chromium — CANCEL_PUSH for a push ID that was never promised

Fail

Rejected, but with error 0x106 where the specification requires 0x108. The violation was detected; the code reported is wrong.

The client did something the clause forbids, or failed to do what it requires.

What was measured

Client

chromium — Chromium QUICHE, build 1223

Test

CANCEL_PUSH for a push ID that was never promised — h-cancel-push-unsolicited

Clause

RFC 9114 §7.2.3 (MUST)

Class

correctness — Rejected something invalid, with the code the RFC names.

Required behaviour

Close the connection with H3_ID_ERROR. No MAX_PUSH_ID was granted, so every push ID is greater than currently allowed, and §7.2.3 requires a CANCEL_PUSH referencing one to be treated as a connection error of that type.

Measured

2026-09-17

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=$(curl -sX POST https://conformance.pqcrypta.com/session | jq -r .id)
# then drive chromium at the test URL and read the verdict:
curl -s https://conformance.pqcrypta.com/report/$SESSION.json | jq '.results["h-cancel-push-unsolicited"]'