SSL_CTX_SESS_NUMBER(3ossl)

📦
version 15.1 · 2 versions
, in freebsd 15.1

✨ NAME ✨

okay so welcome to the SSL_CTX_SESS_NUMBER(3ossl) page, bestie 💅 this is the whole function squad, and their collective job is literally to obtain session cache statistics:

  • 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

no cap, that's the entire roster 🫶

📖 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 💖

okay so every one of these cuties hands you a different little stat. here's the tea, function by function:

  • SSL_CTX_sess_number() — returns the current number of sessions in the internal session cache. that's the main-character count, bestie 💅
  • 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. slay ✨
  • 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. iconic behavior, honestly 👑
  • 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. important little detail, don't forget it 🎀
  • SSL_CTX_sess_cache_full() — returns the number of sessions that were removed because the maximum session cache size was exceeded. cache said "no more room bestie" 💀

🌈 RETURN VALUES 🌈

the functions return the values indicated in the DESCRIPTION section. that's it — no secret bonus lore 🌸

🦋 SEE ALSO 🦋

go peek at these when you're done here:

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>.

okay that's the whole page, bestie — signed off from OpenSSL 3.5.6, dated 2026-04-07, mwah 💖

📦 where this page comes from