The following ServerSupportFunctions were supported in ISAPI 2.0
HSE_REQ_SEND_URL_REDIRECT_RESP
HSE_REQ_SEND_URL
HSE_REQ_SEND_RESPONSE_HEADER
HSE_REQ_DONE_WITH_SESSION
HSE_REQ_MAP_URL_TO_PATH
HSE_REQ_GET_SSPI_INFO
HSE_APPEND_LOG_PARAMETER
HSE_REQ_SEND_URL_EX
HSE_REQ_IO_COMPLETION
HSE_REQ_TRANSMIT_FILE
HSE_REQ_REFRESH_ISAPI_ACL