Gathering Statistics

Well, you can certainly log it...

Add the log command to your event and you'll log the desired information for perusal later:

when HTTP_REQUEST {
  if {([HTTP::version] == "1.0") or ([HTTP::version] == "0.9")} {
    log local0. "HTTP version is [HTTP::version]"
  }
}

-Colin

Other options for storing data would be in global variables, lists, or arrays and then build an iRule that will use HTTP::respond to return the formatted results. Or you could try out the new "stats" profile introduced in 9.2. Here you can create your own statistics and fill the values from within the iRule.

 

 

citizen_elah threw up a great post on how he used it to track status codes.

 

 

http://devcentral.f5.com/Default.aspx?tabid=28&view=topic&forumid=5&postid=4925

 

Click here

 

 

-Joe

Taking a step back though, if you just want to track status codes and request versions, there's no need for an irule.

b http

should give you the stats you're looking for.

Thanks for the replies.

 

 

It is working as it should. However, it is sending syslog messages for every single object that is requested on a single page, which isnt going to give us accurate stats obviously, we'd prefer only one syslog message send per visitor (assuming they match the if statement)

 

 

Make sense?

Interesting. Perhaps you could add another check in your if to work around this?

You could check for the first HTTP_REQUEST event fired on each connection:

when RULE_INIT {
  set count 0
}
when HTTP_REQUEST {
  incr count
  if { $count == 1 } {
    if {([HTTP::version] == "1.0") or ([HTTP::version] == "0.9") } {
      log local0. "HTTP version is [HTTP::version]"
    }
  }
}
when CLIENT_CLOSED {
  set count 0
}

Something like that might get you where you need to go. You might have to play around with it a bit.

-Colin

Or just pick one object on the page to log stats on, and don't log if the client is presenting an "If-Modified-Since" header in order to catch re-visitors.