| =pod |
| |
| =head1 NAME |
| |
| SSL_CTX_set_min_proto_version, SSL_CTX_set_max_proto_version, |
| SSL_CTX_get_min_proto_version, SSL_CTX_get_max_proto_version, |
| SSL_set_min_proto_version, SSL_set_max_proto_version, |
| SSL_get_min_proto_version, SSL_get_max_proto_version - Get and set minimum |
| and maximum supported protocol version |
| |
| =head1 SYNOPSIS |
| |
| #include <openssl/ssl.h> |
| |
| int SSL_CTX_set_min_proto_version(SSL_CTX *ctx, int version); |
| int SSL_CTX_set_max_proto_version(SSL_CTX *ctx, int version); |
| int SSL_CTX_get_min_proto_version(SSL_CTX *ctx); |
| int SSL_CTX_get_max_proto_version(SSL_CTX *ctx); |
| |
| int SSL_set_min_proto_version(SSL *ssl, int version); |
| int SSL_set_max_proto_version(SSL *ssl, int version); |
| int SSL_get_min_proto_version(SSL *ssl); |
| int SSL_get_max_proto_version(SSL *ssl); |
| |
| =head1 DESCRIPTION |
| |
| The functions get or set the minimum and maximum supported protocol versions |
| for the B<ctx> or B<ssl>. |
| This works in combination with the options set via |
| L<SSL_CTX_set_options(3)> that also make it possible to disable |
| specific protocol versions. |
| Use these functions instead of disabling specific protocol versions. |
| |
| Setting the minimum or maximum version to 0, will enable protocol |
| versions down to the lowest version, or up to the highest version |
| supported by the library, respectively. |
| |
| Getters return 0 in case B<ctx> or B<ssl> have been configured to |
| automatically use the lowest or highest version supported by the library. |
| |
| Currently supported versions are B<SSL3_VERSION>, B<TLS1_VERSION>, |
| B<TLS1_1_VERSION>, B<TLS1_2_VERSION>, B<TLS1_3_VERSION> for TLS and |
| B<DTLS1_VERSION>, B<DTLS1_2_VERSION> for DTLS. |
| |
| =head1 RETURN VALUES |
| |
| These setter functions return 1 on success and 0 on failure. The getter |
| functions return the configured version or 0 for auto-configuration of |
| lowest or highest protocol, respectively. |
| |
| =head1 NOTES |
| |
| All these functions are implemented using macros. |
| |
| =head1 SEE ALSO |
| |
| L<ssl(7)>, |
| L<SSL_CTX_set_options(3)>, L<SSL_CONF_cmd(3)> |
| |
| =head1 HISTORY |
| |
| The setter functions were added in OpenSSL 1.1.0. The getter functions |
| were added in OpenSSL 1.1.1. |
| |
| =head1 COPYRIGHT |
| |
| Copyright 2016-2019 The OpenSSL Project Authors. All Rights Reserved. |
| |
| 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 |
| L<https://www.openssl.org/source/license.html>. |
| |
| =cut |
