converting host to ip by sockaddr_in gethostname etc

Question

i need help converting hostname to ip and inserting to sockaddr_in->sin_addr to be able assign to char. For example i input: localhost and it gives me 127.0.0.1

I fo

Answer 1

Try something like this:

  struct hostent        *he;
  struct sockaddr_in  server;
  int                 socket;

  const char hostname[] = "localhost";

  /* resolve hostname */
  if ( (he = gethostbyname(hostname) ) == NULL ) {
      exit(1); /* error */
  }

  /* copy the network address to sockaddr_in structure */
  memcpy(&server.sin_addr, he->h_addr_list[0], he->h_length);
  server.sin_family = AF_INET;
  server.sin_port = htons(1337);

  /* and now  you can connect */
  if ( connect(socket, (struct sockaddr *)&server, sizeof(server) ) {
      exit(1); /* error */
  }

I wrote this code straight from my memory so I cannot guarantee that it works but I am pretty sure it should be OK.