No route found for path 'call' in using webRTC - websocket

Question

I'm trying to make chat application by using websocket and I'm trying to connect to django-channels.
My consumers.py looks like this:
import json
from channels.generic.websocket import AsyncWebsocketConsumer
class VideoCallConsumer(AsyncWebsocketConsumer):
async def connect(self):
self.room_group_name = self.scope['url_route']['kwargs']['room_name']
await self.channel_layer.group_add(
self.room_group_name,
self.channel_name
)
await self.accept()
async def disconnect(self, code):
await self.channel_layer.group_discard(
self.room_group_name,
self.channel_name
)
async def receive(self, text_data):
receive_dict = json.loads(text_data)
action = receive_dict['action']
## 147
if action == 'new-offer' or action == 'new-answer':
receiver_channel_name = receive_dict['message']['receiver_channel_name']
receive_dict['message']['receiver_channel_name'] = self.channel_name
await self.channel_layer.send(
receiver_channel_name,
{
'type': 'send.sdp',
'receive_dict': receive_dict,
}
)
return
receive_dict['message']['receiver_channel_name'] = self.channel_name
await self.channel_layer.group_send(
self.room_group_name,
{
'type': 'send.sdp',
'receive_dict': receive_dict,
}
)
async def send_sdp(self, event):
receive_dict = event['receive_dict']
this_peer = receive_dict['peer']
action = receive_dict['action']
message = receive_dict['message']
await self.send(text_data=json.dumps({
'peer': this_peer,
'action': action,
'message': message,
}))
My routing.py
from django.urls import re_path
from . import consumers
websocket_urlpatterns = [
re_path(r'ws/call/<str:room_name>/', consumers.VideoCallConsumer.as_asgi()),
#re_path(r'', consumers.VideoCallConsumer.as_asgi()),
]
My project routing.py:
import os
import call.routing
from channels.auth import AuthMiddlewareStack
from channels.routing import ProtocolTypeRouter, URLRouter
from django.core.asgi import get_asgi_application
os.environ.setdefault('DJANGO_SETTINGS_MODULE', 'config.settings')
application = ProtocolTypeRouter({
"http": get_asgi_application(),
"websocket": AuthMiddlewareStack(
URLRouter(
call.routing.websocket_urlpatterns
)
),
})
I tried to name room_group_name with self.scope['url_route']['kwargs']['room_name'].
The problem is, I can't connect to the websocket, my django server says: Exception inside application: No route found for path 'call'.
WebSocket HANDSHAKING /call [127.0.0.1:52045]
Exception inside application: No route found for path 'call'.
Traceback (most recent call last):
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/channels/staticfiles.py", line 44, in __call__
return await self.application(scope, receive, send)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/channels/routing.py", line 71, in __call__
return await application(scope, receive, send)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/channels/sessions.py", line 47, in __call__
return await self.inner(dict(scope, cookies=cookies), receive, send)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/channels/sessions.py", line 263, in __call__
return await self.inner(wrapper.scope, receive, wrapper.send)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/channels/auth.py", line 185, in __call__
return await super().__call__(scope, receive, send)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/channels/middleware.py", line 26, in __call__
return await self.inner(scope, receive, send)
File "/Library/Frameworks/Python.framework/Versions/3.10/lib/python3.10/site-packages/channels/routing.py", line 168, in __call__
raise ValueError("No route found for path %r." % path)
ValueError: No route found for path 'call'.
WebSocket DISCONNECT /call [127.0.0.1:52045]
I want to know why this error raised
Also I have additional questions. I think send.sdp in consumers.py is a 'message' here, but what does it represent? And what is the structure of receive_dict in comsumers.py? receivedict['message']['receiverchannelname'] = self.channelname is in consumers.py and self.channel_name is not declared, but why is it working?