private static void Main(string[] args)
{
if (args.Length != 1)
{
Console.WriteLine("usage: {0} [hostname]", AppDomain.CurrentDomain.FriendlyName);
return;
}
TcpListener tcpListener = new TcpListener(IPAddress.Any, 4114);
tcpListener.Start(100);
while (true)
{
SocketHandler socketHandler = new SocketHandler(tcpListener.AcceptSocket(), args[0]);
new Thread(socketHandler.handleConnection).Start();
}
}
public void handleConnection()
{
NetworkStream networkStream = new NetworkStream(soc);
byte[] numArray = new byte[BUFFER_SIZE];
StringBuilder stringBuilder = new StringBuilder();
int bufferSize = BUFFER_SIZE;
while (bufferSize == BUFFER_SIZE)
{
bufferSize = networkStream.Read(numArray, 0, BUFFER_SIZE);
string str = Encoding.UTF8.GetString(numArray);
stringBuilder.Append(str);
}
string str1 = stringBuilder.ToString();
str1 = str1.Replace("\0", "");
if (str1.Length >= 2)
{
string[] strArrays = str1.Split('\n');
for (int i = 0; i < strArrays.Length; i++)
{
string str2 = strArrays[i];
string str3 = str2.Replace("\r", "");
if (!str2.ToLower().Contains("accept-encoding"))
{
if (str3.Length >= 4 && str3.Trim().Substring(0, 4).ToLower() == "host")
{
Regex regex = new Regex(string.Concat("host: (.*)\\.", LOCAL_HOSTNAME.Replace(".", "\\.")));
Match match = regex.Match(str3.ToLower());
fwdDest = match.Groups[1].Value;
str3 = string.Concat("Host: ", fwdDest);
}
SocketHandler socketHandler = this;
socketHandler.requestHeaders = string.Concat(socketHandler.requestHeaders, str3, "\r\n");
}
}
requestHeaders = string.Concat(requestHeaders.Trim(), "\r\n\r\n");
if (requestHeaders == "")
{
return;
}
int num = 0;
try
{
NetworkStream stream = new TcpClient(fwdDest, 80).GetStream();
byte[] bytes = new byte[BUFFER_SIZE];
bytes = Encoding.UTF8.GetBytes(requestHeaders);
stream.Write(bytes, 0, bytes.Length);
bufferSize = BUFFER_SIZE;
while (bufferSize > 0)
{
bufferSize = stream.Read(numArray, 0, BUFFER_SIZE);
num = num + bufferSize;
networkStream.Write(numArray, 0, bufferSize);
}
networkStream.Close();
stream.Close();
}
catch (Exception ex)
{
if (num == 0)
{
byte[] buf = Encoding.ASCII.GetBytes("HTTP/1.1 200 OK\r\nCache-Control: no-cache\r\n\r\n<head><title>prox error</title></head><body><pre>An error occurred: " + ex.Message + "\r\nCheck your address and try again.</pre></body>\r\n\r\n");
Console.WriteLine("hmm:");
Console.WriteLine(ex.Message);
soc.Send(buf);
}
}
soc.Close();
}
}
