On Mon, Nov 28, 2016 at 01:00:37PM +0200, Vladyslav Zakhozhai wrote: > UAC == SIP/TLS ==> Kamailio == SIP/UDP ==> FreeSWITCH > > My main problem is in Contact header of SIP packet which passes through > Kamailio SIP proxy and remains unmodified. > > For example, REGISTER request. There is FreeSWITCH backend which is > registrar server as well. UAC send REGISTER request to it through Kamailio > SIP proxy via SIP/TLS. This request dispatches to backend(s) by Kamailio > with dispatcher module. Backend does not configured to support TLS.
... > As a result FreeSWITCH tries to originate call over SIP/TLS and it fails > because FreeSWITCH does not configured to work with TLS. > > I want to understand what is correct workaraound of this issue. Do I need > to modify Contact header manually on kamailio host and this is right > approach? Or kamailio in case of correct config rewrites this header itself? I'm doing something similar but with kamailio instead of freeswitch. My solution is to use Path on the frontend/loadbalancer. Contact headers for the REGISTERs are passed unaltered, location uses Path (with received parameter which contains the transport) to contact the correct loadbalancer/frontend over UDP and lets the fb/lb contact the UA with the correct transport and the correct ip:port combo. If freeswitch has support for this, look into that. _______________________________________________ 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
