Why do vllm set default keep-alive timeout to 5s?

[SeungminHeo]

Hi,

For huge size and long-context models takes more than 5s and no additional connections or requests are sent to server, so server can close connection and trigger exception. For example, openai sdk that uses httpx makes error messageServer disconnected without sending a response.

For this, I want to control this with uvicorn arguments, can this be overriden?
This is a "Guess", but exceptions are actually happening.