SSL_SESSION_get_protocol_version - retrieve session protocol version
#include <openssl/ssl.h>
int SSL_SESSION_get_protocol_version(const SSL_SESSION *s);
SSL_SESSION_get_protocol_version() returns the protocol version number used by session s.
SSL_SESSION_get_protocol_version() returns a number indicating the protocol version used for the session; this number matches the constants e.g. TLS1_VERSION or TLS1_2_VERSION.
Note that the SSL_SESSION_get_protocol_version() function does not perform a null check on the provided session s pointer.
HISTORY
SSL_SESSION_get_protocol_version() was first added to OpenSSL 1.1.0 Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved. Licensed under the OpenSSL license (the "License"). You may not use this file except in compliance with the License. You can obtain a copy in the file LICENSE in the source distribution or at https://www.openssl.org/source/license.html.COPYRIGHT