com.limegroup.gnutella.dht
Class ActiveDHTNodeController

java.lang.Object
  com.limegroup.gnutella.dht.AbstractDHTController
      com.limegroup.gnutella.dht.ActiveDHTNodeController

All Implemented Interfaces:

DHTController

public class ActiveDHTNodeController
extends AbstractDHTController

Controls an active DHT node.

Active nodes load and persist DHT data, as they keep the same node ID over multiple sessions and can therefore re-use their local routing table and local database.

Field Summary

Fields inherited from class com.limegroup.gnutella.dht.AbstractDHTController

bootstrapper, dht, LOG

Method Summary

protected MojitoDHT	createMojitoDHT(Vendor vendor, Version version) A factory method to create MojitoDHTs
List<IpPort>	getActiveDHTNodes(int maxNodes) Returns maxNodes number of active Node IP:Ports
void	handleConnectionLifecycleEvent(ConnectionLifecycleEvent evt) A callback method to notify the DHTController about ConnectionLifecycleEvents
void	stop() Shuts down the DHT.

Methods inherited from class com.limegroup.gnutella.dht.AbstractDHTController

addActiveDHTNode, addActiveDHTNode, addContact, addPassiveDHTNode, getDHTMode, getMojitoDHT, getMRSNodes, getRouteTableVersion, isBootstrapped, isRunning, isWaitingForNodes, sendUpdatedCapabilities, start

Methods inherited from class java.lang.Object

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

Method Detail

createMojitoDHT

protected MojitoDHT createMojitoDHT(Vendor vendor,
                                    Version version)

Description copied from class: AbstractDHTController

A factory method to create MojitoDHTs

Specified by:

createMojitoDHT in class AbstractDHTController

stop

public void stop()

Description copied from class: AbstractDHTController

Shuts down the DHT. If this is an active node, it sends the updated capabilities to its ultrapeers and stores the node's route table to a file (active.mojito). Otherwise, as a passive node, it saves a list of Most Recently Seen (MRS) nodes to bootstrap for the next session as long as there was at least two Contacts in the route table.

The persisted route table (stored contacts from the last session) is used as a secondary means to bootstrap, if the node didn't receive any hosts through the Gnutella network to bootstrap.

Specified by:

stop in interface DHTController

Overrides:

stop in class AbstractDHTController

handleConnectionLifecycleEvent

public void handleConnectionLifecycleEvent(ConnectionLifecycleEvent evt)

Description copied from interface: DHTController

A callback method to notify the DHTController about ConnectionLifecycleEvents

Specified by:

handleConnectionLifecycleEvent in interface DHTController

Overrides:

handleConnectionLifecycleEvent in class AbstractDHTController

getActiveDHTNodes

public List<IpPort> getActiveDHTNodes(int maxNodes)

Description copied from interface: DHTController

Returns maxNodes number of active Node IP:Ports

Specified by:

getActiveDHTNodes in interface DHTController

Overrides:

getActiveDHTNodes in class AbstractDHTController