Use clone of http.Transport defaults

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,

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,

service/api/api.go

@@ -53,11 +53,12 @@ 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,
-			},
+			Transport: tr,
 			Timeout:   5 * time.Second,
 		}
 	}

update/update.go

@@ -147,11 +147,12 @@ 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,
-		},
+		Transport: tr,
 		Timeout:   5 * time.Second,
 	}