Add a custom request class to allow for helper methods.

Fixes #58.

lib/rack/attack.rb

@@ -10,7 +10,8 @@ class Rack::Attack
   autoload :Track,     'rack/attack/track'
   autoload :StoreProxy,'rack/attack/store_proxy'
   autoload :Fail2Ban,  'rack/attack/fail2ban'
-  autoload :Allow2Ban,  'rack/attack/allow2ban'
+  autoload :Allow2Ban, 'rack/attack/allow2ban'
+  autoload :Request,   'rack/attack/request'
 
   class << self
 
@@ -88,7 +89,7 @@ class Rack::Attack
   end
 
   def call(env)
-    req = Rack::Request.new(env)
+    req = Rack::Attack::Request.new(env)
 
     if whitelisted?(req)
       @app.call(env)

lib/rack/attack/request.rb

@@ -0,0 +1,6 @@
+module Rack
+  class Attack
+    class Request < ::Rack::Request
+    end
+  end
+end

spec/rack_attack_request_spec.rb

@@ -0,0 +1,19 @@
+require_relative 'spec_helper'
+
+describe 'Rack::Attack' do
+  describe 'helpers' do
+    before do
+      class Rack::Attack::Request
+        def remote_ip
+          ip
+        end
+      end
+
+      Rack::Attack.whitelist('valid IP') do |req|
+        req.remote_ip == "127.0.0.1"
+      end
+    end
+
+    allow_ok_requests
+  end
+end