Update: Add socket functions and improve existing ones.

Update: Add socket functions and improve existing ones.

It is very clear to me that I had stopped working on the socket code.
Much of the code appears incomplete, including some comments that weren't updated after they were copy and pasted.

This is only preliminary work for only the functionality needed or preceived needed by the Controller program or other existing programs.
There will likely be major work in the future during the 0.7.x development release series.