-- Not working on ubunut? lol:
-- sudo apt-get install liblua5.1-socket2
local socket = require("socket")
local server = socket.bind("localhost", 12345)
local ip, port = server:getsockname()
print("ip:" .. ip)
print("port:" .. port)
print("Waiting for data...")
while 1 do
  local client = server:accept()
  client:settimeout(1)
  local line, err = client:receive()
  if not err then
    print("recieved:"..line)
    client:send("ack\n")
  else
    print("err:"..err)
  end
  client:close()
end