SSL_version
LSSL_USED(SSL_version);
int SSL_version(const SSL *ssl);
LSSL_ALIAS(SSL_version);
if (SSL_version(client) != tls_version) {
"want %x\n", SSL_version(client), tls_version);
if (SSL_version(server) != tls_version) {
"want %x\n", SSL_version(server), tls_version);
ver = SSL_version(scon);
int version = SSL_version(ssl);