# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=362

[Latest](https://discourse.nodered.org/latest.md) · [Categories](https://discourse.nodered.org/categories.md) · [Tags](https://discourse.nodered.org/tags.md)

**Page:** 363

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## [NodeRED websockets and Nginx reverse proxy (subfolder)](https://discourse.nodered.org/t/nodered-websockets-and-nginx-reverse-proxy-subfolder/63998)

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**Author:** [@TheToto318](https://discourse.nodered.org/u/TheToto318)\
**Replies:** 9\
**Last updated:** [16 June 2022 17:03 UTC](https://discourse.nodered.org/t/nodered-websockets-and-nginx-reverse-proxy-subfolder/63998 "2022-06-16T17:03:36Z")

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Hello everyone, I'm writting this post because I'm trying to access nodeRED behind my Nginx reverse proxy, unfortunately I can't get the websockets to work. NodeRED load correctly but I get an error 502 and the below li…

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## [GET endpoint for aws4 signature Function works for everything except POST](https://discourse.nodered.org/t/get-endpoint-for-aws4-signature-function-works-for-everything-except-post/63753)

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**Author:** [@Landsailor](https://discourse.nodered.org/u/Landsailor)\
**Replies:** 1\
**Last updated:** [16 June 2022 16:57 UTC](https://discourse.nodered.org/t/get-endpoint-for-aws4-signature-function-works-for-everything-except-post/63753 "2022-06-16T16:57:36Z")

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Hi there! I have an API endpoint set up via node-red for the aws4 signature generator and it works for everything except POST requests. The response from AWS leads me to believe that the aws4 is not getting the body tex…

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## [Is there a way to implement a DDE server in a flow?](https://discourse.nodered.org/t/is-there-a-way-to-implement-a-dde-server-in-a-flow/64022)

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**Author:** [@aa777888-2](https://discourse.nodered.org/u/aa777888-2)\
**Replies:** 0\
**Last updated:** [16 June 2022 14:30 UTC](https://discourse.nodered.org/t/is-there-a-way-to-implement-a-dde-server-in-a-flow/64022 "2022-06-16T14:30:59Z")

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I have an old application, "App A", that queries another old application, "App B", using DDE (dynamic data exchange). I would like to replace App B, the DDE server, with a Node-RED flow. I can't seem to find any solutio…

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## [MSSQL Node - Causes NR to keep crashing](https://discourse.nodered.org/t/mssql-node-causes-nr-to-keep-crashing/64006)

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**Author:** [@SandeepA](https://discourse.nodered.org/u/SandeepA)\
**Replies:** 3\
**Last updated:** [16 June 2022 14:12 UTC](https://discourse.nodered.org/t/mssql-node-causes-nr-to-keep-crashing/64006 "2022-06-16T14:12:18Z")

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Hi , On MSSQL Node - i see below errors in my console log. Per past discussion for keeping MSSQL credentials across envs - we stored {MY\_USER} and {MY\_PASS} in cred file and have moved it other env. Problem is NR doesn…

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## [Delete " " in string](https://discourse.nodered.org/t/delete-in-string/64020)

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**Author:** [@Bruno1](https://discourse.nodered.org/u/Bruno1)\
**Replies:** 1\
**Last updated:** [16 June 2022 13:37 UTC](https://discourse.nodered.org/t/delete-in-string/64020 "2022-06-16T13:37:35Z")

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Hi everyone! I have a problem in my first function. In this case, my output of first function is "Moreira". But i want to remove " ", if not i can´t select the correct collum of my dataset . What you sujest? …

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## [Unknown node type "uc-iodataIn" and "uc-iodataOut"](https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920)

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**Author:** [@NodeNoobbb](https://discourse.nodered.org/u/NodeNoobbb)\
**Replies:** 4\
**Last updated:** [16 June 2022 13:00 UTC](https://discourse.nodered.org/t/unknown-node-type-uc-iodatain-and-uc-iodataout/61920 "2022-06-16T13:00:13Z")

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I am with a project in which there are some unknown nodes, "uc-iodataIn" and "uc-iodataOut", could someone tell me what library I have to use to make them work?

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## [Context Store damaged after Windows update](https://discourse.nodered.org/t/context-store-damaged-after-windows-update/17973)

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**Author:** [@Christian-Me](https://discourse.nodered.org/u/Christian-Me)\
**Replies:** 0\
**Last updated:** [14 November 2019 22:17 UTC](https://discourse.nodered.org/t/context-store-damaged-after-windows-update/17973 "2019-11-14T22:17:02Z")

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Hello, last night my windows server rebooted after the November update. After restart Node-RED did not started: Welcome to Node-RED =================== 14 Nov 07:27:22 - \[info\] Node-RED version: v1.0.1 14 Nov 07:27:22…

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## [Dynamic Subflow abstraction](https://discourse.nodered.org/t/dynamic-subflow-abstraction/64011)

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**Author:** [@Backboard7880](https://discourse.nodered.org/u/Backboard7880)\
**Replies:** 4\
**Last updated:** [16 June 2022 11:38 UTC](https://discourse.nodered.org/t/dynamic-subflow-abstraction/64011 "2022-06-16T11:38:39Z")

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Hi, Would it be possible to have a custom node which takes a Subflow name as a "topic" and then dynamically instanciate the corresponding Subflow and passes the payload to it? The solution im looking would abstract the…

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## [Connect to azure ad](https://discourse.nodered.org/t/connect-to-azure-ad/63966)

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**Author:** [@mebsn](https://discourse.nodered.org/u/mebsn)\
**Replies:** 2\
**Last updated:** [16 June 2022 11:35 UTC](https://discourse.nodered.org/t/connect-to-azure-ad/63966 "2022-06-16T11:35:35Z")

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hello guys, I am trying to connect(authorization) to azure ad directly from node red, but I can't figure out how to make it, I have seen some examples that use express.js but I need authentication to be done directly fro…

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## [Connecting to azure ad with node-red](https://discourse.nodered.org/t/connecting-to-azure-ad-with-node-red/64012)

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**Author:** [@mebsn](https://discourse.nodered.org/u/mebsn)\
**Replies:** 3\
**Last updated:** [16 June 2022 11:33 UTC](https://discourse.nodered.org/t/connecting-to-azure-ad-with-node-red/64012 "2022-06-16T11:33:55Z")

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so guys I have my custom website, where I have microsoft authentication (via azure ad) and I am using node-red to send requests to file maker, but I need to check before node-red communicates to file maker that the one w…

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## [Is it possible to add a tab to the "Edit flow drawer"?](https://discourse.nodered.org/t/is-it-possible-to-add-a-tab-to-the-edit-flow-drawer/63949)

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**Author:** [@Backboard7880](https://discourse.nodered.org/u/Backboard7880)\
**Replies:** 11\
**Last updated:** [16 June 2022 10:39 UTC](https://discourse.nodered.org/t/is-it-possible-to-add-a-tab-to-the-edit-flow-drawer/63949 "2022-06-16T10:39:30Z")

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Hello, As a user i would like to set extra properties to a flow. Does NodeRED allows it?

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## [How to download Zoom(us) recordings?](https://discourse.nodered.org/t/how-to-download-zoom-us-recordings/63997)

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**Author:** [@cimenta](https://discourse.nodered.org/u/cimenta)\
**Replies:** 0\
**Last updated:** [16 June 2022 06:53 UTC](https://discourse.nodered.org/t/how-to-download-zoom-us-recordings/63997 "2022-06-16T06:53:54Z")

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hi I have never use Node-RED yet. I sometimes use make for creating scenarios. But in general I find Node-RED better option. Currently I am looking at new scenario where I want to get a list of available Zoom recording…

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## [Default flow name](https://discourse.nodered.org/t/default-flow-name/63987)

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**Author:** [@Andrei](https://discourse.nodered.org/u/Andrei)\
**Replies:** 0\
**Last updated:** [15 June 2022 19:00 UTC](https://discourse.nodered.org/t/default-flow-name/63987 "2022-06-15T19:00:24Z")

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Today I did a change that confused me in regards to the default flow name. Since I use (sometimes) the Project feature and many times old environments I got different default flow names: flows\_pi.json, flows.json or flow…

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## [UDP multicast dynamic group and port](https://discourse.nodered.org/t/udp-multicast-dynamic-group-and-port/63938)

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**Author:** [@davidz](https://discourse.nodered.org/u/davidz)\
**Replies:** 2\
**Last updated:** [15 June 2022 18:39 UTC](https://discourse.nodered.org/t/udp-multicast-dynamic-group-and-port/63938 "2022-06-15T18:39:41Z")

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For the UDP out node, the destination ip and port number can be set up dynamically in UDP message and broadcast message. Is it possible to set up the group and port dynamically in multicast message? If the fields are le…

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## [Problem sending an array of objects as message payload](https://discourse.nodered.org/t/problem-sending-an-array-of-objects-as-message-payload/63983)

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**Author:** [@PuckeyP](https://discourse.nodered.org/u/PuckeyP)\
**Replies:** 4\
**Last updated:** [15 June 2022 17:58 UTC](https://discourse.nodered.org/t/problem-sending-an-array-of-objects-as-message-payload/63983 "2022-06-15T17:58:20Z")

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Hi All, I would like to have a function node sending an array of objects in the message payload'm having a problem getting an array of objects send as the payload of the function below var charge\_data=\[\]; //Array …

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## [Dynamic context scope for get function](https://discourse.nodered.org/t/dynamic-context-scope-for-get-function/63978)

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**Author:** [@krzydec](https://discourse.nodered.org/u/krzydec)\
**Replies:** 1\
**Last updated:** [15 June 2022 15:39 UTC](https://discourse.nodered.org/t/dynamic-context-scope-for-get-function/63978 "2022-06-15T15:39:56Z")

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Hello. I'm trying to write a simple function which will validate if variable exist in the context store. The function will accept two inputs: var\_name and scope and return the value if the variable exists. Is there a…

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## [Create a PDF with Node-Red and JSON](https://discourse.nodered.org/t/create-a-pdf-with-node-red-and-json/63975)

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**Author:** [@Mauri](https://discourse.nodered.org/u/Mauri)\
**Replies:** 6\
**Last updated:** [15 June 2022 13:46 UTC](https://discourse.nodered.org/t/create-a-pdf-with-node-red-and-json/63975 "2022-06-15T13:46:36Z")

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Hello everyone I want to generate a pdf-file in Node-Red and use "node-red-contrib-pdfmake". With the inject node I enter a json "content". Now my question, how do I create a layout in this file and can I add more text…

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## [Update : missing nodes](https://discourse.nodered.org/t/update-missing-nodes/63960)

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**Author:** [@Ives25](https://discourse.nodered.org/u/Ives25)\
**Replies:** 4\
**Last updated:** [15 June 2022 13:16 UTC](https://discourse.nodered.org/t/update-missing-nodes/63960 "2022-06-15T13:16:06Z")

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Hello, I just performed the Node-Red 12.0.2 update (Home Assistant) and I get the message "Flows stopped due to missing types: stoptimer". What should be done to recover these nodes?

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## [Can only recieve one MQTT message](https://discourse.nodered.org/t/can-only-recieve-one-mqtt-message/63727)

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**Author:** [@KristoferKrisberg](https://discourse.nodered.org/u/KristoferKrisberg)\
**Replies:** 14\
**Last updated:** [15 June 2022 12:03 UTC](https://discourse.nodered.org/t/can-only-recieve-one-mqtt-message/63727 "2022-06-15T12:03:12Z")

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Hello NodeRED community. I hope everyone is doing well. I am new to MQTT, but it seems very useful! I am having some trouble with it, but let me explain my situation first. I have a RaspberryPi running DietPi, since thi…

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## [How can I know port number at the function node](https://discourse.nodered.org/t/how-can-i-know-port-number-at-the-function-node/63597)

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**Author:** [@simmani5](https://discourse.nodered.org/u/simmani5)\
**Replies:** 10\
**Last updated:** [15 June 2022 10:53 UTC](https://discourse.nodered.org/t/how-can-i-know-port-number-at-the-function-node/63597 "2022-06-15T10:53:52Z")

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I want to recognize the node-red execution argc or arcv option ex) -p port number at the function node. Why ? I wnat to use one flows.js run it differently with argv or port number like this. // ex)) // .node…

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## [Retrieve alarms already fired with node-red-contrib-opcua](https://discourse.nodered.org/t/retrieve-alarms-already-fired-with-node-red-contrib-opcua/63962)

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**Author:** [@Clarisse1](https://discourse.nodered.org/u/Clarisse1)\
**Replies:** 0\
**Last updated:** [15 June 2022 09:44 UTC](https://discourse.nodered.org/t/retrieve-alarms-already-fired-with-node-red-contrib-opcua/63962 "2022-06-15T09:44:03Z")

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Hello ! I use node-red-contrib-opcua event and client to see events and alarms. But I don't find how to retrieve alarms and events that are already fire when i start the opcua event... So I tried to use opcua method wit…

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## ["No response object" after split/join](https://discourse.nodered.org/t/no-response-object-after-split-join/63919)

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**Author:** [@sfrye](https://discourse.nodered.org/u/sfrye)\
**Replies:** 6\
**Last updated:** [15 June 2022 09:21 UTC](https://discourse.nodered.org/t/no-response-object-after-split-join/63919 "2022-06-15T09:21:28Z")

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I'm trying my first steps with Node-RED. I would like to use the split and join nodes in an HTTP flow, but the res property gets lost on join, so my flow fails with the HTTP response node complaining about "no response …

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## [Efficient way to set only a specific property of global variable](https://discourse.nodered.org/t/efficient-way-to-set-only-a-specific-property-of-global-variable/63900)

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**Author:** [@n300](https://discourse.nodered.org/u/n300)\
**Replies:** 10\
**Last updated:** [15 June 2022 09:16 UTC](https://discourse.nodered.org/t/efficient-way-to-set-only-a-specific-property-of-global-variable/63900 "2022-06-15T09:16:11Z")

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Hi there, here is my challange: I have a key/value object with around 30-50 k/v pairs. The values get updated "serially" one by one. My straight forward way is e.g. var myglobalvar = global.get('myObject'); myglobalv…

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## [Sigh sorry another basic question](https://discourse.nodered.org/t/sigh-sorry-another-basic-question/63831)

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**Author:** [@davec1001](https://discourse.nodered.org/u/davec1001)\
**Replies:** 24\
**Last updated:** [15 June 2022 08:32 UTC](https://discourse.nodered.org/t/sigh-sorry-another-basic-question/63831 "2022-06-15T08:32:20Z")

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I am trying to get to grips with uibuilder. None of the examples or gists work. The browser seems unable to locate the script src files for vendor libraries (even though I have installed) eg \<script src="vendor/m…

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## [Send email to outlook from node red](https://discourse.nodered.org/t/send-email-to-outlook-from-node-red/63954)

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**Author:** [@NeetaJ](https://discourse.nodered.org/u/NeetaJ)\
**Replies:** 5\
**Last updated:** [15 June 2022 08:08 UTC](https://discourse.nodered.org/t/send-email-to-outlook-from-node-red/63954 "2022-06-15T08:08:48Z")

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Hi Everyone, I need to know if we can send email to another domain in outlook from node red. for ex: firstname.lastname@global.mydomain kindly share some ideas

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## [Is there a way for Node-RED to communicate with Q-SYS Enterprise Manager?](https://discourse.nodered.org/t/is-there-a-way-for-node-red-to-communicate-with-q-sys-enterprise-manager/63936)

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**Author:** [@Wilay](https://discourse.nodered.org/u/Wilay)\
**Replies:** 2\
**Last updated:** [15 June 2022 08:04 UTC](https://discourse.nodered.org/t/is-there-a-way-for-node-red-to-communicate-with-q-sys-enterprise-manager/63936 "2022-06-15T08:04:32Z")

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I'm confused as to how it's possible for both platforms to communicate together, both for Node-RED to send data and values to Q-SYS, and the other way around as well.

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## [How can I change the flow view in javascript?](https://discourse.nodered.org/t/how-can-i-change-the-flow-view-in-javascript/63880)

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**Author:** [@HuOliveiraWork](https://discourse.nodered.org/u/HuOliveiraWork)\
**Replies:** 6\
**Last updated:** [15 June 2022 01:21 UTC](https://discourse.nodered.org/t/how-can-i-change-the-flow-view-in-javascript/63880 "2022-06-15T01:21:03Z")

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Hi everybody! I'm configuring some data in 2 different flows, and my goal is to change my flow when the user clicks in a button, is it possible to do that inside a function? Thanks in advance!

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## [Segment fault error occurs when deploy node-red-node-serial in openWRT](https://discourse.nodered.org/t/segment-fault-error-occurs-when-deploy-node-red-node-serial-in-openwrt/63842)

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**Author:** [@vincentlin\_artt](https://discourse.nodered.org/u/vincentlin_artt)\
**Replies:** 10\
**Last updated:** [15 June 2022 00:49 UTC](https://discourse.nodered.org/t/segment-fault-error-occurs-when-deploy-node-red-node-serial-in-openwrt/63842 "2022-06-15T00:49:47Z")

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Hi, experts: First, I'm new for this forum but loved node-RED very much and used it for education years. Here is my environment: raspberry pi cm4(8G/8G) with a motherboard. opwnWRT kernel version:5.10.113 version of …

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## [What does unitid and address in modbus node mean?](https://discourse.nodered.org/t/what-does-unitid-and-address-in-modbus-node-mean/63890)

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**Author:** [@SP-Mushrooms](https://discourse.nodered.org/u/SP-Mushrooms)\
**Replies:** 3\
**Last updated:** [14 June 2022 20:24 UTC](https://discourse.nodered.org/t/what-does-unitid-and-address-in-modbus-node-mean/63890 "2022-06-14T20:24:44Z")

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I have a qn I am trying to use write modbus to a modbus relay to on and off I can't get it to work. It has a defalt address of 0xFF (255) when I have a unitid other that 0 I get a error like But when I put unitid of…

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## [How to link Logitech Rally Plus system with Node-RED](https://discourse.nodered.org/t/how-to-link-logitech-rally-plus-system-with-node-red/63935)

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**Author:** [@Wilay](https://discourse.nodered.org/u/Wilay)\
**Replies:** 0\
**Last updated:** [14 June 2022 19:53 UTC](https://discourse.nodered.org/t/how-to-link-logitech-rally-plus-system-with-node-red/63935 "2022-06-14T19:53:48Z")

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I'm sorry, I'm absolutely new to Node-RED. I'm curious if anyone has an idea as to how, if possible, one could communicate two-ways with the Logitech Rally Plus kit via Node-RED. Technically, I believe you're supposed to…

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