- TCP_Session
	* library for end-user

- ccs_manager
	* thread launched by tcp_session initialization

- ccs_mgr_data
	* structures and functions used by ccs_manager

- interproto
	* structures and functions for ccs communication between
	  two ccs_manager threads over the network

- main_data
	* structures and functions used by tcp_session functions

- main_mgr_proto
	* structures and functions for communication between
	  ccs functions called by application and ccs_manager

