xref: /freebsd/secure/lib/libcrypto/man/man3/SSL_set_session.3 (revision 1349891a0eed79625faafa5ad354d65ff9ea6012)
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Title "SSL_SET_SESSION 3"
SSL_SET_SESSION 3 "2021-08-24" "1.1.1l" "OpenSSL"
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"NAME"
SSL_set_session - set a TLS/SSL session to be used during TLS/SSL connect
"SYNOPSIS"
Header "SYNOPSIS" .Vb 1 #include <openssl/ssl.h> \& int SSL_set_session(SSL *ssl, SSL_SESSION *session); .Ve
"DESCRIPTION"
Header "DESCRIPTION" \fBSSL_set_session() sets session to be used when the \s-1TLS/SSL\s0 connection is to be established. SSL_set_session() is only useful for \s-1TLS/SSL\s0 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 \fBSSL_set_session() before or because the same ssl was already used for a connection), SSL_SESSION_free() will be called for that session. 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 \s-1SSL_SENT_SHUTDOWN\s0 state).

"NOTES"
Header "NOTES" \s-1SSL_SESSION\s0 objects keep internal link information about the session cache list, when being inserted into one \s-1SSL_CTX\s0 object's session cache. One \s-1SSL_SESSION\s0 object, regardless of its reference count, must therefore only be used with one \s-1SSL_CTX\s0 object (and the \s-1SSL\s0 objects created from this \s-1SSL_CTX\s0 object).
"RETURN VALUES"
Header "RETURN VALUES" The following return values can occur:
"0" 4
The operation failed; check the error stack to find out the reason.
"1" 4
Item "1" The operation succeeded.
"SEE ALSO"
Header "SEE ALSO" \fBssl\|(7), SSL_SESSION_free\|(3), \fBSSL_get_session\|(3), \fBSSL_session_reused\|(3), \fBSSL_CTX_set_session_cache_mode\|(3)
"COPYRIGHT"
Header "COPYRIGHT" Copyright 2000-2016 The OpenSSL Project Authors. All Rights Reserved.

Licensed under the OpenSSL license (the \*(L"License\*(R"). You may not use this file except in compliance with the License. You can obtain a copy in the file \s-1LICENSE\s0 in the source distribution or at <https://www.openssl.org/source/license.html>.