| /* Example of Reading Datagrams |
| 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 <errno.h> |
| #include <unistd.h> |
| #include <stdlib.h> |
| #include <sys/socket.h> |
| #include <sys/un.h> |
| |
| #define SERVER "/tmp/serversocket" |
| #define CLIENT "/tmp/mysocket" |
| #define MAXMSG 512 |
| #define MESSAGE "Yow!!! Are we having fun yet?!?" |
| |
| int |
| main (void) |
| { |
| extern int make_named_socket (const char *name); |
| int sock; |
| char message[MAXMSG]; |
| struct sockaddr_un name; |
| size_t size; |
| int nbytes; |
| |
| /* Make the socket. */ |
| sock = make_named_socket (CLIENT); |
| |
| /* Initialize the server socket address. */ |
| name.sun_family = AF_LOCAL; |
| strcpy (name.sun_path, SERVER); |
| size = strlen (name.sun_path) + sizeof (name.sun_family); |
| |
| /* Send the datagram. */ |
| nbytes = sendto (sock, MESSAGE, strlen (MESSAGE) + 1, 0, |
| (struct sockaddr *) & name, size); |
| if (nbytes < 0) |
| { |
| perror ("sendto (client)"); |
| exit (EXIT_FAILURE); |
| } |
| |
| /* Wait for a reply. */ |
| nbytes = recvfrom (sock, message, MAXMSG, 0, NULL, 0); |
| if (nbytes < 0) |
| { |
| perror ("recfrom (client)"); |
| exit (EXIT_FAILURE); |
| } |
| |
| /* Print a diagnostic message. */ |
| fprintf (stderr, "Client: got message: %s\n", message); |
| |
| /* Clean up. */ |
| remove (CLIENT); |
| close (sock); |
| } |