CentOS - Nov 2019 - Firefox 68 jnlp files

It seems that firefox 68.x, as distributed with CentOS6 updates, no longer
allows opening jnlp files with javaws

The "Choose Helper Application" window popping up after selecting
"Open with/Other" has a predefined list of applications that cannot be
customised.

I'm sure it must be a configuration issue as this works fine with the same
browser on other distributions, but what to look for?

# alternatives --display javaws          
javaws - status is auto.
 link currently points to /usr/java/latest/jre/bin/javaws
/usr/java/latest/jre/bin/javaws - priority 200000
Current `best' version is /usr/java/latest/jre/bin/javaws.
# ll -L /etc/alternatives/javaws
-rwxr-xr-x 1 root root 140296 Dec 15  2018 /etc/alternatives/javaws
#

isdtor writes:
> It seems that firefox 68.x, as distributed with CentOS6 updates, no longer
allows opening jnlp files with javaws
> 
> The "Choose Helper Application" window popping up after selecting
"Open with/Other" has a predefined list of applications that cannot be
customised.
> 
> I'm sure it must be a configuration issue as this works fine with the
same browser on other distributions, but what to look for?
> 
> # alternatives --display javaws          
> javaws - status is auto.
>  link currently points to /usr/java/latest/jre/bin/javaws
> /usr/java/latest/jre/bin/javaws - priority 200000
> Current `best' version is /usr/java/latest/jre/bin/javaws.
> # ll -L /etc/alternatives/javaws
> -rwxr-xr-x 1 root root 140296 Dec 15  2018 /etc/alternatives/javaws
> # 
No replies, really? Lack of this facility makes browser and platform unusable
for server management.

Not knowing what kind of server management you're looking for I can only
make general suggestions.  We found that the removal of Java support (actually
NSAPI in favor of the Pepper API which Oracle has stated they won't support)
left us with limited IPMI (iLO, DRAC, whatever) functionality.  And, looking at
https://en.wikipedia.org/wiki/Java_Web_Start, Oracle has stopped supporting
javaws.  In our case (SuperMicro) we found two things: their newer hardware had
switched to HTML5/iKVM which didn't require Java and SuperMicro had supplied
non-browser-based (but Java-based) programs which supplied equivalent
functionality for the legacy hardware.  My recommendation would be to look into
those alternatives.
Java Web Start - Wikipedia<https://en.wikipedia.org/wiki/Java_Web_Start>
In computing, Java Web Start (also known as JavaWS, javaws or JAWS) is a
framework developed by Sun Microsystems (now Oracle) that allows users to start
application software for the Java Platform directly from the Internet using a
web browser.Some key benefits of this technology include seamless version
updating for globally distributed applications and greater control of memory
allocation to ...
en.wikipedia.org



________________________________
From: CentOS <centos-bounces at centos.org> on behalf of isdtor <isdtor
at gmail.com>
Sent: Thursday, November 14, 2019 8:17 AM
To: centos at centos.org <centos at centos.org>
Subject: [EXTERNAL] Re: [CentOS] Firefox 68 jnlp files

isdtor writes:
> It seems that firefox 68.x, as distributed with CentOS6 updates, no longer
allows opening jnlp files with javaws
>
> The "Choose Helper Application" window popping up after selecting
"Open with/Other" has a predefined list of applications that cannot be
customised.
>
> I'm sure it must be a configuration issue as this works fine with the
same browser on other distributions, but what to look for?
>
> # alternatives --display javaws
> javaws - status is auto.
>  link currently points to /usr/java/latest/jre/bin/javaws
> /usr/java/latest/jre/bin/javaws - priority 200000
> Current `best' version is /usr/java/latest/jre/bin/javaws.
> # ll -L /etc/alternatives/javaws
> -rwxr-xr-x 1 root root 140296 Dec 15  2018 /etc/alternatives/javaws
> #
No replies, really? Lack of this facility makes browser and platform unusable
for server management.

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isdtor wrote:
> 
> It seems that firefox 68.x, as distributed with CentOS6 updates, no longer
allows opening jnlp files with javaws
> 
> The "Choose Helper Application" window popping up after selecting
"Open with/Other" has a predefined list of applications that cannot be
customised.
> 
> I'm sure it must be a configuration issue as this works fine with the
same browser on other distributions, but what to look for?
> 
> # alternatives --display javaws
> javaws - status is auto.
>   link currently points to /usr/java/latest/jre/bin/javaws
> /usr/java/latest/jre/bin/javaws - priority 200000
> Current `best' version is /usr/java/latest/jre/bin/javaws.
> # ll -L /etc/alternatives/javaws
> -rwxr-xr-x 1 root root 140296 Dec 15  2018 /etc/alternatives/javaws
> #
Don't know about CentOS6, but with CentOS7, the selection of apps that 
you can use appear to map to '.desktop' files?

If it is the same on CentOS6, then you might be able to set up a 
suitable .desktop file (e.g. in /usr/share/applications/ or similar) to 
do what you want ...

No idea if this is of any help

James Pearson