- From: Julian Reschke <julian.reschke@gmx.de>
- Date: Thu, 14 Nov 2002 13:26:31 +0100
- To: <ietf-http-wg@w3.org>
Hi. In section 3.11 [1], RFC2616 states: "A "weak entity tag," indicated by the "W/" prefix, MAY be shared by two entities of a resource only if the entities are equivalent and could be substituted for each other with no significant change in semantics. A weak entity tag can only be used for weak comparison." In 13.3.3 [2], it gives the following example: "An entity's modification time, if represented with one-second resolution, could be a weak validator, since it is possible that the resource might be modified twice during a single second." Apache moddav indeed returns weak entity tags based on a filesystem timestamp. However, as far as I understand there's no guarantee whatsoever that two entities written within one second indeed can "be substituted for each other with no significant change in semantics". So is this a bug or am I missing something important? Julian [1] <http://greenbytes.de/tech/webdav/rfc2616.html#rfc.section.3.11> [2] <http://greenbytes.de/tech/webdav/rfc2616.html#rfc.section.13.3.3> -- <green/>bytes GmbH -- http://www.greenbytes.de -- tel:+492512807760
Received on Thursday, 14 November 2002 07:27:03 UTC