Ignored the unrecognised element and completed the follow-up request.
The client did what the clause requires.
What was measured
- Client
- quic-go — quic-go, quic-go v0.61.0
- Test
- Reserved SETTINGS identifier (0x1f·N+0x21) —
h-grease-settings - Clause
- RFC 9114 §7.2.4.1 (MUST)
- Class
- extensibility — Ignored something unknown and carried on.
- Required behaviour
- Ignore the unknown setting and complete the request.
- Measured
- 2026-09-18
Reproduce it
The suite is the judge, so the reproduction is to point the same client at the same test and let the server report what it saw.
SESSION=$(curl -sX POST https://conformance.pqcrypta.com/session | jq -r .id)
# then drive quic-go at the test URL and read the verdict:
curl -s https://conformance.pqcrypta.com/report/$SESSION.json | jq '.results["h-grease-settings"]'