/*?
?*?this?is?a?sample?when?ntd?acts?as?tcp?client
?*/

#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?
#include?

#include?“nser.h“

void?set_param（int?fd）;
void?set_report（int?fd）;
void?do_communicate（int?fd）;
void?send_time_break（fd）;
void?send_close（fd）;
void?err_exit（）;
?
#define?LOCAL_IPADDR	“192.168.0.91“			//?sckcfg?N?-rip?LOCAL_IPADDR
#define?LOCAL_PORT		5000					//?sckcfg?N?-rt?LOCAL_PORT

int?main（int?argc?char?**?argv）
{
	int					socket_fd?listen_fd;
	struct?sockaddr_in	local_ip;
	int					nbio?=?1;

	WSADATA	wsadata;
	WSAStartup（0x101?&wsadata）;

	memset（&local_ip?0?sizeof（local_ip））;
	local_ip.sin_family?=?AF_INET;
	local_ip.sin_port?=?htons（（unsigned?short）LOCAL_PORT）;	
	local_ip.sin_addr.s_addr?=?inet_addr（LOCAL_IPADDR）;

	if?（local_ip.sin_addr.s_addr?==?INADDR_NONE）?
	{
		printf（“inet_addr?error\n“）;
		err_exit（）;
	}

	if?（（listen_fd?=?socket（AF_INET?SOCK_STREAM?0））?	{
		printf（“tcp?socket?error\n“）;
		err_exit（）;
	}

	if?（bind（listen_fd?（struct?sockaddr?*）&local_ip?sizeof（local_ip））?	{
		printf（“tcp?bind?error\n“）;
		err_exit（）;
	}

	listen（listen_fd?1）;
	
	socket_fd?=?accept（listen_fd?NULL?NULL）;

	nbio?=?1;
	ioctlsocket（socket_fdFIONBIO&nbio）;

	set_param（socket_fd）;
	set_report（socket_fd）;
	do_communicate（socket_fd）;

	WSACleanup（）;
	return?0;
}

void?set_param（int?fd）
{
	unsigned?char	mask;
	unsigned?char	mode;
	unsigned?char	flow;
	unsigned?char	ctrl;
	unsigned?long	baud;

	unsigned?char	buf[32];

	mode?=?CS8?|?STOP1?|?PAR_NONE;		//?8?bits?data?1?bit?stop?no?parity
	flow?=?FLOW_NONE;					//?no?flowctrl
	ctrl?=?C_DTR?|?C_RTS;				//?DTR?on?RTS?on
	baud?=?9600;						//?baud?is?9600bps

	mask?=?MASK_MODE?|?MASK_FLOW?|?MASK_CTRL?|?MASK_BAUD;

	buf[0]?=?0xff;
	buf[1]?=?SET_SERIAL;
	buf[2]?=?mask;
	buf[3]?=?mode;
	buf[4]?=?flow;
	buf[5]?=?ctrl;
	buf[6]?=?baud?>>?24;
	buf[7]?=?baud?>>?16;
	buf[8]?=?baud?>>?8;
	buf[9]?=?baud;

	send（fd?（char?*）buf?10?0）;
}

void?send_break（int?fd?int?set_break）
{
	unsigned?char	mask;
	unsigned?char	mode;
	unsigned?char	flow;
	unsigned?char	ctrl;
	unsigned?long	baud;

	unsigned?char	buf[10];

	if?（set_break）
		mode?=?SET_BREAK;		//?8?bits?data?1?bit?stop?no?parity
	else
		mode?=?CLEAR_BREAK;

	flow?=?FLOW_NONE;					//?no?flowctrl
	ctrl?=?C_DTR??|?C_RTS;				//?DTR?on?RTS?on
	baud?=?9600;						//?baud?is?9600bps

	mask?=?MASK_BRK;

	buf[0]?=?0xff;
	buf[1]?=?SET_SERIAL;
	buf[2]?=?mask;
	buf[3]?=?mode;
	buf[4]?=?flow;
	buf[5]?=?ctrl;
	buf[6]?=?baud?>>?24;
	buf[7]?=?baud?>>?16;
	buf[8]?=?baud?>>?8;
	buf[9]?=?baud;

	send（fd?（char?*）buf?10?0）;
}

void?set_report（int?fd）
{
	unsigned?char	type;
	unsigned?char	buf[3];

	type?=?REPORT_IF_CHANGED;		//?after?do?this??ntd?will?report?status?w