Updated: 2022/Sep/29

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SSL_set_session(3)                  OpenSSL                 SSL_set_session(3)



NAME
       SSL_set_session - set a TLS/SSL session to be used during TLS/SSL
       connect

LIBRARY
       libcrypto, -lcrypto

SYNOPSIS
        #include <openssl/ssl.h>

        int SSL_set_session(SSL *ssl, SSL_SESSION *session);

DESCRIPTION
       SSL_set_session() sets session to be used when the TLS/SSL connection
       is to be established. SSL_set_session() is only useful for TLS/SSL
       clients.  When the session is set, the reference count of session is
       incremented by 1. If the session is not reused, the reference count is
       decremented again during SSL_connect(). Whether the session was reused
       can be queried with the SSL_session_reused(3) call.

       If there is already a session set inside ssl (because it was set with
       SSL_set_session() before or because the same ssl was already used for a
       connection), SSL_SESSION_free() will be called for that session.  This
       is also the case when session is a NULL pointer. If that old session is
       still open, it is considered bad and will be removed from the session
       cache (if used). A session is considered open, if SSL_shutdown(3) was
       not called for the connection (or at least SSL_set_shutdown(3) was used
       to set the SSL_SENT_SHUTDOWN state).

NOTES
       SSL_SESSION objects keep internal link information about the session
       cache list, when being inserted into one SSL_CTX object's session
       cache.  One SSL_SESSION object, regardless of its reference count, must
       therefore only be used with one SSL_CTX object (and the SSL objects
       created from this SSL_CTX object).

RETURN VALUES
       The following return values can occur:

       0   The operation failed; check the error stack to find out the reason.

       1   The operation succeeded.

SEE ALSO
       ssl(7), SSL_SESSION_free(3), SSL_get_session(3), SSL_session_reused(3),
       SSL_CTX_set_session_cache_mode(3)

COPYRIGHT
       Copyright 2000-2022 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>.



3.0.12                            2023-05-07                SSL_set_session(3)