I have created an application for receiving and sending fies. I am basically using the following code to uplaod a file:
// Create the file transfer manager
FileTransferManager manager = new FileTransferManager(connection);
// Create the outgoing file transfer
OutgoingFileTransfer transfer = manager.createOutgoingFileTransfer("email@example.com");
// Send the file
transfer.sendFile(new File(“shakespeare_complete_works.txt”), “You won’t believe this!”)
the upload starts and after the “negotiating transfer” status an “error” status is received and the upload is stopped. FYI From another application (“Gajim”) im able to receive files with ease.