org.pcap4j.packet.IpV6Pad1Option Maven / Gradle / Ivy
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The core module of Pcap4J.
/*_##########################################################################
_##
_## Copyright (C) 2012-2014 Pcap4J.org
_##
_##########################################################################
*/
package org.pcap4j.packet;
import java.io.ObjectStreamException;
import org.pcap4j.packet.IpV6ExtOptionsPacket.IpV6Option;
import org.pcap4j.packet.namednumber.IpV6OptionType;
import org.pcap4j.util.ByteArrays;
/**
* @author Kaito Yamada
* @since pcap4j 0.9.10
*/
public final class IpV6Pad1Option implements IpV6Option {
/*
* Pad1 option (alignment requirement: none)
*
* +-+-+-+-+-+-+-+-+
* | 0 |
* +-+-+-+-+-+-+-+-+
*/
/** */
private static final long serialVersionUID = 2182260121605325195L;
private static final IpV6Pad1Option INSTANCE = new IpV6Pad1Option();
private static final IpV6OptionType type = IpV6OptionType.getInstance((byte) 0);
private IpV6Pad1Option() {}
/** @return the singleton instance of IpV6Pad1Option. */
public static IpV6Pad1Option getInstance() {
return INSTANCE;
}
/**
* A static factory method. This method validates the arguments by {@link
* ByteArrays#validateBounds(byte[], int, int)}, which may throw exceptions undocumented here.
*
* @param rawData rawData
* @param offset offset
* @param length length
* @return the singleton instance of IpV6Pad1Option.
* @throws IllegalRawDataException if parsing the raw data fails.
*/
public static IpV6Pad1Option newInstance(byte[] rawData, int offset, int length)
throws IllegalRawDataException {
ByteArrays.validateBounds(rawData, offset, length);
if (rawData[offset] != type.value()) {
StringBuilder sb = new StringBuilder(100);
sb.append("The type must be: ")
.append(type.valueAsString())
.append(" rawData: ")
.append(ByteArrays.toHexString(rawData, " "));
throw new IllegalRawDataException(sb.toString());
}
return INSTANCE;
}
@Override
public IpV6OptionType getType() {
return type;
}
@Override
public int length() {
return 1;
}
@Override
public byte[] getRawData() {
return new byte[1];
}
@Override
public String toString() {
StringBuilder sb = new StringBuilder();
sb.append("[Option Type: ").append(type);
sb.append("]");
return sb.toString();
}
// Override deserializer to keep singleton
@SuppressWarnings("static-method")
private Object readResolve() throws ObjectStreamException {
return INSTANCE;
}
}
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