Pseudo-variables and branches - sr-users

24 Aug 2013

Hi -

Can someone help me understand how pseudo-variables interact with branches?

I've written this logic in my failure route to do a reroute of calls if the
primary destination fails:

        if ( is_method("INVITE") && !t_check_status("407")
&& ($rd !=
"127.0.0.1") ) {
                # Maybe should also check its not just a Busy or similar
                xlog("L_NOTICE","SLD: INVITE failed $rm ($mt / $rs $rr):
$ci::$ft; try via asterisk instead\n");
                append_branch("sip:$rU@127.0.0.1:5070");
                send_reply("181", "Rerouting call via local
failover");
                $avp(senttoast) = 1;
                if (!t_relay()) {
                        sl_reply_error();  # or reply_error ?
                }

I'm trying to check if the call was already rerouted - by looking at $rd.
 But in fact I find that $rd keeps the domain from the ORIGINAL invite even
if the call that just failed was the one to 127.0.0.1:5070 .

So I'm obviously missing something about how pseudo-variables interact with
the branching etc.

Thanks,
Steve

-- 
Steve Davies: Technical Director, Connection Telecom (Pty) Ltd
Email is preferred, but: Phone: 0878200200