snippet of code to be inserted in interface.c to replace gethostbyname

interface.c

int sockfd;
struct addrinfo hints, *servinfo, *p;
int rv;

memset(&hints, 0, sizeof hints);
hints.ai_family = AF_UNSPEC; // use AF_INET6 to force IPv6
hints.ai_socktype = SOCK_STREAM;

if ((rv = getaddrinfo(host, "http", &hints, &servinfo)) != 0) {
    fprintf(stderr, "getaddrinfo: %s\n", gai_strerror(rv));
    exit(1);
}

// loop through all the results and connect to the first we can
for (p = servinfo; p != NULL; p = p->ai_next) {
		s = -1;

		if ((sockfd = socket(p->ai_family, p->ai_socktype, p->ai_protocol)) == -1) {
        perror("socket");
        continue;
    }

  // specify the port to connect to
  p->ai_addr.sin_port = htons(port);
  
    if (connect(sockfd, p->ai_addr, p->ai_addrlen) == -1) {
        perror("connect");
        close(sockfd);
        continue;
    }

    break; // if we get here, we must have connected successfully
}

freeaddrinfo(servinfo); // all done with this structure

if (p == NULL) {
    // looped off the end of the list with no connection
    fprintf(stderr, "failed to connect\n");
		s = -1;
}
else {
	s  = sockfd;
}