#include	"unp.h"

int sockatmark (int);

int
main(int argc, char **argv)
{
	int		listenfd, connfd, n, on=1;
	char	buff[100];

	if (argc == 2)
		listenfd = Tcp_listen(NULL, argv[1], NULL);
	else if (argc == 3)
		listenfd = Tcp_listen(argv[1], argv[2], NULL);
	else
		err_quit("usage: tcprecv04 [ <host> ] <port#>");

        Setsockopt(listenfd, SOL_SOCKET, SO_OOBINLINE, &on, sizeof(on));	
	connfd = Accept(listenfd, NULL, NULL);
	sleep(5);

	for ( ; ; ) {
		if (sockatmark(connfd))
			printf("at OOB mark\n");

		if ( (n = Read(connfd, buff, sizeof(buff)-1)) == 0) {
			printf("received EOF\n");
			exit(0);
		}
		buff[n] = 0;	/* null terminate */
		printf("read %d bytes: %s\n", n, buff);
	}
}


int
sockatmark(int fd)
{
        int             flag;

        if (ioctl(fd, SIOCATMARK, &flag) < 0)
                return(-1);
        return(flag != 0);
}