Re: Confused by DAA's messages. Please explain

On Jul 8, 2013, at 18:40 , "Roy T. Fielding" <fielding@gbiv.com> wrote:

> By testing the behavior of the client. For example, it takes about five minutes to determine that IE10 violates those semantics. IE11 could fix that easily.

I think you may be able to determine by inspection that a user-agent has a default, in violation of the spec.  Is that what you mean?

I don't think you can determine which users explicitly confirmed that setting, and want it, which I think is your paragraph below.

> 
> David, I am not interested in the philosophical discussion about whether a user might have set the option. Any client that sends a preference when no such preference has been set will be ignored, just like we ignore other fields that have been incorrectly implemented, until it has been shown to be fixed by a new release or the field definition matches the implementation. To do otherwise would encourage the incorrect implementation of open Web standards. 
> 
> ....Roy
> 
> 
> On Jul 8, 2013, at 7:10 AM, David Singer <singer@apple.com> wrote:
> 
>> 
>> On Jul 8, 2013, at 2:36 , "Roy T. Fielding" <fielding@gbiv.com> wrote:
>> 
>>> On Jul 6, 2013, at 5:29 PM, David Singer wrote:
>>>> On Jul 6, 2013, at 10:20 , Roy T. Fielding <fielding@gbiv.com> wrote:
>>>> 
>>>>> I can't speak to the DAA proposal (having not even read it yet while on vacation), but I can say that I will continue disregarding semantically invalid HTTP signals no matter what anyone else's opinion might be.
>>>> 
>>>> syntactically invalid I understand.  
>>>> 
>>>> what do you mean by 'semantically invalid'?  contradictory?  or you believe I don't mean what I am saying?  or something else?
>>> 
>>> DNT:1 has a defined semantic.  If it is sent by a client when that
>>> semantic is not true, then it is an invalid use of HTTP.
>> 
>> And which semantics can be ascertained to be true or not, remotely?  I am genuinely curious.
>> 
>>> 
>>> ....Roy
>> 
>> David Singer
>> Multimedia and Software Standards, Apple Inc.
>> 

David Singer
Multimedia and Software Standards, Apple Inc.

Received on Monday, 8 July 2013 18:00:09 UTC