// mftpSend.cpp : Defines the entry point for the console application.
//

#include "stdafx.h"


#include   <winsock2.h>   
#include   <ws2tcpip.h>   
#include   <stdio.h>   


#include <WINSOCK2.H>
#pragma comment(lib,"ws2_32.lib")
#include <WS2tcpip.h>

#define   BUFFSIZE   2048   
#define   IP_ADDR             "225.0.0.5"             
#define   DEST_PORT           5000   

int   main(int   argc,char   *argv[])   
{   
	int   sockfd;   
	struct   sockaddr_in   addr;   
	char   szError[100];   
	char   buf[]   =   "Hello,   World!";   
	int   ttl   =   255   ;   //   Arbitrary   TTL   value.   
    
	WSADATA   WSAData;   
	WORD     wVersionRequested;   
	wVersionRequested   =   MAKEWORD(2,   2);   
	if   (WSAStartup   (wVersionRequested   ,   &WSAData)   !=   0)     
	{   
		printf   ("recver:Initialize   Winsock   error!");   
		exit(1);   
	}   
	if   (LOBYTE(WSAData.wVersion)   !=   2   ||   HIBYTE(WSAData.wVersion)   !=   2   )   {   
		WSACleanup(   );   
		printf   ("setsockopt   failed!   Error:   %d",   WSAGetLastError   ());   
		exit(1);   
	}     
    
	addr.sin_family   =   AF_INET;   
	addr.sin_port   =   htons(DEST_PORT);   
	addr.sin_addr.s_addr   =   inet_addr(IP_ADDR);   
	
	if   ((sockfd=socket(AF_INET,SOCK_DGRAM,0))   <   0)   {   
		printf("sender:new   a   socket   error!\n");   
		exit(1);           
	}   
    
	if(setsockopt(sockfd,   IPPROTO_IP,   IP_MULTICAST_TTL,   (char   *)&ttl,   sizeof(ttl))!=0)     
	{   
		printf("error   setsockopt   IP_MULTICAST_TTL\n");   
		exit(1);   
	}   
	/*   
	if   (bind(sockfd,(struct   sockaddr   *)&recver_addr,sizeof(recver_addr))   <   0)   {   
	closesocket(sockfd);   
	printf("recver:bind   socket   error!\n");   
	exit(1);           
	}   
	*/
	int i = 0;
	while( i <100)
	{	
		//printf("input data:");
		//scanf("%s",&buf);
		if   (sendto   (sockfd,   buf,   sizeof(buf)   ,   0,   (struct   sockaddr   *)&addr,   sizeof(addr))   
			==   SOCKET_ERROR)   
		{   
			wsprintf   (szError,   TEXT("sendto   failed!   Error:   %d"),     
				WSAGetLastError   ());   
			MessageBox   (NULL,   szError,   TEXT("Error"),   MB_OK);   
			closesocket   (sockfd);   
			return   FALSE;   
		}   
		else   
		{   
			printf("send   ok\n");   
		}
		i++;
	}

	//   Close   Sock.   
	closesocket   (sockfd);   
	WSACleanup   ();   
	return   0;   
}