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Re: JavaFX beginner issue

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On 2014-05-05 11:41 PM, Wayne wrote:
> On 5/5/2014 11:29 AM, Rhino wrote:
>> On 2014-05-05 1:53 AM, Wayne wrote:
>>>> Application Blocked by Security Settings
>>>>
>>>> Name: fxswingtest01.FxSwingTest01
>>>> Location: file://
>>>> Your security settings have blocked a self-signed application from running
>>>> =======================================================================
>>>>
>>>> What do I need to do to resolve this situation? I assume I need to give Java
>>>> permission to run this application but I'm not sure how or where to do it and the
>>>> tutorial I'm using didn't think to include this information....
>>>>
>>>
>>> You can set the security level to its lowest setting of "medium"
>>> in the Java control panel.  Or, also from the control panel,
>>> you can white-list various locations such as "http://localhost/",
>>> "https://localhost/", and "file:///".  (You will get warning when
>>> adding http or file protocol URLs, but you can ignore those for
>>> localhost.)
>>>
>>> Or you can obtain a signing certificate and sign your code.
>>>
>>
>> Thanks Wayne, I think we're heading in the right direction but I need some more
>> detail....
>>
>> I've tried adding all of these entries to the white-list in the Security tab of the
>> Java Control Panel:
>>
>> http://localhost/
>> https://localhost/
>> http://127.0.0.1/
>> https:/127.0.0.1/
>> file:///C:/Users/rhino_000/Documents/NetBeans/HelloWorld/dist/HelloWorld.html
>> file:///C:/Users/rhino_000/Documents/NetBeans/HelloWorld/dist/HelloWorld.jnlp
>>
>
> Those last two URLs are illegal, so I doubt they'd help.
>
>> I'm running Windows 8.1. When I double-click on the HelloWorld.jar in File Explorer
>> here on the laptop, the application launches just fine. When I right-click on the
>> HTML file and open it in Firefox, the Test Page for HelloWorld shows a "loading"
>> animation that just keeps spinning and spinning and spinning but never gets done.
>>
>> When I right-click on the JNLP file in File Explorer, I get the Web Start "Java ..."
>> splash screen, then I'm back to the error message I reported in my initial post in
>> this thread.
>>
>> Hmm. I just added the following to the white-list:
>>
>> file://
>
> Try it with three slashes.  Hierarchical URI protocols always end in "://"
> (while non-hierarchical ones end in ":").  So that URI doesn't specify
> any particular host/codebase.  A third slash conventionally means localhost.
>
Sorry, I just checked and I mistyped the previous post: the protocol I 
added was file:/// (three slashes, not two).

In fact, the white-list won't even ACCEPT file:// as valid; I get a red 
exclamation point and if I close it and come back, the file:// entry 
wasn't saved.

>>
>> Now, when I right-click on the JNLP file and choose Open With Java Web Start
>> Launcher, it actually launches without the error message! However, right-clicking on
>> the HTML file and opening it in Firefox works no better than it did before.
>
> Web browsers often have difficulty with that.  It has something to do with
> a confusion by the web browser if the resource is local or remote.  Different
> internal URIs are used.  I just run a local webserver, put my files in that,
> and use http://localhost/ to test 'em out.  This avoids using file:// protocols.
>
Fair enough. But doesn't that imply that I need to set up a server on my 
computer and then copy the files to that server? Or is there some simple 
way to use localhost to point to a specific file or directory on my hard 
drive that I've forgotten? I'm not coming up with anything like that in 
my Google search for localhost examples....

I should mention that I'm very rusty with some of this stuff.

> You can see if that's the problem by (temporarily) setting the security
> level to medium, and see if the problem goes away.  If so, you just need to
> get the URIs in the white list correct.
>

I turned security down to medium and get all the same symptoms as 
previously reported.
> Note, Java DOES NOT (yet) support IPv6 for specifying security parameters such
> as this white-list.  (I've asked.)  Since all hosts default to IPv6 first, then
> fall back on IPv4, you may see your browser using "localhost", but Java won't
> notice that if IPv6 to localhost is tried (by the browser).  In that case
> the IP address used to launch your Java app is "::1", not "localhost" or
> "127.0.0.1", and that will fail.  You can try to always use the
> "127.0.0.1 value in your URIs, that may also solve your issue.
>

I'm not clear on how to reference a file on my hard drive via localhost 
or 127.0.0.1. It's been a few years since I last messed with localhost 
and it's just not coming back to me clearly. Google isn't getting me to 
the right place yet either....

Sorry for being so dense!

I really just want to be sure that I can get a trivial program using 
JavaFX to work both on my laptop and on a server before I start to put 
major time into learning how to write JavaFX code for myself.


-- 
Rhino

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Thread

JavaFX beginner issue Rhino <no_offline_contact_please@example.com> - 2014-05-04 23:25 -0400
  Re: JavaFX beginner issue Wayne <nospam@all.invalid> - 2014-05-05 01:53 -0400
    Re: JavaFX beginner issue Rhino <no_offline_contact_please@example.com> - 2014-05-05 11:29 -0400
      Re: JavaFX beginner issue Jeff Higgins <jeff@invalid.invalid> - 2014-05-05 12:13 -0400
      Re: JavaFX beginner issue Wayne <nospam@all.invalid> - 2014-05-05 23:41 -0400
        Re: JavaFX beginner issue Rhino <no_offline_contact_please@example.com> - 2014-05-06 17:02 -0400

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