DatagramDnsResponse.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 DnsResponse} implementation for UDP/IP.
 */
public class DatagramDnsResponse extends DefaultDnsResponse
        implements AddressedEnvelope<DatagramDnsResponse, InetSocketAddress> {

    private final InetSocketAddress sender;
    private final InetSocketAddress recipient;

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

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

    /**
     * Creates a new instance.
     *
     * @param sender the address of the sender
     * @param recipient the address of the recipient
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