anon.tor

Class TorChannel

java.lang.Object

anon.shared.AbstractAnonChannel

anon.tor.TorChannel

All Implemented Interfaces:

AnonChannel

Direct Known Subclasses:

TorSocksChannel

public class TorChannel
extends AbstractAnonChannel

Author:

stefan

Field Summary

Fields

Modifier and Type	Field and Description
private boolean	m_bChannelCreated
private boolean	m_bCreateError
private boolean	m_bDoNotCloseChannelOnError
protected Circuit	m_circuit
private int	m_iSendRelayCellsWaitingForDelivery
private java.lang.Object	m_oSyncSend
private java.lang.Object	m_oSyncSendCellCounter
private java.lang.Object	m_oSyncSendRelayCellsWaitingForDelivery
private java.lang.Object	m_oWaitForOpen
private int	m_recvcellcounter
private int	m_sendcellcounter
private static int	MAX_CELL_DATA

Fields inherited from class anon.shared.AbstractAnonChannel

m_bIsClosed, m_bIsClosedByPeer, m_id

Fields inherited from interface anon.AnonChannel

HTTP, SMTP, SOCKS, TCP, UDP, UDP_OVER_TCP, UDP_OVER_UDP, VPN

Constructor Summary

Constructors

Constructor and Description
TorChannel()

Method Summary

Modifier and Type	Method and Description
private void	addToSendCellCounter(int value)
protected void	close_impl()
void	close() Closes the channel and releases all resources used.
void	closedByPeer()
protected boolean	connect(java.lang.String addr, int port) connects to a host over the Tor network
protected void	decreaseSendRelayCellsWaitingForDelivery()
int	dispatchCell(RelayCell cell) dispatches the cells to the outputstream
int	getOutputBlockSize() Returns a value that indicates the current optimum size of data to write.
private void	internalClose() Close this channel (called from inside the class) but respecting the doNotCloseOnError flag!
boolean	isClosed() Returns if the channel is already closed, i.e. no data can be sent / recieved any more on this channel.
boolean	isClosedByPeer() gets if the connection was closed by peer
protected void	send(byte[] arg0, int len)
protected void	setCircuit(Circuit c)
protected void	setDoNotCloseChannelOnErrorDuringConnect(boolean b)
protected void	setStreamID(int id)

Methods inherited from class anon.shared.AbstractAnonChannel

finalize, getInputStream, getOutputStream, hashCode, recv

Methods inherited from class java.lang.Object

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

Field Detail

MAX_CELL_DATA

private static final int MAX_CELL_DATA

See Also:

Constant Field Values

m_circuit

protected Circuit m_circuit

m_recvcellcounter

private volatile int m_recvcellcounter

m_sendcellcounter

private volatile int m_sendcellcounter

m_iSendRelayCellsWaitingForDelivery

private volatile int m_iSendRelayCellsWaitingForDelivery

m_bChannelCreated

private volatile boolean m_bChannelCreated

m_bCreateError

private volatile boolean m_bCreateError

m_oWaitForOpen

private java.lang.Object m_oWaitForOpen

m_oSyncSendCellCounter

private java.lang.Object m_oSyncSendCellCounter

m_oSyncSend

private java.lang.Object m_oSyncSend

m_oSyncSendRelayCellsWaitingForDelivery

private java.lang.Object m_oSyncSendRelayCellsWaitingForDelivery

m_bDoNotCloseChannelOnError

private volatile boolean m_bDoNotCloseChannelOnError

Constructor Detail

TorChannel

public TorChannel()

Method Detail

addToSendCellCounter

private void addToSendCellCounter(int value)

decreaseSendRelayCellsWaitingForDelivery

protected void decreaseSendRelayCellsWaitingForDelivery()

setStreamID

protected void setStreamID(int id)

setCircuit

protected void setCircuit(Circuit c)

getOutputBlockSize

public int getOutputBlockSize()

Description copied from interface: AnonChannel

Returns a value that indicates the current optimum size of data to write. Because often anon services transport the data fragmented into fixed sized packets for optimum performance it may be good to send data according to the packet size to avoid unneccessary overheads.

Returns:

the current optimum size for output data. If 1 is returned the size does not matter.

send

protected void send(byte[] arg0,
                    int len)
             throws java.io.IOException

Specified by:

send in class AbstractAnonChannel

Throws:

java.io.IOException

internalClose

private void internalClose()

Close this channel (called from inside the class) but respecting the doNotCloseOnError flag!

close

public void close()

Description copied from interface: AnonChannel

Closes the channel and releases all resources used.

Specified by:

close in interface AnonChannel

Overrides:

close in class AbstractAnonChannel

isClosed

public boolean isClosed()

Description copied from interface: AnonChannel

Returns if the channel is already closed, i.e. no data can be sent / recieved any more on this channel.

Specified by:

isClosed in interface AnonChannel

Overrides:

isClosed in class AbstractAnonChannel

Returns:

true, if the channel is already closed

closedByPeer

public void closedByPeer()

Overrides:

closedByPeer in class AbstractAnonChannel

close_impl

protected void close_impl()

Specified by:

close_impl in class AbstractAnonChannel

setDoNotCloseChannelOnErrorDuringConnect

protected void setDoNotCloseChannelOnErrorDuringConnect(boolean b)

connect

protected boolean connect(java.lang.String addr,
                          int port)

connects to a host over the Tor network

Parameters:

addr - address

port - port

Throws:

java.net.ConnectException

dispatchCell

public int dispatchCell(RelayCell cell)

dispatches the cells to the outputstream

Parameters:

cell - cell

isClosedByPeer

public boolean isClosedByPeer()

gets if the connection was closed by peer

Returns: