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SSL_get_state.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_in_init</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="#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_in_before, SSL_in_init, SSL_is_init_finished, SSL_in_connect_init, SSL_in_accept_init, SSL_get_state - retrieve information about the handshake state machine</p> <h1 id="SYNOPSIS">SYNOPSIS</h1> <pre><code> #include <openssl/ssl.h> int SSL_in_init(const SSL *s); int SSL_in_before(const SSL *s); int SSL_is_init_finished(const SSL *s); int SSL_in_connect_init(SSL *s); int SSL_in_accept_init(SSL *s); OSSL_HANDSHAKE_STATE SSL_get_state(const SSL *ssl);</code></pre> <h1 id="DESCRIPTION">DESCRIPTION</h1> <p>SSL_in_init() returns 1 if the SSL/TLS state machine is currently processing or awaiting handshake messages, or 0 otherwise.</p> <p>SSL_in_before() returns 1 if no SSL/TLS handshake has yet been initiated, or 0 otherwise.</p> <p>SSL_is_init_finished() returns 1 if the SSL/TLS connection is in a state where fully protected application data can be transferred or 0 otherwise.</p> <p>Note that in some circumstances (such as when early data is being transferred) SSL_in_init(), SSL_in_before() and SSL_is_init_finished() can all return 0.</p> <p>SSL_in_connect_init() returns 1 if <b>s</b> is acting as a client and SSL_in_init() would return 1, or 0 otherwise.</p> <p>SSL_in_accept_init() returns 1 if <b>s</b> is acting as a server and SSL_in_init() would return 1, or 0 otherwise.</p> <p>SSL_in_connect_init() and SSL_in_accept_init() are implemented as macros.</p> <p>SSL_get_state() returns a value indicating the current state of the handshake state machine. OSSL_HANDSHAKE_STATE is an enumerated type where each value indicates a discrete state machine state. Note that future versions of OpenSSL may define more states so applications should expect to receive unrecognised state values. The naming format is made up of a number of elements as follows:</p> <p><b>protocol</b>_ST_<b>role</b>_<b>message</b></p> <p><b>protocol</b> is one of TLS or DTLS. DTLS is used where a state is specific to the DTLS protocol. Otherwise TLS is used.</p> <p><b>role</b> is one of CR, CW, SR or SW to indicate "client reading", "client writing", "server reading" or "server writing" respectively.</p> <p><b>message</b> is the name of a handshake message that is being or has been sent, or is being or has been processed.</p> <p>Additionally there are some special states that do not conform to the above format. These are:</p> <dl> <dt id="TLS_ST_BEFORE">TLS_ST_BEFORE</dt> <dd> <p>No handshake messages have yet been been sent or received.</p> </dd> <dt id="TLS_ST_OK">TLS_ST_OK</dt> <dd> <p>Handshake message sending/processing has completed.</p> </dd> <dt id="TLS_ST_EARLY_DATA">TLS_ST_EARLY_DATA</dt> <dd> <p>Early data is being processed</p> </dd> <dt id="TLS_ST_PENDING_EARLY_DATA_END">TLS_ST_PENDING_EARLY_DATA_END</dt> <dd> <p>Awaiting the end of early data processing</p> </dd> </dl> <h1 id="RETURN-VALUES">RETURN VALUES</h1> <p>SSL_in_init(), SSL_in_before(), SSL_is_init_finished(), SSL_in_connect_init() and SSL_in_accept_init() return values as indicated above.</p> <p>SSL_get_state() returns the current handshake state.</p> <h1 id="SEE-ALSO">SEE ALSO</h1> <p><a href="../man7/ssl.html">ssl(7)</a>, <a href="../man3/SSL_read_early_data.html">SSL_read_early_data(3)</a></p> <h1 id="COPYRIGHT">COPYRIGHT</h1> <p>Copyright 2017-2018 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>
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