buf.setIndex(0);
                securityProvider.wrap(buf);
            }

            tot = buf.getLength() - 24;
            off = 0;

            while (off < tot) {
                n = tot - off;

                if (24 + n > max_xmit) {
                    msg.flags &= ~DCERPC_LAST_FRAG;
                    n = max_xmit - 24;
                } else {

     * @param out
     * @param buf
     * @param off
     * @param tot
     * @return
     * @throws IOException
     */
    private int sendFragments(final DcerpcMessage msg, final byte[] out, final NdrBuffer buf) throws IOException {
        int off = 0;
        final int tot = buf.getLength() - 24;
        while (off < tot) {
            int fragSize = tot - off;
            if (24 + fragSize > this.max_xmit) {