Perl

DNS Query SOA Records

See more DNS Examples

Shows how to perform a DNS query to retrieve SOA records.

Note: This example requires Chilkat v9.5.0.96 or later.

Perl

use chilkat();

$success = 0;

$dns = chilkat::CkDns->new();

$json = chilkat::CkJsonObject->new();
$json->put_EmitCompact(0);

$success = $dns->Query("SOA","x.com",$json);
if ($success == 0) {
    print $dns->lastErrorText() . "\r\n";
    exit;
}

print $json->emit() . "\r\n";

# Sample response.
# Parsing code below..

# {
#   "answer": {
#     "soa": [
#       {
#         "name": "x.com",
#         "ttl": 1800,
#         "mname": "alexia.ns.cloudflare.com",
#         "rname": "dns.cloudflare.com",
#         "serial": -1971124188,
#         "refresh": 10000,
#         "retry": 2400,
#         "expire": 604800,
#         "minttl": 1800
#       }
#     ]
#   }
# }

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

$i = 0;
$count_i = $json->SizeOfArray("answer.soa");
while ($i < $count_i) {
    $json->put_I($i);
    $name = $json->stringOf("answer.soa[i].name");
    $ttl = $json->IntOf("answer.soa[i].ttl");
    $mname = $json->stringOf("answer.soa[i].mname");
    $rname = $json->stringOf("answer.soa[i].rname");
    $serial = $json->IntOf("answer.soa[i].serial");
    $refresh = $json->IntOf("answer.soa[i].refresh");
    $retry = $json->IntOf("answer.soa[i].retry");
    $expire = $json->IntOf("answer.soa[i].expire");
    $minttl = $json->IntOf("answer.soa[i].minttl");
    $i = $i + 1;
}