openai streamFunc not real stream

[FunkyYang]

I used

   	chains.WithStreamingFunc(func(ctx context.Context, chunk []byte) error {
   		log.Printf("time:%s,chunk:%s", time.Now().Format("15:04:05"), string(chunk))
   		return nil
   	})

and observe that the messages are spited out at the same time?and why?

[lifejwang11]

please give more details about this code. @FunkyYang