Re: [Partysip-dev] clarify presence queries...

[Aymeric Moizard]

On Thu, 24 Apr 2003, [iso-8859-1] ratish_trn3 wrote:

> hi everybody,
>
>    it'd be great if some one cud help me with the
> following...pertaining to presence service....
>
> 1. Can a presentity construct a PUBLISH message for multiple watchers as soon 
> as he receives a NOTIFY (winfo)?
>
>                    if yes, how will it  differentiate tuples for watchers...? 
> as no documents show watcher - id's included in
>                                 PUBLISH  messages .
>                     if no, will it issue individual PUBLISH messages after 
> receiving  watcher list in the NOTIFY (winfo) from
>                                presence server. In this case, does it make 
> use of the facet header to identify watchers in case of
>                                individual PUBLISH messages ?

Don't know much about the PUBLISH method. Sorry.

> 2. How will the watcher decide on which tuple to consider when he
> receives a NOTIFY message with two tuple id's as given in
> draft-ietf-simple-publish-00.txt document as follows....

same.

> 3. When a watcher wishes to unsubscibe he sends a SUBSCRIBE message
> with expires value 0. How do we differentiate if it's a unsubscirbe or
> a fetch ???

a SUBSCRIBE with 0 close the subscription and you'll get a new NOTIFY.
(so it's also a fetch)

A simple fetch is a SUBSCRIBE with an expires set to a greater value.

>      In the case of a unsubscribe, will the NOTIFY message sent by the
> presence server contain a xml document giving status of presentity...?
> or will it just give the value terminated in the header ???

I think it should contain the xml document.
Aymeric

> 4. Will there be an expires header in the SUBSCRIBE (winfo)  request
> sent by presentity...? If no expires is present will the presece
> server assumes a default of 3600 ??? ------> now after the 3600 i.e.,
> the presentity's subscription has expired...!! the presentity will no
> longer receive any notifications unless or until it subscribes
> again....but will the presentity be able to send PUBLISH
> messages...even after it's SUBSCRIBE (winfo) has expired....?
>
>
>
> thanks in advance,
> regards,
> ratish.
>
>