# General

**URL:** https://discourse.nodered.org/c/general/7.md?page=610

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

**Page:** 611

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## [Websocket server (WSS) node connection keeps dropping](https://discourse.nodered.org/t/websocket-server-wss-node-connection-keeps-dropping/40276)

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**Author:** [@relic](https://discourse.nodered.org/u/relic)\
**Replies:** 1\
**Last updated:** [3 February 2021 01:46 UTC](https://discourse.nodered.org/t/websocket-server-wss-node-connection-keeps-dropping/40276 "2021-02-03T01:46:31Z")

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Hello, I've been given a specific task at my job where I have to check different pieces of information of a list of items. Currently, I can connect to the WSS of where I work and I'm able to check about 300 items at a …

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## [Node-Red won't run](https://discourse.nodered.org/t/node-red-wont-run/40031)

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**Author:** [@prf](https://discourse.nodered.org/u/prf)\
**Replies:** 19\
**Last updated:** [3 February 2021 00:50 UTC](https://discourse.nodered.org/t/node-red-wont-run/40031 "2021-02-03T00:50:17Z")

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I've got myself into a bit of a bind. Node-Red won't start and instead displays a repeating error message: \[error\] \[ui\_guage: a long number\] TypeError: Cannot read property. I assume that this is caused by a fault in t…

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## [Implicit list of users in adminAuth](https://discourse.nodered.org/t/implicit-list-of-users-in-adminauth/9813)

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**Author:** [@stgv](https://discourse.nodered.org/u/stgv)\
**Replies:** 15\
**Last updated:** [3 February 2021 00:29 UTC](https://discourse.nodered.org/t/implicit-list-of-users-in-adminauth/9813 "2021-02-03T00:29:51Z")

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I'm looking into securing my company's Node-RED setup to only allow access to users in a specific GitLab group. I found a passport strategy for gitlab-oauth, which should work well enough with the strategy-type adminAuth …

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## [Telegram output with bold text and table](https://discourse.nodered.org/t/telegram-output-with-bold-text-and-table/40215)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 8\
**Last updated:** [2 February 2021 22:25 UTC](https://discourse.nodered.org/t/telegram-output-with-bold-text-and-table/40215 "2021-02-02T22:25:58Z")

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Hello i found out to send telegram text in Bold you have to put them between asterix bold if i do this in my node i got a syntax error, why? it is also possible to add some url and a table? \[{"id":"31e1314d.271b4e","…

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## [How can i stop and then restart the Node-Red application with runtime API?](https://discourse.nodered.org/t/how-can-i-stop-and-then-restart-the-node-red-application-with-runtime-api/40268)

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**Author:** [@Norberg95](https://discourse.nodered.org/u/Norberg95)\
**Replies:** 0\
**Last updated:** [2 February 2021 21:44 UTC](https://discourse.nodered.org/t/how-can-i-stop-and-then-restart-the-node-red-application-with-runtime-api/40268 "2021-02-02T21:44:22Z")

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I would like to close every flow and then restart them from the runtime API. I am testing this code, but it crashes. RED.start(); setTimeout(() =\> { console.log('RED starting to stop'); RED.stop().then(() =\> …

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## [Learning UDP message](https://discourse.nodered.org/t/learning-udp-message/40055)

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**Author:** [@rogier](https://discourse.nodered.org/u/rogier)\
**Replies:** 6\
**Last updated:** [2 February 2021 19:15 UTC](https://discourse.nodered.org/t/learning-udp-message/40055 "2021-02-02T19:15:12Z")

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Can anyone te me how this works / use it in Node Red in the 2 picture below you see a snap of wire shark. in picture 1 i ask (with company software) 010101 from a DDC device (red understripe). in picture 2 i ask (with…

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## [Websocket Timeout Issue/Phoscon](https://discourse.nodered.org/t/websocket-timeout-issue-phoscon/37942)

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**Author:** [@ScottJ2505](https://discourse.nodered.org/u/ScottJ2505)\
**Replies:** 2\
**Last updated:** [2 February 2021 18:32 UTC](https://discourse.nodered.org/t/websocket-timeout-issue-phoscon/37942 "2021-02-02T18:32:26Z")

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Hello, I am using a Raspberry Pi 3 with Node Red/DeCONZ/Phoscon Apps to monitor and control home automation devices wirelessly using the Zigbee network and ConBee II. Every so often on the Node Red console I see the fol…

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## [UI Builder - Client Identification (HTTPHEADERS)](https://discourse.nodered.org/t/ui-builder-client-identification-httpheaders/40184)

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**Author:** [@cbel](https://discourse.nodered.org/u/cbel)\
**Replies:** 3\
**Last updated:** [2 February 2021 18:17 UTC](https://discourse.nodered.org/t/ui-builder-client-identification-httpheaders/40184 "2021-02-02T18:17:43Z")

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I've been using UI-Builder to create an interface that allow users to enter data which is sent be to another backend server using MQTT. Everything is properly working, but I am facing an issue which I can't seem to resol…

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## [NFC-Data from iPhone to Node-red](https://discourse.nodered.org/t/nfc-data-from-iphone-to-node-red/40178)

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**Author:** [@Eberhard](https://discourse.nodered.org/u/Eberhard)\
**Replies:** 5\
**Last updated:** [2 February 2021 18:11 UTC](https://discourse.nodered.org/t/nfc-data-from-iphone-to-node-red/40178 "2021-02-02T18:11:52Z")

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I want to transfer a data-set, read from a NFC-tag with an iPhone X, into node-red. Is there a way to transfer? If 'yes' which way?

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## [AWS Kinesis Video Stream](https://discourse.nodered.org/t/aws-kinesis-video-stream/40244)

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**Author:** [@mandeepahuja](https://discourse.nodered.org/u/mandeepahuja)\
**Replies:** 1\
**Last updated:** [2 February 2021 17:08 UTC](https://discourse.nodered.org/t/aws-kinesis-video-stream/40244 "2021-02-02T17:08:28Z")

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Hello Team... I am hoping someone has already done this and can give me a head start Has anyone used the AWS Kinesis Video Stream through Node-Red. I see in the aws package Kinesis is available An example flow using…

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## [Noob set flow variable question](https://discourse.nodered.org/t/noob-set-flow-variable-question/40245)

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**Author:** [@vkuehn](https://discourse.nodered.org/u/vkuehn)\
**Replies:** 5\
**Last updated:** [2 February 2021 15:36 UTC](https://discourse.nodered.org/t/noob-set-flow-variable-question/40245 "2021-02-02T15:36:53Z")

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Accroding to the documentation it should work to set variables from a function node to the flow like that. if (flow.get("bot\_command")!==undefined){ flow.set("bot\_command", "c0,0"); } msg.payload = flow.get('bot\_com…

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## [Additive / compound delay](https://discourse.nodered.org/t/additive-compound-delay/39940)

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**Author:** [@gazzat5](https://discourse.nodered.org/u/gazzat5)\
**Replies:** 5\
**Last updated:** [2 February 2021 15:36 UTC](https://discourse.nodered.org/t/additive-compound-delay/39940 "2021-02-02T15:36:03Z")

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Hi there, I'm picking up data from mqtt as the input node, triggering a delay and then setting the msg.payload to '0'. However i want to know what happens if the delay gets triggered twice, do the timers run concurrent…

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## [Beginner Question - DHT11 triggering Relay](https://discourse.nodered.org/t/beginner-question-dht11-triggering-relay/39892)

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**Author:** [@bugsy65](https://discourse.nodered.org/u/bugsy65)\
**Replies:** 9\
**Last updated:** [2 February 2021 14:55 UTC](https://discourse.nodered.org/t/beginner-question-dht11-triggering-relay/39892 "2021-02-02T14:55:02Z")

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Hi Everyone, First off want to apologize. I am new to Node Red and in a way a beginner at programming. Although I am enjoying using the Node Red interface, I'm trying to wrap my head around triggering, specifically a re…

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## [MYSQL result splitting problem](https://discourse.nodered.org/t/mysql-result-splitting-problem/40163)

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**Author:** [@mac5562](https://discourse.nodered.org/u/mac5562)\
**Replies:** 12\
**Last updated:** [2 February 2021 14:20 UTC](https://discourse.nodered.org/t/mysql-result-splitting-problem/40163 "2021-02-02T14:20:25Z")

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HI ! I have problem with the spliting returning sql array result. As you will see down below i got the result from sql node normaly, but soon as pass through the split node i got that. Here is the node, what i use: \[…

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## [Populate input dropdown from json file](https://discourse.nodered.org/t/populate-input-dropdown-from-json-file/40217)

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**Author:** [@fmarzocca](https://discourse.nodered.org/u/fmarzocca)\
**Replies:** 11\
**Last updated:** [2 February 2021 13:47 UTC](https://discourse.nodered.org/t/populate-input-dropdown-from-json-file/40217 "2021-02-02T13:47:32Z")

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Hi, in my subflow I have set an input variable as a dropdown select. I would like to populate the dropdown from an external json file. Is it possible? Thanks

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## [Connecting to a Broker - Non Local - MQTT](https://discourse.nodered.org/t/connecting-to-a-broker-non-local-mqtt/40236)

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**Author:** [@georgey11](https://discourse.nodered.org/u/georgey11)\
**Replies:** 3\
**Last updated:** [2 February 2021 13:43 UTC](https://discourse.nodered.org/t/connecting-to-a-broker-non-local-mqtt/40236 "2021-02-02T13:43:47Z")

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So, basically i have 2 raspberry pi. One with Facial Recognition successfully sending the name of the face recognized to the broker. On my second Pi, i am running Node-red and want to subscribe to this. Any idea on h…

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## [\[Help\] Tasker to Node-RED Problem. HTTP Request Task fires but gets stuck](https://discourse.nodered.org/t/help-tasker-to-node-red-problem-http-request-task-fires-but-gets-stuck/40234)

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**Author:** [@SamuelSauerSacK](https://discourse.nodered.org/u/SamuelSauerSacK)\
**Replies:** 2\
**Last updated:** [2 February 2021 12:48 UTC](https://discourse.nodered.org/t/help-tasker-to-node-red-problem-http-request-task-fires-but-gets-stuck/40234 "2021-02-02T12:48:17Z")

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Hey guys, i have a problem. i want to wake up my PC via Node-RED (RaspberryPI 192.168.178.30:1880) via Taskers HTTP Request Task. The Problem is that the HTTP Task always throws a timeout exception when the task is exec…

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## [Multiple instances of nodejs and nodered](https://discourse.nodered.org/t/multiple-instances-of-nodejs-and-nodered/40221)

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**Author:** [@Nxito](https://discourse.nodered.org/u/Nxito)\
**Replies:** 5\
**Last updated:** [2 February 2021 10:54 UTC](https://discourse.nodered.org/t/multiple-instances-of-nodejs-and-nodered/40221 "2021-02-02T10:54:13Z")

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hi, i describe my problem I use windows and I have multiple instances of node-red, all of them with their respective NSSM service. All are version 1.0.6 and my nodejs is v10.15.3 Now I have to create a new node-red in…

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## [Node red fail to start after sqlite node installed](https://discourse.nodered.org/t/node-red-fail-to-start-after-sqlite-node-installed/40172)

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**Author:** [@Massimo](https://discourse.nodered.org/u/Massimo)\
**Replies:** 17\
**Last updated:** [2 February 2021 09:45 UTC](https://discourse.nodered.org/t/node-red-fail-to-start-after-sqlite-node-installed/40172 "2021-02-02T09:45:53Z")

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Hello, I'm running node-red on SIEMENS iot2050. Node-red version: v1.2.7 Node.js version: v10.15.2 Linux 4.19.59+ arm64 LE Everything was ok as soon as I installed a node, with: npm install node-red-node-sqlite in /…

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## [Docker UDP - Error \[ERR\_SOCKET\_DGRAM\_NOT\_RUNNING\]: Not running](https://discourse.nodered.org/t/docker-udp-error-err-socket-dgram-not-running-not-running/39044)

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**Author:** [@bausi2k](https://discourse.nodered.org/u/bausi2k)\
**Replies:** 1\
**Last updated:** [2 February 2021 09:24 UTC](https://discourse.nodered.org/t/docker-udp-error-err-socket-dgram-not-running-not-running/39044 "2021-02-02T09:24:16Z")

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Hi, I have three docker container on my Synology running, which work fine. One of those 3 Instanzes is sending and receiving data from my KEBA Wallbox via UDP. This is basically also working fine. But after some time,…

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## [How to split/join after discarding values](https://discourse.nodered.org/t/how-to-split-join-after-discarding-values/40192)

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**Author:** [@cverbiest](https://discourse.nodered.org/u/cverbiest)\
**Replies:** 4\
**Last updated:** [2 February 2021 06:45 UTC](https://discourse.nodered.org/t/how-to-split-join-after-discarding-values/40192 "2021-02-02T06:45:17Z")

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I'm a NodeRED newbie trying to figure out how to split an array, select some values and join the selected values back into an array. My sample works fine if I select all values. I discard values I don't get a result. E…

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## [Change the brightness and Temperatur automatic](https://discourse.nodered.org/t/change-the-brightness-and-temperatur-automatic/40199)

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**Author:** [@vikozo](https://discourse.nodered.org/u/vikozo)\
**Replies:** 0\
**Last updated:** [1 February 2021 22:13 UTC](https://discourse.nodered.org/t/change-the-brightness-and-temperatur-automatic/40199 "2021-02-01T22:13:09Z")

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Hello i would like to change the brightness and Temperatur automatic of some Bulb in the house. i think it would best work with node-red-contrib-sun-position 1.1.7 i would imagine. befor sunset the light goes on and…

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## [How to use 'aggregate' mode in 'mongoDB in' node properly?](https://discourse.nodered.org/t/how-to-use-aggregate-mode-in-mongodb-in-node-properly/40196)

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**Author:** [@CreativeWarlock](https://discourse.nodered.org/u/CreativeWarlock)\
**Replies:** 2\
**Last updated:** [1 February 2021 22:03 UTC](https://discourse.nodered.org/t/how-to-use-aggregate-mode-in-mongodb-in-node-properly/40196 "2021-02-01T22:03:55Z")

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Hi, I'm not sure if I'm doing something wrong (more likely) or if there's a bug with the 'aggregate' mode of the "mongodb in" node from @dceejay and @knolleary's contribution node-red-node-mongodb (less likely? …

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## [Reading Images from one folder into one array](https://discourse.nodered.org/t/reading-images-from-one-folder-into-one-array/40127)

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**Author:** [@ChristianM](https://discourse.nodered.org/u/ChristianM)\
**Replies:** 2\
**Last updated:** [1 February 2021 21:28 UTC](https://discourse.nodered.org/t/reading-images-from-one-folder-into-one-array/40127 "2021-02-01T21:28:23Z")

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Hi Guys, I am still new to node-red so I try to figure out some basic stuff. This time I stumbled over something within the node-red-contrib-animate-gif node. The Info tab for the Input Data says: payloadarray array…

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## [Nothing on debug panel output](https://discourse.nodered.org/t/nothing-on-debug-panel-output/40079)

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**Author:** [@zemmo](https://discourse.nodered.org/u/zemmo)\
**Replies:** 8\
**Last updated:** [1 February 2021 21:21 UTC](https://discourse.nodered.org/t/nothing-on-debug-panel-output/40079 "2021-02-01T21:21:12Z")

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Hi, this is my configuration: Rapberry 4 with rasbian 10 Node red Version v1.2.7 Node.js v12.20.1 A very Simple flow nothing shows up on Debug Tab. From the console of Chrome I find this websocket error: Any i…

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## [Is there an AND node?](https://discourse.nodered.org/t/is-there-an-and-node/40028)

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**Author:** [@craigcurtin](https://discourse.nodered.org/u/craigcurtin)\
**Replies:** 7\
**Last updated:** [1 February 2021 20:26 UTC](https://discourse.nodered.org/t/is-there-an-and-node/40028 "2021-02-01T20:26:04Z")

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Guys, I want/need to compare multiple context variables and dependent on the comparison do something else. I could obviously do this in a function node - but it will probably end up quite messy - i was wondering if th…

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## [Introduce myself and need a little help in the right direction](https://discourse.nodered.org/t/introduce-myself-and-need-a-little-help-in-the-right-direction/40188)

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**Author:** [@martijnoss](https://discourse.nodered.org/u/martijnoss)\
**Replies:** 3\
**Last updated:** [1 February 2021 20:18 UTC](https://discourse.nodered.org/t/introduce-myself-and-need-a-little-help-in-the-right-direction/40188 "2021-02-01T20:18:54Z")

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Hello members, First of all i want to introduce myself. I am Martijn 37 years and i live in the Netherlands in Oss and i am married she said and we have a 6 year old child. My intention is to create a dashboard that i…

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## [Vibration\_sensor](https://discourse.nodered.org/t/vibration-sensor/40148)

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**Author:** [@kajal](https://discourse.nodered.org/u/kajal)\
**Replies:** 5\
**Last updated:** [1 February 2021 20:12 UTC](https://discourse.nodered.org/t/vibration-sensor/40148 "2021-02-01T20:12:41Z")

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I want to plot a line chart of vibration sensor Data. Following is my flow. How can i plot a real time line chat using node red where x-axis will be frequency and y-axis will be amplitude. \[{"id":"5c0f3e4b.7b304","type"…

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## [Pass-in URL parameters with value to allow access?](https://discourse.nodered.org/t/pass-in-url-parameters-with-value-to-allow-access/40165)

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**Author:** [@grawsom](https://discourse.nodered.org/u/grawsom)\
**Replies:** 3\
**Last updated:** [1 February 2021 20:03 UTC](https://discourse.nodered.org/t/pass-in-url-parameters-with-value-to-allow-access/40165 "2021-02-01T20:03:49Z")

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Hi there Have made a solution where I send an URL to my node-red /my-testquery?value1=xxx&value2=yyy&value=zzz How can I add a parameter eg. user=xyz so I can validate if the url is allowed to be processed? Here is m…

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## [Receiving data from multiple nodes and uploading it to sqlite database](https://discourse.nodered.org/t/receiving-data-from-multiple-nodes-and-uploading-it-to-sqlite-database/37642)

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**Author:** [@abhishek](https://discourse.nodered.org/u/abhishek)\
**Replies:** 12\
**Last updated:** [1 February 2021 16:54 UTC](https://discourse.nodered.org/t/receiving-data-from-multiple-nodes-and-uploading-it-to-sqlite-database/37642 "2021-02-01T16:54:43Z")

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Hello All, I am making a UI where I need to store the UUID and part number along with the timestamp into an SQLite database. The values are taken from the user input which is numbers. I need to take the value from mul…

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