Emergency message on site with rules(?) In the event of an emergency I would like the site administrator to push a message to all screens (to any anonymous viewer on any page). The push should not require the visitor to refresh their page or visit another page. The message must push out to all pages without requiring the viewer to take action.

Perhaps after a cron run?

Additional nice-to-haves:


the message is a node of a specific content type
upon creating this node, the author must "activate" the node before the message is live


Any suggestions?
I think this is what you want Rules action with node.js  module

In order to do this, you have to install the node.js on your server. They have a tutorial video for that Installation of Node.js integration module for Drupal