Wake On Wan

sendMP.c

//code reference https://shadesfgray.wordpress.com/2010/12/17/wake-on-lan-how-to-tutorial/ 
//thx to Shades of Gray's blogger !
//I made some changes and make wol to wow by setting my router.

#include<stdio.h>
#include<stdlib.h>
#include<string.h>

#include<sys/socket.h>
#include<sys/types.h>

#include<netinet/in.h>
#include<arpa/inet.h>

/* select one to define
#define IP "www.yourdns.ddns.net"//wan
#define IP "211.74.180.72"//wan
#define IP "192.168.1.10"//lan
*/
unsigned char package[102];
unsigned char mac[6];
int main(void){
	int i;
	//make package
	for(i = 0 ; i < 6 ; i++)
		package[i] = 0xff;
	//your device's mac
	mac[0] = 0x38;
	mac[1] = 0x60;
	mac[2] = 0x77;
	mac[3] = 0xc7;
	mac[4] = 0x53;
	mac[5] = 0x4e;
	//package end
	
	for(i = 1 ; i <= 16 ; i++)
		memcpy(&package[i*6] , &mac	, 6 * sizeof(unsigned char));

	int udpSocket;
	struct sockaddr_in udpClient, udpServer;
	int broadcast = 1;

	udpSocket = socket(AF_INET, SOCK_DGRAM, 0);

	//broadcast setting
	if (setsockopt(udpSocket, SOL_SOCKET, SO_BROADCAST, &broadcast, sizeof(broadcast)) == -1) {
		perror("setsockopt (SO_BROADCAST)");
		exit(1);
	}
	udpClient.sin_family = AF_INET;
	udpClient.sin_addr.s_addr = INADDR_ANY;
	udpClient.sin_port = 0;

	bind(udpSocket, (struct sockaddr*)&udpClient, sizeof(udpClient));

	//server setting
	udpServer.sin_family = AF_INET;
	udpServer.sin_addr.s_addr = inet_addr(IP);
	udpServer.sin_port = htons(9);

	//send package
	sendto(udpSocket, &package, sizeof(unsigned char) * 102, 0, (struct sockaddr*)&udpServer, sizeof(udpServer));

	return 0;
}