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@PetitPrinc3 PetitPrinc3 released this 11 Sep 09:54
· 32 commits to main since this release
v0.1.0-beta
09aa04c

Zero-Copy Multicast-to-Kafka, ANSSI-Ready 🦀

Nothing But Data (NBD) is a lightweight, high-performance, security-hardened daemon that ingests real-time UDP multicast traffic and relays it to Apache Kafka — built in Rust for sub-millisecond latency in sensitive production environments.

This is the project's first tagged release: a beta, feature-complete for its core use case but still collecting real-world mileage before a stable 1.0.

✨ Highlights

  • 🚀 Zero-copy pipeline — bytes::BytesMut split-and-freeze pattern from socket to Kafka producer, no unnecessary allocations on the hot path
  • 📡 Multi-channel UDP multicast ingestion via socket2, with per-provider topic/group/interface configuration
  • ⚙️ Two-stage TOML config validation — parse then validate, with sensible defaults and diagnostic warnings
  • 🛑 Graceful shutdown via CancellationToken, draining in-flight messages before exit
  • 📈 Optional Prometheus exporter (metrics-exporter feature) for packet, byte, and error counters
  • 🖥️ Cross-platform — Linux and Windows, Tier 1 targets
  • 🧰 CLI — --config-file, --check-config-file (dry-run validation), --about

🔐 Security & Compliance

  • Tracks the ANSSI Secure Rust Development Guide — see SECURITY.md for the full compliance matrix
  • #![forbid(unsafe_code)], overflow checks enabled in release builds, no unwrap() on production paths
  • Supply-chain policy enforced via cargo-deny (license allowlist, no unvetted registries, yanked-crate ban)
  • Ships a production-ready, hardened systemd unit (DynamicUser, ProtectSystem=strict, capabilities dropped)

📊 Performance

Benchmarked with a dedicated integration test suite (steady-state, burst, and multi-channel scenarios) reporting p50–p99.9 latency distributions. Full methodology and results in PERFORMANCE.md.

🚧 Beta status

This is a single-maintainer, best-effort project. The core pipeline is stable and tested, but the configuration schema and public API may still move before 1.0. Bug reports and feedback are very welcome — see CONTRIBUTING.md to get started, and SECURITY.md for responsible disclosure.

📦 Getting started

cargo build --release --features metrics-exporter
./target/release/nothing_but_data --config-file /path/to/config.toml

See the README for the full configuration reference and deployment guidance.

📝 Full changelog: CHANGELOG.md

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