StreamingHttpResponse

A sample of a django app sending a StreamingHttpResponse and handling that stream in JS

We don't need really db or models in this example so the code is under apps/stream/views and apps/stream/templates/stream/index.html

How to use it

• run pip install django or poetry install
• run git clone git@github.com:edilio/StreamingHttpResponse.git
• run python manage.py runserver
• browse http://localhost:8000

You can look for 'start new chunk:' so you can see that data comes in several chunks

Here is the view code.

We are using an iterator, so you can replace it with your own long processing iterator

from django.http.response import StreamingHttpResponse
from django.shortcuts import render


def gen_message(msg):
    return 'data: {}'.format(msg)


def iterator():
    for i in range(100000):
        yield gen_message('iteration ' + str(i))


def test_stream(request):
    stream = iterator()
    response = StreamingHttpResponse(stream, status=200, content_type='text/event-stream')
    response['Cache-Control'] = 'no-cache'
    return response


def home(request):
    return render(request, 'stream/index.html')