if (response.getHttpStatusCode() == 200) {
                logger.info("Flushed config files.");
            } else {
                logger.warn("Failed to flush config files.");
            }
        } catch (final Exception e) {
            logger.warn("Failed to flush config files.", e);
        }
    }

            int len;
            int amount = 0;
            while ((len = in.read(buf)) != -1) {
                out.write(buf, 0, len);
                amount += len;
            }
            out.flush();
            return amount;
        } catch (final IOException e) {
            throw new IORuntimeException(e);
        }
    }

    /**
     * ファイル入力ストリームの内容を出力ストリームにコピーします。
     * <p>

                buf.append(t.getMessage());
            }
            try (final StringWriter sw = new StringWriter(); final PrintWriter pw = new PrintWriter(sw)) {
                t.printStackTrace(pw);
                pw.flush();
                buf.append(" [ ").append(sw.toString()).append(" ]");
            } catch (final IOException ignore) {}
            return buf.toString();
        };
        final String message;

        if ( log.isTraceEnabled() ) {
            log.trace(req.toString());
            log.trace(Hexdump.toHexString(this.sbuf, 4, n));
        }

        this.out.write(this.sbuf, 0, 4 + n);
        this.out.flush();
        log.trace("Wrote negotiate request");
        return n;
    }


    /**
     * @throws SocketException
     * @throws IOException
     */