com.maverick.sshd.vtun
Class VTunForwardingChannel

java.lang.Object
  com.maverick.sshd.Channel
      com.maverick.sshd.tunnel.ForwardingChannel
          com.maverick.sshd.vtun.VTunForwardingChannel

All Implemented Interfaces:

com.maverick.ssh.components.SshComponent

Direct Known Subclasses:

VTunBoundForwardingChannel, VTunRemoteForwardingChannel

public abstract class VTunForwardingChannel
extends ForwardingChannel

Nested Class Summary

Nested classes/interfaces inherited from class com.maverick.sshd.Channel

Channel.QueuedData

Field Summary

Fields inherited from class com.maverick.sshd.tunnel.ForwardingChannel

hostToConnect, originatingHost, originatingPort, portToConnect

Fields inherited from class com.maverick.sshd.Channel

connection, localwindow, localWindowLock, state

Constructor Summary

VTunForwardingChannel(String channelType, int maximumPacketSize, int initialWindowSize)

Method Summary

void	bind(VTunForwardingChannel outputChannel)
protected byte[]	createChannel() Called when the channel is being created.
protected void	evaluateWindowSpace(long remaining) Called to evaluate the window space available.
protected abstract void	onChannelBind()
protected void	onChannelClosed() Called when the channel has been closed.
protected void	onChannelClosing() Called before the channel is closed
protected void	onChannelData(byte[] data) Called by the channel when data arrives from the remote side.
protected void	onChannelFree() This method is called when the channel has been closed and all its resources are no longer required.
protected void	onChannelOpen() Called when the channel has been opened - this method is only called when the remote side requests a channel open.
protected void	onChannelOpenConfirmation() Called when the channel has been confirmed as open by the remote side - this method is only called when the channel has been requested by this side of the connection
protected void	onChannelOpenFailure() Called when the remote side fails to open a channel in response to our request.
protected void	onChannelRequest(String type, boolean wantreply, byte[] requestdata) Called when a channel request is received.
protected void	onExtendedData(byte[] data, int type) Called by the channel when extended data arrives
protected void	onLocalEOF() Called when the local side is EOF.
protected void	onRemoteEOF() Called when the remote side reports its OutputStream as EOF.
protected byte[]	openChannel(byte[] requestdata) Called when the channel is being opened.

Methods inherited from class com.maverick.sshd.tunnel.ForwardingChannel

getHost, getInformation, getOriginatingHost, getOriginatingPort, getPort

Methods inherited from class com.maverick.sshd.Channel

addEventListener, addInputListener, addOutputListener, canClose, close, getConnection, getContext, getLocalId, getLocalPacket, getLocalWindow, getName, getQueueSize, getRemoteId, getRemotePacket, getRemoteWindow, getSessionIdentifier, hasQueuedData, idle, isClosed, isClosing, isEOF, isLocalEOF, isOpen, isRemoteEOF, onRemoteClose, onWindowAdjust, queueSize, registerExtendedData, removeEventListener, sendChannelData, sendChannelData, sendChannelRequest, sendEOF, sendExtendedData, sendRequestResponse, sendWindowAdjust

Methods inherited from class java.lang.Object

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

Constructor Detail

VTunForwardingChannel

public VTunForwardingChannel(String channelType,
                             int maximumPacketSize,
                             int initialWindowSize)

Method Detail

bind

public void bind(VTunForwardingChannel outputChannel)

onChannelBind

protected abstract void onChannelBind()

onChannelOpenFailure

protected void onChannelOpenFailure()

Description copied from class: Channel

Called when the remote side fails to open a channel in response to our request. It only makes sense for some channel types to override this method. A local forwarding channel will never receive this message for example.

Overrides:

onChannelOpenFailure in class Channel

onChannelClosed

protected void onChannelClosed()

Called when the channel has been closed.

Specified by:

onChannelClosed in class Channel

onChannelData

protected void onChannelData(byte[] data)

Called by the channel when data arrives from the remote side. This implementation simply checks that the bound channel is still open and sends its data through the channel.

Specified by:

onChannelData in class Channel

Parameters:

data - byte[]

onLocalEOF

protected void onLocalEOF()

Called when the local side is EOF. This will force the bound channel to be closed.

Specified by:

onLocalEOF in class Channel

onRemoteEOF

protected void onRemoteEOF()

Called when the remote side reports its OutputStream as EOF. This will set the bound channel to EOF but will not close the channel.

Specified by:

onRemoteEOF in class Channel

onExtendedData

protected void onExtendedData(byte[] data,
                              int type)

Description copied from class: Channel

Called by the channel when extended data arrives

Specified by:

onExtendedData in class Channel

onChannelFree

protected void onChannelFree()

Description copied from class: Channel

This method is called when the channel has been closed and all its resources are no longer required.

Specified by:

onChannelFree in class Channel

createChannel

protected byte[] createChannel()
                        throws IOException

Description copied from class: Channel

Called when the channel is being created. You can return data to be sent in the channel open request, or null for none.

Specified by:

createChannel in class Channel

Returns:

byte[]

Throws:

IOException

openChannel

protected byte[] openChannel(byte[] requestdata)
                      throws WriteOperationRequest,
                             com.maverick.ssh.ChannelOpenException

Description copied from class: Channel

Called when the channel is being opened. You can retrun data to be sent in the channel open confirmation message, or null for none.

Specified by:

openChannel in class Channel

Returns:

byte[]

Throws:

WriteOperationRequest

com.maverick.ssh.ChannelOpenException

onChannelOpenConfirmation

protected void onChannelOpenConfirmation()

Description copied from class: Channel

Called when the channel has been confirmed as open by the remote side - this method is only called when the channel has been requested by this side of the connection

Specified by:

onChannelOpenConfirmation in class Channel

onChannelOpen

protected void onChannelOpen()

Description copied from class: Channel

Called when the channel has been opened - this method is only called when the remote side requests a channel open.

Specified by:

onChannelOpen in class Channel

onChannelClosing

protected void onChannelClosing()

Description copied from class: Channel

Called before the channel is closed

Specified by:

onChannelClosing in class Channel

onChannelRequest

protected void onChannelRequest(String type,
                                boolean wantreply,
                                byte[] requestdata)

Description copied from class: Channel

Called when a channel request is received.

Specified by:

onChannelRequest in class Channel

evaluateWindowSpace

protected void evaluateWindowSpace(long remaining)

Description copied from class: Channel

Called to evaluate the window space available. Send a window adjust message if there if the minimum amount of space is not available.

Specified by:

evaluateWindowSpace in class Channel