[All Services] IBM Java results in only the 3DES cipher suite being choosen

[coxd]

IBM Java (any version) has incompatibilities with the OkHttpClient that are documented here. It is possible OkHttpClient may resolve this issue soon as there is current activity on it.

This issue proposes a solution that involves configuring OkHttpClient with a custom SSLContext but I believe would require reflection to only do this when IBM Java is in use (you would not want to interfere with defaults on other platforms/JDKs).

[bruceadams]

A lightweight way to figure out if code is running on IBM Java is by looking at the Java System Property java.vm.name. The value of that property, across many releases of IBM Java is IBM J9 VM. In Java code, this is roughly:

if ( System.getProperty("java.vm.name").equals("IBM J9 VM") ) { ... }

[germanattanasio]

What's the output of that if running in Android?

[bruceadams]

I don't have an easy way to try it on Android. It most certainly is not IBM J9 VM on Android. I suppose there is a risk that it's not defined, which means the Java code should get flipped around to avoid a Null Pointer Exception:

if ( "IBM J9 VM".equals(System.getProperty("java.vm.name")) ) { ... }

[bruceadams]

The OkHttpClient issue square/okhttp#3173 has been closed by this pull request square/okhttp#3218 being merged into master. Do we want to test that this (not yet released) change to OkHttpClient works for us?

[germanattanasio]

@bruceadams I tried the solution from this gist but I'm still seeing the error.

Here is what I'm doing: https://gist.github.com/germanattanasio/3f0e7458328e817b4e63952ffaa93da2

[asidd]

@germanattanasio - what's update on this issue

[ShubhamSharmaCSE]

Please can anyone provide me about the details of how to tackle this issue, I have a submission of my final year project this week but this error is not letting us test our project .

Thanks.

[bruceadams]

@ShubhamSharmaCSE The easiest workaround is to use OpenJDK or Oracle Java instead of IBM Java. Can you do that?

[mjoellnier]

@bruceadams how can this be done? can this be done even when the project is hosted on bluemix?

I also have a presentation of my project next tuesday... hopefully there will be a way to get it working again.

Thank you!