RE: [EXTERNAL] Re: Alt-SvcB

Tommy Jensen <Jensen.Thomas@microsoft.com> Wed, 26 October 2022 17:04 UTC

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From: Tommy Jensen <Jensen.Thomas@microsoft.com>
To: Martin Thomson <mt@lowentropy.net>, David Schinazi <dschinazi.ietf@gmail.com>
CC: "ietf-http-wg@w3.org" <ietf-http-wg@w3.org>
Thread-Topic: [EXTERNAL] Re: Alt-SvcB
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Date: Wed, 26 Oct 2022 17:00:38 +0000
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Subject: RE: [EXTERNAL] Re: Alt-SvcB
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I agree with the point of "deprecation" meaning "please use Alt-SvcB for future alt-svc uses" and not "immediately stop using its predecessors" however that needs to be appropriately phrased.

> Can somebody quantify the relative proportion of clients that can't do HTTPS RR?

Windows supports SVCB but not HTTPS at the moment, but that will change in a future release. Browsers of course tend to support far older OS versions than we prefer to backport changes to, which will not be a unique situation among OS platforms. This just lends to the statement about what "deprecation" means.

Thanks,
Tommy