On Thu, 23 Jul 2009 08:45:56 +0200
David ‘Bombe’ Roden <[email protected]> wrote:

> On Thursday 23 July 2009 07:10:15 Jonas Bengtsson wrote:
> 
> > SubscribeFeeds
> > Identifier=Arbitrary text string
> 
> > SubscribedFeed
> > Identifier=Identifier of the subscription
> 
> Are the “Identifier” fields in these messages really necessary? Isn’t the 
> “SubscribeFeeds” command somehow equivalent to a “WatchGlobal” (which does 
> not 
> have an identifier)?
> 
> 
>       Bombe

You might be right. The subscription model for feeds is modeled after
the subscription model for bookmark updates. For bookmark updates there
are often many subscription, having an identifier makes it easy for the
client to differentiate between bookmark updates. For feeds there are
usually only one subscriber.

Several feed subscriptions per client would only make sense if the
subscriptions could be made more granular. An instant messaging client
might for example only be interested in receiving text messages and
file offers(not finished yet). Is it worth the effort to implement more
granular subscriptions or should I make it behave as WatchGlobal and
remove the identifier?

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