From 10c8a1668e27d0a9c412666fe2fdf61b01bbcb98 Mon Sep 17 00:00:00 2001
From: Juliusz Sosinowicz <juliusz@wolfssl.com>
Date: Mon, 4 Jul 2022 12:52:25 +0200
Subject: [PATCH] Reset cookie when resetting DTLS 1.3 state

---
 src/tls13.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/src/tls13.c b/src/tls13.c
index 73a34e539..e86026867 100644
--- a/src/tls13.c
+++ b/src/tls13.c
@@ -10834,6 +10834,8 @@ int wolfSSL_accept_TLSv13(WOLFSSL* ssl)
                     ssl->keys.dtls_handshake_number = 0;
 
                     ssl->msgsReceived.got_client_hello = 0;
+                    /* Remove cookie so that it will get computed again */
+                    TLSX_Remove(&ssl->extensions, TLSX_COOKIE, ssl->heap);
 
                     /* Reset states */
                     ssl->options.serverState = NULL_STATE;