[Serusers] reinvite problem...

[Greger V. Teigre]

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 at fasttrackcomm.net <mailto:nobleton at fasttrackcomm.net>
>
> (970) 247-3366 office
>
> (970) 247-2426 fax
>
>  
>
> ------------------------------------------------------------------------
>
> *From:* serusers-bounces at lists.iptel.org 
> [mailto:serusers-bounces at lists.iptel.org] *On Behalf Of *Natambu Obleton
> *Sent:* Monday, December 11, 2006 10:19 AM
> *To:* serusers at 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.net/ser_cfg.txt 
> <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 at fasttrackcomm.net <mailto:nobleton at fasttrackcomm.net>
>
> (970) 247-3366 office
>
> (970) 247-2426 fax
>
>  
>
>  
>
> ------------------------------------------------------------------------
>
> _______________________________________________
> Serusers mailing list
> Serusers at lists.iptel.org
> http://lists.iptel.org/mailman/listinfo/serusers
>   
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