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-.\"
-.\"     $OpenBSD: SSL_SESSION_free.3,v 1.3 2015/12/30 18:45:02 millert Exp $
-.\"
-.Dd $Mdocdate: December 30 2015 $
-.Dt SSL_SESSION_FREE 3
-.Os
-.Sh NAME
-.Nm SSL_SESSION_free
-.Nd free an allocated SSL_SESSION structure
-.Sh SYNOPSIS
-.In openssl/ssl.h
-.Ft void
-.Fn SSL_SESSION_free "SSL_SESSION *session"
-.Sh DESCRIPTION
-.Fn SSL_SESSION_free
-decrements the reference count of
-.Fa session
-and removes the
-.Vt SSL_SESSION
-structure pointed to by
-.Fa session
-and frees up the allocated memory, if the reference count has reached 0.
-If
-.Fa session
-is a
-.Dv NULL
-pointer, no action occurs.
-.Sh NOTES
-.Vt SSL_SESSION
-objects are allocated when a TLS/SSL handshake operation is successfully
-completed.
-Depending on the settings, see
-.Xr SSL_CTX_set_session_cache_mode 3 ,
-the
-.Vt SSL_SESSION
-objects are internally referenced by the
-.Vt SSL_CTX
-and linked into its session cache.
-.Vt SSL
-objects may be using the
-.Vt SSL_SESSION
-object; as a session may be reused, several
-.Vt SSL
-objects may be using one
-.Vt SSL_SESSION
-object at the same time.
-It is therefore crucial to keep the reference count (usage information) correct
-and not delete a
-.Vt 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
-.Vt SSL_SESSION
-object is completely freed as the reference count incorrectly becomes 0, but it
-is still referenced in the internal session cache and the cache list is
-processed during a
-.Xr SSL_CTX_flush_sessions 3
-operation.
-.Pp
-.Fn SSL_SESSION_free
-must only be called for
-.Vt SSL_SESSION
-objects, for which the reference count was explicitly incremented (e.g., by
-calling
-.Xr SSL_get1_session 3 ;
-see
-.Xr SSL_get_session 3 )
-or when the
-.Vt SSL_SESSION
-object was generated outside a TLS handshake operation, e.g., by using
-.Xr d2i_SSL_SESSION 3 .
-It must not be called on other
-.Vt SSL_SESSION
-objects, as this would cause incorrect reference counts and therefore program
-failures.
-.Sh RETURN VALUES
-.Fn SSL_SESSION_free
-does not provide diagnostic information.
-.Sh SEE ALSO
-.Xr d2i_SSL_SESSION 3 ,
-.Xr ssl 3 ,
-.Xr SSL_CTX_flush_sessions 3 ,
-.Xr SSL_CTX_set_session_cache_mode 3 ,
-.Xr SSL_get_session 3