Multiple snapclients on same machine - names howto?

[ztardik]

Hello,
I'm trying to setup a multizone player/amp with snapcast. At the moment snapserver and 4 snapclients run on the same orangepi zero with 4 usb DACs. Everything works fine except the zone names don't get automatically assigned.

The snapclients start via system services, one for each zone:

# systemctl status snapclient_zone1.service

● snapclient_zone1.service - Snapcast client Zone 1
Loaded: loaded (/lib/systemd/system/snapclient_zone1.service; enabled; vendor preset: enabled)
Active: active (running) since Fri 2022-02-18 12:32:48 +06; 5min ago
Docs: man:snapclient(1)
Main PID: 1729 (snapclient)
Tasks: 2 (limit: 905)
Memory: 1.6M
CPU: 1.529s
CGroup: /system.slice/snapclient_zone1.service
└─1729 /usr/bin/snapclient --logsink=system -h 127.0.0.1 --hostID Zona-1 -i 1 -s Zone1

Feb 18 12:33:36 orangepizero snapclient[1729]: Player name: alsa, device: hw:CARD=Zone1,DEV=0, description: CX31993 384Khz HIFI AUDIO, USB Audio
Feb 18 12:33:37 orangepizero snapclient[1729]: Direct hardware device without any conversions, idx: 16, sharing mode: unspecified, parameters:
Feb 18 12:33:37 orangepizero snapclient[1729]: Mixer mode: software, parameters:
Feb 18 12:33:37 orangepizero snapclient[1729]: Sampleformat: 48000:16:2, stream: 48000:16:2
Feb 18 12:33:37 orangepizero snapclient[1729]: Using default buffer_time: 80 ms, default fragments: 4
Feb 18 12:33:37 orangepizero snapclient[1729]: PCM name: hw:CARD=Zone1,DEV=0, sample rate: 48000 Hz, channels: 2, buffer time: 80000 us, periods: 4, period time: 20000 us, period frames: 960
Feb 18 12:33:37 orangepizero snapclient[1729]: No chunks available
Feb 18 12:33:37 orangepizero snapclient[1729]: Failed to get chunk
Feb 18 12:33:37 orangepizero snapclient[1729]: diff to server [ms]: 0.089
Feb 18 12:33:42 orangepizero snapclient[1729]: No chunk received for 5000ms. Closing ALSA.

# cat /lib/systemd/system/snapclient_zone1.service

[Unit]
Description=Snapcast client Zone 1
Documentation=man:snapclient(1)
Wants=avahi-daemon.service
After=network-online.target time-sync.target sound.target avahi-daemon.service

[Service]
EnvironmentFile=-/etc/default/snapclient1
ExecStart=/usr/bin/snapclient --logsink=system $SNAPCLIENT_OPTS
User=snapclient
Group=snapclient
Restart=on-failure

[Install]
WantedBy=multi-user.target

# cat /etc/default/snapclient1

START_SNAPCLIENT=true
SNAPCLIENT_OPTS="-h 127.0.0.1 --hostID 'Zona-1' -i 1 -s Zone1"

The "-s" parameter is set in udev rules:
# cat /etc/udev/rules.d/20-alsa-usb-cards.rules

SUBSYSTEM=="sound", KERNELS=="3-1.1",  ATTR{id}="Zone1"
SUBSYSTEM=="sound", KERNELS=="3-1.2",  ATTR{id}="Zone2"
SUBSYSTEM=="sound", KERNELS=="3-1.3",  ATTR{id}="Zone3"
SUBSYSTEM=="sound", KERNELS=="3-1.4",  ATTR{id}="Zone4"

Snapserver response when clients connect:

[Info] (Server) Hello from Zona-1, host: orangepizero, v0.26.0, ClientName: Snapclient, OS: Debian GNU/Linux 11 (bullseye), Arch: armv7l, Protocol version: 2
[Info] (Server) Hello from Zona-2#2, host: orangepizero, v0.26.0, ClientName: Snapclient, OS: Debian GNU/Linux 11 (bullseye), Arch: armv7l, Protocol version: 2
Info] (Server) Hello from Zona-3#3, host: orangepizero, v0.26.0, ClientName: Snapclient, OS: Debian GNU/Linux 11 (bullseye), Arch: armv7l, Protocol version: 2
[Info] (Server) Hello from Zona-4#4, host: orangepizero, v0.26.0, ClientName: Snapclient, OS: Debian GNU/Linux 11 (bullseye), Arch: armv7l, Protocol version: 2

So, the question is, how can I get the server to refer to clients as set in "--hostID", without adding "#2, #3 ..." ? I know that I can rename them in web interface but it would be much nicer if they'll just use the configured name.
I've tried with chname as suggested a few years ago, it works nice in CLI, but for some reason I can't get it run in init script.

TLDRL;
How to get the client names from "--hostID" to show up like "Kitchen" and "Bedroom", instead of "Kitchen#2" and "Bedroom#4"?