- Already supports listening on as many sockets as you wish
- Each listening server has its own thread
- Will implement later: SSL server
Also refactored code a bit, created the generic "Controller" class, made
EXMgr and SrvMgr inherit from it.
ToDo: Figure out workflow for connections and clients, model client
sessions, etc.
- Only send server.ping on idle >1min (previously we sent
unconditionally once a minute)
- Added __attrubute__ format stuff to the printf-like log functions
- Small nit
We weren't exactly thread safe. Fixed to not touch socket from main
thread. Also documented what should be called from which thread.
Hopefully we are solid now.
