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131 .IX Title "SSL_CTX_flush_sessions 3"
132 .TH SSL_CTX_flush_sessions 3 "2017-01-26" "1.0.2k" "OpenSSL"
133 .\" For nroff, turn off justification. Always turn off hyphenation; it makes
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138 SSL_CTX_flush_sessions, SSL_flush_sessions \- remove expired sessions
140 .IX Header "SYNOPSIS"
142 \& #include <openssl/ssl.h>
144 \& void SSL_CTX_flush_sessions(SSL_CTX *ctx, long tm);
145 \& void SSL_flush_sessions(SSL_CTX *ctx, long tm);
148 .IX Header "DESCRIPTION"
149 \&\fISSL_CTX_flush_sessions()\fR causes a run through the session cache of
150 \&\fBctx\fR to remove sessions expired at time \fBtm\fR.
152 \&\fISSL_flush_sessions()\fR is a synonym for \fISSL_CTX_flush_sessions()\fR.
155 If enabled, the internal session cache will collect all sessions established
156 up to the specified maximum number (see \fISSL_CTX_sess_set_cache_size()\fR).
157 As sessions will not be reused ones they are expired, they should be
158 removed from the cache to save resources. This can either be done
159 automatically whenever 255 new sessions were established (see
160 \&\fISSL_CTX_set_session_cache_mode\fR\|(3))
161 or manually by calling \fISSL_CTX_flush_sessions()\fR.
163 The parameter \fBtm\fR specifies the time which should be used for the
164 expiration test, in most cases the actual time given by \fItime\fR\|(0)
167 \&\fISSL_CTX_flush_sessions()\fR will only check sessions stored in the internal
168 cache. When a session is found and removed, the remove_session_cb is however
169 called to synchronize with the external cache (see
170 \&\fISSL_CTX_sess_set_get_cb\fR\|(3)).
172 .IX Header "RETURN VALUES"
174 .IX Header "SEE ALSO"
176 \&\fISSL_CTX_set_session_cache_mode\fR\|(3),
177 \&\fISSL_CTX_set_timeout\fR\|(3),
178 \&\fISSL_CTX_sess_set_get_cb\fR\|(3)