client.setTrustAllCertificates(true);  // For testing only
});
```

### Debug Logging

Enable debug logging by adding to your logging configuration:

```xml
<logger name="org.codelibs.fess.crawler" level="DEBUG"/>
<logger name="org.codelibs.fess.crawler.client" level="DEBUG"/>
<logger name="org.codelibs.fess.crawler.extractor" level="DEBUG"/>
```

### Monitoring

```java
// Monitor crawling progress

      init {
        val platformSystemProperty = getPlatformSystemProperty()

        if (platformSystemProperty == JDK9_PROPERTY) {
          if (System.getProperty("javax.net.debug") == null) {
            System.setProperty("javax.net.debug", "")
          }
        } else if (platformSystemProperty == CONSCRYPT_PROPERTY) {
          if (Security.getProviders()[0].name != "Conscrypt") {
            if (!Conscrypt.isAvailable()) {

// binaries on the iOS Simulator using the XCode toolchain.
package main

import (
	"fmt"
	"go/build"
	"log"
	"os"
	"os/exec"
	"path/filepath"
	"runtime"
	"strings"
	"syscall"
)

const debug = false

var tmpdir string

var (
	devID    string
	appID    string
	teamID   string
	bundleID string
	deviceID string
)

// lock is a file lock to serialize iOS runs. It is global to avoid the

     * Sets up the Fess configuration and data serializer components.
     */
    @PostConstruct
    public void init() {
        if (logger.isDebugEnabled()) {
            logger.debug("Initializing {}", this.getClass().getSimpleName());
        }
        fessConfig = ComponentUtil.getFessConfig();
        dataSerializer = ComponentUtil.getComponent("dataSerializer");
    }

    /**

        Response response = checkMethodBase(body).get(getApiPath() + "/" + path);
        // logger.debug(response.asString());
        return response;
    }

    protected Response checkPostMethod(final Map<String, Object> body, final String path) {
        Response response = checkMethodBase(body).post(getApiPath() + "/" + path);
        // logger.debug(response.asString());
        return response;
    }

private val LogRecord.androidLevel: Int
  get() =
    when {
      level.intValue() > Level.INFO.intValue() -> Log.WARN
      level.intValue() == Level.INFO.intValue() -> Log.INFO
      else -> Log.DEBUG
    }

object AndroidLogHandler : Handler() {
  override fun publish(record: LogRecord) {
    androidLog(record.loggerName, record.androidLevel, record.message, record.thrown)
  }

  override fun flush() {
  }

        if (logger.isDebugEnabled()) {
            logger.debug("loading {}", componentName);
        }
        try (CrawlerClient client = crawlerContainer.getComponent(componentName)) {
            crawlerClientFactory.addClient(regex, client);
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to create {}.", componentName, e);
            } else {

                    DependencyGraphDumper.defaultsWith(
                            List.of(DependencyGraphDumper.artifactProperties(List.of(ArtifactProperties.TYPE))))));
            logger.debug("TYPES: Before transform:\n {}", sb);
        }
        root.accept(new TypeDeriverVisitor(registry));
        @SuppressWarnings("unchecked")

// Code generated by "stringer -type=debugMsg debug.go"; DO NOT EDIT.

package grid

import "strconv"

func _() {
	// An "invalid array index" compiler error signifies that the constant values have changed.
	// Re-run the stringer command to generate them again.
	var x [1]struct{}
	_ = x[debugShutdown-0]
	_ = x[debugKillInbound-1]
	_ = x[debugKillOutbound-2]
	_ = x[debugWaitForExit-3]
	_ = x[debugSetConnPingDuration-4]

            return new SuggestIndexResponse(items.length, documents.length, response.getErrors(), indexTime - start);
        } catch (final Exception e) {
            if (logger.isDebugEnabled()) {
                logger.debug("Failed to index from documents: index={}, documentCount={}", index, documents.length, e);
            }