Python [Errno 98] Address Already in Use

Python [Errno 98] Address already in use

Yes, it is intended. Here you can read detailed explanation. It is possible to override this behavior by setting SO_REUSEADDR option on a socket. For example:

sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

OSError: [Errno 98] Address already in use

The best to explain it is to look at example from google. The app.run() should be only for local testing. The example has following comment:

if __name__ == '__main__':
    # This is used when running locally only. When deploying to Google App
    # Engine, a webserver process such as Gunicorn will serve the app. This
    # can be configured by adding an `entrypoint` to app.yaml.
    app.run(host='127.0.0.1', port=8080, debug=True)

So it's enough to add similar if statement before app.run(). I have replicated your code on my side and I got same error. After adding the if statement working fine on app engine.

Python OSError: [Errno 98] Address already in use but no port is used

This problem recreates on my side too. From debugging the Flask code, it looks like in debug mode there's no usage of SO_REUSEADDR, so the next attempt to bind with the same address (your tcp server) would fail. One option is to turn off the debug mode:

app.run(debug=False)

Another option is to turn off the reloader (the reloader is good if you're modifying your application while the server is running):

app.run(debug=True, use_reloader=False)

socket.error: [Errno 98] Address already in use

I think you are trying to run more than one Odoo server on the same port.

Try this on terminal:

 sudo netstat -nlp | grep 8069

then you will see something like this:

 tcp        0      0 0.0.0.0:8069            0.0.0.0:*               LISTEN      10869/python2    

Kill the process:

sudo kill -9 10869

OR

Change the port number in the fileServer.py.

Then try to start Odoo.

Hope it will help you.

How to fix '[Errno 98] Address already in use' in Python

SO_REUSEADDR doesn't let you bind two things to the same port at once. Its primary function is to bypass the waiting period after a socket shuts down. If you want to bind two things at once, you need to use something stronger: SO_REUSEPORT.

Flask make_server always raises OSError: [Errno 98] Address already in use

The problem was that the __init__ method is apparently called for every test, so it was failing at the second one every time.

The solution is to put the creation of the server and the Thread in the setUp method, and close them in the tearDown.

    def setUp(self):
        self.mock_server = make_server('localhost', 6000, mock_wfm)
        self.mock_server_thread = Thread(target = self.mock_server.serve_forever)
        self.mock_server_thread.start()
        time.sleep(1)

    def tearDown(self):
        self.mock_server.shutdown()
        self.mock_server_thread.join()

Edit:

The methods setupClass and teardownClass are apparently an even better solution as they are run once per class instead of once per test.

Python socket OSError: [Errno 98] Address already in use

You must use the following statement before using the bind() method

serversocket.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)

If you still have problems, you can look at your network connections and close the one you used previously manually, for when you run the program again, if you have already put the above-mentioned instruction before the bind() method everything should be fine.

---

Related Topics