/*
* Copyright 2012 Future Systems
*
* Licensed 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 org.krakenapps.dns.rr;
import java.nio.ByteBuffer;
import org.krakenapps.dns.DnsLabelCodec;
import org.krakenapps.dns.DnsResourceRecord;
/**
* {@link http://tools.ietf.org/html/rfc1035#page-17}
*
* @author xeraph
*
*/
public class MX extends DnsResourceRecord {
private int preference;
/**
* {@link http://tools.ietf.org/html/rfc974}
*/
private String exchange;
public static DnsResourceRecord decode(ByteBuffer bb, boolean isQuestion) {
MX mx = new MX();
if (isQuestion)
return mx;
// skip rdlen
bb.getShort();
mx.preference = bb.getShort() & 0xffff;
mx.exchange = DnsLabelCodec.decode(bb);
return mx;
}
@Override
public void encode(ByteBuffer bb) {
ByteBuffer rdata = ByteBuffer.allocate(65535);
rdata.putShort((short) preference);
DnsLabelCodec.encode(rdata, exchange);
rdata.flip();
bb.putShort((short) rdata.limit());
bb.put(rdata);
}
public int getPreference() {
return preference;
}
public void setPreference(int preference) {
this.preference = preference;
}
public String getExchange() {
return exchange;
}
public void setExchange(String exchange) {
this.exchange = exchange;
}
@Override
public String toString() {
return "MX " + preference + " " + exchange;
}
}