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04277e02d7
* All files with FSF copyright notices: Update copyright dates using scripts/update-copyrights. * locale/programs/charmap-kw.h: Regenerated. * locale/programs/locfile-kw.h: Likewise.
72 lines
1.9 KiB
C
72 lines
1.9 KiB
C
/* Example of Reading Datagrams
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Copyright (C) 1991-2019 Free Software Foundation, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, see <http://www.gnu.org/licenses/>.
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*/
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#include <stdio.h>
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#include <errno.h>
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#include <unistd.h>
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#include <stdlib.h>
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#include <sys/socket.h>
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#include <sys/un.h>
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#define SERVER "/tmp/serversocket"
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#define CLIENT "/tmp/mysocket"
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#define MAXMSG 512
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#define MESSAGE "Yow!!! Are we having fun yet?!?"
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int
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main (void)
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{
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extern int make_named_socket (const char *name);
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int sock;
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char message[MAXMSG];
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struct sockaddr_un name;
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size_t size;
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int nbytes;
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/* Make the socket. */
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sock = make_named_socket (CLIENT);
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/* Initialize the server socket address. */
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name.sun_family = AF_LOCAL;
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strcpy (name.sun_path, SERVER);
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size = strlen (name.sun_path) + sizeof (name.sun_family);
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/* Send the datagram. */
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nbytes = sendto (sock, MESSAGE, strlen (MESSAGE) + 1, 0,
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(struct sockaddr *) & name, size);
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if (nbytes < 0)
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{
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perror ("sendto (client)");
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exit (EXIT_FAILURE);
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}
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/* Wait for a reply. */
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nbytes = recvfrom (sock, message, MAXMSG, 0, NULL, 0);
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if (nbytes < 0)
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{
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perror ("recfrom (client)");
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exit (EXIT_FAILURE);
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}
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/* Print a diagnostic message. */
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fprintf (stderr, "Client: got message: %s\n", message);
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/* Clean up. */
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remove (CLIENT);
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close (sock);
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}
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