/// <summary>
/// Process a CONNECT request
/// </summary>
protected void ProcessConnect()
{
// Reset request
_requestBuilder = new ByteArrayBuilder();
try
{
// got a connect
string response = _requestInfo.HttpVersion + " 200 Connection established\r\nContent-length: 0\r\nProxy-Agent: Traffic Viewer Proxy\r\n\r\n";
byte[] line = Constants.DefaultEncoding.GetBytes(response);
HttpServerConsole.Instance.WriteLine(LogMessageType.Information,
"Sending response: 200 Connection established for request: {0}", _requestInfo.RequestLine);
// Give the OK
if (!TryWriteToStream(line))
{
return;
}
if (!TrySecureStream())
{
return;
}
// Keep reading on this now encrypted stream
ClientStreamWrapper.BeginRead(Buffer, 0, Buffer.Length, new AsyncCallback(OnRead), ClientStreamWrapper);
}
catch (Exception ex)
{
HttpServerConsole.Instance.WriteLine(LogMessageType.Error,
"SSL Connect failed: {0}", ex.Message);
ClientStreamWrapper.Close();
}
}
/// <summary>
/// Starts the connection
/// </summary>
public virtual void Start()
{
_stop = false;
try
{
if (_isSecure)
{
if (!TrySecureStream())
{
return;
}
}
// Keep on reading
IAsyncResult result = ClientStreamWrapper.BeginRead(Buffer, 0, Buffer.Length, new AsyncCallback(OnRead), ClientStreamWrapper);
if (result == null)
{
ClientStreamWrapper.Close();
}
}
catch (Exception ex)
{
HttpServerConsole.Instance.WriteLine("Error starting proxy connection: {0}", ex.Message);
}
}
/// <summary>
/// Writes a response to the client stream
/// </summary>
/// <param name="responseInfo"></param>
protected virtual void ReturnResponse(HttpResponseInfo responseInfo)
{
HttpServerConsole.Instance.WriteLine(LogMessageType.Information,
"Sending response: {0} for request: {1}", responseInfo.StatusLine, _requestInfo.RequestLine);
if (_currDataStoreRequestInfo != null)
{
_currDataStoreRequestInfo.ResponseStatus = responseInfo.Status.ToString();
_currDataStoreRequestInfo.ResponseTime = DateTime.Now;
}
//process response headers
if (responseInfo.Status == 401)
{
//we need to send the proxy support header/ or overwrite the existing proxy support header
responseInfo.Headers["Proxy-Support"] = "Session-Based-Authentication";
}
//if connection is close disconnect, or if the client sent us a connection close message
if (String.Compare(responseInfo.Headers[CONNECTION_HEADER], "close", true) == 0 ||
String.Compare(_requestInfo.Headers[CONNECTION_HEADER], "close", true) == 0)
{
_isClose = true;
}
byte[] responseHead = HandleResponseByteChunk(responseInfo.ResponseHead);
if (!TryWriteToStream(responseHead))
{
return;
}
;
// Return the substitute response body
if (responseInfo.ResponseBody.IsChunked)
{
byte[] chunk;
byte[] chunkBuf;
while ((chunk = responseInfo.ResponseBody.ReadChunk()) != null)
{
//write the chunk size line
chunkBuf = Constants.DefaultEncoding.GetBytes(String.Format("{0:x}\r\n", chunk.Length));
chunkBuf = HandleResponseByteChunk(chunkBuf);
if (!TryWriteToStream(chunkBuf))
{
return;
}
//write the chunk
chunk = HandleResponseByteChunk(chunk);
if (!TryWriteToStream(chunk))
{
return;
}
chunkBuf = Constants.DefaultEncoding.GetBytes("\r\n");
chunkBuf = HandleResponseByteChunk(chunkBuf);
if (!TryWriteToStream(chunkBuf))
{
return;
}
}
//write a last chunk with the value 0
// write the last chunk size
chunkBuf = Constants.DefaultEncoding.GetBytes("0\r\n\r\n");
chunkBuf = HandleResponseByteChunk(chunkBuf);
if (!TryWriteToStream(chunkBuf))
{
return;
}
}
else
{
byte[] buffer = responseInfo.ResponseBody.ToArray();
if (buffer != null)
{
buffer = HandleResponseByteChunk(buffer);
if (!TryWriteToStream(buffer))
{
return;
}
}
}
//cleanup the request info
_requestBuilder = new ByteArrayBuilder();
if (_currDataStoreRequestInfo != null)
{
TrafficDataStore.SaveResponse(_currDataStoreRequestInfo.Id, _currentRequestResponseBytes);
}
_currDataStoreRequestInfo = null;
_currentRequestResponseBytes = null;
//close the connection if the request had a connection close header
if (_isClose)
{
ClientStreamWrapper.Close();
}
else
{
_isBusy = false;
ClientStreamWrapper.BeginRead(Buffer, 0, Buffer.Length, new AsyncCallback(OnRead), ClientStreamWrapper);
}
}