According to the Azure docs for the message schema for telemetry data you need to set the "iothub-content-type" and "iothub-content-encoding" systemProperties otherwise the body data will be base64 encoded and will require decoding to be used. This has an unwanted side affect of not allowing you to use body data to control routing in Azure iot side.

    "systemProperties": {
      "iothub-content-type": "application/json",
      "iothub-content-encoding": "utf-8",
      ...

I was wondering if there is a way to verify that the message that I want to send from Node-Red Flow is also received by the Azure environment or not. At the moment the only response is: message-sent, but I don't know which message is sent. And if the message has not been not sent the Azure-Iot-Hub gives an error and brakes.
I am receiving many messages in my MQTT broker and I want to be sure all the messages are send and if they not have been send, they will be resend in a later moment.
Would it be an idea to add to the msg.payload also the data that has been succesfully send to azure?
And is it possible to catch the error's generated by the Azure environment by another node? The Catch node does not seem to do the trick.

Hi, sorry if my question is dumb. I am a beginner in this but I am using this node for a project and I need to say what kind of protocol is used in this node, like HTTP, MQTT...
Can anyone tell me and also show me where I can find this in the code? I tried but I don't really understand. Thanks!

azureblobstorage.js has typo/bug in row 170.

When downloadBlob thorws error the module crashes because of typo:
blobservice.getBlobToLocalFile(containerName, blobName, fileName, function (error2) { if (error2) { node.log(error); }

Row 170 should be node.log(error2).

Path to file is node-red-contrib-azure/blob-storage/azureblobstorage.js

I can provide PR to this if you want.

I am having trouble with this set of node red code however I can get this one working. There seems to be a registry conflict between the two. Can you please tell me which one I should be using?

node-red-contrib-azureiothubnode
or
node-red-contrib-azure-iot-hub

Hi,

We're currently using the blob storage component to fetch files from azure.

Seems it's not possible to fetch blob files by dynamically setting their container and blob name through the "msg" object.

I understand that the account name and account key should be inside the credential file, but is that really necessary to save fixed values of the container name and the blob name in credential too ?

Thanks
Jac

Hi,
Using this node, I'm getting an uncaught exception that makes node red restart:

Jan  6 21:23:53 raspberrypi Node-RED[3397]: 6 Jan 21:23:53 - [info] [Table Storage:Azure Table Storage] entity created successfully
Jan  6 21:23:53 raspberrypi Node-RED[3397]: 6 Jan 21:23:53 - [red] Uncaught Exception:
Jan  6 21:23:53 raspberrypi Node-RED[3397]: 6 Jan 21:23:53 - TypeError: Parameter entityDescriptor.RowKey._ for function entityOperation should be a string
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at ArgumentValidator.stringAllowEmpty (/home/pi/.node-red/node_modules/azure-storage/lib/common/util/validate.js                                                  :434:13)
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at /home/pi/.node-red/node_modules/azure-storage/lib/services/table/tableservice.js:1274:9
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at Object.validateArgs (/home/pi/.node-red/node_modules/azure-storage/lib/common/util/validate.js:495:3)
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at TableService._performEntityOperation (/home/pi/.node-red/node_modules/azure-storage/lib/services/table/tables                                                  ervice.js:1262:12)
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at TableService.insertEntity (/home/pi/.node-red/node_modules/azure-storage/lib/services/table/tableservice.js:9                                                  79:8)
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at senddata (/home/pi/.node-red/node_modules/node-red-contrib-azure-table-storage/azuretablestorage.js:47:32)
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at /home/pi/.node-red/node_modules/node-red-contrib-azure-table-storage/azuretablestorage.js:163:17
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at /home/pi/.node-red/node_modules/azure-storage/lib/services/table/tableservice.js:592:7
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at finalCallback (/home/pi/.node-red/node_modules/azure-storage/lib/services/table/tableservice.js:1225:7)
Jan  6 21:23:53 raspberrypi Node-RED[3397]:     at /home/pi/.node-red/node_modules/azure-storage/lib/common/services/storageserviceclient.js:961:11
Jan  6 21:23:54 raspberrypi systemd[1]: nodered.service: Main process exited, code=exited, status=1/FAILURE
Jan  6 21:23:54 raspberrypi systemd[1]: nodered.service: Failed with result 'exit-code'.
Jan  6 21:23:54 raspberrypi systemd[1]: nodered.service: Service RestartSec=100ms expired, scheduling restart.
Jan  6 21:23:54 raspberrypi systemd[1]: nodered.service: Scheduled restart job, restart counter is at 10.
Jan  6 21:23:54 raspberrypi systemd[1]: Stopped Node-RED graphical event wiring tool.
Jan  6 21:23:54 raspberrypi systemd[1]: Started Node-RED graphical event wiring tool.
Jan  6 21:24:23 raspberrypi Node-RED[3427]: 6 Jan 21:24:23 - [info]
Jan  6 21:24:23 raspberrypi Node-RED[3427]: Welcome to Node-RED
Jan  6 21:24:23 raspberrypi Node-RED[3427]: ===================
Jan  6 21:24:23 raspberrypi Node-RED[3427]: 6 Jan 21:24:23 - [info] Node-RED version: v1.0.3
Jan  6 21:24:23 raspberrypi Node-RED[3427]: 6 Jan 21:24:23 - [info] Node.js  version: v10.18.0
Jan  6 21:24:23 raspberrypi Node-RED[3427]: 6 Jan 21:24:23 - [info] Linux 4.19.75+ arm LE
Jan  6 21:24:39 raspberrypi Node-RED[3427]: 6 Jan 21:24:39 - [info] Loading palette nodes

This project is awesome; thank you! I've tied it into my RaspberryPi which processes an image on a reed-switch trigger (front gate) and it analyzes the image - sending the results to Slack (with Redbot for Nodered!)

Would it be possible to add another node (or drop down) for OCR / text recognition? I'm hoping to pull number plates and warn if not recognised.

Found this online, and their demo on the landing page seems to work well too:
https://docs.microsoft.com/en-us/azure/cognitive-services/computer-vision/quickstarts/node-print-text

thanks again

westus api endpoint will not work with cognitive services instances and API keys issued outside US.

Valid keys from UK Azure Computer Vision subscription are rejected by westus -- need to be select endpoint to match subscription
e.g
westeurope.api.cognitive.microsoft.com for UK subscription
northeurope.api.cognitive.microsoft.com for DE subscription
etc
please add a select to the config menu for the API endpoint

Now, following three nodes that related to IoT Hub seem to exist.

• node-red-contrib-azureiothubnode
  • The code of this seems to be included in another repository.
• node-red-contrib-azure-iot-hub
  • The code of this seems to be in this repository, https://github.com/Azure/node-red-contrib-azure/tree/master/iot-hub.
• Only code to use IoT Device SDK exists in this repository, https://github.com/Azure/node-red-contrib-azure/tree/master/iot-device.

I'd like to make unify nodes that related IoT Hub into one official node to become to use easier to use by users. Do you have a plan to do that? For example, I'd like to know which one is that you'd like to use as a base to unify.

Then, this issue seems to be related to #17.

Azure IoT Hub node does not pass JSON objects to Azure using MQTT protocol.
It errors out with: "TypeError: "string" must be a string, Buffer, or ArrayBuffer"

I can send JSON objects to Azure by using a MQTT node with a SAS token, and it shows up in Azure:

Is this intended behaviour?

This can be replicated by creating an inject node with the following as a string or JSON (substitute with active key and correct deviceID) and pointing it to Azure IoT Hub:

{"deviceID":"NODE-RED","key":"xxxxxx","protocol":"mqtt","data":{"Speed":"25"}}

Thanks in advance!

Can you please remove oir mark this as replaced by

https://github.com/Azure/azure-iot-sdk-node/tree/master/device/node-red

Wasted a bunch of time on old code .. :(

As noted in this Azure document (https://docs.microsoft.com/en-us/azure/storage/blobs/storage-blob-static-website), the container name used for static website hosting is "$web". However, when you attempt to use that name with the Save Blob node, it throws a SyntaxError: Container name format is incorrect.

Passing a full filepath + filename as a msg.payload to the Azure Save Blob Storage node places the desired file into Azure; however, it is appending the filepath to the Storage Container Name causing the file to be placed several levels deeper in the hierarchy than desired. It is causing the automatic addition of the unnecessary, and empty virtual folders.

Example: local filepath = /home/pi/Images
local filename = lastimage.jpeg
msg.payload = "/home/pi/Images/lastimage.jpeg"
storage container = mystoragecontainer

As-Is the node will place the file in Azure as = /mystoragecontainer/home/pi/images/lastimage.jpeg
To-Be the node will place the file in Azure as = /mystoragecontainer/lastimage.jpeg

Azure Portal, Azure Storage Explorer, and Azure Image Explorer all do not work with the deep virtual folder structure. Suggest that localfilepath be stripped from the localfilename before sending to Azure.

nodered 0.19.4
node-red-contrib-cognitive-services 0.5.3
Using Text-To Speech Node kills nodered, exiting with

2 Oct 13:18:45 - TypeError: Cannot set property headersSent of # which has only a getter
at _clone (/usr/lib/node_modules/node-red/node_modules/clone/clone.js:162:16)
at _clone (/usr/lib/node_modules/node-red/node_modules/clone/clone.js:162:18)
at _clone (/usr/lib/node_modules/node-red/node_modules/clone/clone.js:162:18)
at _clone (/usr/lib/node_modules/node-red/node_modules/clone/clone.js:162:18)
at _clone (/usr/lib/node_modules/node-red/node_modules/clone/clone.js:162:18)
at _clone (/usr/lib/node_modules/node-red/node_modules/clone/clone.js:162:18)
at _clone (/usr/lib/node_modules/node-red/node_modules/clone/clone.js:162:18)
at _clone (/usr/lib/node_modules/node-red/node_modules/clone/clone.js:162:18)
at clone (/usr/lib/node_modules/node-red/node_modules/clone/clone.js:202:10)
at Object.cloneMessage (/usr/lib/node_modules/node-red/red/runtime/util.js:55:13)
at textToSpeechNode.Node.send (/usr/lib/node_modules/node-red/red/runtime/nodes/Node.js:177:61)
at /home/pi/.node-red/node_modules/node-red-contrib-cognitive-services/cognitive-services/textToSpeech.js:101:11
at Request._callback (/home/pi/.node-red/node_modules/node-red-contrib-cognitive-services/cognitive-services/textToSpeech.js:34:5)
at Request.self.callback (/home/pi/.node-red/node_modules/request/request.js:344:22)
at emitTwo (events.js:126:13)
at Request.emit (events.js:214:7)

There are important files that Microsoft projects should all have that are not present in this repository. A pull request has been opened to add the missing file(s). When the pr is merged this issue will be closed automatically.

Microsoft teams can learn more about this effort and share feedback within the open source guidance available internally.

Merge this pull request

TRATÉ DE ENVIAR DATOS DESDE EL NODE RED, PERO NO HE PODIDO REALIZARLO, ALGUIEN PODRÍA APOYARME CON ESTA TRAMA DE ENVÍO, EN EL CUAL SE DEBE ENVIAR 10 VALORES A TRAVÉS DE LA ESTRUCTURA JSON.
ESTUVE VIENDO UNN VIDEO DE YOUTUBE PERO NO HE PODIDO ESTABLECER LA COMUNICACIÓN.
LINK DE VIDEO:https://www.youtube.com/watch?v=a3HhgOuELoI

ADJUNTO FOTO DE LA TRAMA PARA EL ENVÍO.

GRACIAS A TODOS

the message confirming a blob was uploaded is saved incorrectly to 'msg' and not msg.payload

Blob '202005171100_zero13.mp3' uploaded in container 'samples'

This makes it unsable in node-red.