/*
* 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:
*
* 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 io.netty.buffer.ByteBuf;
import io.netty.util.internal.UnstableApi;
/**
* Decodes a DNS record into its object representation.
*
* @see DatagramDnsResponseDecoder
*/
@UnstableApi
public interface DnsRecordDecoder {
DnsRecordDecoder DEFAULT = new DefaultDnsRecordDecoder();
/**
* Decodes a DNS question into its object representation.
*
* @param in the input buffer which contains a DNS question at its reader index
*/
DnsQuestion decodeQuestion(ByteBuf in) throws Exception;
/**
* Decodes a DNS record into its object representation.
*
* @param in the input buffer which contains a DNS record at its reader index
*
* @return the decoded record, or {@code null} if there are not enough data in the input buffer
*/
<T extends DnsRecord> T decodeRecord(ByteBuf in) throws Exception;
}