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1 .\" $NetBSD: libcrypto.pl,v 1.3 2007/11/27 22:16:03 christos Exp $
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134 .\" ========================================================================
135 .\"
136 .IX Title "SSL_free 3"
137 .TH SSL_free 3 "2009-02-14" "1.1.0-dev" "OpenSSL"
138 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
139 .\" way too many mistakes in technical documents.
140 .if n .ad l
141 .nh
142 .SH "NAME"
143 SSL_free \- free an allocated SSL structure
144 .SH "LIBRARY"
145 libcrypto, -lcrypto
146 .SH "SYNOPSIS"
147 .IX Header "SYNOPSIS"
148 .Vb 1
149 \& #include <openssl/ssl.h>
150 \&
151 \& void SSL_free(SSL *ssl);
152 .Ve
153 .SH "DESCRIPTION"
154 .IX Header "DESCRIPTION"
155 \&\fISSL_free()\fR decrements the reference count of \fBssl\fR, and removes the \s-1SSL\s0
156 structure pointed to by \fBssl\fR and frees up the allocated memory if the
157 reference count has reached 0.
158 .SH "NOTES"
159 .IX Header "NOTES"
160 \&\fISSL_free()\fR also calls the \fIfree()\fRing procedures for indirectly affected items, if
161 applicable: the buffering \s-1BIO\s0, the read and write BIOs,
162 cipher lists specially created for this \fBssl\fR, the \fB\s-1SSL_SESSION\s0\fR.
163 Do not explicitly free these indirectly freed up items before or after
164 calling \fISSL_free()\fR, as trying to free things twice may lead to program
165 failure.
166 .PP
167 The ssl session has reference counts from two users: the \s-1SSL\s0 object, for
168 which the reference count is removed by \fISSL_free()\fR and the internal
169 session cache. If the session is considered bad, because
170 \&\fISSL_shutdown\fR\|(3) was not called for the connection
171 and \fISSL_set_shutdown\fR\|(3) was not used to set the
172 \&\s-1SSL_SENT_SHUTDOWN\s0 state, the session will also be removed
173 from the session cache as required by \s-1RFC2246\s0.
174 .SH "RETURN VALUES"
175 .IX Header "RETURN VALUES"
176 \&\fISSL_free()\fR does not provide diagnostic information.
177 .PP
178 \&\fISSL_new\fR\|(3), \fISSL_clear\fR\|(3),
179 \&\fISSL_shutdown\fR\|(3), \fISSL_set_shutdown\fR\|(3),
180 \&\fIssl\fR\|(3)