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Re: Question on new PUT section

From: Roy T. Fielding <fielding@gbiv.com>
Date: Fri, 11 Mar 2011 12:20:25 -0800
Cc: Robert Brewer <fumanchu@aminus.org>, HTTP Working Group <ietf-http-wg@w3.org>
Message-Id: <01987363-DD63-438D-90F7-22F703F77D01@gbiv.com>
To: Julian Reschke <julian.reschke@gmx.de>
On Mar 11, 2011, at 11:54 AM, Julian Reschke wrote:
> On 11.03.2011 20:45, Roy T. Fielding wrote:
>> On Mar 11, 2011, at 10:59 AM, Robert Brewer wrote:
>>> http://trac.tools.ietf.org/wg/httpbis/trac/changeset/1158
>>> modified section 7.6.p.5 to say:
>>> "For example, if the target resource is configured to always
>>> have a Content-Type of "text/html" and the representation being
>>> PUT has a Content-Type of "image/jpeg", then the origin server
>>> SHOULD do one of: (a) reconfigure the target resource to
>>> reflect the new media type; (b) transform the PUT representation
>>> to a format consistent with that of the resource before saving
>>> it as the new resource state; or, (c) reject the request with a
>>> 409 response indicating that the target resource is limited to
>>> "text/html", perhaps including a link to a different resource
>>> that would be a suitable target for the new representation.
>>> Roy, can you explain why 409 is a better choice than 415 in case (c)?
>> It is just a slight preference for uniform handling of PUT
>> (409 is also used by webdav, IIRC).  415 was created for POST
> ...WebDAV does use 409 in several places, but it doesn't say anything specific about PUT. (as far as I recall)
>> handling processes.  It could go either way for this example.
>> Anyone know of implementations that do this kind of error?
> I believe Spring/Rest will return 415 if the media type isn't accepted.

Ah, ugh, did I really need to look at that?


The exception is from the Jersey annotation support, so it might
apply to both POST and PUT.  I guess that means the example should
use 415 and the text above it should say to respond with 409 or 415,
as appropriate. 

Received on Friday, 11 March 2011 20:20:54 UTC

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