public class DNSJavaNameService
extends java.lang.Object
implements sun.net.spi.nameservice.NameService
This Name Service Provider uses dnsjava.
To use this provider, you must set the following system property: sun.net.spi.nameservice.provider.1=dns,dnsjava
Modifier and Type | Field and Description |
---|---|
private boolean |
addressesLoaded |
private static java.lang.String |
domainProperty |
private java.net.InetAddress[] |
localhostAddresses |
private Name |
localhostName |
private java.net.InetAddress[] |
localhostNamedAddresses |
private static java.lang.String |
nsProperty |
private boolean |
preferV6 |
private static java.lang.String |
v6Property |
Modifier | Constructor and Description |
---|---|
protected |
DNSJavaNameService()
Creates a DNSJavaNameService instance.
|
Modifier and Type | Method and Description |
---|---|
java.lang.String |
getHostByAddr(byte[] addr)
Performs a reverse DNS lookup.
|
java.net.InetAddress[] |
lookupAllHostAddr(java.lang.String host)
Performs a forward DNS lookup for the host name.
|
private static final java.lang.String nsProperty
private static final java.lang.String domainProperty
private static final java.lang.String v6Property
private boolean preferV6
private Name localhostName
private java.net.InetAddress[] localhostNamedAddresses
private java.net.InetAddress[] localhostAddresses
private boolean addressesLoaded
protected DNSJavaNameService()
Uses the sun.net.spi.nameservice.nameservers, sun.net.spi.nameservice.domain, and java.net.preferIPv6Addresses properties for configuration.
public java.net.InetAddress[] lookupAllHostAddr(java.lang.String host) throws java.net.UnknownHostException
lookupAllHostAddr
in interface sun.net.spi.nameservice.NameService
host
- The host name to resolve.java.net.UnknownHostException
public java.lang.String getHostByAddr(byte[] addr) throws java.net.UnknownHostException
getHostByAddr
in interface sun.net.spi.nameservice.NameService
addr
- The ip address to lookup.java.net.UnknownHostException