ESPAsyncWebServer

ESPAsyncWebServer is a lightweight HTTP server library for the ESP32 and ESP8266 microcontrollers. It is built on top of the AsyncTCP library and provides a simple and efficient way to create web servers that can handle multiple requests simultaneously.

Some of its key features include:

1. Asynchronous handling of requests: ESPAsyncWebServer can handle multiple requests simultaneously without blocking the main loop of the program.

2. Support for WebSocket: It provides a simple API for creating WebSocket servers and clients.

3. Easy to use: ESPAsyncWebServer has a simple and intuitive API that makes it easy to create web servers and handle requests.

4. Multiple content types: It supports serving various types of content, including HTML, CSS, JavaScript, and images.

5. Flexible routing: It allows you to define routes based on URL patterns and HTTP methods.

6. Authentication and authorization: It supports basic and digest authentication and allows you to define custom authorization handlers.

Overall, ESPAsyncWebServer is an excellent choice for creating web servers on ESP32 and ESP8266 microcontrollers. Its lightweight and efficient design make it ideal for resource-constrained applications.