#include <openssl/ssl.h>
- int SSL_CTX_set_ssl_version(SSL_CTX *ctx, SSL_METHOD *method);
- int SSL_set_ssl_method(SSL *s, SSL_METHOD *method);
- SSL_METHOD *SSL_get_ssl_method(SSL *ssl);
+ 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
=over 4
-=item 0
+=item Z<>0
The new choice failed, check the error stack to find out the reason.
-=item 1
+=item Z<>1
The operation succeeded.