diff --git a/conf/wide.go b/conf/wide.go
index d0861e1..e1cb31b 100644
--- a/conf/wide.go
+++ b/conf/wide.go
@@ -102,8 +102,6 @@ func Load(confPath, confData, confServer, confLogLevel string) {
 }
 
 func initUsers() {
-	os.MkdirAll(Wide.Data+PathSeparator+"users", 0755)
-
 	f, err := os.Open(Wide.Data + PathSeparator + "users")
 	if nil != err {
 		logger.Error(err)
@@ -202,12 +200,20 @@ func initWide(confPath, confData, confServer, confLogLevel string) {
 	}
 	Wide.Data = strings.Replace(Wide.Data, "${home}", home, -1)
 	Wide.Data = filepath.Clean(Wide.Data)
-	if !util.File.IsExist(Wide.Data) {
-		if err := os.MkdirAll(Wide.Data, 0775); nil != err {
-			logger.Errorf("Create data directory [%s] error", err)
+	if err := os.MkdirAll(Wide.Data+"/playground/", 0755); nil != err {
+		logger.Errorf("Create data directory [%s] error", err)
 
-			os.Exit(-1)
-		}
+		os.Exit(-1)
+	}
+	if err := os.MkdirAll(Wide.Data+"/users/", 0755); nil != err {
+		logger.Errorf("Create data directory [%s] error", err)
+
+		os.Exit(-1)
+	}
+	if err := os.MkdirAll(Wide.Data+"/workspaces/", 0755); nil != err {
+		logger.Errorf("Create data directory [%s] error", err)
+
+		os.Exit(-1)
 	}
 
 	// Server
diff --git a/playground/file.go b/playground/file.go
index 50e9b57..63ecdf6 100644
--- a/playground/file.go
+++ b/playground/file.go
@@ -85,7 +85,7 @@ func SaveHandler(w http.ResponseWriter, r *http.Request) {
 	data["fileName"] = fileName
 
 	// Step3. write file
-	filePath := filepath.Clean(conf.Wide.Data + "/playground" + fileName)
+	filePath := filepath.Clean(conf.Wide.Data + "/playground/" + fileName)
 	fout, err := os.Create(filePath)
 	fout.WriteString(code)
 	if err := fout.Close(); nil != err {
diff --git a/playground/playgrounds.go b/playground/playgrounds.go
index 68c643c..fdbe5ca 100644
--- a/playground/playgrounds.go
+++ b/playground/playgrounds.go
@@ -59,7 +59,7 @@ func IndexHandler(w http.ResponseWriter, r *http.Request) {
 
 	if strings.HasSuffix(r.URL.Path, ".go") {
 		fileNameArg := r.URL.Path[len("/playground/"):]
-		filePath := filepath.Clean(conf.Wide.Data+ "/playground" + fileNameArg)
+		filePath := filepath.Clean(conf.Wide.Data+ "/playground/" + fileNameArg)
 
 		bytes, err := ioutil.ReadFile(filePath)
 		if nil != err {
@@ -94,7 +94,6 @@ func IndexHandler(w http.ResponseWriter, r *http.Request) {
 	logger.Debugf("User [%s] has [%d] sessions", uid, len(wideSessions))
 
 	t, err := template.ParseFiles("views/playground/index.html")
-
 	if nil != err {
 		logger.Error(err)
 		http.Error(w, err.Error(), http.StatusInternalServerError)
diff --git a/session/oauthctl.go b/session/oauthctl.go
index d13a586..fa04f39 100644
--- a/session/oauthctl.go
+++ b/session/oauthctl.go
@@ -209,14 +209,7 @@ func addUser(userId, userName, userAvatar string) string {
 }
 
 // helloWorld generates the 'Hello, 世界' source code.
-//  1. src/hello/main.go
-//  2. src/web/main.go
 func helloWorld(workspace string) {
-	consoleHello(workspace)
-	webHello(workspace)
-}
-
-func consoleHello(workspace string) {
 	dir := workspace + conf.PathSeparator + "src" + conf.PathSeparator + "hello"
 	if err := os.MkdirAll(dir, 0755); nil != err {
 		logger.Error(err)
@@ -232,59 +225,5 @@ func consoleHello(workspace string) {
 	}
 
 	fout.WriteString(conf.HelloWorld)
-
-	fout.Close()
-}
-
-func webHello(workspace string) {
-	dir := workspace + conf.PathSeparator + "src" + conf.PathSeparator + "web"
-	if err := os.MkdirAll(dir, 0755); nil != err {
-		logger.Error(err)
-
-		return
-	}
-
-	fout, err := os.Create(dir + conf.PathSeparator + "main.go")
-	if nil != err {
-		logger.Error(err)
-
-		return
-	}
-
-	code := `package main
-
-import (
-	"fmt"
-	"math/rand"
-	"net/http"
-	"strconv"
-	"time"
-)
-
-func main() {
-	http.HandleFunc("/", func(w http.ResponseWriter, r *http.Request) {
-		w.Write([]byte("Hello, 世界"))
-	})
-
-	port := getPort()
-
-	// you may need to change the address
-	fmt.Println("Open https://wide.b3log.org:" + port + " in your browser to see the result") 
-
-	if err := http.ListenAndServe(":"+port, nil); nil != err {
-		fmt.Println(err)
-	}
-}
-
-func getPort() string {
-	rand.Seed(time.Now().UnixNano())
-
-	return strconv.Itoa(7000 + rand.Intn(8000-7000))
-}
-
-`
-
-	fout.WriteString(code)
-
 	fout.Close()
 }
diff --git a/static/js/playground.js b/static/js/playground.js
index b296cea..ae6a253 100644
--- a/static/js/playground.js
+++ b/static/js/playground.js
@@ -218,7 +218,7 @@ var playground = {
                 if (!hovered) {
                     $(".menu .share-panel").hide();
                 }
-            }, http.StatusInternalServerError;
+            }, 500);
         });
 
         $(".menu .share-panel").hover(function () {
diff --git a/views/index.html b/views/index.html
index 5b53d9e..dd7cd26 100644
--- a/views/index.html
+++ b/views/index.html
@@ -559,7 +559,7 @@
         </div>
         <script>
             var channelScheme = "https" === window.location.protocol ? "wss":"ws";
-            var channel = channelScheme + "://" + window.location.hostname;
+            var channel = channelScheme + "://" + window.location.hostname + ":" + window.location.port;
             var config = {
                     "pathSeparator": '{{.pathSeparator}}',
                     "label": {{.i18n}},
diff --git a/views/playground/index.html b/views/playground/index.html
index 935a6d1..c520042 100644
--- a/views/playground/index.html
+++ b/views/playground/index.html
@@ -82,7 +82,7 @@
         <div id="dialogShare" class="fn-none"></div>
         <script>
             var channelScheme = "https" === window.location.protocol ? "wss":"ws";
-            var channel = channelScheme + "://" + window.location.hostname;
+            var channel = channelScheme + "://" + window.location.hostname + ":" + window.location.port;
                     var config = {
                             "channel": channel,
                             "wideSessionId": "{{.sid}}",