[Tails-dev] Dynamically changing ISO URL in DAVE

Giorgio Maone giorgio at maone.net
Sat Feb 13 14:23:00 CET 2016

On 13/02/2016 13:49, sajolida wrote:
> intrigeri:
>>> Beside that, I think the JSON should be fetched every time the UI page
>>> is reloaded (of course obeying to server-side caching directives), just
>>> like we currently do with the IDF.
>> I'm afraid I don't know under which circumstances the UI page is
>> reloaded, so I lack the background info to integrate this proposal
>> into my mental representation of the problem.
>> @sajolida + @Giorgio: is this done as part of the Installation
>> Assistant or DAVE course of operation, or only due to external factors
>> (e.g. the user manually reloading the page, or restarting their
>> browser)?
> I *think* that Giorgio is only referring to a possible manual refresh
> from the user. Keep in mind that DAVE is supposed to follow up on
> download in the background and a user coming back to the download page
> after possibly closing the tab, or to survive a manual page refresh or
> browser restart.
Whenever a page matching the pattern for a possible UI page (i.e.
"https://tails.boum.org/*"), DAVE currently fetches the IDF. This is
basically the only way to fix https://labs.riseup.net/code/issues/10685,
as noted in https://labs.riseup.net/code/issues/10685#note-5

Of course you can and should limit the actual network activity by
properly using Chache-Control and/or ETag headers.

The same should apply to mirrors, if you want to keep them up-to-date.

Giorgio Maone

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