[JDEV] Avatar problem with clearing the picture

temas temas at box5.net
Fri Sep 7 10:05:11 CDT 2001

On Thu, 2001-09-06 at 12:57, Jens Alfke wrote:
> I believe there is a glitch in one aspect of the avatar proposal. 
> There's an explicit mechanism to cancel the avatar icon by sending an 
> empty 'jabber:x:avatar' extension with no hash. This implies that if the 
> extension isn't given at all, the icon is not canceled/cleared (since 
> otherwise it would be simpler to cancel the icon just by not including 
> the extension at all.)
> However, I think this is incorrect. The reason is that if you first send 
> presence with an avatar hash, and then later send presence with no 
> extension -- thus continuing the same avatar picture -- only the second 
> presence element will get sent to people who come online afterwards. 
> These people will not see any avatar hash and will not know whether 
> you've set a picture or whether any previously cached picture is still 
> valid.
> Therefore I suggest that we use the absence of the 'jabber:x:avatar' 
> extension to indicate canceling the avatar picture. The extension with 
> missing <hash> sub-element would not be valid. The change to the 
> existing spec is to remove the <x> element from the example following 
> "User disables their icon:".
> Agreed?
> --Jens
> PS: For those just tuning in, the proposal is at 
> <http://core.jabber.org/avatar.txt>.
> _______________________________________________
> jdev mailing list
> jdev at jabber.org
> http://mailman.jabber.org/listinfo/jdev

I agree... I'm updating the spec on core now, so check it in about 15-30
and look for any more changes.  Also feel free to msg me, JID:
temas at jabber.org.


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