README
¶
Cats and Dogs
A sample app to demonstrate communication between a frontend and a backend application.
We're assuming that you've deployed to BOSH lite. If you've deployed to AWS or
another environment, substitute bosh-lite.com below with the domain name of your installation.
Frontend
The frontend serves a form at http://frontend.bosh-lite.com/ that allows you to enter a backend URL whose contents will be fetched and rendered.
Deploying
cd netman-release/src/example-apps/cats-and-dogs/frontend
cf api api.bosh-lite.com --skip-ssl-validation
cf auth admin admin
cf push frontend
Backend
The backend displays its container network IP if you visit http://backend.bosh-lite.com/ and it serves pictures of cats on the ports specified in the environment variable CATS_PORTS
Deploying
cd netman-release/src/example-apps/cats-and-dogs/backend
cf push backend
cf set-env backend CATS_PORTS "5678,9876"
Usage
After both apps have been deployed, you can visit http://backend.bosh-lite.com/ in a browser. You should see something like:
My overlay IP is: 10.255.76.2
I'm serving cats on ports 5678,9876
If you were to visit http://frontend.bosh-lite.com you should see something like:
Frontend
Backend URL: [_____] [ Submit ]
Enter the backend's overlay IP and port (10.255.76.2:9876) and hit submit. You will see an error message. This is because the two apps have not been configured to allow connections from the frontend to the backend. Now allow access:
cf allow-access frontend backend --port 9876 --protocol tcp
Now if you were to try entering the backend app's overlay IP and port again in the frontend you will see:
[PICTURE OF CAT]
Hello from the backend, port: 9876
Directories