diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
index 6bf0da18..f000201d 100644
--- a/docs/CHANGELOG.md
+++ b/docs/CHANGELOG.md
@@ -1,6 +1,6 @@
 # Release History
 
-## v4.3.0 (2022-10-24)
+## v4.3.0 (2022-10-27)
 
 Release hrp sub package `uixt` to support iOS/Android UI automation testing 🎉
 
diff --git a/hrp/internal/version/VERSION b/hrp/internal/version/VERSION
index bf493a39..1ddc0f60 100644
--- a/hrp/internal/version/VERSION
+++ b/hrp/internal/version/VERSION
@@ -1 +1 @@
-v4.3.0-10241627
\ No newline at end of file
+v4.3.0
\ No newline at end of file
diff --git a/hrp/pkg/uixt/android_test.go b/hrp/pkg/uixt/android_test.go
index 03354830..21deeaf3 100644
--- a/hrp/pkg/uixt/android_test.go
+++ b/hrp/pkg/uixt/android_test.go
@@ -873,11 +873,37 @@ func TestDriver_AppLaunch(t *testing.T) {
 		t.Fatal(err)
 	}
 
-	// screenshot, err := driver.Screenshot()
-	// if err != nil {
-	// 	t.Fatal(err)
-	// }
-	// t.Log(ioutil.WriteFile("/Users/hero/Desktop/s1.png", screenshot.Bytes(), 0600))
+	raw, err := driver.Screenshot()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	t.Log(ioutil.WriteFile("s1.png", raw.Bytes(), 0o600))
+}
+
+func TestDriver_KeepAlive(t *testing.T) {
+	device, _ := NewAndroidDevice()
+	driver, err := device.NewUSBDriver(nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	err = driver.AppLaunch("com.android.settings")
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	_, err = driver.Screenshot()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	time.Sleep(60 * time.Second)
+
+	_, err = driver.Screenshot()
+	if err != nil {
+		t.Fatal(err)
+	}
 }
 
 func TestDriver_AppTerminate(t *testing.T) {
diff --git a/hrp/pkg/uixt/client.go b/hrp/pkg/uixt/client.go
index d2308b10..5ebd9309 100644
--- a/hrp/pkg/uixt/client.go
+++ b/hrp/pkg/uixt/client.go
@@ -93,18 +93,10 @@ func (wd *Driver) httpRequest(method string, rawURL string, rawBody []byte) (raw
 }
 
 func convertToHTTPClient(conn net.Conn) *http.Client {
-	// set tcp keep alive
-	tcpConn := conn.(*net.TCPConn)
-	if err := tcpConn.SetKeepAlive(true); err != nil {
-		log.Error().Err(err).Msg("set tcp keep alive failed")
-	}
-	if err := tcpConn.SetKeepAlivePeriod(30 * time.Second); err != nil {
-		log.Error().Err(err).Msg("set tcp keep alive period failed")
-	}
 	return &http.Client{
 		Transport: &http.Transport{
 			DialContext: func(_ context.Context, _, _ string) (net.Conn, error) {
-				return tcpConn, nil
+				return conn, nil
 			},
 		},
 		Timeout: 0,
diff --git a/hrp/pkg/uixt/ocr_vedem_test.go b/hrp/pkg/uixt/ocr_vedem_test.go
new file mode 100644
index 00000000..2bb650b7
--- /dev/null
+++ b/hrp/pkg/uixt/ocr_vedem_test.go
@@ -0,0 +1,51 @@
+//go:build localtest
+
+package uixt
+
+import (
+	"fmt"
+	"os"
+	"testing"
+)
+
+func checkOCR(buff []byte) error {
+	service, err := newVEDEMOCRService()
+	if err != nil {
+		return err
+	}
+	ocrResults, err := service.getOCRResult(buff)
+	if err != nil {
+		return err
+	}
+	fmt.Println(ocrResults)
+	return nil
+}
+
+func TestOCRWithScreenshot(t *testing.T) {
+	device, _ := NewAndroidDevice()
+	driver, err := device.NewUSBDriver(nil)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	raw, err := driver.Screenshot()
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := checkOCR(raw.Bytes()); err != nil {
+		t.Fatal(err)
+	}
+}
+
+func TestOCRWithLocalFile(t *testing.T) {
+	imagePath := "/Users/debugtalk/Downloads/s1.png"
+	file, err := os.ReadFile(imagePath)
+	if err != nil {
+		t.Fatal(err)
+	}
+
+	if err := checkOCR(file); err != nil {
+		t.Fatal(err)
+	}
+}