Per https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_servers, it looks like we can implement an HTTP server alike. This setup intends to explore how easy it is to implement a very barebone HTTP handler (without ASP.Net Core that is!).
As it turns out, getting started is very easy.
https://learn.microsoft.com/en-us/dotnet/api/system.net.sockets.tcplistener?view=net-8.0