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SSL_SESSION_get_protocol_version.3
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Always turn off hyphenation; it makes .\" way too many mistakes in technical documents. .if n .ad l .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" \&\fBSSL_SESSION_get_protocol_version()\fR returns the protocol version number used by session \fBs\fR. .PP \&\fBSSL_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 \fBSSL_CTX_set_psk_use_session_callback\fR\|(3)). .SH "RETURN VALUES" .IX Header "RETURN VALUES" \&\fBSSL_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 \fBSSL_SESSION_get_protocol_version()\fR function does \fBnot\fR perform a null check on the provided session \fBs\fR pointer. .PP \&\fBSSL_SESSION_set_protocol_version()\fR returns 1 on success or 0 on failure. .SH "SEE ALSO" .IX Header "SEE ALSO" \&\fBssl\fR\|(7), \&\fBSSL_CTX_set_psk_use_session_callback\fR\|(3) .SH "HISTORY" .IX Header "HISTORY" The \fBSSL_SESSION_get_protocol_version()\fR function was added in OpenSSL 1.1.0. The \fBSSL_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>.
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