Description
Hi,

I have recently bought a new router (TP-Link Archer AX1800) and since then spotifyd always disappears from my Spotify Connect devices list after some hours of being idle (e.g. I leave my home).
This is always happening, though the timeout does seem to vary a bit.

Because it happens since the introduction of my new router, I suspect some networking issue, like some TCP connection being closed despite still in use, even if barely.

Unfortunately spotifyd does not realize its connection has been closed and does not restart automatically (which would solve the problem), nothing interesting is printed in the logs, so I always have to restart the service manually, which is pretty annoying.

Could you please implement some heartbeat check or more pedantic network connection handling, so maybe it can detect connection issues and reconnect if needed?

Thanks in advance!

To Reproduce
0. (buy and use TP-Link Archer AX1800)

1. Start spotifyd, play some music
2. Stop playing music, but keep spotifyd running
3. Leave spotifyd alone for some hours
4. Notice that spotifyd is not in the Spotify Connect devices list anymore 😞

Expected behavior
4. Notice that spotifyd is still in the Spotify Connect devices list 😊

Logs

Compilation flags

• dbus_mpris
• dbus_keyring
• alsa_backend
• portaudio_backend
• pulseaudio_backend
• rodio_backend

(Downloaded the binary release from here.)

Versions (please complete the following information):

• OS: Ubuntu 18.04.5 LTS bionic (Linux 4.14.180-178 Add Upstart job (not installed with make) #1 SMP PREEMPT Wed Sep 2 12:39:45 -03 2020 armv7l armv7l armv7l GNU/Linux)
• Spotifyd: spotifyd 0.3.0
• cargo: not installed