int CheckForNewPacket(int Sock, char *pkt, int TimeOut)
{
	int len = sizeof(struct sockaddr);
	struct sockaddr_in from;
	fd_set readFd;
	timeval SelectTime;
	SelectTime.tv_sec = TimeOut;// wait 2 seconds
	SelectTime.tv_usec=0;
	FD_ZERO(&readFd);
	FD_SET(Sock,&readFd);
	int ret = select(255,&readFd,NULL,NULL,&SelectTime);
	//int ret = select(255,&readFd,NULL,NULL,&Selecttime); 
		//ret = Selec(255,&readFd,NULL,NULL,&SelectTime);

	if (FD_ISSET(Sock, &readFd)==1)
	{
		int len = sizeof(struct sockaddr);
		ret=recvfrom(Sock, (char *)pkt, sizeof(struct PktStruct), NULL,(struct sockaddr *)&from,&len);	
		if (ret>=0)
		{			
			unsigned int fp=ntohs(from.sin_port);
		//	printf("got pkt with message %s on port %d from ip=%s\n",pkt,ntohs(from.sin_port),inet_ntoa(from.sin_addr));		
			return ret;
		}
		else
		{
		/* // for windows only
			if (WSAECONNRESET==WSAGetLastError())
				printf("possibly sent a packet to an unopened port\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b\b");
			else
				printf("revfrom error %d %d\n",ret, WSAGetLastError());
				*/
		}
	}
	return -1;
	
}