DnsNameResolverBuilder.java — netty Source File

Source Code

/*
 * Copyright 2015 The Netty Project
 *
 * The Netty Project 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:
 *
 *   https://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 io.netty.resolver.dns;

import io.netty.channel.ChannelFactory;
import io.netty.channel.EventLoop;
import io.netty.channel.ReflectiveChannelFactory;
import io.netty.channel.socket.DatagramChannel;
import io.netty.channel.socket.InternetProtocolFamily;
import io.netty.channel.socket.SocketChannel;
import io.netty.channel.socket.SocketProtocolFamily;
import io.netty.resolver.HostsFileEntriesResolver;
import io.netty.resolver.ResolvedAddressTypes;
import io.netty.util.concurrent.Future;
import io.netty.util.internal.EmptyArrays;
import io.netty.util.internal.ObjectUtil;
import io.netty.util.internal.logging.InternalLogger;
import io.netty.util.internal.logging.InternalLoggerFactory;

import java.net.InetSocketAddress;
import java.net.SocketAddress;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

import static io.netty.util.internal.ObjectUtil.checkNotNull;
import static io.netty.util.internal.ObjectUtil.intValue;

/**
 * A {@link DnsNameResolver} builder.
 */
public final class DnsNameResolverBuilder {

    private static final InternalLogger logger = InternalLoggerFactory.getInstance(DnsNameResolverBuilder.class);
    static final SocketAddress DEFAULT_LOCAL_ADDRESS = new InetSocketAddress(0);

    volatile EventLoop eventLoop;
    private ChannelFactory<? extends DatagramChannel> datagramChannelFactory;
    private ChannelFactory<? extends SocketChannel> socketChannelFactory;
    private boolean retryOnTimeout;

    private DnsCache resolveCache;
    private DnsCnameCache cnameCache;
    private AuthoritativeDnsServerCache authoritativeDnsServerCache;
    private SocketAddress localAddress = DEFAULT_LOCAL_ADDRESS;
    private Integer minTtl;
    private Integer maxTtl;
// ... (730 more lines)