simnet
Class BandwidthTest

java.lang.Object
  java.lang.Thread
      simnet.Application
          simnet.BandwidthTest

All Implemented Interfaces:

Pluggable, PlugoutListener, java.lang.Runnable, SimnetWindowListener

public class BandwidthTest

extends Application

implements Pluggable

An application that estimates available bandwidth across a link.

Nested Class Summary

(package private) class

BandwidthTest.BWTThread A worker thread to send test or probe packets.

Field Summary

static int	BW_RX_PORT Port to receive bandwidth test packets on.
static int	PACKET_SIZE
protected java.util.Hashtable	results Hash table of histogram results; keys are source port.
(package private) DatagramSocket	rx_sock

Fields inherited from class simnet.Application

appid, appstart, frame, initialized, node, NODE_ID, pid, random, sim, win

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

BandwidthTest()

Method Summary

void	BWRawTestResults(java.lang.Integer port) Print the raw results for a particular port.
void	BWTest(java.lang.String dest, java.lang.Integer period, java.lang.Integer duration, java.lang.String param) Run a bandwidth test.
void	BWTestSummary(java.lang.Integer capacity, java.lang.Integer answer) Estimates the amount of available bandwidth, and determines how close this is to the actual amount.
void	customInit() Create a datagram socket and bind it to the bandwidth test port.
boolean	prePlugout(java.lang.Object replacement) Just close the socket to clean up (not really necessary...).
void	run() Receive packets and record statistics.

Methods inherited from class simnet.Application

closeWindow, finalize, getTitleString, initialize, plugoutNotification, printout, printout, processWindowCommand, rawOut, window

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getContextClassLoader, getName, getPriority, getThreadGroup, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setName, setPriority, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

BW_RX_PORT

public static final int BW_RX_PORT

Port to receive bandwidth test packets on.

See Also:

Constant Field Values

PACKET_SIZE

public static final int PACKET_SIZE

See Also:

Constant Field Values

rx_sock

DatagramSocket rx_sock

results

protected java.util.Hashtable results

Hash table of histogram results; keys are source port.

Constructor Detail

BandwidthTest

public BandwidthTest()

Method Detail

customInit

public void customInit()

Create a datagram socket and bind it to the bandwidth test port.

Overrides:

customInit in class Application

BWTestSummary

public void BWTestSummary(java.lang.Integer capacity,
                          java.lang.Integer answer)

Estimates the amount of available bandwidth, and determines how close this is to the actual amount. For convienence, the answer is given as the delay between base packets.

BWRawTestResults

public void BWRawTestResults(java.lang.Integer port)

Print the raw results for a particular port.

BWTest

public void BWTest(java.lang.String dest,
                   java.lang.Integer period,
                   java.lang.Integer duration,
                   java.lang.String param)

Run a bandwidth test.

run

public void run()

Receive packets and record statistics.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class Application

prePlugout

public boolean prePlugout(java.lang.Object replacement)

Just close the socket to clean up (not really necessary...).

Specified by:

prePlugout in interface Pluggable

Returns:

if this object can now be removed (was the operation sucessful)