testEnvironment
Class ClientSimulator

java.lang.Object
  java.lang.Thread
      testEnvironment.ClientSimulator

All Implemented Interfaces:

java.lang.Runnable

final class ClientSimulator
extends java.lang.Thread

Simulates a Clients behavior using its InputStream and OutputStream according to the following logic: "Send K bytes of data with a delay of L ms between sending, M times."

K, L and M are taken from the property file (TestEnvironmentProperties.txt).

Author:

Karl-Peter Fuchs

Nested Class Summary

Nested classes/interfaces inherited from class java.lang.Thread

java.lang.Thread.State, java.lang.Thread.UncaughtExceptionHandler

Field Summary

private static InternalInformationPortController	internalInformationPort Reference on component InternalInformationPort.
private static java.util.logging.Logger	LOGGER Logger used to log and display information.
private java.security.Key[]	publicKeysOfMixes Public keys of the mix used to encrypt messages.
private static java.util.Random	random Random number generator.

Fields inherited from class java.lang.Thread

MAX_PRIORITY, MIN_PRIORITY, NORM_PRIORITY

Constructor Summary

protected

ClientSimulator() Generates a new ClientSimulator that can be used to simulates a Clients behavior using its InputStream and OutputStream according to the following logic: "Send K bytes of data with a delay of L ms between sending, M times."

Method Summary

private byte[]	generateRandomMessage(int size) Generates a random byte message (each byte represents a number between 0 and 9 (both inclusive; ANSI)).
private static java.security.PublicKey[]	getPublicKeys() Retrieves the public keys of all mixes in the cascade (address of first mix must be specified in property file) for later encryption.
private static int	getUpperBound(java.lang.String expression) Returns x from a bypassed String of from RANDOM-x, where x is a number (e. g.
protected static int	getVariable(java.lang.String variableKey) Returns the value of one of the variables X, Y, Z, K, L, or M from property file (as specified by the bypassed value).
void	run() Simulates a Client's behavior.

Methods inherited from class java.lang.Thread

activeCount, checkAccess, countStackFrames, currentThread, destroy, dumpStack, enumerate, getAllStackTraces, getContextClassLoader, getDefaultUncaughtExceptionHandler, getId, getName, getPriority, getStackTrace, getState, getThreadGroup, getUncaughtExceptionHandler, holdsLock, interrupt, interrupted, isAlive, isDaemon, isInterrupted, join, join, join, resume, setContextClassLoader, setDaemon, setDefaultUncaughtExceptionHandler, setName, setPriority, setUncaughtExceptionHandler, sleep, sleep, start, stop, stop, suspend, toString, yield

Methods inherited from class java.lang.Object

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

Field Detail

internalInformationPort

private static InternalInformationPortController internalInformationPort

Reference on component InternalInformationPort. Used to display and/or log data and read general settings.

LOGGER

private static final java.util.logging.Logger LOGGER

Logger used to log and display information.

random

private static java.util.Random random

Random number generator.

publicKeysOfMixes

private java.security.Key[] publicKeysOfMixes

Public keys of the mix used to encrypt messages.

Constructor Detail

ClientSimulator

protected ClientSimulator()

Generates a new ClientSimulator that can be used to simulates a Clients behavior using its InputStream and OutputStream according to the following logic: "Send K bytes of data with a delay of L ms between sending, M times."

K, L and M are taken from the property file (TestEnvironmentProperties.txt).

Method Detail

run

public void run()

Simulates a Client's behavior.

Specified by:

run in interface java.lang.Runnable

Overrides:

run in class java.lang.Thread

generateRandomMessage

private byte[] generateRandomMessage(int size)

Generates a random byte message (each byte represents a number between 0 and 9 (both inclusive; ANSI)).

Parameters:

size - Length of the random byte message to be created.

Returns:

A random byte message.

getVariable

protected static int getVariable(java.lang.String variableKey)

Returns the value of one of the variables X, Y, Z, K, L, or M from property file (as specified by the bypassed value).

Parameters:

variableKey - Name (=key) of the variable (=property) to be returned.

Returns:

Value of the specified variable.

getUpperBound

private static int getUpperBound(java.lang.String expression)

Returns x from a bypassed String of from RANDOM-x, where x is a number (e. g. "RANDOM-1000"). Used to get the upper bound for a randomly chosen value for one of the variables X, Y, Z, K, L, or M as specified by the user in property file.

Parameters:

expression - String containing the upper bound.

Returns:

Upper bound extracted from the bypassed String.

getPublicKeys

private static java.security.PublicKey[] getPublicKeys()

Retrieves the public keys of all mixes in the cascade (address of first mix must be specified in property file) for later encryption.

Returns:

The public keys of all mixes in the cascade.