net.clackrouter.component.simplerouter
Class ICMPPortUnreach

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

All Implemented Interfaces:

java.io.Serializable, Alarm

public class ICMPPortUnreach
extends ClackComponent
implements java.io.Serializable

Generates ICMP port-unreachable messages when a local TCP or UDP stack provides it with an IP packet sent to an invalid local port.

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_IN
static int	PORT_OUT

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

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

Method Summary

void	acceptPacket(VNSPacket packet, int port_number) Accepts IP packets that were received by the local TCP or UDP stacks and that do not have any receiving socket bound on that port.
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) Allocates an array of ClackPort objects to be used by this component

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_IN

public static int PORT_IN

PORT_OUT

public static int PORT_OUT

NUM_PORTS

public static int NUM_PORTS

Constructor Detail

ICMPPortUnreach

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

Method Detail

setupPorts

protected void setupPorts(int numports)

Description copied from class: ClackComponent

Allocates an array of ClackPort objects to be used by this component

Overrides:

setupPorts in class ClackComponent

Parameters:

numports - the number of ports to create

acceptPacket

public void acceptPacket(VNSPacket packet,
                         int port_number)

Accepts IP packets that were received by the local TCP or UDP stacks and that do not have any receiving socket bound on that port. Generates a port-unreachable ICMP packet and sends routes it back to the source address of the invalid packet.

Overrides:

acceptPacket in class ClackComponent

Parameters:

packet - The pushed packet

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

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