referer方法添加只返回host的功能。fix #69

lib/Lib/Core/Controller.js

@@ -4,6 +4,8 @@
  */
 var fs = require("fs");
 var path = require("path");
+var url = require("url");
+
 module.exports = Class(function() {
     "use strict";
     //callback正则
@@ -168,14 +170,19 @@ module.exports = Class(function() {
          * @return {[type]} [description]
          */
         userAgent: function(){
-            return this.header("user-agent");
+            return this.http.headers['user-agent'] || "";
         },
         /**
          * 获取referrer
          * @return {[type]} [description]
          */
-        referer: function(){
-            return this.header("referer");
+        referer: function(host){
+            var referer = this.http.headers.referer || this.http.headers.referfer || "";
+            if (!referer || !host) {
+                return referer;
+            }
+            var info = url.parse(referer);
+            return info.hostname;
         },
         /**
          * cookie操作

lib/Lib/Core/Http.js

@@ -116,9 +116,6 @@ module.exports = Class(function(){
                 method: this.req.method.toLowerCase(),
                 headers: this.req.headers,
                 getHeader: function(name){
-                    if (name === 'referrer') {
-                        name = 'referer';
-                    }
                     return this.headers[name] || "";
                 },
                 post: {},