org.apache.hc.client5.http.impl

Class InMemoryDnsResolver

java.lang.Object

org.apache.hc.client5.http.impl.InMemoryDnsResolver

All Implemented Interfaces:

DnsResolver

@Contract(threading=STATELESS)
public class InMemoryDnsResolver
extends Object
implements DnsResolver

In-memory DnsResolver implementation.

Since:

4.2

Constructor Summary

Constructors

Constructor and Description
InMemoryDnsResolver() Builds a DNS resolver that will resolve the host names against a collection held in-memory.

Method Summary

Modifier and Type	Method and Description
void	add(String host, InetAddress... ips) Associates the given array of IP addresses to the given host in this DNS overrider.
InetAddress[]	resolve(String host) Returns the IP address for the specified host name, or null if the given host is not recognized or the associated IP address cannot be used to build an InetAddress instance.
String	resolveCanonicalHostname(String host) Gets the fully qualified domain name for given host name.

Methods inherited from class java.lang.Object

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

Constructor Detail

InMemoryDnsResolver

public InMemoryDnsResolver()

Builds a DNS resolver that will resolve the host names against a collection held in-memory.

Method Detail

add

public void add(String host,
                InetAddress... ips)

Associates the given array of IP addresses to the given host in this DNS overrider. The IP addresses are assumed to be already resolved.

Parameters:

host - The host name to be associated with the given IP.

ips - array of IP addresses to be resolved by this DNS overrider to the given host name.

resolve

public InetAddress[] resolve(String host)
                      throws UnknownHostException

Returns the IP address for the specified host name, or null if the given host is not recognized or the associated IP address cannot be used to build an InetAddress instance.

Specified by:

resolve in interface DnsResolver

Parameters:

host - The host name to be resolved by this resolver.

Returns:

The IP address associated to the given host name, or null if the host name is not known by the implementation class.

Throws:

UnknownHostException

See Also:

InetAddress

resolveCanonicalHostname

public String resolveCanonicalHostname(String host)
                                throws UnknownHostException

Description copied from interface: DnsResolver

Gets the fully qualified domain name for given host name.

Specified by:

resolveCanonicalHostname in interface DnsResolver

Throws:

UnknownHostException