聊天/consumers.py

Question

我正在按照本教程创建CHAT，以使用频道进行学习。这样，我将按照本教程进行操作：https://channels.readthedocs.io/en/latest/tutorial/part_2.html

我已经做了一切。当我应用命令时：

presto:tiny> select from_base(regexp_replace('0x100', '^0x'), 16);
 _col0
-------
   256

我明白了：

python manage.py migrate

期望的是：

Operations to perform:
  Apply all migrations: admin, auth, contenttypes, polls, sessions
Running migrations:
  No migrations to apply.

当我运行Channels Server Development（ASGI）时，我进入URL http://127.0.0.1:8000/chat/lobby/，但仍然在浏览器的Javascript控制台上看到消息错误：

Operations to perform:
  Apply all migrations: admin, auth, contenttypes, sessions
Running migrations:
  Applying contenttypes.0001_initial... OK
  Applying auth.0001_initial... OK
  Applying admin.0001_initial... OK
  Applying admin.0002_logentry_remove_auto_add... OK
  Applying contenttypes.0002_remove_content_type_name... OK
  Applying auth.0002_alter_permission_name_max_length... OK
  Applying auth.0003_alter_user_email_max_length... OK
  Applying auth.0004_alter_user_username_opts... OK
  Applying auth.0005_alter_user_last_login_null... OK
  Applying auth.0006_require_contenttypes_0002... OK
  Applying auth.0007_alter_validators_add_error_messages... OK
  Applying auth.0008_alter_user_username_max_length... OK
  Applying auth.0009_alter_user_last_name_max_length... OK
  Applying sessions.0001_initial... OK

我不知道为什么它不起作用。在我的项目的settings.py文件中：

WebSocket connection to 'ws://127.0.0.1:8000/ws/chat/lobby/' failed: Error during WebSocket handshake: net::ERR_CONNECTION_RESET

最后一件事：我无法安装Docker，因为我在Windows 10 HOME上。可能是问题吗？

谢谢，

编辑

我还阅读了其他有关 WebSocket DISCONNECT / ws / chat / Test / [127.0.0.1:36769] 的帖子。

我发现频道更新存在问题。就我而言，我已经使用以下命令安装了Channels：

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

然后，我使用以下命令进行了更新：

pip install -U channels

如何更新此更新以检查问题是否出在这里？

下面是我的 consumer.py 文件：

聊天/consumers.py

$ git clone git@github.com:django/channels.git
$ cd channels
$ <activate your project’s virtual environment>
(environment) $ pip install -e .  # the dot specifies the current repo

我的模板文件room.html：

from channels.generic.websocket import WebsocketConsumer
import json

class ChatConsumer(WebsocketConsumer):
    def connect(self):
        self.accept()

    def disconnect(self, close_code):
        pass

    def receive(self, text_data):
        text_data_json = json.loads(text_data)
        message = text_data_json['message']

        self.send(text_data=json.dumps({
            'message': message
        }))

根路由配置：

<!-- chat/templates/chat/room.html -->
<!DOCTYPE html>
<html>
<head>
    <meta charset="utf-8"/>
    <title>Chat Room</title>
</head>
<body>
    <textarea id="chat-log" cols="100" rows="20"></textarea><br/>
    <input id="chat-message-input" type="text" size="100"/><br/>
    <input id="chat-message-submit" type="button" value="Send"/>
</body>
<script>
    var roomName = {{ room_name_json }};

    var chatSocket = new WebSocket(
        'ws://' + window.location.host +
        '/ws/chat/' + roomName + '/');

    chatSocket.onmessage = function(e) {
        var data = JSON.parse(e.data);
        var message = data['message'];
        document.querySelector('#chat-log').value += (message + '\n');
    };

    chatSocket.onclose = function(e) {
        console.error('Chat socket closed unexpectedly');
    };

    document.querySelector('#chat-message-input').focus();
    document.querySelector('#chat-message-input').onkeyup = function(e) {
        if (e.keyCode === 13) {  // enter, return
            document.querySelector('#chat-message-submit').click();
        }
    };

    document.querySelector('#chat-message-submit').onclick = function(e) {
        var messageInputDom = document.querySelector('#chat-message-input');
        var message = messageInputDom.value;
        chatSocket.send(JSON.stringify({
            'message': message
        }));

        messageInputDom.value = '';
    };
</script>
</html>

还有我的routing.py文件：

# mysite/routing.py
from channels.auth import AuthMiddlewareStack
from channels.routing import ProtocolTypeRouter, URLRouter
import chat.routing

application = ProtocolTypeRouter({
        # (http->django views is added by default)
        'websocket': AuthMiddlewareStack(
        URLRouter(
        chat.routing.websocket_urlpatterns
        )
        ),
    })

渠道服务器开发无法迁移

聊天/consumers.py

0 个答案: