Package org.pcap4j.packet

Class UdpPacket.UdpHeader

java.lang.Object

org.pcap4j.packet.AbstractPacket.AbstractHeader

org.pcap4j.packet.UdpPacket.UdpHeader

All Implemented Interfaces:

java.io.Serializable, Packet.Header, TransportPacket.TransportHeader

Enclosing class:

UdpPacket

public static final class UdpPacket.UdpHeader
extends AbstractPacket.AbstractHeader
implements TransportPacket.TransportHeader

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.
boolean	equals(java.lang.Object obj)	Indicates whether some other object is "equal to" this one using return values of getRawData().
short	getChecksum()
UdpPort	getDstPort()
short	getLength()
int	getLengthAsInt()
protected java.util.List<byte[]>	getRawFields()	Returns a list of byte arrays which represents this header's fields.
UdpPort	getSrcPort()
int	length()	Returns the header length in bytes.

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

buildHexString, buildRawData, calcLength, getRawData, hashCode, 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

Method Detail

getSrcPort

public UdpPort getSrcPort()

Specified by:

getSrcPort in interface TransportPacket.TransportHeader

Returns:

Source port

getDstPort

public UdpPort getDstPort()

Specified by:

getDstPort in interface TransportPacket.TransportHeader

Returns:

Destination port

getLength

public short getLength()

Returns:

length

getLengthAsInt

public int getLengthAsInt()

Returns:

length

getChecksum

public short getChecksum()

Returns:

checksum

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

length

public int length()

Description copied from class: AbstractPacket.AbstractHeader

Returns the header length in bytes. This method calls calcLength() and caches the return value when it is called for the first time, and then, this method returns the cached value from the second time.

Specified by:

length in interface Packet.Header

Overrides:

length in class AbstractPacket.AbstractHeader

Returns:

the length of the byte stream of the header represented by this object in bytes

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