net.clackrouter.component.tcp
Class Retransmitter

java.lang.Object
  net.clackrouter.component.base.ClackComponent
      net.clackrouter.component.tcp.Retransmitter

All Implemented Interfaces:

Alarm

public class Retransmitter
extends ClackComponent

TCP subcomponent that handles timeouts and the retransmission of unacknowledged packets.

Nested Class Summary

class

Retransmitter.RetransListEntry

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

ClackComponent.Waiter

Field Summary

java.util.ArrayList	mRetrans
TCB	mTCB
static int	NUM_PORTS
static int	PORT_NET_OUT
static int	PORT_PROCESS_IN
static int	PORT_PROCESS_OUT
static int	PORT_STORE_IN

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

Retransmitter(TCB tcb, Router router, java.lang.String name)

Method Summary

void	acceptPacket(VNSPacket packet, int port_num) Depending on the input port, either removes acknowledged data from its retransmission list, or stores a packet in the retrans list.
void	poll() Checks to see if any timeouts have occured, in which case it retransmits packets.
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, getColor, getComponentCell, getHierarchicalView, getLog, getName, getNumPorts, getPacketCountIn, getPacketCountOut, getPendingError, getPort, getPropertiesView, getRouter, getSerializableProperties, getTime, getTypeName, getUniqueCount, getView, handlePullRequest, hasError, initializeProperties, isHierarchical, isModifying, log, notifyAlarm, 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_PROCESS_IN

public static int PORT_PROCESS_IN

PORT_STORE_IN

public static int PORT_STORE_IN

PORT_NET_OUT

public static int PORT_NET_OUT

PORT_PROCESS_OUT

public static int PORT_PROCESS_OUT

NUM_PORTS

public static int NUM_PORTS

mRetrans

public java.util.ArrayList mRetrans

mTCB

public TCB mTCB

Constructor Detail

Retransmitter

public Retransmitter(TCB tcb,
                     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_num)

Depending on the input port, either removes acknowledged data from its retransmission list, or stores a packet in the retrans list.

Overrides:

acceptPacket in class ClackComponent

Parameters:

packet - The pushed packet

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

poll

public void poll()

Checks to see if any timeouts have occured, in which case it retransmits packets.

Overrides:

poll in class ClackComponent