[API] The connection won't close after generated, how to close it?

[Vescrity]

Run such a command:

curl -X POST http://127.0.0.1:7860/sdapi/v1/txt2img \
        -H "Content-Type: application/json" \
        -d '{                                               
    "cfg_scale": 7,                                                                                                  
    "height": 384,                                                                                                   
    "negative_prompt": "",                                                                             
    "prompt": "prompt",                                                                                                
    "sampler_name": "DPM++ 2M",                           
    "steps": 10,                                          
    "width": 384                                          
  }'

and the connection won't end. I think it should be closed. What should I do to make it close after finishing sending the data back?

I have noticed this for more than one years, and I think there should be a similar discussion, but here's too much discussions I just can't find it.

I know I can add a --max-time to close it, but I think it's not a good idea.