add websocket broadcast layer for Starletter using Redis as a backend.
Most of the code inspired from django-channels
Running application locally: open two separate terminal to emulate clients sending messages
- The first termial (T-1) will connect to connect to the websocket endpoint and listen for any comming messsages from other client.
T-1#> docker-compose build
T-1#> docker-compose up -d
T-1#> docker-compose exec client_1 bash
T-1#> python
>>> import websocket
>>> ws = websocket.WebSocket()
>>> ws.connect("ws://server:8000")
>>> ws.recv()
- The second terminal (T-2) will connect to websocket endpoint and send a message.
T-2#> docker-compose exec client_2 bash
T-2#> python
>>> import websocket
>>> ws = websocket.WebSocket()
>>> ws.connect("ws://server:8000")
>>> import json
>>> ws.send(json.dumps({"try": "message sent from client_1"}))
- Any client listen in the websocket endpoint should receive the message
>>> ws.recv()
'{"try": "message sent from client_2"}'