Net::DNS::RR::SVCB(3) User Contributed Perl Documentation
NAME
Net::DNS::RR::SVCB - DNS SVCB resource record
SYNOPSIS
use Net::DNS;
$rr = Net::DNS::RR->new('name SVCB SvcPriority TargetName SvcParams');
DESCRIPTION
DNS Service Binding (SVCB) resource record
Service binding and parameter specification via the DNS (SVCB and HTTPS
RRs)
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.
SvcPriority
$rr->SvcPriority( $svcpriority );
$svcpriority = $rr->SvcPriority;
The priority of this record relative to others in the RRset, (lower
values being preferred). A value of 0 indicates AliasMode.')
TargetName
$rr->targetname( $targetname );
$effecivetarget = $rr->targetname;
The domain name of either the alias target (for AliasMode) or the
alternative endpoint (for ServiceMode).
For AliasMode SVCB RRs, a TargetName of "." indicates that the service
is not available or does not exist.
For ServiceMode SVCB RRs, a TargetName of "." indicates that the owner
name of this record must be used as the effective TargetName.
mandatory, alpn, no-default-alpn, port, ipv4hint, ech, ipv6hint
$rr = Net::DNS::RR->new( 'svcb.example. SVCB 1 svcb.example. port=1234' );
$rr->port(1234);
$octets = $rr->port(); # 0x04 0xD2
$octets = $rr->key3();
Constructor methods for mnemonic SvcParams prescribed by RFC9460. When
invoked without arguments, the methods return the value of the
underlying key as an uninterpreted octet string. The behaviour with
undefined arguments is not specified.
keyNN
$keynn = $rr->keyNN;
$rr->keyNN( $keynn );
$rr->keyNN( undef );
Generic constructor and accessor methods for SvcParams. The key index
NN is a decimal integer in the range 0 .. 65535. The method argument
is a presentation format character string. The returned value is an
uninterpreted octet string. The method returns the undefined value if
the key is not present. The specified key will be deleted if the
argument is undefined.
COPYRIGHT
Copyright (c)2020-2025 Dick Franks.
All rights reserved.
Package template (c)2009,2012 O.M.Kolkman and R.W.Franks.
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 original copyright notices appear in all copies and
that both 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::RR RFC9460(2)
<https://iana.org/go/rfc9460#section-2>
Service Parameter Keys <https://iana.org/assignments/dns-svcb>
perl v5.34.3 2025-08-29 Net::DNS::RR::SVCB(3)
net-dns 1.530.0 - Generated Sat Aug 30 05:46:47 CDT 2025