Array
(
    [0] => tcp
    [1] => udp
    [2] => unix
    [3] => udg
    [4] => ssl
    [5] => sslv3
    [6] => tls
    [7] => tlsv1.0
    [8] => tlsv1.1
    [9] => tlsv1.2
    [10] => tlsv1.3
)