Hi all,
...just to add that below change in "on_reply_route" will fix Contact header but RTP will still go to private IP address.
if((t_check_status("200|183|180") && search("Content_Type: application/sdp")) || search("Content-Type: application/sdp")) { fix_nated_contact(); }
and when request comes to this part in "on_reply_route":
if ((isflagset(5) || isbflagset(6)) && status=~"(183)|(2[0-9][0-9])") { force_rtp_proxy(); }
I'm getting following ERROR:
Jun 16 16:38:43 [22390] DBG:nathelper:force_rtp_proxy: proxy reply: 0 "RTP_PROXY_PUBLIC_ADDRESS" Jun 16 16:38:43 [22390] ERROR:nathelper:force_rtp_proxy: incorrect port 0 in reply from rtp proxy Jun 16 16:38:43 [22390] DBG:tm:t_should_relay_response: T_code=180, new_code=200
Thanks a lot
Dubravko
----- Original Message ---- From: Dubravko Caric dubravko_caric@yahoo.com To: kamailio users users@lists.kamailio.org Sent: Tuesday, June 16, 2009 2:25:03 PM Subject: [Kamailio-Users] ACK/BYE problem with NAT
Hi all,
I have a problem when calling from UAC#1 (public IP address) to UAC#2 (private IP address), call is dropping after 30 sec. STUN and ICE are disabled in UAC#2. Other way is working OK (UAC#2 --INVITE--> UAC#1), RTPProxy is in the middle,...
Kamailio is aware that UAC#2 is behind NAT and adds received filed on REGISTER.
MySQL location table: contact received sip:bob@10.2.4.18:1025;rinstance=24c6e191484e570a sip:UAC#2_PUBLIC_IP_ADDRESS:55671
Why proxy is not aware that UAC#2 is behind NAT (for BYE and ACK) when call is initiated by UAC#1 and thus sends ACK/BYE to private IP address? Shouldn't Contact header be rewriten with NAT address/port and also a "c" filed in SDP with RTPProxy address? fix_nated_contact() sholud fix contact header for transaction-starting messages like ACK and BYE...
I'm using kamailio 1.5.1-tls and standard kamailio.cfg (to be sure that I'm not using my cfg which could be faulty)...
Thanks a lot
Dubravko
INVITE: *working OK* # U UAC#1_PUBLIC_IP_ADDRESS:24354 -> KAMAILIO_PUBLIC_IP_ADDRESS:5958 INVITE sip:bob@example.com SIP/2.0....
U UAC#1_PUBLIC_IP_ADDRESS:5958 -> UAC#2_PUBLIC_IP_ADDRESS:55671 INVITE sip:bob@10.2.4.18:1025;rinstance=24c6e191484e570a SIP/2.0..
ACK (and BYE): *not working* # U UAC#1_PUBLIC_IP_ADDRESS:24354 -> KAMAILIO_PUBLIC_IP_ADDRESS:5958 ACK sip:bob@10.2.4.18:1025;rinstance=24c6e191484e570a SIP/2.0.... # U KAMAILIO_PUBLIC_IP_ADDRESS:5958 -> UAC#2_PRIVATE_IP_ADDRESS:1025 ACK sip:bib@10.2.4.18:1025;rinstance=24c6e191484e570a SIP/2.0....
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