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RE: HOW_TO_IDENTIFY_LOCK_OWNER

From: <gclemm@rational.com>
Date: Mon, 28 Jan 2002 14:42:09 -0500
Message-ID: <3906C56A7BD1F54593344C05BD1374B103F8AF24@SUS-MA1IT01>
To: w3c-dist-auth@w3c.org
   From: Jason Crawford [mailto:ccjason@us.ibm.com]

   Julian proposes a second field for information called DAV:lockowner
   that is a child of DAV:lockinfo.  The field is authored by the
   client and simply stored unmodifed by the server.  Julian has
   defined it in such a way that it's clear what "unmodified" means.

   Old clients will write to DAV:owner only.  Not to the new field.
   New clients presumably will write to both the old deprecated
   DAV:owner and the new DAV:lockowner.

Or if they don't care about old clients that depend on DAV:owner, they
will just write to DAV:lockowner (DAV:owner was always optional, and
so should be DAV:lockowner)

   New servers will (attempt to) preserve both fields.

Yes.

   What will old servers do if they receive a lock info with the new
   DAV:lockowner field but not the old DAV:owner field?  What will old
   servers do if the client provides both?

In either case, they must ignore the DAV:lockowner field, since that
is what WebDAV requires (ignore unknown elements).

   Do some of the interop folks know how
   current "old" servers are coded?

Not me, but if they have a "bug" (i.e. they choke on unknown
fields coming in from LOCK), that shouldn't stop us from evolving
WebDAV in the way it was intended to be evolved.

Cheers,
Geoff
Received on Monday, 28 January 2002 14:43:13 GMT

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