UT000065: SSL must be specified to connect to a https URL when using ejb over https
There is an XA Recovery Issue when EJB over HTTPS is used.
If an XA transaction fails, when the server is restarted it will find the standalone/data/ejb-xa-recovery files to recover, and the xa recovery runs it will hit this exception below. The https://issues.redhat.com/browse/JBEAP-19511 solved the issue when EJB1 calls EJB2, however, the issue happens to EJB2 to EJB3. The https://issues.redhat.com/browse/WFLY-13696 has two PR that looks like to fix the issue. These are the PRs:
The PR to fix the issue: https://github.com/wildfly/wildfly-http-client/pull/57