From 0dbfd88edd89a9fb5412b434f88ed868e031ed8c Mon Sep 17 00:00:00 2001
From: kenstir <kenstir@gmail.com>
Date: Tue, 22 Jun 2021 12:59:29 -0400
Subject: [PATCH] Fix #298 (#299)

Handle SSL_get_current_cipher returning NULL
---
 src/liblsquic/lsquic_enc_sess_ietf.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/src/liblsquic/lsquic_enc_sess_ietf.c b/src/liblsquic/lsquic_enc_sess_ietf.c
index fad9919..2773d48 100644
--- a/src/liblsquic/lsquic_enc_sess_ietf.c
+++ b/src/liblsquic/lsquic_enc_sess_ietf.c
@@ -2568,7 +2568,7 @@ iquic_esf_keysize (enc_session_t *enc_session_p)
     else if (enc_sess->esi_ssl)
     {
         cipher = SSL_get_current_cipher(enc_sess->esi_ssl);
-        id = SSL_CIPHER_get_id(cipher);
+        id = cipher ? SSL_CIPHER_get_id(cipher) : 0;
 
         /* RFC 8446, Appendix B.4 */
         switch (id)