[SIP Beyond VoIP] Another case where Sylk would reject Notifications

Hadzhiev, Tihomir tihomir.hadzhiev at acision.com
Fri Nov 16 13:37:32 CET 2012


Well I see that the NOTIFY reaches Sylk, and SYLK says OK on the notify, the notify is sent towards the generated address, for example:

Contact URI: yndugtca at 10.226.20.56:6060      which is Sylk.

Also what I see is that Sylk replies with HTTP OK 202 on the SUBSCRIBES -> Is this correct ?

Cheers,
Tiho


-----Original Message-----
From: Saúl Ibarra Corretgé [mailto:saul at ag-projects.com]
Sent: 16 November 2012 12:35
To: Hadzhiev, Tihomir
Cc: Adrian Georgescu; sipbeyondvoip at lists.ag-projects.com
Subject: Re: [SIP Beyond VoIP] Another case where Sylk would reject Notifications


On Nov 16, 2012, at 12:25 PM, Hadzhiev, Tihomir wrote:

> Well,
>
> I see in a dump that Sylk generated the presence subscribption and probe towards the XMPP server ( Ejabberd ) and this is being responded as SUBSCRIBED by EjabberD
>
> Then the following Notify is sent towards IMS from Sylk ( with Tuple populated )
>
> Session Initiation Protocol
>     Request-Line: NOTIFY sip:alice at 10.226.20.14:55305;transport=udp SIP/2.0
>         Method: NOTIFY
>         Request-URI: sip:alice at 10.226.20.14:55305;transport=udp
>             Request-URI User Part: alice
>             Request-URI Host Part: 10.226.20.14
>             Request-URI Host Port: 55305
>         [Resent Packet: False]
>     Message Header
>         Via: SIP/2.0/UDP 10.226.20.56:6060;rport;branch=z9hG4bKPjRey1TfZpnkw0bWjo17eyzOwe4yIw-0-f
>             Transport: UDP
>             Sent-by Address: 10.226.20.56
>             Sent-by port: 6060
>             RPort: rport
>             Branch: z9hG4bKPjRey1TfZpnkw0bWjo17eyzOwe4yIw-0-f
>         Max-Forwards: 70
>         From: <sip:tihoparvi at testing.com>;tag=Pxq4QZ-BeM7HHoMWn1HCb7DniVmSnspT
>             SIP from address: sip:tihoparvi at testing.com
>                 SIP from address User Part: tihoparvi
>                 SIP from address Host Part: testing.com
>             SIP tag: Pxq4QZ-BeM7HHoMWn1HCb7DniVmSnspT
>         To: <sip:alice at open-ims.test>;tag=24372
>             SIP to address: sip:alice at open-ims.test
>                 SIP to address User Part: alice
>                 SIP to address Host Part: open-ims.test
>             SIP tag: 24372
>         Contact: <sip:tihoparvi at 10.226.20.56:6060>
>             Contact-URI: sip:tihoparvi at 10.226.20.56:6060
>                 Contactt-URI User Part: tihoparvi
>                 Contact-URI Host Part: 10.226.20.56
>                 Contact-URI Host Port: 6060
>         Call-ID: M-874137a0b1349286241207066c1c4e72
>         CSeq: 15028 NOTIFY
>             Sequence Number: 15028
>             Method: NOTIFY
>         Route: <sip:mo at 10.226.20.240:6060;lr>
>         Route: <sip:mo at 10.226.20.240:4060;lr>
>         Event: presence
>         Subscription-State: active;expires=599996
>         Allow-Events: conference, refer, presence
>         User-Agent: SylkServer-2.2.1
>         Content-Type: application/pidf+xml
>         Content-Length:   873
>    Message Body
>         eXtensible Markup Language
>             <?xml
>                 version='1.0'
>                 encoding='UTF-8'
>                 ?>
>             <presence
>                 xmlns:dm="urn:ietf:params:xml:ns:pidf:data-model"
>                 xmlns:agp-pidf="urn:ag-projects:xml:ns:pidf"
>                 xmlns:caps="urn:ietf:params:xml:ns:pidf:caps"
>                 xmlns:rpid="urn:ietf:params:xml:ns:pidf:rpid"
>                 xmlns="urn:ietf:params:xml:ns:pidf"
>                 entity="tihoparvi%40testing.com">
>                 <tuple
>                     id="ID-435a2d52384c474b4547">
>                     <status>
>                         <basic>
>                             open
>                             </basic>
>                         <agp-pidf:extended>
>                             available
>                             </agp-pidf:extended>
>                         </status>
>                     <dm:deviceID>
>                         435a2d52384c474b4547
>                         </dm:deviceID>
>                     <agp-pidf:device-info
>                         id="435a2d52384c474b4547">
>                         <agp-pidf:description>
>                             CZ-R8LGKEG
>                             </agp-pidf:description>
>                         </agp-pidf:device-info>
>                     <caps:servcaps>
>                         <caps:message>
>                             true
>                             </caps:message>
>                         <caps:text>
>                             true
>                             </caps:text>
>                         </caps:servcaps>
>                     <contact>
>                         sip%3Atihoparvi%40testing.com%3Bxmpp%3Bgr%3D435a2d52384c474b4547
>                         </contact>
>                     </tuple>
>                 <dm:person
>                     id="ID-ed8975ecb63f91ca1146ca625b6fca2d">
>                     <rpid:activities/>
>                     </dm:person>
>                 </presence>
>
>
> The above pdu is responded with OK
>
> What I don't like at some point is that a Notify from the presence server for the SIP user to the XMPP user with the PDIF is being rejected by the SIP proxy and does not reach Sylk, the error  is :
>
> Warning: 392 10.226.20.240:6060 "Noisy feedback tells:  pid=8570 req_src_ip=10.226.20.56 req_src_port=5080 in_uri=sip:zvkgjyfh at 10.226.20.56:6060 out_uri=sip:zvkgjyfh at 10.226.20.56:6060 via_cnt==1"   but this might not have any relation L
>
> Is a fact that the presence request reaches the XMPP server correctly, and it is acknowledged. But still I cannot see the IMS user online.
>

Does the NOTIFY reach SylkServer? If it doesn't then there not nothing SylkServer can do about it.

--
Saúl Ibarra Corretgé
AG Projects





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