Hi Dale,

ext [EMAIL PROTECTED] wrote:
>    From: Aki Niemi <[EMAIL PROTECTED]>
> 
>    - There is a single authoritative notifier agent responsible for any
>    single resource.
> 
>    - A resource is identified using a SIP URI.
> 
>    - A subscriber subscribes to a resource using the SIP URI.
> 
> Often a subscriber will send the SUBSCRIBE to a URI which is not the
> request-URI of the SUBSCRIBE when it reaches the notifier agent.  This
> happens due to normal SIP request routing, but the routing can also
> change with time.

Correct, but are you saying there might be more than one agent with a
different idea on the entity-tags of entities pertaining to a certain
resource? In other words, that the resource has multiple agents that may
have a different view of the resource state?

I believe this is disallowed per RFC3265 already.

>    - Each entity has an assigned entity-tag.
> 
> Each entity has a succession of versions.  Each version of each entity
> has an assigned entity-tag.

Yes.

>    - There is a one-to-many relationship between an entity and its versions
>    (different etag values, of which only one is current).
> 
>    - An entity-tag must be unique across all versions of all entities from
>    a resource.
> 
> Does this rule out hash-based entity-tags, which are only
> probabalistically unique?

No, I think this MUST statement should probably be followed with an
implementation note that talks about what's reasonably unique in this
context.

Cheers,
Aki


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