Using res_nquery etc

[Pieter De Wit]

Hello Guys, (again :) )

I am still trying to get the MX records for a domain. This time I hope 
to have more luck. Here is a sample program that I am trying

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <string.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
#include <arpa/inet.h>
#include <arpa/nameser.h>
#include <resolv.h>
#include <netdb.h>
#include <sys/wait.h>
#include <signal.h>
#include <poll.h>
                                                                                                                                                         

res_state                       res;
char                            *dname;
int                             class;
int                             type;
unsigned        char            *answer;
int                             anslen;
                                                                                                                                                         

int main (void)
{
        //res->options=RES_INIT;
        //res_ninit (res);
        dname=malloc (1024);
        answer=malloc (1024);
        anslen=1024;
        sprintf (dname,"vodacom.co.za");
        type=T_MX;
        printf ("Result   : %i\n",res_nsearch 
(res,dname,class,type,answer,anslen));
        printf ("Error    : %s (%i)\n",hstrerror (errno),errno);
        printf ("Returned : %s\n",answer);
        return 0;
}

Now, I would like to know why this program seg. faults on res_nsearch (I 
have tried res_nquery - same result) Again google,resolv.h yielded no 
result. I doubt if there is even a page on the net about the resolver - 
except the IBM ones ???

btw - the above code does compile 100%

Thanks,

Pieter De Wit

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