61 lines
2.2 KiB
Java
61 lines
2.2 KiB
Java
/*
|
|
* 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.channel.ChannelHandler;
|
|
import io.netty.channel.ChannelHandlerContext;
|
|
import io.netty.channel.socket.DatagramPacket;
|
|
import io.netty.handler.codec.MessageToMessageDecoder;
|
|
import io.netty.util.internal.UnstableApi;
|
|
|
|
import java.net.InetSocketAddress;
|
|
import java.util.List;
|
|
|
|
/**
|
|
* Decodes a {@link DatagramPacket} into a {@link DatagramDnsResponse}.
|
|
*/
|
|
@UnstableApi
|
|
@ChannelHandler.Sharable
|
|
public class DatagramDnsResponseDecoder extends MessageToMessageDecoder<DatagramPacket> {
|
|
|
|
private final DnsResponseDecoder<InetSocketAddress> responseDecoder;
|
|
|
|
/**
|
|
* Creates a new decoder with {@linkplain DnsRecordDecoder#DEFAULT the default record decoder}.
|
|
*/
|
|
public DatagramDnsResponseDecoder() {
|
|
this(DnsRecordDecoder.DEFAULT);
|
|
}
|
|
|
|
/**
|
|
* Creates a new decoder with the specified {@code recordDecoder}.
|
|
*/
|
|
public DatagramDnsResponseDecoder(DnsRecordDecoder recordDecoder) {
|
|
this.responseDecoder = new DnsResponseDecoder<InetSocketAddress>(recordDecoder) {
|
|
@Override
|
|
protected DnsResponse newResponse(InetSocketAddress sender, InetSocketAddress recipient,
|
|
int id, DnsOpCode opCode, DnsResponseCode responseCode) {
|
|
return new DatagramDnsResponse(sender, recipient, id, opCode, responseCode);
|
|
}
|
|
};
|
|
}
|
|
|
|
@Override
|
|
protected void decode(ChannelHandlerContext ctx, DatagramPacket packet, List<Object> out) throws Exception {
|
|
out.add(responseDecoder.decode(packet.sender(), packet.recipient(), packet.content()));
|
|
}
|
|
}
|