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Milan PandurovandClaude Fable 5.1 62b57a7e56 Add MQTT diagnostics, broker connection probe, and switch to Debian base
The MQTT publisher now tracks connection state, publish counters, discovery
and availability timestamps, and the last error, exposed at /api/mqtt and on
the dashboard as an MQTT card and a Home Assistant section. Connection
failures, disconnects, and dropped publishes are logged; paho's
on_connect_fail callback was not registered before, so failed attempts were
silent. MQTT connect, disconnect, and unreachable events go to the timeline.

When a connection attempt fails the service runs a probe from inside the
container: system resolver, each nameserver from resolv.conf queried directly,
/etc/hosts, and a TCP connect to every address found. The result is shown as
a summary and raw JSON on the dashboard and can be rerun via
POST /api/mqtt/probe.

The image base moves from Alpine to Debian slim. musl queries all
nameservers in parallel and accepts the first reply, so a fast public
NXDOMAIN beats a slower local server that knows the name. glibc asks the
nameservers in order.

Co-Authored-By: Claude Fable 5.1 <noreply@anthropic.com>
2026-09-29 12:08:48 +02:00

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Docker

FROM python:3.12-slim
RUN apt-get update && apt-get install -y --no-install-recommends iw && rm -rf /var/lib/apt/lists/*
WORKDIR /app
COPY requirements.txt /app/
RUN pip install --no-cache-dir -r requirements.txt
COPY . /app
EXPOSE 9999
VOLUME /data
ENTRYPOINT ["python", "app.py"]