GCM-less voice calls

[anarcat]

Currently, Signal and LibreSignal (Websocket) require GCM for voice calls to function properly. In fact, as things stand, voice calls do not work in the websocket fork at all (see #10). This is because it is deliberately built without GCM support.

For this to be fixed, one would need the Redphone server to start supporting Websocket as well. This was refused upstream previously:

#10 (comment)

The Redphone software is currently closed-source (or at least, unpublished) and even if it was, the WebSocket support would need to be implemented and accepted by the Signal upstream.

Also according to this, it is possible the Signal server changes so that it implements the voice calls differently which wouldn't require the Redphone server to be open-sourced:

#10 (comment)

In effect, this would mean that redphone and signal would finish merging.

This issue is about trying to make LibreSignal (Websocket) support phone calls without GCM.

Forked off #10 for clarity.

[ghost]

@anarcat Perhaps it's time to close this issue as obsolete?