fix: UDM发送MML缓冲20k延迟500ms

lib/core/mml_client/mml_client.go

@@ -36,12 +36,11 @@ func NewMMLClient(ip string) (*MMLClient, error) {
 	fmt.Fprintln(conn, passwordMML)
 
 	// 发送后等待
-	sleepTime := conf.Get("mml.sleep").(int)
-	awaitTime := time.Duration(sleepTime) * time.Millisecond
+	awaitTime := time.Duration(500) * time.Millisecond
 	time.Sleep(awaitTime)
 
 	// 读取内容
-	buf := make([]byte, 1024*8)
+	buf := make([]byte, 20*1024)
 	n, err := conn.Read(buf)
 	if err != nil {
 		return nil, err
@@ -78,7 +77,7 @@ func (c *MMLClient) Receive() (string, error) {
 		}
 		return "", err
 	}
-
+	c.size += n
 	return string(buf[0:n]), nil
 }