remove connect and cookie dependency

lib/index.js

@@ -1,29 +1,44 @@
-var connectUtils = require('connect').utils,
-    cookie = require('cookie'),
-    xtend = require('xtend');
+var xtend = require('xtend');
+
+function parseCookie(auth, cookieHeader) {
+  var cookieParser = auth.cookieParser(auth.secret);
+  var req = {
+    headers:{
+      cookie: cookieHeader
+    }
+  };
+  var result;
+  cookieParser(req, {}, function (err) {
+    if (err) throw err;
+    result = req.signedCookies;
+  });
+  return result;
+}
 
 function authorize(options) {
   var defaults = {
-    passport: require('passport'),
-    key: 'connect.sid',
-    secret: null,
-    store: null,
-    success: null,
-    fail: null
+    passport:     require('passport'),
+    key:          'connect.sid',
+    secret:       null,
+    store:        null,
+    success:      null,
+    fail:         null
   };
 
   var auth = xtend({}, defaults, options );
   
   auth.userProperty = auth.passport._userProperty || 'user';
 
+  if (typeof auth.cookieParser === 'undefined' || !auth.cookieParser) {
+    throw new Error('cookieParser is required use connect.cookieParser or express.cookieParser');
+  }
+
   return function(data, accept){
     if (!data.headers.cookie) {
       return accept(null, false);
     }
 
-    var parsedCookie = cookie.parse(data.headers.cookie);
-
-    data.cookie = connectUtils.parseSignedCookies(parsedCookie, auth.secret);
+    data.cookie =  parseCookie(auth, data.headers.cookie);
 
     data.sessionID = data.cookie[ auth.key ];