
          finally
          {
              if (networkStream != null)
              {
                  networkStream.Dispose();
                  networkStream = null;
              }
              if (client != null)
              {
                  if (client.Connected)
                  {
                      client.Client.Disconnect(false);
                  }
                  client.Close();
                  client = null;
              }
          }
  
          Console.ReadKey();
      }
  

  回复于 2024-05-05T02:34:23+08:00