jpcap
Class IPPacket

java.lang.Object
  |
  +--jpcap.Packet
        |
        +--jpcap.IPPacket

Direct Known Subclasses:

ICMPPacket, TCPPacket, UDPPacket

public class IPPacket

extends Packet

This class represents an IP packet.

Both IPv4 or v6 packet can be handled by this class.

Field Summary

boolean	d_flag IP flag bit [D]elay (v4)
boolean	dont_frag Don't fragment flag (v4)
IPAddress	dst_ip Destionation IP address
int	flow_label Flow label (v6)
short	hop_limit Hop limit (Time To Live) (v4/v6)
short	ident IDENTIFICATION (v4)
short	length Length of this packet (v4/v6)
boolean	more_frag More fragment flag (v4)
short	offset Fragment offset (v4)
java.util.Vector	options Option headers (v6)
byte	priority Priority (or class) of this packet (v4/v6)
short	protocol Protocol of higher layer (v4/v6)
boolean	r_flag IP flag bit [R]eliability (v4)
boolean	rsv_frag Reserved fragmentation flag (v4)
IPAddress	src_ip Source IP address
boolean	t_flag IP flag bit [T]hrough (v4)
byte	version IP version (v4/v6)

Fields inherited from class jpcap.Packet

caplen, data, datalink, sec, usec

Constructor Summary

IPPacket()

Method Summary

void	setIPv4Parameter(int priority, boolean d_flag, boolean t_flag, boolean r_flag, boolean rsv_frag, boolean dont_frag, boolean more_frag, int offset, int ident, int ttl, int protocol, IPAddress src, IPAddress dst) Sets up the parameters of IPv4
void	setIPv6Parameter(int cls, int flowlabel, int nxt_hdr, int hop_limit, IPAddress src, IPAddress dst) Sets up the parameters of IPv6
java.lang.String	toString() Converts this object to String IPv4: src_ip->dst_ip protocol(protocol) priority(priority) [D][T][R] hop(hop_limit) [RF/][DF/][MF] offset(offset) ident(ident) IPv6: src_ip->dst_ip protocol(protocol) priority(priority) flowlabel(flow_label) hop(hop_limit)

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Detail

version

public byte version

IP version (v4/v6)

priority

public byte priority

Priority (or class) of this packet (v4/v6)

d_flag

public boolean d_flag

IP flag bit [D]elay (v4)

t_flag

public boolean t_flag

IP flag bit [T]hrough (v4)

r_flag

public boolean r_flag

IP flag bit [R]eliability (v4)

length

public short length

Length of this packet (v4/v6)

rsv_frag

public boolean rsv_frag

Reserved fragmentation flag (v4)

dont_frag

public boolean dont_frag

Don't fragment flag (v4)

more_frag

public boolean more_frag

More fragment flag (v4)

offset

public short offset

Fragment offset (v4)

hop_limit

public short hop_limit

Hop limit (Time To Live) (v4/v6)

protocol

public short protocol

Protocol of higher layer (v4/v6)

ident

public short ident

IDENTIFICATION (v4)

flow_label

public int flow_label

Flow label (v6)

src_ip

public IPAddress src_ip

Source IP address

dst_ip

public IPAddress dst_ip

Destionation IP address

options

public java.util.Vector options

Option headers (v6)

Constructor Detail

IPPacket

public IPPacket()

Method Detail

setIPv4Parameter

public void setIPv4Parameter(int priority,
                             boolean d_flag,
                             boolean t_flag,
                             boolean r_flag,
                             boolean rsv_frag,
                             boolean dont_frag,
                             boolean more_frag,
                             int offset,
                             int ident,
                             int ttl,
                             int protocol,
                             IPAddress src,
                             IPAddress dst)

Sets up the parameters of IPv4

Parameters:

priority - Priority

d_flag,t_flag,r_flag - Delay, Through, Realiability flags

rsv_frag - Reserved fragment flag

dont_frag - Don't fragment flag

more_frag - More fragment flag

offset - Fragment offset

ident - Identification

ttl - Time To Live

protocol - Protocol number

src - Source IP address

dst - Destionation IP address

setIPv6Parameter

public void setIPv6Parameter(int cls,
                             int flowlabel,
                             int nxt_hdr,
                             int hop_limit,
                             IPAddress src,
                             IPAddress dst)

Sets up the parameters of IPv6

Parameters:

class - Class

flow_label - Flow label

nxt_hdr - Next header

hop_limit - Hop limit

src - Source IP address

dst - Destionation IP address

toString

public java.lang.String toString()

Converts this object to String

IPv4: src_ip->dst_ip protocol(protocol) priority(priority) [D][T][R] hop(hop_limit) [RF/][DF/][MF] offset(offset) ident(ident)

IPv6: src_ip->dst_ip protocol(protocol) priority(priority) flowlabel(flow_label) hop(hop_limit)

Overrides:

toString in class Packet