You may see memory leak when running ICMP multithread application on post-Vista OS

If you are developing ICMP multithread application, you may notice private bytes growing steadily and constantly when running on post-Vista OS, including Vista, Window Server 2008 and Windows 7.

For example:

int _tmain(int argc, _TCHAR* argv[])
{

      while(true){
  
           _beginthread(SendPing, 0, NULL);
           Sleep(50);
      }
      return 0;
}

void  SendPing(LPVOID lpParameter)
{
      HANDLE hIcmpFile;              // Handle for ICMP echo requests
      BOOL bRetVal;
 
      hIcmpFile = IcmpCreateFile();
 
      if (hIcmpFile == INVALID_HANDLE_VALUE)
      {
            //Print message
      }
      else
      {
           // close the echo request file handle
           bRetVal = IcmpCloseHandle(hIcmpFile);
          if(bRetVal)
          {
               //print message
          }
          else
          {
               //print message
          }
     }
 
     _endthread();

}