Flask-SocketIO遇到sid和命名空間問題

Flask-SocketIO給我帶來一些麻煩。我想初始化用下面的代碼私人聊天室：Flask-SocketIO遇到sid和命名空間問題

@socketio.on('join', namespace='/join') 
def on_join(receiver_name): 
    username = session['username'] 
    join_room(receiver_name) # start a chat room with the receiver's username 
    send(username + ' is now connected.', room=receiver_name)

不幸的是，我收到錯誤，如AttributeError: 'Request' object has no attribute 'sid'。即使我特別指定request.sid，我也會收到錯誤消息。當我在join_room的sid字段中隨機插入某個內容時，出現命名空間錯誤。我已確保我進口一切必要的東西等。

這是特定的錯誤消息。

[2017-10-04 10:02:48,297] ERROR in app: Exception on /start_chat [POST] 
Traceback (most recent call last): 
    File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1982, in wsgi_app 
    response = self.full_dispatch_request() 
    File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1614, in full_dispatch_request 
    rv = self.handle_user_exception(e) 
    File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1517, in handle_user_exception 
    reraise(exc_type, exc_value, tb) 
    File "/usr/local/lib/python3.6/site-packages/flask/_compat.py", line 33, in reraise 
    raise value 
    File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1612, in full_dispatch_request 
    rv = self.dispatch_request() 
    File "/usr/local/lib/python3.6/site-packages/flask/app.py", line 1598, in dispatch_request 
    return self.view_functions[rule.endpoint](**req.view_args) 
    File "/Users/agaidis/Desktop/challenge-backend-master/challenge-eng-base-master/backend-python/app.py", line 132, in start_chat 
    on_join(friend_username) 
    File "/Users/agaidis/Desktop/challenge-backend-master/challenge-eng-base-master/backend-python/app.py", line 152, in on_join 
    join_room(receiver_name) # start a chat room with the receiver's username 
    File "/usr/local/lib/python3.6/site-packages/flask_socketio/__init__.py", line 756, in join_room 
    sid = sid or flask.request.sid 
    File "/usr/local/lib/python3.6/site-packages/werkzeug/local.py", line 347, in __getattr__ 
    return getattr(self._get_current_object(), name) 
AttributeError: 'Request' object has no attribute 'sid' 
127.0.0.1 - - [04/Oct/2017 10:02:48] "POST /start_chat HTTP/1.1" 500 -

來源

2017-10-04 agaidis

您正在通過HTTP路由自己調用on_join()函數。這不是應該如何工作的。當客戶端在該事件上調用emit()時，會調用Socket.IO事件。 request.sid變量只存在於Socket.IO事件處理程序的上下文中，該處理程序不會出現在HTTP處理程序中。

根據您的堆棧跟蹤，我認爲您需要將start_chat路由從HTTP更改爲Socket.IO。客戶端需要通過撥打emit()而不是發送HTTP請求來請求加入聊天。

來源

2017-10-05 04:38:29 Miguel

謝謝！我是Flask和Socket.IO的noob。爲了實例化多個房間，客戶端在客戶端代碼中打開新的套接字連接，對嗎？他們看到的網頁將是普通的HTML，其中的東西是特定於其開放套接字的？ – agaidis

您可以將單個客戶端連接與多個房間相關聯，無需創建多個連接。對同一個客戶端多次調用'join_room（）'完全可以。 – Miguel

太棒了！謝謝！！ – agaidis

Flask-SocketIO遇到sid和命名空間問題

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