[SR-Users] Does Kamailio support RFC5626 as Edge Proxy(or outbound proxy)

[Derrick Ding]

Hi Andreas and Ovidiu

Thanks for your reply, I will learn it.
I am the beginner of Kamalio from this week. Now I can make kamalio work
as  an proxy between UA and Asterisk Sip server. I have some basic
problem for outgoing call. I will create another topic for that. And
hope you will help. :-)

Thanks a again!!!!

Derrick

-----Original Message-----
From: sr-users-bounces at lists.sip-router.org
[mailto:sr-users-bounces at lists.sip-router.org] On Behalf Of Andreas
Granig
Sent: Wednesday, March 09, 2011 2:00 PM
To: sr-users at lists.sip-router.org
Subject: Re: [SR-Users] Does Kamailio support RFC5626 as Edge Proxy(or
outbound proxy)

Hi Derrick,

> Edge Proxy adds a Path header with a flow token
>    and includes the "ob" parameter when Processing Register Requests.
>  
> Eg:
>    Path: <sip:VskztcQ/S8p4WPbOnHbuyh5iJvJIW3ib at ep1.example.com;lr;ob>

http://kamailio.org/docs/modules/stable/modules_k/path.html and
http://kamailio.org/docs/modules/stable/modules_k/registrar.html#id29544
03
(and the two following params) might be sufficient if you're just
interested in traversing NAT via kamailio acting as a load-balancer.
It's an implementation of RFC3327, see
http://openser.org/pipermail/devel/2006-March/002142.html for a
real-world example.

It won't handle the "ob" header and various keep-alive mechanisms
proposed in RFC5626 though, but probably you can solve this with the
nat-ping features of nathelper or nat_traversal modules anyways?

Andreas