diff --git a/check_test.go b/check_test.go
index af9c720..5df9f48 100644
--- a/check_test.go
+++ b/check_test.go
@@ -23,7 +23,7 @@ func TestCheckDomain(t *testing.T) {
 
 	t.Log(CheckDomain(d))
 	t.Log(CheckDomain(d1))
-	t.Log(CheckDomain(d1))
-	t.Log(CheckDomain(d1))
+	t.Log(CheckDomain(d2))
+	t.Log(CheckDomain(d3))
 	t.Log(CheckDomain(d4))
 }
diff --git a/elasticsearch_test.go b/elasticsearch_test.go
index 8d28072..5461253 100644
--- a/elasticsearch_test.go
+++ b/elasticsearch_test.go
@@ -62,7 +62,7 @@ func TestIndexDocument(t *testing.T) {
 }
 
 func TestIndexQuerySimple(t *testing.T) {
-	_, err := IndexQuerySimple(INDEX, TYPE, "JS")
+	_, err := IndexQuerySimple(INDEX, TYPE, 10, 1, "JS")
 	if err != nil {
 		t.Error(err)
 	}
diff --git a/ping.go b/ping.go
new file mode 100644
index 0000000..3b0a53f
--- /dev/null
+++ b/ping.go
@@ -0,0 +1,40 @@
+package main
+
+import (
+	"fmt"
+	"io/ioutil"
+	"net/http"
+	"net/url"
+
+	"github.com/eiblog/utils/logd"
+)
+
+type Feeder interface {
+	PingFunc(url string)
+}
+
+// superfeedr
+// http://<your-hub-name>.superfeedr.com/
+type Superfeedr struct {
+	URL string
+}
+
+func (f *Superfeedr) PingFunc(urls ...string) {
+	vals := url.Values{}
+	vals.Set("hub.mode", "publish")
+	for _, u := range urls {
+		vals.Add("hub.url", u)
+	}
+	res, err := http.PostForm(f.URL, vals)
+	if err != nil {
+		logd.Error(err)
+		return
+	}
+	defer res.Body.Close()
+	data, err := ioutil.ReadAll(res.Body)
+	if err != nil {
+		logd.Error(err)
+		return
+	}
+	fmt.Println(string(data), res.StatusCode)
+}
diff --git a/ping_test.go b/ping_test.go
new file mode 100644
index 0000000..ef66429
--- /dev/null
+++ b/ping_test.go
@@ -0,0 +1,14 @@
+// Package main provides ...
+package main
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/eiblog/eiblog/setting"
+)
+
+func TestPing(t *testing.T) {
+	sf := Superfeedr{URL: fmt.Sprintf("https://%s.superfeedr.com", setting.Conf.Superfeedr)}
+	sf.PingFunc("https://deepzz.com/rss.html")
+}
diff --git a/pingrpc2.go b/pingrpc2.go
deleted file mode 100644
index 23c7da7..0000000
--- a/pingrpc2.go
+++ /dev/null
@@ -1,4 +0,0 @@
-package main
-
-// baidu==>http://zhanzhang.baidu.com/tools/ping
-// http://ping.baidu.com/ping/RPC2