net.clackrouter.component.simplerouter
Class ICMPPortUnreach

java.lang.Object
  extended by net.clackrouter.component.base.ClackComponent
      extended by 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