len -= rspx.count;
                off += rspx.count;
            } else {
                req.setParam( file.fid, fp, len - w, b, off, w );
                fp += rsp.count;
                len -= rsp.count;
                off += rsp.count;
                file.send( req, rsp );
            }
        } while( len > 0 );
    }

                        log.trace(String.format("Wrote at %d remain %d off %d len %d", this.fp, len - w, off, w));
                    }
                    this.req.setParam(fh.getFid(), this.fp, len - w, b, off, w);
                    th.send(this.req, this.rsp);
                    long cnt = this.rsp.getCount();
                    this.fp += cnt;
                    len -= cnt;
                    off += cnt;