1 .\" Copyright (c) 1986, 1993
2 .\"	The Regents of the University of California.  All rights reserved.
3 .\"
4 .\" %sccs.include.redist.roff%
5 .\"
6 .\"	@(#)udgramsend.c	8.1 (Berkeley) 06/08/93
7 .\"
8 #include <sys/types.h>
9 #include <sys/socket.h>
10 #include <sys/un.h>
11 #include <stdio.h>
12 
13 #define DATA "The sea is calm tonight, the tide is full . . ."
14 
15 /*
16  * Here I send a datagram to a receiver whose name I get from the command
17  * line arguments.  The form of the command line is udgramsend pathname
18  */
19 
20 main(argc, argv)
21 	int argc;
22 	char *argv[];
23 {
24 	int sock;
25 	struct sockaddr_un name;
26 
27 	/* Create socket on which to send. */
28 	sock = socket(AF_UNIX, SOCK_DGRAM, 0);
29 	if (sock < 0) {
30 		perror("opening datagram socket");
31 		exit(1);
32 	}
33 	/* Construct name of socket to send to. */
34 	name.sun_family = AF_UNIX;
35 	strcpy(name.sun_path, argv[1]);
36 	/* Send message. */
37 	if (sendto(sock, DATA, sizeof(DATA), 0,
38 	    &name, sizeof(struct sockaddr_un)) < 0) {
39 		perror("sending datagram message");
40 	}
41 	close(sock);
42 }
43