Small program for testing the validity of certificates and trust stores.

Either build "normally":

./mvnw package

or do a native build (that needs a GraalVM JDK)

./mvnw package -Pnative

java SSLPoke [target-hostname] [port]

sslpoke [target-hostname] [port]

If the server certificate is trusted by the client-truststore it will print,

Successfully connected

Otherwise, it will print an exception like this.

javax.net.ssl.SSLHandshakeException: sun.security.validator.ValidatorException: PKIX path building failed:
sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target

The same options can be passed to the Java program or the native program.

For example:

• the path to a trust store
  • -Djavax.net.ssl.trustStore=[client-truststore-path]
• enabling some debugging output
  • -Djavax.net.debug=ssl:handshake
• proxy settings etc...

This class or similar ones are a bit everywhere, I couldn't find which one was the first one. Possibly, from this file on the Atlassian website.