#include <stdio.h>
#include <string.h>

#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>

#include <pthread.h>

const NTHREADS = 300;

char *name = "www.google.com";

void lookup(void *arg) {
  struct addrinfo *res;
  struct addrinfo hints;
  memset(&hints, 0, sizeof(struct addrinfo));

  hints.ai_flags = AI_ALL | AI_V4MAPPED | AI_CANONNAME;
  int e = getaddrinfo(name, NULL, &hints, &res);
  if (e != 0) {
    if (e == EAI_NONAME) {
      printf("no such host\n", e);
    } else {
      printf("error %d\n", e);
    }
    return;
  }
  freeaddrinfo(res);
}

int main() {
  pthread_t threads[NTHREADS];
  int i;

  for (i = 0; i < NTHREADS; ++i) {
    pthread_create(&threads[i], NULL, lookup, NULL);
  }

  for (i = 0; i < NTHREADS; ++i) {
    pthread_join(threads[i], NULL);
  }

  return 0;
}