typedef struct _INTERNET_BUFFERSA
{
  DWORD dwStructSize;
  _INTERNET_BUFFERSA* Next;
  LPCSTR lpcszHeader;
  DWORD dwHeadersLength;
  DWORD dwHeadersTotal;
  LPVOID lpvBuffer;
  DWORD dwBufferLength;
  DWORD dwBufferTotal;
  DWORD dwOffsetLow;
  DWORD dwOffsetHigh;
} INTERNET_BUFFERSA, *LPINTERNET_BUFFERSA;