net.clackrouter.packets
Class IPPacket

java.lang.Object
  net.clackrouter.protocol.data.VNSData
      net.clackrouter.packets.VNSPacket
          net.clackrouter.packets.IPPacket

public class IPPacket
extends VNSPacket

Encapsulates an Internet Protocol packet. Defined in RFC 791.

Nested Class Summary

class

IPPacket.Header Encapsulates IP packet header.

Field Summary

static byte	PPROTO_ENCAP
static byte	PPROTO_HELLO
static byte	PROTO_AH
static byte	PROTO_CLACK_OSPF
static byte	PROTO_CLACK_RIP
static byte	PROTO_DSTOPTS
static byte	PROTO_EGP
static byte	PROTO_EON
static byte	PROTO_ESP
static byte	PROTO_FRAGMENT
static byte	PROTO_GGP
static byte	PROTO_HOPOPTS
static byte	PROTO_ICMP
static byte	PROTO_ICMPV6
static byte	PROTO_IDP
static byte	PROTO_IGMP
static byte	PROTO_IP Protocols
static byte	PROTO_IPV6
static byte	PROTO_ND
static byte	PROTO_NONE
static byte	PROTO_PIM
static byte	PROTO_PUP
static byte	PROTO_ROUTING
static byte	PROTO_RSVP
static byte	PROTO_TCP
static byte	PROTO_UDP

Fields inherited from class net.clackrouter.packets.VNSPacket

m_inputInterfaceName, m_length, m_level2Type, m_local_packet, m_nextHopIPAddr, m_nextHopMacAddr, m_outputInterfaceName, m_packetByteBuffer, mParentHeader

Constructor Summary

IPPacket(java.nio.ByteBuffer packetByteBuffer)
Constucts an IP packet given valid bytes representing an IP packet, consisting of an IP header and the payload (body).

Method Summary

java.nio.ByteBuffer	getBodyBuffer() Returns the byte buffer containing the body of an IP packet.
byte[]	getBodyBytes() Returns a byte array that contains the payload of an IP packet.
int	getBodyLength() Returns length, in bytes, of an IP packet's body.
java.net.InetAddress	getDestinationAddress()
IPPacket.Header	getHeader() Returns the header of the IP packet.
VNSPacket	getPayload()
byte	getProtocol()
java.net.InetAddress	getSourceAddress()
void	pack()
void	setBodyBuffer(java.nio.ByteBuffer new_bb)
java.lang.String	toString() Represents an IP packet in a readable format, by field.
static IPPacket	wrap(VNSPacket packet, byte protocol, java.nio.ByteBuffer srcAddr, java.nio.ByteBuffer dstAddr) Creates an IP packet by using the supplied packet as a payload.
static IPPacket	wrap(VNSPacket packet, byte protocol, java.net.InetAddress srcAddr, java.net.InetAddress destAddr)

Methods inherited from class net.clackrouter.packets.VNSPacket

addToPath, get16bit, get32bit, getByteBuffer, getInputInterfaceName, getLength, getLevel2Type, getNextHopIPAddress, getNextHopMacAddress, getOutputInterfaceName, getParentHeader, getStringBuffer, isPacket, needsSourceAddress, setByteBuffer, setInputInterfaceName, setLevel2Type, setNeedsSourceAddress, setNextHopIPAddress, setNextHopMacAddress, setOutputInterfaceName, setParentHeader

Methods inherited from class net.clackrouter.protocol.data.VNSData

isBanner, isClose, isHWInfo

Methods inherited from class java.lang.Object

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

Field Detail

PROTO_IP

public static final byte PROTO_IP

Protocols

See Also:

Constant Field Values

PROTO_HOPOPTS

public static final byte PROTO_HOPOPTS

See Also:

Constant Field Values

PROTO_ICMP

public static final byte PROTO_ICMP

See Also:

Constant Field Values

PROTO_IGMP

public static final byte PROTO_IGMP

See Also:

Constant Field Values

PROTO_GGP

public static final byte PROTO_GGP

See Also:

Constant Field Values

PPROTO_ENCAP

public static final byte PPROTO_ENCAP

See Also:

Constant Field Values

PROTO_TCP

public static final byte PROTO_TCP

See Also:

Constant Field Values

PROTO_EGP

public static final byte PROTO_EGP

See Also:

Constant Field Values

PROTO_PUP

public static final byte PROTO_PUP

See Also:

Constant Field Values

PROTO_UDP

public static final byte PROTO_UDP

See Also:

Constant Field Values

PROTO_IDP

public static final byte PROTO_IDP

See Also:

Constant Field Values

PROTO_IPV6

public static final byte PROTO_IPV6

See Also:

Constant Field Values

PROTO_ROUTING

public static final byte PROTO_ROUTING

See Also:

Constant Field Values

PROTO_FRAGMENT

public static final byte PROTO_FRAGMENT

See Also:

Constant Field Values

PROTO_RSVP

public static final byte PROTO_RSVP

See Also:

Constant Field Values

PROTO_ESP

public static final byte PROTO_ESP

See Also:

Constant Field Values

PROTO_AH

public static final byte PROTO_AH

See Also:

Constant Field Values

PROTO_ICMPV6

public static final byte PROTO_ICMPV6

See Also:

Constant Field Values

PROTO_NONE

public static final byte PROTO_NONE

See Also:

Constant Field Values

PROTO_DSTOPTS

public static final byte PROTO_DSTOPTS

See Also:

Constant Field Values

PPROTO_HELLO

public static final byte PPROTO_HELLO

See Also:

Constant Field Values

PROTO_ND

public static final byte PROTO_ND

See Also:

Constant Field Values

PROTO_EON

public static final byte PROTO_EON

See Also:

Constant Field Values

PROTO_PIM

public static final byte PROTO_PIM

See Also:

Constant Field Values

PROTO_CLACK_RIP

public static final byte PROTO_CLACK_RIP

See Also:

Constant Field Values

PROTO_CLACK_OSPF

public static final byte PROTO_CLACK_OSPF

See Also:

Constant Field Values

Constructor Detail

IPPacket

public IPPacket(java.nio.ByteBuffer packetByteBuffer)

Constucts an IP packet given valid bytes representing an IP packet, consisting of an IP header and the payload (body).

Parameters:

packetByteBuffer - Byte buffer containing the IP packet

Method Detail

setBodyBuffer

public void setBodyBuffer(java.nio.ByteBuffer new_bb)

pack

public void pack()

getHeader

public IPPacket.Header getHeader()

Returns the header of the IP packet.

Returns:

Header of the IP packet

See Also:

IPPacket.Header

getBodyBuffer

public java.nio.ByteBuffer getBodyBuffer()

Returns the byte buffer containing the body of an IP packet.

Returns:

Byte buffer containing the body of an IP packet

getPayload

public VNSPacket getPayload()

getBodyLength

public int getBodyLength()

Returns length, in bytes, of an IP packet's body.

Returns:

Length of an IP packet's body

getBodyBytes

public byte[] getBodyBytes()

Returns a byte array that contains the payload of an IP packet.

Returns:

Array of bytes containing the body of an IP packet

wrap

public static IPPacket wrap(VNSPacket packet,
                            byte protocol,
                            java.net.InetAddress srcAddr,
                            java.net.InetAddress destAddr)
                     throws VNSInvalidPacketException

Throws:

VNSInvalidPacketException

wrap

public static IPPacket wrap(VNSPacket packet,
                            byte protocol,
                            java.nio.ByteBuffer srcAddr,
                            java.nio.ByteBuffer dstAddr)
                     throws VNSInvalidPacketException

Creates an IP packet by using the supplied packet as a payload. If a supplied packet is another IP packet, a VRInvalidPacketException is thrown. Default values are used for header fields not listed in this method's formal parameter list.

Parameters:

packet - Any packet, except IP packet

protocol - Protocol

srcAddr - Source IP address

dstAddr - Destination IP address

Throws:

VNSInvalidPacketException

toString

public java.lang.String toString()

Represents an IP packet in a readable format, by field. It is equivalent to calling toString() on the header of the packet.

Overrides:

toString in class VNSPacket

Returns:

Packet in readable format

getSourceAddress

public java.net.InetAddress getSourceAddress()

getDestinationAddress

public java.net.InetAddress getDestinationAddress()

getProtocol

public byte getProtocol()