Re: Preference-Applied Response Header

[Julian Reschke <[e-mail]>]

On 2013-03-07 17:29, Ken Murchison wrote:
> Julian Reschke wrote:
>> On 2013-03-07 15:32, Ken Murchison wrote:
>>> All,
>>>
>>> Its not overly important, but as I was coding this up, I started
>>> wondering how to categorize this response header in httpbis-22 terms.
>>> Would this header be considered part of Control Data, Response Context,
>>> Representation Metadata, or something else?  Right now, I'm leaning
>>> towards Control Data since Prefer is similar to Expect which is
>>> categorized as a Control.
>>>
>>> And while we're at it, what about these WebDAV response headers:
>>>
>>> DAV: similar to Allow => Response Context?
>>
>> Si.
>>
>>> Lock-Token: used in conditional requests => Validator?
>>
>> Nope, lock tokens (for the purpose of validation) are passed using
>> "If"...
>
> Unless I'm missing something, doesn't the presence of "if" make a method
> conditional?  The execution of state-changing method on a locked

Yes.

> resource is conditional upon validation of the correct lock-token in the
> "If" header (or "Lock-Token" in the case of UNLOCK).

Yes, for "If". No for "Lock-Token"; it's simply a parameter of the 
UNLOCK request (otherwise 422 would be correct when an incorrect 
lock-token is passed to UNLOCK).

Best regards, Julian