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/*
* Copyright (c) 2010-2013 Isode Limited.
* All rights reserved.
* See the COPYING file for more information.
*/
/*
* Copyright (c) 2015 Tarun Gupta.
* Licensed under the simplified BSD license.
* See Documentation/Licenses/BSD-simplified.txt for more information.
*/
package com.isode.stroke.filetransfer;
import com.isode.stroke.signals.Signal1;
import com.isode.stroke.signals.Slot2;
import com.isode.stroke.signals.Slot;
import com.isode.stroke.jid.JID;
import com.isode.stroke.queries.IQRouter;
import com.isode.stroke.elements.IBB;
import com.isode.stroke.elements.ErrorPayload;
import com.isode.stroke.base.ByteArray;
public class IBBSendSession {
private String id = "";
private JID from = new JID();
private JID to = new JID();
private ReadBytestream bytestream;
private IQRouter router;
private int blockSize;
private int sequenceNumber;
private boolean active;
private boolean waitingForData;
public IBBSendSession(final String id, final JID from, final JID to, ReadBytestream bytestream, IQRouter router) {
this.id = id;
this.from = from;
this.to = to;
this.bytestream = bytestream;
this.router = router;
this.blockSize = 4096;
this.sequenceNumber = 0;
this.active = false;
this.waitingForData = false;
bytestream.onDataAvailable.connect(new Slot() {
@Override
public void call() {
handleDataAvailable();
}
});
}
public void start() {
IBBRequest request = IBBRequest.create(from, to, IBB.createIBBOpen(id, (int)(blockSize)), router);
request.onResponse.connect(new Slot2<IBB, ErrorPayload>() {
@Override
public void call(IBB b, ErrorPayload e) {
handleIBBResponse(b, e);
}
});
active = true;
request.send();
}
public void stop() {
if (active && router.isAvailable()) {
IBBRequest.create(from, to, IBB.createIBBClose(id), router).send();
}
finish(null);
}
public JID getSender() {
return from;
}
public JID getReceiver() {
return to;
}
public void setBlockSize(int blockSize) {
this.blockSize = blockSize;
}
public final Signal1<FileTransferError> onFinished = new Signal1<FileTransferError>();
public final Signal1<Integer> onBytesSent = new Signal1<Integer>();
private void handleIBBResponse(IBB ibb, ErrorPayload error) {
if (error == null && active) {
if (!bytestream.isFinished()) {
sendMoreData();
}
else {
finish(null);
}
}
else {
finish(new FileTransferError(FileTransferError.Type.PeerError));
}
}
private void finish(FileTransferError error) {
active = false;
onFinished.emit(error);
}
private void sendMoreData() {
//try {
ByteArray data = bytestream.read(blockSize);
if (!data.isEmpty()) {
waitingForData = false;
IBBRequest request = IBBRequest.create(from, to, IBB.createIBBData(id, sequenceNumber, data), router);
sequenceNumber++;
request.onResponse.connect(new Slot2<IBB, ErrorPayload>() {
@Override
public void call(IBB b, ErrorPayload e) {
handleIBBResponse(b, e);
}
});
request.send();
onBytesSent.emit(data.getSize());
}
else {
waitingForData = true;
}
//}
//catch (BytestreamException e) {
// finish(new FileTransferError(FileTransferError.Type.ReadError));
//}
}
private void handleDataAvailable() {
if (waitingForData) {
sendMoreData();
}
}
}
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Swift