This structure is used by the ServerSupportFunction HSE_REQ_SEND_RESPONSE_HEADER_EX. An ISAPI extension must fill the structure with the required data and return it to IIS. You can use this structure to indicate that the connection that is being used to service the current request should be kept active for further processing.
typedef struct _HSE_SEND_HEADER_EX_INFO {
LPCSTR pszStatus; // HTTP status code; for example "200 OK".
LPCSTR pszHeader; // HTTP header.
DWORD cchStatus; // Number of characters in status code.
DWORD cchHeader; // Number of characters in header.
BOOL fKeepConn; // Keep client connection alive?
} HSE_SEND_HEADER_EX_INFO, * LPHSE_SEND_HEADER_EX_INFO;