Roon Core Node crashing Node Red

[meehab]

I have set up the Roon Core node as per instructions and added the sample flow. I saw an extension appear in Roon, which I enabled.

Adding Debug nodes to the sample flow, I see data flowing, and I can see MQTT topics populating as well. So everything seems to be working.

However, after initial Node-Red startup, if I click 'Deploy', Node-Red will crash. My Node-Red (v2.1.4) runs in a docker, and if I inspect the log, I see that Roon Core is causing an error that seems to be the cause of the crash. If I restart Node-Red docker, all is well, until the next deploy.

Here's the relevant portion of the log file that shows the roon-core node crashing after the deploy command stops and restarts node and flows;

8 Dec 21:21:01 - [info] Stopping flows
8 Dec 21:21:01 - [info] [udp out:64342634.2e1408] udp output stopped
8 Dec 21:21:01 - [info] [udp out:230fb82.e504748] udp output stopped
8 Dec 21:21:01 - [info] [udp in:770903fa.bb1aec] udp listener stopped
8 Dec 21:21:01 - [info] [denon-in:Marantz] Closed
8 Dec 21:21:01 - [info] [denon-connection:AV8805] Closed
8 Dec 21:21:01 - [info] [denon-connection:AV8805] Disconnected
8 Dec 21:21:01 - [info] Stopped flows
8 Dec 21:21:01 - [info] Starting flows
8 Dec 21:21:01 - [info] Started flows
8 Dec 21:21:01 - [info] [udp in:770903fa.bb1aec] udp listener at 0.0.0.0:10000
8 Dec 21:21:01 - [info] [mqtt-broker:mqtt local broker] Connected to broker: presencedetector@mqtt://192.168.1.199:1883
8 Dec 21:21:01 - [info] [mqtt-broker:c9cd3208.c4535] Connected to broker: mqtt://192.168.1.199:1883
8 Dec 21:21:01 - [info] [mqtt-broker:8d10f29d.66b98] Connected to broker: mqtt://localhost:1883
-> REQUEST 0 com.roonlabs.registry:1/info
<- COMPLETE 0 Success {"core_id":"e2634122-d408-4430-9584-59ca7937fd8e","display_name":"UNRAID","display_version":"1.8 (build 850) stable"}
-> REQUEST 1 com.roonlabs.registry:1/register {"extension_id":"com.jac459.nodeRedRoon","display_name":"Roon Core","display_version":"0.9.9","publisher":"jac459","email":"[email protected]","required_services":["com.roonlabs.transport:2","com.roonlabs.image:1","com.roonlabs.browse:1"],"optional_services":[],"provided_services":["com.roonlabs.status:1","com.roonlabs.pairing:1","com.roonlabs.ping:1"],"website":"https://github.com/jac459/roon-node-red","token":"c034a86f-7d99-439a-8c85-32bd438e3a7d"}
MOO: empty message received
-> REQUEST 22 com.roonlabs.transport:2/get_zones
8 Dec 21:21:01 - [red] Uncaught Exception:
8 Dec 21:21:01 - [error] TypeError: Cannot read property 'send' of undefined

at Transport.send (/data/node_modules/node-roon-api/transport-websocket.js:32:13)
at Moo.send_request (/data/node_modules/node-roon-api/moo.js:75:24)
at RoonApiTransport.get_zones (/data/node_modules/node-roon-api-transport/lib.js:339:19)
at /data/node_modules/roon-core/roon.js:33:31
at /data/node_modules/node-roon-api-transport/lib.js:375:41
at /data/node_modules/node-roon-api/moo.js:27:37
at /data/node_modules/node-roon-api/moo.js:204:10
at Array.forEach (<anonymous>)
at Moo.clean_up (/data/node_modules/node-roon-api/moo.js:202:32)
at Transport.moo.transport.onclose (/data/node_modules/node-roon-api/lib.js:384:13)
at Transport.close (/data/node_modules/node-roon-api/transport-websocket.js:43:14)
at WebSocket.Transport.ws.onmessage (/data/node_modules/node-roon-api/transport-websocket.js:24:18)
at WebSocket.onMessage (/data/node_modules/ws/lib/event-target.js:120:16)
at WebSocket.emit (events.js:400:28)
at Receiver.receiverOnMessage (/data/node_modules/ws/lib/websocket.js:800:20)
at Receiver.emit (events.js:400:28)
at Receiver.dataMessage (/data/node_modules/ws/lib/receiver.js:413:14)
at Receiver.getData (/data/node_modules/ws/lib/receiver.js:352:17)
at Receiver.startLoop (/data/node_modules/ws/lib/receiver.js:138:22)
at Receiver._write (/data/node_modules/ws/lib/receiver.js:74:10)
at writeOrBuffer (internal/streams/writable.js:358:12)
at Receiver.Writable.write (internal/streams/writable.js:303:10)
at Socket.socketOnData (/data/node_modules/ws/lib/websocket.js:875:35)
at Socket.emit (events.js:400:28)
at addChunk (internal/streams/readable.js:293:12)
at readableAddChunk (internal/streams/readable.js:267:9)
at Socket.Readable.push (internal/streams/readable.js:206:10)
at TCP.onStreamRead (internal/stream_base_commons.js:188:23)
npm ERR! code ELIFECYCLE
npm ERR! errno 1
npm ERR! [email protected] start: `node $NODE_OPTIONS node_modules/node-red/red.js $FLOWS "--userDir" "/data"`
npm ERR! Exit status 1