/// <summary>
/// Triggered before the response is sent back to the client
/// </summary>
/// <param name="responseInfo"></param>
/// <returns></returns>
protected override HttpResponseInfo OnBeforeResponseToClient(HttpResponseInfo responseInfo)
{
if (_responseReplacements != null && _responseReplacements.Count > 0)
{
string response = responseInfo.ToString();
bool wasReplaced = false;
foreach (string key in _responseReplacements.Keys)
{
if (Utils.IsMatch(response, key))
{
response = Utils.ReplaceGroups(response, key, _responseReplacements[key]);
HttpServerConsole.Instance.WriteLine(LogMessageType.Information, "Response replacement applied for pattern: '{0}'", key);
wasReplaced = true;
}
}
if (wasReplaced)
{
//remove chunked encoding
response = Regex.Replace(response, "Transfer-Encoding:\\s?chunked\\r\\n", "", RegexOptions.IgnoreCase);
responseInfo = new HttpResponseInfo(response);
}
}
if (!_isNonEssential)
{
//update tracked paterns from the response
PatternTracker.Instance.UpdatePatternValues(responseInfo);
}
if (CurrDataStoreRequestInfo != null)
{
//trap the response (this will only occur if the trap is enabled)
if (HttpTrap.Instance.TrapResponses)
{
TrafficDataStore.SaveResponse(CurrDataStoreRequestInfo.Id, responseInfo.ToArray());
if (HttpTrap.Instance.TrapResponse(CurrDataStoreRequestInfo, responseInfo))
{
responseInfo = new HttpResponseInfo(TrafficDataStore.LoadResponseData(CurrDataStoreRequestInfo.Id));
if (responseInfo.ResponseBody != null && responseInfo.ResponseBody.IsChunked == false)
{
responseInfo.Headers["Content-Length"] = responseInfo.ResponseBody.Length.ToString();
}
}
}
if (_trackRequestContext)
{
//replace the request with its request id
//store information about where the request was found in previous traffic responses stored in the
//current traffic file
TrackRequestContext(_requestInfo);
}
}
return(responseInfo);
}
/// <summary>
/// Writes a CRWAE message to the client when response is not available from server
/// </summary>
/// <param name="statusCode">HTTP status code for the response</param>
/// <param name="reason">Brief explanation of error</param>
/// <param name="serviceCode">ID of the CRAWE message</param>
/// <param name="args">Message args</param>
protected virtual void ReturnHttpErrorResponse(HttpStatusCode statusCode, string reason, ServiceCode serviceCode, params object [] args)
{
byte[] messageBytes = HttpErrorResponse.GenerateHttpErrorResponse(statusCode, reason, serviceCode, args);
if (!TryWriteToStream(messageBytes))
{
return;
}
//add the response if we are adding requests to the data source
if (_currDataStoreRequestInfo != null)
{
_currDataStoreRequestInfo.ResponseStatus = statusCode.ToString();
_currDataStoreRequestInfo.ResponseTime = DateTime.Now;
TrafficDataStore.SaveResponse(_currDataStoreRequestInfo.Id, messageBytes);
_currDataStoreRequestInfo = null;
}
ClientStreamWrapper.Close();
}
/// <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);
}
}