SSL_CTX_SESSIONS(3ossl)

📦
version 15.1 · 3 versions
, in freebsd 15.1

✨ SSL_CTX_SESSIONS 💅

okay so this is the 3ossl manual page, bestie — OpenSSL's own little corner of the docs — and it's honestly so much shorter than you'd expect. we're talking about <pink>peeking into the session cache</pink>. one function, one pointer, one very important warning. let's go 🎀

✨ NAME ✨

SSL_CTX_sessions — get at the internal session cache, like, directly 🔑

🌸 SYNOPSIS 🌸

#include <openssl/ssl.h>

LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);

that's it. that's the whole vibe. 🦋

💖 DESCRIPTION 💖

SSL_CTX_sessions() hands you back a pointer to the lhash databases that hold the internal session cache for ctx. literally just gives you the goods 💁‍♀️

one function call and you're in. no cap.

👑 NOTES 👑

okay this is the part where you actually pay attention, bestie, because this is the whole personality of this page and also the part that'll bite you 🙈

  • the sessions in the internal session cache live inside an LHASH(3) type database.
  • you can access this database directly — say, for searching. that's allowed, that's fine, slay 🔍
  • but — and this is the big but — in parallel, those same sessions also form a linked list, and that linked list is maintained completely separately from the LHASH(3) operations.
  • so do not modify the database directly. seriously. it's giving undefined chaos 💀
instead, touch it via the SSL_CTX_add_session(3) family of functions. that's the only safe way in. periodt.

🌈 RETURN VALUES 🌈

SSL_CTX_sessions() returns a pointer to the lhash of SSL_SESSION. that's the return. iconic, concise, no notes ⭐

🫶 SEE ALSO 🫶

iykyk 💜

Copyright 2001-2021 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>.

and that's the whole page, bestie 🍓 mwah 💋

signing off — this was SSL_CTX_SESSIONS(3ossl), version 3.5.6, dated 2026-04-07 💅✨🎀

📦 where this page comes from