GAE self.request.environ and server host

Question

I'm trying to obtain the base URL (hostname) of the server in which my appengine app is running on.

Ie something along the lines of

wsgiref.util.application_uri(self.request.environ)

However it's returning the PATH_INFO which I do not want. Perhaps I'm missing something but even this article states the path info should be omitted. http://docs.python.org/library/wsgiref.html

http://9.latest.my-app.appspot.com

is basically along the lines of what i'm trying to retrieve. Instead it's returning

http://9.latest.my-app.appspot.com/my/requested/path

Answer 1

You can find the hostname in os.environ['HTTP_HOST'].

That won't include the protocol, but it should be easy to parse from the value you've got:

base = '/'.join(url.split('/')[:3])

or...

import urlparse
url = urlparse.urlparse(url)
base = "%s://%s" % (url.scheme, url.hostname)

Answer 2

The request object is a Webob request object. As such, you can get the hostname from self.request.host, the hostname with protocol from self.request.host_url, and so forth.