I am just running some tests on c9.io - but I am stuck on how to get the HTTPS server to run.
I am using the port given in process.env.PORT which links up to the browser in c9, but there doesn't seem to an HTTPS port. In a local environment I use port 3001 for HTTPS.
The Cloud9 workspaces don't support custom SSL certificates yet so you won't be able to start an HTTPS server from there, but your http server running on 0.0.0.0:8080 will be accessible via both HTTP and HTTPS.