iRule: Adjust idle timeout for 1 particular call

Hello,

I had a few questions if anyone has implemented or tried this I know there's a wiki link for it, link, However I wanted to know if the sample request would open the idle time out for ALL requests to the box during that window we set or if it will only set for that one request and all subsequent calls after will be set to the default of 300 seconds.

Also would it help if we added an elseif? if so would that then terminate the request that's already in process of the call?

sample code(s) is as such

when HTTP_REQUEST {
 if {[HTTP::uri] starts_with "/portal" } {
  IP::idle_timeout 7200
  }
}

when HTTP_REQUEST {
 if {[HTTP::uri] starts_with "/portal" } {
      IP::idle_timeout 7200
   }
 else {
      IP::idle_timeout 300
}