diff --git a/package.json b/package.json
index 07728d8..cdf1c65 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "anyproxy",
-  "version": "2.9.3",
+  "version": "3.0.0",
   "description": "A fully configurable proxy in NodeJS, which can handle HTTPS requests perfectly.",
   "main": "proxy.js",
   "bin": {
@@ -13,6 +13,7 @@
     "commander": "~2.3.0",
     "entities": "^1.1.1",
     "express": "^4.8.5",
+    "ip": "^0.3.2",
     "juicer": "^0.6.6-stable",
     "nedb": "^0.11.0",
     "qrcode-npm": "0.0.3",
@@ -20,27 +21,12 @@
     "ws": "^0.4.32"
   },
   "devDependencies": {
-    "proxy-eval": "^1.1.0"
+    "proxy-eval": ">=1.1.1"
   },
   "scripts": {
     "test": "node test.js"
   },
-  "optionalDependencies": {
-    "underscore": "^1.7.0",
-    "cookie": "^0.1.2",
-    "mysql": "^2.5.2",
-    "iconv-lite": "^0.4.4",
-    "ip": "^0.3.2",
-    "jquery": "^2.1.1",
-    "jsdom": "^1.0.3",
-    "socks5-http-client": "^0.1.6",
-    "socks5-https-client": "^0.2.2",
-    "http-proxy-agent":"^0.2.6",
-    "https-proxy-agent":"^0.3.5",
-    "tcp-ping":"^0.1.1",
-    "request":"^2.48.0",
-    "moment":"^2.8.3"
-  },
+  "optionalDependencies": {},
   "repository": {
     "type": "git",
     "url": "https://github.com/alibaba/anyproxy"
diff --git a/proxy.js b/proxy.js
index 27a005c..f2e52f6 100644
--- a/proxy.js
+++ b/proxy.js
@@ -1,22 +1,5 @@
-//mix some modules to global.util
 try{
-    GLOBAL.util                           = require('./lib/util');
-    GLOBAL.util['iconv-lite']             = require("iconv-lite");
-    GLOBAL.util['colorful']               = require("colorful");
-    GLOBAL.util['path']                   = require("path");
-    GLOBAL.util['jsdom']                  = require('jsdom');
-    GLOBAL.util['cookie']                 = require('cookie');
-    GLOBAL.util['jquery']                 = require('jquery');
-    GLOBAL.util['mysql']                  = require('mysql');
-    GLOBAL.util['Socks5ClientHttpAgent']  = require('socks5-http-client/lib/Agent');
-    GLOBAL.util['Socks5ClientHttpsAgent'] = require('socks5-https-client/lib/Agent');
-    GLOBAL.util['HttpProxyAgent']         = require('http-proxy-agent');
-    GLOBAL.util['HttpsProxyAgent']        = require('https-proxy-agent');
-    GLOBAL.util['tcp-ping']               = require('tcp-ping');
-    GLOBAL.util['request']                = require('request');
-    GLOBAL.util['async']                  = require('async');
-    GLOBAL.util['underscore']             = require('underscore');
-    GLOBAL.util['moment']                 = require('moment');
+    GLOBAL.util = require('./lib/util');
 }catch(e){}
 
 var http = require('http'),
@@ -155,6 +138,13 @@ function proxyServer(option){
                         }
                     });
 
+                    //watch dog
+                    setInterval(function(argument) {
+                        child_webServer.send({
+                            type:"watch"
+                        });
+                    },5000);
+
                     //kill web server when father process exits
                     process.on("exit",function(code){
                         child_webServer.kill();
@@ -168,7 +158,6 @@ function proxyServer(option){
                         process.exit();
                     });
 
-
                     GLOBAL.recorder.on("update",function(data){
                         child_webServer.send({
                             type: "update",
@@ -177,9 +166,7 @@ function proxyServer(option){
                     });
 
                     var configServer = new UIConfigServer(proxyConfigPort);
-                    configServer.on("rule_changed",function() {
-                        // console.log(arguments);
-                    });
+                    configServer.on("rule_changed",function() {});
 
                     var tipText,webUrl;
                     webUrl  = "http://" + ip.address() + ":" + proxyWebPort +"/";
diff --git a/webServer.js b/webServer.js
index de50889..54fab85 100644
--- a/webServer.js
+++ b/webServer.js
@@ -116,7 +116,8 @@ inherits(proxyWebServer, events.EventEmitter);
 
 var	param  = process.argv.slice(2),
     server = new proxyWebServer(param[0],param[1],param[2],param[3],param[4]),
-	cbMap = {}; // id body cb
+	cbMap  = {}, // id body cb
+    lastestHeartbeat = new Date().getTime();
 
 
 process.on("message",function(data){
@@ -130,9 +131,18 @@ process.on("message",function(data){
 			cbMap[key].body = data.body;
 			cbMap[key].cb.call(null,data.body);
 		}catch(e){}
-	}
+	}else if(data.type == "watch"){
+        lastestHeartbeat = new Date().getTime();
+    }
 });
 
+//watch dog
+setInterval(function(){
+    if(new Date().getTime() - lastestHeartbeat  > 10 * 1000){
+        process.exit();
+    }
+},7000);
+
 function fetchBody(id,cb){
 	var key = id + "";
 	if(cbMap[key]){