http://hc.apache.org/httpcomponents-client: Apache HttpComponents Client (The Apache Software Foundation)
  • Julius Davies
  • Andrea Selva
  • Steffen Pingel
  • Quintin Beukes
  • Marc Beyerle
  • James Abley
  • Michajlo Matijkiw 
/*
 * ====================================================================
 * 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 org.apache.http.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
/**
 * 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.

Params:
  • host – 
           The host name to be resolved by this resolver.
See Also:
  • InetAddress
Returns:The IP address associated to the given host name, or null if the
        host name is not known by the implementation class.
/**
     * 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;

}