Hello,

On 2/22/12 7:50 PM, Ric Marques wrote:

Daniel -

Thank you for your assistance..

first, here's the sections of my routing where I'm calling fix_nated_sdp, and subsequent call:

# Routing to foreign domains

route[SIPOUT] {

            xlog("---------------------- checking of outbound to 

somewhere else -----------------------------------------");

            if (!uri==myself)

            {

xlog("<---------------------------------- Sending call out to some other domain ------------------------------>");

                            append_hf("P-hint: outbound\r\n");

                            set_advertised_address("10.50.50.8");

xlog("--------------------------bing--------------------------");

                            fix_nated_sdp("2", "10.50.50.8");

xlog("--------------------------bong--------------------------");

                            route(RELAY);

            }

}

route[RELAY] {

            xlog("------------------------------ relaying 

-------------------------------");

            # enable additional event routes for forwarded requests

            # - serial forking, RTP relaying handling, a.s.o.

            if (is_method("INVITE|SUBSCRIBE")) {

                            t_on_branch("MANAGE_BRANCH");

                            t_on_reply("MANAGE_REPLY");

            }

            if (is_method("INVITE")) {

                            t_on_failure("MANAGE_FAILURE");

            }

            if (!t_relay()) {

                            sl_reply_error();

            }

            xlog("------------------------------ exiting relaying 

-------------------------------");

            exit;

}

and here's the section of the log where that's found:

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: ERROR: <script>:

---------------------- checking of outbound to somewhere else

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [socket_info.c:502]: grep_sock_info - checking if host==us: 13==10 && [xxx.xxx.xxx.xxx] == [10.0.10.10]

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [socket_info.c:505]: grep_sock_info - checking if port 5060 matches port 5060

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [forward.c:448]: check_self: host != me

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: ERROR: <script>: <---------------------------------- Sending call out to some other domain ------------------------------>

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: ERROR: <script>: --------------------------bing--------------------------

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: nathelper [nhelpr_funcs.c:148]: type <application/sdp> found valid

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: ERROR: <script>: --------------------------bong--------------------------

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: ERROR: <script>: ------------------------------ relaying -------------------------------

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: tm [t_lookup.c:1379]: DEBUG: t_newtran: msg id=3 , global msg id=3 , T on entrance=(nil)

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: tm [t_lookup.c:527]: t_lookup_request: start searching: hash=34053, isACK=0

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: tm [t_lookup.c:485]: DEBUG: RFC3261 transaction matching failed

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: tm [t_lookup.c:709]: DEBUG: t_lookup_request: no transaction found

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: tm [t_hooks.c:374]: DBG: trans=0x7fb56c0478e8, callback type 1, id 0 entered

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: tm [t_funcs.c:351]: SER: new INVITE

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [msg_translator.c:204]: check_via_address(10.0.10.11, 10.0.10.11, 0)

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [mem/shm_mem.c:111]: WARNING:vqm_resize: resize(0) called

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: tm [t_reply.c:667]: DEBUG: reply sent out. buf=0x7fb571968880: SIP/2.0 100 trying -..., shmem=0x7fb56c049eb8: SIP/2.0 100 trying -

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: tm [t_reply.c:677]: DEBUG: _reply_light: finished

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <script>: new branch [1] to sip:19165551212@xxx.xxx.xxx.xxx

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: siputils [checks.c:104]: no totag

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [parser/sdp/sdp_helpr_funcs.c:479]: located IP address [10.0.10.11] in `o=' field

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [parser/sdp/sdp_helpr_funcs.c:479]: located IP address [10.0.10.11] in `c=' field

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: rtpproxy [rtpproxy_funcs.c:148]: type <application/sdp> found valid

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: rtpproxy [rtpproxy.c:2237]: proxy reply: 38946 10.0.10.10#012

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: siputils [checks.c:104]: no totag

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [msg_translator.c:457]: clen_builder: content-length: 347 (347)

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [msg_translator.c:204]: check_via_address(10.0.10.11, 10.0.10.11, 0)

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: tm [t_funcs.c:388]: SER: new transaction fwd'ed

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: ERROR: <script>:

------------------------------ exiting relaying

Feb 22 10:14:32 demo /usr/local/sbin/kamailio[3602]: DEBUG: <core> [usr_avp.c:644]: DEBUG:destroy_avp_list: destroying list (nil)

Walking through the log makes me think that because I'm using rtpproxy and nathelper, when the t_relay fires it errantly appends the address for rtpproxy to the c= line...

Am I going about this all wrong - is there a better approach?

you cannot use manage_rtpproxy (or other functions from rtpproxy module updating the sdp) with fix_nated_sdp() because of the way changes are applied to the sip message. When using both, it results in concatenation of the two IP -- it is why I asked about the log, expecting you used such two functions.

You may try using msg_apply_changes() in between such two functions, but I recommend making the config file decision in a way that you execute only one such function. For example, you can set a flag after using such functions and before using another one test that flag.

Cheers, Daniel

Ric

*From:*Daniel-Constantin Mierla [mailto:miconda@gmail.com] *Sent:* Wednesday, February 22, 2012 12:52 AM *To:* SIP Router - Kamailio (OpenSER) and SIP Express Router (SER) - Users Mailing List *Cc:* Ric Marques *Subject:* Re: [SR-Users] fix_nated_sdp issue

Hello,

can you set debug=3 in the config file and send the output (syslog messages) of processing such invite?

Cheers, Daniel

On 2/22/12 4:31 AM, Ric Marques wrote:

Greetings,

I'm not sure if I found a bug, or if I just have something completely misconfigured... I'm a total newb with Kamailio, working on a proof of concept design.

Here's my configuration:

            provider -> nat firewall -> kamailio/rtpproxy -> asterisk

For outbound calls from a phone registered to asterisk via kamailio, I'm trying to use fix_nated_sdp("2", "10.50.50.8") to rewrite the media ip address to resolve my audio issues, where 10.50.50.8 is the address outside my firewall. What I'm running into is the 'c=' line doesn't get re-written properly... it inserts the specified address in front of the existing address, and I end up with the following line in my INVITE:

c=IN IP4 10.50.50.810.0.10.10

I have the fix_nated_sdp command under route[sipout], because I only want to use it on calls being sent outside the nat firewall.

Here's the sip invite without the 'fix_nated_sdp' command:

---

INVITE sip:19165551212@xxx.xxx.xxx.xxx SIP/2.0

Record-Route: sip:10.0.10.10;lr=on;ftag=as5498b77e;nat=yes

Via: SIP/2.0/UDP 10.50.50.8.;branch=z9hG4bK4b3a.960f6466.0

Via: SIP/2.0/UDP 10.0.10.11:5060;branch=z9hG4bK145db73e;rport=5060

Max-Forwards: 69

From: "1009" sip:1009@10.0.10.11;tag=as5498b77e

To: sip:19165551212@xxx.xxx.xxx.xxx

Contact: sip:1009@10.0.10.11:5060

Call-ID: 06b8bb1b7dd7801d7b3b9c917fcb9b12@10.0.10.11:5060 mailto:06b8bb1b7dd7801d7b3b9c917fcb9b12@10.0.10.11:5060

CSeq: 102 INVITE

User-Agent: Asterisk PBX SVN-branch-1.8-r356107

Date: Wed, 22 Feb 2012 03:06:06 GMT

Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH

Supported: replaces, timer

Content-Type: application/sdp

Content-Length: 309

P-hint: outbound

v=0

o=root 604360056 604360056 IN IP4 10.0.10.10

s=Asterisk PBX SVN-branch-1.8-r356107

c=IN IP4 10.0.10.10

t=0 0

m=audio 9702 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=ptime:20

a=sendrecv

a=nortpproxy:yes

---

Here's the sip invite with the 'fix_nated_sdp' command:

---

INVITE sip:19167828326@xxx.xxx.xxx.xxx SIP/2.0

Record-Route: sip:10.0.10.10;lr=on;ftag=as49e00c81;nat=yes

Via: SIP/2.0/UDP 10.50.50.8.;branch=z9hG4bK1eab.800c4724.0

Via: SIP/2.0/UDP 10.0.10.11:5060;branch=z9hG4bK20d28324;rport=5060

Max-Forwards: 69

From: "1009" sip:1009@10.0.10.11;tag=as49e00c81

To: sip:19167828326@xxx.xxx.xxx.xxx

Contact: sip:1009@10.0.10.11:5060

Call-ID: 4def5539675b6f644b99bb300e8ec8d6@10.0.10.11:5060 mailto:4def5539675b6f644b99bb300e8ec8d6@10.0.10.11:5060

CSeq: 102 INVITE

User-Agent: Asterisk PBX SVN-branch-1.8-r356107

Date: Wed, 22 Feb 2012 03:18:19 GMT

Allow: INVITE, ACK, CANCEL, OPTIONS, BYE, REFER, SUBSCRIBE, NOTIFY, INFO, PUBLISH

Supported: replaces, timer

Content-Type: application/sdp

Content-Length: 347

P-hint: outbound

v=0

o=root 1009117068 1009117068 IN IP4 10.0.10.10

s=Asterisk PBX SVN-branch-1.8-r356107

c=IN IP4 10.50.50.8.10.0.10.10

t=0 0

m=audio 13540 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=ptime:20

a=sendrecv

a=oldmediaip:10.0.10.11

a=nortpproxy:yes

---

Is this a bug, or is it likely I have something else screwed up?

Thank you in advance for your assistance - this list is an incredible resource!

-Ric

---

SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list sr-users@lists.sip-router.org mailto:sr-users@lists.sip-router.org http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users

-- Daniel-Constantin Mierla --http://www.asipto.com http://linkedin.com/in/miconda -- http://twitter.com/miconda

---

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