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

/**
 * The DNS {@code RCODE}, as defined in <a href="https://tools.ietf.org/html/rfc2929">RFC2929</a>.
 */
public class DnsResponseCode implements Comparable<DnsResponseCode> {

    /**
     * The 'NoError' DNS RCODE (0), as defined in <a href="https://tools.ietf.org/html/rfc1035">RFC1035</a>.
     */
    public static final DnsResponseCode NOERROR = new DnsResponseCode(0, "NoError");

    /**
     * The 'FormErr' DNS RCODE (1), as defined in <a href="https://tools.ietf.org/html/rfc1035">RFC1035</a>.
     */
    public static final DnsResponseCode FORMERR = new DnsResponseCode(1, "FormErr");

    /**
     * The 'ServFail' DNS RCODE (2), as defined in <a href="https://tools.ietf.org/html/rfc1035">RFC1035</a>.
     */
    public static final DnsResponseCode SERVFAIL = new DnsResponseCode(2, "ServFail");

    /**
     * The 'NXDomain' DNS RCODE (3), as defined in <a href="https://tools.ietf.org/html/rfc1035">RFC1035</a>.
     */
    public static final DnsResponseCode NXDOMAIN = new DnsResponseCode(3, "NXDomain");

    /**
     * The 'NotImp' DNS RCODE (4), as defined in <a href="https://tools.ietf.org/html/rfc1035">RFC1035</a>.
     */
    public static final DnsResponseCode NOTIMP = new DnsResponseCode(4, "NotImp");

    /**
     * The 'Refused' DNS RCODE (5), as defined in <a href="https://tools.ietf.org/html/rfc1035">RFC1035</a>.
     */
    public static final DnsResponseCode REFUSED = new DnsResponseCode(5, "Refused");

    /**
     * The 'YXDomain' DNS RCODE (6), as defined in <a href="https://tools.ietf.org/html/rfc2136">RFC2136</a>.
     */
    public static final DnsResponseCode YXDOMAIN = new DnsResponseCode(6, "YXDomain");

    /**
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