openssl/doc/ssl/SSL_CTX_free.pod
Rich Salz 62adbcee39 free NULL cleanup 10
Avoid checking for NULL before calling free functions.  This gets
ssl.*free:
    ssl_sess_cert_free ssl_free ssl_excert_free ssl_cert_free
    SSL_free SSL_SRP_CTX_free SSL_SESSION_free SSL_CTX_free
    SSL_CTX_SRP_CTX_free SSL_CONF_CTX_free

Reviewed-by: Kurt Roeckx <kurt@openssl.org>
2015-04-11 10:22:36 -04:00

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=pod
=head1 NAME
SSL_CTX_free - free an allocated SSL_CTX object
=head1 SYNOPSIS
#include <openssl/ssl.h>
void SSL_CTX_free(SSL_CTX *ctx);
=head1 DESCRIPTION
SSL_CTX_free() decrements the reference count of B<ctx>, and removes the
SSL_CTX object pointed to by B<ctx> and frees up the allocated memory if the
the reference count has reached 0.
It also calls the free()ing procedures for indirectly affected items, if
applicable: the session cache, the list of ciphers, the list of Client CAs,
the certificates and keys.
If B<ctx> is NULL nothing is done.
=head1 WARNINGS
If a session-remove callback is set (SSL_CTX_sess_set_remove_cb()), this
callback will be called for each session being freed from B<ctx>'s
session cache. This implies, that all corresponding sessions from an
external session cache are removed as well. If this is not desired, the user
should explicitly unset the callback by calling
SSL_CTX_sess_set_remove_cb(B<ctx>, NULL) prior to calling SSL_CTX_free().
=head1 RETURN VALUES
SSL_CTX_free() does not provide diagnostic information.
=head1 SEE ALSO
L<SSL_CTX_new(3)|SSL_CTX_new(3)>, L<ssl(3)|ssl(3)>,
L<SSL_CTX_sess_set_get_cb(3)|SSL_CTX_sess_set_get_cb(3)>
=cut