Leverage Django 3.1+ async views to implement SSE

[Benoit Blanchon]

Hi,

Documentation for Django 3.1 says this about async views:

The main benefits are the ability to service hundreds of connections without using Python threads. This allows you to use slow streaming, long-polling, and other exciting response types.

I believe this means we could implement an SSE (Server-Sent Events) view without monopolizing a thread per client, but I didn't figure out exactly how.

I know about Django Channels, but I'm curious to see if we can avoid it. 

I initially thought StreamingHttpResponse was the way to go since it has been used successfully to implement SSE with synchronous views. Still, I would accept any solution based on asynchronous views.

I opened a bounty on stack-overflow, but so far, no viable solution was proposed.  

Does anyone know how we could leverage async views to implement SSE?

Best regards,
Benoit Blanchon