UDP

Raw audio between a satellite and Hannah Core, used when the satellite is directly reachable (as opposed to going through the Proxy). No TLS — the LAN-only, low-power trade-off described in Architecture Overview.

Message types

Type	Content
0x01	JSON control message (register, heartbeat, status)
0x02	Audio chunk (raw PCM, 16kHz, 16-bit, mono) — satellite → Core
0x03	TTS audio chunk — Core → satellite

Registration

{"type": "register", "device": "kitchen-esp", "room": "Kitchen", "ip": "...", "port": 5005}