Re: Using server-driven negotiation

On Dec 8, 2007, at 1:39 PM, Jamie Lokier wrote:

> Subbu Allamaraju wrote:
>>
>>   I have a question. Is the server required to supply a Vary header  
>> when
>>   it did not actually vary the current response?
>>
>>   In the example below, in the absence of a header line
>>   Accept-Geo-Position in the request, the server may be returning a
>>   generic response. In this case, I would assume that the server will
>>   not set the Vary header. I am unable to find any reference to  
>> this in
>>   2616. Hence the question.
>
> You said the server returns a generic reponse, and it does not vary
> the response.
>
> Well, does the server supply a different response when there is an
> Accept-Geo-Position in the request?
>
> If it does, that _is_ varying the response, and you've contradicted
> yourself, and it should use the Vary header.

I see. The "generic" itself is a varied form.

Subbu