How to response http post with lua

[pouralise]

I have the code below to receive an http post from external server via port 8083. After that, how can I response so the server would get the http status code 200?

Code:

local socket = require("socket")
local server = assert(socket.bind("*", 8083))
local tcp = assert(socket.tcp())

while 1 do
  local client = server:accept()
  line = client:receive()
  client:send('HTTP/1.1 200 OK \n')
end