if ((flags & 1) != 0) {
                    reqx.setParam(file.fid, fp, len, b, off, w);
                    reqx.writeMode = 0x8;
                } else {
                    reqx.writeMode = 0;
                }
                file.send(reqx, rspx);
                fp += rspx.count;
                len -= rspx.count;
                off += rspx.count;