BSD 4_3_Net_2 release

[unix-history] / usr / src / lib / librpc / demo / msg / rprintmsg.c

/* @(#)rprintmsg.c      2.1 88/08/11 4.0 RPCSRC */
/*
* rprintmsg.c: remote version of "printmsg.c"
*/
#include <stdio.h>
#include <rpc/rpc.h>            /* always need this */
#include "msg.h"                /* need this too: will be generated by rpcgen*/

main(argc, argv)
       int argc;
       char *argv[];
{
       CLIENT *cl;
       int *result;
       char *server;
       char *message;

       if (argc < 3) {
               fprintf(stderr, "usage: %s host message\n", argv[0]);
               exit(1);
       }

       /*
        * Remember what our command line arguments refer to
        */
       server = argv[1];
       message = argv[2];

       /*
        * Create client "handle" used for calling MESSAGEPROG on the
        * server designated on the command line. We tell the rpc package
        * to use the "tcp" protocol when contacting the server.
        */
       cl = clnt_create(server, MESSAGEPROG, MESSAGEVERS, "tcp");
       if (cl == NULL) {
               /*
                * Couldn't establish connection with server.
                * Print error message and die.
                */
               clnt_pcreateerror(server);
               exit(1);
       }
       
       /*
        * Call the remote procedure "printmessage" on the server
        */
       result = printmessage_1(&message, cl);
       if (result == NULL) {
               /*
                * An error occurred while calling the server. 
                * Print error message and die.
                */
               clnt_perror(cl, server);
               exit(1);
       }

       /*
        * Okay, we successfully called the remote procedure.
        */
       if (*result == 0) {
               /*
                * Server was unable to print our message. 
                * Print error message and die.
                */
               fprintf(stderr, "%s: sorry, %s couldn't print your message\n", 
                       argv[0], server);       
               exit(1);
       } 

       /*
        * The message got printed on the server's console
        */
       printf("Message delivered to %s!\n", server);
}