Hi Klaus Thanks for posting the working solution.
You are right that mhomed=1 won't help if the sockets both have same IP address. Though I think if you used it with two different IPs and the correct routing tables on the OS then it would work. In any case your solution is a good one. Richard On 7 January 2013 15:45, Klaus Darilion <klaus.mailingli...@pernau.at>wrote: > Hi all! > > > On 04.01.2013 18:57, Ovidiu Sas wrote: > >> Hello Klauss, >> >> I use record_route_preset for this kind of scenarios: >> http://kamailio.org/docs/**modules/3.3.x/modules_k/rr.**html#id2550086<http://kamailio.org/docs/modules/3.3.x/modules_k/rr.html#id2550086> >> That was the main reason that I enhanced record_route_preset with the >> second parameter (see the Note on string2). >> >> I haven't tried your idea with two sockets. Let us know if it's working. >> If you need to use the same port on the internal and external >> interface, you could add a new IP to the host and listen on two >> sockets on the same port and force the socket when sending a request >> out. >> listen=udp:10.10.0.2 >> listen=udp:10.10.0.3 advertise pu.bl.ic.ip >> > > I did some basic tests (incoming, outgoing, on/off-hold). The service > provider's SIP trunk was an Asterisk with NAT traversal disabled. Kamailio > was NATed 1:1 to the public IP address (exclusively, without port > translation). I tested Kamailio only doing near-end NAT-traversal (taking > care of its own NAT). > > I used two IP addresses for the two sockets, but I must works also with a > single IP address and different ports. > > Conclusion: works :-) > > Following is the setup how I tested it (if you need to add far-end NAT > traversal (SIP clients behind another NAT) then it will more complex). > > regards > Klaus > > > # Service Provider for SIP Trunk: 5.5.5.5 > # public IP address of Kamailio/rtpproxy: 3.3.3.3 > # rtpproxy binds to 10.10.0.3 > listen=udp:10.10.0.2 > listen=udp:10.10.0.3 advertise 3.3.3.3:5060 > mhomed=0 > > route[RELAY] { > if (src_ip == 5.5.5.5) { > force_send_socket("10.10.0.2")**; > rtpproxy_manage("","10.10.0.3"**); > } else { > force_send_socket("10.10.0.3")**; > rtpproxy_manage("","3.3.3.3"); > } > ... > t_relay(); > } > > > onreply_route { > if (src_ip == 5.5.5.5) { > force_send_socket("10.10.0.2")**; > rtpproxy_manage("","10.10.0.3"**); > } else { > force_send_socket("10.10.0.3")**; > rtpproxy_manage("","3.3.3.3"); > > } > } > > > ______________________________**_________________ > 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<http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users> >
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