C# 超级简略的Telnet (TcpClient)客户端

 1 using System; 2 using System.Collections.Generic; 3 using System.Linq; 4 using System.Text; 5 using System.Net.Sockets; 6 using System.IO; 7  8 namespace ConsoleApplication1 9 {10     class Program11     {12         public static NetworkStream stream;13         public static TcpClient tcpclient;14         public static string ip;15         public static  int port;16         static void Main(string[] args)17         {18             Console.WriteLine("目标IP:");19             ip = Console.ReadLine();20             Console.WriteLine("目标Port:");21             port =int.Parse(Console.ReadLine());22 23             Run();24         }25 26         static public void Run()27         {28             tcpclient = new TcpClient(ip, port);  // 连接服务器29             stream = tcpclient.GetStream();   // 获取网络数据流对象30             StreamWriter sw = new StreamWriter(stream);31             StreamReader sr = new StreamReader(stream);32             while (true)33             {34                 //Read Echo35                 //Set ReadEcho Timeout36                 stream.ReadTimeout = 10;37                 try38                 {39                     while (true)40                     {                        41                             char c = (char)sr.Read();42                             if (c < 256)43                             {44                                 if (c == 27)45                                 {46                                     while (sr.Read() != 109) { }47                                 }48                                 else49                                 {50                                     Console.Write(c);51                                 }52                             }53                     }54                 }55                 catch56                 {57                     58                 }59                 //Send CMD60                 sw.Write("{0}\r\n", Console.ReadLine());61                 sw.Flush();62             }63         }64 65     }66 }