unsigned char* vnPSon; 
   
  vnPSon = new unsigned char[54]; 
  memset((void*)vnPSon, '\0', 54); 
   
  //ETHERNET II 
  memcpy((void*)vnPSon, (void*)"\xFF\xFF\xFF\xFF\xFF\xFF", 6); //Broadcast 
  memcpy((void*)(vnPSon+6), (void*)srcMac, 6); //Source MAC 
  memcpy((void*)(vnPSon+12), (void*)"\x08", 2); //IP Header 
   
  //IP HEADER 
  memcpy((void*)(vnPSon+14), (void*)"\x45", 1); //IPV4 
  memcpy((void*)(vnPSon+15), (void*)"\x00", 1); //Differnatied Services 
  unsigned short kpr = htons(46); 
  memcpy((void*)(vnPSon+16), (void*)&kpr , 2); //Header boyutu 
  memcpy((void*)(vnPSon+18), (void*)"\x0000", 2); //Id 
  memcpy((void*)(vnPSon+20), (void*)"\x40", 1); //IP Header flag 
  memcpy((void*)(vnPSon+21), (void*)"\x00", 1); //Offset 
  memcpy((void*)(vnPSon+22), (void*)"\x5F", 1); //TTL 255 saniye 
  memcpy((void*)(vnPSon+23), (void*)"\x06", 1); //Protokol 
  memcpy((void*)(vnPSon+24), (void*)"\x00\x00", 2); //Checksum 
  memcpy((void*)(vnPSon+26), (void*)&srcIp, 4); //Yerel ip 
  memcpy((void*)(vnPSon+30), (void*)&dstIp, 4); //Hedef ip 
   
  //TCP HEADER 
  memcpy((void*)(vnPSon+34), (void*)"\x0020", 2); //Kaynak port 
  unsigned short test = htons(dstPort); 
  memcpy((void*)(vnPSon+36), (void*)&test, 2); //Hedef port 
  memcpy((void*)(vnPSon+38), (void*)"\x00\x00\x00\x00", 4); //Sequence number 
  memcpy((void*)(vnPSon+42), (void*)"\x00\x00\x00\x00", 4); //Ack number 
  memcpy((void*)(vnPSon+46), (void*)"\x50", 1); //TCP Offset 
  memcpy((void*)(vnPSon+47), (void*)"\x02", 1); //Flag syn 
  memcpy((void*)(vnPSon+48), (void*)"\xFF", 2); //Window 
  memcpy((void*)(vnPSon+50), (void*)"\x0000", 2); //Checksum 
  memcpy((void*)(vnPSon+52), (void*)"\x0000", 2); //Urgent point

unsigned short *tempTcp = (unsigned short*)malloc(32); 
   
  memcpy((void*)tempTcp, (void*)(vnPSon+26), 8);//Kaynak ve hedef ip 
  memcpy((void*)(tempTcp+8), (void*)"\x00", 1);//Reserved 
  memcpy((void*)(tempTcp+9), (void*)"\x06", 1);//Protokol 
  memcpy((void*)(tempTcp+10), (void*)"\x0014", 2);//TCP Length 
  memcpy((void*)(tempTcp+12), (void*)(vnPSon+34), 20); 
   
  register unsigned long csum=0; 
  unsigned short *buffer=(unsigned short*)tempTcp; 
  unsigned short size=32; 
  while(size>1) 
  { 
  	csum += *buffer++; 
  	size -= 2; 
  } 
  if(size>1) csum += *(unsigned char*)buffer; 
   
  csum = (csum>>16) + (csum & 0xFFFF); 
  csum += (csum>>16); 
  return htons(~csum);