evdns_test2.c

/*
 * Usage:
 *	% cc -DDEBUG -o evdns_test2 evdns_test2.c -levent
 *	% ./evdns_test2
 */
#include <sys/param.h>
#include <sys/time.h>

#include <event2/event.h>
#include <event2/event_struct.h>
#include <event2/dns.h>
#include <stdlib.h>

#ifdef DEBUG
#define DBG(_x)	printf _x
#else
#define DBG(_x)
#endif

static void
on_resolved(int res, char t, int c, int ttl, void *addr, void *arg)
{
	printf("%s()\n", __func__);
}

static void
on_timeout(int fd, short ev, void *ctx)
{
	printf("%s() calling evdns_shutdown(1)\n", __func__);
	evdns_shutdown(1);
}

int
main(int argc, char *argv[])
{
	struct timeval	 to = { 20, 500000 };
	struct event	 ev_to;

	event_init();

	evdns_init();
	evdns_clear_nameservers_and_suspend();
	evdns_nameserver_ip_add("127.0.0.1");
	evdns_resume();

	event_set(&ev_to, -1, 0, on_timeout, NULL);
	event_add(&ev_to, &to);

	/* nameserver doesn't work */
	evdns_resolve_ipv4("www.iij.ad.jp", 0, on_resolved, (void *)1); 
	evdns_resolve_ipv4("www.iij.ad.jp", 0, on_resolved, (void *)1); 
	event_loop(EVLOOP_ONCE);	/* see periodic() */

	event_loop(0);

	exit(EXIT_SUCCESS);
}