return this.ctx.getConfig();
    }


    private synchronized SmbTreeImpl getTree () {
        SmbTreeImpl t = this.tree;
        if ( t != null ) {
            return t.acquire(false);
        }
        else if ( this.delegate != null ) {
            this.tree = this.delegate.getTree();
            return this.tree;
        }
        return t;
    }


    /**

        if ( len <= 0 ) {
            return 0;
        }
        long start = this.fp;

        try ( SmbFileHandleImpl fh = ensureOpen();
              SmbTreeHandleImpl th = fh.getTree() ) {

            int r, n;
            SmbComReadAndXResponse response = new SmbComReadAndXResponse(th.getConfig(), b, off);
            do {
                r = len > this.readSize ? this.readSize : len;

    @Override
    public int sendrecv ( byte[] buf, int off, int length, byte[] inB, int maxRecvSize ) throws IOException {
        try ( SmbFileHandleImpl fh = ensureOpen();
              SmbTreeHandleImpl th = fh.getTree() ) {

            if ( th.isSMB2() ) {
                Smb2IoctlRequest req = new Smb2IoctlRequest(th.getConfig(), Smb2IoctlRequest.FSCTL_PIPE_TRANSCEIVE, fh.getFileId(), inB);

        }

        if ( this.tmp == null ) {
            throw new IOException("Bad file descriptor");
        }

        try ( SmbFileHandleImpl fh = ensureOpen();
              SmbTreeHandleImpl th = fh.getTree() ) {
            if ( log.isDebugEnabled() ) {
                log.debug("write: fid=" + fh + ",off=" + off + ",len=" + len + ",fp=" +  this.fp);
            }

            int w;
            do {

            throw new IOException("Bad file descriptor");
        }
        // ensure file is open
        try ( SmbFileHandleImpl fd = ensureOpen();
              SmbTreeHandleImpl th = fd.getTree() ) {

            /*
             * Read AndX Request / Response
             */

            if ( log.isTraceEnabled() ) {
                log.trace("read: fid=" + fd + ",off=" + off + ",len=" + len);