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52 lines
1.5 KiB
52 lines
1.5 KiB
4 years ago
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=pod
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=head1 NAME
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SSL_CTX_sess_set_cache_size, SSL_CTX_sess_get_cache_size - manipulate session cache size
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=head1 SYNOPSIS
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#include <openssl/ssl.h>
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long SSL_CTX_sess_set_cache_size(SSL_CTX *ctx, long t);
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long SSL_CTX_sess_get_cache_size(SSL_CTX *ctx);
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=head1 DESCRIPTION
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SSL_CTX_sess_set_cache_size() sets the size of the internal session cache
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of context B<ctx> to B<t>.
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SSL_CTX_sess_get_cache_size() returns the currently valid session cache size.
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=head1 NOTES
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The internal session cache size is SSL_SESSION_CACHE_MAX_SIZE_DEFAULT,
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currently 1024*20, so that up to 20000 sessions can be held. This size
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can be modified using the SSL_CTX_sess_set_cache_size() call. A special
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case is the size 0, which is used for unlimited size.
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When the maximum number of sessions is reached, no more new sessions are
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added to the cache. New space may be added by calling
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L<SSL_CTX_flush_sessions(3)|SSL_CTX_flush_sessions(3)> to remove
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expired sessions.
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If the size of the session cache is reduced and more sessions are already
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in the session cache, old session will be removed at the next time a
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session shall be added. This removal is not synchronized with the
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expiration of sessions.
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=head1 RETURN VALUES
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SSL_CTX_sess_set_cache_size() returns the previously valid size.
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SSL_CTX_sess_get_cache_size() returns the currently valid size.
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=head1 SEE ALSO
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L<ssl(3)|ssl(3)>,
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L<SSL_CTX_set_session_cache_mode(3)|SSL_CTX_set_session_cache_mode(3)>,
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L<SSL_CTX_sess_number(3)|SSL_CTX_sess_number(3)>,
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L<SSL_CTX_flush_sessions(3)|SSL_CTX_flush_sessions(3)>
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=cut
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