WWWizer for Google App Engine

According to the DNS specification (see https://www.ietf.org/rfc/rfc1034.txt), having a CNAME for the apex or root domain means that the domain cannot have any other types of DNS records (not sure why but it is what it is). This means that MX, SOA, CA, TXT values are invalid fit the apex is a CNAME. This is why the majority of sites (google, facebook, etc.) force a redirect to 'www.' for the root domain.

This is a tiny web service that does just that, running on Google App Engine. The idea is that you deploy this app in it's entirety to a service and then use your dispatch.yaml to force requests to example.com to www.example.com.

Usage

Deploy the application:

gcloud app deploy app/app.yaml --project=MY_PROJECT_ID

Don't forget to replace MY_PROJECT_ID with the correct version.

Create or update your dispatch.yaml:

dispatch:
- url: "example.com/*"
  service: wwwizer

- url: "www.example.com/*"
  service: default

And update:

gcloud app deploy dispatch.yaml

And that is it! If you hit http://example.com you will be redirected to https://www.example.com using HTTP code 307.

Configuration

There are two values in app/config.py that you should be aware of.

Key	Value
DOMAINS	A list of domains that you want to respond to. If not supplied, all requests will be redirected.
FORCE_HTTPS	All redirected requests by default will be pushed to https. Setting this to False will use the request scheme.