Undefined procedure error

iRules don't contain the surrounding "rule rule_name { }" section. That is how it is serialized to the configuration file. If you are adding it from the GUI, only use the event sections, the name is defined in a text box in the GUI. Also, you are missing an opening brace for your if statement.

 

 

This code should work

 

 

when HTTP_REQUEST {
  if { [regexp {.jpg$} [HTTP::uri]] || [regexp {.gif$} [HTTP::uri]] } {
    use pool parking_image_pool
  }
}

 

 

Since you are not really using regular expressions in your search, but are just looking for a string at the end, I'd suggest you replace the regexp with our "ends_with" operator.

 

 

when HTTP_REQUEST {
  if { ([HTTP::uri] ends_with ".jpg") || ([HTTP::uri] ends_with ".gif") } {
    pool parking_image_pool
  }
}

 

 

This will perform much better than a regular expression operation.

 

 

We recommend avoiding regular expressions when at all possible. In some cases it is unavoidable, but if it can be done with a string search command, it will definitely have less impact on the system.

 

 

-Joe