41 lines
1.2 KiB
C
41 lines
1.2 KiB
C
|
/* Internet Socket Example using sockaddr_in.
|
||
|
|
Copyright (C) 1991-2022 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, see <https://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;
|
||
|
|
}
|