NAME

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

SYNOPSIS

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

           my $resolver = new Net::DNS::Resolver::Recurse();
           $resolver->debug(1);

           $resolver->hints('198.41.0.4');     # A.ROOT-SERVER.NET.

           my $packet = $resolver->send( 'www.rob.com.au.', '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 of nameservers to be used to discover the
       addresses of the root nameservers.

           $resolver->hints(@ip);

       If no hints are passed, the priming query is directed to nameservers drawn from a built-in
       list of IP addresses.

   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 query packets 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;

               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, whose contribution is
       gratefully acknowledged.

COPYRIGHT

       Copyright (c)2014,2019 Dick Franks.

       Portions Copyright (c)2002 Rob Brown.

       All rights reserved.

LICENSE

       Permission to use, copy, modify, and distribute this software and its documentation for
       any purpose and without fee is hereby granted, provided that the original copyright
       notices appear in all copies and that both copyright notice and this permission notice
       appear in supporting documentation, and that the name of the author not be used in
       advertising or publicity pertaining to distribution of the software without specific prior
       written permission.

       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
       INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
       PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
       FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
       OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
       DEALINGS IN THE SOFTWARE.

SEE ALSO

       Net::DNS::Resolver