PubSub Transport

This package contains two related building blocks that both run on top of @peerbit/stream:

TopicControlPlane (/peerbit/topic-control-plane/1.0.0)

A DirectStream-based topic membership and forwarding layer.

This is useful for small to medium overlays and targeted messaging (explicit receiver lists) where you can tolerate subscription gossip and do not need the strict fanout economics of a tree.

FanoutTree (/peerbit/fanout-tree/0.5.0)

A scalable fanout tree for 1 writer to many subscribers (and tree-local unicast using route tokens).

This is the intended mechanism for very large audiences where you must cap per-node upload and avoid gossip-style explosion.

FanoutChannel is a small convenience wrapper around FanoutTree for channel-scoped usage.

TopicRootControlPlane

A small helper to resolve a topic root from:

• An explicit mapping (topic -> root)
• A set of default candidates (deterministic choice per topic)
• Optional trackers (if configured by the application)