Net::DNS::Header man page on BSDOS

Man page or keyword search:  
man Server   6284 pages
apropos Keyword Search (all sections)
Output format
BSDOS logo
[printable version]



lib::Net::DNS::UsereContributed Perl Doculib::Net::DNS::Header(3)

NAME
       Net::DNS::Header - DNS packet header class

SYNOPSIS
       use Net::DNS::Header;

DESCRIPTION
       A Net::DNS::Header object represents the header portion of
       a DNS packet.

METHODS
       new

	   $header = new Net::DNS::Header;
	   $header = new Net::DNS::Header(\$data);

       Without an argument, new creates a header object
       appropriate for making a DNS query.

       If new is passed a reference to a scalar containing DNS
       packet data, it creates a header object from that data.

       Returns undef if unable to create a header object (e.g.,
       if the data is incomplete).

       print

	   $header->print;

       Dumps the header data to the standard output.

       string

	   print $header->string;

       Returns a string representation of the header object.

       id

	   print "query id = ", $header->id, "\n";
	   $header->id(1234);

       Gets or sets the query identification number.

       qr

	   print "query response flag = ", $header->qr, "\n";
	   $header->qr(0);

24/Aug/1997	       perl 5.005, patch 03			1

lib::Net::DNS::UsereContributed Perl Doculib::Net::DNS::Header(3)

       Gets or sets the query response flag.

       opcode

	   print "query opcode = ", $header->opcode, "\n";
	   $header->opcode("UPDATE");

       Gets or sets the query opcode (the purpose of the query).

       aa

	   print "answer is ", $header->aa ? "" : "non-", "authoritative\n";
	   $header->aa(0);

       Gets or sets the authoritative answer flag.

       tc

	   print "packet is ", $header->tc ? "" : "not ", "truncated\n";
	   $header->tc(0);

       Gets or sets the truncated packet flag.

       rd

	   print "recursion was ", $header->rd ? "" : "not ", "desired\n";
	   $header->rd(0);

       Gets or sets the recursion desired flag.

       ra

	   print "recursion is ", $header->ra ? "" : "not ", "available\n";
	   $header->ra(0);

       Gets or sets the recursion available flag.

       rcode

	   print "query response code = ", $header->rcode, "\n";
	   $header->rcode("SERVFAIL");

       Gets or sets the query response code (the status of the
       query).

24/Aug/1997	       perl 5.005, patch 03			2

lib::Net::DNS::UsereContributed Perl Doculib::Net::DNS::Header(3)

       qdcount, zocount

	   print "# of question records: ", $header->qdcount, "\n";
	   $header->qdcount(2);

       Gets or sets the number of records in the question section
       of the packet.  In dynamic update packets, this field is
       known as zocount and refers to the number of RRs in the
       zone section.

       ancount, prcount

	   print "# of answer records: ", $header->ancount, "\n";
	   $header->ancount(5);

       Gets or sets the number of records in the answer section
       of the packet.  In dynamic update packets, this field is
       known as prcount and refers to the number of RRs in the
       prerequisite section.

       nscount, upcount

	   print "# of authority records: ", $header->nscount, "\n";
	   $header->nscount(2);

       Gets or sets the number of records in the authority
       section of the packet.  In dynamic update packets, this
       field is known as upcount and refers to the number of RRs
       in the update section.

       arcount, adcount

	   print "# of additional records: ", $header->arcount, "\n";
	   $header->arcount(3);

       Gets or sets the number of records in the additional
       section of the packet.  In dynamic update packets, this
       field is known as adcount.

       data

	   $hdata = $header->data;

       Returns the header data in binary format, appropriate for
       use in a DNS query packet.

COPYRIGHT
       Copyright (c) 1997 Michael Fuhr.	 All rights reserved.
       This program is free software; you can redistribute it

24/Aug/1997	       perl 5.005, patch 03			3

lib::Net::DNS::UsereContributed Perl Doculib::Net::DNS::Header(3)

       and/or modify it under the same terms as Perl itself.

SEE ALSO
       the perl(1) manpage, the Net::DNS manpage, the
       Net::DNS::Resolver manpage, the Net::DNS::Packet manpage,
       the Net::DNS::Update manpage, the Net::DNS::Question
       manpage, the Net::DNS::RR manpage, RFC 1035 Section 4.1.1

24/Aug/1997	       perl 5.005, patch 03			4

[top]
                             _         _         _ 
                            | |       | |       | |     
                            | |       | |       | |     
                         __ | | __ __ | | __ __ | | __  
                         \ \| |/ / \ \| |/ / \ \| |/ /  
                          \ \ / /   \ \ / /   \ \ / /   
                           \   /     \   /     \   /    
                            \_/       \_/       \_/ 
More information is available in HTML format for server BSDOS

List of man pages available for BSDOS

Copyright (c) for man pages and the logo by the respective OS vendor.

For those who want to learn more, the polarhome community provides shell access and support.

[legal] [privacy] [GNU] [policy] [cookies] [netiquette] [sponsors] [FAQ]
Tweet
Polarhome, production since 1999.
Member of Polarhome portal.
Based on Fawad Halim's script.
....................................................................
Vote for polarhome
Free Shell Accounts :: the biggest list on the net