#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 2001-2019 The OpenSSL Project Authors. All Rights Reserved.
Licensed under the OpenSSL license (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>.
SSL_CTX_set_ct_validation_callback.3ssl(3), SSL_CTX_set_psk_client_callback.3ssl(3), SSL_CTX_set_session_cache_mode.3ssl(3), SSL_CTX_set_tlsext_ticket_key_cb.3ssl(3), SSL_CTX_use_psk_identity_hint.3ssl(3), SSL_set_session.3ssl(3).