# Package org.zkoss.zk.au.http

- Interface Summary
  Interface | Description
  --- | ---
  AuExtension | An AU service is a small Java program that can be plugged into `DHtmlUpdateServlet` to extend its functionality.
  AuExtensionRequest | Represents a request for an AU extension (`AuExtension`).

- Class Summary
  Class | Description
  --- | ---
  AuDynaMediar | The AU processor used to response the content for `DynamicMedia.getMedia(java.lang.String)`
  AuMultipartUploader | An AU handler to process multipart content.
  AuRedirect | The AU processor to handle the HTTP redirect via status 302.
  DHtmlResourceServlet | Used to receive ZK resource from the server
  DHtmlUpdateServlet | Used to receive command from the server and send result back to client.
  HttpAuWriter | The writer used to write the output back to the client.
  TimeZoneDataBaseVersionChecker | Utilities to check whether JDK and moment.js's time zone database version matched.