Can Google App Engine make a http request to a Compute Engine instance within the same project without an external IP?
google-app-engine, google-compute-engine, http
Solution
This is currently unsupported. Communication between App Engine and GCE must go through the URLFetch API and use a public IP.
Problem
In App Engine I'd like to make http fetch calls to a web server running on an Compute Engine instance, created within the same Google cloud project, and I'm wondering if I can make such calls to the instance without enabling an external IP for it? Are App Engine and Compute Engine instances, from the same project, within the same network and can I call a Compute Engine instance by name from App Engine?