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Re: WebDAV sync informal last call

From: Cyrus Daboo <cyrus@daboo.name>
Date: Mon, 18 Apr 2011 10:16:30 -0400
To: Werner Donné <werner.donne@pincette.biz>, Arnaud Quillaud <arnaud.quillaud@oracle.com>
cc: w3c-dist-auth@w3.org
Message-ID: <7B3676D3556CC847BF563542@caldav.corp.apple.com>
Hi Werner,

--On April 15, 2011 10:32:57 PM +0200 Werner Donné 
<werner.donne@pincette.biz> wrote:

> No strong opinion on this. Might 403 be returned for other reasons ?
>
>
>
> It is a code that is used in general to indicate that something is not
> allowed, for whatever reason. Using this code wouldn't "twist" anything.
>

I think we do need to distinguish the specific problem being dealt with 
here: namely that a depth:infinity sync cannot "traverse" into a specific 
collection. I would be willing to change the 405 to a 403, with the proviso 
that a DAV:error element MUST also be returned and that MUST contain a 
DAV:supports-parent-depth-infinity-sync element. That way clients can clear 
distinguish between this case and other types of 403.

> <<
>  The 405 response MUST be sent only during an initial synchronization (as
> defined in 3.4).  >>
>
> be more clear ?
>
>
>
> Yes.

That statement about the "405" case is not entirely true. If such a 
collection is created after the initial sync on one of its parents, then it 
will need to be reported in the "405" state on the next sync of that 
parent. I think the current text accurately describes the situation:

    The 405 response MUST be sent once, when the collection is first
    reported to the client.


-- 
Cyrus Daboo
Received on Monday, 18 April 2011 14:17:02 GMT

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