// This is the heuristic which detects the requests issued by Flash.ocx.
// It turned out that the implementation from ''Flash.ocx'' (tested version is 15.0.0.152)
// returns quite minimal configuration in comparison with the implementation from Microsofts'
// libraries (see grfBINDF and bindInfo.dwOptions). The impl from MS often includes something
// else.
bool WBPassthruSink::IsFlashRequest(const wchar_t* const* additionalHeaders)
{
  if (additionalHeaders && *additionalHeaders)
  {
    auto flashVersionHeader = ExtractHttpHeader<std::wstring>(*additionalHeaders, L"x-flash-version:", L"\n");
    if (!TrimString(flashVersionHeader).empty())
    {
      return true;
    }
  }
  ATL::CComPtr<IBindStatusCallback> bscb;
  if (SUCCEEDED(QueryServiceFromClient(&bscb)) && !!bscb)
  {
    DWORD grfBINDF = 0;
    BINDINFO bindInfo = {};
    bindInfo.cbSize = sizeof(bindInfo);
    if (SUCCEEDED(bscb->GetBindInfo(&grfBINDF, &bindInfo)) &&
      (BINDF_ASYNCHRONOUS | BINDF_ASYNCSTORAGE| BINDF_PULLDATA) == grfBINDF &&
      (BINDINFO_OPTIONS_ENABLE_UTF8 | BINDINFO_OPTIONS_USE_IE_ENCODING) == bindInfo.dwOptions
      )
    {
      return true;
    }
  }
  return false;
}