NAME
SSL_free —
free an allocated SSL
structure
SYNOPSIS
/* -lssl -lcrypto */
#include <openssl/ssl.h>
void
SSL_free(SSL
*ssl);
DESCRIPTION
SSL_free()
decrements the reference count of ssl, and removes the
SSL structure pointed to by ssl
and frees up the allocated memory if the reference count has reached 0. If
ssl is a NULL pointer, no
action occurs.
SSL_free()
also calls the free(3)ing procedures for indirectly affected items, if applicable:
the buffering BIO, the read and write
BIOs, cipher lists specially created for this
ssl, the
SSL_SESSION.
Do not explicitly free these indirectly freed up items before or after
calling SSL_free(), as trying to free things twice
may lead to program failure.
The ssl session has
reference counts from two users: the SSL object, for
which the reference count is removed by
SSL_free()
and the internal session cache. If the session is considered bad, because
SSL_shutdown(3) was not called for the connection and
SSL_set_shutdown(3) was not used to set the
SSL_SENT_SHUTDOWN state, the session will also be
removed from the session cache as required by RFC 2246.
SEE ALSO
ssl(3), SSL_clear(3), SSL_new(3), SSL_set_shutdown(3), SSL_shutdown(3)
HISTORY
SSL_free() appeared in SSLeay 0.4 or
earlier and has been available since OpenBSD
2.4.