Requiring per application data in session ticket seems wrong

Christian Huitema <huitema@huitema.net> Fri, 13 September 2019 04:52 UTC

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To: IETF QUIC WG <quic@ietf.org>
From: Christian Huitema <huitema@huitema.net>
Subject: Requiring per application data in session ticket seems wrong
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Date: Thu, 12 Sep 2019 21:52:01 -0700
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I am busy implementing draft-23 in picoquic, and I found out the new
section 5.4. of the transport draft, "Required Operations on
Connections".  It is fine, except for the requirements that servers are
able to encode application specific settings in the session resume
tickets. This makes the ticket specific to the combination of SNI +
ALPN, instead of just SNI as implied by RFC 8446. Seems like a bad idea.
More discussion in https://github.com/quicwg/base-drafts/issues/3028.

-- Christian Huitema