socket = require("socket")
lanVS,port = "192.168.2.",22
timeout = 0.2

loadingBar = true
loadingBarWidth = 60

ips = {}

if loadingBar then
  print("Geschätzte zeit: "..timeout*256 .."s")
  for i=1,loadingBarWidth do
    io.write("_")
  end
  print()
end
for i=0,254 do
  tcp = assert(socket.tcp())
  tcp:settimeout(timeout)
  if not loadingBar then
	print(lanVS..i)
  else
    if math.floor(loadingBarWidth/256*(i+1)) ~= math.floor(loadingBarWidth/256*(i+2)) then
      io.write("#")
	end
  end
  if tcp:connect(lanVS..i, port) == 1 then
	if not loadingBar then
	  print(lanVS..i.." has open port: "..port)
	end
	table.insert(ips,i)
  end
  tcp:close()
end

print("\nRecap:")
for i=1,#ips do
  print(lanVS..ips[i]..":"..port)
end