org.apache.hc.client5.http

Interface DnsResolver

All Known Implementing Classes:

InMemoryDnsResolver, SystemDefaultDnsResolver

public interface DnsResolver

Users may implement this interface to override the normal DNS lookup offered by the OS.

Since:

4.2

Method Summary

Modifier and Type	Method and Description
java.net.InetAddress[]	resolve(java.lang.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.
java.lang.String	resolveCanonicalHostname(java.lang.String host) Gets the fully qualified domain name for given host name.

Method Detail

resolve

java.net.InetAddress[] resolve(java.lang.String host)
                        throws java.net.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.

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:

java.net.UnknownHostException

See Also:

InetAddress

resolveCanonicalHostname

java.lang.String resolveCanonicalHostname(java.lang.String host)
                                   throws java.net.UnknownHostException

Gets the fully qualified domain name for given host name.

Throws:

java.net.UnknownHostException

Since:

5.0