net.onrc.openvirtex.packet

Class UDP

java.lang.Object

net.onrc.openvirtex.packet.BasePacket

net.onrc.openvirtex.packet.UDP

All Implemented Interfaces:

IPacket

public class UDP
extends BasePacket

Author:

David Erickson (daviderickson@cs.stanford.edu)

Field Summary

Fields

Modifier and Type	Field and Description
protected short	checksum
static Map<Short,Class<? extends IPacket>>	decodeMap
protected short	destinationPort
static short	DHCP_CLIENT_PORT
static short	DHCP_SERVER_PORT
protected short	length
protected short	sourcePort

Fields inherited from class net.onrc.openvirtex.packet.BasePacket

parent, payload

Constructor Summary

Constructors

Constructor and Description
UDP()

Method Summary

Methods

Modifier and Type	Method and Description
IPacket	deserialize(byte[] data, int offset, int length) Deserializes this packet layer and all possible payloads.
boolean	equals(Object obj)
short	getChecksum()
short	getDestinationPort()
short	getLength()
short	getSourcePort()
int	hashCode()
void	resetChecksum() Reset any checksums as needed, and call resetChecksum on all parents.
byte[]	serialize() Serializes the packet.
UDP	setChecksum(short checksum)
UDP	setDestinationPort(short destinationPort)
UDP	setSourcePort(short sourcePort)

Methods inherited from class net.onrc.openvirtex.packet.BasePacket

clone, getParent, getPayload, setParent, setPayload

Methods inherited from class java.lang.Object

finalize, getClass, notify, notifyAll, toString, wait, wait, wait

Field Detail

decodeMap

public static Map<Short,Class<? extends IPacket>> decodeMap

DHCP_SERVER_PORT

public static final short DHCP_SERVER_PORT

See Also:

Constant Field Values

DHCP_CLIENT_PORT

public static final short DHCP_CLIENT_PORT

See Also:

Constant Field Values

sourcePort

protected short sourcePort

destinationPort

protected short destinationPort

length

protected short length

checksum

protected short checksum

Constructor Detail

UDP

public UDP()

Method Detail

getSourcePort

public short getSourcePort()

Returns:

the sourcePort

setSourcePort

public UDP setSourcePort(short sourcePort)

Parameters:

sourcePort - the sourcePort to set

getDestinationPort

public short getDestinationPort()

Returns:

the destinationPort

setDestinationPort

public UDP setDestinationPort(short destinationPort)

Parameters:

destinationPort - the destinationPort to set

getLength

public short getLength()

Returns:

the length

getChecksum

public short getChecksum()

Returns:

the checksum

setChecksum

public UDP setChecksum(short checksum)

Parameters:

checksum - the checksum to set

resetChecksum

public void resetChecksum()

Description copied from interface: IPacket

Reset any checksums as needed, and call resetChecksum on all parents.

Specified by:

resetChecksum in interface IPacket

Overrides:

resetChecksum in class BasePacket

serialize

public byte[] serialize()

Serializes the packet. Will compute and set the following fields if they are set to specific values at the time serialize is called: -checksum : 0 -length : 0

Returns:

a byte[] containing this packet and payloads

hashCode

public int hashCode()

Overrides:

hashCode in class BasePacket

equals

public boolean equals(Object obj)

Overrides:

equals in class BasePacket

deserialize

public IPacket deserialize(byte[] data,
                  int offset,
                  int length)

Description copied from interface: IPacket

Deserializes this packet layer and all possible payloads.

offset - offset to start deserializing from

length - length of the data to deserialize

Returns:

the deserialized data