SF_REQ_DISABLE_NOTIFICATIONS Callback Function

Article
08/13/2010

The SF_REQ_DISABLE_NOTIFICATIONS form of the ServerSupportFunction callback function can be used to disable types of event notifications for your Web filter for the remaining lifetime of the current request. If a particular event notification is disabled for your filter, the Forefront TMG Web proxy will not call your filter when the applicable event occurs.

New requests will generate the event notifications for which your filter registered when it was loaded.

Syntax

BOOL WINAPI * ServerSupportFunction(
  __in  struct _HTTP_FILTER_CONTEXT* pfc,
  __in  enum SF_REQ_TYPE sfReq,
        PVOID pData,
  __in  DWORD ul1,
        DWORD ul2
);

Parameters

pfc
Pointer to the HTTP_FILTER_CONTEXT data structure that is associated with the current, active HTTP session. Pass the filter context in this parameter.
sfReq
Specifies the particular support function that is to be executed by the Web filter, in this case, SF_REQ_DISABLE_NOTIFICATIONS.
pData
Unused in this support function.
ul1
Bitmask containing flags that specify the types of event notifications which are to be disabled. The possible flags are listed in the Remarks section.
ul2
Unused in this support function.

Return Value

This callback function returns TRUE if the call is successful; otherwise, it returns FALSE. To obtain extended error information, call GetLastError.

Remarks

This callback function can disable the following event notifications:

SF_NOTIFY_ACCESS_DENIED
SF_NOTIFY_AUTH_COMPLETE
SF_NOTIFY_AUTHENTICATION
SF_NOTIFY_END_OF_NET_SESSION
SF_NOTIFY_END_OF_REQUEST
SF_NOTIFY_LOG
SF_NOTIFY_PREPROC_HEADERS
SF_NOTIFY_READ_RAW_DATA
SF_NOTIFY_SEND_RAW_DATA
SF_NOTIFY_SEND_RESPONSE
SF_NOTIFY_URL_MAP

This callback function can disable only the general event notifications that are not specific to Forefront TMG. The event notifications that are specific to Forefront TMG can be disabled by the WPXSupportFunction callback function. For more information about the types of event notifications that are sent to Web filters, see Event Notifications.

Requirements

Server	Requires Windows Server 2008 R2 or Windows Server 2008 x64 Edition with SP2.
Version	Requires Forefront Threat Management Gateway (TMG) 2010.
Header	Declared in Wpxhttpfilt.h.
DLL	Requires W3Filter.dll.

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