[SR-Users] [sr-dev] Failed to catch some reply message with reply_route block

Daniel-Constantin Mierla miconda at gmail.com
Mon Aug 26 09:54:20 CEST 2019


Hello,

the $mb and $msg(buf) still point to incoming message, even in the
onsend_route. The content of the outgoing buffer is in $snd(buf).

Isn't trace_mode=1 giving what you need?

  -
https://www.kamailio.org/docs/modules/stable/modules/siptrace.html#siptrace.p.trace_mode

Or do you still want to filter some SIP message, not mirror everything?

On the other hand, I expected sip_trace() to take the outgoing buffer in
onsend_route when mirroring, maybe it is not doing it for response...

Cheers,
Daniel

On 25.08.19 18:50, Salah Ahmed wrote:
> Hello Henning,
>
> I have tried with $msg(buf) in the onsend_route, got those replies
> received from UAS, but didn't found any replies what kamailio
> forwarded to UAC. The sip_trace doing same, that's my concern, I think
> onsend_route we suppose to get those reply messages which kamailio
> forwarded to UAC.
>
> For sip_trace use, we call sip_trace in the onsend_route, and didn't
> set siptrace flag(22) anywhere in the script.
>
> Thanks,
> Salah 
>
> On Sun, Aug 25, 2019 at 11:41 AM Henning Westerholt <hw at skalatan.de
> <mailto:hw at skalatan.de>> wrote:
>
>     Hello Salah,
>
>     add some logging (e.g. print the $mb PV) to see what is captured
>     from the onsend_route. Then you can compare against siptrace
>     content and see if they match or is there something different
>     captured.
>
>     You need to call sip_trace() in the onsend_route, the trace_flag
>     capture method does not work there.
>
>     Cheers,
>
>     Henning
>
>     Am 25.08.19 um 18:01 schrieb Salah Ahmed:
>>     Hello Daniel,
>>
>>     Thanks for your reply. We want this not to modify the reply
>>     message, we just want to invoke sip_trace from onsend_route.
>>     Actually we want to trace all sip messages in between Kamailio
>>     and UAC. Right now we can easily grab all requests using
>>     onsend_route. We also set the core parameter onsend_route_reply =
>>     yes ,This started capturing replies, but those are UAS to
>>     Kamailio side replies. For debug I added xlog in the onsend_route
>>     and print the reply messages. I am not sure, is that sip_trace
>>     method issue or the onsend_route issue. Please guide me is there
>>     anything else I can do for it.
>>
>>     Thanks,
>>     Salah  
>>
>>
>>     On Fri, Aug 23, 2019 at 2:29 PM Salah Ahmed <txrubel at gmail.com
>>     <mailto:txrubel at gmail.com>> wrote:
>>
>>         Hello Henning,
>>
>>         Is there anything wrong what we want to do?
>>
>>         Thanks,
>>         Salah
>>
>>         On Thu, Aug 22, 2019 at 2:56 PM Salah Ahmed
>>         <txrubel at gmail.com <mailto:txrubel at gmail.com>> wrote:
>>
>>             Hello Henning,
>>
>>             Yes this is correct, this reply came from UAS. We got
>>             this correctly. But we want to get, which kamailio sent
>>             to UAC side.
>>
>>             This following reply, we want to get by onreply_route
>>
>>              3(23) DEBUG: <core> [core/msg_translator.c:2306]:
>>             generate_res_buf_from_sip_res(): copied size: orig:130,
>>             new: 16, rest: 773 msg=
>>             SIP/2.0 200 OK
>>             Via: SIP/2.0/UDP 172.32.100.100:5055;branch=z9hG4bK-254-1-0
>>             Record-Route: <sip:172.32.0.6:5060;lr;ftag=1>
>>             Call-ID: T1_MYSER
>>             From: <sip:caller at 172.32.100.100
>>             <mailto:sip%3Acaller at 172.32.100.100>>;tag=1
>>             To: "callee" <sip:3228090000 at 172.32.0.6
>>             <mailto:sip%3A3228090000 at 172.32.0.6>>;tag=6fb31703-d630-4140-a41b-7270cdcae85b
>>             CSeq: 1 INVITE
>>             Server: MYX Callcontrol
>>             Contact: <sip:172.32.10.70:5060 <http://172.32.10.70:5060>>
>>             Allow: OPTIONS, SUBSCRIBE, NOTIFY, PUBLISH, INVITE, ACK,
>>             BYE, CANCEL, UPDATE, REGISTER, MESSAGE, REFER
>>             Supported: timer, replaces, norefersub
>>             Remote-Party-ID: <sip:s at 172.32.0.6
>>             <mailto:sip%3As at 172.32.0.6>>;privacy=off;screen=no
>>             Content-Type: application/sdp
>>             Content-Length:   178
>>
>>             v=0
>>             o=- 53655765 2353687639 IN IP4 172.32.10.70
>>             s=session
>>             c=IN IP4 172.32.10.70
>>             t=0 0
>>             m=audio 10006 RTP/AVP 0
>>             a=rtpmap:0 PCMU/8000
>>             a=ptime:20
>>             a=maxptime:150
>>             a=sendrecv
>>
>>             Thanks,
>>             Salah
>>
>>             On Thu, Aug 22, 2019 at 2:52 PM Henning Westerholt
>>             <hw at skalatan.de <mailto:hw at skalatan.de>> wrote:
>>
>>                 (moved the discussion to user list)
>>
>>                 Hello Salah,
>>
>>                 I see the this output in the log message:
>>
>>                  6(26) INFO: <script>: on_reply_route [SIP/2.0 200 OK
>>                 Via: SIP/2.0/UDP
>>                 172.32.0.6;rport=5060;received=172.32.0.6;branch=z9hG4bKe68a.99dc492fe74dcfe1017828521a5fa362.0
>>
>>                  2(22) INFO: <script>: on_reply_route [SIP/2.0 100 Trying
>>                 Via: SIP/2.0/UDP
>>                 172.32.0.6;rport=5060;received=172.32.0.6;branch=z9hG4bK178a.79cddb135aabfc42736fd9e9fd826ba8.0
>>
>>                 and so on.. So you are seeing the replies correctly,
>>                 or I wrong?
>>
>>                 Cheers,
>>
>>                 Henning
>>
>>                 Am 22.08.19 um 21:29 schrieb Salah Ahmed:
>>>                 Hello Henning,
>>>
>>>                 We already added xlog in the onreply_route and found
>>>                 all messages in between kamailio and UAS. The
>>>                 attached log files in first email has those logs. If
>>>                 any other specific log needed I am here to provide them.
>>>
>>>                 Thanks,
>>>                 Salah
>>>
>>>                 On Thu, Aug 22, 2019 at 2:24 PM Henning Westerholt
>>>                 <hw at skalatan.de <mailto:hw at skalatan.de>> wrote:
>>>
>>>                     Hello Salah,
>>>
>>>                     ok, see if you are able to output some easy log
>>>                     with "xlog" in this route, to make sure there is
>>>                     no cfg problem somewhere.
>>>
>>>                     Cheers,
>>>
>>>                     Henning
>>>
>>>                     Am 22.08.19 um 21:15 schrieb Salah Ahmed:
>>>>                     Hello Henning,
>>>>
>>>>                     Thanks for quick reply, We armed the t_on_reply
>>>>                     just before t_relay() in the route block. 
>>>>
>>>>                             t_on_reply("LOGRPL");
>>>>                             if (!t_relay()) {
>>>>                                     sl_reply_error();
>>>>                             }
>>>>
>>>>                     Thanks,
>>>>                     Salah
>>>>
>>>>                     On Thu, Aug 22, 2019 at 2:03 PM Henning
>>>>                     Westerholt <hw at skalatan.de
>>>>                     <mailto:hw at skalatan.de>> wrote:
>>>>
>>>>                         Hello Salah,
>>>>
>>>>                         the replies are going from the UAS to the
>>>>                         UAC over Kamailo as a proxy, with the
>>>>                         exception of the hop-by-hop 100.
>>>>
>>>>                         So you should see the 200 OK in the
>>>>                         Kamailio in reply_route and onreply_route.
>>>>                         Maybe you can check if you armed the
>>>>                         onreply_route with t_on_reply for the
>>>>                         INVITE routing.
>>>>
>>>>                         Cheers,
>>>>
>>>>                         Henning
>>>>
>>>>                         Am 22.08.19 um 19:50 schrieb Salah Ahmed:
>>>>>                         Hello,
>>>>>
>>>>>                         We facing an issue on capturing sip
>>>>>                         message in Kamailio(Version: 5.2.3). The
>>>>>                         scenario is very simple.
>>>>>
>>>>>                         UAC                    Kamailio           
>>>>>                             UAS
>>>>>                          |--------INVITE--------->|               
>>>>>                              |
>>>>>                          |                       
>>>>>                         |-------INVITE------->|
>>>>>                          |                        |<------100
>>>>>                         Trying----|
>>>>>                          |<-------100 Trying------|               
>>>>>                              |
>>>>>                          |                        |<------200
>>>>>                         Ok--------|
>>>>>                          |<-------200 Ok----------|               
>>>>>                              |
>>>>>
>>>>>                         In this simple scenario, we can't catch
>>>>>                         any reply messages in between the Kamailio
>>>>>                         and UAC. We have
>>>>>                         tried reply_route, onreply_route,
>>>>>                         and onsend_route. But no one work to grep
>>>>>                         that reply on that side. onsend_route was
>>>>>                         bad try as its only for forwarded reply
>>>>>                         message. Is there any other magic to
>>>>>                         capture those replies. A debug=3 log
>>>>>                         message attached here. 
>>>>>
>>>>>                         Thanks,
>>>>>                         Salah
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>                         _______________________________________________
>>>>>                         Kamailio (SER) - Development Mailing List
>>>>>                         sr-dev at lists.kamailio.org <mailto:sr-dev at lists.kamailio.org>
>>>>>                         https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-dev
>>>>
>>>>                         -- 
>>>>                         Henning Westerholt - https://skalatan.de/blog/
>>>>                         Kamailio services - https://skalatan.de/services
>>>>
>>>                     -- 
>>>                     Henning Westerholt - https://skalatan.de/blog/
>>>                     Kamailio services - https://skalatan.de/services
>>>
>>                 -- 
>>                 Henning Westerholt - https://skalatan.de/blog/
>>                 Kamailio services - https://skalatan.de/services
>>
>>
>>     _______________________________________________
>>     Kamailio (SER) - Users Mailing List
>>     sr-users at lists.kamailio.org <mailto:sr-users at lists.kamailio.org>
>>     https://lists.kamailio.org/cgi-bin/mailman/listinfo/sr-users
>
>     -- 
>     Henning Westerholt - https://skalatan.de/blog/
>     Kamailio services - https://skalatan.de/services
>
-- 
Daniel-Constantin Mierla -- www.asipto.com
www.twitter.com/miconda -- www.linkedin.com/in/miconda

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