oauth2-me
oauth2.me is a web service that proxifies your oauth requests.
It enables an ability to use 1 credentials on multiple domains without modifying the redirect uri settings.
Usage
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You need to set your redirect uri to http://www.jetthoughts.com/oauth2-me/redirect
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Your application should use the state parameter to pass your redirect URI encoded with base64
We've created a gem for rubyists to do it automatically: oauth2-me-ruby
Note: You should never use oauth2.me with your production servers, the state parameter we are using, should be used to protect your application from CSRF attacks.