DatagramDnsQuery.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.handler.codec.dns;

import io.netty.channel.AddressedEnvelope;

import java.net.InetSocketAddress;
import java.net.SocketAddress;

/**
 * A {@link DnsQuery} implementation for UDP/IP.
 */
public class DatagramDnsQuery extends DefaultDnsQuery
        implements AddressedEnvelope<DatagramDnsQuery, InetSocketAddress> {

    private final InetSocketAddress sender;
    private final InetSocketAddress recipient;

    /**
     * Creates a new instance with the {@link DnsOpCode#QUERY} {@code opCode}.
     *
     * @param sender the address of the sender
     * @param recipient the address of the recipient
     * @param id the {@code ID} of the DNS query
     */
    public DatagramDnsQuery(
            InetSocketAddress sender, InetSocketAddress recipient, int id) {
        this(sender, recipient, id, DnsOpCode.QUERY);
    }

    /**
     * Creates a new instance.
     *
     * @param sender the address of the sender
     * @param recipient the address of the recipient
     * @param id the {@code ID} of the DNS query
     * @param opCode the {@code opCode} of the DNS query
     */
    public DatagramDnsQuery(
            InetSocketAddress sender, InetSocketAddress recipient, int id, DnsOpCode opCode) {
        super(id, opCode);

        if (recipient == null && sender == null) {
            throw new NullPointerException("recipient and sender");
        }

        this.sender = sender;
// ... (131 more lines)