Error of channels

[cn.luj...@gmail.com]

I had an error while build a chatroom useing django-channels:

I tried follow the official website: https://channels.readthedocs.io

but while i build a room to chat with many people, an error occered:

Exception inside application: Reader at end of file

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/channels/sessions.py", line 179, in __call__

    return await self.inner(receive, self.send)

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/channels/middleware.py", line 41, in coroutine_call

    await inner_instance(receive, send)

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/channels/consumer.py", line 59, in __call__

    [receive, self.channel_receive], self.dispatch

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/channels/utils.py", line 52, in await_many_dispatch

    await dispatch(result)

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/channels/consumer.py", line 73, in dispatch

    await handler(message)

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/channels/generic/websocket.py", line 196, in websocket_receive

    await self.receive(text_data=message["text"])

  File "/home/lujianxin/Files/PycharmProjects/demo/chat/consumers.py", line 44, in receive

    'message': message

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/channels_redis/core.py", line 611, in group_send

    key, min=0, max=int(time.time()) - self.group_expiry

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/aioredis/commands/sorted_set.py", line 268, in zremrangebyscore

    return self.execute(b'ZREMRANGEBYSCORE', key, min, max)

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/aioredis/commands/__init__.py", line 51, in execute

    return self._pool_or_conn.execute(command, *args, **kwargs)

  File "/home/lujianxin/VirtualEnvs/demo/lib/python3.7/site-packages/aioredis/connection.py", line 319, in execute

    raise ConnectionClosedError(msg)

  Reader at end of file

WebSocket DISCONNECT /ws/chat/ljx/ [192.168.2.126:41154]

if i just build a echo server for one connection, it works ok, but while i use channels and group_send, it worked ok when i send one or two message, all of memeber of the room received message, while i send more the problem raising, i promissed that i followed the lesson and my settings, environment is ok, but what caused this error?

[Andrew Godwin]

I've seen a lot of people have a similar error but I'm never sure what causes it - that said, I generally advise them to check their Redis logs to see if Redis is OK, as that could cause this?

Andrew

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