Re: Local Storage Not Retaining Data Between Local Browser Sessions

On Mon, Nov 29, 2010 at 1:55 PM, Adam Barth <> wrote:
> On Sun, Nov 28, 2010 at 10:11 PM, Jonas Sicking <> wrote:
>> On Sun, Nov 28, 2010 at 11:25 AM, Ronald Lane <> wrote:
>>> We would like to develop a system (javascript) to run on a local browser. We
>>> would like to make use of local storage however in testing this out we see
>>> that when running the app from a server local storage works fine but when
>>> running the app locally it fails to retain the data between sessions.
>>> Is this an intended function?
>> This is really a problem with the file: protocol rather than a problem
>> with localStorage. localStorage works on the basis of origin, a
>> concept which is defined for protocols like http: and https:, however
>> I believe so far has not been defined for file:. I'd recommend talking
>> with the IETF, though I wouldn't get my hopes up as it's really a very
>> hard problem to solve unfortunately.
> Yeah, we've basically punted on the origin of file URLs in IETF-land.

The only decent solution I've been able to think of is to make it
possible to configure a browser to tell it that a given local
directory constitutes a "site" and that all files in that directory
(and its sub-directories) are same-origin.

A solution like that is likely out of scope for IETF. The best way to
pursue a solution like that is to start talking to individual browser
vendors directly.

/ Jonas

Received on Monday, 29 November 2010 22:04:38 UTC