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BUG/MEDIUM: quic: Don't try to use hystart if not implemented

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Not every CC algos implement hystart, so only call the method if it is
actually there. Failure to do so will cause crashes if hystart is on,
and the algo doesn't implement it.

This should fix github issue #3218

This should be backported up to 3.0.
This commit is contained in:
Olivier Houchard 2025-12-14 16:10:21 +01:00 committed by Olivier Houchard
parent 54e58103e5
commit a08bc468d2
1 changed files with 2 additions and 1 deletions
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3
src/quic_tx.c
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@ -439,7 +439,8 @@ static int qc_send_ppkts(struct buffer *buf, struct quic_conn *qc)
}
qc->path->in_flight += pkt->in_flight_len;
pkt->pktns->tx.in_flight += pkt->in_flight_len;
if (quic_tune_test(QUIC_TUNE_FB_CC_HYSTART, qc) && pkt->pktns == qc->apktns)
if (quic_tune_test(QUIC_TUNE_FB_CC_HYSTART, qc) && pkt->pktns == qc->apktns &&
cc->algo->hystart_start_round != NULL)
cc->algo->hystart_start_round(cc, pkt->pn_node.key);
if (pkt->in_flight_len)
qc_set_timer(qc);