From 05420b120b5a529a246f301492434c139b6ae403 Mon Sep 17 00:00:00 2001 From: XiaokangQian Date: Wed, 29 Sep 2021 08:46:37 +0000 Subject: [PATCH] TLS1.3: Add useful comments based on RFC8446 Signed-off-by: XiaokangQian --- library/ssl_tls13_generic.c | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/library/ssl_tls13_generic.c b/library/ssl_tls13_generic.c index f7112332f2..99ab2695d3 100644 --- a/library/ssl_tls13_generic.c +++ b/library/ssl_tls13_generic.c @@ -46,11 +46,18 @@ int mbedtls_ssl_tls1_3_fetch_handshake_msg( mbedtls_ssl_context *ssl, { MBEDTLS_SSL_DEBUG_MSG( 1, ( "Receive unexpected handshake message." ) ); MBEDTLS_SSL_PEND_FATAL_ALERT( MBEDTLS_SSL_ALERT_MSG_UNEXPECTED_MESSAGE, - MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); + MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE ); ret = MBEDTLS_ERR_SSL_UNEXPECTED_MESSAGE; goto cleanup; } + /* + * Jump handshake header (4 bytes, see Section 4 of RFC 8446). + * ... + * HandshakeType msg_type; + * uint24 length; + * ... + */ *buf = ssl->in_msg + 4; *buflen = ssl->in_hslen - 4;