MINOR: quic: Send two ack-eliciting packets when probing packet number spaces
This is to avoid too much PTO timer expirations for 01RTT and Handshake packet
number spaces. Furthermore we are not limited by the anti-amplication for 01RTT
packet number space. According to the RFC we can send up to two packets.
diff --git a/src/xprt_quic.c b/src/xprt_quic.c
index f56ea0c..e5b7c7d 100644
--- a/src/xprt_quic.c
+++ b/src/xprt_quic.c
@@ -3394,11 +3394,14 @@
st = HA_ATOMIC_LOAD(&qc->state);
if (qc->path->in_flight) {
pktns = quic_pto_pktns(qc, st >= QUIC_HS_ST_COMPLETE, NULL);
- if (qc_is_listener(qc) &&
- pktns == &qc->pktns[QUIC_TLS_PKTNS_HANDSHAKE] &&
- qc->pktns[QUIC_TLS_PKTNS_INITIAL].tx.in_flight)
- qc->pktns[QUIC_TLS_PKTNS_INITIAL].tx.pto_probe = 1;
- pktns->tx.pto_probe = 1;
+ if (pktns == &qc->pktns[QUIC_TLS_PKTNS_INITIAL]) {
+ pktns->tx.pto_probe = 1;
+ if (qc->pktns[QUIC_TLS_PKTNS_HANDSHAKE].tx.in_flight)
+ qc->pktns[QUIC_TLS_PKTNS_HANDSHAKE].tx.pto_probe = 1;
+ }
+ else {
+ pktns->tx.pto_probe = 2;
+ }
}
else if (!qc_is_listener(qc) && st <= QUIC_HS_ST_COMPLETE) {
struct quic_enc_level *iel = &qc->els[QUIC_TLS_ENC_LEVEL_INITIAL];