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SSL_get_shutdown.html
<?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_set_shutdown</title> <meta http-equiv="content-type" content="text/html; charset=utf-8" /> <link rev="made" href="mailto:root@localhost" /> </head> <body> <ul id="index"> <li><a href="#NAME">NAME</a></li> <li><a href="#SYNOPSIS">SYNOPSIS</a></li> <li><a href="#DESCRIPTION">DESCRIPTION</a></li> <li><a href="#NOTES">NOTES</a></li> <li><a href="#RETURN-VALUES">RETURN VALUES</a></li> <li><a href="#SEE-ALSO">SEE ALSO</a></li> <li><a href="#COPYRIGHT">COPYRIGHT</a></li> </ul> <h1 id="NAME">NAME</h1> <p>SSL_set_shutdown, SSL_get_shutdown - manipulate shutdown state of an SSL connection</p> <h1 id="SYNOPSIS">SYNOPSIS</h1> <pre><code> #include <openssl/ssl.h> void SSL_set_shutdown(SSL *ssl, int mode); int SSL_get_shutdown(const SSL *ssl);</code></pre> <h1 id="DESCRIPTION">DESCRIPTION</h1> <p>SSL_set_shutdown() sets the shutdown state of <b>ssl</b> to <b>mode</b>.</p> <p>SSL_get_shutdown() returns the shutdown mode of <b>ssl</b>.</p> <h1 id="NOTES">NOTES</h1> <p>The shutdown state of an ssl connection is a bit mask of:</p> <dl> <dt id="pod0">0</dt> <dd> <p>No shutdown setting, yet.</p> </dd> <dt id="SSL_SENT_SHUTDOWN">SSL_SENT_SHUTDOWN</dt> <dd> <p>A close_notify shutdown alert was sent to the peer, the connection is being considered closed and the session is closed and correct.</p> </dd> <dt id="SSL_RECEIVED_SHUTDOWN">SSL_RECEIVED_SHUTDOWN</dt> <dd> <p>A shutdown alert was received form the peer, either a normal close_notify or a fatal error.</p> </dd> </dl> <p>SSL_SENT_SHUTDOWN and SSL_RECEIVED_SHUTDOWN can be set at the same time.</p> <p>The shutdown state of the connection is used to determine the state of the ssl session. If the session is still open, when <a href="../man3/SSL_clear.html">SSL_clear(3)</a> or <a href="../man3/SSL_free.html">SSL_free(3)</a> is called, it is considered bad and removed according to RFC2246. The actual condition for a correctly closed session is SSL_SENT_SHUTDOWN (according to the TLS RFC, it is acceptable to only send the close_notify alert but to not wait for the peer's answer, when the underlying connection is closed). SSL_set_shutdown() can be used to set this state without sending a close alert to the peer (see <a href="../man3/SSL_shutdown.html">SSL_shutdown(3)</a>).</p> <p>If a close_notify was received, SSL_RECEIVED_SHUTDOWN will be set, for setting SSL_SENT_SHUTDOWN the application must however still call <a href="../man3/SSL_shutdown.html">SSL_shutdown(3)</a> or SSL_set_shutdown() itself.</p> <h1 id="RETURN-VALUES">RETURN VALUES</h1> <p>SSL_set_shutdown() does not return diagnostic information.</p> <p>SSL_get_shutdown() returns the current setting.</p> <h1 id="SEE-ALSO">SEE ALSO</h1> <p><a href="../man7/ssl.html">ssl(7)</a>, <a href="../man3/SSL_shutdown.html">SSL_shutdown(3)</a>, <a href="../man3/SSL_CTX_set_quiet_shutdown.html">SSL_CTX_set_quiet_shutdown(3)</a>, <a href="../man3/SSL_clear.html">SSL_clear(3)</a>, <a href="../man3/SSL_free.html">SSL_free(3)</a></p> <h1 id="COPYRIGHT">COPYRIGHT</h1> <p>Copyright 2001-2020 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>
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