From: Libor Peltan <libor.peltan@nic.cz>
Date: Fri, 14 Jul 2023 13:31:10 +0000 (+0200)
Subject: quic: bugfix: don't send multiple packets on 0RTT
X-Git-Tag: v3.4.dev~67^2
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=c05ec590bd3cf5c19643a10d84236b25cdb17922;p=thirdparty%2Fknot-dns.git

quic: bugfix: don't send multiple packets on 0RTT
---

diff --git a/src/libknot/quic/quic.c b/src/libknot/quic/quic.c
index f03d9087a8..a2b8ea9ff5 100644
--- a/src/libknot/quic/quic.c
+++ b/src/libknot/quic/quic.c
@@ -1130,6 +1130,10 @@ int knot_quic_send(knot_quic_table_t *quic_table, knot_quic_conn_t *conn,
 		return KNOT_EOK;
 	}
 
+	if (!conn->handshake_done) {
+		max_msgs = 1;
+	}
+
 	unsigned sent_msgs = 0, stream_msgs = 0;
 	int ret = 1;
 	for (int64_t si = 0; si < conn->streams_count && sent_msgs < max_msgs; /* NO INCREMENT */) {