Python Django中的Websocket握手错误

Question

由于握手错误，websocket连接被关闭，我遇到了问题。错误消息如下：

WebSocket HANDSHAKING /ws/polData/ [127.0.0.1:59304]
Exception inside application: object.__init__() takes exactly one argument (the instance to initialize)
Traceback (most recent call last):
File "/usr/lib/python3.7/site-packages/channels/routing.py", line 71, in __call__
return await application(scope, receive, send)
File "/usr/lib/python3.7/site-packages/channels/sessions.py", line 47, in __call__
return await self.inner(dict(scope, cookies=cookies), receive, send)
File "/usr/lib/python3.7/site-packages/channels/sessions.py", line 172, in __call__
return await self.inner(self.scope, receive, self.send)
File "/usr/lib/python3.7/site-packages/channels/auth.py", line 181, in __call__
return await super().__call__(scope, receive, send)
File "/usr/lib/python3.7/site-packages/channels/middleware.py", line 26, in __call__
return await self.inner(scope, receive, send)
File "/usr/lib/python3.7/site-packages/channels/routing.py", line 160, in __call__
send,
File "/usr/local/lib/python3.7/dist-packages/asgiref/compatibility.py", line 33, in new_application
instance = application(scope)
File "/usr/lib/python3.7/site-packages/channels/generic/websocket.py", line 159, in __init__
super().__init__(*args, **kwargs)
TypeError: object.__init__() takes exactly one argument (the instance to initialize)
WebSocket DISCONNECT /ws/polData/ [127.0.0.1:59304]

Answer 1

在应用程序中检查您的路由

在websocket_urlpatterns下，在repath上，您可能错过了.as_asgi((

例如：-

websocket_urlpatterns = [
re_path(r'ws/chat/(?P<room_name>w+)/$', consumers.ChatConsumer.as_asgi()),
]

Answer 2

在routing.py中，"as_asgi(("是python 3.6以上版本所必需的。

以下是我如何解决问题并不断允许不同版本。

if float(platform.python_version()[0:3]) > 3.6:
cons = consumers.myConsumer.as_asgi()
else:
cons = consumers.myConsumer
websocket_urlpatterns = [
path("ws/example/", cons),
]

Answer 3

websocket_urlpatterns = [
path("ws/example/", cons.as_asgi()),
]