DTLSv1_client_method
LSSL_USED(DTLSv1_client_method);
const SSL_METHOD *DTLSv1_client_method(void); /* DTLSv1.0 */
LSSL_ALIAS(DTLSv1_client_method);
.ssl_method = DTLSv1_client_method,
.method = DTLSv1_client_method,