*   domainName = InternetDomainName.from(name);
   * } catch (IllegalArgumentException e) {
   *   domainName = DEFAULT_DOMAIN;
   * }
   * }
   *
   * @since 8.0 (previously named {@code isValidLenient})
   */
  public static boolean isValid(String name) {
    try {
      InternetDomainName unused = from(name);
      return true;
    } catch (IllegalArgumentException e) {
      return false;
    }
  }

        if (executorService != null) {
            try {
                executorService.shutdown();
                executorService.awaitTermination(60, TimeUnit.SECONDS);
            } catch (final InterruptedException e) {
                if (logger.isDebugEnabled()) {
                    logger.debug("Interrupted.", e);
                }
            } finally {
                executorService.shutdownNow();

            if (CharUtil.isUrlChar(c)) {
                buf.append(c);
            } else {
                try {
                    buf.append(URLEncoder.encode(String.valueOf(c), enc));
                } catch (final UnsupportedEncodingException e) {
                    buf.append(c);
                }
            }
        }
        return buf.toString();
    }

            try {
                processHelper.sendCommand(entity.getSessionId(), Constants.CRAWLER_PROCESS_COMMAND_THREAD_DUMP);
                saveInfo(messages -> messages.addSuccessPrintThreadDump(GLOBAL));
            } catch (final Exception e) {
                logger.warn("Failed to print a thread dump.", e);
                throwValidationError(messages -> messages.addErrorsFailedToPrintThreadDump(GLOBAL), this::asListHtml);
            }

            result.setCreatedAt(toLocalDateTime(source.get("createdAt")));
            result.setUpdatedAt(toLocalDateTime(source.get("updatedAt")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

            result.setKey(DfTypeUtil.toString(source.get("key")));
            result.setValue(DfTypeUtil.toString(source.get("value")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

            result.setUpdatedTime(DfTypeUtil.toLong(source.get("updatedTime")));
            result.setValue(DfTypeUtil.toString(source.get("value")));
            return updateEntity(source, result);
        } catch (InstantiationException | IllegalAccessException e) {
            final String msg = "Cannot create a new instance: " + entityType.getName();
            throw new IllegalBehaviorStateException(msg, e);
        }
    }

                if (len > 0 && src[srcIndex + len - 1] == '\0') {
                    len--;
                }
                str = new String(src, srcIndex, len, SmbConstants.OEM_ENCODING);
            }
        } catch (final UnsupportedEncodingException uee) {
            if (LogStream.level > 1) {
                uee.printStackTrace(log);
            }
        }
        return str;
    }

    @Override

When a WebSocket connection is closed, the `await websocket.receive_text()` will raise a `WebSocketDisconnect` exception, which you can then catch and handle like in this example.

{* ../../docs_src/websockets/tutorial003_py39.py hl[79:81] *}

To try it out:

* Open the app with several browser tabs.
* Write messages from them.

        ComponentUtil.register(new DataSerializer(), "dataSerializer");
    }

    private String encodeUrl(final String url) {
        try {
            return URLEncoder.encode(url, Constants.UTF_8);
        } catch (final UnsupportedEncodingException e) {
            throw new FessSystemException("Unsupported encoding.", e);
        }
    }

    public void test_decodeUrl_ok() throws Exception {
        String url, exp;