[ -n "$TLSMAX12"]||echo"WARNING ! your curl version or TLS library does not support tls-max option. TLS 1.2 tests may use TLS 1.3+ protocols"
[ -z "$TLSMAX12" -a -n "$TLS13"]&&echo"WARNING ! your curl version or TLS library does not support tls-max option. TLS 1.2 tests may use TLS 1.3+ protocols"