Show HN: Manage web sockets from AWS Lambda using Fanout

https://github.com/fanout/python-faas-grip

by jkarneges • 9 years ago

56 7 9 years ago

jkarneges3• 9 years ago

The chat example is running at ws://58d6587c.fanoutcdn.com/prod/chat if anyone wants to try it.

E.g. with wscat:

  wscat -c ws://58d6587c.fanoutcdn.com/prod/chat
  > hello
    < anonymous: hello

The backend is here: https://9h8j7cy642.execute-api.us-west-1.amazonaws.com/prod/...

You can try a direct request to see the backend's response:

  curl -i -H "Accept: application/websocket-events" -H "Content-Type: application/websocket-events" -d 'OPEN'$'\r'$'\n' https://9h8j7cy642.execute-api.us-west-1.amazonaws.com/prod/chat

ivan_ah• 9 years ago

Nice. The Websockets events as HTTP request response is similar to the architecture of Django Channels.

jkarneges3• 9 years ago

Yup, splitting the session into a series of requests is a good way for Django Channels to rig things up, especially since Django itself doesn't support async yet.

We even have a library that works similarly: https://github.com/fanout/django-grip

(goals are different though. maybe someday we'll see ASGI Django apps using GRIP at the same time :))

je42• 9 years ago

we just went for aiohttp. django channels didn't scale on even very simple benchmarks. while aiohttp didn't even sweat.

that said, making everything async in the python sync world was some effort. ;)

candiodari• 9 years ago

Interesting approach. We could really use a reverse-proxy-for-websockets thing.

gtsteve• 9 years ago

I hadn't heard of Fanout before. I can't find any info about its global infrastructure - what regions does it serve?

It might be helpful in the new year. I'm developing a module for my app which uses websockets but I'm concerned about the performance for our clients in areas not served by AWS such as the UAE.

jkarneges3• 9 years ago

We have servers in SF, London, and Singapore. http://status.fanout.io

Show HN: Manage web sockets from AWS Lambda using Fanout

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