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.IX Title "SSL_CTX_SESSIONS 3ossl"
.TH SSL_CTX_SESSIONS 3ossl 2026-01-27 3.5.5 OpenSSL
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.SH NAME
SSL_CTX_sessions \- access internal session cache
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& LHASH_OF(SSL_SESSION) *SSL_CTX_sessions(SSL_CTX *ctx);
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
\&\fBSSL_CTX_sessions()\fR returns a pointer to the lhash databases containing the
internal session cache for \fBctx\fR.
.SH NOTES
.IX Header "NOTES"
The sessions in the internal session cache are kept in an
\&\fBLHASH\fR\|(3) type database. It is possible to directly
access this database e.g. for searching. In parallel, the sessions
form a linked list which is maintained separately from the
\&\fBLHASH\fR\|(3) operations, so that the database must not be
modified directly but by using the
\&\fBSSL_CTX_add_session\fR\|(3) family of functions.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBSSL_CTX_sessions()\fR returns a pointer to the lhash of \fBSSL_SESSION\fR.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBssl\fR\|(7), \fBLHASH\fR\|(3),
\&\fBSSL_CTX_add_session\fR\|(3),
\&\fBSSL_CTX_set_session_cache_mode\fR\|(3)
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright 2001\-2021 The OpenSSL Project Authors. All Rights Reserved.
.PP
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>.
