[SR-Users] Kamailio BLF Issue TCP vs UDP

Fri Mar 27 11:57:22 CET 2015

Yes, record route is being generated for all SUBSCRIBE, NOTIFY, and just
in case REFER, INFO, PUBLISH.

--fred

On 03/27/2015 06:38 AM, Daniel-Constantin Mierla wrote:
> 202 is ok, so freeswitch has created the subscription dialog and should
> send notify requests with event dialog.
> 
> As I can see in the traces, traffic is TCP to Kamailio and UDP in
> between Kamailio and FreeSwitch. Are you doing record_route() for all
> SUBSCRIBE and NOTIFY requests?
> 
> Cheers,
> Daniel
> 
> On 27/03/15 00:23, Fred Posner wrote:
>> For both UDP and TCP I receive a 202.
>>
>> --fred
>>
>> On 03/26/2015 06:45 PM, Daniel-Constantin Mierla wrote:
>>> Hello,
>>>
>>> actually there is nothing wrong with the NOTIFY via TCP. But it is not
>>> for Event: dialog (which is for BLF), it is for Event: refer (which is
>>> for other purposes, having Content-Type: message/sipfrag -- see
>>> https://www.ietf.org/rfc/rfc3420.txt).
>>>
>>> You have to see why freeswitch is not sending the notify for Event:
>>> dialog. Does it send the 200ok for the SUBSCRIBE to event dialog?
>>>
>>> Cheers,
>>> Daniel
>>>
>>> On 26/03/15 23:33, Fred Posner wrote:
>>>> Greetings all:
>>>>
>>>> Having a weird issue with BLF relay from Kamailio <-> FreeSWITCH on the
>>>> EC2 network.
>>>>
>>>> Set-up:
>>>>
>>>> Natted Client <-> Natted Kamailio <-> Natted FreeSWITCH
>>>>
>>>> Kamailio has a public advertised IP (Amazon Cloud) and sends to
>>>> FreeSWITCH's public IP (Amazon Cloud). Clients register to Kamailio and
>>>> the registration sent to FreeSWITCH (via uac).
>>>>
>>>> What works:
>>>>
>>>> When a client registers to kamailio via UDP, all works beautifully.
>>>>
>>>> What doesn't work:
>>>>
>>>> When a client registers to kamailio via TCP, a NOTIFY is sent with
>>>> almost no information.
>>>>
>>>> Example of UDP traffic:
>>>>
>>>> U 2015/03/26 22:12:30.483767 FREESWITCH_IPADDR:5060 ->
>>>> KAMAILIO_NAT_IPADDR:5060
>>>> NOTIFY sip:3000 at CLIENT_PUBLIC_IPADDR:42477;line=51w5wsns SIP/2.0.
>>>> Via: SIP/2.0/UDP FREESWITCH_IPADDR;rport;branch=z9hG4bKv7X88FmKg04UF.
>>>> Route: <sip:KAMAILIO_PUBLIC_IPADDR>;lr=on;ftag=xew5nmpr9q;nat=yes.
>>>> Record-Route: <sip:KAMAILIO_PUBLIC_IPADDR>;lr=on;ftag=xew5nmpr9q;nat=yes.
>>>> Max-Forwards: 70.
>>>> From: <sip:3000 at CLIENT_DOMAIN;user=phone>;tag=YF4HMSQNlOOt.
>>>> To: <sip:3000 at CLIENT_DOMAIN>;tag=xew5nmpr9q.
>>>> Call-ID: 3134323734303730333531303039-ji1sw7gyd7uj.
>>>> CSeq: 366877453 NOTIFY.
>>>> Contact: <sip:3000 at FREESWITCH_IPADDR:5060>.
>>>> User-Agent:
>>>> FreeSWITCH-mod_sofia/1.4.18+git~20150312T185523Z~4eed221b69~64bit.
>>>> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
>>>> REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE.
>>>> Supported: timer, path, replaces.
>>>> Event: dialog.
>>>> Allow-Events: talk, hold, conference, presence, as-feature-event,
>>>> dialog, line-seize, call-info, sla, include-session-description,
>>>> presence.winfo, message-summary, refer.
>>>> Subscription-State: active;expires=2686.
>>>> Content-Type: application/dialog-info+xml.
>>>> Content-Length: 546.
>>>> .
>>>> <?xml version="1.0"?>
>>>> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="14"
>>>> state="full" entity="sip:3000 at CLIENT_DOMAIN">
>>>> <dialog id="312b3bee-d405-11e4-a8b6-41b65d0bd045" direction="initiator">
>>>> <state>confirmed</state>
>>>> <local>
>>>> <identity display="3000">sip:3000 at CLIENT_DOMAIN</identity>
>>>> <target uri="sip:3000 at CLIENT_DOMAIN">
>>>> <param pname="+sip.rendering" pvalue="yes"/>
>>>> </target>
>>>> </local>
>>>> <remote>
>>>> <identity display="*98">sip:*98 at CLIENT_DOMAIN</identity>
>>>> <target uri="sip:**3000 at CLIENT_DOMAIN"/>
>>>> </remote>
>>>> </dialog>
>>>> </dialog-info>
>>>>
>>>>
>>>> U 2015/03/26 22:12:30.483877 KAMAILIO_NAT_IPADDR:5060 ->
>>>> CLIENT_PUBLIC_IPADDR:42477
>>>> NOTIFY sip:3000 at CLIENT_PUBLIC_IPADDR:42477;line=51w5wsns SIP/2.0.
>>>> Via: SIP/2.0/UDP
>>>> KAMAILIO_PUBLIC_IPADDR:5060;branch=z9hG4bKfabf.4908255bf1623d250ddf7d51a3b49fb8.0.
>>>> Via: SIP/2.0/UDP
>>>> FREESWITCH_IPADDR;received=FREESWITCH_IPADDR;rport=5060;branch=z9hG4bKv7X88FmKg04UF.
>>>> Record-Route: <sip:KAMAILIO_PUBLIC_IPADDR>;lr=on;ftag=xew5nmpr9q;nat=yes.
>>>> Max-Forwards: 69.
>>>> From: <sip:3000 at CLIENT_DOMAIN;user=phone>;tag=YF4HMSQNlOOt.
>>>> To: <sip:3000 at CLIENT_DOMAIN>;tag=xew5nmpr9q.
>>>> Call-ID: 3134323734303730333531303039-ji1sw7gyd7uj.
>>>> CSeq: 366877453 NOTIFY.
>>>> Contact: <sip:3000 at FREESWITCH_IPADDR:5060>.
>>>> User-Agent:
>>>> FreeSWITCH-mod_sofia/1.4.18+git~20150312T185523Z~4eed221b69~64bit.
>>>> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
>>>> REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE.
>>>> Supported: timer, path, replaces.
>>>> Event: dialog.
>>>> Allow-Events: talk, hold, conference, presence, as-feature-event,
>>>> dialog, line-seize, call-info, sla, include-session-description,
>>>> presence.winfo, message-summary, refer.
>>>> Subscription-State: active;expires=2686.
>>>> Content-Type: application/dialog-info+xml.
>>>> Content-Length: 546.
>>>> .
>>>> <?xml version="1.0"?>
>>>> <dialog-info xmlns="urn:ietf:params:xml:ns:dialog-info" version="14"
>>>> state="full" entity="sip:3000 at CLIENT_DOMAIN">
>>>> <dialog id="312b3bee-d405-11e4-a8b6-41b65d0bd045" direction="initiator">
>>>> <state>confirmed</state>
>>>> <local>
>>>> <identity display="3000">sip:3000 at CLIENT_DOMAIN</identity>
>>>> <target uri="sip:3000 at CLIENT_DOMAIN">
>>>> <param pname="+sip.rendering" pvalue="yes"/>
>>>> </target>
>>>> </local>
>>>> <remote>
>>>> <identity display="*98">sip:*98 at CLIENT_DOMAIN</identity>
>>>> <target uri="sip:**3000 at CLIENT_DOMAIN"/>
>>>> </remote>
>>>> </dialog>
>>>> </dialog-info>
>>>>
>>>>
>>>> Example of TCP failure:
>>>>
>>>> U 2015/03/26 22:19:45.963196 FREESWITCH_IPADDR:5060 ->
>>>> KAMAILIO_NAT_IPADDR:5160
>>>> NOTIFY sip:3001 at CLIENT_PUBLIC_IPADDR:5065;transport=tcp SIP/2.0.
>>>> Via: SIP/2.0/UDP FREESWITCH_IPADDR;rport;branch=z9hG4bKjH5Nt8QKUU9Sp.
>>>> Route:
>>>> <sip:KAMAILIO_PUBLIC_IPADDR:5160;r2=on;lr=on;ftag=9jSFr02tgvHym;nat=yes>.
>>>> Route:
>>>> <sip:KAMAILIO_PUBLIC_IPADDR:5160;transport=tcp;r2=on;lr=on;ftag=9jSFr02tgvHym;nat=yes>.
>>>> Max-Forwards: 70.
>>>> From: "3000" <sip:3000 at CLIENT_DOMAIN>;tag=9jSFr02tgvHym.
>>>> To: <sip:3001 at CLIENT_DOMAIN>;tag=1dba0f3ceb32436bi0.
>>>> Call-ID: 0882b1bc-4ea9-1233-f3a2-12e513dfd8f0.
>>>> CSeq: 73368127 NOTIFY.
>>>> Contact: <sip:mod_sofia at FREESWITCH_IPADDR:5060>.
>>>> User-Agent:
>>>> FreeSWITCH-mod_sofia/1.4.18+git~20150312T185523Z~4eed221b69~64bit.
>>>> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
>>>> REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE.
>>>> Supported: timer, path, replaces.
>>>> Event: refer;id=101.
>>>> Allow-Events: talk, hold, conference, presence, as-feature-event,
>>>> dialog, line-seize, call-info, sla, include-session-description,
>>>> presence.winfo, message-summary, refer.
>>>> Subscription-State: terminated;reason=noresource.
>>>> Content-Type: message/sipfrag;version=2.0.
>>>> Content-Length: 16.
>>>> .
>>>> SIP/2.0 200 OK.
>>>>
>>>>
>>>> T 2015/03/26 22:19:45.963407 KAMAILIO_NAT_IPADDR:5160 ->
>>>> CLIENT_PUBLIC_IPADDR:5065 [AP]
>>>> NOTIFY sip:3001 at CLIENT_PUBLIC_IPADDR:5065;transport=tcp SIP/2.0.
>>>> Via: SIP/2.0/TCP
>>>> KAMAILIO_PUBLIC_IPADDR:5160;branch=z9hG4bKe961.8d1f19f1acc0295e5e397afa76910115.0.
>>>> Via: SIP/2.0/UDP
>>>> FREESWITCH_IPADDR;received=FREESWITCH_IPADDR;rport=5060;branch=z9hG4bKjH5Nt8QKUU9Sp.
>>>> Max-Forwards: 69.
>>>> From: "3000" <sip:3000 at CLIENT_DOMAIN>;tag=9jSFr02tgvHym.
>>>> To: <sip:3001 at CLIENT_DOMAIN>;tag=1dba0f3ceb32436bi0.
>>>> Call-ID: 0882b1bc-4ea9-1233-f3a2-12e513dfd8f0.
>>>> CSeq: 73368127 NOTIFY.
>>>> Contact: <sip:mod_sofia at FREESWITCH_IPADDR:5060>.
>>>> User-Agent:
>>>> FreeSWITCH-mod_sofia/1.4.18+git~20150312T185523Z~4eed221b69~64bit.
>>>> Allow: INVITE, ACK, BYE, CANCEL, OPTIONS, MESSAGE, INFO, UPDATE,
>>>> REGISTER, REFER, NOTIFY, PUBLISH, SUBSCRIBE.
>>>> Supported: timer, path, replaces.
>>>> Event: refer;id=101.
>>>> Allow-Events: talk, hold, conference, presence, as-feature-event,
>>>> dialog, line-seize, call-info, sla, include-session-description,
>>>> presence.winfo, message-summary, refer.
>>>> Subscription-State: terminated;reason=noresource.
>>>> Content-Type: message/sipfrag;version=2.0.
>>>> Content-Length: 16.
>>>> .
>>>> SIP/2.0 200 OK.
>>>>
>>>>
>>>> My thoughts is that this is on FreeSWITCH, just not sending a NOTIFY
>>>> with anything of value. That being said, I'd love to know if (a) anyone
>>>> else has had this issue or (b) if someone has a different theory.
>>>>
>>>> Thanks!
>>>>
>>>>
>>>>
>>>> _______________________________________________
>>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>>> sr-users at lists.sip-router.org
>>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>> -- 
>>> Daniel-Constantin Mierla
>>> http://twitter.com/#!/miconda - http://www.linkedin.com/in/miconda
>>> Kamailio World Conference, May 27-29, 2015
>>> Berlin, Germany - http://www.kamailioworld.com
>>>
>>>
>>>
>>> _______________________________________________
>>> SIP Express Router (SER) and Kamailio (OpenSER) - sr-users mailing list
>>> sr-users at lists.sip-router.org
>>> http://lists.sip-router.org/cgi-bin/mailman/listinfo/sr-users
>>>
>> _______________________________________________
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>> sr-users at lists.sip-router.org
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> 