Unicode C

DNS Query NS Records

See more DNS Examples

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

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

Unicode C

#include <C_CkDnsW.h>
#include <C_CkJsonObjectW.h>

void ChilkatSample(void)
    {
    BOOL success;
    HCkDnsW dns;
    HCkJsonObjectW json;
    const wchar_t *name;
    int ttl;
    const wchar_t *domain;
    int i;
    int count_i;

    success = FALSE;

    dns = CkDnsW_Create();

    json = CkJsonObjectW_Create();
    CkJsonObjectW_putEmitCompact(json,FALSE);

    success = CkDnsW_Query(dns,L"NS",L"x.com",json);
    if (success == FALSE) {
        wprintf(L"%s\n",CkDnsW_lastErrorText(dns));
        CkDnsW_Dispose(dns);
        CkJsonObjectW_Dispose(json);
        return;
    }

    wprintf(L"%s\n",CkJsonObjectW_emit(json));

    //  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

    i = 0;
    count_i = CkJsonObjectW_SizeOfArray(json,L"answer.ns");
    while (i < count_i) {
        CkJsonObjectW_putI(json,i);
        name = CkJsonObjectW_stringOf(json,L"answer.ns[i].name");
        ttl = CkJsonObjectW_IntOf(json,L"answer.ns[i].ttl");
        domain = CkJsonObjectW_stringOf(json,L"answer.ns[i].domain");
        i = i + 1;
    }



    CkDnsW_Dispose(dns);
    CkJsonObjectW_Dispose(json);

    }