Re: [sipcore] Dialog state - Scope in draft-ietf-sipcore-reinvite

Hi Gao,

thanks for your answers. Regarding Section 4.8, I agree with you it is
not about glare. That is why the title of the section does not mention
glare. It mentions race conditions. I think we are OK.

Thanks for your comments,

Gonzalo

On 19/07/2010 6:40 AM, gao.yang2@zte.com.cn wrote:
> 
> Hi Gonzalo,
> 
> I found time to read this version on weekend. And there are three main
> points:
> 
> 1. Glare Situations(section 3.5)
> As the new way, this part is relatively simple now. And the new way is
> sending a new refresh usage Re-INVITE to synchronize state for any glare
> situations.
> This is simple, and effective. So, I am OK at this point.
> 
> 2. Race Conditions and Target Refreshes(section 4.8)
> To disallow target refreshes in unreliable response can solve this
> problem. And in fact, I think it is a nice way, as do "Target Refreshes"
> in unreliable response is unreliable. So, I'm OK with it.
> As this rule's meaning is more than glare issue, so we may put this rule
> in a new section, and only mention in section 4.8 that galre problem
> here can be solved by this rule.
> 
> 3. Section 5
> I am OK with this section's revision.
> 
> Thanks,
> 
> Gao
> 
> ===================================
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> ===================================
> 
> 
> *Gonzalo Camarillo <Gonzalo.Camarillo@ericsson.com>*
> 发件人:  sipcore-bounces@ietf.org
> 
> 2010-07-15 18:26
> 
> 	
> 收件人
> 	Gonzalo Camarillo <Gonzalo.Camarillo@ericsson.com>
> 抄送
> 	SIPCORE <sipcore@ietf.org>
> 主题
> 	Re: [sipcore] Dialog state - Scope in draft-ietf-sipcore-reinvite
> 
> 
> 	
> 
> 
> 
> 
> 
> Hi,
> 
> thanks for the feedback I have received on and off list. We seem to have
> consensus on reducing the scope of the draft to session state and target
> refreshes. That is great because it allows us to hugely simplify the
> rules to avoid glare conditions (this is something a few of you have
> requested on the list in the past). I have put together a new revision
> of the draft, which you can fetch from:
> 
> http://users.piuha.net/gonzalo/temp/draft-ietf-sipcore-reinvite-pre05-01.txt
> 
> In addition to adjusting the scope of the draft and simplifying the
> glare-related rules, I have also added a few clarifications to Section 5
> in response to Robert's AD review.
> 
> Let me know if you have any comments.
> 
> Thanks,
> 
> Gonzalo
> 
> 
> On 05/07/2010 9:34 AM, Gonzalo Camarillo wrote:
>> Hi,
>>
>> the re-INVITE draft talks about modifications in the session state,
>> dialog state, and the dialog's remote target. While it is relatively
>> well understood what we mean by session state and the dialog's remote
>> target, we do not really have a good definition for dialog state.
>>
>> We have discussed it in the past and what people had in mind were things
>> such as called party identity. However, the draft is too vague at this
>> point; it should be more precise regarding which piece of "dialog state"
>> the rules in the draft apply to.
>>
>> My suggestion would be to have the draft talk only about session state
>> and the dialog's remote target, and forget about any other dialog state.
>> New extensions whose parameters can be modified by re-INVITEs can
>> specify their own rules, possibly referring to this draft and using the
>> rules defined in it by reference. In this way, the applicability of this
>> draft would be much clearer.
>>
>> Comments?
>>
>> Thanks,
>>
>> Gonzalo
>>
>> _______________________________________________
>> sipcore mailing list
>> sipcore@ietf.org
>> https://www.ietf.org/mailman/listinfo/sipcore
>>
> 
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> 
> 
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