(Node.js) 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.

Install Chilkat for Node.js and Electron using npm at Chilkat npm packages for Node.js Chilkat npm packages for Electron on Windows, Linux, MacOSX, and ARM

var os = require('os');
if (os.platform() == 'win32') {  
    if (os.arch() == 'ia32') {
        var chilkat = require('@chilkat/ck-node21-win-ia32');
    } else {
        var chilkat = require('@chilkat/ck-node21-win64'); 
    }
} else if (os.platform() == 'linux') {
    if (os.arch() == 'arm') {
        var chilkat = require('@chilkat/ck-node21-arm');
    } else if (os.arch() == 'x86') {
        var chilkat = require('@chilkat/ck-node21-linux32');
    } else {
        var chilkat = require('@chilkat/ck-node21-linux64');
    }
} else if (os.platform() == 'darwin') {
    if (os.arch() == 'arm64') {
        var chilkat = require('@chilkat/ck-node21-mac-m1');
    } else {
        var chilkat = require('@chilkat/ck-node21-macosx');
    }
}

function chilkatExample() {

    var dns = new chilkat.Dns();

    var json = new chilkat.JsonObject();
    json.EmitCompact = false;

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

    console.log(json.Emit());

    // 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

    var name;
    var ttl;
    var mname;
    var rname;
    var serial;
    var refresh;
    var retry;
    var expire;
    var minttl;

    var i = 0;
    var count_i = json.SizeOfArray("answer.soa");
    while (i < count_i) {
        json.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;
    }


}

chilkatExample();