Re: Alt-Svc across a domain?

[Erik Nygren <[e-mail]>]

I'd agree.  I also think that without a better Domain Boundaries solution
that is much better than what we have today this has the potential to make
a big mess.  In my experience, there seems to be a wide mixture of origins
within the domain which *aren't* served from the same infrastructure.  eg,
it's very common to use a mix of different CDNs or hosting providers for
different origins within a domain.  This is even before you get to things
like "support.example.com" and "investor-relations.example.com" which might
be CNAME'd over to third-party SaaS providers.

       Erik

On Fri, Apr 8, 2016 at 3:01 PM, Patrick McManus <[e-mail]>
wrote:

>
>
> On Fri, Apr 8, 2016 at 2:31 PM, Ryan Hamilton <[e-mail]> wrote:
>
>> Howdy,
>>
>> It is common for web sites to serve content from a variety of different
>> origins within the same domain. For example, www.example.com,
>> accounts.example.com, images.example.com. A single page view may require
>> loading resources from several such origins. (Tricks like domain sharing
>> can exacerbate this proliferation of origins.) It would be great if the
>> service had some way to tell the client, "All of my domains can use this
>> alternative service". What would folks thinks of an include-subdomains
>> parameter in the Alt-Svc value? If such a parameter were present in an
>> Alt-Svc advertisement, a client could use this advertisement to apply to
>> any sub-domain of the origin that the client does not already have an
>> alternative for. This would avoid the need to discover the alternatives
>> individually.
>>
>>
> the server can send, unsolicited, on stream 0 an altsvc frame for each
> origin it wants to provide alt-svc info for (the connection needs to be
> authoritative for those origins, of course).
>
> yesterday's discussion of adding certificates to an established connection
> would make that more powerful.
>
> I would encourage h1 servers to update to h2 to get this feature :)
>
> -P
>
>
>
>> Cheers,
>>
>> Ryan
>>
>
>