Browser.sessionstore.privacy level: Difference between revisions

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(remove the 'recomended' section, it's nonsensical. Add another explanation of privacy_level vs .._deferred)
 
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==Background==
==Background==
Firefox 2.0 introduces a built-in [http://wiki.mozilla.org/Session_Restore Session Restore] feature, allowing the user to continue browsing from where they left off if browser restarts. This preference controls when to store extra information about a session: contents of forms, scrollbar positions, cookies, and POST data.
Firefox 2.0 introduces a built-in [[Session Restore]] feature, allowing the user to continue browsing from where they left off if browser restarts. This preference controls when to store extra information about a session: contents of forms, scrollbar positions, cookies, and POST data.


==Possible values and their effects==
==Possible values and their effects==
===0===
===0===
Store extra session data for any site.
Store extra session data for any site. (Default starting with Firefox 4.)
===1===
===1===
Store extra session data for unencrypted (non-HTTPS) sites only. (Default)
Store extra session data for unencrypted (non-HTTPS) sites only. (Default before Firefox 4.)
===2===
===2===
Never store extra session data.
Never store extra session data.
==Recommended settings==
Leaving this preference set to 1 will avoid re-submitting data to secure sites — such as banks and online stores — and prevents duplicate transactions from taking place. Use caution when setting this preference to 0.


==First checked in==
==First checked in==
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==Related bugs==
==Related bugs==
* [https://bugzilla.mozilla.org/show_bug.cgi?id=328159 Bug 328159 - Wire up the Session-data Service]
* [https://bugzilla.mozilla.org/show_bug.cgi?id=328159 Bug 328159 - Wire up the Session-data Service]
* [https://bugzilla.mozilla.org/show_bug.cgi?id=424872 Bug 424872 - Support form restore for securely transmitted site (HTTPS)] - changed the default for Firefox 4.


==Related preferences==
==Related preferences==
* [[browser.sessionstore.postdata]]
* [[browser.sessionstore.postdata]]
* [[browser.sessionstore.privacy_level_deferred]] (new in Firefox 4) - controls what gets saved by [[Session Restore]] when quitting (not crashing or restarting to install updates/addons) with [[browser.startup.page]] *not* set to restore previous session on startup. The possible values for this preference are the same as described on this page, but the default is '1' (session data stored for non-HTTPS pages only). See also: [http://blog.zpao.com/post/1099464627/restore-previous-session zpao's blog post] (note that the information about the default values in that post is outdated) and [https://bugzilla.mozilla.org/show_bug.cgi?id=627472#c5 this bugzilla comment].
==External links==
* [http://wiki.mozilla.org/Session_Restore Session Restore - MozillaWiki]


[[Category:Preferences]]
[[Category:Preferences]]
[[Category:Security and privacy-related preferences]]

Latest revision as of 21:33, 3 February 2011

Background

Firefox 2.0 introduces a built-in Session Restore feature, allowing the user to continue browsing from where they left off if browser restarts. This preference controls when to store extra information about a session: contents of forms, scrollbar positions, cookies, and POST data.

Possible values and their effects

0

Store extra session data for any site. (Default starting with Firefox 4.)

1

Store extra session data for unencrypted (non-HTTPS) sites only. (Default before Firefox 4.)

2

Never store extra session data.

First checked in

Has an effect in

  • Mozilla Firefox (nightly builds since 2006-04-26; 2.0)

Related bugs

Related preferences

External links