DnsQueryContext.java — netty Source File

Source Code

/*
 * Copyright 2014 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.bootstrap.Bootstrap;
import io.netty.channel.AddressedEnvelope;
import io.netty.channel.Channel;
import io.netty.channel.ChannelFuture;
import io.netty.channel.ChannelFutureListener;
import io.netty.channel.ChannelHandlerContext;
import io.netty.channel.ChannelInboundHandlerAdapter;
import io.netty.channel.ChannelPromise;
import io.netty.handler.codec.dns.AbstractDnsOptPseudoRrRecord;
import io.netty.handler.codec.dns.DnsQuery;
import io.netty.handler.codec.dns.DnsQuestion;
import io.netty.handler.codec.dns.DnsRecord;
import io.netty.handler.codec.dns.DnsRecordType;
import io.netty.handler.codec.dns.DnsResponse;
import io.netty.handler.codec.dns.DnsSection;
import io.netty.handler.codec.dns.TcpDnsQueryEncoder;
import io.netty.handler.codec.dns.TcpDnsResponseDecoder;
import io.netty.util.ReferenceCountUtil;
import io.netty.util.concurrent.Future;
import io.netty.util.concurrent.FutureListener;
import io.netty.util.concurrent.Promise;
import io.netty.util.internal.SystemPropertyUtil;
import io.netty.util.internal.ThrowableUtil;
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.concurrent.CancellationException;
import java.util.concurrent.TimeUnit;

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

abstract class DnsQueryContext {

    private static final InternalLogger logger = InternalLoggerFactory.getInstance(DnsQueryContext.class);
    private static final long ID_REUSE_ON_TIMEOUT_DELAY_MILLIS;

    static {
        ID_REUSE_ON_TIMEOUT_DELAY_MILLIS =
                SystemPropertyUtil.getLong("io.netty.resolver.dns.idReuseOnTimeoutDelayMillis", 10000);
        logger.debug("-Dio.netty.resolver.dns.idReuseOnTimeoutDelayMillis: {}", ID_REUSE_ON_TIMEOUT_DELAY_MILLIS);
    }
// ... (490 more lines)