my $base64 = encode_base64("<some data>");

##</code><code>##

$sock->send("<data>$base64\n") or die "Can't write to $socket";

##</code><code>##

$sock->send("<data>$base64<param>\n") or die "Can't write to $socket";

##</code><code>##

  encode_base64($str, $eol);

    Encode data by calling the encode_base64() function.
    The first argument is the string to encode. The second
    argument is the line-ending sequence to use. It is
    optional and defaults to "\n".