huschi.net

Net::DNS::Question(3) User Contributed Perl DocumentationNet::DNS::Question(3)
NAME
       Net::DNS::Question - DNS question record
SYNOPSIS
           use Net::DNS::Question;
           $question = new Net::DNS::Question('example.com', 'A', 'IN');
DESCRIPTION
       A Net::DNS::Question object represents a record in the question section
       of a DNS packet.
METHODS
   new
           $question = new Net::DNS::Question('example.com', 'A', 'IN');
           $question = new Net::DNS::Question('example.com');
           $question = new Net::DNS::Question('192.0.32.10', 'PTR', 'IN');
           $question = new Net::DNS::Question('192.0.32.10');
       Creates a question object from the domain, type, and class passed as
       arguments. One or both type and class arguments may be omitted and will
       assume the default values shown above.
       RFC4291 and RFC4632 IP address/prefix notation is supported for queries
       in both in-addr.arpa and ip6.arpa namespaces.
   decode
           $question = decode Net::DNS::Question(\$data, $offset);
           ($question, $offset) = decode Net::DNS::Question(\$data, $offset);
       Decodes the question record at the specified location within a DNS
       wire-format packet.  The first argument is a reference to the buffer
       containing the packet data.  The second argument is the offset of the
       start of the question record.
       Returns a Net::DNS::Question object and the offset of the next location
       in the packet.
       An exception is raised if the object cannot be created (e.g., corrupt
       or insufficient data).
   encode
           $data = $question->encode( $offset, $hash );
       Returns the Net::DNS::Question in binary format suitable for inclusion
       in a DNS packet buffer.
       The optional arguments are the offset within the packet data where the
       Net::DNS::Question is to be stored and a reference to a hash table used
       to index compressed names within the packet.
   print
           $object->print;
       Prints the record to the standard output.  Calls the string() method to
       get the string representation.
   string
           print "string = ", $question->string, "\n";
       Returns a string representation of the question record.
   name
           $name = $question->name;
       Internationalised domain name corresponding to the qname attribute.
       Decoding non-ASCII domain names is computationally expensive and
       undesirable for names which are likely to be used to construct further
       queries.
       When required to communicate with humans, the 'proper' domain name
       should be extracted from a query or reply packet.
           $query = new Net::DNS::Packet( $example, 'ANY' );
           $reply = $resolver->send($query) or die;
           ($question) = $reply->question;
           $name = $question->name;
   qname, zname
           $qname = $question->qname;
           $zname = $question->zname;
       Canonical ASCII domain name as required for the query subject
       transmitted to a nameserver.  In dynamic update packets, this attribute
       is known as zname() and refers to the zone name.
   qtype, ztype, type
           $qtype = $question->type;
           $qtype = $question->qtype;
           $ztype = $question->ztype;
       Returns the question type attribute.  In dynamic update packets, this
       attribute is known as ztype() and refers to the zone type.
   qclass, zclass, class
           $qclass = $question->class;
           $qclass = $question->qclass;
           $zclass = $question->zclass;
       Returns the question class attribute.  In dynamic update packets, this
       attribute is known as zclass() and refers to the zone class.
COPYRIGHT
       Copyright (c)1997-2000 Michael Fuhr.
       Portions Copyright (c)2002,2003 Chris Reinhardt.
       Portions Copyright (c)2003,2006-2011 Dick Franks.
       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 above copyright notice appear in all copies and that
       both that 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
       perl, Net::DNS, Net::DNS::DomainName, Net::DNS::Packet, RFC 1035
       Section 4.1.2
perl v5.26.3                      2018-02-09             Net::DNS::Question(3)