There is an active issue with urlfetch_stub.py in the SDK where the FULL URL is being sent to the HTTP server as the path.
Question and patch posted here: http://stackoverflow.com/questions/31195459/appengine-dev-appserver-urllib2-urlopen-issue-with-localhost-url Basically, it's connecting like this: Oh hey, http://localhost, we're connected, HI! > Now that we're connected, can you give me URI "http://localhost"; > Wait what, that's not right?? ooh. We found this while working on our elasticsearch integration, which was hilarious to debug. Imagine trying to find out why you have a new index named "http:" -- You received this message because you are subscribed to the Google Groups "Google App Engine" group. To unsubscribe from this group and stop receiving emails from it, send an email to google-appengine+unsubscr...@googlegroups.com. To post to this group, send email to google-appengine@googlegroups.com. Visit this group at http://groups.google.com/group/google-appengine. To view this discussion on the web visit https://groups.google.com/d/msgid/google-appengine/74688f8c-27f1-42fa-a706-ee83dc5de299%40googlegroups.com. For more options, visit https://groups.google.com/d/optout.
