gnu.java.zrtp

Class ZrtpStateClass

java.lang.Object

gnu.java.zrtp.ZrtpStateClass

public class ZrtpStateClass
extends Object

This class is the ZRTP protocol state engine. This class is responsible to handle the ZRTP protocol. It does not handle the ZRTP HMAC, DH, and other data management. This is done in class ZRtp which is the parent of this class. The methods of this class implement the ZRTP state actions.

Author:

Werner Dittmann <Werner.Dittmann@t-online.de>

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
protected class	ZrtpStateClass.Event
protected static class	ZrtpStateClass.EventDataType
static class	ZrtpStateClass.SecureSubStates
static class	ZrtpStateClass.ZrtpStates

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ZrtpStateClass(ZRtp p)

Method Summary

Modifier and Type	Method and Description
protected void	dispatchEvent()
protected void	evAckDetected()
protected void	evAckSent()
protected void	evCommitSent()
protected void	evInitial()
protected void	evSecureState()
protected void	evWaitClearAck()
protected void	evWaitCommit()
protected void	evWaitConfAck()
protected void	evWaitConfirm1()
protected void	evWaitConfirm2()
protected void	evWaitDHPart2()
protected void	evWaitErrorAck()
long	getTimeoutValue()
protected boolean	isInState(ZrtpStateClass.ZrtpStates state) Check current state of the ZRTP state engine
protected boolean	isMultiStream()
protected void	processEvent(ZrtpStateClass.Event ev)
protected void	sendSASRelay(ZrtpPacketSASRelay relay) Send a SAS relay packet.
protected void	setMultiStream(boolean multiStream)
protected void	stopZrtpStates()
protected boolean	subEvWaitRelayAck()

Methods inherited from class java.lang.Object

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

Constructor Detail

ZrtpStateClass

protected ZrtpStateClass(ZRtp p)

Method Detail

getTimeoutValue

public long getTimeoutValue()

processEvent

protected void processEvent(ZrtpStateClass.Event ev)

stopZrtpStates

protected void stopZrtpStates()

dispatchEvent

protected void dispatchEvent()

evInitial

protected void evInitial()

evAckDetected

protected void evAckDetected()

evAckSent

protected void evAckSent()

evWaitCommit

protected void evWaitCommit()

evCommitSent

protected void evCommitSent()

evWaitDHPart2

protected void evWaitDHPart2()

evWaitConfirm1

protected void evWaitConfirm1()

evWaitConfirm2

protected void evWaitConfirm2()

evWaitConfAck

protected void evWaitConfAck()

evWaitClearAck

protected void evWaitClearAck()

evSecureState

protected void evSecureState()

subEvWaitRelayAck

protected boolean subEvWaitRelayAck()

evWaitErrorAck

protected void evWaitErrorAck()

sendSASRelay

protected void sendSASRelay(ZrtpPacketSASRelay relay)

Send a SAS relay packet. Get the SAS relay packet and send it. It stores the packet in the sentPacket variable to enable resending. The method switches to secure sub-state WaitSasRelayAck.

Parameters:

relay - The relay packet to send

isMultiStream

protected boolean isMultiStream()

Returns:

the multiStream

setMultiStream

protected void setMultiStream(boolean multiStream)

Parameters:

multiStream - the multiStream to set

isInState

protected boolean isInState(ZrtpStateClass.ZrtpStates state)

Check current state of the ZRTP state engine

Parameters:

state - The state to check.

Returns:

Returns true id ZRTP engine is in the given state, false otherwise.