net.clackrouter.packets
Class VNSTCPPacket

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

public class VNSTCPPacket
extends VNSPacket

Represents a Transmission Control Protocol (TCP) Packet.

Options are not supported right now, because they are a pain in the butt. Perhaps I will support them in the future.

Field Summary

long	ack_num
int	control_flags
int	data_offset
static int	DEFAULT_HEADER_LEN
int	dst_port
int	m_header_len_bytes
int	recv_window
long	seq_num
int	src_port
static int	TH_ACK
static int	TH_FIN
static int	TH_PSH
static int	TH_RST
static int	TH_SYN
static int	TH_URG

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

VNSTCPPacket(java.nio.ByteBuffer packetBuffer)

VNSTCPPacket(int src_port, int dst_port, long seq_num, long ack_num, int flags, int recv_window, byte[] data)

Method Summary

boolean	ackFlagSet()
boolean	finFlagSet()
long	getAckNum()
java.nio.ByteBuffer	getBodyBuffer()
static java.lang.String	getByteString(byte[] arr)
int	getDataSize()
int	getDestinationPort()
java.net.InetAddress	getDestIPAddress()
int	getRecvWindowSize()
int	getSeqCount()
long	getSeqNum()
java.net.InetAddress	getSourceIPAddress()
int	getSourcePort()
void	pack()
void	setDestIPAddress(java.net.InetAddress addr)
void	setSourceIPAddress(java.net.InetAddress addr)
boolean	synFlagSet()
java.lang.String	toString() Represents the packet in a readable format, by field.
void	trimDataEnd(int numBytes)
void	trimDataFront(int numBytes)

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

DEFAULT_HEADER_LEN

public static final int DEFAULT_HEADER_LEN

See Also:

Constant Field Values

TH_FIN

public static final int TH_FIN

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Constant Field Values

TH_SYN

public static final int TH_SYN

See Also:

Constant Field Values

TH_RST

public static final int TH_RST

See Also:

Constant Field Values

TH_PSH

public static final int TH_PSH

See Also:

Constant Field Values

TH_ACK

public static final int TH_ACK

See Also:

Constant Field Values

TH_URG

public static final int TH_URG

See Also:

Constant Field Values

seq_num

public long seq_num

ack_num

public long ack_num

src_port

public int src_port

dst_port

public int dst_port

recv_window

public int recv_window

control_flags

public int control_flags

data_offset

public int data_offset

m_header_len_bytes

public int m_header_len_bytes

Constructor Detail

VNSTCPPacket

public VNSTCPPacket(java.nio.ByteBuffer packetBuffer)

VNSTCPPacket

public VNSTCPPacket(int src_port,
                    int dst_port,
                    long seq_num,
                    long ack_num,
                    int flags,
                    int recv_window,
                    byte[] data)

Method Detail

pack

public void pack()

trimDataFront

public void trimDataFront(int numBytes)

trimDataEnd

public void trimDataEnd(int numBytes)

getSourcePort

public int getSourcePort()

getDestinationPort

public int getDestinationPort()

getSeqNum

public long getSeqNum()

getAckNum

public long getAckNum()

getRecvWindowSize

public int getRecvWindowSize()

synFlagSet

public boolean synFlagSet()

ackFlagSet

public boolean ackFlagSet()

finFlagSet

public boolean finFlagSet()

getBodyBuffer

public java.nio.ByteBuffer getBodyBuffer()

getDataSize

public int getDataSize()

getSeqCount

public int getSeqCount()

toString

public java.lang.String toString()

Description copied from class: VNSPacket

Represents the packet in a readable format, by field.

Overrides:

toString in class VNSPacket

Returns:

Packet in readable format

getByteString

public static java.lang.String getByteString(byte[] arr)

setDestIPAddress

public void setDestIPAddress(java.net.InetAddress addr)

getDestIPAddress

public java.net.InetAddress getDestIPAddress()

setSourceIPAddress

public void setSourceIPAddress(java.net.InetAddress addr)

getSourceIPAddress

public java.net.InetAddress getSourceIPAddress()