Lua TCP/IP simple Client Server connection

Question

I'm looking for a simple client-server connection in Lua. Due to bad online documentation I'm quite helpless. I found two threads here in stackoverflow but they didn't help much. Here is what I have so far:

Client:

local socket = require("socket")
local host, port = "192.168.100.47", 51515
local tcp = assert(socket.tcp())
tcp:connect(host, port);
tcp:send("hello world\n");
while true do
    local s, status, partial = tcp:receive()
    print(s or partial)
    if status == "closed" then
      break
    end
end
tcp:close()

Server:

local socket = require("socket")
local server = assert(socket.bind("*", 51515))
local tcp = assert(socket.tcp())
print(socket._VERSION)
print(tcp)
while 1 do
  local client = server:accept()
  line = client:receive()
  client:send("it works\n")
end

Solution

Here is a working client/server example, which is based on luasocket documentation and SO answers. If you have issues with getting it to work, you need to provide specific details about those issues.

Comments

[Paul Kulchenko]

What's your question?

[Speedbird]

I want to communicate between this two servers but I don't know how it works and I also can't find much in the internet. So the question is: how to write a simple TCP server and client with LUA?

[Paul Kulchenko]

What's the problem with the example you already have?