From a56054e438d6ec8cda222592b2ce16e5153d4a7d Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fr=C3=A9d=C3=A9ric=20L=C3=A9caille?= <flecaille@haproxy.com>
Date: Fri, 31 Dec 2021 16:35:28 +0100
Subject: [PATCH] MINOR: quic: Probe several packet number space upon timer
 expiration

When the loss detection timer expires, we SHOULD include new data in
our probing packets (RFC 9002 par 6.2.4. Sending Probe Packets).
---
 src/xprt_quic.c | 13 ++++++++++++-
 1 file changed, 12 insertions(+), 1 deletion(-)

diff --git a/src/xprt_quic.c b/src/xprt_quic.c
index 3152f27d3..9ab675c1d 100644
--- a/src/xprt_quic.c
+++ b/src/xprt_quic.c
@@ -3302,7 +3302,7 @@ static struct task *process_timer(struct task *task, void *ctx, unsigned int sta
 	struct ssl_sock_ctx *conn_ctx;
 	struct quic_conn *qc;
 	struct quic_pktns *pktns;
-	int st;
+	int i, st;
 
 	conn_ctx = task->context;
 	qc = conn_ctx->qc;
@@ -3338,6 +3338,17 @@ static struct task *process_timer(struct task *task, void *ctx, unsigned int sta
 		if (iel->tls_ctx.rx.flags == QUIC_FL_TLS_SECRETS_SET)
 			iel->pktns->tx.pto_probe = 1;
 	}
+
+	for (i = QUIC_TLS_ENC_LEVEL_INITIAL; i < QUIC_TLS_ENC_LEVEL_MAX; i++) {
+		int j;
+
+		if (i == QUIC_TLS_ENC_LEVEL_APP && !quic_peer_validated_addr(qc))
+		    continue;
+
+		for (j = 0; j < qc->els[i].pktns->tx.pto_probe; j++)
+			qc_prep_fast_retrans(&qc->els[i], qc);
+	}
+
 	tasklet_wakeup(conn_ctx->wait_event.tasklet);
 	qc->path->loss.pto_count++;