org.onlab.packet.IP Maven / Gradle / Ivy
/*
* Copyright 2016-present Open Networking Foundation
*
* 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.onlab.packet;
import java.nio.ByteBuffer;
/**
* Implements IP packet format.
*/
public abstract class IP extends BasePacket {
/**
* Gets IP version number.
*
* @return IP version number
*/
public abstract byte getVersion();
/**
* Sets IP version number.
*
* @param version the version to set
* @return IP class
*/
public abstract IP setVersion(final byte version);
/**
* Deserializer function for IP packets.
*
* @return deserializer function
*/
public static Deserializer deserializer() {
return (data, offset, length) -> {
final ByteBuffer bb = ByteBuffer.wrap(data, offset, length);
byte version = (byte) (bb.get() >> 4 & 0xf);
switch (version) {
case 4:
return IPv4.deserializer().deserialize(data, offset, length);
case 6:
return IPv6.deserializer().deserialize(data, offset, length);
default:
throw new DeserializationException("Invalid IP version");
}
};
}
}