Rasa Webchat Widget using Ngrok only works when vpn is on

Rasa Open Source
1

I am in : Iran

Rasa Version : 3.0.4

Minimum Compatible Version: 3.0.0

Rasa SDK Version : 3.0.2

Rasa X Version : None

Python Version : 3.8.12

Operating System : Windows-10-10.0.19041-SP0

I have setup rasa and trained a simple model ( I am using conda as virtual env ). I start rasa with this command :

rasa run -m models --enable-api --cors "*"

I used ngrok to make it available for all users.

ngrok http 5005

then I prepared chatbot widget in my webpage. But it is weird, I just can send messages to rasa when VPN is on ( I use cyber ghost in Chrome).

and when VPN is on Rasa answers me but show some errors in terminal as log :

Traceback (most recent call last): File “c:\users\hamseda\anaconda3\envs\drcup\lib\site-packages\sanic\server\protocols\websocket_protocol.py”, line 119, in websocket_handshake subprotocols = list(subprotocols) File “c:\users\hamseda\anaconda3\envs\drcup\lib\typing.py”, line 261, in inner return func(*args, **kwds) File “c:\users\hamseda\anaconda3\envs\drcup\lib\typing.py”, line 685, in getitem params = tuple(_type_check(p, msg) for p in params) File “c:\users\hamseda\anaconda3\envs\drcup\lib\typing.py”, line 685, in params = tuple(_type_check(p, msg) for p in params) File “c:\users\hamseda\anaconda3\envs\drcup\lib\typing.py”, line 149, in _type_check raise TypeError(f"{msg} Got {arg!r:.100}.") TypeError: Parameters to generic types must be types. Got 0.

During handling of the above exception, another exception occurred:

Traceback (most recent call last): File “handle_request”, line 83, in handle_request class Sanic(BaseSanic, metaclass=TouchUpMeta): File “c:\users\hamseda\anaconda3\envs\drcup\lib\site-packages\engineio\asyncio_server.py”, line 271, in handle_request packets = await socket.handle_get_request(environ) File “c:\users\hamseda\anaconda3\envs\drcup\lib\site-packages\engineio\asyncio_socket.py”, line 89, in handle_get_request return await getattr(self, ‘upgrade’ + transport)(environ) File “c:\users\hamseda\anaconda3\envs\drcup\lib\site-packages\engineio\asyncio_socket.py”, line 142, in _upgrade_websocket return await ws(environ) File “c:\users\hamseda\anaconda3\envs\drcup\lib\site-packages\engineio\async_drivers\sanic.py”, line 122, in call self._sock = await protocol.websocket_handshake(request) File “c:\users\hamseda\anaconda3\envs\drcup\lib\site-packages\sanic\server\protocols\websocket_protocol.py”, line 132, in websocket_handshake raise ServerError(msg, status_code=500) sanic.exceptions.ServerError: Failed to open a WebSocket connection. See server log for more information.

when VPN is off I get this error in inspect element console tab of webpage many times:

GET https://edbc-188-75-103-184.ngrok.io/socket.io/?EIO=4&transport=polling&t=N_lmn4M net::ERR_TIMED_OUT rasa-chat:2

and next error some times.

Failed to load resource: net::ERR_TIMED_OUT
2

It’s expected that you have to use a VPN. You need to enable split tunneling in your VPN to allow ngrok traffic to bypass the VPN. My office network uses Pulse Secure to connect to the VPN. I am tunneling my Python script with ngrok. When the VPN is disabled, ngrok successfully excavates my server, but the Python script needs to access the website through the VPN. When I enable the VPN, ngrok stops working. I solved this when I started using the VPN from https://www.namecheap.com/vpn/what-is-a-vpn/. Try changing your widget settings.

3

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