Package org.jivesoftware.smackx.filetransfer

Class IBBTransferNegotiator

java.lang.Object

org.jivesoftware.smack.Manager

org.jivesoftware.smackx.filetransfer.StreamNegotiator

org.jivesoftware.smackx.filetransfer.IBBTransferNegotiator

public class IBBTransferNegotiator
extends StreamNegotiator

The In-Band Bytestream file transfer method, or IBB for short, transfers the file over the same XML Stream used by XMPP. It is the fall-back mechanism in case the SOCKS5 bytestream method of transferring files is not available.

See Also:

• XEP-0047: In-Band Bytestreams (IBB)

Field Summary

Fields inherited from class org.jivesoftware.smackx.filetransfer.StreamNegotiator

initationSetEvents

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	IBBTransferNegotiator(XMPPConnection connection)	The default constructor for the In-Band Bytestream Negotiator.

Method Summary

Modifier and Type	Method	Description
InputStream	createIncomingStream(StreamInitiation initiation)	This method handles the file stream download negotiation process.
OutputStream	createOutgoingStream(String streamID, Jid initiator, Jid target)	This method handles the file upload stream negotiation process.
String	getNamespace()	Returns the XMPP namespace reserved for this particular type of file transfer.
void	newStreamInitiation(Jid from, String streamID)	Signal that a new stream initiation arrived.

Methods inherited from class org.jivesoftware.smackx.filetransfer.StreamNegotiator

createInitiationAccept, initiateIncomingStream, signal

Methods inherited from class org.jivesoftware.smack.Manager

connection, getAuthenticatedConnectionOrThrow, schedule, schedule, scheduleBlocking

Methods inherited from class java.lang.Object

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

Constructor Details

IBBTransferNegotiator

protected IBBTransferNegotiator(XMPPConnection connection)

The default constructor for the In-Band Bytestream Negotiator.

Parameters:

connection - The connection which this negotiator works on.

Method Details

createOutgoingStream

public OutputStream createOutgoingStream(String streamID,
 Jid initiator,
 Jid target)
                                  throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Description copied from class: StreamNegotiator

This method handles the file upload stream negotiation process. The particular stream negotiator is determined during the file transfer negotiation process. This method returns the OutputStream to transmit the file to the remote user.

Specified by:

createOutgoingStream in class StreamNegotiator

Parameters:

streamID - The streamID that uniquely identifies the file transfer.

initiator - The fully-qualified JID of the initiator of the file transfer.

target - The fully-qualified JID of the target or receiver of the file transfer.

Returns:

The negotiated stream ready for data.

Throws:

InterruptedException - if the calling thread was interrupted.

SmackException.NoResponseException

XMPPException.XMPPErrorException

SmackException.NotConnectedException

createIncomingStream

public InputStream createIncomingStream(StreamInitiation initiation)
                                 throws SmackException.NoResponseException,
XMPPException.XMPPErrorException,
SmackException.NotConnectedException,
InterruptedException

Description copied from class: StreamNegotiator

This method handles the file stream download negotiation process. The appropriate stream negotiator's initiate incoming stream is called after an appropriate file transfer method is selected. The manager will respond to the initiator with the selected means of transfer, then it will handle any negotiation specific to the particular transfer method. This method returns the InputStream, ready to transfer the file.

Specified by:

createIncomingStream in class StreamNegotiator

Parameters:

initiation - The initiation that triggered this download.

Returns:

After the negotiation process is complete, the InputStream to write a file to is returned.

Throws:

XMPPException.XMPPErrorException - If an error occurs during this process an XMPPException is thrown.

InterruptedException - If thread is interrupted.

SmackException.NoResponseException

SmackException.NotConnectedException

newStreamInitiation

public void newStreamInitiation(Jid from,
 String streamID)

Description copied from class: StreamNegotiator

Signal that a new stream initiation arrived. The negotiator may needs to prepare for it.

Specified by:

newStreamInitiation in class StreamNegotiator

Parameters:

from - The initiator of the file transfer.

streamID - The stream ID related to the transfer.

getNamespace

public String getNamespace()

Description copied from class: StreamNegotiator

Returns the XMPP namespace reserved for this particular type of file transfer.

Specified by:

getNamespace in class StreamNegotiator

Returns:

Returns the XMPP namespace reserved for this particular type of file transfer.