Net::DNS::Resolver::Recurse(3pm)

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NAME

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

9           use Net::DNS::Resolver::Recurse;
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11           my $resolver = new Net::DNS::Resolver::Recurse();
12           $resolver->debug(1);
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14           $resolver->hints('198.41.0.4');     # A.ROOT-SERVER.NET.
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16           my $packet = $resolver->send( 'www.rob.com.au.', 'A' );
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DESCRIPTION

19       This module is a subclass of Net::DNS::Resolver.
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METHODS

22       This module inherits almost all the methods from Net::DNS::Resolver.
23       Additional module-specific methods are described below.
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25   hints
26       This method specifies a list of the IP addresses of nameservers to be
27       used to discover the addresses of the root nameservers.
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29           $resolver->hints(@ip);
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31       If no hints are passed, the priming query is directed to nameservers
32       drawn from a built-in list of IP addresses.
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34   query, search, send
35       The query(), search() and send() methods produce the same result as
36       their counterparts in Net::DNS::Resolver.
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38           $packet = $resolver->send( 'www.example.com.', 'A' );
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40       Server-side recursion is suppressed by clearing the recurse flag in
41       query packets and recursive name resolution is performed explicitly.
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43       The query() and search() methods are inherited from Net::DNS::Resolver
44       and invoke send() indirectly.
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46   callback
47       This method specifies a code reference to a subroutine, which is then
48       invoked at each stage of the recursive lookup.
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50       For example to emulate dig's "+trace" function:
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52           my $coderef = sub {
53               my $packet = shift;
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55               printf ";; Received %d bytes from %s\n\n",
56                       $packet->answersize, $packet->answerfrom;
57           };
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59           $resolver->callback($coderef);
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61       The callback subroutine is not called for queries for missing glue
62       records.
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ACKNOWLEDGEMENT

65       This package is an improved and compatible reimplementation of the
66       Net::DNS::Resolver::Recurse.pm created by Rob Brown in 2002, whose
67       contribution is gratefully acknowledged.
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COPYRIGHT

70       Copyright (c)2014,2019 Dick Franks.
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72       Portions Copyright (c)2002 Rob Brown.
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74       All rights reserved.
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LICENSE

77       Permission to use, copy, modify, and distribute this software and its
78       documentation for any purpose and without fee is hereby granted,
79       provided that the above copyright notice appear in all copies and that
80       both that copyright notice and this permission notice appear in
81       supporting documentation, and that the name of the author not be used
82       in advertising or publicity pertaining to distribution of the software
83       without specific prior written permission.
84
85       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
86       OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
87       MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
88       IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
89       CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
90       TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
91       SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
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