JavaScript

DNS Query NS Records

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

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

Note

This example is intended for running within a Chilkat.Js embedded JavaScript engine. All Chilkat JavaScript examples require Chilkat v11.4.0 or greater.

JavaScript

var success = false;

var dns = new CkDns();

var json = new CkJsonObject();
json.EmitCompact = false;

success = dns.Query("NS","x.com",json);
if (success == false) {
    console.log(dns.LastErrorText);
    return;
}

console.log(json.Emit());

// Sample response.
// Parsing code below..

// {
//   "answer": {
//     "ns": [
//       {
//         "name": "x.com",
//         "ttl": 86400,
//         "domain": "alexia.ns.cloudflare.com"
//       },
//       {
//         "name": "x.com",
//         "ttl": 86400,
//         "domain": "tosana.ns.cloudflare.com"
//       }
//     ]
//   }
// }

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

var name;
var ttl;
var domain;

var i = 0;
var count_i = json.SizeOfArray("answer.ns");
while (i < count_i) {
    json.I = i;
    name = json.StringOf("answer.ns[i].name");
    ttl = json.IntOf("answer.ns[i].ttl");
    domain = json.StringOf("answer.ns[i].domain");
    i = i+1;
}