Re: i37: Vary and non-existant headers

Mark Nottingham wrote:
>> I think it would be better to say: "For each request URI, an origin 
>> server
>> SHOULD return the same Vary header field value for every request." In 
>> this
>> way, the Vary header is not just a response header but a "resource 
>> header".
> 
> That is exactly how Vary doesn't work, and the interpretation that we're 
> trying to avoid.

Right.

>> Clients, intermediaries, and servers should always be able to 
>> canonicalize
>> headers in any situation. Putting a specific statement about it here 
>> imples
>> there are some cases in which canonicalization is not allowed. I suggest
>> leaving this part out.
> 
> Enough people have had questions about this that it's worthwhile calling 
> out explicitly, AFAICT.
> 
> Others?


I'd put it in; but maybe the topic could be mentioned in a more generic 
context again.

BR, Julian