fix token repeat fetch in concurrent env

@@ -183,6 +183,11 @@ func (notify *GetuiNotification) GetAuthToken() (token string, err error) {
 
 	authMux.Lock()
 	defer authMux.Unlock()
+	// recheck
+	if authtoken != "" && expire.Unix() > time.Now().Unix() {
+		token = authtoken
+		return
+	}
 	url := notify.Url(notify.Options.AppId, authSign)
 	notify.Request = httplib.Post(strings.TrimSpace(url))
 	req := &AuthSignRequest{

@@ -3,6 +3,7 @@ package getuiV2
 import (
 	"openapi/pkg/infrastructure/push"
 	"openapi/pkg/infrastructure/utils"
+	"sync"
 	"testing"
 )
 
@@ -77,3 +78,29 @@ func TestGetuiPrd(t *testing.T) {
 		t.Fatal(err)
 	}
 }
+
+func TestGetAuthToken(t *testing.T) {
+	var wg sync.WaitGroup
+	round := 100
+	notification := &GetuiNotification{}
+	var tokenMap = make(map[string]string)
+	notification.Init(
+		push.DebugModule(true),
+
+		push.AppId("WgrbaaStTk7JElrXOCgUg6"),
+		push.AppKey("FG5lbqVrHa5rS9NVfxNP7"),
+		push.AppMasterSecret("FW3jMNLJrRARYKv2iqA5H5"),
+	)
+	for i := 0; i < round; i++ {
+		wg.Add(1)
+		go func() {
+			defer wg.Done()
+			token, _ := notification.GetAuthToken()
+			tokenMap[token] = token
+		}()
+	}
+	wg.Wait()
+	if len(tokenMap) > 1 {
+		t.Fatalf("token want 1 get %v", len(tokenMap))
+	}
+}