当我使用WebSocket向组发送消息时，单个用户接收所有消息实例

Question

当一些用户向某个组发送消息时，只有一个（最后连接的）用户收到所有消息实例，而其他用户则什么也没有收到

A向具有用户A、B、C的组发送消息：

• C获取3个消息实例

• A一无所获

• B什么也得不到

我怎样才能解决这个问题

#consumers.py
class ChatConsumer(WebsocketConsumer):
    def connect(self):
        room_id = int(self.scope['url_route']['kwargs']['room_id'])
        room = get_room(room_id)
        self.chat = get_chat(room)

        chat_name = str(self.chat.id)
        self.chat_group_name = 'chat_%s' % chat_name

        self.user = self.scope['user']
        if room_id == 19 or is_user_in_room(self.user, room):
            # Join room group
            async_to_sync(self.channel_layer.group_add)(
                self.chat_group_name,
                self.channel_name
            )
            self.accept()
        else:
            self.close()

    def disconnect(self, close_code):
        # Leave room group
        async_to_sync(self.channel_layer.group_discard)(
            self.chat_group_name,
            self.channel_name
        )

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

        async_to_sync(self.channel_layer.group_send)(
            self.chat_group_name,
            {
                'type': 'chat.message',
                'message': message
            }
        )

    # Receive message from room group
    def chat_message(self, event):
        message = event['message']
        print(self.user, self.channel_name)
        # prints different users, different channel names

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

var ws = new WebSocket("ws://localhost:8000/ws/room_chat/19/");
ws.send(JSON.stringify({
      message: this.state.struct
    }));