msgstruct.h

使用udp的broadcast方式写的c程序

#ifndef CONST_MESSAGE
#define CONST_MESSAGE "right"
#endif

#define NETPARAM	1
#define BROADPARAM	2

#define DEVICE_DVS_1
#ifdef	DEVICE_DVS_1
	#define	DEVICE_TYPE	"DVS"
	#define DEVICE_CHANNEL	1
#endif
#ifdef	DEVICE_DVS_4
	#define	DEVICE_TYPE	"DVS"
	#define DEVICE_CHANNEL	4
#endif
#ifdef	DEVICE_IPCAMERA
	#define DEVICE_TYPE	"IPCAMERA"
	#define DEVICE_CHANNEL	1
#endif

/*udp port*/
#ifndef UDP_PORT
#define UDP_PORT 8866
#endif
/*broadcast port*/
#ifndef BROADCAST_PORT
#define BROADCAST_PORT 6789
#endif

/*broadcast host name*/
#ifndef HOST_NAME
#define HOST_NAME "224.111.111.1"
#endif

#ifndef _MESSAGE_STRUCT_H_
#define _MESSAGE_STRUCT_H_

 /*save ip etc. to this struct*/
typedef struct netparam {
	u_char	message[12];
	u_char  msg_type;
	u_char  dev_type[10];
	u_char	mac_value[7];
	u_char	netmask_value[30];
	u_char	ip_value[30];
	u_char  reserve[10];
} nettype;
//广播包
typedef struct broadparam {
	u_char message[12];
	u_char  msg_type;
	u_char ipaddress[30];	
}broadcasttype;

#endif