| /* Internet Socket Example using sockaddr_in. |
| Copyright (C) 1991-2014 Free Software Foundation, Inc. |
| |
| This program is free software; you can redistribute it and/or |
| modify it under the terms of the GNU General Public License |
| as published by the Free Software Foundation; either version 2 |
| of the License, or (at your option) any later version. |
| |
| This program is distributed in the hope that it will be useful, |
| but WITHOUT ANY WARRANTY; without even the implied warranty of |
| MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| GNU General Public License for more details. |
| |
| You should have received a copy of the GNU General Public License |
| along with this program; if not, if not, see <http://www.gnu.org/licenses/>. |
| */ |
| |
| #include <stdio.h> |
| #include <stdlib.h> |
| #include <sys/socket.h> |
| #include <netinet/in.h> |
| #include <netdb.h> |
| |
| void |
| init_sockaddr (struct sockaddr_in *name, |
| const char *hostname, |
| uint16_t port) |
| { |
| struct hostent *hostinfo; |
| |
| name->sin_family = AF_INET; |
| name->sin_port = htons (port); |
| hostinfo = gethostbyname (hostname); |
| if (hostinfo == NULL) |
| { |
| fprintf (stderr, "Unknown host %s.\n", hostname); |
| exit (EXIT_FAILURE); |
| } |
| name->sin_addr = *(struct in_addr *) hostinfo->h_addr; |
| } |