wlnode function

This is an interesting rule. The interesting aspect of it is that you have re-implemented persistence using the session table. Way to go.

However, a slightly simpler approach may be to just do the following with persistence:

  
  rule WeblogicJSessionPersist {  
     when HTTP_RESPONSE {  
        if { [HTTP::cookie exists "JSESSIONID"] } {  
           persist add uie [HTTP::cookie "JSESSIONID"]  
        }  
     }   
     when HTTP_REQUEST {  
        set jsess [findstr [HTTP::uri] "jsessionid" 11 ";"]  
        if { $jsess != "" } {  
           persist uie $jsess  
        }  
     }  
  }