public void HandleConnectionRequest(Connection acceptedConnection)
{
Connection remoteSocksServerConnection = null;
try
{
remoteSocksServerConnection = Connection.ConnectOverHttpProxy(_RemoteSocksServerHost, _RemoteSocksServerPort);
}
catch
{
acceptedConnection.Close();
return;
}
remoteSocksServerConnection.SetObserver(this);
remoteSocksServerConnection.Send(Socks4Request.Build(Socks4Request.REQUEST_TYPE_CONNECT, _RedirectHost, _RedirectPort, "").ToByteArray());
_WaitHandle.WaitOne();
if (_RemoteSocksServerResponse == null || !_RemoteSocksServerResponse.Success)
{
SocksCommon.SendSocksError(acceptedConnection);
return;
}
SocksCommon.SendSocksSuccess(acceptedConnection, _RemoteSocksServerResponse.Port, IPAddress.Parse(_RemoteSocksServerResponse.ResolvedIP));
acceptedConnection.SetObserver(new TransmissionRedirectConnectionObserver(remoteSocksServerConnection, true));
remoteSocksServerConnection.SetObserver(new TransmissionRedirectConnectionObserver(acceptedConnection, false));
acceptedConnection.BeginReceiving();
}
public override void HandleConnectionRequest(Connection acceptedConnection)
{
Socks4Request request = Socks4Request.Build(Socks4Request.REQUEST_TYPE_BIND, _RedirectHost, _RedirectPort, "");
Connection redirectConnection = null;
try
{
redirectConnection = Connection.Connect(_SocksServerHost, _SocksServerPort);
}
catch (Exception exp)
{
acceptedConnection.Close();
return;
}
redirectConnection.SetObserver(new PortRedirectOverSocksConnectionObserver(acceptedConnection));
acceptedConnection.IsBeingTraced = ObservedServer.IsBeingTraced;
redirectConnection.BeginReceiving();
redirectConnection.Send(request.ToByteArray());
}
private static void TestRemoteServer(string remoteHost, int remotePort, string remoteSocksHost, int remoteSocksPort, ref int statuscode, ref string statusmessage)
{
Connection testConnection;
try
{
testConnection = Connection.Connect(remoteSocksHost, remoteSocksPort);
}
catch (Exception exp)
{
statuscode = 505;
statusmessage = "Could not connect to the Socks Server: " + exp.Message;
return;
}
try
{
testConnection.Send(Socks4Request.Build(Socks4Request.REQUEST_TYPE_CONNECT, remoteHost, remotePort, "").ToByteArray());
testConnection.BeginReceivingSync();
byte[] socksRawResponse = testConnection.GetNextSyncReceiveBuffer();
testConnection.Close();
Socks4Response socksResponse = Socks4Response.Parse(socksRawResponse);
if (socksResponse == null || !socksResponse.Success)
{
statuscode = 504;
statusmessage = "Socks server reports that it failed to connect to the remote host";
}
}
catch (Exception exp)
{
statuscode = 504;
statusmessage = "Failed while trying to connect to the remote host through socks: " + exp.Message;
}
}
