Here are some examples of how you can publish messages to the Google Cloud MQTT system
Go to the Google Cloud console and create a project:
Moving to the IoT core on Google Cloud Platform
Enable the Google IoT Core API.
Create a device registry
Enter the name of your registry, select a region and add a topic (in this case events and states etc).
On this screen, click on ‘Add device’.
And it will look like this:
Type the following command on the command line to create a certificate that can be pasted into the field
openssl req -x509 -newkey rsa:2048 -keyout rsa_private.pem -nodes -out rsa_cert.pem -subj "/CN=unused"
This will create a file called rsa_private.pem and a file called rsa_cert.pem.
Copy the contents of the rsa_cert.pem file to the window.
You are now ready to receive messages from Gravio.