diff --git a/index.js b/index.js
index 469eb7e..f5d22fa 100644
--- a/index.js
+++ b/index.js
@@ -1,3 +1,5 @@
+var PROXY_PORT = 8001;
+
 var http      = require('http'),
     https     = require('https'),
     fs        = require('fs'),
@@ -11,11 +13,11 @@ var serverMgrInstance = new serverMgr();
 var httpProxyServer = http.createServer(function (req, res) {
     var urlPattern = url.parse(req.url);
     var options = {
-        hostname: urlPattern.host,
-        port: urlPattern.port || 80,
-        path: urlPattern.path,
-        method: req.method,
-        headers:req.headers
+        hostname : urlPattern.host,
+        port     : urlPattern.port || 80,
+        path     : urlPattern.path,
+        method   : req.method,
+        headers  : req.headers
     };
 
     var directReq = http.request(options,function(directRes){
@@ -46,7 +48,7 @@ httpProxyServer.on('connect', function(req, socket, head){
                     });
                 });     
             }catch(e){
-                console.log("err --");//TODO 
+                console.log("err when connect to local https server (__hostname)".replace(/__hostname/,hostname));//TODO 
             }
             
         }else{
@@ -55,4 +57,5 @@ httpProxyServer.on('connect', function(req, socket, head){
     });
 });
 
-httpProxyServer.listen(8001);
\ No newline at end of file
+httpProxyServer.listen(PROXY_PORT);
+console.log("proxy started at port " + PROXY_PORT);
\ No newline at end of file
diff --git a/lib/serverMgr.js b/lib/serverMgr.js
index 0782ebd..d72e9fb 100644
--- a/lib/serverMgr.js
+++ b/lib/serverMgr.js
@@ -8,6 +8,10 @@ var getPort   = require('./getPort'),
     url       = require('url'),
     exec      = require('child_process').exec;
 
+if(!fs.exists("cert/tmpCert")){
+    fs.mkdir("cert/tmpCert");
+}
+
 module.exports =function(){
     var self = this;
     self.serverList = {
@@ -31,7 +35,6 @@ module.exports =function(){
 
         //create server with corresponding CA
         }else{
-            fs.mkdir("cert/tmpCert");
             var keyFile = "./cert/tmpCert/__hostname.key".replace(/__hostname/,hostname),
                 crtFile = "./cert/tmpCert/__hostname.crt".replace(/__hostname/,hostname);