Returns empty when using OpenAI-API-compatible in dify

[huu3301]

I deployed an openai-like interface myself, and it was normal for the interface to use OpenAI().chat.completions.create requests.
When the stream was true, the result returned by the interface was as follows：

---

ChatCompletionChunk(id='803319e9-8427-4789-8d85-a8fe4291436f', choices=[Choice(delta=ChoiceDelta(content='hello', function_call=None, role=None, tool_calls=None), finish_reason=None, index=0, logprobs=None)], created=1717588547, model='Qwen1.5-72B-Chat-GPTQ-Int4', object='chat.completion.chunk', system_fingerprint=None, usage=None)

---

But when I used OpenAI-API-compatible in dify, the result was empty.

The logs of openai-like interface showed that the request sended by dify was received and returned normally.

How can I solve this problem in dify? Is the parameter returned by the openai-like interface incorrect?

[huu3301]

I found the reason.
In the interface code, the default parameter of sep in sse_starlette.sse.EventSourceResponse was "\r\n".
In my case, the delimiter for streaming results in dify should set to "\r\n\r\n", not "\n\n"