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

#include <arpa/inet.h>
#include <netinet/in.h>

#include <err.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>

static void
usage(const char *cmd)
{
        fprintf(stderr, "%s -n count\n", cmd);
        exit(1);
}

int
main(int argc, char *argv[])
{
        int i, opt, count;

        count = 0;
        while ((opt = getopt(argc, argv, "n:")) != -1) {
                switch (opt) {
                case 'n':
                        count = strtol(optarg, NULL, 10);
                        break;

                default:
                        usage(argv[0]);
                }
        }
        if (count == 0)
                usage(argv[0]);

        for (i = 0; i < count; ++i) {
                int s;

                s = socket(AF_INET, SOCK_DGRAM, 0);
                if (s < 0)
                        err(2, "socket failed");
                close(s);
        }
        printf("done\n");
        exit(0);
}