MIT License

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

Arduino core for the ESP32(LGPL)
Copyright（C）2015-2019 EspressifSystems

Base 64 Arduino Library(LGPL)
Copyright (C) 2016 Arturo Guadalupi. All right reserved.

PubSubClient(MIT)
Arduino Client for MQTT
Copyright (c) 2008-2020 Nicholas O'Leary

ArduinoJson-5.x(MIT)
ArduinoJson is a C++ JSON library for Arduino and IoT (Internet Of Things).
Copyright © 2014-2019 Benoit BLANCHON

AsyncTCP(LGPL)
Asynchronous TCP library for Espressif MCUs
Copyright (c) 2016 Hristo Gochkov. All rights reserved.

ESPAsyncWebServer(LGPL)
Asynchronous WebServer library for Espressif MCUs
Copyright (c) 2016 Hristo Gochkov. All rights reserved.