1 /* 2 * Copyright (c) 1986 The Regents of the University of California. 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms are permitted 6 * provided that the above copyright notice and this paragraph are 7 * duplicated in all such forms and that any documentation, 8 * advertising materials, and other materials related to such 9 * distribution and use acknowledge that the software was developed 10 * by the University of California, Berkeley. The name of the 11 * University may not be used to endorse or promote products derived 12 * from this software without specific prior written permission. 13 * THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR 14 * IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED 15 * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE. 16 */ 17 18 #ifndef lint 19 char copyright[] = 20 "@(#) Copyright (c) 1986 The Regents of the University of California.\n\ 21 All rights reserved.\n"; 22 #endif /* not lint */ 23 24 #ifndef lint 25 static char sccsid[] = "@(#)udgramsend.c 6.3 (Berkeley) 03/07/89"; 26 #endif /* not lint */ 27 28 #include <sys/types.h> 29 #include <sys/socket.h> 30 #include <sys/un.h> 31 #include <stdio.h> 32 33 #define DATA "The sea is calm tonight, the tide is full . . ." 34 35 /* 36 * Here I send a datagram to a receiver whose name I get from the command 37 * line arguments. The form of the command line is udgramsend pathname 38 */ 39 40 main(argc, argv) 41 int argc; 42 char *argv[]; 43 { 44 int sock; 45 struct sockaddr_un name; 46 47 /* Create socket on which to send. */ 48 sock = socket(AF_UNIX, SOCK_DGRAM, 0); 49 if (sock < 0) { 50 perror("opening datagram socket"); 51 exit(1); 52 } 53 /* Construct name of socket to send to. */ 54 name.sun_family = AF_UNIX; 55 strcpy(name.sun_path, argv[1]); 56 /* Send message. */ 57 if (sendto(sock, DATA, sizeof(DATA), 0, 58 &name, sizeof(struct sockaddr_un)) < 0) { 59 perror("sending datagram message"); 60 } 61 close(sock); 62 } 63