Use openvpn3 API via Python wrapper

[piotr1221]

Hello, my goal is to be able to connect to a VPN via an .ovpn file using the OpenVPN API itself. My use case is executing some Python code in a serverless cloud environment to connect to a database behind this VPN. Since the environment is serverless, I can't install the client and execute it via shell, so I was trying to sort of use the code behind the client.

I build the source code from https://github.com/OpenVPN/openvpn3 and found out there is a Python wrapper at core/build/client/ovpncli.py. I tried to copy a CLI example in C++ from this repo, but I can't get it to work.

[

from ovpncli import ClientAPI_OpenVPNClientHelper as OpenVPNClientHelper, ClientAPI_OpenVPNClient as OpenVPNClient, ClientAPI_Config as Config
import threading

class Client(OpenVPNClient):
    pass

def execute(client):
    status = client.connect()

    print(status.error)
    print(status.message)

    return status

helper = OpenVPNClientHelper()
merged_config = helper.merge_config('path_to_ovpn_file', True)

config = Config()
config.content = merged_config.profileContent

client = Client()
eval_config = client.eval_config(config)

thread = threading.Thread(target=execute, args=(client,))
thread.start()
thread.join()

When i execute it, I get the error

SWIG director method error. Error detected when calling 'ClientAPI_OpenVPNClient.event'

. Why does this happen? How can I fix it? Is there any other more straightforward way to achieve this? (Btw, I have almost zero knowledge on networking)

Thanks