File Transfer not working smack 4.1 android

Question

Currently I am playing around with the new Smack 4.1 that offers full support for android. Sending and receiving messages is no problem, works fine. But now, I get stuck on

Answer 1

I got it after very research.

FileTransferManager ftm1 = FileTransferManager.getInstanceFor(connection);
    FileTransferManager ftm2 = FileTransferManager.getInstanceFor(connection2);

    ftm2.addFileTransferListener(new FileTransferListener() {
        @Override
        public void fileTransferRequest(FileTransferRequest request) {
            IncomingFileTransfer ift = request.accept();
            try {
                InputStream is = ift.recieveFile();
                ByteArrayOutputStream os = new ByteArrayOutputStream();
                int nRead;
                byte[] buf = new byte[1024];
                while ((nRead = is.read(buf,  0, buf.length)) != -1) {
                    os.write(buf, 0, nRead);
                }
                os.flush();
                dataReceived = os.toByteArray();
            } catch (SmackException | IOException | XMPPErrorException e) {
                e.printStackTrace();
            }
            if (Arrays.equals(dataToSend, dataReceived)) {
                System.out.println("Received data matches send data. \\o/");
            } else {
                System.err.println("Recieved data DOES NOT match send data. :(");
            }
        }
    });

    OutgoingFileTransfer oft = ftm1.createOutgoingFileTransfer(XmppStringUtils.completeJidFrom(USER, SERV, "resourse"));
    oft.sendStream(new ByteArrayInputStream(dataToSend), "hello.txt", dataToSend.length, "A greeting");
    outerloop: while (!oft.isDone()) {
        switch (oft.getStatus()) {
        case error:
            System.out.println("Filetransfer error: " + oft.getError());
            break outerloop;
        default:
            System.out.println("Filetransfer status: " + oft.getStatus() + ". Progress: " + oft.getProgress());
            break;
        }
        Thread.sleep(1000);
    }

    connection.disconnect();
    connection2.disconnect();
    Thread.sleep(1000);
}

the one connection is sending file and another connection is receiving this is working code.

Answer 2

I had same problem, I investigated the stanza and solved it this way.

Many people use "/Smack" or "/Resource" as resource part in jid, but that can be done another way.

Resource path is changing with every presence changed of user. Lets say we want to send image to this user: "user1@mydomain"

You must add "/Resource" or "/Smack" part to this jid and it become this: user1@mydomain/Resource

But resource path is changing with presence so you must follow every presence change to update resource path. Best way is to get user presence is in roster listener and in presencheChanged() method you get last user resource part like this:

Roster roster=getRoster();
roster.addRosterListener(new RosterListener() {
                @Override
                public void entriesAdded(Collection<Jid> addresses) {
                    Log.d("entriesAdded", "ug");
                    context.sendBroadcast(new Intent("ENTRIES_ADDED"));
                }

                @Override
                public void entriesUpdated(Collection<Jid> addresses) {
                    Log.d("entriesUpdated", "ug");
                }

                @Override
                public void entriesDeleted(Collection<Jid> addresses) {
                    Log.d("entriesDeleted", "ug");
                }

                @Override
                public void presenceChanged(Presence presence) {
                    Log.d("presenceChanged", "ug");
                    //Resource from presence
                    String resource = presence.getFrom().getResourceOrEmpty().toString();
                    //Update resource part for user in DB or preferences
                    //...
                }
            });
}

Resource string will be some generated string like "6u1613j3kv" and jid will become: user1@mydomain/6u1613j3kv

That means that you must create your outgoing transfer like this:

EntityFullJid jid = JidCreate.entityFullFrom("user1@mydomain/6u1613j3kv"); 
OutgoingFileTransfer transfer = manager.createOutgoingFileTransfer(jid)

In your case this resource part is "mobile". Just change it with resource part from presence in roster listener.

And that is how i have solved my problem with file transfer on smack and Openfire.

Also to mention you must add following properties in your Openfire server:

xmpp.proxy.enabled - true
xmpp.proxy.externalip - MY_IP_ADDRESS
xmpp.proxy.port -7777

Just to mention, I am using Openfire 4.0.2 and Smack 4.2.2.

Also this can be configured the easy way, just set the resource on

XMPPTCPConnectionConfiguration.Builder .

like

XMPPTCPConnectionConfiguration.Builder configurationBuilder = 
XMPPTCPConnectionConfiguration.builder(); 

configurationBuilder.setResource("yourResourceName");