[SR-Users] Kamailio BLF Issue TCP vs UDP

Fri Mar 27 00:23:02 CET 2015

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!
>>
>>
>>
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>> sr-users at lists.sip-router.org
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> 
> -- 
> 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
> 
> 
> 
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