Tim Perry 09f5aae93b quic: reuse TLS pause machinery to drop event deferral & improve 0RTT ...

With this change, the TLS pause mechanisms used in node:tls are now made
generic, and used in QUIC to pause the handshake entirely for the
session event, thereby stopping almost all events being emitted
(everything except qlog) so that all the previously existing deferral
machinery is unnecessary.

This is useful immediately to clean up & simplify things, but also
medium term because this makes the 0RTT flow significantly clearer,
which will help with the upcoming dynamic attach for QUIC (which
requires deferring ticket processing & 0RTT delivery until after
user code).

As part of this, this changes the internal flow of how ALPN & SNI are
resolved. Instead of calculating them synchronously within the OpenSSL
callbacks, we precalculate them at the pause, and then the OpenSSL
callbacks just return the precalculated values.

This is intended to only create visible changes to node:quic. Though it
touches node:tls, it preserves all existing behaviour (including
callback order and other details).

Signed-off-by: Tim Perry <pimterry@gmail.com>
PR-URL: https://github.com/nodejs/node/pull/65522
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Filip Skokan <panva.ip@gmail.com>

2026-09-02 10:00:05 +00:00

..

h3-request.js

quic: reuse TLS pause machinery to drop event deferral & improve 0RTT

2026-09-02 10:00:05 +00:00

handshake.js

quic: reuse TLS pause machinery to drop event deferral & improve 0RTT

2026-09-02 10:00:05 +00:00