SSL_session_reused - query whether a reused session was negotiated during handshake

#include <openssl/ssl.h>
int SSL_session_reused(const SSL *ssl);

Query, whether a reused session was negotiated during the handshake.

During the negotiation, a client can propose to reuse a session. The server then looks up the session in its cache. If both client and server agree on the session, it will be reused and a flag is being set that can be queried by the application.

The following return values can occur:

A new session was negotiated.
A session was reused.

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

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

2024-06-04 3.3.1