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.\" ========================================================================
.\"
.IX Title "SSL_SESSION_SET1_ID 3SSL"
.TH SSL_SESSION_SET1_ID 3SSL 2024-04-11 3.3.0 OpenSSL
.\" For nroff, turn off justification.  Always turn off hyphenation; it makes
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.SH NAME
SSL_SESSION_get_id,
SSL_SESSION_set1_id
\&\- get and set the SSL session ID
.SH SYNOPSIS
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& const unsigned char *SSL_SESSION_get_id(const SSL_SESSION *s,
\&                                         unsigned int *len);
\& int SSL_SESSION_set1_id(SSL_SESSION *s, const unsigned char *sid,
\&                         unsigned int sid_len);
.Ve
.SH DESCRIPTION
.IX Header "DESCRIPTION"
\&\fBSSL_SESSION_get_id()\fR returns a pointer to the internal session id value for the
session \fBs\fR. The length of the id in bytes is stored in \fB*len\fR. The length may
be 0. The caller should not free the returned pointer directly.
.PP
\&\fBSSL_SESSION_set1_id()\fR sets the session ID for the \fBssl\fR SSL/TLS session
to \fBsid\fR of length \fBsid_len\fR.
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fBSSL_SESSION_get_id()\fR returns a pointer to the session id value.
\&\fBSSL_SESSION_set1_id()\fR returns 1 for success and 0 for failure, for example
if the supplied session ID length exceeds \fBSSL_MAX_SSL_SESSION_ID_LENGTH\fR.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fBssl\fR\|(7)
.SH HISTORY
.IX Header "HISTORY"
The \fBSSL_SESSION_set1_id()\fR function was added in OpenSSL 1.1.0.
.SH COPYRIGHT
.IX Header "COPYRIGHT"
Copyright 2015\-2020 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>.