w.setDaemon(true);

            try {
                w.start();
                // use commonly acceptable buffer size
                int bsize = Math.min(sh.getReceiveBufferSize() - 70, dh.getSendBufferSize() - 70);
                byte[][] b = new byte[2][bsize];
                copyRecursive(dest, b, bsize, w, sh, dh);
            }
            finally {
                w.write(null, -1, null);