Tag: java

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javax.net.ssl.SSLHandshakeException: extension (5) should not be presented in certificate_request

After bumping to latest docker (19.03.12) or minikube (0.12.1) you might quickly realise that you cannot push images from under maven build lifecycle.

This is because docker guys bumped go lang dependency which by default is using TLS 1.3

Either add 

-Djdk.tls.client.protocols=TLSv1.2

to your java / maven command line or update your java to the very latest as this is fixed in every major java version now.

https://github.com/golang/go/issues/35722

https://bugs.openjdk.java.net/browse/JDK-8236039

Also it might be great opportunity to learn about TLS 1.3.. the biggest improvement is reducing handshake time. Are you microservices talking to each other using latest TLS.. by default currently it’s rather unlikely and the change could greatly improve your integration test time, not to say about waiting time of your users.

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Java does not work in latest firefox 52?

Old problem comes back due to different reasons. Firefox follows chrome and drops support for NPAPI plugins (it affects Silverlight and Flash as well).
By default support is disabled, but you can revert in.

  1. Go to about:config settings webpage (type it as uri in browser and press enter)
  2. Add new entry of boolean type with name plugin.load_flash_only and value set to false
  3. Restart browser and your java and silverlight should work again!