The server uses karlsequin's http and websocket library. You can find more info for them here: https://github.com/karlseguin/http.zig and here: https://github.com/karlseguin/websocket.zig.
This is a very basic HTTP and Websocket server system. HTTPZ takes care of all routing. Some useful filesystem helpers like readFile() make it easy to read html files dynamically and there is an example of a comptime embedded html file in http.zig
Simply clone the project onto your local machine:
git clone https://github.com/ipinzi/ZigWebsocketHTTPServer.git
You can then build and run the Zig project like so:
zig build run