Reator to web interface

os.loadAPI("json")
local ws, err = http.websocket("ws://5ffb03dfaa0d.ngrok.io/")

if err then
    print(err)
end
if ws then
    print("> CONNECTED")
    while true do
        local message = ws.receive()
        print(message)
        local obj = json.decode(message)
        if obj.type == 'eval' then
            local func = loadstring(obj['function'])
            local result = func()
            ws.send(json.encode(result))
            print("> EVAL " .. tostring(result))
        end
    end
end