net.clackrouter.component.simplerouter
Class IPHeaderCheck

java.lang.Object
  net.clackrouter.component.base.ClackComponent
      net.clackrouter.component.simplerouter.IPHeaderCheck

All Implemented Interfaces:

java.io.Serializable, Alarm

public class IPHeaderCheck
extends ClackComponent
implements java.io.Serializable

Performs some basic sanity checks on the IP header as part of the forwarding path.

See Also:

Serialized Form

Nested Class Summary

Nested classes/interfaces inherited from class net.clackrouter.component.base.ClackComponent

ClackComponent.Waiter

Field Summary

static int	NUM_PORTS
static int	PORT_BADEGG
static int	PORT_GOODEGG
static int	PORT_INPUT

Fields inherited from class net.clackrouter.component.base.ClackComponent

componentCell, m_has_error, m_log, m_name, m_num_ports, m_packetcount_in, m_packetcount_out, m_ports, mListeners, mRouter, pendingError, SIGNAL_ERROR_LEN_MSEC, UNIQUE_COUNT, view

Constructor Summary

IPHeaderCheck(Router router, java.lang.String name)

Method Summary

void	acceptPacket(VNSPacket packet, int port_number) The starting point for packet-processing when packets are "pushed" to this component.
int	getBadChk()
int	getBadCnt()
int	getBadIHL()
int	getBadLen()
int	getBadVer()
java.awt.Color	getColor() The color this component should be rendered in, assuming a standard component rendering by the ComponentView.ComponentRenderer class.
protected void	setupPorts(int numports) Validates the IP checksum, version, and header length of the IP packet, send good packets out one port for forwarding and sending those that fail the tests to a different port.

Methods inherited from class net.clackrouter.component.base.ClackComponent

createCopy, createInputPullPort, createInputPushPort, createOutputPullPort, createOutputPushPort, error, fireListeners, getComponentCell, getHierarchicalView, getLog, getName, getNumPorts, getPacketCountIn, getPacketCountOut, getPendingError, getPort, getPropertiesView, getRouter, getSerializableProperties, getTime, getTypeName, getUniqueCount, getView, handlePullRequest, hasError, initializeProperties, isHierarchical, isModifying, log, notifyAlarm, poll, registerListener, sendOutPort, setAlarm, setComponentCell, setName, setPendingError, setView, showErrorDialog, signalError, try_repaint, unregisterListener

Methods inherited from class java.lang.Object

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

Field Detail

PORT_INPUT

public static int PORT_INPUT

PORT_GOODEGG

public static int PORT_GOODEGG

PORT_BADEGG

public static int PORT_BADEGG

NUM_PORTS

public static int NUM_PORTS

Constructor Detail

IPHeaderCheck

public IPHeaderCheck(Router router,
                     java.lang.String name)

Method Detail

setupPorts

protected void setupPorts(int numports)

Validates the IP checksum, version, and header length of the IP packet, send good packets out one port for forwarding and sending those that fail the tests to a different port.

Overrides:

setupPorts in class ClackComponent

Parameters:

numports - the number of ports to create

acceptPacket

public void acceptPacket(VNSPacket packet,
                         int port_number)

Description copied from class: ClackComponent

The starting point for packet-processing when packets are "pushed" to this component.

The default implementation warns that the packet is being ignored.

Overrides:

acceptPacket in class ClackComponent

Parameters:

packet - The pushed packet

port_number - The number of the port that this packet is arriving on

getBadVer

public int getBadVer()

getBadIHL

public int getBadIHL()

getBadLen

public int getBadLen()

getBadChk

public int getBadChk()

getBadCnt

public int getBadCnt()

getColor

public java.awt.Color getColor()

Description copied from class: ClackComponent

The color this component should be rendered in, assuming a standard component rendering by the ComponentView.ComponentRenderer class.

Other renderers may ignore this value.

Overrides:

getColor in class ClackComponent

Returns:

the rendering color