/*
 * Copyright (c) 2019-2020. Developed by Hedgecode.
 *
 * Licensed 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.
 */

package org.hedgecode.chess.scanner.proxy.client;

import java.net.InetAddress;
import java.net.UnknownHostException;
import java.util.HashMap;
import java.util.Map;

import org.apache.http.conn.DnsResolver;

/**
 * LocalDnsResolver
 *
 * @author Dmitry Samoshin aka gotty
 */
public class LocalDnsResolver implements DnsResolver {

    private static final String LOCALHOST = "localhost";
    private static final byte[] IP_ADDRESS = { 127, 0, 0, 1 };

    private final Map<String, byte[]> resolvers = new HashMap<String, byte[]>() {
        {
            put( LOCALHOST, IP_ADDRESS );
        }
    };

    @Override
    public InetAddress[] resolve(String host) throws UnknownHostException {
        return new InetAddress[] {
                InetAddress.getByAddress(
                        LOCALHOST, resolvers.get(LOCALHOST)
                )
        };
    }

}