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RedHat 9 (Linux i386) - man page for ssl_session_free (redhat section 3)

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SSL_SESSION_free(3)			     OpenSSL			      SSL_SESSION_free(3)

       SSL_SESSION_free - free an allocated SSL_SESSION structure

	#include <openssl/ssl.h>

	void SSL_SESSION_free(SSL_SESSION *session);

       SSL_SESSION_free() decrements the reference count of session and removes the SSL_SESSION
       structure pointed to by session and frees up the allocated memory, if the the reference
       count has reached 0.

       SSL_SESSION objects are allocated, when a TLS/SSL handshake operation is successfully com-
       pleted. Depending on the settings, see SSL_CTX_set_session_cache_mode(3), the SSL_SESSION
       objects are internally referenced by the SSL_CTX and linked into its session cache. SSL
       objects may be using the SSL_SESSION object; as a session may be reused, several SSL
       objects may be using one SSL_SESSION object at the same time. It is therefore crucial to
       keep the reference count (usage information) correct and not delete a SSL_SESSION object
       that is still used, as this may lead to program failures due to dangling pointers. These
       failures may also appear delayed, e.g.  when an SSL_SESSION object was completely freed as
       the reference count incorrectly became 0, but it is still referenced in the internal ses-
       sion cache and the cache list is processed during a SSL_CTX_flush_sessions(3) operation.

       SSL_SESSION_free() must only be called for SSL_SESSION objects, for which the reference
       count was explicitly incremented (e.g.  by calling SSL_get1_session(), see SSL_get_ses-
       sion(3)) or when the SSL_SESSION object was generated outside a TLS handshake operation,
       e.g. by using d2i_SSL_SESSION(3).  It must not be called on other SSL_SESSION objects, as
       this would cause incorrect reference counts and therefore program failures.

       SSL_SESSION_free() does not provide diagnostic information.

       ssl(3), SSL_get_session(3), SSL_CTX_set_session_cache_mode(3), SSL_CTX_flush_sessions(3),

0.9.7a					    2001-10-12			      SSL_SESSION_free(3)
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