undefined key causes Node-RED crash

[rcarmo]

I'm coming across a situation where the node should report an error without crashing the entire Node-RED process:

TypeError: Cannot read property 'sendEvent' of undefined

This happens when I don't have a SharedKey defined for the connection and undefined gets passed to the node:

26 Dec 14:43:11 - [info] [azureiothub:Stream IoT Hub] Connected to Azure IoT Hub.
26 Dec 14:43:11 - [info] [azureiothub:Stream IoT Hub] Message is pending. Sending it to Azure IoT Hub.
26 Dec 14:43:11 - [info] [azureiothub:Stream IoT Hub] Sending Message to Azure IoT Hub :
   Payload: "{\"battery\":99,\"voltage\":3005,\"linkquality\":0,\"angle_x\":3,\"angle_y\":1,\"angle_z\":87,\"angle_x_absolute\":87,\"angle_y_absolute\":89,\"unknown_data\":3932160,\"action\":\"vibration\"}"
26 Dec 14:43:11 - [info] [filter:filter for STB IP] nr-regexp-filter: message dropped (not matching the '192.168.1.66' regular expression)
26 Dec 14:43:11 - [info] [azureiothub:Stream IoT Hub] Message sent.
26 Dec 14:43:12 - [info] [azureiothub:Stream IoT Hub] JSON
26 Dec 14:43:12 - [info] [azureiothub:Stream IoT Hub] Connection to IoT Hub not established or configuration changed. Reconnecting.
26 Dec 14:43:12 - [info] [azureiothub:Stream IoT Hub] Disconnecting from Azure IoT Hub
26 Dec 14:43:12 - [info] [azureiothub:Stream IoT Hub] Connecting to Azure IoT Hub:
   Protocol: mqtt
   Connection string :HostName=stream.azure-devices.net;DeviceId=router0;SharedAccessKey=undefined
26 Dec 14:43:12 - [error] [azureiothub:Stream IoT Hub] Could not connect: Connection refused: Not authorized
26 Dec 14:43:12 - [info] [azureiothub:Stream IoT Hub] Connected to Azure IoT Hub.
26 Dec 14:43:12 - [info] [azureiothub:Stream IoT Hub] Message is pending. Sending it to Azure IoT Hub.
26 Dec 14:43:12 - [info] [azureiothub:Stream IoT Hub] Sending Message to Azure IoT Hub :
   Payload: "{\"state\":true,\"linkquality\":0,\"description\":\"0/REDACTED\",\"type\":\"COORD\",\"rssi\":1}"
26 Dec 14:43:12 - [red] Uncaught Exception:
26 Dec 14:43:12 - TypeError: Cannot read property 'sendEvent' of undefined
    at sendData (/home/user/.npm-packages/lib/node_modules/node-red-contrib-azure-iot-hub/azureiothub.js:38:16)
    at /home/user/.npm-packages/lib/node_modules/node-red-contrib-azure-iot-hub/azureiothub.js:86:21
    at /home/user/.npm-packages/lib/node_modules/node-red-contrib-azure-iot-hub/node_modules/azure-iot-device/lib/client.js:240:9
    at Mqtt.<anonymous> (/home/user/.npm-packages/lib/node_modules/node-red-contrib-azure-iot-hub/node_modules/azure-iot-device-mqtt/lib/mqtt.js:45:17)
    at MqttClient.errCallback (/home/user/.npm-packages/lib/node_modules/node-red-contrib-azure-iot-hub/node_modules/azure-iot-mqtt-base/lib/mqtt.js:75:7)
    at emitNone (events.js:111:20)
    at MqttClient.emit (events.js:208:7)
    at TLSSocket.f (/home/user/.npm-packages/lib/node_modules/node-red-contrib-azure-iot-hub/node_modules/once/once.js:25:25)
    at TLSSocket.onfinish (/home/user/.npm-packages/lib/node_modules/node-red-contrib-azure-iot-hub/node_modules/end-of-stream/index.js:30:27)
    at emitNone (events.js:111:20)
    at TLSSocket.emit (events.js:208:7)
    at finishMaybe (_stream_writable.js:613:14)
    at stream._final (_stream_writable.js:591:5)
    at TLSSocket.Socket._final (net.js:300:5)
    at callFinal (_stream_writable.js:584:10)
    at _combinedTickCallback (internal/process/next_tick.js:139:11)
26 Dec 14:43:27 - [info] 

[Bacto]

Hi,

I got the same problem today:

18 Dec 11:45:46 - [error] [azureiothub:Azure IoT Hub] Could not connect: Connection refused: Not authorized
18 Dec 11:45:46 - [red] Uncaught Exception:
18 Dec 11:45:46 - TypeError: Cannot read property 'sendEvent' of undefined
    at sendData (/persistent/storage/node_modules/node-red-contrib-azure-iot-hub/azureiothub.js:38:16)
    at /persistent/storage/node_modules/node-red-contrib-azure-iot-hub/azureiothub.js:86:21
    at /persistent/storage/node_modules/azure-iot-device/lib/client.js:240:9
    at Mqtt.<anonymous> (/persistent/storage/node_modules/azure-iot-device-mqtt/lib/mqtt.js:45:17)
    at MqttClient.errCallback (/persistent/storage/node_modules/azure-iot-mqtt-base/lib/mqtt.js:75:7)
    at MqttClient.emit (events.js:327:22)
    at TLSSocket.f (/persistent/storage/node_modules/once/once.js:25:25)
    at TLSSocket.onfinish (/persistent/storage/node_modules/end-of-stream/index.js:31:27)
    at TLSSocket.emit (events.js:315:20)
    at finishMaybe (_stream_writable.js:639:14)
    at ShutdownWrap.callback (_stream_writable.js:616:5)
    at ShutdownWrap.afterShutdown [as oncomplete] (net.js:432:8)

It seems the node doesn't catch errors like it should (see https://nodered.org/docs/user-guide/handling-errors#uncatchable-errors).

The problem is that Node-RED quits because of this error.

Is it something that can be fixed?

Thanks,
Adrien