heroku[router]: at=error code=H15 desc="Idle connection" method=GET path="/"

[draeder]

Heroku repeatedly produces the following error after a client connects to the tracker:

2021-02-13T16:54:08.583372+00:00 heroku[router]: at=error code=H15 desc="Idle connection" method=GET path="/" host=ws.peer.ooo request_id=344c3552-3eb5-4ae6-a989-50bd1b6d933d fwd="123.123.123.123" dyno=web.1 connect=0ms service=56234ms status=503 bytes= protocol=https

Due to the nature of BitTorrent trackers, web sockets is used only to establish communication between peers. No further connection is needed once the peers are connected, so the web sockets channels are closed.

This is a benign error, and will not be addressed. See: https://stackoverflow.com/a/59941248/1551027