SSL_CTX_flush_sessions(3)SSL_CTX_flush_sessions(3)NAME
SSL_CTX_flush_sessions, SSL_flush_sessions - Remove expired sessions
SYNOPSIS
#include <openssl/ssl.h>
void SSL_CTX_flush_sessions(
SSL_CTX *ctx, long tm ); void SSL_flush_sessions(
SSL_CTX *ctx, long tm );
DESCRIPTION
The SSL_CTX_flush_sessions() function causes a run through the session
cache of ctx to remove sessions expired at time (tm).
The SSL_flush_sessions() function is a synonym for the
SSL_CTX_flush_sessions() function.
NOTES
If enabled, the internal session cache will collect all sessions estab‐
lished up to the specified maximum number. (See
SSL_CTX_sess_set_cache_size()). As sessions will not be reused once
they are expired, they should be removed from the cache to save
resources. This can be done automatically whenever 255 new sessions
are established (see SSL_CTX_set_session_cache_mode()) or manually by
calling the SSL_CTX_flush_sessions() function.
The parameter tm specifies the time which should be used for the expi‐
ration test. In most cases the actual time given by time(0) will be
used.
The SSL_CTX_flush_sessions() function will only check sessions stored
in the internal cache. When a session is found and removed, the
remove_session_cb is called to synchronize with the external cache.
(See SSL_CTX_sess_set_get_cb().)
SEE ALSO
Functions: ssl(3), SSL_CTX_set_session_cache_mode(3), SSL_CTX_set_time‐
out(3), SSL_CTX_sess_set_get_cb(3)SSL_CTX_flush_sessions(3)
