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.
If enabled, the internal session
cache will collect all sessions established up to the specified maximum
number (see
SSL_CTX_sess_set_cache_size(3)). As sessions will not be
reused once 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)).
SEE ALSO
ssl(3), SSL_CTX_sess_set_get_cb(3), SSL_CTX_set_session_cache_mode(3), SSL_CTX_set_timeout(3)
HISTORY
SSL_CTX_flush_sessions() first appeared in
SSLeay 0.8.0 and has been available since OpenBSD
2.4.