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A method to improve content availability when mobile device is offline Disclosure Number: IPCOM000244453D
Publication Date: 2015-Dec-13
Document File: 2 page(s) / 50K

Publishing Venue

The Prior Art Database


This is a solution to help user keep browseing APP/websites by DNS hijacking method.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 67% of the total text.

Page 01 of 2

A method to improve content availability when mobile device is offline

Most of the applications in mobile devices need internet access.Intermittent network availability is a big obstacle for these applications. One solution is to offer a offline feature at application level, but it needs the effort of app development team.

This invention discloses a method to solve the intermittent network issue at OS level. It caches the server side information when the network is stable. When there is no connection to the network, the invention will start local servers using the cached content, then use DNS hijack method to allow apps to interact with local servers.

This invention also auto detects which apps need the cache mechanism. And based on the auto defected result, user can further customize whether certain app needs the cache or not.


The method is in OS level, so there is no need for individual app to develop the offline features. The support is cross applications.

DNS hijacking is the practice of subverting the resolution of Domain Name System (DNS) queries. This can be achieved by overriding a computer's TCP/IP configuration to point at a rogue DNS server.

The proposed idea is to use this technique to redirect the offline URL to a pre-stored local web pages. The online and offline requesting URL behavior will be like this:


Page 02 of 2

How to decide whether an app needs the cache mechanism or not?

The invention will observe the behavior of apps when the...