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
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cbSize
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[in] The size of this structure, in bytes.
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Revision
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[in] The revision level of this structure. This is less than or equal to the version of the document, HTTP_FILTER_REVISION.
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ServerContext
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[in] Reserved for server use.
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ulReserved
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[in] Reserved for server use.
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fIsSecurePort
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[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.
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pFilterContext
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[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.
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GetServerVariable
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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.
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AddResponseHeaders
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Points to the AddResponseHeaders function that adds a header to the HTTP response.
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WriteClient
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Points to the WriteClient function that sends raw data back to the client.
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AllocMem
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Points to the AllocMem function used to allocate memory. Any memory allocated with this function will automatically be freed when the net session ends.
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ServerSupportFunction
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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