Splunk for F5 Networks LTM v11 iRule

http://splunk-base.splunk.com/apps/50944/splunk-for-f5-networks

There is an install guide that I've followed very closely. I think that the problem is with the iRule that they suggest:

when CLIENT_ACCEPTED {

set client [IP::client_addr]

}

when HTTP_REQUEST {

set vhost [HTTP::host]:[TCP::local_port]

set url [HTTP::uri]

set method [HTTP::method]

set http_version [HTTP::version]

set user_agent [HTTP::header "User-Agent"]

set tcp_start_time [clock clicks -milliseconds]

set req_start_time [clock format [clock seconds] -format "%Y/%m/%d %H:%M:%S"]

set req_elapsed_time 0

set virtual_server [LB::server]

if { [HTTP::header Content-Length] > 0 } then {

set req_length [HTTP::header "Content-Length"]

HTTP::collect $req_length

} else {

set req_length 0

}

if { [HTTP::header "Referer"] ne "" } then {

set referer [HTTP::header "Referer"]

} else {

set referer -

}

}

when HTTP_REQUEST_DATA {

set req_elapsed_time [expr {[clock clicks -milliseconds] - $tcp_start_time}]

HTTP::release

}

when HTTP_RESPONSE {

set hsl [HSL::open -proto UDP -pool pool_syslog]

set resp_start_time [clock format [clock seconds] -format "%Y/%m/%d %H:%M:%S"]

set node [IP::server_addr]:[TCP::server_port]

set status [HTTP::status]

if { [HTTP::header Content-Length] > 0 } then {

set response_length [HTTP::header "Content-Length"]

} else {

set response_length 0

}

HSL::send $hsl "<190>|$vhost|$client|$method|\"$url\"|HTTP/$http_version|$user_agent|\"$referer\"|$req_start_time|$req_length|$req_elapsed_time|$node|$status|$resp_start_time|$response_length|$virtual_server"

}

I cannot get this to work as designed and I think it's because we're on v11

BIG-IP 11.1.0 Build 1943.0 Final

Has anyone figured out how to send this information to a logging server via an iRule (as suggested)?

Thanks

-Joe