What are the headers required in URL? - WAP

What are the headers required in URL?

There are four headers required in URL:

- Expires: Mon, 01 Jan 1999 12:00:00 GMT: this is used to inform the WAP device about the expiry of the deck and it sets the date that was given in the past.

- The code that is being written also gets expired and removed as soon as the application gets shut down.

- Last-Modified: 01 July 2000 12:00:00 GMT: this is used to inform about the date of the deck that was modified before.

- It can be used to replace with the valid date and the time values that is being defined using the programming environment.

- Cache-Control: no-cache, must-revalidate: this provides an HTTP header used for the caching of the page and it is used to store the version of the HTTP header of the server.

- Pragma: no-cache