Channel: Migrate regular Django project to Channels2

[Zhiyu (Drew) Li]

Hi there,

I am trying to migrate an existing Django project to Channels2. We want to keep all existing sync codes unchanged and we will continue mode of the development in sync mode. But having Channels opens the opportunity to develop some features in async mode.

I was able to install channels2 and get it configured. The portal still runs and all tests passed. But does it mean the migration is successful? How can I know if the tests were actually run in the channels2 env?

Anything particular I need to double check? like a migration checklist

Thanks

Drew

[Andrew Godwin]

Channels doesn't take over at all unless you configure an async consumer. To make sure it's working I'd recommend writing a single async consumer, and running a test against that to ensure it works.

Andrew

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[Zhiyu/Drew Li]

Thanks. 

I added a async http consumer from the doc. It kept throwing error on  "Header name 'Content-Type' expected to be `bytes`, but got `<class 'str'>`".

I was able to get it running after changing  to (b"Content-Type", b"text/plain"),

from channels.generic.http import AsyncHttpConsumer

class BasicHttpConsumer(AsyncHttpConsumer):
    async def handle(self, body):
        await asyncio.sleep(10)
        await self.send_response(200, b"Your response bytes", headers=[
            (b"Content-Type", b"text/plain"),
        ])