diff --git a/cluster/client/client.go b/cluster/client/client.go
index 3eed947b..4b058cbe 100644
--- a/cluster/client/client.go
+++ b/cluster/client/client.go
@@ -369,10 +369,9 @@ func (c *APIClient) call(method, path, contentType string, data io.Reader, origi
 
 func (c *APIClient) request(req *http.Request) (int, io.ReadCloser, error) {
 	if c.Client == nil {
-		tr := &http.Transport{
-			MaxIdleConns:    10,
-			IdleConnTimeout: 30 * time.Second,
-		}
+		tr := http.DefaultTransport.(*http.Transport).Clone()
+		tr.MaxIdleConns = 10
+		tr.IdleConnTimeout = 30 * time.Second
 
 		c.Client = &http.Client{
 			Transport: tr,
diff --git a/cluster/forwarder/forwarder.go b/cluster/forwarder/forwarder.go
index a2be10ab..9d2a4389 100644
--- a/cluster/forwarder/forwarder.go
+++ b/cluster/forwarder/forwarder.go
@@ -65,10 +65,9 @@ func New(config ForwarderConfig) (Forwarder, error) {
 		f.logger = log.New("")
 	}
 
-	tr := &http.Transport{
-		MaxIdleConns:    10,
-		IdleConnTimeout: 30 * time.Second,
-	}
+	tr := http.DefaultTransport.(*http.Transport).Clone()
+	tr.MaxIdleConns = 10
+	tr.IdleConnTimeout = 30 * time.Second
 
 	client := &http.Client{
 		Transport: tr,
diff --git a/service/api/api.go b/service/api/api.go
index 3afd02c5..fa47aa0f 100644
--- a/service/api/api.go
+++ b/service/api/api.go
@@ -53,12 +53,13 @@ func New(config Config) (API, error) {
 	}
 
 	if a.client == nil {
+		tr := http.DefaultTransport.(*http.Transport).Clone()
+		tr.MaxIdleConns = 10
+		tr.IdleConnTimeout = 30 * time.Second
+
 		a.client = &http.Client{
-			Transport: &http.Transport{
-				MaxIdleConns:    10,
-				IdleConnTimeout: 30 * time.Second,
-			},
-			Timeout: 5 * time.Second,
+			Transport: tr,
+			Timeout:   5 * time.Second,
 		}
 	}
 
diff --git a/update/update.go b/update/update.go
index 923f663e..25bceabf 100644
--- a/update/update.go
+++ b/update/update.go
@@ -147,12 +147,13 @@ func (s *checker) check() error {
 		CoreViewer:         uint64(metrics.Value("session_active", "collector", "hls").Val() + metrics.Value("session_active", "collector", "rtmp").Val()),
 	}
 
+	tr := http.DefaultTransport.(*http.Transport).Clone()
+	tr.MaxIdleConns = 10
+	tr.IdleConnTimeout = 30 * time.Second
+
 	client := &http.Client{
-		Transport: &http.Transport{
-			MaxIdleConns:    10,
-			IdleConnTimeout: 30 * time.Second,
-		},
-		Timeout: 5 * time.Second,
+		Transport: tr,
+		Timeout:   5 * time.Second,
 	}
 
 	var data bytes.Buffer