12 Dec
2006
12 Dec
'06
1:25 p.m.
Yes, this is a known issue, but the solution depends on how you optimize
you rtp handling (active media). The INVITE from your GW will not be
NATed and as the INVITE is loose route, no lookup("location") is done to
see if the dst UA is NATed. However, this is what the nat=yes flag is
supposed to be used for, to mark the dialog as NATed. Thus, the Route
set from your GW should contain nat=yes and this will cause the right
flag to be set for the INVITE.
Doing it in the onreply route should not work, because you need to make
sure that both the INVITE from the GW and the OK from the UA are handled
as rtp proxy forked. I'm not sure why it works, maybe you force rtp
proxy for too many calls? (calls to the GW from NATed UAs except
symmetric NATs can go without rtp proxy).
g-)
Natambu Obleton wrote:
After a crap load of tracing and putting log("I am here\n") all over
the config file I think I may of gotten it working?
I started with the gettingstarted gw-pstn.cfg file and made this change...
I edited my onreply route[1] to setflag(6)..
onreply_route[1] {
log("******************************ONREPLY ROUTE[1]\n");
Added: if (!search("^Contact:[ ]*\*") &&
client_nat_test("7")) {
Added: log("******************************ONREPLY
ROUTE[1] set_flag\n");
Added: setflag(6);
Added: }
if ((isflagset(6) || isflagset(7)) &&
(status=~"(180)|(183)|2[0-9][0-9]")) {
log("******************************ONREPLY ROUTE[1]
flag_set\n");
if (!search("^Content-Length:[ ]*0")) {
use_media_proxy();
log("******************************ONREPLY
ROUTE[1] use_media_proxy\n");
};
};
if (client_nat_test("1")) {
log("******************************ONREPLY ROUTE[1]
fix_nated_contact\n");
fix_nated_contact();
};
}
Natambu Obleton
Network Engineer
FastTrack Communications
nobleton(a)fasttrackcomm.net <mailto:nobleton@fasttrackcomm.net>
(970) 247-3366 office
(970) 247-2426 fax
------------------------------------------------------------------------
*From:* serusers-bounces(a)lists.iptel.org
[mailto:serusers-bounces@lists.iptel.org] *On Behalf Of *Natambu Obleton
*Sent:* Monday, December 11, 2006 10:19 AM
*To:* serusers(a)iptel.org
*Subject:* [Serusers] reinvite problem...
Ok. I have SER working with mediaproxy and it rewrites the requests to
goto the Mediaproxy server as it should, but after a call has been up
for a bit.. it gets another invite from my PSTN gateway and when this
invite comes through it doesn't rewrite the media addresses why?
My config:
http://laplata.fasttrackcomm.net/ser_cfg.txthttp://laplata.fasttrackcomm.ne…
<http://laplata.fasttrackcomm.net/ser_cfg.txthttp:/laplata.fasttrackcomm.net/ser_cfg.txt>
My transaction log:
http://laplata.fasttrackcomm.net/translog.txt
About ¾'s of the way down you will see where 206.123.213.84 sends
another invite for the call and SER doesn't change the media
information on it. Thanks for your help.
Natambu Obleton
Network Engineer
FastTrack Communications
nobleton(a)fasttrackcomm.net <mailto:nobleton@fasttrackcomm.net>
(970) 247-3366 office
(970) 247-2426 fax
------------------------------------------------------------------------
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