SDAP — UDP 53862, advertisement layout decoded by SdapAdvertisementPacket. Listening helper: SdapDiscovery.
Field offsets (product name, serial, IP octets 50–53, group/unit 120–121, SONY community at 4–7) are documented inline on the type.
TCP host selection: firmware may leave the packet “connection IP” octets at 0.0.0.0. For SDCP over TCP, use the UDP source address of the advertisement (see SdapAdvertisementPacket.RecommendedControlIPv4 and discover API field recommendedControlIPv4).
After discovery: optional SDCP TCP unit and VMC item (B000h / B001h) are configured on the control client, not in SDAP — see quickstart.md and sdcp-framing-and-items.md.
The ManualsLib excerpt of PVM-740 Interface Manual for Programmers describes SDAP v4: header ASCII "DA" (44h 41h), version 04h, category 0Bh (monitor) or 0Ch (monitor controller), community "SONY", plus product name (12 chars), serial, connection IP, acceptable IPs, power status, optional error/region/name fields, and Group ID / Unit ID (see reference/pvm-740-programmer-manual-synthesis.md).
Operational notes from that excerpt:
- Default broadcast interval: monitor 15 s, controller 30 s (your firmware may differ).
- When driving UDP menu/cursor traffic toward devices, leave ≥ 50 ms between packets (BKM-15R reference 100 ms in the excerpt).
Optional third-party cross-checks: reference/external-sources.md (not required for implementation in this repo).