Fixed unit test.
Added event notification for server connections.
Check for transport connection.
Added Callback annotation to the IDL parser.
Started implementing callback feature.
Extended information about server connection.
Added unit test for TransportAddress class.
Added support for special arguments (e.g. ServerConnection) to the server RPC handlers.
Added ServiceConnection interface.
Simplified Protocol interface and other code.
First working version of the callback test.
Implementing callback calls.
More work on callbacks.
Fixed multithreading issue on server.
Started simplifying code.
More code simplifications.
More simplifications.
Added Message.getRequestMessage() method, additional refactoring.
Started simplified TransportConnection API.
Continued simplified TransportConnection API.