Ruby on rails Facebook身份验证在rails 3.2.3上引发了一个错误

我设置了一个rails应用程序（3.2.3[Desive 3.4.1，omniauth facebook 2.0.0，omniauth 1.2.2]）来使用facebook作为身份验证程序，我在尝试登录时遇到了这个问题。问题是，它甚至没有到达我的代码（控制器）。你知道这件事吗

奇怪的是，当我在主机上设置

127.0.0.1 mydomain.com

并浏览到

mydomain.com:3000

时，它工作了！虽然我在本地使用的是

http

而不是

https

类似于生产

Started GET "/users/auth/facebook" for x.x.x.x at 2015-02-12 00:45:05 +0000
Started GET "/users/auth/facebook/callback?code=xxxx" for 127.0.0.1 at 2015-02-12 00:45:05 +0000

URI::InvalidURIError (the scheme http does not accept registry part: app_server (or bad hostname?)):
  /home/deployer/.rbenv/versions/2.0.0-p195/lib/ruby/2.0.0/uri/generic.rb:214:in `initialize'
  /home/deployer/.rbenv/versions/2.0.0-p195/lib/ruby/2.0.0/uri/http.rb:84:in `initialize'
  /home/deployer/.rbenv/versions/2.0.0-p195/lib/ruby/2.0.0/uri/common.rb:214:in `new'
  /home/deployer/.rbenv/versions/2.0.0-p195/lib/ruby/2.0.0/uri/common.rb:214:in `parse'
  /home/deployer/.rbenv/versions/2.0.0-p195/lib/ruby/2.0.0/uri/common.rb:747:in `parse'
  omniauth (1.2.2) lib/omniauth/strategy.rb:416:in `full_host'

---

原来这是nginx代理的问题，我忘了转发给定位置的

Host

头。我刚刚设置了标题主机，一切都很顺利

proxy_set_header主机'example.com'