fix force ssl logic for lb configuration

app/controllers/application_controller.rb

@@ -24,6 +24,9 @@ class ApplicationController < ActionController::Base
   before_action :migration_error?
   before_action :set_locale
 
+  # Force SSL for loadbalancer configurations.
+  before_filter :redirect_to_https
+
   protect_from_forgery with: :exception
 
   MEETING_NAME_LIMIT = 90
@@ -88,4 +91,9 @@ class ApplicationController < ActionController::Base
       moderator_message: "#{invite_msg}\n\n#{request.base_url + room_path(@room)}",
     }
   end
+
+
+  def redirect_to_https
+    redirect_to :protocol => "https://" if ( loadbalanced_configuration? and request.headers["X-Forwarded-Proto"] == "http")
+  end
 end