alh477/dcf-c repository overview

⁠alh477/dcf-c — DCF mesh node (C) + Faust-DSP modem

The DCF / HydraMesh C SDK node (dcfnode). Two transports for the certified 17-byte DeModFrame:

1. ProtoMessage / UDP — byte-identical to the Go/Rust nodes, so it meshes with alh477/dcf-go and alh477/dcf-rs.
2. Faust-DSP modem — carries a frame across a modulation medium (FSK / OOK / PSK / QAM), the "modulations across quanta mediums" path. The byte↔symbol mapping is certified across Python/Rust/C; the waveform is loopback-tested (like DCF-Audio synthesis).

Built hermetically with Nix (dockerTools). Entrypoint dcfnode; default command start.

⁠Run

docker run --rm -p 7777:7777/udp alh477/dcf-c start --bind 0.0.0.0:7777
docker run --rm alh477/dcf-c send-text     --peer HOST:7777 --channel lobby --text "hi"
docker run --rm alh477/dcf-c send-game     --peer HOST:7777 --channel-id 1 --hex deadbeef --type 2
docker run --rm alh477/dcf-c send-position --peer HOST:7777 --x 1 --y 2 --z 3

# Faust modem over a file "medium" (a shared volume stands in for the channel)
docker run --rm -v ch:/m alh477/dcf-c send-modem --medium /m/x.dcfm --modulation qam --text "hi"
docker run --rm -v ch:/m alh477/dcf-c recv-modem --medium /m/x.dcfm

⁠Wire

• Quantum: 17-byte DeModFrame — certified, shared across SDKs.
• Transports: ProtoMessage/UDP (mesh with Go/Rust); Faust modem (FSK/OOK/PSK/QAM).
• Spec: DCF_MODEM_SPEC.md⁠.

Tags: latest, 0.3.0. Ports: 7777/udp. License: LGPL-3.0-only. Source & full docs: https://github.com/ALH477/HydraMesh⁠