If we decide to use HTTPS for notification endpoint this must be configured for the WildFly module. This will consist of setting useTls() and also using port 8443 instead of 8000.
The configuration is currently done programmatically but this will change in the near future and we have a specific subsystem for SimplePush.

A branch is prepared for this:
https://github.com/danbev/aerogear-simple-push-server/tree/ssl-enabled-for-notifications

The following OpenShift instance uses this configuration:
https://tls-dbevenius.rhcloud.com:8443/simplepush