t verification error using <a href="../man3/SSL_get_verify_result.html">SSL_get_verify_result(3)</a> or by maintaining its own error storage managed by <b>verify_callback</b>.</p>

<p>If no <b>verify_callback</b> is specified, the default callback will be used. Its return value is identical to <b>preverify_ok</b>, so that any verification failure will lead to a termination of the TLS/SSL handshake with an alert message, if SSL_VERIFY_PEER is set.</p>

<p>After calling SSL_set_post_handshake_auth(), the clie