SSL_get_version
LSSL_USED(SSL_get_version);
const char *SSL_get_version(const SSL *s);
LSSL_ALIAS(SSL_get_version);
if ((tmp = SSL_get_version(ctx->ssl_conn)) == NULL)
prefix, SSL_get_version(c_ssl), SSL_CIPHER_get_version(ciph),
SSL_get_version(io->tls),
version_name = SSL_get_version(ssl);