#include "stdafx.h"
#include <stdio.h>
#include "winsock2.h"
#include "Ws2tcpip.h"

int _tmain(int argc, _TCHAR* argv[])
{
 
  WSADATA wsaData;
  SOCKET SendSocket;
  sockaddr_in RecvAddr, source_sin;
 
  char SendBuf[1469];
  int BufLen = 1469;

  int iOptVal = 64;
  int iOptLen = sizeof(int);
  int ret, nLeft;
  DWORD nBytesRead, nBytesToRead = 1024;

  WSAStartup(MAKEWORD(2,2), &wsaData);

  SendSocket = socket(AF_INET, SOCK_DGRAM, IPPROTO_UDP);

  source_sin.sin_family = AF_INET;
  source_sin.sin_port = htons (0);
  source_sin.sin_addr.s_addr = htonl (INADDR_ANY);

  bind (SendSocket, (SOCKADDR*) &source_sin, sizeof (source_sin));

  setsockopt (SendSocket, IPPROTO_IP, IP_MULTICAST_TTL, (char*)&iOptVal, iOptLen);

  RecvAddr.sin_family = AF_INET;
  RecvAddr.sin_port = htons(4567);
  RecvAddr.sin_addr.s_addr = inet_addr ("225.6.7.8");

  HANDLE hFile;
  hFile = CreateFile("D:\\Games\\Far Cry\\FCData\\Textures.pak", GENERIC_READ, FILE_SHARE_READ, NULL, OPEN_EXISTING, FILE_ATTRIBUTE_NORMAL, 0);
  nLeft = GetFileSize(hFile, NULL);
  nBytesRead = htonl(nLeft);
  nBytesToRead = 4;
  ret = sendto(SendSocket, 
		(char*)&nBytesRead, 
		nBytesToRead, 
		0, 
		(SOCKADDR *) &RecvAddr, 
		sizeof(RecvAddr));

  while (nLeft > 0) 
  {
	  ReadFile(hFile, SendBuf, nBytesToRead, &nBytesRead, NULL) ;
	  ret = sendto(SendSocket, 
		SendBuf, 
		BufLen, 
		0, 
		(SOCKADDR *) &RecvAddr, 
		sizeof(RecvAddr));
	  nLeft -= ret;
  }
  CloseHandle(hFile);

  shutdown(SendSocket, 0x01);
  closesocket(SendSocket);

  printf("Exiting.\n");
  WSACleanup();
 
}