Case 8000 Series - Page 158

/********************************************************************************************/
/* TITLE : Printer TELNET application */
/********************************************************************************************/
/* set #define constants for BSD_4_2+ ULTRIX*/
#include <sys/types/h>
#include <netinet/in.h>
#include <sys/socket.h>
#include <netdb.h>
#include <stdio.h>
#include <signal.h>
#define DSTPORT 2000 /* Default TCP port number - dec. - 1 per app*/
#define NULADDR (struct sockaddr *) /* System assigns socket address */
#define TYPE SOCK_STREAM /* Sequenced, reliable two way connection */
#define LINGER_TIME 1
#define BUFF_SIZE 512
char buff[ BUFF_SIZE ]; /* Buffer to hold text in transit */
int newline = 0 ; /* non-zero(2 then 1) when CR RETURN found */
char previous = '\000'; /* remember the previous character */
int sock = -1; /* Socket descriptor (like a file descriptor */
char *progname; /* program name o/p with error messages */
int expand = 0; /* True when option to expand \r to \r\n selected */
main( argc, argv)
register int argc;
register char *argv[];
{
int size; /* Number of bytes in the buffer */
struct sockaddr_in addr; /* Describes socket connection */
struct linger optval; /* for setting socket option */
struct hostent *gethostbyname(), *raddr; /* For finding internet address */
interrupts() /* Be prepared for interrupts */
/* Verify the parameters and make a connection */
if ((argc < 2) || (argc > 4 ))
error( “Usage: %s host-name [port] [-n]” , argv[0] );
if (argc ==4)
{
if (strcmp(argv[3], ”-n”) )
error (”Usage: %s host-name [port] [-n]” , argv[0] );
else
expand = 1;
}
if ((argc == 3) && (strcmp(argv[2], ”-n”) == 0 ) )
expand = 1;
progname = argv[0];
if ((raddr = gethostbyname(argv[1]) ) == 0)
error(”Unknown host %s”, agrv[1] );
addr.sin_addr.s_addr = *((long *) raddr->h_addr);
X870-300351 Issue 1 H-2 Rev.0