c# - System.Net.Sockets.Tcpclient.Connect 错误

Question

我正在尝试在我的控制台应用程序和 PIC 微 Controller 之间建立 TCP 连接。这里的行为很奇怪。有时我能够建立联系，有时却不能。行为是完全随机的。下面给出了代码以及我收到的错误的快照。

using System;
using System.IO;
using System.Net;
using System.Text;
using System.Net.Sockets;

namespace ConsoleApplication1
{
    class Program
    {
        static void Main(string[] args)
        {
            while (true)
            {
                try
                {
                    TcpClient tcpclnt1 = new TcpClient();
                    Console.WriteLine("Connecting.....");

                    tcpclnt1.Connect("10.112.90.246", 13002);
                    // use the ipaddress as in the server program

                    Console.WriteLine("Connected");
                    Console.Write("Enter the string to be transmitted : ");

                    String str = Console.ReadLine();
                    Stream stm = tcpclnt1.GetStream();

                    ASCIIEncoding asen = new ASCIIEncoding();
                    byte[] ba = asen.GetBytes(str);
                    Console.WriteLine("Transmitting.....");

                    stm.Write(ba, 0, ba.Length);

                    //byte[] bb = new byte[100];
                    //int k = stm.Read(bb, 0, 100);

                    //for (int i = 0; i < k; i++)
                    //    Console.Write(Convert.ToChar(bb[i]));

                    tcpclnt1.Close();
                }

                catch (Exception e)
                {
                    Console.WriteLine("Error..... " + e.StackTrace);
                }
            }

        }
    }
}

错误

消息错误

Answer 1

您使用的是 IP 地址而不是主机名，将字符串作为参数的连接方法需要 DNS 主机名而不是 IP 地址:

public void Connect(string hostname, int port)

hostname

Type: System.String

The DNS name of the remote host to which you intend to connect.

使用主机名或 method它以 IP 作为参数 istead参见 Documentation