SSF.OS.OSPFv2
Class Packet

java.lang.Object
  |
  +--SSF.OS.ProtocolMessage
        |
        +--SSF.OS.OSPFv2.Packet

public class Packet

extends ProtocolMessage

This class implements a generic OSPF packet. The following from RFC 2178 are not included: 1) OSPF Version number 2) Packet length 3) Checksum 4) Authentication Type 5) Authentication

Field Summary

int	areaNum The area to which this packet belongs.
java.lang.String	as_nh The NHI address prefix of the AS to which this packet belongs.
static int	DATABASE Indicates a database description packet.
static int	HEADER_LENGTH The standard length of an OSPF Packet header.
static int	HELLO Indicates a hello packet.
static int	LSACK Indicates a link state acknowledgement packet.
static int	LSREQUEST Indicates a link state request packet.
static int	LSUPDATE Indicates a link state update packet.
java.lang.String	nh The NHI prefix of the sender.
int	router_ID The identification of the router which sent this packet, chosen as the smallest of the IPaddress of all its interfaces.
int	type The type of this Packet.

Constructor Summary

Packet(int type, int router_ID, java.lang.String nh, java.lang.String as_nh, int areaNum)
Constructs a packet given type, router ID, area ID.

Method Summary

int	bytecount() Return the total size (in bytes) of this OSPF Packet including the header.
static int	headerByteCount() Return the size (in bytes) of this Packet only, don't include the payload, if any.
java.lang.String	toString()

Methods inherited from class SSF.OS.ProtocolMessage

carryPayload, copy, dropHeader, dropPayload, frombytes, fromVersion, header_bytecount, payload, previous, size, tobytes, version

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

HELLO

public static final int HELLO

Indicates a hello packet.

See Also:

Constant Field Values

DATABASE

public static final int DATABASE

Indicates a database description packet.

See Also:

Constant Field Values

LSREQUEST

public static final int LSREQUEST

Indicates a link state request packet.

See Also:

Constant Field Values

LSUPDATE

public static final int LSUPDATE

Indicates a link state update packet.

See Also:

Constant Field Values

LSACK

public static final int LSACK

Indicates a link state acknowledgement packet.

See Also:

Constant Field Values

HEADER_LENGTH

public static final int HEADER_LENGTH

The standard length of an OSPF Packet header.

See Also:

Constant Field Values

type

public int type

The type of this Packet.

router_ID

public int router_ID

The identification of the router which sent this packet, chosen as the smallest of the IPaddress of all its interfaces.

nh

public java.lang.String nh

The NHI prefix of the sender.

as_nh

public java.lang.String as_nh

The NHI address prefix of the AS to which this packet belongs.

areaNum

public int areaNum

The area to which this packet belongs.

Constructor Detail

Packet

public Packet(int type,
              int router_ID,
              java.lang.String nh,
              java.lang.String as_nh,
              int areaNum)

Constructs a packet given type, router ID, area ID.

Method Detail

bytecount

public int bytecount()

Return the total size (in bytes) of this OSPF Packet including the header. All and only fields specified in RFC 2328 are included in calculation!!!

Overrides:

bytecount in class ProtocolMessage

headerByteCount

public static int headerByteCount()

Return the size (in bytes) of this Packet only, don't include the payload, if any.

toString

public java.lang.String toString()

Overrides:

toString in class java.lang.Object