truffle-core

Clean architecture rebuild of truffle's core networking library.

This crate implements the layered architecture described in RFC 012:

• Layer 3 (Network): Peer discovery, addressing, encrypted tunnels via Tailscale
• Layer 4 (Transport): WebSocket, TCP, QUIC protocol transports
• Layer 5 (Session): Peer registry, lazy connections, message routing
• Layer 6 (Envelope): Namespace-based message framing
• Node API: Single public entry point wiring all layers together

Quick start

use truffle_core::{Node, NodeBuilder};

let node = Node::builder()
    .name("my-app")
    .sidecar_path("/usr/local/bin/truffle-sidecar")
    .build()
    .await?;

let peers = node.peers().await;
node.send(&peers[0].id, "chat", b"hello!").await?;

Layer 3 — Network

The NetworkProvider trait defines a generic interface for peer discovery and raw connectivity. The TailscaleProvider implementation wraps the Go sidecar (tsnet) to provide encrypted Tailscale tunnels.

Layer 4 — Transport

Three transport trait families sit on top of Layer 3:

• StreamTransport + FramedStream: Message-oriented bidirectional connections (WebSocket, future QUIC streams).
• RawTransport: Raw byte streams (TCP).
• DatagramTransport: Unreliable datagrams (future UDP/QUIC).

Layer 5 — Session

The PeerRegistry manages peer state and WebSocket connections. Peers exist in the registry when Layer 3 discovers them, even before any transport connections are established.

Layer 6 — Envelope

The [Envelope] struct wraps all application messages with a namespace string for routing and an opaque JSON payload that truffle-core never inspects.

Node API

The [Node] struct is the single public entry point. It exposes ~12 methods covering discovery, messaging, raw streams, and diagnostics.