HTTP_FILTER_CONTEXT

The HTTP_FILTER_CONTEXT structure is used by HttpFilterProc and HttpWPXFilterProc to obtain information about the current request.

typedef struct _HTTP_FILTER_CONTEXT {

  DWORD cbSize;

  DWORD Revision;

  PVOID ServerContext;

  DWORD ulReserved;

  BOOL fIsSecurePort;

  PVOID pFilterContext;

  BOOL (WINAPI)* GetServerVariable;

  BOOL (WINAPI)* AddResponseHeaders;

  BOOL (WINAPI)* WriteClient;

  VOID*  (WINAPI)* AllocMem;

  BOOL (WINAPI)* ServerSupportFunction;
} HTTP_FILTER_CONTEXT, 

*PHTTP_FILTER_CONTEXT;

Members

cbSize

The size of this structure, in bytes.

Revision

The revision level of this structure.

ServerContext

Reserved for server use.

ulReserved

Reserved for server use.

fIsSecurePort

A value of TRUE indicates that this event is over a secure port. A value of FALSE indicates that the event is not over a secure port.

pFilterContext

Pointer to any context information that the filter wants to associate with this request. Any memory associated with this request can be safely freed during the SF_NOTIFY_END_OF_NET_SESSION notification.

GetServerVariable

Pointer to the GetServerVariable function that retrieves information about the server and this connection. For some notifications, some variables may not be defined. For example, notifications that occur before PREPROC_HEADERS, such as the READ_RAW_DATA notification, may have undefined variables.

AddResponseHeaders

Pointer to the AddResponseHeaders function that adds a header to the HTTP response.

WriteClient

Pointer to the WriteClient function that sends raw data back to the client.

AllocMem

Pointer to the AllocMem function used to allocate memory. Any memory allocated with this function will automatically be freed when the session ends.

ServerSupportFunction

Pointer to the ServerSupportFunction function used to extend the Web filter functions. Parameters are specific to the extensions.

Requirements

Server: Requires Windows Server 2003 or Windows 2000.
Version: Requires Internet Security and Acceleration Server 2004.
Header: Declared in Wpxhttpfilt.h.

See Also

Notification Structures