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Standard for upgrading based on URL?

From: Felipe Gasper <felipe@felipegasper.com>
Date: Tue, 12 Oct 2021 13:28:40 -0400
Message-Id: <D594C4EA-B53A-482A-A220-680A99B25716@felipegasper.com>
To: HTTP Working Group <ietf-http-wg@w3.org>
Hello,

	Is there any way, per currently-published standards, to upgrade a TLS connection from HTTP/1 to H2 based on its URL? e.g.:

https://example.com/http1   <-- served via HTTP/1

https://example.com/http2   <-- served via HTTP/3

	This is possible with non-TLS via normal HTTP upgrades but doesn’t appear to be possible via the ALPN approach mandated for TLS-secured HTTP/2 connections. It seems strange that there would be no way to do over TLS what’s easy to do in plain text. What am I missing?

	Thank you!

-FG
Received on Tuesday, 12 October 2021 17:27:39 UTC

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