HttpClient SSL Race Condition

[August Nagro]

Thanks! I cannot reproduce the problem on 13-ea b06 (I was using b03).

- August

On Sun, Feb 3, 2019 at 5:10 AM Daniel Fuchs <daniel.fuchs at oracle.com> wrote:

> Hi,
>
> It looks like this is JDK-8214418 - which has been fixed
> in 12.0.1 b03 and 13-ea b04. The issue was with the
> half closed semantics of the SSL engine in TLS 1.3.
>
> This is only loosely related to
> https://bugs.openjdk.java.net/browse/JDK-8217094
> (we found that while testing the fix to JDK-8214418)
> but JDK-8217094 is also fixed in 13-ea b04.
>
> If you're testing on 13-ea, could you make sure to test on
> a recent build >= b04?
>
> best regards,
>
> -- daniel
>
>
> On 03/02/2019 03:38, August Nagro wrote:
> > Hello,
> >
> > When using multiple threads to send HttpRequests from a static final
> > HttpClient instance, I noticed that CPU use spikes after a minute or so.
> >
> > I created a reproducible example that I've tested on Java 11.0.2 and
> > 13-ea:
> https://gist.github.com/AugustNagro/fec5f7895bd8bb5db66f2ed9cfafc35c
> >
> > This bug never occurs when using a single thread. Also, switching TLS to
> > 1.2 or 1.1 does not fix the issue. Looking at VisualVM it seems that
> > SSLFlowDelegate is entering some sort of race condition.
> >
> > Is this a bug in java.net.HttpClient, or should I not be accessing the
> > HttpClient from multiple threads?
> >
> > Regards,
> >
> > August Nagro
> >
> > PS: Could this be related to (fixed)
> > https://bugs.java.com/bugdatabase/view_bug.do?bug_id=8217094?
>
>
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