Members
The EXTENSION_CONTROL_BLOCK structure contains the following fields:
cbSize
The size of this structure.
dwVersion
The version information of HTTP_FILTER_REVISION. The HIWORD has the major version number and the LOWORD has the minor version number.
ConnID
A unique number assigned by the HTTP server. It must not be modified.
dwHttpStatusCode
The status of the current transaction when the request is completed. Can be one of the following:
HTTP_STATUS_BAD_REQUEST
HTTP_STATUS_AUTH_REQUIRED
HTTP_STATUS_FORBIDDEN
HTTP_STATUS_NOT_FOUND
HTTP_STATUS_SERVER_ERROR
_STATUS_NOT_IMPLEMENTED
lpszLogData
Buffer of size HSE_LOG_BUFFER_LEN. Contains a null-terminated log information string, specific to the ISA, of the current transaction. This log information will be entered in the HTTP server log. Maintaining a single log file with both HTTP server and ISA transactions is very useful for administration purposes.
lpszMethod
The method with which the request was made. This is equivalent to the CGI variable REQUEST_METHOD.
lpszQueryString
Null-terminated string containing the query information. This is equivalent to the CGI variable QUERY_STRING.
lpszPathInfo
Null-terminated string containing extra path information given by the client. This is equivalent to the CGI variable PATH_INFO.
lpszPathTranslated
Null-terminated string containing the translated path. This is equivalent to the CGI variable PATH_TRANSLATED.
cbTotalBytes
The total number of bytes to be received from the client. This is equivalent to the CGI variable CONTENT_LENGTH. If this value is 0xffffffff, then there are four gigabytes or more of available data. In this case, CHttpServerContext::ReadClient should be called until no more data is returned.
cbAvailable
The available number of bytes (out of a total of cbTotalBytes) in the buffer pointed to by lpbData. If cbTotalBytes is the same as cbAvailable the variable lpbData will point to a buffer which contains all the data sent by the client. Otherwise cbTotalBytes will contain the total number of bytes of data received. The ISA will then need to use the callback function CHttpServerContext::ReadClient to read the rest of the data (starting from an offset of cbAvailable).
