Perl Requires Chilkat v9.5.0.96+

DNS Query CAA Records

See more DNS Examples

Shows how to perform a DNS query to retrieve CAA records. Chilkat2 Perl

use strict;
use warnings;
use Chilkat2;

my $dns = Chilkat2::Dns->new;

my $json = Chilkat2::JsonObject->new;
$json->EmitCompact(0);

my $success = $dns->Query('CAA', 'zoom.us', $json);
if (!$success) {
    print $dns->LastErrorText, "\n";
    exit;
}

print $json->Emit(), "\n";

# Sample response.
# Parsing code below..

# {
#   "answer": {
#     "caa": [
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "iodef",
#         "value": "mailto:security@zoom.us"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "amazon.com"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "digicert.com"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "godaddy.com"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "letsencrypt.org"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "pki.goog"
#       },
#       {
#         "name": "zoom.us",
#         "ttl": 300,
#         "flags": 0,
#         "tag": "issue",
#         "value": "sectigo.com"
#       }
#     ]
#   }
# }

# Use this online tool to generate parsing code from sample JSON:
# Generate Parsing Code from JSON

my $name = '';
my $ttl = 0;
my $flags = 0;
my $tag = '';
my $value = '';

my $i = 0;
my $count_i = $json->SizeOfArray('answer.caa');
while ($i < $count_i) {
    $json->I($i);
    $name = $json->StringOf('answer.caa[i].name');
    $ttl = $json->IntOf('answer.caa[i].ttl');
    $flags = $json->IntOf('answer.caa[i].flags');
    $tag = $json->StringOf('answer.caa[i].tag');
    $value = $json->StringOf('answer.caa[i].value');
    $i = $i + 1;
}