Unicode C

Transition from MailMan.MxLookup to Dns.Query

Provides instructions for replacing deprecated MxLookup method calls with the Chilkat Dns class. Unicode C

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

void ChilkatSample(void)
    {
    BOOL success;
    HCkMailManW mailman;
    const wchar_t *emailAddr;
    const wchar_t *domain;
    HCkDnsW dns;
    HCkJsonObjectW json;
    int i;
    int count_i;

    success = FALSE;

    mailman = CkMailManW_Create();

    //  ...
    //  ...

    emailAddr = L"joe@example.com";

    //  ------------------------------------------------------------------------
    //  The MxLookup method is deprecated:

    domain = CkMailManW_mxLookup(mailman,emailAddr);
    if (CkMailManW_getLastMethodSuccess(mailman) == FALSE) {
        wprintf(L"%s\n",CkMailManW_lastErrorText(mailman));
        CkMailManW_Dispose(mailman);
        return;
    }

    //  ------------------------------------------------------------------------
    //  Do the equivalent using the Chilkat DNS class

    dns = CkDnsW_Create();

    json = CkJsonObjectW_Create();

    //  This gets all MX domains for an email address.  (Typically one domain.)
    //  The preferred domain will be at index 0 (see below).
    success = CkDnsW_Query(dns,L"MX",emailAddr,json);
    if (success == FALSE) {
        wprintf(L"%s\n",CkDnsW_lastErrorText(dns));
        CkMailManW_Dispose(mailman);
        CkDnsW_Dispose(dns);
        CkJsonObjectW_Dispose(json);
        return;
    }

    i = 0;
    count_i = CkJsonObjectW_SizeOfArray(json,L"answer.mx");
    while (i < count_i) {
        CkJsonObjectW_putI(json,i);
        domain = CkJsonObjectW_stringOf(json,L"answer.mx[i].domain");
        wprintf(L"%s\n",domain);
        i = i + 1;
    }



    CkMailManW_Dispose(mailman);
    CkDnsW_Dispose(dns);
    CkJsonObjectW_Dispose(json);

    }