Code written in YouTube video https://youtu.be/Tb3L4UcjlI4

init.lua

local function init_ws()
    require('ws32_client')
    .on('receive', function(data, ws)
        print('WS received: ', data)
    end)
    .on('connection', function(ws)
        print('WS connected')

        local timer = tmr.create()

        timer:register(2000, tmr.ALARM_AUTO, function(t)
            ws.send('Hello!')
        end)

        timer:start()
    end)
    .connect('ws://demos.kaazing.com:80/echo')
end

wifi.mode(wifi.STATION)

wifi.sta.config({
    ssid = "Renault 1.9D",
    pwd  = "renault19",
    auto = false
})

wifi.sta.on('got_ip', init_ws)

wifi.start()
wifi.sta.connect()