Net::DNS::Resolver::Recurse(3pmUser Contributed Perl DocumentatioNet::DNS::Resolver::Recurse(3pm)



NAME
       Net::DNS::Resolver::Recurse - DNS recursive resolver

SYNOPSIS
           use Net::DNS::Resolver::Recurse;

           $resolver = new Net::DNS::Resolver::Recurse();

           $packet = $resolver->query ( 'www.example.com', 'A' );
           $packet = $resolver->search( 'www.example.com', 'A' );
           $packet = $resolver->send  ( 'www.example.com', 'A' );

DESCRIPTION
       This module is a subclass of Net::DNS::Resolver.

METHODS
       This module inherits almost all the methods from Net::DNS::Resolver.  Additional module-
       specific methods are described below.

   hints
       This method specifies a list of the IP addresses used to locate the authoritative name
       servers for the root (.) zone.

           $resolver->hints(@ip);

       If no hints are passed, the default nameserver is used to discover the addresses of the
       root nameservers.

       If the default nameserver not been configured correctly, or at all, a built-in list of IP
       addresses is used.

   query, search, send
       The query(), search() and send() methods produce the same result as their counterparts in
       Net::DNS::Resolver.

           $packet = $resolver->send( 'www.example.com.', 'A' );

       Server-side recursion is suppressed by clearing the recurse flag in the packet and
       recursive name resolution is performed explicitly.

       The query() and search() methods are inherited from Net::DNS::Resolver and invoke send()
       indirectly.

   callback
       This method specifies a code reference to a subroutine, which is then invoked at each
       stage of the recursive lookup.

       For example to emulate dig's "+trace" function:

           my $coderef = sub {
               my $packet = shift;

               $_->print for $packet->additional;

               printf ";; Received %d bytes from %s\n\n",
                       $packet->answersize, $packet->answerfrom;
           };

           $resolver->callback($coderef);

       The callback subroutine is not called for queries for missing glue records.

ACKNOWLEDGEMENT
       This package is an improved and compatible reimplementation of the
       Net::DNS::Resolver::Recurse.pm created by Rob Brown in 2002.

       The contribution of Rob Brown is gratefully acknowledged.

COPYRIGHT
       Copyright (c)2014 Dick Franks

       Portions Copyright (c)2002 Rob Brown

       All rights reserved.

       This program is free software; you may redistribute it and/or modify it under the same
       terms as Perl itself.

SEE ALSO
       Net::DNS::Resolver



perl v5.20.2                                2014-10-29           Net::DNS::Resolver::Recurse(3pm)