telefonicaid/notification_server — pull request #145 by willyaranda (2012-12-11 18:14:58+00:00)
Title: Detect duplicate connection and close the older

This makes `getNodeConnector` synchronous (no neccesary to be async since implies no I/O).
`unregisterNode` is right now only responsibility of WebSocket `close` event, so we do not try to close and delete, at least, twice.