Is it needed a paid license to use the Java Transport Client in Elasticsearch 7.4?

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Thanks both.

We need to keep the Java Transport Client in a 1st phase, then we will migrate the new REST one.
That is not the point of this question. We know about its deprecation in v8, but we cannot do it now.

@Christian_Dahlqvist, thanks, you are true, in the Java Transport Client documentation it is described how to connect to an unsecured cluster (without SSL). I didn't remember as we do connect to a secured cluster.

We exactlly connect as it is described here in the official docu, so against a secured cluster but without client authentication.

In this context

  1. is it possible to connect the Java Transport Client to a secured cluster that is version Open Source?
    • I understand the answer for this is NO, right?
  2. and if the cluster has Basic license?
    • I understand the answer for this is YES, right?