Question

我有一个来自docker化渠道的简单聊天应用示例，但是当我打开2个聊天时遇到问题。

如果我打开第一个窗口并发送一条消息，那么消费者会捕获我的消息并回复组中的所有频道（此刻仅我）

Normal test

然后，如果我打开另一个窗口并发送一条消息，则我在同一窗口（同一套接字）中收到两条消息，而在第一次窗口聊天中没有收到其他消息

New window and two messages

但是我可以从旧窗口发送消息，我只是要在新窗口中看到此消息。

No messages from user2

But i send messages, i cant see it and user2 can see it

我的消费者

# chat/consumers.py
import json
from channels.generic.websocket import AsyncWebsocketConsumer

class ChatConsumer(AsyncWebsocketConsumer):
    async def connect(self):
        self.room_name = self.scope['url_route']['kwargs']['room_name']
        self.room_group_name = 'chat_%s' % self.room_name

        # Join room group
        await self.channel_layer.group_add(
            self.room_group_name,
            self.channel_name
        )

        await self.accept()

    async def disconnect(self, close_code):
        # Leave room group
        await self.channel_layer.group_discard(
            self.room_group_name,
            self.channel_name
        )

    # Receive message from WebSocket
    async def receive(self, text_data):
        text_data_json = json.loads(text_data)
        message = text_data_json['message']
        username = text_data_json['username']

        # Send message to room group
        await self.channel_layer.group_send(
            self.room_group_name,
            {
                'type': 'chat_message',
                'message': message,
                'username': username
            }
        )

    # Receive message from room group
    async def chat_message(self, event):
        message = event['message']
        username = event['username']

        # Send message to WebSocket
        await self.send(text_data=json.dumps({
            'message': message,
            'username': username
        }))

docker-compose.yml

version: '3.1'
services:

  chat:
    build:
      context: .
      dockerfile: Dockerfile
    volumes:
      - .:/var/chat-core:z
    depends_on:
      - redis
    ports:
      - 8000:8000

  redis:
     image: redis:6.0.6
     restart: always
     ports:
       - 6379:6379

Dockerfile

FROM python:3

RUN apt update & apt upgrade

RUN python3 -m pip install --upgrade pip

RUN python3 -m pip install Django

RUN python3 -m pip install -U channels

RUN python3 -m pip install channels_redis

WORKDIR /var/chet-core

EXPOSE 8000

CMD ["python", "manage.py", "runserver", "0.0.0.0:8000"]

我的settings.py

"""
Django settings for mysite project.

Generated by 'django-admin startproject' using Django 3.1.2.

For more information on this file, see
https://docs.djangoproject.com/en/3.1/topics/settings/

For the full list of settings and their values, see
https://docs.djangoproject.com/en/3.1/ref/settings/
"""
import os

from pathlib import Path


# Build paths inside the project like this: BASE_DIR / 'subdir'.
BASE_DIR = Path(__file__).resolve().parent.parent


# Quick-start development settings - unsuitable for production
# See https://docs.djangoproject.com/en/3.1/howto/deployment/checklist/

# SECURITY WARNING: keep the secret key used in production secret!
SECRET_KEY = '!)age)0rdjubmxu(v(gr-_bv$j4*n2#d^(b4r0$%n@aka+(b$g'

# SECURITY WARNING: don't run with debug turned on in production!
DEBUG = True

ALLOWED_HOSTS = []


# Application definition

INSTALLED_APPS = [
    'channels',
    'chat',
    'django.contrib.admin',
    'django.contrib.auth',
    'django.contrib.contenttypes',
    'django.contrib.sessions',
    'django.contrib.messages',
    'django.contrib.staticfiles',
]

MIDDLEWARE = [
    'django.middleware.security.SecurityMiddleware',
    'django.contrib.sessions.middleware.SessionMiddleware',
    'django.middleware.common.CommonMiddleware',
    'django.middleware.csrf.CsrfViewMiddleware',
    'django.contrib.auth.middleware.AuthenticationMiddleware',
    'django.contrib.messages.middleware.MessageMiddleware',
    'django.middleware.clickjacking.XFrameOptionsMiddleware',
]

ROOT_URLCONF = 'mysite.urls'

TEMPLATES = [
    {
        'BACKEND': 'django.template.backends.django.DjangoTemplates',
        'DIRS': [],
        'APP_DIRS': True,
        'OPTIONS': {
            'context_processors': [
                'django.template.context_processors.debug',
                'django.template.context_processors.request',
                'django.contrib.auth.context_processors.auth',
                'django.contrib.messages.context_processors.messages',
            ],
        },
    },
]

# Channels
ASGI_APPLICATION = 'mysite.routing.application'
CHANNEL_LAYERS = {
    'default': {
        'BACKEND': 'channels_redis.core.RedisChannelLayer',
        'CONFIG': {
            "hosts": [('localhost', 6379)],
        },
    },
}

WSGI_APPLICATION = 'mysite.wsgi.application'


# Database
# https://docs.djangoproject.com/en/3.1/ref/settings/#databases

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': BASE_DIR / 'db.sqlite3',
        'TEST': {
            'NAME': os.path.join(BASE_DIR, 'db_test.sqlite3')
        }
    }
}


# Password validation
# https://docs.djangoproject.com/en/3.1/ref/settings/#auth-password-validators

AUTH_PASSWORD_VALIDATORS = [
    {
        'NAME': 'django.contrib.auth.password_validation.UserAttributeSimilarityValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.MinimumLengthValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.CommonPasswordValidator',
    },
    {
        'NAME': 'django.contrib.auth.password_validation.NumericPasswordValidator',
    },
]


# Internationalization
# https://docs.djangoproject.com/en/3.1/topics/i18n/

LANGUAGE_CODE = 'en-us'

TIME_ZONE = 'UTC'

USE_I18N = True

USE_L10N = True

USE_TZ = True


# Static files (CSS, JavaScript, Images)
# https://docs.djangoproject.com/en/3.1/howto/static-files/

STATIC_URL = '/static/'

收到消息的Django频道错误

0 个答案: