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<?xml version="1.0" ?> <!DOCTYPE html PUBLIC "-//W3C//DTD XHTML 1.0 Strict//EN" "http://www.w3.org/TR/xhtml1/DTD/xhtml1-strict.dtd"> <html xmlns="http://www.w3.org/1999/xhtml"> <head> <title>SSL_SESSION_get_protocol_version</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <link rev="made" href="mailto:root@hsxx.drive.ne.jp" /> </head> <body style="background-color: white"> <!-- INDEX BEGIN --> <div name="index"> <p><a name="__index__"></a></p> <ul> <li><a href="#name">NAME</a></li> <li><a href="#synopsis">SYNOPSIS</a></li> <li><a href="#description">DESCRIPTION</a></li> <li><a href="#return_values">RETURN VALUES</a></li> <li><a href="#see_also">SEE ALSO</a></li> <li><a href="#history">HISTORY</a></li> <li><a href="#copyright">COPYRIGHT</a></li> </ul> <hr name="index" /> </div> <!-- INDEX END --> <p> </p> <hr /> <h1><a name="name">NAME</a></h1> <p>SSL_SESSION_get_protocol_version, SSL_SESSION_set_protocol_version - get and set the session protocol version</p> <p> </p> <hr /> <h1><a name="synopsis">SYNOPSIS</a></h1> <pre> #include <openssl/ssl.h></pre> <pre> int SSL_SESSION_get_protocol_version(const SSL_SESSION *s); int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version);</pre> <p> </p> <hr /> <h1><a name="description">DESCRIPTION</a></h1> <p><code>SSL_SESSION_get_protocol_version()</code> returns the protocol version number used by session <strong>s</strong>.</p> <p><code>SSL_SESSION_set_protocol_version()</code> sets the protocol version associated with the SSL_SESSION object <strong>s</strong> to the value <strong>version</strong>. This value should be a version constant such as <strong>TLS1_3_VERSION</strong> etc. For example, this could be used to set up a session based PSK (see <em>SSL_CTX_set_psk_use_session_callback(3)</em>).</p> <p> </p> <hr /> <h1><a name="return_values">RETURN VALUES</a></h1> <p><code>SSL_SESSION_get_protocol_version()</code> returns a number indicating the protocol version used for the session; this number matches the constants <em>e.g.</em> <strong>TLS1_VERSION</strong>, <strong>TLS1_2_VERSION</strong> or <strong>TLS1_3_VERSION</strong>.</p> <p>Note that the <code>SSL_SESSION_get_protocol_version()</code> function does <strong>not</strong> perform a null check on the provided session <strong>s</strong> pointer.</p> <p><code>SSL_SESSION_set_protocol_version()</code> returns 1 on success or 0 on failure.</p> <p> </p> <hr /> <h1><a name="see_also">SEE ALSO</a></h1> <p><em>ssl(7)</em>, <em>SSL_CTX_set_psk_use_session_callback(3)</em></p> <p> </p> <hr /> <h1><a name="history">HISTORY</a></h1> <p>The <code>SSL_SESSION_get_protocol_version()</code> function was added in OpenSSL 1.1.0. The <code>SSL_SESSION_set_protocol_version()</code> function was added in OpenSSL 1.1.1.</p> <p> </p> <hr /> <h1><a name="copyright">COPYRIGHT</a></h1> <p>Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.</p> <p>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 <a href="https://www.openssl.org/source/license.html">https://www.openssl.org/source/license.html</a>.</p> </body> </html>