Class SimpleGnutellaServer

java.lang.Object
  SimpleGnutellaServer

All Implemented Interfaces:

EventHandlerIF

public class SimpleGnutellaServer
extends java.lang.Object
implements EventHandlerIF

This is a simple Gnutella server implemented using the Sandstorm Gnutella library. It correctly implements packet routing. It does not respond to queries or host any shared files itself; it simply routes packets to other hosts on the network.

Nested Class Summary

(package private) class

SimpleGnutellaServer.timerEvent Small internal class to represent a timer event.

Field Summary

private static boolean	ACCEPT_CONNECTIONS
private static int	CATCHER_CONNECTIONS
private static int	CLEAN_TIMER_FREQUENCY
private static boolean	DEBUG
private static boolean	DO_CATCHER
private static boolean	DO_CLEANER
private GnutellaServer	gs
private ManagerIF	mgr
private static int	MIN_CONNECTIONS
private java.lang.String	myName
private SinkIF	mySink
private int	num_connections
private static int	NUM_FILES
private static int	NUM_KB
private java.util.Hashtable	packetTable
private static boolean	ROUTE_PACKETS
private static boolean	SEND_PONGS
private static java.lang.String	SERVER_HOSTNAME
private ssTimer	timer
private static boolean	VERBOSE

Constructor Summary

SimpleGnutellaServer()

Method Summary

void	destroy() Called when an event handler is destroyed.
private void	doCatcher()
private void	doClean(SimpleGnutellaServer.timerEvent ev)
private void	doTimer(SimpleGnutellaServer.timerEvent ev)
private void	forwardPacket(GnutellaPacket pkt)
private void	forwardPacketToAll(GnutellaPacket pkt)
void	handleEvent(QueueElementIF item) The main event handling code.
void	handleEvents(QueueElementIF[] items) Handle the events corresponding to the given QueueElementIF array.
void	init(ConfigDataIF config) Called when an event handler is initialized.
private boolean	rememberPacket(GnutellaPacket pkt)

Methods inherited from class java.lang.Object

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

Field Detail

DEBUG

private static final boolean DEBUG

See Also:

Constant Field Values

VERBOSE

private static final boolean VERBOSE

See Also:

Constant Field Values

DO_CLEANER

private static boolean DO_CLEANER

ACCEPT_CONNECTIONS

private static boolean ACCEPT_CONNECTIONS

SEND_PONGS

private static boolean SEND_PONGS

ROUTE_PACKETS

private static boolean ROUTE_PACKETS

CLEAN_TIMER_FREQUENCY

private static final int CLEAN_TIMER_FREQUENCY

See Also:

Constant Field Values

SERVER_HOSTNAME

private static java.lang.String SERVER_HOSTNAME

DO_CATCHER

private static boolean DO_CATCHER

CATCHER_CONNECTIONS

private static int CATCHER_CONNECTIONS

MIN_CONNECTIONS

private static final int MIN_CONNECTIONS

See Also:

Constant Field Values

NUM_FILES

private static final int NUM_FILES

See Also:

Constant Field Values

NUM_KB

private static final int NUM_KB

See Also:

Constant Field Values

mgr

private ManagerIF mgr

myName

private java.lang.String myName

mySink

private SinkIF mySink

timer

private ssTimer timer

gs

private GnutellaServer gs

packetTable

private java.util.Hashtable packetTable

num_connections

private int num_connections

Constructor Detail

SimpleGnutellaServer

public SimpleGnutellaServer()

Method Detail

init

public void init(ConfigDataIF config)
          throws java.lang.Exception

Description copied from interface: EventHandlerIF

Called when an event handler is initialized. This method should perform any initialization operations as required by the application.

Specified by:

init in interface EventHandlerIF

Parameters:

config - The set of configuration parameters for the stage.

Throws:

java.lang.Exception - The EventHandler can indicate an error to the runtime during initialization by throwing an Exception.

destroy

public void destroy()

Description copied from interface: EventHandlerIF

Called when an event handler is destroyed. This method should perform any cleanup or shutdown operations as required by the application before the event handler is removed from the system.

Specified by:

destroy in interface EventHandlerIF

doCatcher

private void doCatcher()

forwardPacketToAll

private void forwardPacketToAll(GnutellaPacket pkt)

forwardPacket

private void forwardPacket(GnutellaPacket pkt)

rememberPacket

private boolean rememberPacket(GnutellaPacket pkt)

handleEvent

public void handleEvent(QueueElementIF item)

The main event handling code.

Specified by:

handleEvent in interface EventHandlerIF

handleEvents

public void handleEvents(QueueElementIF[] items)

Description copied from interface: EventHandlerIF

Handle the events corresponding to the given QueueElementIF array. This method is invoked when multiple events are pending for the event handler. The application may reorder, filter, or drop these events if it wishes to do so.

Specified by:

handleEvents in interface EventHandlerIF

doClean

private void doClean(SimpleGnutellaServer.timerEvent ev)

doTimer

private void doTimer(SimpleGnutellaServer.timerEvent ev)