How to set keepalive check for regular expression

Question

Hi
We are using css110501 CSS.
Right now the keepalives on services are set using hash values.
But i want to change this keepalives to implement keepalives with regular expression checking.
Any Ideas?

Answer 1

The CSS supports it's own native scripting language that can be used to write keepalives among other things.
Here is an example of a script that I wrote to check a page for some specific text:
! Filename: ap-kal-statpage
! Parameters: None - must be coded in script
! Description:
! This script will attempt to connect to a host and
! "GET" an html page. The script checks the contents
! of the page for a particular string. If the string
! is found, the script passes.
! Failure Upon:
! 1. The correct arguments are not supplied.
! 2. The CSS is unable to connect to the host.
! 3. The string is not found in the page.
no echo
if ${ARGS}[#] "LT" "4"
echo "Usage: ap-kal-portlist \'Hostname Port Page String ...\'"
exit script 1
endbranch
set host "${ARGS}[1]"
set port "${ARGS}[2]"
set page "${ARGS}[3]"
set string "${ARGS}[4]"
set EXIT_MSG "Host ${host} not responding on TCP port ${port}."
socket connect host ${host} port ${port} tcp
socket send ${SOCKET} "GET ${page} HTTP/1.0\n\n"
set EXIT_MSG "String was not found."
socket waitfor ${SOCKET} "${string}" 200
socket disconnect ${SOCKET}
echo "String ${string} was found."
no set EXIT_MSG
exit script 0