return true;
        }
        return getNegotiateResponse().isSigningRequired();
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbTransport#unwrap(java.lang.Class)
     */
    @SuppressWarnings ( "unchecked" )
    @Override
    public <T extends SmbTransport> T unwrap ( Class<T> type ) {
        if ( type.isAssignableFrom(this.getClass()) ) {
            return (T) this;

     */
    public SmbTreeHandle getTreeHandle () throws CIFSException {
        return ensureTreeConnected();
    }


    /**
     * {@inheritDoc}
     *
     * @see java.lang.AutoCloseable#close()
     */
    @Override
    public synchronized void close () {
        SmbTreeHandleImpl th = this.treeHandle;
        if ( th != null ) {
            this.treeHandle = null;