Net::DNS::RR::SOA(3) User Contributed Perl Documentation Net::DNS::RR::SOA(3)NAME
Net::DNS::RR::SOA - DNS SOA resource record
SYNOPSIS
use Net::DNS;
$rr = new Net::DNS::RR('name SOA mname rname 0 14400 3600 1814400 3600');
DESCRIPTION
Class for DNS Start of Authority (SOA) resource records.
METHODS
The available methods are those inherited from the base class augmented by the type-specific methods defined in this package.
Use of undocumented package features or direct access to internal data structures is discouraged and could result in program termination or
other unpredictable behaviour.
mname
$mname = $rr->mname;
$rr->mname( $mname );
The domain name of the name server that was the original or primary source of data for this zone.
rname
$rname = $rr->rname;
$rr->rname( $rname );
The mailbox which identifies the person responsible for maintaining this zone.
serial
$serial = $rr->serial;
$serial = $rr->serial(value);
Unsigned 32 bit version number of the original copy of the zone. Zone transfers preserve this value.
RFC1982 defines a strict (irreflexive) partial ordering for zone serial numbers. The serial number will be incremented unless the
replacement value argument satisfies the ordering constraint.
refresh
$refresh = $rr->refresh;
$rr->refresh( $refresh );
A 32 bit time interval before the zone should be refreshed.
retry
$retry = $rr->retry;
$rr->retry( $retry );
A 32 bit time interval that should elapse before a failed refresh should be retried.
expire
$expire = $rr->expire;
$rr->expire( $expire );
A 32 bit time value that specifies the upper limit on the time interval that can elapse before the zone is no longer authoritative.
minimum
$minimum = $rr->minimum;
$rr->minimum( $minimum );
The unsigned 32 bit minimum TTL field that should be exported with any RR from this zone.
Zone Serial Number Management
The internal logic of the serial() method offers support for several widely used zone serial numbering policies.
Strictly Sequential
$successor = $soa->serial( SEQUENTIAL );
The existing serial number is incremented modulo 2**32 because the value returned by the auxiliary SEQUENTIAL() function can never satisfy
the serial number ordering constraint.
Date Encoded
$successor = $soa->serial( YYYYMMDDxx );
The 32 bit value returned by the auxiliary YYYYMMDDxx() function will be used if it satisfies the ordering constraint, otherwise the serial
number will be incremented as above.
Serial number increments must be limited to 100 per day for the date information to remain useful.
Time Encoded
$successor = $soa->serial( UNIXTIME );
The 32 bit value returned by the auxiliary UNIXTIME() function will used if it satisfies the ordering constraint, otherwise the existing
serial number will be incremented as above.
COPYRIGHT
Copyright (c)1997-2002 Michael Fuhr.
Portions Copyright (c)2002-2004 Chris Reinhardt.
Portions Copyright (c)2010,2012 Dick Franks.
All rights reserved.
This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself.
Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.
SEE ALSO
perl, Net::DNS, Net::DNS::RR, RFC1035 Section 3.3.13, RFC1982
perl v5.18.2 2014-01-16 Net::DNS::RR::SOA(3)
Check Out this Related Man Page
Net::DNS::Question(3) User Contributed Perl Documentation Net::DNS::Question(3)NAME
Net::DNS::Question - DNS question class
SYNOPSIS
"use Net::DNS::Question"
DESCRIPTION
A "Net::DNS::Question" object represents a record in the question section of a DNS packet.
METHODS
new
$question = Net::DNS::Question->new("example.com", "MX", "IN");
Creates a question object from the domain, type, and class passed as arguments.
RFC4291 and RFC4632 IP address/prefix notation is supported for queries in in-addr.arpa and ip6.arpa subdomains.
parse
($question, $offset) = Net::DNS::Question->parse($data, $offset);
Parses a question section record at the specified location within a DNS packet. The first argument is a reference to the packet data. The
second argument is the offset within the packet where the question record begins.
Returns a Net::DNS::Question object and the offset of the next location in the packet.
Parsing is aborted if the question object cannot be created (e.g., corrupt or insufficient data).
qname, zname
print "qname = ", $question->qname, "
";
print "zname = ", $question->zname, "
";
Returns the domain name. In dynamic update packets, this field is known as "zname" and refers to the zone name.
qtype, ztype
print "qtype = ", $question->qtype, "
";
print "ztype = ", $question->ztype, "
";
Returns the record type. In dymamic update packets, this field is known as "ztype" and refers to the zone type (must be SOA).
qclass, zclass
print "qclass = ", $question->qclass, "
";
print "zclass = ", $question->zclass, "
";
Returns the record class. In dynamic update packets, this field is known as "zclass" and refers to the zone's class.
print
$question->print;
Prints the question record on the standard output.
string
print $qr->string, "
";
Returns a string representation of the question record.
data
$qdata = $question->data($packet, $offset);
Returns the question record in binary format suitable for inclusion in a DNS packet.
Arguments are a "Net::DNS::Packet" object and the offset within that packet's data where the "Net::DNS::Question" record is to be stored.
This information is necessary for using compressed domain names.
COPYRIGHT
Copyright (c) 1997-2002 Michael Fuhr.
Portions Copyright (c) 2002-2004 Chris Reinhardt.
Portions Copyright (c) 2003,2006-2009 Dick Franks.
All rights reserved.
This program is free software; you may redistribute it and/or modify it under the same terms as Perl itself.
SEE ALSO perl(1), Net::DNS, Net::DNS::Resolver, Net::DNS::Packet, Net::DNS::Update, Net::DNS::Header, Net::DNS::RR, RFC 1035 Section 4.1.2
perl v5.12.1 2009-12-30 Net::DNS::Question(3)