5 SSL_CTX_set_min_proto_version, SSL_CTX_set_max_proto_version,
6 SSL_set_min_proto_version, SSL_set_max_proto_version - Set minimum
7 and maximum supported protocol version
11 #include <openssl/ssl.h>
13 int SSL_CTX_set_min_proto_version(SSL_CTX *ctx, int version);
14 int SSL_CTX_set_max_proto_version(SSL_CTX *ctx, int version);
16 int SSL_set_min_proto_version(SSL *ssl, int version);
17 int SSL_set_max_proto_version(SSL *ssl, int version);
21 The functions set the minimum and maximum supported protocol versions
22 for the B<ctx> or B<ssl>.
23 This works in combination with the options set via
24 L<SSL_CTX_set_options(3)> that also make it possible to disable
25 specific protocol versions.
26 Use these functions instead of disabling specific protocol versions.
28 Setting the minimum or maximum version to 0, will enable protocol
29 versions down to the lowest version, or up to the highest version
30 supported by the library, respectively.
32 Currently supported versions are B<SSL3_VERSION>, B<TLS1_VERSION>,
33 B<TLS1_1_VERSION>, B<TLS1_2_VERSION>, B<TLS1_3_VERSION> for TLS and
34 B<DTLS1_VERSION>, B<DTLS1_2_VERSION> for DTLS.
38 These functions return 1 on success and 0 on failure.
42 All these functions are implemented using macros.
46 The functions were added in OpenSSL 1.1.0
50 L<SSL_CTX_set_options(3)>, L<SSL_CONF_cmd(3)>
54 Copyright 2016 The OpenSSL Project Authors. All Rights Reserved.
56 Licensed under the OpenSSL license (the "License"). You may not use
57 this file except in compliance with the License. You can obtain a copy
58 in the file LICENSE in the source distribution or at
59 L<https://www.openssl.org/source/license.html>.