SignalingChannel
interface SignalingChannel
Out-of-band channel used to exchange SignalingMessages between two WebRTC endpoints during bootstrap. The library does not specify how messages get from one endpoint to the other — that is the implementation's concern (e.g. WebSocket relay, QR code, BroadcastChannel).
Lives in :transport-webrtc rather than :transport-core because it is WebRTC-specific scaffolding.