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.\" $OpenBSD: SSL_CTX_sessions.3,v 1.3 2018/03/21 05:07:04 schwarze Exp $
.\" OpenSSL b97fdb57 Nov 11 09:33:09 2016 +0100
.\"
.\" This file was written by Lutz Jaenicke <jaenicke@openssl.org>.
.\" Copyright (c) 2001 The OpenSSL Project. All rights reserved.
.\"
.\" Redistribution and use in source and binary forms, with or without
.\" modification, are permitted provided that the following conditions
.\" are met:
.\"
.\" 1. Redistributions of source code must retain the above copyright
.\" notice, this list of conditions and the following disclaimer.
.\"
.\" 2. Redistributions in binary form must reproduce the above copyright
.\" notice, this list of conditions and the following disclaimer in
.\" the documentation and/or other materials provided with the
.\" distribution.
.\"
.\" 3. All advertising materials mentioning features or use of this
.\" software must display the following acknowledgment:
.\" "This product includes software developed by the OpenSSL Project
.\" for use in the OpenSSL Toolkit. (http://www.openssl.org/)"
.\"
.\" 4. The names "OpenSSL Toolkit" and "OpenSSL Project" must not be used to
.\" endorse or promote products derived from this software without
.\" prior written permission. For written permission, please contact
.\" openssl-core@openssl.org.
.\"
.\" 5. Products derived from this software may not be called "OpenSSL"
.\" nor may "OpenSSL" appear in their names without prior written
.\" permission of the OpenSSL Project.
.\"
.\" 6. Redistributions of any form whatsoever must retain the following
.\" acknowledgment:
.\" "This product includes software developed by the OpenSSL Project
.\" for use in the OpenSSL Toolkit (http://www.openssl.org/)"
.\"
.\" THIS SOFTWARE IS PROVIDED BY THE OpenSSL PROJECT ``AS IS'' AND ANY
.\" EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
.\" IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
.\" PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE OpenSSL PROJECT OR
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.\"
.Dd $Mdocdate: March 21 2018 $
.Dt SSL_CTX_SESSIONS 3
.Os
.Sh NAME
.Nm SSL_CTX_sessions
.Nd access internal session cache
.Sh SYNOPSIS
.In openssl/ssl.h
.Ft struct lhash_st *
.Fn SSL_CTX_sessions "SSL_CTX *ctx"
.Sh DESCRIPTION
.Fn SSL_CTX_sessions
returns a pointer to the lhash databases containing the internal session cache
for
.Fa ctx .
.Pp
The sessions in the internal session cache are kept in an
lhash-type database
(see
.Xr lh_new 3 ) .
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
lhash operations,
so that the database must not be modified directly but by using the
.Xr SSL_CTX_add_session 3
family of functions.
.Sh SEE ALSO
.Xr lh_new 3 ,
.Xr ssl 3 ,
.Xr SSL_CTX_add_session 3 ,
.Xr SSL_CTX_set_session_cache_mode 3
.Sh HISTORY
.Fn SSL_CTX_sessions
appeared before SSLeay 0.8 and has been available since
.Ox 2.4 .
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