1 files changed, 6 insertions, 1 deletions

diff --git a/src/lib/libssl/tls13_handshake.c b/src/lib/libssl/tls13_handshake.c
index aeb490f350..598a7c1666 100644
--- a/src/lib/libssl/tls13_handshake.c
+++ b/src/lib/libssl/tls13_handshake.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: tls13_handshake.c,v 1.28 2019/02/14 18:06:35 jsing Exp $      */
+/*      $OpenBSD: tls13_handshake.c,v 1.29 2019/02/25 16:46:17 jsing Exp $      */
 /*
  * Copyright (c) 2018-2019 Theo Buehler <tb@openbsd.org>
  * Copyright (c) 2019 Joel Sing <jsing@openbsd.org>
@@ -36,6 +36,7 @@ struct tls13_handshake_action {
         uint8_t                 preserve_transcript_hash;
 
         int (*send)(struct tls13_ctx *ctx);
+        int (*sent)(struct tls13_ctx *ctx);
         int (*recv)(struct tls13_ctx *ctx);
 };
 
@@ -93,6 +94,7 @@ struct tls13_handshake_action state_machine[] = {
                 .handshake_type = TLS13_MT_FINISHED,
                 .sender = TLS13_HS_CLIENT,
                 .send = tls13_client_finished_send,
+                .sent = tls13_client_finished_sent,
                 .recv = tls13_client_finished_recv,
         },
         [CLIENT_KEY_UPDATE] = {
@@ -347,6 +349,9 @@ tls13_handshake_send_action(struct tls13_ctx *ctx,
         tls13_handshake_msg_free(ctx->hs_msg);
         ctx->hs_msg = NULL;
 
+        if (action->sent != NULL && !action->sent(ctx))
+                return TLS13_IO_FAILURE;
+
         return TLS13_IO_SUCCESS;
 }