Sending input to the remote application

Two types of input can be sent to a remote application:

• data, which will appear at the application's file descriptor 0

• UNIX signals, which will cause pre-defined signal handlers to be called

Data is sent using the rx_write routine. The usage is intended to be similar to the write system call.

int	written;	/* number of characters written by rx_write() */

written = rx_write(cnum, buf, len);

int	cnum;			/* connection number */

static void
sig_hand(signo)
int	signo;			/* signal number */
{
	/* assuming only the allowed 4 signals invoke this routine */
	(void) rx_signal(cnum, signo);
}

main()
{
	.
	.
	.
	/* set up signal handler routine */
	(void) signal(SIGHUP, sig_hand);
	(void) signal(SIGINT, sig_hand);
	(void) signal(SIGPIPE, sig_hand);
	(void) signal(SIGQUIT, sig_hand);
.
.
.
}