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/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*
*/
package ch.boye.httpclientandroidlib.conn;
import java.net.InetAddress;
import java.net.UnknownHostException;
/**
* Users may implement this interface to override the normal DNS lookup offered
* by the OS.
*
* @since 4.2
*/
public interface DnsResolver {
/**
* 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.
*
* @see InetAddress
*
* @param host
* The host name to be resolved by this resolver.
* @return The IP address associated to the given host name, or null if the
* host name is not known by the implementation class.
*/
InetAddress[] resolve(String host) throws UnknownHostException;
}
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