Inherited UNIX Sock File Descriptor Ownership

I am currently trying to write a small client to wayland to get a feel for ipc in rust and window management on linux however I'm getting stuck on step one which is to get an open unix socket to the wayland process. The book I'm reading (https://wayland-book.com) indicates that the process is essentially a couple heuristic, best-effort, attempts: If WAYLAND_SOCKET is set, interpret it as a file descriptor number on which the connection is already established, assuming that the parent process c...