NAME

       SSL_CTX_sess_number, SSL_CTX_sess_connect, SSL_CTX_sess_connect_good,
       SSL_CTX_sess_connect_renegotiate, SSL_CTX_sess_accept, SSL_CTX_sess_accept_good,
       SSL_CTX_sess_accept_renegotiate, SSL_CTX_sess_hits, SSL_CTX_sess_cb_hits,
       SSL_CTX_sess_misses, SSL_CTX_sess_timeouts, SSL_CTX_sess_cache_full - obtain session cache
       statistics

SYNOPSIS

        #include <openssl/ssl.h>

        long SSL_CTX_sess_number(SSL_CTX *ctx);
        long SSL_CTX_sess_connect(SSL_CTX *ctx);
        long SSL_CTX_sess_connect_good(SSL_CTX *ctx);
        long SSL_CTX_sess_connect_renegotiate(SSL_CTX *ctx);
        long SSL_CTX_sess_accept(SSL_CTX *ctx);
        long SSL_CTX_sess_accept_good(SSL_CTX *ctx);
        long SSL_CTX_sess_accept_renegotiate(SSL_CTX *ctx);
        long SSL_CTX_sess_hits(SSL_CTX *ctx);
        long SSL_CTX_sess_cb_hits(SSL_CTX *ctx);
        long SSL_CTX_sess_misses(SSL_CTX *ctx);
        long SSL_CTX_sess_timeouts(SSL_CTX *ctx);
        long SSL_CTX_sess_cache_full(SSL_CTX *ctx);

DESCRIPTION

       SSL_CTX_sess_number() returns the current number of sessions in the internal session
       cache.

       SSL_CTX_sess_connect() returns the number of started SSL/TLS handshakes in client mode.

       SSL_CTX_sess_connect_good() returns the number of successfully established SSL/TLS
       sessions in client mode.

       SSL_CTX_sess_connect_renegotiate() returns the number of started renegotiations in client
       mode.

       SSL_CTX_sess_accept() returns the number of started SSL/TLS handshakes in server mode.

       SSL_CTX_sess_accept_good() returns the number of successfully established SSL/TLS sessions
       in server mode.

       SSL_CTX_sess_accept_renegotiate() returns the number of started renegotiations in server
       mode.

       SSL_CTX_sess_hits() returns the number of successfully reused sessions.  In client mode a
       session set with SSL_set_session(3) successfully reused is counted as a hit. In server
       mode a session successfully retrieved from internal or external cache is counted as a hit.

       SSL_CTX_sess_cb_hits() returns the number of successfully retrieved sessions from the
       external session cache in server mode.

       SSL_CTX_sess_misses() returns the number of sessions proposed by clients that were not
       found in the internal session cache in server mode.

       SSL_CTX_sess_timeouts() returns the number of sessions proposed by clients and either
       found in the internal or external session cache in server mode,
        but that were invalid due to timeout. These sessions are not included in the
       SSL_CTX_sess_hits() count.

       SSL_CTX_sess_cache_full() returns the number of sessions that were removed because the
       maximum session cache size was exceeded.

RETURN VALUES

       The functions return the values indicated in the DESCRIPTION section.

SEE ALSO

       ssl(7), SSL_set_session(3), SSL_CTX_set_session_cache_mode(3)
       SSL_CTX_sess_set_cache_size(3)

COPYRIGHT

       Copyright 2001-2016 The OpenSSL Project Authors. All Rights Reserved.

       Licensed under the Apache License 2.0 (the "License").  You may not use this file except
       in compliance with the License.  You can obtain a copy in the file LICENSE in the source
       distribution or at <https://www.openssl.org/source/license.html>.