my $sslSocket = IO::Socket::SSL->new(
    Listen             => 5,
    LocalPort          => XXXX,
    Proto              => 'tcp',
    SSL_server         => 1,
    SSL_startHandshake => 1,
    SSL_cert_file      => 'CRT',
    SSL_key_file       => 'KEY',
    ReuseAddr          => 1,
    Blocking           => 0
  );