How do I redirect all requests with URLs beginning with "www" to a naked domain?
The recommended solution for this is DNS level redirection (see heroku help).
Alternatively, you could register a before_request function:
from urlparse import urlparse, urlunparse@app.before_requestdef redirect_www(): """Redirect www requests to non-www.""" urlparts = urlparse(request.url) if urlparts.netloc == 'www.stef.io': urlparts_list = list(urlparts) urlparts_list[1] = 'stef.io' return redirect(urlunparse(urlparts_list), code=301)This will redirect all www requests to non-www using a "HTTP 301 Moved Permanently" response.
I'm not used to Flask, but you could set up a route that matches /^www./ and then redirect it to the url without the "www".
You may want to check http://werkzeug.pocoo.org/docs/routing/#custom-converters or http://werkzeug.pocoo.org/docs/routing/#host-matching