[Serusers] How does t_relay() determine the IP/port to send amessage to?

[Java Rockx]

Yes. 10.3.0.221 is an alias.

I have a fix (or perhaps a hack) but I can't say if this is really the
proper way to do things.  This whole problem surfaced on our platform
that uses a virtual IP address (aka, VIP) and multiple SER proxies
behind firewall/load balancers.

We added a dummy interface to the sip proxy server with the interface
IP of the VIP. This seems to make ser happy, however we also tried
adding an alias with the VIP, but that didn't help.

Is there any downside to this?

Regards,
Paul

On Apr 2, 2005 3:02 AM, Greger V. Teigre <greger at teigre.com> wrote:
> I would say that for some reason your ser.cfg manipulated the ruri into
> SER's IP address.  AFAIK, t_relay() will always send to the current ruri
> (and branches). BTW, do you have 10.3.0.221 as an alias?
> g-)
> 
> Java Rockx wrote:
> > Hi All.
> >
> > If I have the following INVITE message, the message is sent to
> > 10.3.0.221:5060.
> >
> > How does t_relay() determine this? Is it because that is the IP in
> > the R-URI?
> >
> > I have a very odd situation where the INVITE is sent to an IP that is
> > the same as the SER proxy, but the R-URI is a SIP phone on the public
> > internet.
> >
> > This causes SER to send the message to iteself, which then causes
> > (uri==myself) to be FALSE and I just t_relay() it again in my default
> > handling.
> >
> > Does anyone know why ser might attempt to send a message to an IP that
> > is __not__ the R-URI? In this example I do have "sip.mycompany.com"
> > defined as an alias so I'm not sure what could be causing this loop.
> >
> >
> > U 2005/04/01 11:15:09.620910 66.90.46.29:33697 -> 10.3.0.221:5060
> > INVITE sip:3212514239 at sip.mycompany.com;user=phone SIP/2.0.
> > Via: SIP/2.0/UDP 172.31.130.83:33697;branch=z9hG4bK02b13d3f9557e284.
> >
> > U 2005/04/01 11:15:09.633247 10.3.0.221:5060 -> 66.90.46.29:33697
> > SIP/2.0 100 trying -- your call is important to us.
> > Via: SIP/2.0/UDP
> > 172.31.130.83:33697;branch=z9hG4bK02b13d3f9557e284;rport=33697;received=66.90.46.29.
> >
> > U 2005/04/01 11:15:09.633687 10.3.0.221:5060 -> 10.3.0.221:5060
> > INVITE sip:3212514239 at 172.31.130.110;user=phone SIP/2.0.
> > Record-Route:
> > <sip:3212514239 at 10.3.0.221:5060;nat=yes;ftag=946f5da2c0d8a21c;lr>.
> > Via: SIP/2.0/UDP 10.3.0.221;branch=z9hG4bK8ca2.b43bda21.0.
> > Via: SIP/2.0/UDP
> > 172.31.130.83:33697;rport=33697;received=66.90.46.29;branch=z9hG4bK02b13d3f9557e284.
> >
> > Regards,
> > Paul
> >
> > _______________________________________________
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> > serusers at lists.iptel.org
> > http://lists.iptel.org/mailman/listinfo/serusers
> 
>