Win32 how to get SRV DNS record in C/C++?

Question

Domain Name System

There was a need to get SRV records under Win32. What can be used for this? It is desirable that it be synchronous without any callback. Compatibility from Win2K is highly desirable, extreme case of XP and higher.

Answer 1

Found it myself:

#include <stdio.h>
#include <stdlib.h>
#include <Windows.h>
#include <Windns.h>


int main()
{
    DNS_STATUS status;
    PDNS_RECORD ret;
    status = DnsQuery("_xmpp-client._tcp.yandex.ru",
                        DNS_TYPE_SRV,
                        DNS_QUERY_STANDARD,
                        NULL,
                        &ret,
                        NULL);

    if(status == 0) {
        printf("SRV %s:%d\n", ret->Data.SRV.pNameTarget, ret->Data.SRV.wPort);
        DnsRecordListFree(ret, 0);
    } else {
        printf("Record not found.\n");
    }

    return 0;
}

DnsQuery