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IO::Socket::SSL::PublicSuffix(3User Contributed Perl DocumentatIO::Socket::SSL::PublicSuffix(3pm)

NAME
       IO::Socket::SSL::PublicSuffix - provide access to Mozilla's list of effective TLD names

SYNOPSIS
           # use builtin default
           use IO::Socket::SSL::PublicSuffix;
           $ps = IO::Socket::SSL::PublicSuffix->default;

           # load from string
           $ps = IO::Socket::SSL::PublicSuffix->from_string("*.uk\n*");

           # load from file or file handle
           $ps = IO::Socket::SSL::PublicSuffix->from_file($filename);
           $ps = IO::Socket::SSL::PublicSuffix->from_file(\*STDIN);

           # --- string in -> string out
           # $rest -> whatever.host
           # $tld  -> co.uk
           my ($rest,$tld) = $ps->public_suffix('whatever.host.co.uk');
           my $tld = $ps->public_suffix('whatever.host.co.uk');

           # $root_domain -> host.co.uk
           my $root_domain = $ps->public_suffix('whatever.host.co.uk', 1);

           # --- array in -> array out
           # $rest -> [qw(whatever host)]
           # $tld  -> [qw(co uk)]
           my ($rest,$tld) = $ps->public_suffix([qw(whatever host co uk)]);

        ----

           # To update this file with the current list:
           perl -MIO::Socket::SSL::PublicSuffix -e 'IO::Socket::SSL::PublicSuffix::update_self_from_url()'

DESCRIPTION
       This module uses the list of effective top level domain names from the mozilla project to
       determine the public top level domain for a given hostname.

   Method
       class->default(%args)
           Returns object with builtin default.  "min_suffix" can be given in %args to specify
           the minimal suffix, default is 1.

       class->from_string(string,%args)
           Returns object with configuration from string.  See method "default" for %args.

       class->from_file( file name| file handle, %args )
           Returns object with configuration from file or file handle.  See method "default" for
           %args.

       $self->public_suffix( $host|\@host, [ $add ] )
           In array context the function returns the non-tld part and the tld part of the given
           hostname, in scalar context only the tld part.  It adds $add parts of the non-tld part
           to the tld, e.g. with "$add=1" it will return the root domain.

           If there were no explicit matches against the public suffix configuration it will fall
           back to a suffix of length 1.

           The function accepts a string or an array-ref (e.g. host split by "."). In the first
           case it will return string(s), in the latter case array-ref(s).

           International hostnames or labels can be in ASCII (IDNA form starting with "xn--") or
           unicode. In the latter case an IDNA handling library needs to be available.  URI is
           preferred, but Net::IDN:::Encode, Net::LibIDN are still supported.

       ($self|class)->can_idn
           Returns true if IDN support is available.

FILES
       http://publicsuffix.org/list/effective_tld_names.dat

SEE ALSO
       Domain::PublicSuffix, Mozilla::PublicSuffix

BUGS
        Q: Why yet another module, we already have L<Domain::PublicSuffix> and
           L<Mozilla::PublicSuffix>.
        A: Because the public suffix data change more often than these modules do,
           IO::Socket::SSL needs this list and it is more easy this way to keep it
           up-to-date.

AUTHOR
       Steffen Ullrich

perl v5.32.1                                2022-01-13         IO::Socket::SSL::PublicSuffix(3pm)

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