iRule to log HTTP request as Apache combined standard format

Hi - I am being a bit lazy and have not given you everything you neded but this should get you off to a good start;

when CLIENT_ACCEPTED {
   set hsl [HSL::open -proto UDP -pool $syslog_server_pool]    
}
when HTTP_REQUEST {
     Save request information for later logging
    set req_start [clock clicks -milliseconds]
    set clientip [IP::client_addr]
    set method [HTTP::method]
    set uri [HTTP::uri]
    set referer [HTTP::header Referer]
    set ua [HTTP::header User-Agent]
}
when HTTP_RESPONSE {
    set log_string "$clientip [clock format [clock seconds] -format "%d/%m/%Y %H:%M:%S %z"] [expr {[clock clicks -milliseconds] - $req_start}] \"$method $uri\" [HTTP::status] [HTTP::header Content-Length] \"$referer\" \"$ua\""
    log local0. $log_string

    HSL::send $hsl $log_string
}

Have commented out the HSL (to log to an external device) commands, and we are just logging to /var/log/ltm.