|SSL_FREE(3)||Library Functions Manual||SSL_FREE(3)|
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
NULLpointer, 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 RFC2246.
SSL_free() does not provide diagnostic information. ssl(3), SSL_clear(3), SSL_new(3), SSL_set_shutdown(3), SSL_shutdown(3)
SSL_free() appeared in SSLeay 0.4 or earlier and has been available since OpenBSD 2.4.
|March 27, 2018||OpenBSD-current|