xref: /src/share/doc/psd/20.ipctut/udgramsend.c

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.\"	@(#)udgramsend.c	8.1 (Berkeley) 6/8/93
.\"
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/un.h>
#include <stdio.h>

#define DATA "The sea is calm tonight, the tide is full . . ."

/*
 * Here I send a datagram to a receiver whose name I get from the command
 * line arguments.  The form of the command line is udgramsend pathname
 */

main(argc, argv)
	int argc;
	char *argv[];
{
	int sock;
	struct sockaddr_un name;

	/* Create socket on which to send. */
	sock = socket(AF_UNIX, SOCK_DGRAM, 0);
	if (sock < 0) {
		perror("opening datagram socket");
		exit(1);
	}
	/* Construct name of socket to send to. */
	name.sun_family = AF_UNIX;
	strcpy(name.sun_path, argv[1]);
	/* Send message. */
	if (sendto(sock, DATA, sizeof(DATA), 0,
	    &name, sizeof(struct sockaddr_un)) < 0) {
		perror("sending datagram message");
	}
	close(sock);
}