Part III: Object Sockets
12: Java Socket API	DatagramIO.java	Datagram messenger
	SimpleEchoClient.java SimpleEchoServer.java	Client/server without I/O stream translation.
	EchoClient.java EchoServer.java	Client/server with I/O stream translation.
	ObjectReceiver.java ObjectSender.java	Sending and receiving objects.
	SimpleMulticastDestination.java SimpleMulticastSource.java	Simple multicast example.
	SimplePeerDestination.java SimplePeerSource.java	Simple datagram example.
	MessageGroupWindow.java MessageWindow.java	GUI-based datagram/multicast examples.
	ThreadedEchoServer.java	Threaded echo server.
	WindowChat.java	GUI-based socket (TCP) messenger.
	ErrorDialog.java	General GUI error display.
	IPv6Test.java	IPv6-support verifier.
13: C++ Socket Framework	socket.cpp socket.h	Entire C++ framework.
	echo-client.cpp echo-server.cpp	Echo client/server example.
	broadcast-peer.cpp multicast-peer.cpp	Broadcast/multicast examples.
	peer-caller.cpp peer-replier.cpp	Dual program example for datagrams.
	peer.cpp	Peer-to-peer datagram example.