SSL_SESSION_REUSED(3ossl)

📦
version 3.5.9 · 8 versions
, in fedora 43, fedora 44

💅 SSL_SESSION_REUSED(3ossl) 💅

okay bestie, so this is a page from the OpenSSL manual — the 3ossl collection, if we're being precise — and it's about one tiny little function that answers one very big question: did we just reuse a session, or did we start fresh? 🦋

✨ NAME ✨

SSL_session_reused — the vibe-check function that tells you whether a reused session was negotiated during the handshake 👑

🌸 SYNOPSIS 🌸

#include <openssl/ssl.h>

int SSL_session_reused(const SSL *ssl);

like, that's it. one include, one function call. iconic behavior honestly. 💖

🎀 DESCRIPTION 🎀

So you call this and it queries whether a reused session was negotiated during the handshake. That's the whole job. No drama, no side quests, just a yes-or-no on the session-reuse situation. ✨

💫 NOTES 💫

Okay so here's the lore, bestie. 🧚 During the negotiation, the client can propose to reuse a session. Then the server goes and looks that session up in its cache. And if both client and server agree on the session? It gets reused — and a flag gets set, which is literally the flag your application can query with this function. no cap. 🔥

💀 RETURN VALUES 💀

Two possible outcomes, and they are giving very binary:

  • 0 — A new session was negotiated. fresh start era. 🌱
  • 1 — A session was reused. we've been here before, bestie. 🔁

🌈 SEE ALSO 🌈

Go read these next, they're all connected, iykyk:

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>.

fr fr, read the license before you go wild with it. it's giving legal but make it cute. 🫶

and that's the whole page, bestie!! 💅✨ this was OpenSSL 3.5.9, dated 2026-09-29 — catch you on the next manpage, mwah 🎀🌸💖

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