Server rewrite - After the rewrite

struct addrinfo hints, *res, *res0;
int s, i, on = 1;

memset(&hints, 0, sizeof(hints));
hints.ai_family = PF_UNSPEC;
hints.ai_socktype = SOCK_STREAM;
hints.ai_flags = AI_PASSIVE;
error = getaddrinfo(NULL, "http", &hints,
            &res0);
if (error) {
    fprintf(stderr, "%s", gai_strerror(error));
    exit(1);
}
/* res0 has chain of wildcard addrs */