msquic — Response stream reset mid-body with H3_REQUEST_CANCELLED

Pass

Tolerated it and continued. The specification permits this but does not require it; a client that rejected it would also be conformant.

The client did what the clause requires.

What was measured

Client

msquic — .NET HttpClient + msquic, 2.7.0

Test

Response stream reset mid-body with H3_REQUEST_CANCELLED — h-response-stream-reset

Clause

RFC 9114 §8, §4.1 (MAY)

Class

discretionary — The RFC permits either behaviour; the report says which was chosen.

Required behaviour

Abandon the partial response — §4.1 says a response cancelled after a partial delivery "SHOULD NOT be used". Whether the connection survives is the client's to choose: §8 lets an endpoint "treat a stream error as a connection error under certain circumstances", so keeping the connection and closing it are both conformant. Stalling is the one wrong answer.

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