Some of the things that you can learn from reading this were: - More than one program can listen to the same port on the same IP address, depending on how thin

Some of the things that you can learn from reading this were: - More than one program can listen to the same port on the same IP address, depending on how things are initialised - Multiple IP's can be listened to for the same port - TCP and UDP ports are separate, so even without allowing port re-use you can have two processes listen to the same port And lots more! For me, this was a really engaging way to learn the nuances of how the concepts of processes, ports, protocols, sockets and IP addresses relate to each other. Perhaps the format isn't ideal for everyone. Also, I have probably learned all of these concepts before, so maybe that helps. Anyway, I bookmarked this for the next time I forget it and need to learn it again :D edit: formatting