Correctly propagate EOF from BIO in tls13_legacy_wire_read().

ok tb@

1 files changed, 3 insertions, 1 deletions

diff --git a/src/lib/libssl/tls13_lib.c b/src/lib/libssl/tls13_lib.c
index d8a22c8fc7..0151395be8 100644
--- a/src/lib/libssl/tls13_lib.c
+++ b/src/lib/libssl/tls13_lib.c
@@ -1,4 +1,4 @@
-/*      $OpenBSD: tls13_lib.c,v 1.5 2019/02/23 15:00:44 jsing Exp $ */
+/*      $OpenBSD: tls13_lib.c,v 1.6 2019/02/26 17:36:30 jsing Exp $ */
 /*
  * Copyright (c) 2018, 2019 Joel Sing <jsing@openbsd.org>
  *
@@ -141,6 +141,8 @@ tls13_legacy_wire_read(SSL *ssl, uint8_t *buf, size_t len)
                         return TLS13_IO_WANT_POLLIN;
                 if (BIO_should_write(ssl->rbio))
                         return TLS13_IO_WANT_POLLOUT;
+                if (n == 0)
+                        return TLS13_IO_EOF;
 
                 return TLS13_IO_FAILURE;
         }