mil.navy.nps.bridge
Class MulticastTunnelServer

java.lang.Object
  mil.navy.nps.bridge.MulticastTunnelServer

public class MulticastTunnelServer

extends java.lang.Object

Nested Class Summary

(package private) class

MulticastTunnelServer.Reaper An inner class that implements the Runnable interface.

Field Summary

(package private) java.util.HashSet	channels
(package private) java.util.HashSet	clients
(package private) java.net.DatagramSocket	serverSocket

Method Summary

protected void	connect(java.lang.String pConnectCommand) Handles connect commands.
protected void	disconnect(java.net.InetAddress pClientAddress, int pClientPort) Removes the client from all channels.
static MulticastTunnelServer	getInstance(int pPort) implementation of the singleton pattern.
protected void	keepAlive(java.net.InetAddress pClientAddress, int pPort) Handles the keepAlive server command.
static void	main(java.lang.String[] args) Main entry point.
void	removeChannel(Channel pChannel) removeChannel.
void	run() Implementation of the Runnable interface.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

clients

java.util.HashSet clients

channels

java.util.HashSet channels

serverSocket

java.net.DatagramSocket serverSocket

Method Detail

getInstance

public static MulticastTunnelServer getInstance(int pPort)

implementation of the singleton pattern. Uses a private constructor to build a single instance of MulticastTunnelServer.

run

public void run()

Implementation of the Runnable interface. This listens for commands and forwards them to the appropriate handler. It also kicks of a "reaper" thread that handles the keepAlive timeout housekeeping.

connect

protected void connect(java.lang.String pConnectCommand)

Handles connect commands. Connect commands are of the form connect clientMachineAddress clientMachinePort multicastAddress multicastPort We parse this out via a tokenizer, which just takes the items one by one. Note that the command string should be followed by a space, or the parser will be unable to tell when the command quits and when gibberish at the end of the packet begins.

disconnect

protected void disconnect(java.net.InetAddress pClientAddress,
                          int pClientPort)

Removes the client from all channels.

removeChannel

public void removeChannel(Channel pChannel)

removeChannel. This should not be called unless you're certain that all clients have been removed first.

keepAlive

protected void keepAlive(java.net.InetAddress pClientAddress,
                         int pPort)

Handles the keepAlive server command. Updates the timestamp on the client so the reaper process doesn't close it down.

main

public static void main(java.lang.String[] args)

Main entry point.