How to open a web socket with Lua scripting language?

Question

As a beginner, I want to open a web socket with Lua on a Linux-based server. This server should allow Android client to connect to it. Can you please give me some example code of opening web socket with Lua?

Answer 1

You already asked the same question two weeks ago that was answered: LUA Script - web socket communication. Have you looked at lua-websockets? What have you tried? What's not working?

Examples from the websockets module I referenced earlier:

-- create client:

local websocket = require'websocket'
local client = websocket.client.copas({timeout=2})

-- connect to the server:

local ok,err = client:connect('ws://localhost:12345','echo')
if not ok then
   print('could not connect',err)
end

-- send data:

local ok = client:send('hello')
if ok then
   print('msg sent')
else
   print('connection closed')
end

-- receive data:

local message,opcode = client:receive()
if message then
   print('msg',message,opcode)
else
   print('connection closed')
end

-- close connection:

local close_was_clean,close_code,close_reason = client:close(4001,'lost interest')

Have you tried them? Ran into issues?