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Re: [xmpp] 3921bis: probe + unavailable

Dave Cridland <dave@cridland.net> Thu, 28 January 2010 22:07 UTC

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Date: Thu, 28 Jan 2010 22:08:13 +0000
From: Dave Cridland <dave@cridland.net>
To: "bschumac@cisco.com" <bschumac@cisco.com>, XMPP Working Group <xmpp@ietf.org>
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Subject: Re: [xmpp] 3921bis: probe + unavailable
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On Thu Jan 28 21:57:53 2010, Ben Schumacher wrote:
> As the person responsible for the offlist poking, I feel I should  
> step up and point out that stamping delay constitutes a presence  
> leak. If I had a privacy list that blocked you, Dave, from  
> receiving my presence while I'm online then I got offline and the  
> server then decides to respond to probes that indicate when I was  
> last online, you now know that I was online and trying to hide that  
> fact from you.
> 
> 
Yuck. Yes, and if you just noted that sometimes the server did  
include useful data, and sometimes it didn't, then you'd know whether  
the contact had been (or still is) online with a privacy list active.

How horrible that we need to throw away a perfectly good bit of  
functionality to satisfy privacy lists.

Dave.
-- 
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