Irule to set expires headers for static conent

Ok I found reference in the following article that http::uri function is not allowed in http_response. It also shows that a session variable can be created to move the data you want into the response. I'm still working on this and it probably is not quite syntactically correct but let me know if you guy see anything glaring or if I seem to be on the right path.

 

 

http://devcentral.f5.com/wiki/default.aspx/iRules/FileNotFoundHandler.html

 

 

 

when RULE_INIT {

 

set OUTBOUND_URI $HTTP_URI

 

}

 

 

When HTTP_REQUEST {

 

set HTTP_URI [HTTP::uri]

 

}

 

 

when HTTP_RESPONSE {

 

if { [matchclass [OUTBOUND_URI] ends_with $::images]} {

 

set cachetime 86400

 

HTTP::header insert JeffTest "[clock format [expr ([clock seconds]+$cachetime)] -format "%a, %d %h %Y %T GMT" -gmt true]"

 

}