org.jnetpcap.util.resolver
Class IpResolver

java.lang.Object
  org.jnetpcap.util.resolver.AbstractResolver
      org.jnetpcap.util.resolver.IpResolver

All Implemented Interfaces:

java.beans.PropertyChangeListener, java.util.EventListener, Resolver

public class IpResolver
extends AbstractResolver

A resolver object that knows how to convert IP addresses into hostnames.

Author:

Mark Bednarczyk, Sly Technologies, Inc.

Nested Class Summary

Nested classes/interfaces inherited from interface org.jnetpcap.util.resolver.Resolver

Resolver.ResolverType

Field Summary

Fields inherited from class org.jnetpcap.util.resolver.AbstractResolver

INFINITE_TIMEOUT, logger

Fields inherited from interface org.jnetpcap.util.resolver.Resolver

RESOLVER_SEARCH_PATH_PROPERTY

Constructor Summary

IpResolver()

Method Summary

java.lang.String	resolveToName(byte[] address, long hash) Resolves an address to a name.
protected java.lang.String	resolveToName(long number, long hash) Resolves number to a name.
long	toHashCode(byte[] address)

Methods inherited from class org.jnetpcap.util.resolver.AbstractResolver

addToCache, addToCache, canBeResolved, clearCache, finalize, getCacheCapacity, getCacheLoadFactor, getNegativeTimeout, getPositiveTimeout, hasCacheFile, initializeIfNeeded, isCached, loadCache, loadCache, loadCache, propertyChange, resolve, saveCache, saveCache, setCacheCapacity, setCacheLoadFactor, setNegativeTimeout, setPositiveTimeout, toHashCode, toString

Methods inherited from class java.lang.Object

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

Constructor Detail

IpResolver

public IpResolver()

Parameters:

type -

Method Detail

resolveToName

public java.lang.String resolveToName(byte[] address,
                                      long hash)

Description copied from class: AbstractResolver

Resolves an address to a name. Performs any neccessary lookups to try and resolve the name. The method should not access any of the cached information. THis method is called only after the cache has already been checked and failed to produce a positive or negative lookup entry.

Specified by:

resolveToName in class AbstractResolver

Parameters:

address - address to resolve

hash - computed hash code for the address, identifies the address uniquely

toHashCode

public long toHashCode(byte[] address)

Specified by:

toHashCode in class AbstractResolver

resolveToName

protected java.lang.String resolveToName(long number,
                                         long hash)

Description copied from class: AbstractResolver

Resolves number to a name. Performs any neccessary lookups to try and resolve the name. The method should not access any of the cached information. THis method is called only after the cache has already been checked and failed to produce a positive or negative lookup entry.

Specified by:

resolveToName in class AbstractResolver

Parameters:

number - a number value to resolve

hash - computed hash code for the number, identifies the number uniquely