t2.snd_buf_size = t1.snd_buf_size;
        } else {
            t1.snd_buf_size = t2.snd_buf_size;
        }

        bsize = Math.min(t1.rcv_buf_size - 70, t1.snd_buf_size - 70);
        b = new byte[2][bsize];

        try {
            copyTo0(dest, b, bsize, w, req, resp);
        } finally {
            w.write(null, -1, null, 0);
        }
    }

    /**

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