# Regarding to send a message from Node red to Niagara 4 framework
**URL:** https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603
**Category:** General
**Created:** [18 February 2022 14:33 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603 "2022-02-18T14:33:15Z")
**Posts on this page:** 20
**Page:** 1
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [18 February 2022 14:33 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/1 "2022-02-18T14:33:15Z")
Hello,,,
I would like to tell you that I would like to send a message or post a message from Node-red to Niagara 4 framework via Obix communication. The message from Niagara 4 can be read into the Node-red but the message can't be written or posted from Node-red to Niagara 4. I got an error. Also, I attached a screenshot of an error. Please see the attachment
.
Could you please to help me out to solve this problem?
Thank you in advance.
BR,
Hiteshkumar Amipara
---
### Author:  [@UnborN](https://discourse.nodered.org/u/UnborN)
#### Post date: [18 February 2022 14:43 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/2 "2022-02-18T14:43:42Z")
possibly the problem is mixing single quotes with double quotes when you try to concatenate the string ?
try all double or all single quotes for that line
---
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [18 February 2022 14:49 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/3 "2022-02-18T14:49:09Z")
Thank you for your reply.
When I will try all double then I got an error: "Expecting quoted attribute value"
I have also attached a screenshot. please see it.
Thank you.
```auto
```
---
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [18 February 2022 14:51 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/4 "2022-02-18T14:51:06Z")
---
### Author:  [@UnborN](https://discourse.nodered.org/u/UnborN)
#### Post date: [18 February 2022 14:59 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/5 "2022-02-18T14:59:22Z")
> [@Hitesh1234](#):
>
> Expecting quoted attribute value
try it this way .. using [template literals](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Template_literals) with backticks ( ` )
```auto
msg.payload = ``
```
---
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [18 February 2022 15:24 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/6 "2022-02-18T15:24:06Z")
Thank you once again.
I would like to inform you that if I used what you said in the last message then the msg.payload is written as output. But I want to post the value of msg.payload not just msg.payload.
I am sharing a screenshot. Please see it.
In the screenshot, the value of msg.payload is "ABCD". but the output is written as a msg.payload istead of "ABCD"
Thank you so much.
---
### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [18 February 2022 15:30 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/7 "2022-02-18T15:30:08Z")
With this
```auto
msg.payload = ``
```
are you using ` a backtick or a ' single quote
your original was missing 2 single quotes
```auto
msg.payload = '';
```
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [18 February 2022 15:30 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/8 "2022-02-18T15:30:34Z")
Why are you coding the request in a function node instead of using the battle tested http request node?
---
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [18 February 2022 15:40 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/9 "2022-02-18T15:40:24Z")
> [@Steve-Mcl](#):
>
> battle tested http request node
Hallo E1cid,
I did try what you mentioned in your message. It's not working.
I have attached a screenshot. Please see it.
Thank you in advance.
---
### Author:  [@E1cid](https://discourse.nodered.org/u/E1cid)
#### Post date: [18 February 2022 15:43 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/11 "2022-02-18T15:43:52Z")
msg.payload is undefined
add
node.warn(msg.payload);
just before the line to confirm msg.payload has not been defined
p.s. when posting code it is best to post text, as images are hard to read and copy from.
---
### Author:  [@UnborN](https://discourse.nodered.org/u/UnborN)
#### Post date: [18 February 2022 15:47 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/12 "2022-02-18T15:47:38Z")
by doing `msg = { "method" : "POST" ... }` doesnt that mean that you destroy whatever was in `msg.payload` and it becomes _undefined_ ?
at the **top** of your code save the value of `msg.payload` coming from the previous msg
for Example
`let val = msg.payload`
so you can later use it with
```auto
msg.payload = ``
```
(note those are backticks not single quotes)
---
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [18 February 2022 16:05 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/13 "2022-02-18T16:05:37Z")
sorry to say that...It's not working....
---
### Author:  [@UnborN](https://discourse.nodered.org/u/UnborN)
#### Post date: [18 February 2022 16:16 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/14 "2022-02-18T16:16:27Z")
what have you tried ?
> [@E1cid](#):
>
> when posting code it is best to post text, as images are hard to read and copy from.
wire a **complete msg** Debug node and show us what comes out of that Function node.
do you get a new error from the device ?
---
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [21 February 2022 13:45 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/15 "2022-02-21T13:45:14Z")
Good morning...
I would like to tell you that I am trying to read and write data from MySQL into the Niagara 4 via Node-red with Obix driver. The data from the Niagara 4 has been read successfully into the MySQL server but the data from the MySQL has not been read successfully into the Niagara 4. Also, I am going to tell how the connection has been made between Niagara 4 with Node-Red as well as Node-red with MySQL.
1. connection between the Niagara 4 with Node-red via oBIX: For connection, I built a Node-red flow that can read the data from Niagara 4 into the Node-red. A built Node-red flow includes a function node, HTTP request, XML..
2)connection between the Node-red with MySQL: A mysql driver is used in Nore-red to access to a MySQL database.
Problem: A message, as a string value comes out of the function node, can't be written in Niagara 4.
I have also attached a screenshot of inputs and outputs.
Please see it..
Thank you in advance.
Best regards,
Hiteshkumar Amipara
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [21 February 2022 13:56 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/16 "2022-02-21T13:56:45Z")
You are trying to put an object into a string (line 33) thats why you get `val: "[object Object]"`
As said before by @UnborN ...
> [@UnborN](#):
>
> at the **top** of your code save the value of `msg.payload` coming from the previous msg
So add something like `var payload = msg.payload` at the top of your function then use `payload` instead of `msg` in line 33
* * *
TIP:
Please post actual function code **not** screenshots of code since it is harder for us to test and provide you with fixes (without re-typing what you have already wrote)
TIP2:
enable monaco editor to see the number of undeclared variables and potential errors you have.
---
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [21 February 2022 13:58 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/17 "2022-02-21T13:58:57Z")
// Code of Function node
username = "obixUser";
password = "Wetec123456#@";
ipAddress = "172.30.34.212";
httpsPort = 443;
authHash = Buffer.from(username+":"+password).toString("base64");
//ordSlot = "/Drivers/SysmikScaIoNetwork/AI4\_2/points/Ai3/out/value";
ordSlot = "/Supply$20Fan/NewValue";
//ordSlot = "/Supply$20Fan/p";
// create the message for the get request
operation = "/set";
msg={
"method": "POST",
"url": "https://"+ipAddress+":"+httpsPort+"/obix/config"+ordSlot+operation,
"headers":{
"Authorization": "Basic" + authHash,
"Accept":"_/_"
}
};
//ignore cert expired error
msg.rejectUnauthorized = false;
msg.payload = ``;
return msg;
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [21 February 2022 13:59 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/18 "2022-02-21T13:59:21Z")
TIP3:
In order to make code readable and usable it is necessary to surround your code with three backticks (also known as a left quote or backquote `````)
````auto
```
code goes here
```
````
You can edit and correct your post by clicking the pencil ✏ icon.
See this post for more details - [How to share code or flow json](https://discourse.nodered.org/t/how-to-share-code-or-flow-json/506)
---
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [21 February 2022 14:01 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/19 "2022-02-21T14:01:01Z")
```auto
// code of Function node
username = "obixUser";
password = "Wetec123456#@";
ipAddress = "172.30.34.212";
httpsPort = 443;
//create a base64 digest
authHash = Buffer.from(username+":"+password).toString("base64");
//ordSlot = "/Drivers/SysmikScaIoNetwork/AI4_2/points/Ai3/out/value";
ordSlot = "/Supply$20Fan/NewValue";
//ordSlot = "/Supply$20Fan/p";
// create the message for the get request
operation = "/set";
msg={
"method": "POST",
"url": "https://"+ipAddress+":"+httpsPort+"/obix/config"+ordSlot+operation,
"headers":{
"Authorization": "Basic" + authHash,
"Accept":"*/*"
}
};
//ignore cert expired error
msg.rejectUnauthorized = false;
//msg.payload = '';
msg.payload = ``;
return msg;
```
---
### Author:  [@Steve-Mcl](https://discourse.nodered.org/u/Steve-Mcl)
#### Post date: [21 February 2022 14:04 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/20 "2022-02-21T14:04:04Z")
Try this...
```auto
// Code of Function node
const incomingPayload = msg.payload; //save msg.payload before you destroy the msg object below
const username = "obixUser";
const password = "Wetec123456#@";
const ipAddress = "172.30.34.212";
const httpsPort = 443;
const authHash = Buffer.from(username + ":" + password).toString("base64");
const ordSlot = "/Supply$20Fan/NewValue";
const operation = "/set";
// create the message for the get request
msg = {
"method": "POST",
"url": "https://" + ipAddress + ":" + httpsPort + "/obix/config" + ordSlot + operation,
"headers": {
"Authorization": "Basic" + authHash,
"Accept": "/"
}
};
//ignore cert expired error
msg.rejectUnauthorized = false;
msg.payload = ``; //Use the saved value of msg.payload
return msg;
```
---
### Author:  [@Hitesh1234](https://discourse.nodered.org/u/Hitesh1234)
#### Post date: [21 February 2022 14:08 UTC](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603/21 "2022-02-21T14:08:04Z")
Thank you for your message.
Output is: **undefined**
[Next page](https://discourse.nodered.org/t/regarding-to-send-a-message-from-node-red-to-niagara-4-framework/58603.md?page=2)