[Feature Request]: API support http callback

[huaizong]

Is there an existing issue for this?

• [X] I have searched the existing issues and checked the recent builds/commits

What would your feature do ?

I expect to add an HTTP callback capability for the "txt2img" and "img2img" interfaces in order to provide HTTP callbacks. This should include the ability to report progress and completion of tasks.

Proposed workflow

1. support http callback when task finished
2. support progress change report by http callback

Additional information

No response

[w-e-w]

so what's wrong with /sdapi/v1/progress?

[huaizong]

so what's wrong with /sdapi/v1/progress?

In kubernetes deploy environment, we need to achieve the capability of submitting a task while simultaneously querying its progress status within the same Pod. Utilizing /sdapi/v1/progress doesn't readily facilitate this scenario. If support for asynchronous callbacks might present itself as a potential solution.