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.\" ========================================================================
.\"
.IX Title "SSL_SESSION_GET_PROTOCOL_VERSION 3"
.TH SSL_SESSION_GET_PROTOCOL_VERSION 3 "2021-08-24" "1.1.1l" "OpenSSL"
.\" For nroff, turn off justification. Always turn off hyphenation; it makes
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.nh
.SH "NAME"
SSL_SESSION_get_protocol_version, SSL_SESSION_set_protocol_version \&\- get and set the session protocol version
.SH "SYNOPSIS"
.IX Header "SYNOPSIS"
.Vb 1
\& #include <openssl/ssl.h>
\&
\& int SSL_SESSION_get_protocol_version(const SSL_SESSION *s);
\& int SSL_SESSION_set_protocol_version(SSL_SESSION *s, int version);
.Ve
.SH "DESCRIPTION"
.IX Header "DESCRIPTION"
\&\fISSL_SESSION_get_protocol_version()\fR returns the protocol version number used
by session \fBs\fR.
.PP
\&\fISSL_SESSION_set_protocol_version()\fR sets the protocol version associated with the
\&\s-1SSL_SESSION\s0 object \fBs\fR to the value \fBversion\fR. This value should be a version
constant such as \fB\s-1TLS1_3_VERSION\s0\fR etc. For example, this could be used to set
up a session based \s-1PSK\s0 (see \fISSL_CTX_set_psk_use_session_callback\fR\|(3)).
.SH "RETURN VALUES"
.IX Header "RETURN VALUES"
\&\fISSL_SESSION_get_protocol_version()\fR returns a number indicating the protocol
version used for the session; this number matches the constants \fIe.g.\fR
\&\fB\s-1TLS1_VERSION\s0\fR, \fB\s-1TLS1_2_VERSION\s0\fR or \fB\s-1TLS1_3_VERSION\s0\fR.
.PP
Note that the \fISSL_SESSION_get_protocol_version()\fR function
does \fBnot\fR perform a null check on the provided session \fBs\fR pointer.
.PP
\&\fISSL_SESSION_set_protocol_version()\fR returns 1 on success or 0 on failure.
.SH "SEE ALSO"
.IX Header "SEE ALSO"
\&\fIssl\fR\|(7),
\&\fISSL_CTX_set_psk_use_session_callback\fR\|(3)
.SH "HISTORY"
.IX Header "HISTORY"
The \fISSL_SESSION_get_protocol_version()\fR function was added in OpenSSL 1.1.0.
The \fISSL_SESSION_set_protocol_version()\fR function was added in OpenSSL 1.1.1.
.SH "COPYRIGHT"
.IX Header "COPYRIGHT"
Copyright 2001\-2018 The OpenSSL Project Authors. All Rights Reserved.
.PP
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>.
Copyright 2K16 - 2K18 Indonesian Hacker Rulez
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