From: Frederic Lecaille <flecaille@haproxy.com>
Date: Sat, 2 Aug 2025 08:28:38 +0000 (+0200)
Subject: MINOR: quic-be: allow the preparation of 0-RTT packets
X-Git-Tag: v3.3-dev13~39
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=ac1d3eba881522b9652ed603f88df06baa5124c8;p=thirdparty%2Fhaproxy.git

MINOR: quic-be: allow the preparation of 0-RTT packets

A QUIC server never sends 0-RTT packets contrary to the client.

This very simple modification allow the the preparation of 0-RTT packets
with early data as encryption level (->eel).
---

diff --git a/src/quic_tx.c b/src/quic_tx.c
index 421dba86c..2c1eb87c6 100644
--- a/src/quic_tx.c
+++ b/src/quic_tx.c
@@ -626,7 +626,7 @@ static int qc_prep_pkts(struct quic_conn *qc, struct buffer *buf,
 		struct quic_enc_level *next_qel;
 		int probe, must_ack;
 
-		if (qel == qc->eel) {
+		if (!qc_is_back(qc) && qel == qc->eel) {
 			/* Next encryption level */
 			continue;
 		}