How to use

WebAppLoaderFix

in

org.eclipse.jetty.util

public static void checkAndClose(ClassLoader classLoader)
{
  if (!isWindows() || !(classLoader instanceof URLClassLoader))
  {
    return;
  }
  HashSet<String> leakedJarNames = preClose((URLClassLoader)classLoader);
  cleanupJarFileFactory(leakedJarNames);
}

private static HashSet<String> preClose(URLClassLoader loader)
  Field f = getClassField(URLClassLoader.class, "ucp");
  if (f != null)
      f = getClassField(ucp.getClass(), "loaders");
      if (f != null)
          f = getClassField(obj.getClass(), "jar");
          if (f != null)

/**
 * Removes a Jetty handler to be added to the embedded web server that is used to expose BOSH (HTTP-bind)
 * functionality.
 *
 * Removing a handler, even when null, or non-existing, might have side-effects as introduced by the Jetty
 * implementation. At the time of writing, Jetty will re
 *
 * @param handler The handler (should not be null).
 */
public void removeJettyHandler( Handler handler )
{
  if (handler instanceof WebAppContext) {
    // A work-around of the Jetty bug described at https://github.com/eclipse/jetty.project/issues/1425
    // NOTE: According to some comments on WebAppLoaderFix, this may stop working on Java 9.
    // Hopefully the Jetty team will have fixed the underlying bug by then
    WebAppLoaderFix.checkAndClose(((WebAppContext) handler).getClassLoader());
  }
  extensionHandlers.removeHandler( handler );
  if ( handler.isStarted() )
  {
    try
    {
      handler.stop();
    }
    catch ( Exception e )
    {
      Log.warn( "Unable to stop the handler that was removed: {}", handler, e );
    }
  }
}

Field f = getClassField(classJarURLConnection, "factory");
f = getClassField(classJarFileFactory, "fileCache");
if (f == null)
f = getClassField(classJarFileFactory, "urlCache");
if (f == null)