[SR-Users] [SIP Transaction] Handle Cancel message

Daniel-Constantin Mierla miconda at gmail.com
Fri Mar 10 14:17:33 CET 2017


Hello,

the pcap files don't show much when I open them, maybe the email
servers/clients corrupted the enconding, as I faced similar issues in
the past -- can you make a tgz archive and resend them?

Cheers,
Daniel


On 10/03/2017 04:49, Hai Bui Duc Ha wrote:
> Hi Daniel,
>
> I send you 2 files pcap, capture on server side.
> + Server: 192.168.1.77
> + Client: 192.168.1.134
> + Scenario: 
>    User 102 call to ring group 777 - has user 100 (192.168.1.134) and
> user 101 (192.168.1.164).
>    User 100 is offline but it's configured push notification from
> Apple to wake up, register and receive INVITE. 
>    I pick up phone on 101 but 100 can not receive the CANCEL message
> to stop the ringing tone.
>
> 1) Pusher_ok.pcap: User 100 can revice the CANCEL message.
> 2) Pusher_failed.pcap: As I told above, when user 101 pick up the
> phone, Freeswitch send CANCEL message to user 100. But when message go
> to Kamailio, Kamailio reply 481 - Call leg/transaction does not exist.
> (I can't capture this packets).
> I also include the log on Freeswitch send CANCEL message and revice
> the 481.
>
>  Kamailio doesn't send 481 from the C code in the case of call, it
> either receives it or it is something in config.
> => This is configure on kamailio: default.cfg, it check *t_check_trans()*
> =======================================================
> /route[PREPARE_INITIAL_REQUESTS]/
> /{/
> /    if (is_method("CANCEL")) {/
> /        if (t_check_trans()) {/
> /            route(RELAY);/
> /        } else {/
> /            sl_send_reply("481", "Call leg/transaction does not exist");/
> /        }/
> /        exit();/
> =======================================================
>
> Thank for your support !
>
> Regards,
> Hai Bui
>
> On Thu, Mar 9, 2017 at 8:27 PM, Daniel-Constantin Mierla
> <miconda at gmail.com <mailto:miconda at gmail.com>> wrote:
>
>     Hello,
>
>     can you provide pcap (or full ngrep output) for all messages of
>     such a call, from initial invite, including all responses and the
>     other requests? The sip trace has to be taken on kamailio server.
>
>     Kamailio doesn't send 481 from the C code in the case of call, it
>     either receives it or it is something in config.
>
>     Cheers,
>     Daniel
>
>
>     On 09/03/2017 06:59, Hai Bui Duc Ha wrote:
>>     Hi all,
>>
>>     I have problem when use module pusher on Kazoo.
>>     The user after receive call from pusher can not receive the
>>     Cancel message if have another people pick up this phone.
>>     I trace log and debug on Kamailio and see the Freeswitch sent
>>     Cancel message but Kamailio reply 481 - Call leg/transaction does
>>     not exist.
>>
>>     The configure on Kamailio: default.cfg
>>     =======================================================
>>     /route[PREPARE_INITIAL_REQUESTS]/
>>     /{/
>>     /    if (is_method("CANCEL")) {/
>>     /        if(t_lookup_cancel()) xlog("L_INFO","$ci|log|========
>>     t_lookup_cancel()");/
>>     /        xlog("L_INFO","$rm from $fu (IP:$si:$sp) ---CAPTURED IN
>>     MAIN---\n");/
>>     /        if (t_check_trans()) {/
>>     /            xlog("L_INFO","$rm from $fu (IP:$si:$sp) ---CHECK
>>     TRANS TRUE---\n");/
>>     /            //xlog("L_INFO",
>>     "$ci|log|====================================");/
>>     /            route(RELAY);/
>>     /        } else {/
>>     /            xlog("L_INFO","$rm from $fu (IP:$si:$sp) ---CHECK
>>     TRANS FALSE---\n");/
>>     /            sl_send_reply("481", "Call leg/transaction does not
>>     exist");/
>>     /        }/
>>     /        exit();/
>>     /    } else if (is_method("ACK")) {/
>>     /        if (t_check_trans()) {/
>>     /            route(RELAY);/
>>     /        }/
>>     /        exit();/
>>     /    }/
>>     =======================================================
>>
>>     As I read
>>     on http://kamailio.org/docs/modules/4.3.x/modules/tm.html#tm.f.t_check_trans
>>     <http://kamailio.org/docs/modules/4.3.x/modules/tm.html#tm.f.t_check_trans>
>>     Kamailio see the cancel message not same the transaction INVITE
>>     message.
>>
>>     INVITE message:
>>     ------------------------------------------------------------------------
>>     INVITE sip:100 at quydang.htk.cvoice SIP/2.0
>>     Via: SIP/2.0/UDP 192.168.1.77:11000;rport;branch=z9hG4bKK9jyp8mXUZHgS
>>     Route: <sip:192.168.1.77:5060 <http://192.168.1.77:5060>>
>>     Max-Forwards: 49
>>     From: "02 quy" <sip:102 at quydang.htk.cvoice>;tag=04K2SappeyDtj
>>     To: <sip:100 at quydang.htk.cvoice>
>>     Call-ID: 19fa9228-ef95-11e6-b473-1f645951fd7b
>>     CSeq: 103030653 INVITE
>>     Contact: <sip:mod_sofia at 192.168.1.77:11000
>>     <http://sip:mod_sofia@192.168.1.77:11000>>
>>     User-Agent: Anttel
>>     Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
>>     REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE
>>     Supported: path, replaces
>>     Allow-Events: talk, hold, conference, presence, as-feature-event,
>>     dialog, line-seize, call-info, sla, include-session-description,
>>     presence.winfo, message-summary, refer
>>     Content-Type: application/sdp
>>     Content-Disposition: session
>>     Content-Length: 247
>>     X-AUTH-IP: 192.168.1.141
>>     X-AUTH-PORT: 64799
>>     X-KAZOO-AOR: sip:100 at quydang.htk.cvoice
>>     X-KAZOO-PUSHER-Token-Proxy: sip:192.168.1.77:5060
>>     <http://192.168.1.77:5060>
>>     X-KAZOO-PUSHER-Token-ID:
>>     803F0D6610AC5979C6F0513A3A4BE62E0BAF1530DC7A98C2C0DC13D784585FBE
>>     X-KAZOO-PUSHER-Token-Type: apple
>>     X-KAZOO-PUSHER-Token-App: com.htkinc
>>     X-FS-Support: update_display,send_info
>>     Remote-Party-ID: "02 quy"
>>     <sip:102 at quydang.htk.cvoice>;party=calling;screen=yes;privacy=off
>>
>>     v=0
>>     o=FreeSWITCH 1486708670 1486708671 IN IP4 192.168.1.77
>>     s=FreeSWITCH
>>     c=IN IP4 192.168.1.77
>>     t=0 0
>>     m=audio 24764 RTP/AVP 0 8 101 13
>>     a=rtpmap:0 PCMU/8000
>>     a=rtpmap:8 PCMA/8000
>>     a=rtpmap:101 telephone-event/8000
>>     a=fmtp:101 0-16
>>     a=ptime:20
>>     ------------------------------------------------------------------------
>>
>>     CANCEL message:
>>     ------------------------------------------------------------------------
>>     CANCEL sip:100 at quydang.htk.cvoice SIP/2.0
>>     Via: SIP/2.0/UDP 192.168.1.77:11000;rport;branch=z9hG4bKK9jyp8mXUZHgS
>>     Route: <sip:192.168.1.77:5060 <http://192.168.1.77:5060>>
>>     Max-Forwards: 49
>>     From: "02 quy" <sip:102 at quydang.htk.cvoice>;tag=04K2SappeyDtj
>>     To: <sip:100 at quydang.htk.cvoice>
>>     Call-ID: 19fa9228-ef95-11e6-b473-1f645951fd7b
>>     CSeq: 103030653 CANCEL
>>     Reason: SIP;cause=200;text="Call completed elsewhere"
>>     Content-Length: 0
>>     ------------------------------------------------------------------------
>>
>>     How can I know it same transaction ? We have any idea to solve
>>     this problem ?
>>     Thank for advice !
>>
>>     Regards,
>>     Hai Bui
>>
>>     -- 
>>     Hai Bui
>>     VoIP engineer, Cvoice team, HTK-HCM Office
>>     Mobile: +84-165-618-9876
>>
>>
>>     _______________________________________________
>>     SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>     sr-users at lists.sip-router.org <mailto:sr-users at lists.sip-router.org>
>>     http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>     <http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users>
>
>     -- 
>     Daniel-Constantin Mierla
>     www.twitter.com/miconda <http://www.twitter.com/miconda> -- www.linkedin.com/in/miconda <http://www.linkedin.com/in/miconda>
>     Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - www.asipto.com <http://www.asipto.com>
>     Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com <http://www.kamailioworld.com>
>
>     _______________________________________________ SIP Express Router
>     (SER) and Kamailio (OpenSER) - sr-users mailing list
>     sr-users at lists.sip-router.org
>     <mailto:sr-users at lists.sip-router.org>
>     http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>     <http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users> 
>
> -- 
> Hai Bui
> VoIP engineer, Cvoice team, HTK-HCM Office
> Mobile: +84-165-618-9876
-- 
Daniel-Constantin Mierla
www.twitter.com/miconda -- www.linkedin.com/in/miconda
Kamailio Advanced Training - Mar 6-8 (Europe) and Mar 20-22 (USA) - www.asipto.com
Kamailio World Conference - May 8-10, 2017 - www.kamailioworld.com
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