/*
** File name:	GETSYI_CLNT_CALLRPC.C
**
** Copyright (c) 1991, by
** Process Software Corporation
** Framingham, Massachusetts
**
** This file along with GETSYI_CLNT_SUBS.C implement a client for the getsyi
** protocol.  This particular client uses the RPC callrpc function.  Although
** this client does not use the GETSYI_CLNT.C file that was generated by
** RPCGEN, it is still helpful to create a GETSYI.X file and use RPCGEN to
** create the GETSYI.H and GETSYI_XDR.C files.
**
*/

/*
** Include files
*/
#include <SSDEF.H>			/* status code definitions (SS$_OPINCOMPL) */
#include "TCPWARE_INCLUDE:RPC.H"
#include "GETSYI.H"		/* created by RPCGEN */
#include "GETSYI_DEF.H"

/*
** Declare Functions
*/
longw	parse_command_line();
void	write_output();

/*
** Variables
**
** The transport that the client will use to contact the server.  Since the
** callrpc RPC function must use UDP, do not allow the user to specify a
** transport.  This is done by initially setting transport to the string "UDP".
*/
globaldef char	transport[4] = {"UDP"};

/*
** The name of the server's host.  An initial value of 0 allows the user to
** specify any host.
*/
globaldef char	*host = 0;

static readonly char	usage[] =
	"Command format: getsyi [-d#] [-hhost] [-nnode] code [code...]\n";

/*
****************************************
**
**		Main program
**
** Abstract:
**	This client program demonstrates the use of the callrpc function.
*/
main( argc, argv)
  int	argc;
  char	*argv[];
{
	longw		status;		/* VMS status code */
	int		rpc_status;	/* callrpc status code */
	getsyi_args	args;		/* request sent to server */
	getsyi_res	results;	/* reply received from server */

/*
** Parse the command line that the user entered.  After this function call, the
** variable host points the name of the server's host and args contains all of
** the information that will be sent to the server.
*/
	_error( status = parse_command_line( argc, argv, &args))
	{
	  if( status == SS$_BADPARAM)
	    printf( usage);
	  exit( status);
	}
/*
** results must be zeroed so that xdr_getsyi_res will allocate the memory.
** Otherwise, xdr_getsyi_res assumes that results contains the addresses of
** valid buffers.
*/
	bzero( &results, sizeof( results));
/*
** Unlike the clnt_call function, callrpc does not take a client handle. 
** Instead it takes the information that is required to create the client
** handle.  This include the hostname and the program and version numbers.
*/
	if( rpc_status = callrpc( host, GETSYI_PROG, GETSYI_VERS_1,
		GETSYI_PROC_1, xdr_getsyi_args, &args, xdr_getsyi_res,
		&results) != 0)
	{
	  printf( "Unable to call the server\n");
	  clnt_perrno( rpc_status);	/* print why callrpc failed */
	  exit( SS$_OPINCOMPL);
	}
/*
** Display the output for the user to see.
*/
	write_output( &args, &results);
	exit( SS$_NORMAL);
}

/* end file GETSYI_CLNT_CALLRPC.C */