TCP connections to X server

In modern times, the X server doesn't listen on TCP by default. A user typically can't elect to turn it on, but socat can:

socat TCP-LISTEN:6000,fork,reuseaddr UNIX-CONNECT:/tmp/.X11-unix/X0

How to do stuff like copy your xauth information is left to the reader, who will need some good old fashioned incantations to do it.