Hello Daniel,

Sorry, I was out of the office and could make a test only now. As you told, the HTTP request is now processed differently. Unfortunately, I can no longer start call recording. I tried the following options and got the "rtpp_function_call(): can't get From tag" error message each time.

  1. /usr/bin/curl -H "Content-Type: text" "http://localhost:8088/CALL_RECORD_START/249ae6300da4b1393be203e21068f6a2@127.0.0.1:5080.0"
  2. /usr/bin/curl -H "Content-Type: text" "http://localhost:8088/CALL_RECORD_START/249ae6300da4b1393be203e21068f6a2@127.0.0.1:5080.0" -H "From: <sip:123@127.0.0.1:5080>;tag=1"
  3. /usr/bin/curl -H "Content-Type: text" "http://localhost:8088/CALL_RECORD_START/249ae6300da4b1393be203e21068f6a2@127.0.0.1:5080.0" -H "Call-Id: 249ae6300da4b1393be203e21068f6a2@127.0.0.1:5080.0" -H "To: sip:456@127.0.0.1:5060" -H "From: <sip:123@127.0.0.1:5080>;tag=1"

May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/parse_fline.c:250]: parse_first_line(): first line type 1 (request) flags 2
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/msg_parser.c:677]: parse_msg(): SIP Request:
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/msg_parser.c:679]: parse_msg():  method:  <GET>
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/msg_parser.c:681]: parse_msg():  uri:     </CALL_RECORD_START/249ae6300da4b1393be203e21068f6a2@127.0.0.1:5080.0>
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/msg_parser.c:683]: parse_msg():  version: <HTTP/1.1>
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/parse_hname2.c:294]: parse_sip_header_name(): parsed header name [Via] type 1
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/parse_via.c:2639]: parse_via(): end of header reached, state=5
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/msg_parser.c:555]: parse_headers(): Via found, flags=2
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/msg_parser.c:557]: parse_headers(): this is the first via
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <script>: == TRACE. xhttp:request
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <script>: == TRACE. xhttp:request. HTTP Request Received
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <script>: == TRACE. xhttp:request. hu is: /CALL_RECORD_START/249ae6300da4b1393be203e21068f6a2@127.0.0.1:5080.0
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <script>: call-id=249ae6300da4b1393be203e21068f6a2@127.0.0.1:5080.0 1111111111
May  5 14:40:43 test /usr/sbin/kamailio[19603]: ERROR: rtpengine [rtpengine.c:2547]: rtpp_function_call(): can't get From tag
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: xhttp [xhttp_mod.c:420]: xhttp_send_reply(): sending out response: 200 OK
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/parse_hname2.c:294]: parse_sip_header_name(): parsed header name [Host] type 0
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/parse_hname2.c:294]: parse_sip_header_name(): parsed header name [User-Agent] type 28
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/parse_hname2.c:294]: parse_sip_header_name(): parsed header name [Accept] type 23
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/parse_hname2.c:294]: parse_sip_header_name(): parsed header name [Content-Type] type 11
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/parser/msg_parser.c:91]: get_hdr_field(): found end of header
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/msg_translator.c:162]: check_via_address(): (127.0.0.1, 127.0.0.1, 0)
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/tcp_main.c:1590]: _tcpconn_find(): found connection by id: 5
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/tcp_main.c:2472]: tcpconn_send_put(): send from reader (19603 (27)), reusing fd
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/tcp_main.c:2706]: tcpconn_do_send(): sending...
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/tcp_main.c:2739]: tcpconn_do_send(): after real write: c= 0x7f4ba719cd70 n=118 fd=10
May  5 14:40:43 test /usr/sbin/kamailio[19603]: DEBUG: <core> [core/tcp_main.c:2740]: tcpconn_do_send(): buf=


Thank you!

пт, 30 квіт. 2021 о 17:53 Daniel-Constantin Mierla <miconda@gmail.com> пише:

I pushed a commit to master branch that should make it work to use the function for non-SIP message processing, by giving call-id=... and from-tag=... via flags parameter -- these two attributes seemed to be used by expecting to be set, even if the rtpengine application may ignore one of them.

If you have a chance to test, let me know the result.

Cheers,
Daniel

On 29.04.21 16:38, Daniel-Constantin Mierla wrote:

I looked in the code and indeed it first takes the values from headers for Call-Id, To (tag), From (tag), failing if the headers are not found, but then it updates the values from the flags parameter. So the call-id can be anything in the headers if you provide it as "call-id=xyz" parameter.

Maybe the code should be reworked a bit to parse first the flags parameters and if values are not found for the sip attributes, then try to get them from headers.

Cheers,
Daniel

On 29.04.21 15:39, Володимир Іванець wrote:
I run Kamailio with debug=3 and Rtpengine with LOG_LEVEL=6.

Rtpengine logs offers, answers and deletes but there is nothing when I trigger start_recording with HTTP request. Below is the full Kamailio log for the request. It looks to be failing right on the start_recording function and I don't see any other issues except empty Call-Id here: "receive_msg(): --- received sip message - request - call-id: [] - cseq: []".

I tried to add Call-Id header to my HTTP request and found out that now rtpengine module will complain about missing To header. With tries and errors, I specified all required headers and Rtpengine started call recording:

It also looks like rtpengine module does not care about actual header values. Function start_recording called with Call-Id value is enough to start call recording even if all headers contain random invalid values:
 /usr/bin/curl -H "Content-Type: text" "http://localhost:8088/CALL_RECORD_START/6559572e21e08e0a41503ba5779c6604@127.0.0.1:5080.0" -H "Call-Id: does_mot_matter" -H "To: sip:456@127.0.0.1:5060" -H "From: <sip:123@127.0.0.1:5080>;tag=1"

Thank you very much for your help!



Apr 29 16:01:47 test /usr/sbin/kamailio[24120]: DEBUG: <core> [core/ip_addr.c:229]: print_ip(): tcpconn_new: new tcp connection: 127.0.0.1
Apr 29 16:01:47 test /usr/sbin/kamailio[24120]: DEBUG: <core> [core/tcp_main.c:1175]: tcpconn_new(): on port 42782, type 2, socket 64
Apr 29 16:01:47 test /usr/sbin/kamailio[24120]: DEBUG: <core> [core/tcp_main.c:1498]: tcpconn_add(): hashes: 1710:1616:2551, 1
Apr 29 16:01:47 test /usr/sbin/kamailio[24120]: DEBUG: <core> [core/io_wait.h:375]: io_watch_add(): DBG: io_watch_add(0xae63a0, 64, 2, 0x7f943ba04ac0), fd_no=50
Apr 29 16:01:47 test /usr/sbin/kamailio[24120]: DEBUG: <core> [core/io_wait.h:600]: io_watch_del(): DBG: io_watch_del (0xae63a0, 64, -1, 0x0) fd_no=51 called
Apr 29 16:01:47 test /usr/sbin/kamailio[24120]: DEBUG: <core> [core/tcp_main.c:4457]: handle_tcpconn_ev(): sending to child, events 1
Apr 29 16:01:47 test /usr/sbin/kamailio[24120]: DEBUG: <core> [core/tcp_main.c:4130]: send2child(): selected tcp worker idx:0 proc:35 pid:24116 for activity on [tcp:127.0.0.1:8088], 0x7f943ba04ac0
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/tcp_read.c:1749]: handle_io(): received n=8 con=0x7f943ba04ac0, fd=13
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:610]: parse_msg(): SIP Request:
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:612]: parse_msg():  method:  <GET>
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:614]: parse_msg():  uri:     </CALL_RECORD_START/7a444c165953cf0a196e10e50d0b611e@127.0.0.1:5080.0>
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:616]: parse_msg():  version: <HTTP/1.1>
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:89]: get_hdr_field(): found end of header
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/receive.c:324]: receive_msg(): --- received sip message - request - call-id: [] - cseq: []
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: xhttp [xhttp_mod.c:382]: xhttp_handler(): new fake msg created (286 bytes):
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:610]: parse_msg(): SIP Request:
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:612]: parse_msg():  method:  <GET>
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:614]: parse_msg():  uri:     </CALL_RECORD_START/7a444c165953cf0a196e10e50d0b611e@127.0.0.1:5080.0>
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:616]: parse_msg():  version: <HTTP/1.1>
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/parse_via.c:2639]: parse_via(): end of header reached, state=5
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:498]: parse_headers(): Via found, flags=2
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:500]: parse_headers(): this is the first via
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <script>: == TRACE. xhttp:request
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <script>: == TRACE. xhttp:request. HTTP Request Received
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <script>: == TRACE. xhttp:request. hu is: /CALL_RECORD_START/7a444c165953cf0a196e10e50d0b611e@127.0.0.1:5080.0
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <script>: call-id=7a444c165953cf0a196e10e50d0b611e@127.0.0.1:5080.0
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/parser/msg_parser.c:89]: get_hdr_field(): found end of header
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: ERROR: rtpengine [rtpengine_funcs.c:294]: get_callid(): call-id not found
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: ERROR: rtpengine [rtpengine.c:2383]: rtpp_function_call(): can't get Call-Id field
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: xhttp [xhttp_mod.c:441]: xhttp_send_reply(): sending out response: 200 OK
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/msg_translator.c:161]: check_via_address(): (127.0.0.1, 127.0.0.1, 0)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/tcp_main.c:1590]: _tcpconn_find(): found connection by id: 1
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/tcp_main.c:2472]: tcpconn_send_put(): send from reader (24116 (35)), reusing fd
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/tcp_main.c:2706]: tcpconn_do_send(): sending...
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/tcp_main.c:2739]: tcpconn_do_send(): after real write: c= 0x7f943ba04ac0 n=113 fd=13
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/tcp_main.c:2740]: tcpconn_do_send(): buf=
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/usr_avp.c:636]: destroy_avp_list(): destroying list (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/xavp.c:539]: xavp_destroy_list(): destroying xavp list (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/xavp.c:539]: xavp_destroy_list(): destroying xavp list (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/xavp.c:539]: xavp_destroy_list(): destroying xavp list (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/receive.c:528]: receive_msg(): cleaning up
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/io_wait.h:375]: io_watch_add(): DBG: io_watch_add(0xb2a640, 13, 2, 0x7f943ba04ac0), fd_no=1
Apr 29 16:01:47 test /usr/sbin/kamailio[24120]: DEBUG: <core> [core/tcp_main.c:3793]: handle_ser_child(): read response= 7f943ba04ac0, -1, fd -1 from 35 (24116)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/io_wait.h:600]: io_watch_del(): DBG: io_watch_del (0xb2a640, 13, -1, 0x10) fd_no=2 called
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/tcp_read.c:1890]: handle_io(): removing from list 0x7f943ba04ac0 id 1 fd 13, state -1, flags 4028, main fd -1, refcnt 1 ([127.0.0.1]:42782 -> [127.0.0.1]:8088)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/tcp_read.c:1671]: release_tcpconn(): releasing con 0x7f943ba04ac0, state -2, fd=13, id=1 ([127.0.0.1]:42782 -> [127.0.0.1]:8088)
Apr 29 16:01:47 test /usr/sbin/kamailio[24116]: DEBUG: <core> [core/tcp_read.c:1672]: release_tcpconn(): extra_data (nil)
Apr 29 16:01:47 test /usr/sbin/kamailio[24120]: DEBUG: <core> [core/tcp_main.c:3560]: handle_tcp_child(): reader response= 7f943ba04ac0, -2 from 0

чт, 29 квіт. 2021 о 13:17 Daniel-Constantin Mierla <miconda@gmail.com> пише:

Ohhh, blindly missed the assignment before. You should run both kamailio and rtpengine with higher debug level and see if you get any hints from the log messages.

Cheers,
Daniel

On 29.04.21 11:51, Володимир Іванець wrote:
Hello Daniel,

That is correct. My $var(call_id) variable contains concatenation of the "call-id=" string and a Call-Id value.
Apr 27 18:25:00 test /usr/sbin/kamailio[5347]: DEBUG: <script>: call-id=3de74068278ede4417086eb82bdf5a06@127.0.0.1:5080.0

Thank you!

чт, 29 квіт. 2021 о 09:58 Daniel-Constantin Mierla <miconda@gmail.com> пише:

Hello,

related to the initial config snippet example, the call-id is expected to be provide as a named flag, like:

start_recording("call-id=$var(call_id)");

See the readme of the rtpengine module for more details.

Cheers,
Daniel

On 29.04.21 08:23, Володимир Іванець wrote:
Hello Richard,

Thank you very much for the suggestion! I will give it a try.

ср, 28 квіт. 2021, 20:00 користувач Richard Fuchs <rfuchs@sipwise.com> пише:
On 28/04/2021 10.53, [ EXT ] Володимир Іванець wrote:
Hello!

I'm testing call recording with Rtpengine. It works fine when the "record-call=on" flag is added to the rtpengine_offer or start_recording is used in the request_route.

But I was wondering if the call recording can be managed by a separate application. So I add the following lines to the event_route[xhttp:request] and triggered it with an HTTP request after the call was established. The call-id value was taken from the Rtpengine log and sent with the request.
  if ($hu =~ "^/CALL_RECORD_START/") {
    $var(call_id) = "call-id=" + $(hu{s.select,2,/});
    xlog("L_DBG", "$var(call_id)");
    start_recording($var(call_id));
    exit;
  }

If you have to reason to go through Kamailio for this, you can simply trigger the command from any other external application. There's a sample script included in the repo that can be used for this purpose directly (making use of the Perl module that is also included): https://github.com/sipwise/rtpengine/blob/master/utils/rtpengine-ng-client

There's also a nodejs client that I'm aware of: https://github.com/davehorton/rtpengine-client

Or you can hand-roll the request and talk to rtpengine via HTTP or Websocket for example.

Cheers

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-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - Online
May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
  * https://www.asipto.com/sw/kamailio-advanced-training-online/
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - Online
May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
  * https://www.asipto.com/sw/kamailio-advanced-training-online/
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - Online
May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
  * https://www.asipto.com/sw/kamailio-advanced-training-online/
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - Online
May 17-20, 2021 (Europe Timezone) - June 7-10, 2021 (America Timezone)
  * https://www.asipto.com/sw/kamailio-advanced-training-online/