That JNDI bug affects Java versions 9-13. And doesn't affect CAS unless
you've specifically enabled the JndiProvider. I believe the UnboundID
provider is enabled by default.

--Daniel Fisher

On Wed, May 6, 2020 at 11:48 AM Ray Bon <r...@uvic.ca> wrote:

> Baron,
>
> I seem to recall a bug in the JVM with some versions that affected ldap
> connections. It did not affect us so I really did not pay close attention.
> If you recently upgraded your java, you might want to look in to this.
>
> Ray
>
> On Tue, 2020-05-05 at 17:14 -1000, Baron Fujimoto wrote:
>
> Notice: This message was sent from outside the University of Victoria email 
> system. Please be cautious with links and sensitive information.
>
>
>
> We're running CAS 5.0.10 under Tomcat 8.5.54 with LDAP (389DS) for 
> authentication and attributes. We were previously using Java 1.0.8_212 
> successfully. However, I recently upgraded the instance to use the current 
> version of Java (251), and after doing so noticed that the LDAP connections 
> quickly begin to time out with the following error:
>
>
> javax.naming.NamingException: LDAP response read timed out, timeout used:-1ms
>
>
>  From the CAS login perspective, the user authentications fail.
>
>
> I've empirically determined that this appears to happen with a version of 
> Java 8 higher than 221 (i.e. 231, 241, 251). I dodn't see anything in the JDK 
> release notes for 231 that appear to be relevant.
>
> <
>
> https://www.oracle.com/technetwork/java/javase/8u-relnotes-2225394.html
>
> >
>
>
> I've also tried explicitly setting
>
>
> "-Dcom.sun.jndi.ldap.read.timeout=-1" and 
> "-Dcom.sun.jndi.ldap.read.timeout=1800000"
>
>
> java opts when I start the CAS processes with no apparent effect.
>
>
> FWIW, the Tomcat version doesn't seem to matter, and I'm also seeing similar 
> behavior when I attempt the same upgrade in our Grouper deployment.
>
>
> Any suggestions or ideas would be appreciated.
>
> --
>
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>
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>
>
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> Ray Bon
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> Development Services, University Systems
> 2507218831 | CLE 019 | r...@uvic.ca
>
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> ancestral, traditional and unceded territory of the Songhees, Esquimalt and
> WSÁNEĆ Nations.
>
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