Instagram and Foursquare don't work with ProxyPass

[joeinnes]

Instagram can be cheated by setting the callback URI to localhost:3000 and then manually copying out the token from the response, but Foursquare don't like it. This is a problem because I run Apache as my web server and am proxy passing my api.foo.com requests to localhost:3000.

[joeinnes]

Looks like Foursquare is doing something weird. I was able to cheat it into giving me an access token, but I had to put the callback URI as http://http://api.foo.com