[Users] get_redirects("*"), serialize_branches(0), next_branches() not working for me

[Greg Fausak]

I'm trying to play around with the current cvs head but can't get it to
work.  I wonder if somebody could give me a hint!


I built a redirect server:
It basically does:

rewritehost("ab5350.node-1.com");
sl_send_reply("302", "Redirect");

I forward to the redirect server setting up a failure block:

                if(is_method("INVITE"))
                {
                        _QLOG(L_INFO, OUTBOUNDCALL, OUT);

                        t_on_failure("3");

                        record_route();
                        setflag(1);
                        setflag(2);

                        rewritehostport(_QSTR
(REDIRECTOBGATEWAYIP:REDIRECTOBGATEWAYPORT));

                        if(!t_relay())
                        {
                                sl_reply_error();
                        }
                }

The response below comes back from my redirect server:

SIP/2.0 302 Redirect
Via: SIP/2.0/UDP 12.46.104.47;branch=z9hG4bKa86.09801851.0
Via: SIP/2.0/UDP 12.46.104.62:5061;branch=z9hG4bKa86.191c2c81.0
Via: SIP/2.0/UDP 12.46.104.59;branch=z9hG4bKa86.dafc0771.0
Via: SIP/2.0/UDP 71.252.176.37:5060;branch=z9hG4bK-d0702751
From: +19722200434 <sip:+19722200434 at var-2.com>;tag=3a553a2b9373c699
To: <sip:2143357976 at var-2.com>;tag=5531b0101f56e37a4889ece4b0eb40fa.417f
Call-ID: f27483a5-50532031 at 71.252.176.37
CSeq: 101 INVITE
Contact: sip:+12143357976 at ab5350.node-1.com:5060
Content-Length: 0

My failure_route block picks up the routing:

failure_route[3]
{
        _QLOG(L_WARN, FAILUREROUTE, here we are);

        if(status =~ "3[0-9][0-9]")
        {
                _QLOG(L_WARN, FAILUREROUTE, status is 3xx);
                get_redirects("*");
                serialize_branches(0);
        }
        if(next_branches())
        {
                _QLOG(L_WARN, FAILUREROUTE, next branch);
                t_on_failure("3");
                t_relay();
        }
        _QLOG(L_WARN, FAILUREROUTE, no branches left);
        if(!t_reply("404", "Not Found"))
        {
                _QLOG(L_WARN, FAILUREROUTE, Error);
        }
}

My syslog shows QLOG messages.
I see the 'status is 3xx' message, which shows the
next command to be get_redirects("*");

The next output I see in my syslog is 'no branches left', which
indicates that the
serialize_branches(0) and next_branches() aren't working as I expected.

I've also tried getting rid of the serialize_branches and next_branches and just
doing a t_relay() after the get_redirects(), that doesn't work either.

Since I'm trying to simulate the redirect server, and the redirect
client, I'm sure I
got one of them wrong.  Can somebody give me a hint?

Thanks!

-g



-- 
Greg Fausak
greg at thursday.com