[SR-Users] Issue with 4.2.0 and nathelper and/or rtpproxy

[Amit Patkar]

Hi

You should compare this line in your configuration file.

if (nat_uac_test("*18*")) {

It may be using different parameters.

*Regards,*

Amit


On 11/18/2014 5:23 PM, Igor Potjevlesch wrote:
>
> Hello,
>
> I can reproduce the issue on a pre-production system.
>
> So, I downgraded to 4.1.5.
>
> Here is the difference:
>
> The INVITE comes into NATDETECT:
>
> route[NATDETECT] {
>
>         xlog("ENTERING NATDETECT routes\n");
>
> #!ifdef WITH_NAT
>
>         force_rport();
>
>         if (nat_uac_test("18")) {
>
>                 if (is_method("REGISTER")) {
>
>                         fix_nated_register();
>
>                 } else {
>
>                         add_contact_alias();
>
>                 }
>
>                 setflag(FLT_NATS);
>
>                  xlog("NAT_UAC_TEST OK\n");
>
>         }
>
> #!endif
>
>         return;
>
> }
>
> With Kamailio 4.2.0, the NAT_UAC_TEST returns true whereas with 4.1.5 
> returns false.
>
> I also look at the "force_rport". I'm not sure if it's related, but 
> with 4.2.0, the Via looks like:
>
> Via: SIP/2.0/UDP 
> PST_GW:5060;received=PST_GW;rport=5060;branch=z9hG4bK-34d5-1416308856-4847-441\r\n
>
> In 4.1.5:
>
> Via: SIP/2.0/UDP 
> PST_GW:5060;rport=5060;branch=z9hG4bK-2e3d-1416311184-4886-146\r\n
>
> The received parameters is not added. Note that PSTN_GW refers to a 
> public IP address (out of RFC1918 and Carrier Grade NAT).
>
> Regards,
>
> Igor.
>
> *De :*Igor Potjevlesch [mailto:igor.potjevlesch at gmail.com]
> *Envoyé :* mardi 18 novembre 2014 11:43
> *À :* sr-users at lists.sip-router.org
> *Objet :* Issue with 4.2.0 and nathelper and/or rtpproxy
>
> Hello,
>
> Since I done the upgrade of Kamailio into 4.2.0, there are, at least, 
> one new case where the RTPProxy is launched.
>
> When I got an INVITE from my PSTN Gateway, for unknown reason (and not 
> for all calls), Record-Route is append with nat=yes. I looked into an 
> old trace and this behaviour didn't exist.
>
> What could have changed that can explain this?
>
> Regards,
>
> Igor.
>
>
>
> _______________________________________________
> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
> sr-users at lists.sip-router.org
> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users


-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.sip-router.org/pipermail/sr-users/attachments/20141118/26fe6ee7/attachment.html>