Hi,

Thanks for picking this up.

There are no revert_uri()s in my kamailio.cfg.

Here's my test:

I send invite to "*26@vc2.connection-telecom.com" from my client on 172.16.230.1.

My Kamaillio config first sends the request upstream

That challenges and eventually a second authenticated invite is sent.

upstream sends back a 500

In failure_route MANAGE_FAILURE we call route block TRYASTERISK which pushes the call to 127.0.0.1:5070

This is in the logic below.

What I find is that if the call to Asterisk also fails I come back again into TRYASTERISK and $rd for this branch still points to the original upstream destination (vc2.connection-telecom.com).

It seems to be harmless and another invite isn't actually sent to Asterisk. Don't really get that so I apologise if I'm being stupid.

I've attached my kamailio.cfg and also the trace you requested.

Thanks for any pointers.

Steve

On 4 September 2013 12:12, Daniel-Constantin Mierla <miconda@gmail.com> wrote:

Hello,

$rd is the domain from the latest r-uri, not from original r-uri. Can you check to be sure there is no revert_uri() used somewhere around?

If still a problem, then load debugger module, set its parameter cfgtrace to 1 and send the log messages here to see what actions are executed, maybe some revert the uri inside.

Cheers,
Daniel

On 8/24/13 8:05 PM, Steve Davies wrote:
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
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