I was thinking about doing a HttpSessionListener but apparenty, there is a better way according to this article: https://goo.gl/j7vnXQ.

It's a pure servlet session issue so don't hesitate to create your own and include this bean in your nuxeo package, it would be a good start!

Otherwise if its failing you can use the HttpSessionListener to give another try. In order to install one, its again a pure java servlet concept but simpler with the nuxeo fragment deployment:

• https://github.com/nuxeo/nuxeo/blob/master/nuxeo-services/nuxeo-platform-management/src/main/java/org/nuxeo/ecm/platform/management/adapters/HttpSessionMetricListener.java
• contribution in your package: https://github.com/nuxeo/nuxeo/blob/master/nuxeo-services/nuxeo-platform-management/src/main/resources/OSGI-INF/deployment-fragment.xml

Thanks!