(C#) DNS Query SOA Records

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

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

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Chilkat.Dns dns = new Chilkat.Dns();

Chilkat.JsonObject json = new Chilkat.JsonObject();
json.EmitCompact = false;

bool success = dns.Query("SOA","x.com",json);
if (success == false) {
    Debug.WriteLine(dns.LastErrorText);
    return;
}

Debug.WriteLine(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

string name;
int ttl;
string mname;
string rname;
int serial;
int refresh;
int retry;
int expire;
int minttl;

int i = 0;
int 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;
}