=pod =head1 NAME SSL_SESSION_get_protocol_version - retrieve session protocol version =head1 SYNOPSIS #include int SSL_SESSION_get_protocol_version(const SSL_SESSION *s); =head1 DESCRIPTION SSL_SESSION_get_protocol_version() returns the protocol version number used by session B. =head1 RETURN VALUES SSL_SESSION_get_protocol_version() returns a number indicating the protocol version used for the session; this number matches the constants I B or B. Note that the SSL_SESSION_get_protocol_version() function does B perform a null check on the provided session B pointer. =head1 SEE ALSO L =head1 HISTORY SSL_SESSION_get_protocol_version() was first added to OpenSSL 1.1.0 =head1 COPYRIGHT 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 L. =cut