Hi, If you have following:
UA A ====> Kamilio 1 UA B ====> Kamailio 2 With path you just make sure that all calls are routed to that server where UA initially registered. So if UA A is calling UA B, call will go in such way: UA A=> Kamilio 1 => Kamailio 2 => UA B. I hope I answered your question. With kind regards, 2016-02-03 12:18 GMT+02:00 Gholamreza Sabery <gr.sab...@gmail.com>: > Actually I think something is not clear here. Suppose I want to use two > Kamailio servers such that a client which is registered on server A is able > to call another client registered on server B. In this case I use DB_MODE > 3. Both servers have access to location database but sockets are non-local > and cleints are behind symmetric NATs.Now only the server on which the > client is registered and sent it's request to is able to respond(because of > symmetric NAT). Is it possible to implement this scenario using Path header? > > Regards > > On Wed, Feb 3, 2016 at 12:55 PM, Daniel Tryba <d.tr...@pocos.nl> wrote: > >> On Mon, Feb 01, 2016 at 09:17:41AM +0100, Federico Cabiddu wrote: >> > a solution in this case could be making usage of Path header ( >> > https://tools.ietf.org/html/rfc3327). >> > You have to load the path module >> > http://www.kamailio.org/docs/modules/devel/modules/path.html >> > and enabled its usage in registrar module >> >> Be warned that any stateful firewall or NATed client will not accept the >> messages from any other sipserver to that client. My solution was to use >> edge/loadbalancer proxies which add the Path header using >> add_path_received to store both the edge/loadbalancer ip and client >> source before passing the request to the backends (using dispatcher). >> >> Any backend will send messages based on the Path headers to the >> edge/loadbalancer and that will pass it to the client to appease >> statefull firewalls. >> >> >> >> _______________________________________________ >> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list >> sr-users@lists.sip-router.org >> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users >> > > > _______________________________________________ > SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list > sr-users@lists.sip-router.org > http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users > > -- Jurijs
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