Re: [dispatch] Draft: CBUS (Condition-based URI Subscription) requirements draft - draft-holmberg-dispatch-cbus-00.txt

["Christer Holmberg" <[e-mail]>]

Hi,

I will try to address the comments given by Dean, Cullen, Dale and
others in a single reply. Please let me know if I forgot something.

First, I didn't want to copy/past the whole OMA spec into the draft, but
if there are problems to understand what the proposal is about more text
will of course be added. I thought I had covered all the acronyms, but
that can of course also be fixed.

Second, as I said in another e-mail, my assumption is that the outcome
of this is (at least):

1. An event package in order to deliver the URI list
2. A mechanism to provide the conditions, which the server will use for
the evaluation

So, the idea is to use the existing SIP SUB/NOT mechanism. The only
"new" thing is to provide the conditions as part of the subscription.

Third, I am not sure I would call it a configuration-delivery problem.
Of course, the conditions can be said to "configure" the CBUS server,
when it starts looking for matching URIs. But, the conditions can be
unique for every subscription, so that is the reason why it is proposed
to deliver the subscription specific conditions as part of the
subscription.

Last, I don't agree to that the the functionality is a pure
request/response protocol. It is a sub/not functionaltiy: you may not
get the "response" (notification") immediately, and in some cases a
single subscription may trigger multiple notifications.

Regards,

Christer



 

> -----Original Message-----
> From: Dean Willis [mailto:[e-mail]] 
> Sent: 28. toukokuuta 2009 2:33
> To: Christer Holmberg
> Cc: [e-mail]
> Subject: Re: [dispatch] Draft: CBUS (Condition-based URI 
> Subscription) requirements draft - draft-holmberg-dispatch-cbus-00.txt
> 
> 
> On May 27, 2009, at 7:45 AM, Christer Holmberg wrote:
> 
> >
> > Hi,
> >
> > I've submitted a draft which proposes SIP requirements for 
> CBUS, based 
> > on work ongoing in OMA.
> >
> > (The most likely protocol output is going to be a new event 
> package, 
> > and some mechanism to provide conditions to the CBUS server).
> >
> > The document can also be found in:
> >
> > 
> http://users.piuha.net/cholmber/drafts/draft-holmberg-dispatch-cbus-00
> > .txt
> >
> > Regards,
> >
> > Christer
> >
> 
> I confess to having lost touch with OMA and that may have 
> contributed, but after reading the draft, I must say I don't get it.
> 
> It seems like some sort of configuration-delivery problem.
> 
> --
> Dean
> 
>