Hi, I'm from ser-userlist with a good news and testing results :) FreeSWITCH do honor path header and will back responses and will originate calls to/through SIP proxy IP address if it is in the path. Before relaying in Kamailio you need put add_path or add_path_received (both worked fine for me). FreeSWITCH will add it to Contact header: Contact: "" <sip:user_name@user_ip :49335;transport=tls;fs_path=sip%3Akamailio_ip%3Blr> No manual manipulations on Contact header is needed from kamailio side (as well as from FreeSWITCH side). But be aware of correct handling SIP requests (i.e. INVITEs) from FreeSWITCHes. For example my FreeSWITCHes backends are in dispatcher table (sip:IP_ADDR:UDP_PORT). And I've checked it with ds_is_from_list in kamailio. But FreeSWITCH originates INVITE to kamailio from IP_ADDR:RANDOM_PORT. In this case ds_is_from_list fails :( Now I'm checking is there mistakes in my configs or this is normal usecase for FreeSWITCH (I did not mention it earlier). 2016-11-25 13:15 GMT+02:00 Vladyslav Zakhozhai <v.zakhozhai@gmail.com>:
David,
yes of course I'll be back with solution here :) But I'm not sure when exactly.
2016-11-24 12:30 GMT+02:00 David Villasmil <david.villasmil.work@gmail.com
:
Hello,
Please come back with the solution when you have it. It should be interesting for people using kamailio/freeswitch.
Regards,
David
On Wed, Nov 23, 2016 at 10:37 AM Vladyslav Zakhozhai < v.zakhozhai@gmail.com> wrote:
Alexandru, thank you for the answer. I think you've given me right direction to investigate.
As you've mentioned this is really kamailio issue/question. So I'm moving to sr-users list.
2016-11-22 13:03 GMT+02:00 Alexandru Covalschi <568691@gmail.com>:
Do you have set_contact_alias or add_contact_alias in Kamailio? Anyways you're doing something wrong as AFAIK Kamailio translates contact header to udp automatically. You should try to post on sr-users list.
2016-11-22 12:33 GMT+02:00 Vladyslav Zakhozhai <v.zakhozhai@gmail.com>:
Hi,
I'm trying to understand what is the best or suitable approach to the following use case. Let me simplify thing a little bit.
Suppose we have one FreeSWITCH registrar behind SIP proxy (kamailio). I'd like to offload SSL/TLS encryption/decryption to SIP proxy:
REGISTER:
Request: UAC == SIP/TLS ==> Kamailio == UDP ==> FreeSWITCH:50 Reply: UAC <== SIP/TLS == Kamailio <== UDP == FreeSWITCH
INVITE: UAC1 == SIP/TLS ==> Kamailio == UDP == > FreeSWITCH == UDP ==> Kamailio == SIP/TLS ==> UAC2
(FreeSWITCH uses kamailio as outbound proxy with fs_path tag appended in dialplan).
The main problem is in Contact header which contains transport=tls and we can see it in FreeSWITCH console:
User: user@domain.com Contact: "" <sip:user@UAC_IP:57976;transport=tls> Status: Registered(TLS)(unknown) EXP(2016-11-22 10:16:59) EXPSECS(108) IP: SIP_PROXY_IP Port: 5060
When FreeSWITCH sends INVITE to UAC2 (during call) it tries to establish TLS session to UAC2. It fails because there is no TLS-enabled sofia profiles in the config of FreeSWITCH.
I have only one solution in my mind: rewrite transport tag in Contact header on SIP proxy (transport=udp to FreeSWITCH, and transport=tls to UAC).
I'd like to know it this solution ok or there is more elegant solutions.
I've tried appending tag transport=udp in FreeSWITCH's dialplan but no success.
Thank you in advance.
-- С уважением, Владислав Захожай
____________________________________________________________ _____________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- Alexandru Covalschi VoIP engineer and system administrator tel: +37367398493
____________________________________________________________ _____________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- С уважением, Владислав Захожай
____________________________________________________________ _____________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
_________________________________________________________________________ Professional FreeSWITCH Consulting Services: consulting@freeswitch.org http://www.freeswitchsolutions.com
Official FreeSWITCH Sites http://www.freeswitch.org http://confluence.freeswitch.org http://www.cluecon.com
FreeSWITCH-users mailing list FreeSWITCH-users@lists.freeswitch.org http://lists.freeswitch.org/mailman/listinfo/freeswitch-users UNSUBSCRIBE:http://lists.freeswitch.org/mailman/options/freeswitch-users http://www.freeswitch.org
-- С уважением, Владислав Захожай
-- С уважением, Владислав Захожай