Module overlay_network 

Structured overlay network manager supporting multiple topology strategies.

This module provides OverlayNetworkManager, which models a logical overlay network on top of physical connectivity. It supports Chord finger-table routing, Pastry prefix routing, Kademlia greedy forwarding, FullMesh direct routing, and spanning Tree routing—all computed purely in-memory without I/O.

Routing algorithms

Topology	Route selection	Latency estimate
FullMesh	direct 1-hop	20 ms
Chord	finger table log₂(N) hops	20 ms/hop
Tree	BFS in spanning tree	20 ms/hop
Pastry	greedy numeric proximity	20 ms/hop
Kademlia	greedy numeric proximity	20 ms/hop

Structs

OverlayMessage

A message routed through the overlay network.

OverlayNetworkManager

Manages a logical overlay network of nodes with topology-aware routing.

OverlayNode

A participant in the overlay network.

OverlayRoute

A computed route through the overlay network.

OverlayStats

Snapshot of overlay network statistics.

Enums

OverlayError

Errors returned by OverlayNetworkManager.

OverlayTopology

Overlay topology strategy used by OverlayNetworkManager.