Tracking session in soap header?

All,

 

Any suggestions on creating an I-rule that addresses if the string I am searching for is blank, null,or not even an integer.I also was thinking that this would igonore persistence if the above condition is met.

 

 

This is what i have so far

 

when HTTP_REQUEST {

 

collect the payload containing the POST data content length is to tell LTM to stop collecting data

 

HTTP::collect [HTTP::header Content-Length]

 

}

 

when HTTP_REQUEST_DATA {

 

look for persistence data beginning the 16th character following the 'visitorID "<" char

 

and follow existing persistence record or create a new one

 

 

set visitorId [ string trim [findstr [HTTP::payload] "visitorId" 16 ""]]

 

if {string is integer -strict $visitorId}

 

{persist uie $visitorId

 

log local0. "[findstr [HTTP::payload] "visitorId" 16 ""]"

 

}

 

 

}