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/*
 * Copyright 2016 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:
 *
 *   http://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;

import io.netty.util.internal.StringUtil;
import io.netty.util.internal.UnstableApi;

@UnstableApi
public class DefaultDnsPtrRecord extends AbstractDnsRecord implements DnsPtrRecord {

    private final String hostname;

    /**
     * Creates a new PTR record.
     *
     * @param name the domain name
     * @param dnsClass the class of the record, usually one of the following:
     *                 
    *
  • {@link #CLASS_IN}
  • *
  • {@link #CLASS_CSNET}
  • *
  • {@link #CLASS_CHAOS}
  • *
  • {@link #CLASS_HESIOD}
  • *
  • {@link #CLASS_NONE}
  • *
  • {@link #CLASS_ANY}
  • *
* @param timeToLive the TTL value of the record * @param hostname the hostname this PTR record resolves to. */ public DefaultDnsPtrRecord( String name, int dnsClass, long timeToLive, String hostname) { super(name, DnsRecordType.PTR, dnsClass, timeToLive); this.hostname = checkNotNull(hostname, "hostname"); } @Override public String hostname() { return hostname; } @Override public String toString() { final StringBuilder buf = new StringBuilder(64).append(StringUtil.simpleClassName(this)).append('('); final DnsRecordType type = type(); buf.append(name().isEmpty()? "" : name()) .append(' ') .append(timeToLive()) .append(' '); DnsMessageUtil.appendRecordClass(buf, dnsClass()) .append(' ') .append(type.name()); buf.append(' ') .append(hostname); return buf.toString(); } }




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