async void AsyncTcpProcess(object o)
{
TcpClient tc = (TcpClient)o;
NetworkStream stream = tc.GetStream();
byte[] encryptedInput, decryptedOutput, encryptedOutput;
byte[] data;
int numBytesRead = 0;
byte[] outBuf = new byte[1024];
using (var ms = new MemoryStream()) {
while (stream.DataAvailable && (numBytesRead = stream.Read(outBuf, 0, outBuf.Length)) > 0)
{
ms.Write(outBuf, 0, numBytesRead);
}
encryptedInput = ms.ToArray();
}
System.Console.WriteLine(Encoding.UTF8.GetString(encryptedInput));
string[] split = Encoding.UTF8.GetString(encryptedInput).Split('|');
if (split.Length < 2)
{
stream.Write(new byte[] { 00 }, 0, 1);
stream.Close();
return;
}
string ipAddr = split[0];
int port = Int32.Parse(split[1]);
data = SecurityModule.AESDecrypt256(Convert.FromBase64String(split[2]), key);
System.Console.WriteLine(BitConverter.ToString(data).Replace('-', ' '));
System.Console.WriteLine($"Opening socket to {ipAddr}:{port}");
TcpClient proxy = new TcpClient();
proxy.Connect(ipAddr, port);
System.Console.WriteLine($"Socket opened to {ipAddr}:{port} - status: {proxy.Connected}");
System.Console.WriteLine($"Sending {data.Length} bytes");
NetworkStream proxyStream = proxy.GetStream();
proxyStream.Write(data, 0, data.Length);
System.Console.WriteLine($"Sent {data.Length} bytes");
int nBytes = 0;
using (var ms = new MemoryStream()) {
try {
while ((numBytesRead = proxyStream.Read(outBuf, 0, outBuf.Length)) > 0)
{
ms.Write(outBuf, 0, numBytesRead);
nBytes += numBytesRead;
}
} catch (IOException e) {
System.Console.WriteLine("Stream closed");
}
decryptedOutput = ms.ToArray();
}
System.Console.WriteLine($"Received {nBytes} bytes from remote");
System.Console.WriteLine(BitConverter.ToString(decryptedOutput).Replace("-", " "));
encryptedOutput = SecurityModule.AESEncrypt256(decryptedOutput, key);
stream.Write(encryptedOutput, 0, encryptedOutput.Length);
System.Console.WriteLine($"Sent {encryptedOutput.Length} bytes to proxy client");
stream.Flush();
stream.Close();
}
