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List:       serdev
Subject:    Re: [sr-dev] [SR-Users] Outbound and Registrar. No binding update
From:       José_Luis_Millán <jmillan () aliax ! net>
Date:       2012-07-31 11:59:44
Message-ID: CABw3bnPQBapqcTj7oZNdUEo4PPwLQAoRrkyQE0r9Rd9PiZKChw () mail ! gmail ! com
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Hi,

Outbound provides the UAC a way to update a binding even if it reboots. For
that, a unique and permanent value of instance-id is used, which in
conjunction with the AoR and reg-id determines the binding to the UAC.

Having said this, I guess that the CSeq comparison between the one in the
Register request and the one in the binding does not apply in this scenario
since it is not guaranteed that a UAC saves the CSeq value of the
registration among reboots.

Regards.

2012/7/31 Daniel-Constantin Mierla <miconda@gmail.com>

> Hello,
>
>
> On 7/30/12 7:23 PM, I=F1aki Baz Castillo wrote:
>
>> 2012/7/30 Daniel-Constantin Mierla <miconda@gmail.com>:
>>
>>> quick question to double check if what I understood when I read the spe=
cs
>>> was ok -- in gruu/ob, it does not matter anymore the callid/cseq
>>> combination, or there should still be some checks related to it?
>>>
>> In fact that depends on Outbound instead of GRUU, and not, when using
>> Outbound the registrar does NOT check the Call-ID and CSeq of the
>> REGISTER (and using GRUU means that Outbound is also used, so the
>> Contact has a +sip.instance and reg-id params which are inspected by
>> the registrar to create/update/delete a binding).
>>
> but what about same callid with lower cseq, combined with same sip
> instance and reg-id?
>
> Cheers,
> Daniel
>
> --
> Daniel-Constantin Mierla - http://www.asipto.com
> http://twitter.com/#!/miconda - http://www.linkedin.com/in/**miconda<http=
://www.linkedin.com/in/miconda>
> Kamailio Advanced Training, Seattle, USA, Sep 23-26, 2012 -
> http://asipto.com/u/katu
> Kamailio Practical Workshop, Netherlands, Sep 10-12, 2012 -
> http://asipto.com/u/kpw
>
>

[Attachment #5 (text/html)]

Hi,<div><br></div><div>Outbound provides the UAC a way to update a binding even if it \
reboots. For that, a unique and permanent value of instance-id is used, which in \
conjunction with the AoR and reg-id determines the binding to the UAC.</div> \
<div><br></div><div>Having said this, I guess that the CSeq comparison between the \
one in the Register request and the one in the binding does not apply in this \
scenario since it is not guaranteed that a UAC saves the CSeq value of the \
registration among reboots.</div> <div><br></div><div>Regards.<br><br><div \
class="gmail_quote">2012/7/31 Daniel-Constantin Mierla <span dir="ltr">&lt;<a \
href="mailto:miconda@gmail.com" \
target="_blank">miconda@gmail.com</a>&gt;</span><br><blockquote class="gmail_quote" \
style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex"> \
Hello,<div><div class="h5"><br> <br>
On 7/30/12 7:23 PM, Iñaki Baz Castillo wrote:<br>
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"> 2012/7/30 Daniel-Constantin Mierla &lt;<a \
href="mailto:miconda@gmail.com" target="_blank">miconda@gmail.com</a>&gt;:<br> \
<blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc \
solid;padding-left:1ex"> quick question to double check if what I understood when I \
read the specs<br> was ok -- in gruu/ob, it does not matter anymore the \
callid/cseq<br> combination, or there should still be some checks related to it?<br>
</blockquote>
In fact that depends on Outbound instead of GRUU, and not, when using<br>
Outbound the registrar does NOT check the Call-ID and CSeq of the<br>
REGISTER (and using GRUU means that Outbound is also used, so the<br>
Contact has a +sip.instance and reg-id params which are inspected by<br>
the registrar to create/update/delete a binding).<br>
</blockquote></div></div>
but what about same callid with lower cseq, combined with same sip instance and \
reg-id?<div class="HOEnZb"><div class="h5"><br> Cheers,<br>
Daniel<br>
<br>
-- <br>
Daniel-Constantin Mierla - <a href="http://www.asipto.com" \
target="_blank">http://www.asipto.com</a><br> <a href="http://twitter.com/#!/miconda" \
target="_blank">http://twitter.com/#!/miconda</a> - <a \
href="http://www.linkedin.com/in/miconda" \
target="_blank">http://www.linkedin.com/in/<u></u>miconda</a><br> Kamailio Advanced \
Training, Seattle, USA, Sep 23-26, 2012 - <a href="http://asipto.com/u/katu" \
target="_blank">http://asipto.com/u/katu</a><br> Kamailio Practical Workshop, \
Netherlands, Sep 10-12, 2012 - <a href="http://asipto.com/u/kpw" \
target="_blank">http://asipto.com/u/kpw</a><br> <br>
</div></div></blockquote></div><br></div>



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