ServerSupportFunction

The ServerSupportFunction callback function can be used by ISAPI filters to accomplish a wide variety of tasks.

BOOL WINAPI * ServerSupportFunction(

  PHTTP_FILTER_CONTEXT pfc,

  enum SF_REQ_TYPE sfReq,

  PVOID pData,

  DWORD ul1,

  DWORD ul2

);

The parameter sfReq specifies the particular support function that is to be executed by IIS. The remaining parameters are described in the individual support function sections; see the following list.

Note   If a parameter is designated as unused for a particular support function, you should set the parameter to NULL or 0, as appropriate.