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d9a17c07 | 1 | /* Internet Socket Example |
04277e02 | 2 | Copyright (C) 1991-2019 Free Software Foundation, Inc. |
d9a17c07 RM |
3 | |
4 | This program is free software; you can redistribute it and/or | |
5 | modify it under the terms of the GNU General Public License | |
6 | as published by the Free Software Foundation; either version 2 | |
7 | of the License, or (at your option) any later version. | |
8 | ||
9 | This program is distributed in the hope that it will be useful, | |
10 | but WITHOUT ANY WARRANTY; without even the implied warranty of | |
11 | MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the | |
12 | GNU General Public License for more details. | |
13 | ||
14 | You should have received a copy of the GNU General Public License | |
5a82c748 | 15 | along with this program; if not, see <https://www.gnu.org/licenses/>. |
d9a17c07 RM |
16 | */ |
17 | ||
28f540f4 RM |
18 | #include <stdio.h> |
19 | #include <stdlib.h> | |
20 | #include <sys/socket.h> | |
21 | #include <netinet/in.h> | |
22 | ||
d9a17c07 | 23 | int |
001426b8 | 24 | make_socket (uint16_t port) |
28f540f4 RM |
25 | { |
26 | int sock; | |
27 | struct sockaddr_in name; | |
28 | ||
29 | /* Create the socket. */ | |
30 | sock = socket (PF_INET, SOCK_STREAM, 0); | |
31 | if (sock < 0) | |
32 | { | |
33 | perror ("socket"); | |
34 | exit (EXIT_FAILURE); | |
35 | } | |
36 | ||
37 | /* Give the socket a name. */ | |
38 | name.sin_family = AF_INET; | |
39 | name.sin_port = htons (port); | |
40 | name.sin_addr.s_addr = htonl (INADDR_ANY); | |
41 | if (bind (sock, (struct sockaddr *) &name, sizeof (name)) < 0) | |
42 | { | |
43 | perror ("bind"); | |
44 | exit (EXIT_FAILURE); | |
45 | } | |
46 | ||
47 | return sock; | |
48 | } |