This patch removes the need for the RPC Server from aprsd.
APRSD Now saves it's stats to a pickled file on disk in the
aprsd.conf configured save_location. The web admin UI
will depickle that file to fetch the stats. The aprsd server
will periodically pickle and save the stats to disk.
The Logmonitor will not do a url post to the web admin ui
to send it the latest log entries.
Updated the healthcheck app to use the pickled stats file
and the fetch-stats command to make a url request to the running
admin ui to fetch the stats of the remote aprsd server.
This patch starts the work to replace flask-socketio with
python-socketio so that uwsgi can be used instead of gunicorn.
uwsgi can support websockets.
Have to rework webchat command next
This patch introduces rpyc based RPC client/server for
the flask web interface to call into the running aprsd server
command to fetch stats, logs, etc to send to the browser.
This allows running the web interface via gunicorn command
gunicorn -k gevent --reload --threads 10 -w 1 aprsd.flask:app --log-level DEBUG
