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.\" ========================================================================
.\"
.IX Title "SSL_FREE 3"
.TH SSL_FREE 3 "2023-09-11" "1.1.1w" "OpenSSL"
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
.\" way too many mistakes in technical documents.
.if n .ad l
.nh
.SH "NAME"
SSL_free \- free an allocated SSL structure
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& void SSL_free(SSL *ssl);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fISSL_free()\fR decrements the reference count of \fBssl\fR, and removes the \s-1SSL\s0
structure pointed to by \fBssl\fR and frees up the allocated memory if the
reference count has reached 0.
If \fBssl\fR is \s-1NULL\s0 nothing is done.
.SH "NOTES"
.IX Header "NOTES"
\&\fISSL_free()\fR also calls the \fIfree()\fRing procedures for indirectly affected items, if
applicable: the buffering \s-1BIO,\s0 the read and write BIOs,
cipher lists specially created for this \fBssl\fR, the \fB\s-1SSL_SESSION\s0\fR.
Do not explicitly free these indirectly freed up items before or after
calling \fISSL_free()\fR, as trying to free things twice may lead to program
failure.
.PP
The ssl session has reference counts from two users: the \s-1SSL\s0 object, for
which the reference count is removed by \fISSL_free()\fR and the internal
session cache. If the session is considered bad, because
\&\fISSL_shutdown\fR\|(3) was not called for the connection
and \fISSL_set_shutdown\fR\|(3) was not used to set the
\&\s-1SSL_SENT_SHUTDOWN\s0 state, the session will also be removed
from the session cache as required by \s-1RFC2246.\s0
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fISSL_free()\fR does not provide diagnostic information.
.PP
\&\fISSL_new\fR\|(3), \fISSL_clear\fR\|(3),
\&\fISSL_shutdown\fR\|(3), \fISSL_set_shutdown\fR\|(3),
\&\fIssl\fR\|(7)
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2000\-2016 The OpenSSL Project Authors. All Rights Reserved.
.PP
Licensed under the OpenSSL license (the \*(L"License\*(R").  You may not use
this file except in compliance with the License.  You can obtain a copy
in the file \s-1LICENSE\s0 in the source distribution or at
<https://www.openssl.org/source/license.html>.

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