Windows Sockets PING Client Application Release 1 Version 94.01.22

  Written by:
      John A. Junod             Internet: <junodj@css583.gordon.army.mil>
      267 Hillwood Street                 <zj8549@trotter.usma.edu>
      Martinez, GA 30907      Compuserve: 72321,366 

  This program executable and all source code is released into the public
  domain.  You may use this code for any purpose but please give me a little
  credit for any use of this code.  The primary purpose of this application 
  was to learn what it takes to write a Windows Sockets Application.

  THE INFORMATION AND CODE PROVIDED IS PROVIDED AS IS WITHOUT WARRANTY 
  OF ANY KIND, EITHER EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO 
  THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR 
  PURPOSE. IN NO EVENT SHALL JOHN A. JUNOD BE LIABLE FOR ANY DAMAGES 
  WHATSOEVER INCLUDING DIRECT, INDIRECT, INCIDENTAL, CONSEQUENTIAL, LOSS 
  OF BUSINESS PROFITS OR SPECIAL DAMAGES, EVEN IF JOHN A. JUNOD HAS BEEN 
  ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.

  My development and testing was all completed at home on two 386 PC's using
  the Trumpet Windows Sockets DLL Alpha 18 with NCSA Telnet and WinQVT/Net 2.6
  and 3.9 as the remote host.  Source code may be compiled with Borland C++
  in large mode.

  Some code concepts and names are based on code that is copyright by the
  Regents of the University of California or code published in UNIX Network
  Programming by W. Richard Stevens or code in WATTCP or other public sources.
  The rest is based on my knowledge of Windows programming and my 
  interpretation of RFC 969 and the Windows Sockets API version 1.1.

  This code implements both a blocking and a non-blocking (async) ping.

  You can specify a hostname (or ip address) on the command line.  In that
  case an Async Ping is performed.

  Known problems:

  1) Most Windows Sockets DLL's do not support the use of RAW_SOCKETS
     so this application will not work with many implementations.  A
     couple that do work are: Trumpet Windows Sockets DLL Alpha 18, 
     FTP Software's PC/TCP

  2) "Network subsystem failure" probably means that the ARP request for
     a local host or default gateway failed.

94.01.22
  Increased stack size.
  Added lookup option.