client.c

让你了解Unix进程间的通信是如何实现的

#include	"unpipc.h"		/* our header */
#include	"square.h"		/* generated by rpcgen */

int
main(int argc, char **argv)
{
	CLIENT		*cl;
	square_in	in;
	square_out	*outp;

	if (argc != 3)
		err_quit("usage: client <hostname> <integer-value>");

	cl = Clnt_create(argv[1], SQUARE_PROG, SQUARE_VERS, "tcp");

	in.arg1 = atol(argv[2]);
	if ( (outp = squareproc_1(&in, cl)) == NULL)
		err_quit("%s", clnt_sperror(cl, argv[1]));
	printf("result: %ld\n", outp->res1);

	in.arg1 *= 2;
	if ( (outp = squareproc_1(&in, cl)) == NULL)
		err_quit("%s", clnt_sperror(cl, argv[1]));
	printf("result: %ld\n", outp->res1);

	clnt_destroy(cl);

	pause();

	exit(0);
}