getting node-red to work with google assistant

Question

Totally new to node-red & sensehat & this whole IoT thing.

I've followed the article on: https://flows.nodered.org/node/node-red-contrib-google-action

Everything worked until the part where I have to test. Google Action encountered an error which says: "xxx isn't responding right now. Try again soon." (where xxx is my project name).

Also, in the google action node, there is a "SSL private key file" and a "SSL certificate file" which i have no idea how to find the path for.

I've tried a guide to create the private key and cert and after everything's done, when i attempt to boot node-red, it says access denied & my node-red is unable to start up..

Edit: It's a school proj so everythjng is local,under a normal router with Internet access (no vpn etc)

Question2: According to this link: https://flows.nodered.org/node/node-red-contrib-google-action i just need a https web server in order for this to work right?

Answer 1

From the doc for the node:

The node runs an Express web server to listen for Action request from Google. By using a separate web server from Node Red, it allows the node to listen on a different port. This allows the Action listener to be exposed to the Internet without having the rest of Node Red also exposed. The web server is required to run HTTPS so you will need SSL certificates. Self signed certificates are OK

You will need to set up port forwarding or some other way to expose this express endpoint to the internet. The Google Assistant servers need to be able to reach this endpoint for anything to work.