Django 通道在本地工作但不在服务器上工作，WebSocket 握手期间出错

Question

网站加载正常，但频道不工作。在控制台中，我得到：WebSocket 连接到 'ws://fortests.ovh/8' 失败：WebSocket 握手期间出错：意外响应代码：404

服务器：Ubuntu 16.04 on Digital Ocean nginx 版本：nginx/1.10.0 (Ubuntu) Redis 服务器 v=3.2.8

我的设置.py：

CHANNEL_LAYERS = {
    'default': {
        'BACKEND': 'asgi_redis.RedisChannelLayer',
        'CONFIG': {
            'hosts': [('localhost', 6379)],
        },
        'ROUTING': 'slist.routing.channel_routing',
    }
}

wsgi.py

import os

from django.core.wsgi import get_wsgi_application

os.environ.setdefault("DJANGO_SETTINGS_MODULE", "slist.settings")

application = get_wsgi_application()

消费者.py

import json
from channels import Group
from channels.auth import channel_session_user_from_http, channel_session_user

from .models import Item

# Connected to websocket.connect
@channel_session_user_from_http
def ws_add(message):
    # Accept the connection
    message.reply_channel.send({"accept": True})
    # Add to the users group
    Group("users").add(message.reply_channel)

路由.py

from channels.routing import route
from tobuy.consumers import ws_add, ws_receive, ws_disconnect

channel_routing = [
    route("websocket.connect", ws_add),
    route("websocket.receive", ws_receive),
    route("websocket.disconnect", ws_disconnect),
]

js

var socket = new WebSocket('ws://' + window.location.host + '/' + {{ active_list.id }});

nginx 设置

server {
    listen 80;
    server_name server_name fortests.ovh;

location = /favicon.ico { access_log off; log_not_found off; }
location /static/ {
    root /home/kuba1/slistproject/slistvenv/src;
}

location / {
    include proxy_params;
    proxy_pass http://unix:/home/kuba1/slistproject/slistvenv/src/slist.sock;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection "upgrade";

}
}

Answer 1

在 docker 设置中使用 daphne（通道 2）时，我也遇到了上述 404 错误。最终得到以下 nginx 配置：

map $http_upgrade $connection_upgrade {
    default upgrade;
    '' close;
}

upstream websocket {
        server daphne:8000;
}


server {
  listen 80 default_server;
  server_name  localhost;


  root   /var/www;
  location /static {
      index  index.html index.htm;
  }

  location / {
      root /var/www;
      try_files $uri $uri/index.html @daphne;

      expires max;
      access_log off;
  }

  location @daphne {
    proxy_pass http://websocket;
    proxy_http_version 1.1;
    proxy_set_header Upgrade $http_upgrade;
    proxy_set_header Connection $connection_upgrade;

  }

其中 daphne（第 5 行）是运行 daphne 进程的容器的名称。