openssl/doc/man3/SSL_CTX_set_ssl_version.pod

=pod

=head1 NAME

SSL_CTX_set_ssl_version, SSL_set_ssl_method, SSL_get_ssl_method
- choose a new TLS/SSL method

=head1 SYNOPSIS

 #include <openssl/ssl.h>

 int SSL_CTX_set_ssl_version(SSL_CTX *ctx, const SSL_METHOD *method);
 int SSL_set_ssl_method(SSL *s, const SSL_METHOD *method);
 const SSL_METHOD *SSL_get_ssl_method(SSL *ssl);

=head1 DESCRIPTION

SSL_CTX_set_ssl_version() sets a new default TLS/SSL B<method> for SSL objects
newly created from this B<ctx>. SSL objects already created with
L<SSL_new(3)> are not affected, except when
L<SSL_clear(3)> is being called.

SSL_set_ssl_method() sets a new TLS/SSL B<method> for a particular B<ssl>
object. It may be reset, when SSL_clear() is called.

SSL_get_ssl_method() returns a function pointer to the TLS/SSL method
set in B<ssl>.

=head1 NOTES

The available B<method> choices are described in
L<SSL_CTX_new(3)>.

When L<SSL_clear(3)> is called and no session is connected to
an SSL object, the method of the SSL object is reset to the method currently
set in the corresponding SSL_CTX object.

=head1 RETURN VALUES

The following return values can occur for SSL_CTX_set_ssl_version()
and SSL_set_ssl_method():

=over 4

=item Z<>0

The new choice failed, check the error stack to find out the reason.

=item Z<>1

The operation succeeded.

=back

=head1 SEE ALSO

L<SSL_CTX_new(3)>, L<SSL_new(3)>,
L<SSL_clear(3)>, L<ssl(7)>,
L<SSL_set_connect_state(3)>

=head1 COPYRIGHT

Copyright 2000-2016 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