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           $resolver = new Net::DNS::Resolver::Recurse();
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13           $packet = $resolver->query ( 'www.example.com', 'A' );
14           $packet = $resolver->search( 'www.example.com', 'A' );
15           $packet = $resolver->send  ( 'www.example.com', 'A' );
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DESCRIPTION

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

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

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

69       Copyright (c)2014 Dick Franks.
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71       Portions Copyright (c)2002 Rob Brown.
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73       All rights reserved.
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LICENSE

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