void printpacket(uint16 size, uint8* data){
        AnsiString tmp="";

        for(int i= 0 ; i<size; i++){
                if(i% 16 == 0 ) {
                        printf("%s\n",tmp.c_str()); tmp="";
                }
                tmp+=char((int(data[i]/ 16 )< 10 )?(int(data[i])/ 16 +'0'):(int(data[i]/ 16 )+'A'- 10 ));
                tmp+=char((data[i]% 16 < 10 )?(data[i]% 16 +'0'):(data[i]% 16 +'A'- 10 ));
                tmp+=' ';
        }
        printf("%s\n",tmp.c_str()); tmp="";
}

int main(int argc, char *argv[])
{
	random();
	std::string host="172.21.17.5";
	unsigned short port= 53 ;
	sockaddr_in sa;
	memset(&sa,NULL,sizeof(sa));
	sa.sin_family = AF_INET;
	struct hostent *hp;
	hp = gethostbyname(host.c_str());
	memcpy ((char *)&sa.sin_addr,hp->h_addr,hp->h_length);
	sa.sin_port = htons(port);
	int sckt = socket(AF_INET, SOCK_DGRAM,  0 );

	ByteBuffer buf;
	buf.add((uint16)rand());
	uint16 flags=0x0000;
	buf.add((uint16)flags);
	buf.add((uint16) 1 );
	buf.add((uint16) 0 );
	buf.add((uint16) 0 );
	buf.add((uint16) 0 );
	buf.add((uint8) 3 );
	buf.add((uint8*)"www", 3 );
	buf.add((uint8) 8 );
	buf.add((uint8*)"belevern", 8 );
	buf.add((uint8) 2 );
	buf.add((uint8*)"ru", 2 );
	buf.add((uint8) 0 );
	buf.add((uint16) 1 );
	buf.add((uint16) 1 );
	sendto(sckt, buf.bufstr, buf.size,  0 ,(sockaddr*)&sa,sizeof(sa));
	char bufstr[ 100 ];
	printpacket(buf.size,buf.bufstr);
	sockaddr_in server_addr;
	int server_addr_size=sizeof(server_addr);
	uint16 size=recvfrom(sckt, bufstr,  100 ,  0 ,(sockaddr*)&server_addr, (socklen_t*)&server_addr_size);
	printpacket(size,(uint8*)bufstr);
	close(sckt);
	return  0 ;
}