How do use httpx with Django async view to stream response from remote server?

[ZipBrandon]

I am attempting to use Django to talk to my Remix server to stream a response. I cannot figure out what I am doing wrong when utilizing Django. If I adapt the use of Starlette to do it, it works perfectly.

In Django (using 4.2b1 since StreamingHttpResponse supports async generators!), I request the stream from the server with the following code:

async_client = httpx.AsyncClient()
...
async def get_streaming_data(url, headers):
    async_request = httpx.Request(
        "GET",
        url,
        headers=headers,
    )
    async_response = await async_client.send(
        async_request, stream=True, follow_redirects=False
    )

    async def stream_content():
        async for chunk in async_response.aiter_bytes():
            yield chunk

    response = StreamingHttpResponse(
        stream_content(),
        status=async_response.status_code,
        content_type=async_response.headers.get("content-type"),
    )

    return response

and in my Class Based View I request a service that is running on my host from Docker container

    async def get(self, *args, **kwargs):
        url = "http://host.docker.internal:3001/sandbox/testing-async/"
        return await get_streaming_data(url, self.get_request_headers())

Unfortunately with a streaming response I receive a raise RuntimeError('Event loop is closed'). I have tried to explicitly call .aclose() on the response and on the client with nothing helping out.

If I do a request to an endpoint that delivers a small response, it works fine. What am I missing about the concept of how this is supposed to work when keeping a stream open?

[ZipBrandon]

I have successfully resolved this. The issue was Middleware which wasn't handling the async properly. I had to subclass from django.utils.deprecation import MiddlewareMixin. I hope this can help someone else.