OSError: [Errno 98] Address already in use

[T00rk]

I tried to make it run on Ubuntu 20.04.2 but it doesn't seem to work.

I got the following error OSError: [Errno 98] Address already in use.

Nothing is running on this address.

flask run

* Environment: production
   WARNING: This is a development server. Do not use it in a production deployment.
   Use a production WSGI server instead.
 * Debug mode: off
 * Running on http://127.0.0.1:5000/ (Press CTRL+C to quit)
127.0.0.1 - - [15/May/2021 00:53:06] "GET / HTTP/1.1" 404 -
127.0.0.1 - - [15/May/2021 00:54:10] "OPTIONS /privacyAPI/v1/ HTTP/1.1" 200 -
usrjson['usrchoice'] =  top_choice
client_secret.json-gmail-v1-(['https://www.googleapis.com/auth/gmail.modify'],)
[2021-05-15 00:54:10,088] ERROR in app: Exception on /privacyAPI/v1/ [POST]
Traceback (most recent call last):
  File "/home/t0_0rk/Projets/privacybot/PB_venv/lib/python3.8/site-packages/flask/app.py", line 2447, in wsgi_app
    response = self.full_dispatch_request()
  File "/home/t0_0rk/Projets/privacybot/PB_venv/lib/python3.8/site-packages/flask/app.py", line 1952, in full_dispatch_request
    rv = self.handle_user_exception(e)
  File "/home/t0_0rk/Projets/privacybot/PB_venv/lib/python3.8/site-packages/flask_cors/extension.py", line 165, in wrapped_function
    return cors_after_request(app.make_response(f(*args, **kwargs)))
  File "/home/t0_0rk/Projets/privacybot/PB_venv/lib/python3.8/site-packages/flask/app.py", line 1821, in handle_user_exception
    reraise(exc_type, exc_value, tb)
  File "/home/t0_0rk/Projets/privacybot/PB_venv/lib/python3.8/site-packages/flask/_compat.py", line 39, in reraise
    raise value
  File "/home/t0_0rk/Projets/privacybot/PB_venv/lib/python3.8/site-packages/flask/app.py", line 1950, in full_dispatch_request
    rv = self.dispatch_request()
  File "/home/t0_0rk/Projets/privacybot/PB_venv/lib/python3.8/site-packages/flask/app.py", line 1936, in dispatch_request
    return self.view_functions[rule.endpoint](**req.view_args)
  File "/home/t0_0rk/Projets/privacybot/app/app.py", line 32, in executePrivacyAPI
    "return": privacyAPI(usrjson, services)
  File "/home/t0_0rk/Projets/privacybot/app/corefunctions.py", line 259, in privacyAPI
    sendEmail(usrjson, service_map)
  File "/home/t0_0rk/Projets/privacybot/app/corefunctions.py", line 73, in sendEmail
    gmail_service = Create_Service(CLIENT_SECRET_FILE, API_NAME, API_VERSION, SCOPES)
  File "/home/t0_0rk/Projets/privacybot/app/Google.py", line 32, in Create_Service
    cred = flow.run_local_server()
  File "/home/t0_0rk/Projets/privacybot/PB_venv/lib/python3.8/site-packages/google_auth_oauthlib/flow.py", line 460, in run_local_server
    local_server = wsgiref.simple_server.make_server(
  File "/usr/lib/python3.8/wsgiref/simple_server.py", line 154, in make_server
    server = server_class((host, port), handler_class)
  File "/usr/lib/python3.8/socketserver.py", line 452, in __init__
    self.server_bind()
  File "/usr/lib/python3.8/wsgiref/simple_server.py", line 50, in server_bind
    HTTPServer.server_bind(self)
  File "/usr/lib/python3.8/http/server.py", line 138, in server_bind
    socketserver.TCPServer.server_bind(self)
  File "/usr/lib/python3.8/socketserver.py", line 466, in server_bind
    self.socket.bind(self.server_address)
OSError: [Errno 98] Address already in use
127.0.0.1 - - [15/May/2021 00:54:10] "POST /privacyAPI/v1/ HTTP/1.1" 500 -

[nhevia]

Usually you can change flask port with flash run --port=<number> but XHR in the frontend app is hardcoded to port 5000.

privacybot/app/PB_UI/src/pages/InputForm.js

Line 47 in bc7063c

axios.post('http://localhost:5000/privacyAPI/v1/', this.state)

A workaround is to check if you have anything on that port lsof -i and kill the PID if needed.

[T00rk]

It seems to have worked but I was never asked to allow access to gmail or something ...
So when I check my sent mails in Gmail, of course there is nothing ...

[j94c]

@nhevia provided the right answer here and also exposed our bad code with the hard coding thing lol - but in fairness Flask running local should default to port 5000. I have seen this specific error before and as @nhevia mentioned killing anything on PID before running and this worked when I ran across this - usually with a random tab / old project in VScode was the culprit/