Net::DNS::Question(3pm)

1Net::DNS::Question(3) User Contributed Perl DocumentationNet::DNS::Question(3)
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NAME

6       Net::DNS::Question - DNS question record
7

SYNOPSIS

9           use Net::DNS::Question;
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11           $question = new Net::DNS::Question('example.com', 'AAAA', 'IN');
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DESCRIPTION

14       A Net::DNS::Question object represents a record in the question section
15       of a DNS packet.
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METHODS

18   new
19           $question = new Net::DNS::Question('example.com', 'AAAA', 'IN');
20           $question = new Net::DNS::Question('example.com', 'A', 'IN');
21           $question = new Net::DNS::Question('example.com');
22
23           $question = new Net::DNS::Question('2001::DB8::dead:beef', 'PTR', 'IN');
24           $question = new Net::DNS::Question('2001::DB8::dead:beef');
25
26       Creates a question object from the domain, type, and class passed as
27       arguments. One or both type and class arguments may be omitted and will
28       assume the default values shown above.
29
30       RFC4291 and RFC4632 IP address/prefix notation is supported for queries
31       in both in-addr.arpa and ip6.arpa namespaces.
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33   decode
34           $question = decode Net::DNS::Question(\$data, $offset);
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36           ($question, $offset) = decode Net::DNS::Question(\$data, $offset);
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38       Decodes the question record at the specified location within a DNS
39       wire-format packet.  The first argument is a reference to the buffer
40       containing the packet data.  The second argument is the offset of the
41       start of the question record.
42
43       Returns a Net::DNS::Question object and the offset of the next location
44       in the packet.
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46       An exception is raised if the object cannot be created (e.g., corrupt
47       or insufficient data).
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49   encode
50           $data = $question->encode( $offset, $hash );
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52       Returns the Net::DNS::Question in binary format suitable for inclusion
53       in a DNS packet buffer.
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55       The optional arguments are the offset within the packet data where the
56       Net::DNS::Question is to be stored and a reference to a hash table used
57       to index compressed names within the packet.
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59   print
60           $object->print;
61
62       Prints the record to the standard output.  Calls the string() method to
63       get the string representation.
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65   string
66           print "string = ", $question->string, "\n";
67
68       Returns a string representation of the question record.
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70   name
71           $name = $question->name;
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73       Internationalised domain name corresponding to the qname attribute.
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75       Decoding non-ASCII domain names is computationally expensive and
76       undesirable for names which are likely to be used to construct further
77       queries.
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79       When required to communicate with humans, the 'proper' domain name
80       should be extracted from a query or reply packet.
81
82           $query = new Net::DNS::Packet( $example, 'ANY' );
83           $reply = $resolver->send($query) or die;
84           ($question) = $reply->question;
85           $name = $question->name;
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87   qname, zname
88           $qname = $question->qname;
89           $zname = $question->zname;
90
91       Fully qualified domain name in the form required for a query
92       transmitted to a nameserver.  In dynamic update packets, this attribute
93       is known as zname() and refers to the zone name.
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95   qtype, ztype, type
96           $qtype = $question->type;
97           $qtype = $question->qtype;
98           $ztype = $question->ztype;
99
100       Returns the question type attribute.  In dynamic update packets, this
101       attribute is known as ztype() and refers to the zone type.
102
103   qclass, zclass, class
104           $qclass = $question->class;
105           $qclass = $question->qclass;
106           $zclass = $question->zclass;
107
108       Returns the question class attribute.  In dynamic update packets, this
109       attribute is known as zclass() and refers to the zone class.
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COPYRIGHT

112       Copyright (c)1997-2000 Michael Fuhr.
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114       Portions Copyright (c)2002,2003 Chris Reinhardt.
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116       Portions Copyright (c)2003,2006-2011 Dick Franks.
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118       All rights reserved.
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LICENSE

121       Permission to use, copy, modify, and distribute this software and its
122       documentation for any purpose and without fee is hereby granted,
123       provided that the above copyright notice appear in all copies and that
124       both that copyright notice and this permission notice appear in
125       supporting documentation, and that the name of the author not be used
126       in advertising or publicity pertaining to distribution of the software
127       without specific prior written permission.
128
129       THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
130       OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
131       MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
132       IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
133       CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
134       TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
135       SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
136

NAME

SYNOPSIS

DESCRIPTION

METHODS

COPYRIGHT

LICENSE

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