Pushover Node with base64 image

General
1

Hi everyone,

I'm trying to send an image via the Pushover node in Node-RED as an embedded image attachment.

Here's what I’ve done so far:

  • I used the HTTP request node to fetch an image over HTTPS.
  • I converted the image to base64.
  • In a Function node, I added the base64 image to msg.attachment using this code:
msg.attachment = Buffer.from(msg.payload, 'base64');
return msg;

However, when I pass this to the Pushover node, the image doesn't show up in the message.

Has anyone successfully sent a base64-encoded image with the Pushover node? Do I need to include any additional metadata (like filename or content-type), or is just passing the Buffer enough?

Any advice or working example would be greatly appreciated!

Thanks in advance!

2

Not sure what to want to do, attach an image or embed an image.
To see the image in the message I'm using msg.image to the Pushover node.

3

Thanks for your reply!

What I’m trying to do is embed the image directly into the Pushover message so that it shows up inline in the notification — not just as an attachment.

From what I found, setting msg.image is indeed the way to do that. However, in my case, it only works when the image is provided as a buffer, not as an HTTPS URL. When I try to set msg.image to an HTTPS link (e.g. from my camera), it doesn't display in the message — at least not for me.

But I’m not sure if this is the right approach — or if something else is required for the Pushover node to embed the image properly.

4

You can't set it as a link - how could your end device (eg phone) browse to your camera to access that link ? (I hope it couldn't anyway). You need to get the image locally (eg using http request node - then send the buffer to pushover.

5

Yes, this is the way i am trying to do this right now.

image
image448×128 4.91 KB

Function2 has the code from my first post.

But with msg.attachment the picture is not shown in the pushover message. And that's why i am asking here ;-).

6

But don't you receive a buffer from the http request node ? Now you are converting it to base64 and then back to a buffer in the function node (?) - ie. what @dceejay is suggesting, just send the buffer directly from the http req node (set it to output a buffer) as msg.image

7

I used the change Node to set msg.image = msg.payload after the http request. But i get this error: "TypeError: msg.image.match is not a function".

8

have you confirmed (with a debug node) what the http-request is returning?

9

how exactly do you have the change node set ? match is a comparison operation

10

You should probably be using Move msg.payload To msg.image

11

When I fetch the image using an HTTP Request node, I receive a buffer (1055996 bytes). I process this for email by converting it to base64 and embedding it into the email, which is then sent using an Email node — and the image displays correctly in the email.

Now, after the HTTP Request node, I’ve added a Move node that transfers the content of msg.payload into either msg.image or msg.attachment, depending on the test. However, in both cases the image is not delivered via Pushover anymore.

  • If I use msg.image, I get the error: TypeError: msg.image.match is not a function, and the Pushover message is not sent.
  • If I use msg.attachment, the Pushover message is sent, but without an image.

What can I do to make the image work with Pushover?

12

Is that coming from the Change node?

13

No, from the pushover node.

14

Which pushover node are you using? Library - Node-RED shows several.

15

This one:
image

16

From node-red-contrib-pushover (node) - Node-RED

msg.image: The URL of the image in notification. Local file path or http(s) url

It says it can be a file path or a url, not a buffer.

17

Thanks! Now it works. I choosed node-red-node-pushover and this worked with msg.attachment.

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