SSL_CTX_sess_set_cache_size - manipulate session cache size
#include <openssl/ssl.h> long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, long t); long SSL_CTX_sess_get_cache_size(SSL_CTX *ctx);
OpenSSL SSL_CTX_sess_set_cache_size(3openssl)
NAME
SSL_CTX_sess_set_cache_size, SSL_CTX_sess_get_cache_size - manipulate
session cache size
SYNOPSIS
#include <openssl/ssl.h>
long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, long t);
long SSL_CTX_sess_get_cache_size(SSL_CTX *ctx);
DESCRIPTION
SSL_CTX_sess_set_cache_size() sets the size of the internal session
cache of context ctx to t. This value is a hint and not an absolute;
see the notes below.
SSL_CTX_sess_get_cache_size() returns the currently valid session cache
size.
ATTRIBUTES
See attributes(7) for descriptions of the following attributes:
+---------------+--------------------------+
|ATTRIBUTE TYPE | ATTRIBUTE VALUE |
+---------------+--------------------------+
|Availability | library/security/openssl |
+---------------+--------------------------+
|Stability | Pass-through uncommitted |
+---------------+--------------------------+
NOTES
The internal session cache size is SSL_SESSION_CACHE_MAX_SIZE_DEFAULT,
currently 1024*20, so that up to 20000 sessions can be held. This size
can be modified using the SSL_CTX_sess_set_cache_size() call. A special
case is the size 0, which is used for unlimited size.
If adding the session makes the cache exceed its size, then unused
sessions are dropped from the end of the cache. Cache space may also
be reclaimed by calling SSL_CTX_flush_sessions(3) to remove expired
sessions.
If the size of the session cache is reduced and more sessions are
already in the session cache, old session will be removed at the next
time a session shall be added. This removal is not synchronized with
the expiration of sessions.
Source code for open source software components in Oracle Solaris can
be found at https://www.oracle.com/downloads/opensource/solaris-source-
code-downloads.html.
This software was built from source available at
https://github.com/oracle/solaris-userland. The original community
source was downloaded from
https://www.openssl.org/source/openssl-1.0.2ze.tar.gz.
Further information about this software can be found on the open source
community website at https://www.openssl.org/.
RETURN VALUES
SSL_CTX_sess_set_cache_size() returns the previously valid size.
SSL_CTX_sess_get_cache_size() returns the currently valid size.
SEE ALSO
ssl(3), SSL_CTX_set_session_cache_mode(3), SSL_CTX_sess_number(3),
SSL_CTX_flush_sessions(3)
1.0.2ze 2022-05-03
SSL_CTX_sess_set_cache_size(3openssl)