Hi Carsten,
no is not about just rewriting the SDP.
i need my UACs media to relay on my rtpproxy
currently my UACs are sending the media to a private ip.
my rtpproxy is in behind nat and UACs behind another nat.
On Wed, Jul 6, 2011 at 3:15 PM, Carsten Bock <carsten(a)ng-voice.com> wrote:
Hi MingHon,
what do you want to achieve? If it is only about rewritibng the SDP,
then this will help you:
fix_nated_sdp("10", "<your-ip-here>");
=> 0x02 rewrite media IP address (c=) with the provided IP address
=> 0x08 rewrite IP from origin description (o=) with the provided IP
address
Kind regards,
Carsten
2011/7/6 MingHon <gminghon(a)gmail.com>om>:
hello List,
anyone could give some hints??
im still unable to rewrite the sdp body.
hope to hear from you all.
thanks
--
Regards,
MingHon
On Tue, Jul 5, 2011 at 3:49 PM, MingHon <gminghon(a)gmail.com> wrote:
>
> Hi List,
> im facing an issue that my kamailio proxy did not replace the ip
> address
> in the invite and 200OK sdp body.
> my rtpproxy is running: rtpproxy -l 192.168.1.3 -u:*:7722 -u user
> my kamailio is listening on 192.168.1.3, also
> define: advertised_address="175.136.223.112"; & advertised_port=5060;
> and my asterisk is on 192.168.1.23.
> sip signalling and rtp port forwarded to kamailio.
> uacs from another nat register successfully.
> if i put 2 lines of force_rtp_proxy("fcow","175.136.223.112");
> i will get double ip addr in c and o but kamailio ignore my ip addr.
> example i will get
> c=IN IP4 192.168.1.3192.168.1.3
> here is part of my simple script.
> hope you can help.
> thank you very much.
> ---------------cfg-------------------
> route[RTPPROXY] {
> #!ifdef WITH_NAT
> if (is_method("BYE")) {
> unforce_rtp_proxy();
> } else if (is_method("INVITE")){
> force_rtp_proxy("fcow","175.136.223.112");
> #force_rtp_proxy("fcow","175.136.223.112");
> xlog("L_INFO","offer");
> }
> if (!has_totag()) add_rr_param(";nat=yes");
> #!endif
> return;
> }
> --------------------------------------
> and here is the wireshark for uac INVITE and OK.
> -----------INVITE-----------------
> ve0
> EE;p9INVITE sip:102@192.168.2.132:5062 SIP/2.0
> Record-Route: <sip:192.168.1.3;lr=on;ftag=as032358a3;nat=yes>
> Via: SIP/2.0/UDP 192.168.1.3;branch=z9hG4bK09d5.c5e9e8d2.0
> Via: SIP/2.0/UDP 192.168.1.23:5080;branch=z9hG4bK71c27189;rport=5080
> Max-Forwards: 69
> From: "101" <sip:102@aextddns.dyndns.info>;tag=as032358a3
> To: <sip:102@192.168.1.3:5060>
> Contact: <sip:102@192.168.1.23:5080>
> Call-ID: 416f6e09674ae9671bb7144a1cb11137(a)aextddns.dyndns.info
> CSeq: 102 INVITE
> User-Agent: Asterisk PBX 1.6.2.18
> Date: Tue, 05 Jul 2011 07:20:53 GMT
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY,
> INFO
> Supported: replaces, timer
> Content-Type: application/sdp
> Content-Length: 327
> v=0
> o=root 1639709788 1639709788 IN IP4 192.168.1.3
> s=Asterisk PBX 1.6.2.18
> c=IN IP4 192.168.1.3
> t=0 0
> m=audio 10072 RTP/AVP 0 3 8 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:3 GSM/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=silenceSupp:off - - - -
> a=ptime:20
> a=sendrecv
> a=nortpproxy:yes
> -----------200OK---------------
> e90
> ElE;pX4tSIP/2.0 200 OK
> Via: SIP/2.0/UDP
>
> 192.168.2.200:5062;rport=2788;received=175.138.21.31;branch=z9hG4bK2086380416
> Record-Route: <sip:192.168.1.3;lr=on;ftag=1796959074;nat=yes>
> From: "101" <sip:101@aextddns.dyndns.info>;tag=1796959074
> To: <sip:102@aextddns.dyndns.info>;tag=as2e4c0125
> Call-ID: 1985782590(a)192.168.2.200
> CSeq: 21 INVITE
> Server: Asterisk PBX 1.6.2.18
> Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY,
> INFO
> Supported: replaces, timer
> Contact: <sip:102@192.168.1.23:5080>
> Content-Type: application/sdp
> Content-Length: 286
> v=0
> o=root 403900934 403900934 IN IP4 192.168.1.23
> s=Asterisk PBX 1.6.2.18
> c=IN IP4 192.168.1.23
> t=0 0
> m=audio 14420 RTP/AVP 0 8 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:101 telephone-event/8000
> a=fmtp:101 0-16
> a=silenceSupp:off - - - -
> a=ptime:20
> a=sendrecv
> ------------------------------------
> My kamailio log.
> -----------LOG------------------
> DEBUG: rtpproxy [rtpproxy_funcs.c:148]: type <application/sdp> found
> valid
> DEBUG: rtpproxy [rtpproxy.c:2188]: proxy reply: 10070 192.168.1.3
> INFO: <script>: offer
> -------------------------------------
> double force_rtp_proxy
> --------kamailio -> asterisk [INVITE]---------
> Pyi-}E7V@:#pINVITE sip:102@aextddns.dyndns.info SIP/2.0
> Record-Route: <sip:192.168.1.3;lr=on;ftag=640933430;nat=yes>
> Via: SIP/2.0/UDP 192.168.1.3;branch=z9hG4bK89a5.53e9f766.0
> Via: SIP/2.0/UDP
>
> 192.168.2.200:5062;rport=2788;received=175.138.21.31;branch=z9hG4bK1673765648
> From: "101" <sip:101@aextddns.dyndns.info>;tag=640933430
> To: <sip:102@aextddns.dyndns.info>
> Call-ID: 1909950509(a)192.168.2.200
> CSeq: 21 INVITE
> Contact: <sip:101@175.138.21.31:2788>
> Content-Type: application/sdp
> Allow: INVITE, INFO, PRACK, ACK, BYE, CANCEL, OPTIONS, NOTIFY,
> REGISTER,
> SUBSCRIBE, REFER, PUBLISH, UPDATE, MESSAGE
> Max-Forwards: 69
> User-Agent: T20 9.41.0.80
> Allow-Events: talk,hold,conference,refer,check-sync
> Content-Length: 334
> v=0
> o=20073 20073 IN IP4 192.168.1.3192.168.1.3
> s=SDP data
> c=IN IP4 192.168.1.3192.168.1.3
> t=0 0
> m=audio 1006410064 RTP/AVP 0 8 18 9 101
> a=rtpmap:0 PCMU/8000
> a=rtpmap:8 PCMA/8000
> a=rtpmap:18 G729/8000
> a=rtpmap:9 G722/8000
> a=fmtp:101 0-15
> a=rtpmap:101 telephone-event/8000
> a=sendrecv
> a=nortpproxy:yes
> a=nortpproxy:yes
> -----------LOG------------------
> DEBUG: rtpproxy [rtpproxy_funcs.c:148]: type <application/sdp> found
> valid
> DEBUG: rtpproxy [rtpproxy.c:2188]: proxy reply: 10068 192.168.1.3
> DEBUG: rtpproxy [rtpproxy_funcs.c:148]: type <application/sdp> found
> valid
> DEBUG: rtpproxy [rtpproxy.c:2188]: proxy reply: 10068 192.168.1.3
> INFO: <script>: offer
> -----------LOG------------------
>
> --
> Regards,
>
> MingHon
--
Carsten Bock
http://www.ng-voice.com
mailto:carsten@ng-voice.com
Schomburgstr. 80
22767 Hamburg
Germany
Mobile +49 179 2021244
Office +49 40 34927219
Fax +49 40 34927220