HTTP_FILTER_CONTEXT

This structure is used by HTTP_FILTER_PROC to obtain information about the current request. This structure is very similar in function to an ISAPI extension's EXTENSION_CONTROL_BLOCK.

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
[in] The size of this structure, in bytes.
Revision
[in] The revision level of this structure. This is less than or equal to the version of the document, HTTP_FILTER_REVISION.
ServerContext
[in] Reserved for server use.
ulReserved
[in] Reserved for server use.
fIsSecurePort
[in] 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
[in/out] Points 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
Points to a function that retrieves information about the server and this connection. For some notifications, some variables may not be defined. An example of this are any notifications which occur before PREPROC_HEADERS, such as the READ_RAW_DATA notification.
AddResponseHeaders
Points to the AddResponseHeaders function that adds a header to the HTTP response.
WriteClient
Points to the WriteClient function that sends raw data back to the client.
AllocMem
Points to the AllocMem function used to allocate memory. Any memory allocated with this function will automatically be freed when the net session ends.
ServerSupportFunction
Points to the ServerSupportFunction function used to extend the ISAPI filter functions. Parameters are specific to the extensions.

See Also

GetServerVariable, AddResponseHeaders, WriteClient, AllocMem, ServerSupportFunction