Build the web server

In order to build the web server we will be using the ESPAsyncWebServer library that is perfect for building an Asynchronous web server.

Install ESPAsyncWebServer library

We need to install it manually by following the steps below:

1. Download the zip folder of the ESPAsyncWebServer library

2. Unzip the folder.

3. Rename your folder from ESPAsyncWebServer-master to ESPAsyncWebServer

4. Move the ESPAsyncWebServer folder to your Arduino IDE installation libraries folder

Installing the ESPAsync TCP Library

1. Download the zip file with the ESPAsyncTCP Library

2. Unzip the folder

3. Rename your folder from ESPAsyncTCP-master to ESPAsyncTCP

4. Move the ESPAsyncTCP folder to your Arduino IDE installation libraries folder

5. Finally, re-open your Arduino IDE.