1=pod
2
3=head1 NAME
4
5SSL_CTX_sess_set_cache_size, SSL_CTX_sess_get_cache_size - manipulate session cache size
6
7=head1 SYNOPSIS
8
9 #include <openssl/ssl.h>
10
11 long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, long t);
12 long SSL_CTX_sess_get_cache_size(SSL_CTX *ctx);
13
14=head1 DESCRIPTION
15
16SSL_CTX_sess_set_cache_size() sets the size of the internal session cache
17of context B<ctx> to B<t>.
18
19SSL_CTX_sess_get_cache_size() returns the currently valid session cache size.
20
21=head1 NOTES
22
23The internal session cache size is SSL_SESSION_CACHE_MAX_SIZE_DEFAULT,
24currently 1024*20, so that up to 20000 sessions can be held. This size
25can be modified using the SSL_CTX_sess_set_cache_size() call. A special
26case is the size 0, which is used for unlimited size.
27
28When the maximum number of sessions is reached, no more new sessions are
29added to the cache. New space may be added by calling
30L<SSL_CTX_flush_sessions(3)|SSL_CTX_flush_sessions(3)> to remove
31expired sessions.
32
33If the size of the session cache is reduced and more sessions are already
34in the session cache, old session will be removed at the next time a
35session shall be added. This removal is not synchronized with the
36expiration of sessions.
37
38=head1 RETURN VALUES
39
40SSL_CTX_sess_set_cache_size() returns the previously valid size.
41
42SSL_CTX_sess_get_cache_size() returns the currently valid size.
43
44=head1 SEE ALSO
45
46L<ssl(3)|ssl(3)>,
47L<SSL_CTX_set_session_cache_mode(3)|SSL_CTX_set_session_cache_mode(3)>,
48L<SSL_CTX_sess_number(3)|SSL_CTX_sess_number(3)>,
49L<SSL_CTX_flush_sessions(3)|SSL_CTX_flush_sessions(3)>
50
51=cut
52