getaddrinfo one-family test

test-gai.c

#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
#include <netdb.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/stat.h>
#include <fcntl.h>
#include <pthread.h>
#include <errno.h>
#include <assert.h>


int main(int argc, char *argv[]) {
  struct addrinfo hints;
  struct addrinfo *result, *rp;
  int s, j;
  int sock = -1;

  assert((argc>2) || "Need 2 arguments: integer for address family and a host name" == 0);

  memset(&hints, 0, sizeof(struct addrinfo));
  hints.ai_family = atoi(argv[1]);
  hints.ai_socktype = SOCK_STREAM;
  hints.ai_flags = 0;
  hints.ai_protocol = 0;

  s = getaddrinfo(argv[2], "http", &hints, &result);
  if (s != 0) {
    printf("getaddrinfo: %s\n", gai_strerror(s));
    exit(1);
  }
  for (rp = result; rp != NULL; rp = rp->ai_next) {
    printf("AF: %d, socktype: %d, proto: %d\n",
           rp->ai_family, rp->ai_socktype, rp->ai_protocol);
  }
  if(result) {
    freeaddrinfo(result);
  }
}