Package org.pcap4j.packet

Class IpV4Packet.IpV4Header

java.lang.Object

org.pcap4j.packet.AbstractPacket.AbstractHeader

org.pcap4j.packet.IpV4Packet.IpV4Header

All Implemented Interfaces:

java.io.Serializable, IpPacket.IpHeader, Packet.Header

Enclosing class:

IpV4Packet

public static final class IpV4Packet.IpV4Header
extends AbstractPacket.AbstractHeader
implements IpPacket.IpHeader

Since:

pcap4j 0.9.1

Author:

Kaito Yamada

See Also:

Serialized Form

Method Summary

Modifier and Type	Method	Description
protected java.lang.String	buildString()	This method builds the value toString() will return.
protected int	calcHashCode()	This method builds the value hashCode() will return using the byte array getRawData() returns.
protected int	calcLength()	This method calculates the value length() will return by adding up the lengths of byte arrays in the list getRawFields() returns.
boolean	equals(java.lang.Object obj)	Indicates whether some other object is "equal to" this one using return values of getRawData().
boolean	getDontFragmentFlag()
java.net.Inet4Address	getDstAddr()
short	getFragmentOffset()
short	getHeaderChecksum()
short	getIdentification()
int	getIdentificationAsInt()
byte	getIhl()
int	getIhlAsInt()
boolean	getMoreFragmentFlag()
java.util.List<IpV4Packet.IpV4Option>	getOptions()
byte[]	getPadding()
IpNumber	getProtocol()
protected java.util.List<byte[]>	getRawFields()	Returns a list of byte arrays which represents this header's fields.
boolean	getReservedFlag()
java.net.Inet4Address	getSrcAddr()
IpV4Packet.IpV4Tos	getTos()
short	getTotalLength()
int	getTotalLengthAsInt()
byte	getTtl()
int	getTtlAsInt()
IpVersion	getVersion()
boolean	hasValidChecksum(boolean acceptZero)

Methods inherited from class org.pcap4j.packet.AbstractPacket.AbstractHeader

buildHexString, buildRawData, getRawData, hashCode, length, toHexString, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.pcap4j.packet.Packet.Header

getRawData, length

Method Detail

getVersion

public IpVersion getVersion()

Specified by:

getVersion in interface IpPacket.IpHeader

Returns:

version

getIhl

public byte getIhl()

Returns:

ihl

getIhlAsInt

public int getIhlAsInt()

Returns:

ihl

getTos

public IpV4Packet.IpV4Tos getTos()

Returns:

tos

getTotalLength

public short getTotalLength()

Returns:

totalLength

getTotalLengthAsInt

public int getTotalLengthAsInt()

Returns:

totalLength

getIdentification

public short getIdentification()

Returns:

identification

getIdentificationAsInt

public int getIdentificationAsInt()

Returns:

identification

getReservedFlag

public boolean getReservedFlag()

Returns:

reservedFlag

getDontFragmentFlag

public boolean getDontFragmentFlag()

Returns:

dontFragmentFlag

getMoreFragmentFlag

public boolean getMoreFragmentFlag()

Returns:

moreFragmentFlag

getFragmentOffset

public short getFragmentOffset()

Returns:

fragmentOffset

getTtl

public byte getTtl()

Returns:

ttl

getTtlAsInt

public int getTtlAsInt()

Returns:

ttl

getProtocol

public IpNumber getProtocol()

Specified by:

getProtocol in interface IpPacket.IpHeader

Returns:

an IpNumber object which indicates the protocol of the following header.

getHeaderChecksum

public short getHeaderChecksum()

Returns:

headerChecksum

getSrcAddr

public java.net.Inet4Address getSrcAddr()

Specified by:

getSrcAddr in interface IpPacket.IpHeader

Returns:

srcAddr

getDstAddr

public java.net.Inet4Address getDstAddr()

Specified by:

getDstAddr in interface IpPacket.IpHeader

Returns:

dstAddr

getOptions

public java.util.List<IpV4Packet.IpV4Option> getOptions()

Returns:

options

getPadding

public byte[] getPadding()

Returns:

padding

hasValidChecksum

public boolean hasValidChecksum(boolean acceptZero)

Parameters:

acceptZero - acceptZero

Returns:

true if the packet represented by this object has a valid checksum; false otherwise.

getRawFields

protected java.util.List<byte[]> getRawFields()

Description copied from class: AbstractPacket.AbstractHeader

Returns a list of byte arrays which represents this header's fields. This method is called by calcLength() and buildRawData().

Specified by:

getRawFields in class AbstractPacket.AbstractHeader

Returns:

a list of byte arrays which represents this header's fields

calcLength

protected int calcLength()

Description copied from class: AbstractPacket.AbstractHeader

This method calculates the value length() will return by adding up the lengths of byte arrays in the list getRawFields() returns.

Overrides:

calcLength in class AbstractPacket.AbstractHeader

Returns:

a calculated length

buildString

protected java.lang.String buildString()

Description copied from class: AbstractPacket.AbstractHeader

This method builds the value toString() will return.

Overrides:

buildString in class AbstractPacket.AbstractHeader

Returns:

a string representation of this object

equals

public boolean equals(java.lang.Object obj)

Description copied from class: AbstractPacket.AbstractHeader

Indicates whether some other object is "equal to" this one using return values of getRawData(). This method should be overridden so that it does more strict comparisons more efficiently.

Overrides:

equals in class AbstractPacket.AbstractHeader

calcHashCode

protected int calcHashCode()

Description copied from class: AbstractPacket.AbstractHeader

This method builds the value hashCode() will return using the byte array getRawData() returns. This method may be better to be overridden for performance reason.

Overrides:

calcHashCode in class AbstractPacket.AbstractHeader

Returns:

a calculated hash code value for the object