Topic: Identificativo build Firefox 4 b8

[jooliaan]

Mi lascia un po' perplesso la stringa identificativa della build beta 8 prossima al rilascio in questi giorni

Mozilla/5.0 (Windows NT 5.1; rv:2.0b8) Gecko/20100101 Firefox/4.0b8

[Godai71]

L'identificativo non è strano con la Nightly

Mozilla/5.0 (Windows NT 5.1; rv:2.0b9pre) Gecko/20101221 Firefox/4.0b9pre

[jooliaan]

Ecco qui:

[jooliaan]

Stesso problema anche con fx4b8 en-US

[Godai71]

Giusto per la cronaca è uguale a quello della beta 7

Mozilla/5.0 (Windows NT 6.0; rv:2.0b7) Gecko/20100101 Firefox/4.0b7

ed è giusto sia così

https://developer.mozilla.org/En/Firefox_User_Agent_String_Reference

[jooliaan]

E  hai ragione tu Stefano!

Infatti qui: http://hacks.mozilla.org/2010/09/final-user-agent-string-for-firefox-4/ viene spiegato un po' meglio:

6) The Gecko build date in the “Gecko/yyyymmdd” token has been frozen to 20100101 for Firefox releases. This means:

    * If you want to detect whether the browser is genuine Gecko, search for the strings “Gecko” and “rv:”. The presence of these two strings will distinguish Gecko from browsers who state they are “like Gecko” in the UA string.
    * If you want to determine the Gecko version, first — as noted above — consider carefully whether you can feature-sniff instead. If you must, obtain it from the “rv:x.y.z” string.

If you are presently using the build date or otherwise depending on the exact format of the “Gecko/yyyymmdd” token, stop! In the next major release of Gecko, this will be replaced by the string “Gecko/”. If you rely on the fact that this will be followed by a date string, you will break.

For testing purposes, the unfrozen build date is still included in nightly builds of Firefox, but it will be removed in future nightly builds.