This is a reply to an email message I got just now into my inbox from the message board but the link is not showing the original Postman link... strange! The original link is Postman Question But the reply link was dead or at least did not allow me to select a Forum. So I created this message as my reply.

So the answer to the question, did I ever get the Firebase Postman for testing API calls, no I don't remember ever getting this to do want I wanted at the time. And yes, I am self-hosting VFM, Python and Node.js apps in the Cloud. However, I do know I still get credit card charges of $0.04 every month from when I was trying this out about three years ago, but I am to lazy to try and figure out how to cancel the account.

That said, I have started to use with a lot of success the Firebase Cloud Messaging service. In this case Firebase allows me to create native Android and iOS apps that can display a notification events when the mobile device is awake or asleep in the background. This have been a fundamental requirement for a Raspberry Pi doorbell project. In the project, when a visitor presses the doorbell button, it sends a notification to all the subscribers (users) of the app. The first user to answer the ringing device, then establishes a pier-to-pier WebRTC video connection through MQTT and decides how to handle the visitor at the door.

It might sound a lot like what you can buy with a Ring doorbell, but this system has a lot of other features that Ring does not offer. If you are interested, the RPi code is written in Python and the frontend is a Ionic-Vue project that was compiled in Capacitor to make it a native mobile app. I started with a JavaScript WebRTC library from Tzu-Huan which gave me a huge jump start into the bkack magic or WebRTC.

Okay, back to work!