Brian Harrison 51d1aa917a Add TCP/modem transport (Sierra Wireless RV55/RX55 field units) ...

- minimateplus/transport.py: add TcpTransport — stdlib socket-based transport
  with same interface as SerialTransport. Overrides read_until_idle() with
  idle_gap=1.5s to absorb the modem's 1-second serial data forwarding buffer.
- minimateplus/client.py: make `port` param optional (default "") so
  MiniMateClient works cleanly when a pre-built transport is injected.
- minimateplus/__init__.py: export SerialTransport and TcpTransport.
- sfm/server.py: add `host` / `tcp_port` query params to all device endpoints.
  New _build_client() helper selects TCP or serial transport automatically.
  OSError (connection refused, timeout) now returns HTTP 502.
- docs/instantel_protocol_reference.md: add changelog entry and full §14
  (TCP/Modem Transport) documenting confirmed transparent passthrough, no ENQ
  on connect, modem forwarding delay, call-up vs ACH modes, and hardware note
  deprecating Raven X in favour of RV55/RX55.

Usage: GET /device/info?host=<modem_ip>&tcp_port=12345

2026-03-31 00:44:50 -04:00

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