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using System;using System.Net.Sockets;using System.Threading;namespace PortTransponder{  class Program  {    static void Main(string[] args)    {      TcpListener tl = new TcpListener(80);//?aà??a??·??éò?±???á??ó2￠?ò?′±???ó?μ????ú      tl.Start();      while (true)//?aà?±?D?ó??-?·￡??éò??óê?2??1ò????í?§//òò?a?ò·￠??????·t??óDê±ò??????ú2?DD?í??ò??????ú??á?      {//????μ?òa???íê?ò?μ?3ìDòê?μ???·￠?íμ?êy?Y°üoóá￠?ì?a2????3ì×??D×a        try        {          TcpClient tc1 = tl.AcceptTcpClient();//?aà?ê?μè′yêy?Y?ù?′DD??±?￡?2??á100%??ó?cpu          TcpClient tc2 = new TcpClient("localhost", 3389);          tc1.SendTimeout = 300000;//éè?¨3?ê±￡?·??ò???ú??ò??±±???ó?￡??′ê1ê§è￥á??ó          tc1.ReceiveTimeout = 300000;          tc2.SendTimeout = 300000;          tc2.ReceiveTimeout = 300000;          object obj1 = (object)(new TcpClient[] { tc1, tc2 });          object obj2 = (object)(new TcpClient[] { tc2, tc1 });          ThreadPool.QueueUserWorkItem(new WaitCallback(transfer), obj1);          ThreadPool.QueueUserWorkItem(new WaitCallback(transfer), obj2);        }        catch { }      }    }    public static void transfer(object obj)    {      TcpClient tc1 = ((TcpClient[])obj)[0];      TcpClient tc2 = ((TcpClient[])obj)[1];      NetworkStream ns1 = tc1.GetStream();      NetworkStream ns2 = tc2.GetStream();      while (true)      {        try        {//?aà?±?D?try catch￡?·??òá??óò?μ??D??3ìDò?í±àà￡á?//òaê?μˉ3?′í?óìáê?è??ú?÷?′?????í??á?          byte[] bt = new byte[10240];          int count = ns1.Read(bt, 0, bt.Length);          ns2.Write(bt, 0, count);        }        catch        {          ns1.Dispose();          ns2.Dispose();          tc1.Close();          tc2.Close();          break;        }      }    }  }}

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