HTTP_FILTER_VERSION Structure

The HTTP_FILTER_VERSION structure is used by the GetFilterVersion and GetWPXFilterVersion entry-point functions to set the filter version information and to specify the types of event notifications which are to be sent to a Web filter.

Syntax

typedef struct _HTTP_FILTER_VERSION {

  DWORD dwServerFilterVersion;

  DWORD dwFilterVersion;

  CHAR lpszFilterDesc[SF_MAX_FILTER_DESC_LEN];

  DWORD dwFlags;
} HTTP_FILTER_VERSION, 

 *PHTTP_FILTER_VERSION;

Members

dwServerFilterVersion

The version number of the Web filter API used by the Forefront TMG computer. Set by the Forefront TMG Web proxy.

dwFilterVersion

The version number of the Web filter API used by the Web filter. Set by the Web filter. The version used by your filter can be set to WPX_HTTP_FILTER_REVISION definition, which is defined in the Wpxhttpfilt.h header file.

The filter version is required. If the filter version number is higher than the version number of the Web filter API used by the Forefront TMG computer in the dwServerFilterVersion parameter, the filter will not be loaded to avoid version issues.

lpszFilterDesc

Not used in Forefront TMG.

dwFlags

Bitmask containing flags that specify the types of event notifications which are to be sent to the Web filter and the port security of connections for which event notifications are sent. This bitmask is set by the Web filter. For a complete list of the possible flags and descriptions of the event notifications that they specify, see Event Notifications.

Note  The SF_NOTIFY_ORDER_DEFAULT, SF_NOTIFY_ORDER_LOW, SF_NOTIFY_ORDER_MEDIUM, and SF_NOTIFY_ORDER_HIGH flags should not be included in this parameter. These flags are used in ISAPI extensions (filters) to set the filter priority. For a Web filter, the priority is specified by the Priority property of the FPCWebFilter object that represents the filter. This property is initially set in the call to the Add method of the FPCWebFilters collection that creates the FPCWebFilter object in the filter registration code.

Requirements

Server	Requires Windows Server 2008.
Version	Requires Forefront Threat Management Gateway (TMG).
Header	Declared in Httpfilt.h.

See Also

Notification Structures

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Build date: 11/30/2009