SSL_SESSION_IS_RESUMABLE(3SSL)

📦
version 4.0.3 · 14 versions
, in ubuntu stonking

💅 SSL_SESSION_IS_RESUMABLE 💅

okay bestie, welcome to the SSL_SESSION_IS_RESUMABLE(3SSL) page — yes that's the manual name, no I'm not going to make a whole header line about it, we're just gonna vibe.

✨ NAME ✨

SSL_SESSION_is_resumable — the lil function that tells you whether an SSL_SESSION object can be used for resumption 🫶

🌸 SYNOPSIS 🌸

#include <openssl/ssl.h>

int SSL_SESSION_is_resumable(const SSL_SESSION *s);

like that's it. one line. one function. iconic behavior only 💅

🦋 DESCRIPTION 🦋

so SSL_SESSION_is_resumable() does exactly what it says on the tin, no cap: it determines whether an SSL_SESSION object can be used to resume a session or not.

  • returns 1 → bestie, you can resume, slay ✨
  • returns 0 → nope, not resumable 🙈
⚠️ also super important: attempting to resume with a non-resumable session will result in a full handshake. so like, the vibe check fails and you do the whole thing over. not the end of the world, just so you know. 💀

👑 RETURN VALUES 👑

SSL_SESSION_is_resumable() returns 1 if the session is resumable, or 0 otherwise. that's the whole menu, no in-between, no "maybe". main character energy 🎀

🔥 SEE ALSO 🔥

go read these if you're nosy (respectfully, I love nosy) 💜

🌈 HISTORY 🌈

the SSL_SESSION_is_resumable() function was added in OpenSSL 1.1.1. so it's not ancient, it's just established. iykyk ✨

Copyright 2017-2018 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>.

so yeah, that's the whole page bestie 🌸 go make some resumable sessions (or don't, the full handshake will humble you) — ngl this one was short and sweet and I'm obsessed 🧚

signed off with love from version 4.0.3, dated 2026-09-29, and it's still the SSL_SESSION_IS_RESUMABLE(3SSL) page in spirit 💅✨

📦 where this page comes from