tls13: early data: Improve, add comments
Signed-off-by: Ronald Cron <ronald.cron@arm.com>
diff --git a/library/ssl_msg.c b/library/ssl_msg.c
index 3547f67..20501c9 100644
--- a/library/ssl_msg.c
+++ b/library/ssl_msg.c
@@ -5873,6 +5873,10 @@
return MBEDTLS_ERR_SSL_BAD_INPUT_DATA;
}
+ /*
+ * The server may receive early data only while waiting for the End of
+ * Early Data handshake message.
+ */
if ((ssl->state != MBEDTLS_SSL_END_OF_EARLY_DATA) ||
(ssl->in_offt == NULL)) {
return MBEDTLS_ERR_SSL_CANNOT_READ_EARLY_DATA;