update ota

services/emqx-agent/agent.go

@@ -322,7 +322,7 @@ func (a *Access) chunkUpgrade(params rpcs.ChunkUpgrade) error {
 		return errors.New(fmt.Sprintf("文件:%s 获取失败", params.FileId))
 	}
 	start := params.Offset * int(params.Size)
-	stop := (params.Offset + 1) + int(params.Size)
+	stop := (params.Offset + 1) * int(params.Size)
 	if stop >= len(fileReply.File) {
 		stop = len(fileReply.File)
 	}