+0 for dropping agent detection (3)
-1 for adding a dependency to an external library

Sven

Am 3. April 2018 16:34:15 MESZ schrieb Maxim Solodovnik <solomax...@gmail.com>:
>It seems the discussion is spread between this thread and the JIRA
>https://issues.apache.org/jira/browse/WICKET-6544?focusedCommentId=16423835&page=com.atlassian.jira.plugin.system.issuetabpanels%3Acomment-tabpanel#comment-16423835
>
>As far as I can see we don't have consensus if this feature should
>1) remain as is (drop PR)
>2) be improved (merge PR and/or enhance detection)
>3) browser detection should be dropped?
>
>I would vote for option 2+ :)
>
>On Mon, Apr 2, 2018 at 5:11 AM, Martin Grigorov <mgrigo...@apache.org>
>wrote:
>
>> On Thu, Mar 29, 2018 at 1:31 AM, Korbinian Bachl <
>> korbinian.ba...@whiskyworld.de> wrote:
>>
>> >
>> >
>> > ----- Ursprüngliche Mail -----
>> > >> even in 2009 it was considered bad:
>https://www.sitepoint.com/why-
>> > >> browser-sniffing-stinks/
>> > >> and in case that is not enough, read what the guy that invented
>> > modernizr
>> > >> has to say:
>> > >> http://farukat.es/journal/2011/02/499-lest-we-forget-or-
>> > >> how-i-learned-whats-so-bad-about-browser-sniffing/
>> > >>
>> > >>
>> > > I do not trust anyone who says "don't do it this way" but doesn't
>say
>> how
>> > > to do it!
>> > >
>> > > There are several of "if (isBrowserX()) {...} else {...}" in
>Wicket JS
>> > code
>> > > and they served well for the last decade.
>> > > Since there are several other *Java* libraries for user agent
>detection
>> > > this means that someone still finds them useful despite what
>other
>> people
>> > > claim.
>> >
>> > unreliable things wont get reliably by pointing into the past and
>then
>> > telling that your fater did it the same way....
>> >
>> > nowadays you would use feature detection, see:
>> >
>> > https://developer.mozilla.org/en-US/docs/Learn/Tools_and_
>> > testing/Cross_browser_testing/Feature_detection
>>
>>
>> Korbinian,
>>
>> The PR by Maxim is about the User-Agent detection at the *server*
>side,
>> i.e. in the *Java* code. It reads the request header and tells you
>what the
>> browser is.
>> The JS feature detection is only client side. You will need Ajax
>behaviors
>> to send the ourcome to the server to be able to use it there. Wicket
>does
>> this with (Web)ClientInfo related classes.
>>
>> I'll be VERY glad to see your PR that uses modern ways to redo the
>current
>> checks in wicket-ajax.js or in the server code, e.g. Wicket Bootstrap
>uses
>> this information to decide whether to render respond.js!
>> Until then please do not make such bold statements. It is easy to
>read an
>> article and say "this is the [new] silver bullet". Until you get your
>hands
>> dirty you never know what kind of problems you will face!
>>
>>
>> >
>> >
>> > >
>> > >
>> > >> btw:
>> > >> https://github.com/HaraldWalker/user-agent-utils -> this is EOL,
>> guess
>> > >> why...
>> > >> https://github.com/pieroxy/java-user-agent-detection/releases ->
>last
>> > >> release from september 2017...
>> > >>
>> > >>
>> > > Sep 2017 is like yesterday
>> >
>> > (all only MAJOR releases!)
>> >
>> > 28. September 2017 - Firefox 56
>> > 14. November 2017 - Firefox 57 Quantum
>> > 23. Januar 2018 - Firefox 58
>> > 13. März 2018 - Firefox 59
>> >
>> > 2017-09-05 - Chrome 61.0.3163
>> > 2017-10-17 - Chrome 62.0.3202
>> > 2017-12-05 - Chrome 63.0.3239
>> > 2018-01-23 - Chrome 64.0.3282
>> > 2018-03-06 - Chrome 65.0.3325
>> >
>> > and this is just 2 desktop ones! I dont want to talk about the
>loads of
>> > updates my android device got in that time (firefox mobile, chrome
>and
>> > samsung internet!) - oh, and btw: they still lie about the user
>agent all
>> > time.... dont get me wrong, but sep 17 is freaking old in case you
>need
>> to
>> > reliably detect the browser!
>> >
>>
>> Yes, and all of them are properly parsed by the same code that has
>been
>> used in the last decade!
>> The browser vendors have no reason to change their syntax of user
>agent.
>> Believe me they do know that this piece of information *is being*
>used in
>> the wild!
>>
>
>
>
>-- 
>WBR
>Maxim aka solomax

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