Re: How to reset ALTSVC

On Wed, Apr 1, 2015 at 9:24 AM, Martin Thomson <martin.thomson@gmail.com>
wrote:

> On 1 April 2015 at 05:11, Bence Béky <bnc@chromium.org> wrote:
> > I think the simplest way to say "the alternative services for this
> > origin is the following list: {empty list}" is to say "{empty list}"
> > instead of "{one item identical to origin, which is understood to have
> > the special meaning that it's an empty list}" or "{one item with valid
> > but arbitrary port and a special, otherwise unused value for ma, which
> > is understood to have the special meaning that it's an empty list}".
>
> That argument only makes sense if you don't consider the origin to be
> a validate alternative.  That it's implicit and always present isn't
> of much consequence.
>

That's surprising to me. As I read the spec, Alt-Svc is all about
specifying *different* ways to reach a server:

   ...document specifies "alternative services" for HTTP, which allow
   an origin's resources to be authoritatively available at a separate
   network location


To me, that does not imply that the origin is present in the list of
alternatives. If the origin is implicitly in that list, should Alt-Svc-Used
be sent when using it? That doesn't seem reasonable to me, which makes me
think that the origin really isn't implicitly part of the Alt-Svc list.

Am I thinking about this the wrong way?

Cheers,

Ryan