Hello all,
I try to save in the CDR the audio codec used for each established call.
Can you help me?
Regards
Abdoul.I
To be more precise, I look for a variable that will give me the codec used during the call.
Thank you in advance
Abdoul
Le ven. 22 nov. 2019 à 11:12, Abdoul Osséni abdoul.osseni@gmail.com a écrit :
Hello all,
I try to save in the CDR the audio codec used for each established call.
Can you help me?
Regards
Abdoul.I
Hello,
there can be many codecs that are selected/offered via SDP, the one actually used can be seen in the RTP headers, but Kamailio doesn't relay RTP itself.
If you know that in your deployment there is going to be only one codec selected via sdp, then the right place is to take it from the SDP of 200ok, when the INVITE request has SDP, or from ACK SDP if the 200ok was the first with SDP. It is in the media (m=) line, which has the format:
m=<media> <port> <transport> <format list>
For example
m=audio 11424 RTP/AVP 8 101
The the next line should give the first codec id:
$(rb{line.sw,m=}{s.select,3, })
Note that there is a space after '3,'. If doesnt work, try:
$var(s) = " ";
$(rb{line.sw,m=}{s.select,3,$var(s)})
Read more about used transformations at:
* https://www.kamailio.org/wiki/cookbooks/5.3.x/transformations
However, you may need to do further processing if you want the name of the codec, specially for those that have dynamic id, so you need to find the mapping in the a=rtpmap line.
You can use embedded scripting (lua, python, javascript, ... see the app_NAME modules) to parse the body ($rb variable) and extract what you want from there, then set back in an variable (recommended $avp() or $xavp()) that you set to extra accounting parameter of acc module.
Cheers, Daniel
On 22.11.19 11:12, Abdoul Osséni wrote:
Hello all,
I try to save in the CDR the audio codec used for each established call.
Can you help me?
Regards
Abdoul.I
Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
Hello Daniel-Constantin,
Thank you for your response.
When I try that:
if (is_method("INVITE") && status == 200) { $var(s) = " "; $var(codec) = $(rb{line.sw,a=rtpmap}{s.select,1,$var(s)}); }
0(18567) CRITICAL: <core> [core/mem/q_malloc.c:514]: qm_free(): BUG: freeing already freed pointer (0x7fb9a0606010), called from core: core/pvapi.c: tr_param_free(1833), first free pv: pv_trans.c: tr_parse_string(2425) - ignoring 0(18567) ERROR: <core> [core/pvapi.c:1105]: pv_parse_spec2(): bad tr in pvar name "rb" 0(18567) ERROR: <core> [core/pvapi.c:1131]: pv_parse_spec2(): invalid parsing in [$(rb{line.sw,a=rtpmap}{s.select,1,$var(s)})] at (4) 0(18567) CRITICAL: <core> [core/cfg.y:3537]: yyerror_at(): parse error in config file /usr/local/etc/kamailio/kamailio.cfg, line 840, column 17-59: Can't get from cache: $(rb{line.sw,a=rtpmap}{s.select,1,$var(s)}) ERROR: bad config file (1 errors) 0(18567) INFO: <core> [core/sctp_core.c:53]: sctp_core_destroy(): SCTP API not initialized
But with the following code, I have no issue if (is_method("INVITE") && status == 200) { $var(codec) = $(rb{line.sw,a=rtpmap}{s.select,1, }); }
Abdoul OSSENI
Le ven. 22 nov. 2019 à 11:56, Daniel-Constantin Mierla miconda@gmail.com a écrit :
Hello,
there can be many codecs that are selected/offered via SDP, the one actually used can be seen in the RTP headers, but Kamailio doesn't relay RTP itself.
If you know that in your deployment there is going to be only one codec selected via sdp, then the right place is to take it from the SDP of 200ok, when the INVITE request has SDP, or from ACK SDP if the 200ok was the first with SDP. It is in the media (m=) line, which has the format:
m=<media> <port> <transport> <format list>
For example
m=audio 11424 RTP/AVP 8 101
The the next line should give the first codec id:
$(rb{line.sw,m=}{s.select,3, })
Note that there is a space after '3,'. If doesnt work, try:
$var(s) = " ";
$(rb{line.sw,m=}{s.select,3,$var(s)})
Read more about used transformations at:
However, you may need to do further processing if you want the name of the codec, specially for those that have dynamic id, so you need to find the mapping in the a=rtpmap line.
You can use embedded scripting (lua, python, javascript, ... see the app_NAME modules) to parse the body ($rb variable) and extract what you want from there, then set back in an variable (recommended $avp() or $xavp()) that you set to extra accounting parameter of acc module.
Cheers, Daniel On 22.11.19 11:12, Abdoul Osséni wrote:
Hello all,
I try to save in the CDR the audio codec used for each established call.
Can you help me?
Regards
Abdoul.I
Kamailio (SER) - Users Mailing Listsr-users@lists.kamailio.orghttps://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
-- Daniel-Constantin Mierla -- www.asipto.comwww.twitter.com/miconda -- www.linkedin.com/in/miconda Kamailio World Conference - April 27-29, 2020, in Berlin -- www.kamailioworld.com
Hello Abdoul,
this line looks like a bug in Kamailio:
0(18567) CRITICAL: <core> [core/mem/q_malloc.c:514]: qm_free(): BUG: freeing already freed pointer (0x7fb9a0606010), called from core: core/pvapi.c: tr_param_free(1833), first free pv: pv_trans.c: tr_parse_string(2425) – ignoring
Please open an issue in our github tracker about it, with the cfg to reproduce it would be best.
Cheers,
Henning
-- Henning Westerholt – https://skalatan.de/blog/ Kamailio services – https://gilawa.comhttps://gilawa.com/ Kamailio Merchandising – https://skalatan.de/merchandising
From: sr-users sr-users-bounces@lists.kamailio.org On Behalf Of Abdoul Osséni Sent: Friday, November 22, 2019 3:14 PM To: Daniel-Constantin Mierla miconda@gmail.com Cc: Kamailio (SER) - Users Mailing List sr-users@lists.kamailio.org Subject: Re: [SR-Users] How to get the audio codec used for each established call.
Hello Daniel-Constantin,
Thank you for your response.
When I try that:
if (is_method("INVITE") && status == 200) { $var(s) = " "; $var(codec) = $(rb{line.sw,a=rtpmap}{s.select,1,$var(s)}); }
0(18567) CRITICAL: <core> [core/mem/q_malloc.c:514]: qm_free(): BUG: freeing already freed pointer (0x7fb9a0606010), called from core: core/pvapi.c: tr_param_free(1833), first free pv: pv_trans.c: tr_parse_string(2425) - ignoring 0(18567) ERROR: <core> [core/pvapi.c:1105]: pv_parse_spec2(): bad tr in pvar name "rb" 0(18567) ERROR: <core> [core/pvapi.c:1131]: pv_parse_spec2(): invalid parsing in [$(rb{line.sw,a=rtpmap}{s.select,1,$var(s)})] at (4) 0(18567) CRITICAL: <core> [core/cfg.y:3537]: yyerror_at(): parse error in config file /usr/local/etc/kamailio/kamailio.cfg, line 840, column 17-59: Can't get from cache: $(rb{line.sw,a=rtpmap}{s.select,1,$var(s)}) ERROR: bad config file (1 errors) 0(18567) INFO: <core> [core/sctp_core.c:53]: sctp_core_destroy(): SCTP API not initialized
But with the following code, I have no issue if (is_method("INVITE") && status == 200) { $var(codec) = $(rb{line.sw,a=rtpmap}{s.select,1, }); }
Abdoul OSSENI
Le ven. 22 nov. 2019 à 11:56, Daniel-Constantin Mierla <miconda@gmail.commailto:miconda@gmail.com> a écrit :
Hello,
there can be many codecs that are selected/offered via SDP, the one actually used can be seen in the RTP headers, but Kamailio doesn't relay RTP itself.
If you know that in your deployment there is going to be only one codec selected via sdp, then the right place is to take it from the SDP of 200ok, when the INVITE request has SDP, or from ACK SDP if the 200ok was the first with SDP. It is in the media (m=) line, which has the format:
m=<media> <port> <transport> <format list>
For example
m=audio 11424 RTP/AVP 8 101
The the next line should give the first codec id:
$(rb{line.sw,m=}{s.select,3, })
Note that there is a space after '3,'. If doesnt work, try:
$var(s) = " ";
$(rb{line.sw,m=}{s.select,3,$var(s)})
Read more about used transformations at:
* https://www.kamailio.org/wiki/cookbooks/5.3.x/transformations
However, you may need to do further processing if you want the name of the codec, specially for those that have dynamic id, so you need to find the mapping in the a=rtpmap line.
You can use embedded scripting (lua, python, javascript, ... see the app_NAME modules) to parse the body ($rb variable) and extract what you want from there, then set back in an variable (recommended $avp() or $xavp()) that you set to extra accounting parameter of acc module.
Cheers, Daniel On 22.11.19 11:12, Abdoul Osséni wrote: Hello all,
I try to save in the CDR the audio codec used for each established call.
Can you help me?
Regards
Abdoul.I
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sr-users@lists.kamailio.orgmailto:sr-users@lists.kamailio.org
https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
--
Daniel-Constantin Mierla -- www.asipto.comhttp://www.asipto.com
www.twitter.com/micondahttp://www.twitter.com/miconda -- www.linkedin.com/in/micondahttp://www.linkedin.com/in/miconda
Kamailio World Conference - April 27-29, 2020, in Berlin -- www.kamailioworld.comhttp://www.kamailioworld.com
-
Abdoul Osséni -
Daniel-Constantin Mierla -
Henning Westerholt