添加后台访问权限超时重新登录验证获取访问权限功能
diff --git a/webservice.go b/webservice.go
index 91b3209..31467dd 100644
--- a/webservice.go
+++ b/webservice.go
@@ -212,6 +212,17 @@
 	return nil
 }
 
+func (w *WebSession) updateAuth() {
+	for {
+		log.Debugf("设备: %v 正在尝试重新连接登录验证!", w.AppID)
+		err := w.Auth()
+		if err == nil {
+			return
+		}
+		time.Sleep(time.Second * 10)
+	}
+}
+
 // NewSession new session object
 func NewSession(appid, appsecret, termid, baseurl string, timeout int, sslVerify bool) *WebSession {
 	return &WebSession{
@@ -420,6 +431,10 @@
 		return
 	}
 
+	if r.StatusCode() == 403 || r.StatusCode() == 401 {
+		w.updateAuth()
+	}
+
 	if r.StatusCode() != 200 {
 		log.Errorf("Request Error %v", r.StatusCode())
 		err = fmt.Errorf("Request Error, StatusCode : %v", r.StatusCode())