Package org.eblocker.server.common.network

Class IpResponseTable

java.lang.Object

org.eblocker.server.common.network.IpResponseTable

public class IpResponseTable
extends Object

This table stores the last time a hardware address has responded to a specific IP address (via ARP response or Neighbor Advertisement). Listeners can be notified if the latest timestamp for a specific hardware address has been updated. They are not notified more frequently than once per minute.

Nested Class Summary

Nested Classes

Modifier and Type	Class	Description
static interface	IpResponseTable.LatestTimestampUpdateListener

Constructor Summary

Constructors

Constructor	Description
IpResponseTable()

Method Summary

Modifier and Type	Method	Description
Set<IpAddress>	activeAddressesSince(String hardwareAddress, long millis)	Returns all IP addresses of a given hardware address that have been active since a given timestamp.
boolean	activeSince(String hardwareAddress, long millis)
void	addLatestTimestampUpdateListener(IpResponseTable.LatestTimestampUpdateListener listener)
Set<String>	allActiveSince(long millis)	Collects all hardware addresses that have active IP addresses since a given timestamp
boolean	contains(String hardwareAddress, IpAddress ipAddress)
Long	get(String hardwareAddress, IpAddress ipAddress)
boolean	isEmpty()
Long	latestTimestamp(String hardwareAddress)
void	put(String hardwareAddress, IpAddress sourceAddress, long millis)
void	remove(String hardwareAddress)
void	removeAll(String hardwareAddress, Collection<IpAddress> ipAddresses)
String	toString()

Methods inherited from class java.lang.Object

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

Constructor Details

IpResponseTable

public IpResponseTable()

Method Details

get

public Long get(String hardwareAddress,
 IpAddress ipAddress)

isEmpty

public boolean isEmpty()

put

public void put(String hardwareAddress,
 IpAddress sourceAddress,
 long millis)

activeSince

public boolean activeSince(String hardwareAddress,
 long millis)

latestTimestamp

public Long latestTimestamp(String hardwareAddress)

allActiveSince

public Set<String> allActiveSince(long millis)

Collects all hardware addresses that have active IP addresses since a given timestamp

Parameters:

millis - timestamp

Returns:

set of active hardware addresses

activeAddressesSince

public Set<IpAddress> activeAddressesSince(String hardwareAddress,
 long millis)

Returns all IP addresses of a given hardware address that have been active since a given timestamp.

Parameters:

hardwareAddress -

millis - timestamp

Returns:

set of active IP addresses or null if the hardware address does not exist.

removeAll

public void removeAll(String hardwareAddress,
 Collection<IpAddress> ipAddresses)

contains

public boolean contains(String hardwareAddress,
 IpAddress ipAddress)

remove

public void remove(String hardwareAddress)

toString

public String toString()

Overrides:

toString in class Object

addLatestTimestampUpdateListener

public void addLatestTimestampUpdateListener(IpResponseTable.LatestTimestampUpdateListener listener)