Java NIO and TCP Connections
Internal
Overview
This article describes the programming model involved in establishing a simple TCP connection and interacting with it with non-blocking I/O, from Java. We use Java NIO APIs primitives introduced in Java 4.
Programming Model
Server
The server code uses a Selector to multiplex over two selectable channels: a ServerSocketChannel that listens for incoming network connections and creates new SocketChannels for each new TCP connection.
The main event loop handles two types of events: new connections and data availability on the existing connections. Once a new connection is detected, the selector thread retrieves the corresponding SocketChannel and registers it with the same selector. If data becomes available on any of the registered SocketChannels, we use a Buffer to read it.
Client
