iRule Javascript call?

Hi,

 

 

Can you clarify what you're trying to achieve? Do you want to inject javascript in the response content? Or do you want to actually force LTM to make a request to a Javascript file and send that as the response to any request containing /FooPage/ in the URI?

 

 

Thanks, Aaron

Hi Aaron,

 

 

Actually-you are correct-injecting it into response is what I wanted and I believe I have found how to do that based upon syntax examples and a Google Analytics example found here.

 

 

I guess my question now is (as I am, obviously, not overly familiar with iRule usage):

 

 

I could not properly nest the HTTP_RESPONSE_DATA code within a HTTP_REQUEST looking for specific uri info, does the iRules function such that if it misses the REQUEST filter, that the next WHEN statement is bypassed as well as it is part of the same iRule or will other traffic be affected by that 2nd statement injecting the js?

 

 

Sorry if this is lame-I haven't had need previously to use these in such a manner. I do appreciate any info.

 

 

I will likely run this with simple logging as the actions to see what turns up.

 

 

Thanks again!

 

The URI isn't saved for response events. So you could check the URI in HTTP_REQUEST and then set a variable to 1 to track whether to inject the javascript in the response:

when HTTP_REQUEST {

    Check if some URI property is true
   if {[string tolower [HTTP::path]] contains "/foopage/"}{
       Track that we'll inject the js in the response
      set inject_js 1
   } else {
       Track that we won't inject the js in the response
      set inject_js 0
   }
}
when HTTP_RESPONSE {
    Check whether we're injecting the js in the response payload
   if {$inject_js==1}{
       Do it...
   }
}

Also note that it would probably be more efficient to use a stream profile to insert the javascript. See this post for a related example:

http://devcentral.f5.com/Default.aspx?tabid=53&aff=5&aft=1144860&afv=topic&afpgj=1

Aaron

Thanks again Aaron-for taking the time to respond. It is very much appreciated.