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SSL_CTX_FLUSH_SESSIONS(3)           OpenSSL          SSL_CTX_FLUSH_SESSIONS(3)
NAME
       SSL_CTX_flush_sessions - remove expired sessions
SYNOPSIS
        #include <openssl/ssl.h>
        void SSL_CTX_flush_sessions(SSL_CTX *ctx, long tm);
DESCRIPTION
       SSL_CTX_flush_sessions() causes a run through the session cache of ctx
       to remove sessions expired at time tm.
NOTES
       If enabled, the internal session cache will collect all sessions
       established up to the specified maximum number (see
       SSL_CTX_sess_set_cache_size()).  As sessions will not be reused ones
       they are expired, they should be removed from the cache to save
       resources. This can either be done automatically whenever 255 new
       sessions were established (see SSL_CTX_set_session_cache_mode(3)) or
       manually by calling SSL_CTX_flush_sessions().
       The parameter tm specifies the time which should be used for the
       expiration test, in most cases the actual time given by time(0) will be
       used.
       SSL_CTX_flush_sessions() will only check sessions stored in the
       internal cache. When a session is found and removed, the
       remove_session_cb is however called to synchronize with the external
       cache (see SSL_CTX_sess_set_get_cb(3)).
RETURN VALUES
       SSL_CTX_flush_sessions() does not return a value.
SEE ALSO
       ssl(7), SSL_CTX_set_session_cache_mode(3), SSL_CTX_set_timeout(3),
       SSL_CTX_sess_set_get_cb(3)
COPYRIGHT
       Copyright 2001-2018 The OpenSSL Project Authors. All Rights Reserved.
       Licensed under the OpenSSL license (the "License").  You may not use
       this file except in compliance with the License.  You can obtain a copy
       in the file LICENSE in the source distribution or at
       <https://www.openssl.org/source/license.html>;.
1.1.1k                            2021-03-25         SSL_CTX_FLUSH_SESSIONS(3)