ping

local tArgs = { ... }
if #tArgs == 0 then
    print( "Usage: ping <ip> [<gateip>]" )
    return
end

if not open() then return end
if not getIP(tArgs[2]) then return end
print('Pinging '..tArgs[1])
for i=1,4 do
  start=os.clock()
  send(tArgs[1],'ping')
  mess,sIP=receive(3)
  if mess then
    if mess=='pong' then
      print('Answer from ',sIP,' time=',os.clock()-start)
    else
      print(sIP,': ',mess)
    end
  else
    print('Time out')
  end
  sleep(1)
end