Arduino WebSocket Server Using an ESP32 @HUZZAH32 Feather Board @arduino @shawnhymel
https://blog.adafruit.com/2018/11/01/arduino-websocket-server-using-an-esp32-huzzah32-feather-board-arduino-shawnhymel/
_WebSockets is an incredibly useful protocol that lets you send data to and from a server over TCP without the need for HTTP. Importantly, it lets you push data from the server to a client (e.g. a browser) without needing to make a request. This can be very handy for things like browser-based multiplayer games. I wanted to play around with it for embedded systems to see if I could get low-latency communication between a microcontroller and a computer. Specifically, I wanted the microcontroller to act as a server that supported a connection from a browser (e.g. PC or phone)._