This is an experiment in creating a location-based buddy list for XMPP. Users can monitor within a geographic radius and as other users enter and exit that radius, their buddy list is updated so they can communicate with users near them.

A potential use case for this type of technology is for Internet of Things applications. You could enter a room and be notified of available services and be able to interact (send messages) to them. For example, perhaps you could control lighting or a/v equipment in a friend's home or interact with a display in a retail environment.

Integration Tests demonstrate at a high level how the server is meant to work

GeopresencePlugin is the entry point where the Openfire XMPP server initializes the plugin.

GeoCellGeopresenceManager manages updates to the GeoCell grid.