handling close or error message

[Chat-Wane]

Currently, when a peer leaves the network (because crashes or voluntarily quits), no change are made in partialView and inView.
Thus, broadcasting generates errors because it cannot reach the peer.

Without implementing specifically the SCAMP protocol for this kind of situation (i.e. rebalancing and so on), at least, the peer must be delete from the views.

[Chat-Wane]

When WebRTC connections fail or close, it triggers event "close" or "error" ( Not sure about the error one, though ). Currently, it only remove the link from the view. However, the paper shows a better way to handle unsubscription in order to keep the network graph connected an balanced.

TODO: the unsubscription protocol, which requires that the user does not close directly the webpage. Such event would be considered as a crash.