rprintmsg.c revision 302408 
1/* @(#)rprintmsg.c	2.1 88/08/11 4.0 RPCSRC */
2/*
3 * rprintmsg.c: remote version of "printmsg.c"
4 */
5#include <stdio.h>
6#include <rpc/rpc.h>		/* always need this */
7#include "msg.h"		/* need this too: will be generated by rpcgen*/
8
9main(argc, argv)
10	int argc;
11	char *argv[];
12{
13	CLIENT *cl;
14	int *result;
15	char *server;
16	char *message;
17
18	if (argc < 3) {
19		fprintf(stderr, "usage: %s host message\n", argv[0]);
20		exit(1);
21	}
22
23	/*
24	 * Remember what our command line arguments refer to
25	 */
26	server = argv[1];
27	message = argv[2];
28
29	/*
30	 * Create client "handle" used for calling MESSAGEPROG on the
31	 * server designated on the command line. We tell the rpc package
32	 * to use the "tcp" protocol when contacting the server.
33	 */
34	cl = clnt_create(server, MESSAGEPROG, MESSAGEVERS, "tcp");
35	if (cl == NULL) {
36		/*
37		 * Couldn't establish connection with server.
38		 * Print error message and die.
39		 */
40		clnt_pcreateerror(server);
41		exit(1);
42	}
43
44	/*
45	 * Call the remote procedure "printmessage" on the server
46	 */
47	result = printmessage_1(&message, cl);
48	if (result == NULL) {
49		/*
50		 * An error occurred while calling the server.
51	 	 * Print error message and die.
52		 */
53		clnt_perror(cl, server);
54		exit(1);
55	}
56
57	/*
58	 * Okay, we successfully called the remote procedure.
59	 */
60	if (*result == 0) {
61		/*
62		 * Server was unable to print our message.
63		 * Print error message and die.
64		 */
65		fprintf(stderr, "%s: sorry, %s couldn't print your message\n",
66			argv[0], server);
67		exit(1);
68	}
69
70	/*
71	 * The message got printed on the server's console
72	 */
73	printf("Message delivered to %s!\n", server);
74}
75