Omniauth + Google + Faraday + Behind the proxy = how setup proxy? - ruby-on-rails

Question

My production server is Ubuntu 12.
I'm using Devise + OmniAuth to handle the Google authentication.
But when Google returns a control to my application I get an error "Network is unreachable".
I assume it's because of server is behind the proxy.
Here's error description:
-------------------------------
Request:
-------------------------------
* URL : http://efiling.uipv.org/users/auth/google_oauth2/callback?state=f4eaca9fbed2a77c0baac50cdbdccab7eee671179bb8fc43&code=4/YRcyYZzkrfNh8mEBbenxaxyx5EjN.4snirEA-93MXOl05ti8ZT3a9mXdIcgI
* IP address: 213.160.144.239
* Parameters: {"state"=>"f4eaca9fbed2a77c0baac50cdbdccab7eee671179bb8fc43", "code"=>"4/YRcyYZzkrfNh8mEBbenxaxyx5EjN.4snirEA-93MXOl05ti8ZT3a9mXdIcgI"}
* Rails root: /home/test/efiling2
* Timestamp : 2012-08-14 11:22:27 +0300
-------------------------------
Session:
-------------------------------
* session id: "5b45534889547514b01f59e39f21f74a"
* data: {"session_id"=>"5b45534889547514b01f59e39f21f74a",
"_csrf_token"=>"GJAFgiVO3zd/INIW6DqDh/VYGlvoZ8WuEKAX1HseJwA="}
-------------------------------
Environment:
-------------------------------
* CONTENT_LENGTH : 0
* DOCUMENT_ROOT : /home/test/efiling2/public
* HTTP_ACCEPT : text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
* HTTP_ACCEPT_ENCODING : gzip, deflate
* HTTP_ACCEPT_LANGUAGE : ru-ru,ru;q=0.8,en-us;q=0.5,en;q=0.3
* HTTP_CACHE_CONTROL : max-age=0
* HTTP_CONNECTION : keep-alive
* HTTP_COOKIE : _eFiling2_session=BAh7CkkiD3Nlc3Npb25faWQGOgZFRiIlNWI0NTUzNDg4OTU0NzUxNGIwMWY1OWUzOWYyMWY3NGFJIhBfY3NyZl90b2tlbgY7AEZJIjFHSkFGZ2lWTzN6ZC9JTklXNkRxRGgvVllHbHZvWjhXdUVLQVgxSHNlSndBPQY7AEZJIhRvbW5pYXV0aC5wYXJhbXMGOwBGewBJIhRvbW5pYXV0aC5vcmlnaW4GOwBGIidodHRwOi8vZWZpbGluZy51aXB2Lm9yZy8%2FbG9jYWxlPXVrSSITb21uaWF1dGguc3RhdGUGOwBGIjVmNGVhY2E5ZmJlZDJhNzdjMGJhYWM1MGNkYmRjY2FiN2VlZTY3MTE3OWJiOGZjNDM%3D--08b5e8bcf347ac5c845922cbf85f31a24907c100
* HTTP_HOST : efiling.uipv.org
* HTTP_USER_AGENT : Mozilla/5.0 (Windows NT 5.1; rv:14.0) Gecko/20100101 Firefox/14.0.1
* HTTP_VIA : 1.1 proxy.ukrpatent.org (squid/3.1.19)
* HTTP_X_FORWARDED_FOR : 10.11.10.56
* PASSENGER_APP_SPAWNER_IDLE_TIME : -1
* PASSENGER_APP_TYPE : rack
* PASSENGER_CONNECT_PASSWORD : [FILTERED]
* PASSENGER_DEBUGGER : false
* PASSENGER_ENVIRONMENT : development
* PASSENGER_FRAMEWORK_SPAWNER_IDLE_TIME : -1
* PASSENGER_FRIENDLY_ERROR_PAGES : true
* PASSENGER_GROUP :
* PASSENGER_MAX_REQUESTS : 0
* PASSENGER_MIN_INSTANCES : 1
* PASSENGER_SHOW_VERSION_IN_HEADER : true
* PASSENGER_SPAWN_METHOD : smart-lv2
* PASSENGER_USER :
* PASSENGER_USE_GLOBAL_QUEUE : true
* PATH_INFO : /users/auth/google_oauth2/callback
* QUERY_STRING : state=f4eaca9fbed2a77c0baac50cdbdccab7eee671179bb8fc43&code=4/YRcyYZzkrfNh8mEBbenxaxyx5EjN.4snirEA-93MXOl05ti8ZT3a9mXdIcgI
* REMOTE_ADDR : 213.160.144.239
* REMOTE_PORT : 62175
* REQUEST_METHOD : GET
* REQUEST_URI : /users/auth/google_oauth2/callback?state=f4eaca9fbed2a77c0baac50cdbdccab7eee671179bb8fc43&code=4/YRcyYZzkrfNh8mEBbenxaxyx5EjN.4snirEA-93MXOl05ti8ZT3a9mXdIcgI
* SCGI : 1
* SCRIPT_NAME :
* SERVER_ADDR : 10.10.18.3
* SERVER_NAME : efiling.uipv.org
* SERVER_PORT : 80
* SERVER_PROTOCOL : HTTP/1.1
* SERVER_SOFTWARE : nginx/1.2.2
* UNION_STATION_SUPPORT : false
* _ : _
* action_dispatch.cookies : {"_eFiling2_session"=>"BAh7CkkiD3Nlc3Npb25faWQGOgZFRiIlNWI0NTUzNDg4OTU0NzUxNGIwMWY1OWUzOWYyMWY3NGFJIhBfY3NyZl90b2tlbgY7AEZJIjFHSkFGZ2lWTzN6ZC9JTklXNkRxRGgvVllHbHZvWjhXdUVLQVgxSHNlSndBPQY7AEZJIhRvbW5pYXV0aC5wYXJhbXMGOwBGewBJIhRvbW5pYXV0aC5vcmlnaW4GOwBGIidodHRwOi8vZWZpbGluZy51aXB2Lm9yZy8/bG9jYWxlPXVrSSITb21uaWF1dGguc3RhdGUGOwBGIjVmNGVhY2E5ZmJlZDJhNzdjMGJhYWM1MGNkYmRjY2FiN2VlZTY3MTE3OWJiOGZjNDM=--08b5e8bcf347ac5c845922cbf85f31a24907c100"}
* action_dispatch.parameter_filter : [:password, :efile, /RAW_POST_DATA/]
* action_dispatch.remote_ip : 213.160.144.239
* action_dispatch.request.content_type :
* action_dispatch.request.parameters : {"state"=>"f4eaca9fbed2a77c0baac50cdbdccab7eee671179bb8fc43", "code"=>"4/YRcyYZzkrfNh8mEBbenxaxyx5EjN.4snirEA-93MXOl05ti8ZT3a9mXdIcgI"}
* action_dispatch.request.path_parameters : {}
* action_dispatch.request.query_parameters : {"state"=>"f4eaca9fbed2a77c0baac50cdbdccab7eee671179bb8fc43", "code"=>"4/YRcyYZzkrfNh8mEBbenxaxyx5EjN.4snirEA-93MXOl05ti8ZT3a9mXdIcgI"}
* action_dispatch.request.request_parameters : {}
* action_dispatch.request.unsigned_session_cookie: {"session_id"=>"5b45534889547514b01f59e39f21f74a", "_csrf_token"=>"GJAFgiVO3zd/INIW6DqDh/VYGlvoZ8WuEKAX1HseJwA=", "omniauth.params"=>{}, "omniauth.origin"=>"http://efiling.uipv.org/?locale=uk", "omniauth.state"=>"f4eaca9fbed2a77c0baac50cdbdccab7eee671179bb8fc43"}
* action_dispatch.secret_token : f7fa3943c0fc9f3b40a9bc5b0260fa43979de183fc338c08ec96277d6aeab1ce7973c188f93e978d4a513a08d871888520f41671d06a15315ffc6c3d43a1abfa
* action_dispatch.show_exceptions : true
* exception_notifier.options : {:sender_address=>"\"Efiling\" <alex_drobazko#uipv.org>", :exception_recipients=>["drobazko#gmail.com"], :email_prefix=>"[Efiling Error Report] ", :sections=>["request", "session", "environment", "backtrace"], :background_sections=>["backtrace", "data"], :verbose_subject=>true, :normalize_subject=>false, :ignore_exceptions=>["ActiveRecord::RecordNotFound", "AbstractController::ActionNotFound", "ActionController::RoutingError"], :ignore_crawlers=>[], :ignore_if=>#<Proc:0xa55f0b4#/home/test/.rvm/gems/ruby-1.9.3-p194/gems/exception_notification-2.6.1/lib/exception_notifier.rb:30 (lambda)>}
* omniauth.origin : http://efiling.uipv.org/?locale=uk
* omniauth.params : {}
* omniauth.strategy : #<OmniAuth::Strategies::GoogleOauth2:0xafdbca4>
* rack.errors : #<IO:0x9a598f4>
* rack.input : #<PhusionPassenger::Utils::RewindableInput:0xafc2718>
* rack.multiprocess : true
* rack.multithread : false
* rack.request.cookie_hash : {"_eFiling2_session"=>"BAh7CkkiD3Nlc3Npb25faWQGOgZFRiIlNWI0NTUzNDg4OTU0NzUxNGIwMWY1OWUzOWYyMWY3NGFJIhBfY3NyZl90b2tlbgY7AEZJIjFHSkFGZ2lWTzN6ZC9JTklXNkRxRGgvVllHbHZvWjhXdUVLQVgxSHNlSndBPQY7AEZJIhRvbW5pYXV0aC5wYXJhbXMGOwBGewBJIhRvbW5pYXV0aC5vcmlnaW4GOwBGIidodHRwOi8vZWZpbGluZy51aXB2Lm9yZy8/bG9jYWxlPXVrSSITb21uaWF1dGguc3RhdGUGOwBGIjVmNGVhY2E5ZmJlZDJhNzdjMGJhYWM1MGNkYmRjY2FiN2VlZTY3MTE3OWJiOGZjNDM=--08b5e8bcf347ac5c845922cbf85f31a24907c100"}
* rack.request.cookie_string : _eFiling2_session=BAh7CkkiD3Nlc3Npb25faWQGOgZFRiIlNWI0NTUzNDg4OTU0NzUxNGIwMWY1OWUzOWYyMWY3NGFJIhBfY3NyZl90b2tlbgY7AEZJIjFHSkFGZ2lWTzN6ZC9JTklXNkRxRGgvVllHbHZvWjhXdUVLQVgxSHNlSndBPQY7AEZJIhRvbW5pYXV0aC5wYXJhbXMGOwBGewBJIhRvbW5pYXV0aC5vcmlnaW4GOwBGIidodHRwOi8vZWZpbGluZy51aXB2Lm9yZy8%2FbG9jYWxlPXVrSSITb21uaWF1dGguc3RhdGUGOwBGIjVmNGVhY2E5ZmJlZDJhNzdjMGJhYWM1MGNkYmRjY2FiN2VlZTY3MTE3OWJiOGZjNDM%3D--08b5e8bcf347ac5c845922cbf85f31a24907c100
* rack.request.query_hash : {"state"=>"f4eaca9fbed2a77c0baac50cdbdccab7eee671179bb8fc43", "code"=>"4/YRcyYZzkrfNh8mEBbenxaxyx5EjN.4snirEA-93MXOl05ti8ZT3a9mXdIcgI"}
* rack.request.query_string : state=f4eaca9fbed2a77c0baac50cdbdccab7eee671179bb8fc43&code=4/YRcyYZzkrfNh8mEBbenxaxyx5EjN.4snirEA-93MXOl05ti8ZT3a9mXdIcgI
* rack.run_once : false
* rack.session : {"session_id"=>"5b45534889547514b01f59e39f21f74a", "_csrf_token"=>"GJAFgiVO3zd/INIW6DqDh/VYGlvoZ8WuEKAX1HseJwA="}
* rack.session.options : {:path=>"/", :domain=>nil, :expire_after=>nil, :secure=>false, :httponly=>true, :id=>"5b45534889547514b01f59e39f21f74a"}
* rack.url_scheme : http
* rack.version : [1, 0]
* warden : Warden::Proxy:92171780 #config={:default_scope=>:user, :scope_defaults=>{}, :default_strategies=>{:user=>[:rememberable, :database_authenticatable]}, :intercept_401=>false, :failure_app=>#<Devise::Delegator:0xbf7cb04>}
* Process: 31617
* Server : STORK
-------------------------------
Backtrace:
-------------------------------
/home/test/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/net/http.rb:762:in `initialize'
/home/test/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/net/http.rb:762:in `open'
/home/test/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/net/http.rb:762:in `block in connect'
/home/test/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/timeout.rb:54:in `timeout'
/home/test/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/timeout.rb:99:in `timeout'
/home/test/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/net/http.rb:762:in `connect'
/home/test/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/net/http.rb:755:in `do_start'
/home/test/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/net/http.rb:744:in `start'
/home/test/.rvm/rubies/ruby-1.9.3-p194/lib/ruby/1.9.1/net/http.rb:1284:in `request'
rest-client (1.6.7) lib/restclient/net_http_ext.rb:51:in `request'
faraday (0.8.2) lib/faraday/adapter/net_http.rb:73:in `perform_request'
faraday (0.8.2) lib/faraday/adapter/net_http.rb:36:in `call'
faraday (0.8.2) lib/faraday/request/url_encoded.rb:14:in `call'
faraday (0.8.2) lib/faraday/connection.rb:226:in `run_request'
oauth2 (0.8.0) lib/oauth2/client.rb:88:in `request'
oauth2 (0.8.0) lib/oauth2/client.rb:131:in `get_token'
oauth2 (0.8.0) lib/oauth2/strategy/auth_code.rb:29:in `get_token'
omniauth-oauth2 (1.1.0) lib/omniauth/strategies/oauth2.rb:100:in `build_access_token'
omniauth-oauth2 (1.1.0) lib/omniauth/strategies/oauth2.rb:75:in `callback_phase'
omniauth (1.1.0) lib/omniauth/strategy.rb:219:in `callback_call'
omniauth (1.1.0) lib/omniauth/strategy.rb:175:in `call!'
omniauth (1.1.0) lib/omniauth/strategy.rb:157:in `call'
sass (3.1.20) lib/sass/plugin/rack.rb:54:in `call'
exception_notification (2.6.1) lib/exception_notifier.rb:34:in `call'
warden (1.2.1) lib/warden/manager.rb:35:in `block in call'
warden (1.2.1) lib/warden/manager.rb:34:in `catch'
warden (1.2.1) lib/warden/manager.rb:34:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/best_standards_support.rb:17:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/head.rb:14:in `call'
rack (1.2.5) lib/rack/methodoverride.rb:24:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/params_parser.rb:21:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/flash.rb:182:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/session/abstract_store.rb:149:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/cookies.rb:302:in `call'
activerecord (3.0.9) lib/active_record/query_cache.rb:32:in `block in call'
activerecord (3.0.9) lib/active_record/connection_adapters/abstract/query_cache.rb:28:in `cache'
activerecord (3.0.9) lib/active_record/query_cache.rb:12:in `cache'
activerecord (3.0.9) lib/active_record/query_cache.rb:31:in `call'
activerecord (3.0.9) lib/active_record/connection_adapters/abstract/connection_pool.rb:354:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/callbacks.rb:46:in `block in call'
activesupport (3.0.9) lib/active_support/callbacks.rb:416:in `_run_call_callbacks'
actionpack (3.0.9) lib/action_dispatch/middleware/callbacks.rb:44:in `call'
rack (1.2.5) lib/rack/sendfile.rb:106:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/remote_ip.rb:48:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/show_exceptions.rb:47:in `call'
railties (3.0.9) lib/rails/rack/logger.rb:13:in `call'
rack (1.2.5) lib/rack/runtime.rb:17:in `call'
activesupport (3.0.9) lib/active_support/cache/strategy/local_cache.rb:72:in `call'
rack (1.2.5) lib/rack/lock.rb:13:in `block in call'
<internal:prelude>:10:in `synchronize'
rack (1.2.5) lib/rack/lock.rb:13:in `call'
actionpack (3.0.9) lib/action_dispatch/middleware/static.rb:30:in `call'
railties (3.0.9) lib/rails/application.rb:168:in `call'
railties (3.0.9) lib/rails/application.rb:77:in `method_missing'
passenger (3.0.14) lib/phusion_passenger/rack/request_handler.rb:96:in `process_request'
passenger (3.0.14) lib/phusion_passenger/abstract_request_handler.rb:516:in `accept_and_process_next_request'
passenger (3.0.14) lib/phusion_passenger/abstract_request_handler.rb:274:in `main_loop'
passenger (3.0.14) lib/phusion_passenger/rack/application_spawner.rb:206:in `start_request_handler'
passenger (3.0.14) lib/phusion_passenger/rack/application_spawner.rb:171:in `block in handle_spawn_application'
passenger (3.0.14) lib/phusion_passenger/utils.rb:470:in `safe_fork'
passenger (3.0.14) lib/phusion_passenger/rack/application_spawner.rb:166:in `handle_spawn_application'
passenger (3.0.14) lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
passenger (3.0.14) lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
passenger (3.0.14) lib/phusion_passenger/abstract_server.rb:180:in `start'
passenger (3.0.14) lib/phusion_passenger/rack/application_spawner.rb:129:in `start'
passenger (3.0.14) lib/phusion_passenger/spawn_manager.rb:253:in `block (2 levels) in spawn_rack_application'
passenger (3.0.14) lib/phusion_passenger/abstract_server_collection.rb:132:in `lookup_or_add'
passenger (3.0.14) lib/phusion_passenger/spawn_manager.rb:246:in `block in spawn_rack_application'
passenger (3.0.14) lib/phusion_passenger/abstract_server_collection.rb:82:in `block in synchronize'
<internal:prelude>:10:in `synchronize'
passenger (3.0.14) lib/phusion_passenger/abstract_server_collection.rb:79:in `synchronize'
passenger (3.0.14) lib/phusion_passenger/spawn_manager.rb:244:in `spawn_rack_application'
passenger (3.0.14) lib/phusion_passenger/spawn_manager.rb:137:in `spawn_application'
passenger (3.0.14) lib/phusion_passenger/spawn_manager.rb:275:in `handle_spawn_application'
passenger (3.0.14) lib/phusion_passenger/abstract_server.rb:357:in `server_main_loop'
passenger (3.0.14) lib/phusion_passenger/abstract_server.rb:206:in `start_synchronously'
passenger (3.0.14) helper-scripts/passenger-spawn-server:99:in `<main>'
As you can see faraday can't reach network connection.
How Can I setup faraday or maybe rest_client to use Proxy settings?
Thanks in advance.

Answer 1

I have solved problem by using monkey patching Oauth2.
require 'faraday'
module OAuth2
# The OAuth2::Client class
class Client
# The Faraday connection object
def connection
options[:connection_opts].merge!({:proxy => 'http://10.10.16.8:3128'})
#connection ||= begin
conn = Faraday.new(site, options[:connection_opts])
conn.build do |b|
options[:connection_build].call(b)
end if options[:connection_build]
conn
end
end
end
end

Answer 2

Here is a better solution :
Rails.application.config.middleware.use OmniAuth::Builder do
provider :google_oauth2, 'login', 'password' {
scope: ['userinfo.email'],
access_type: 'online',
client_options: {connection_opts: {proxy: 'http://myproxy:3128'}}
}
end

Answer 3

Put in an initializer
RestClient.proxy = "http://proxy.example.com/"