Enable SO_REUSEADDR (OSError: [Errno xx] Address already in use)

[azbub]

I am subscribing to a wss feed and often times there is a disconnection from the server.

I want to automatically reconnect to the server so I added the following to my disconnect event :

        @socketio_client.on('disconnect', namespace='/streaming')
        def on_disconnect():
            print('Server disconnected.')
            socketio_client.disconnect()
            os.system(f'python3 __scriptfile__py &')
            exit()

however when this event is triggered, I get this message : OSError: [Errno 98] Address already in use

I though I would either enable reuseaddr or kill the connection and start a new one, how does one proceed ?

[miguelgrinberg]

Do you have a server in this process? Because this error message comes up for servers, not for clients. At least I have never seen it in the context of a client.

[azbub]

No, I subscribe to a websocket feed that's running on a server I do not control.

I only run a client side.

My goal is to reconnect to the feed when the server disconnects.

My code :

        @socketio_client.on('disconnect', namespace='/streaming')
        def on_disconnect():
            print('Server disconnected.')
            socketio_client.disconnect()
            print('called the disconnect command')       
            os.system(f'python3 file.py &')
            exit()

[miguelgrinberg]

Do you have the complete stack trace of the error please?

[azbub]

running script on mac :

Traceback (most recent call last):
  File "script.py", line 121, in <module>
    server = SimpleSSLWebSocketServer('127.0.0.1', 7777, Server, './c.pem', './k.pem', ssl.PROTOCOL_TLSv1_2)
  File "/opt/homebrew/lib/python3.9/site-packages/SimpleWebSocketServer/SimpleWebSocketServer.py", line 704, in __init__
    SimpleWebSocketServer.__init__(self, host, port,
  File "/opt/homebrew/lib/python3.9/site-packages/SimpleWebSocketServer/SimpleWebSocketServer.py", line 602, in __init__
    self.serversocket.bind(hostInfo[0][4])
OSError: [Errno 48] Address already in use

running script on ubuntu :

Traceback (most recent call last):
  File "script.py", line 121, in <module>
    server = SimpleSSLWebSocketServer('127.0.0.1', 7777, Server, './c.pem', './k.pem', ssl.PROTOCOL_TLSv1_2)
  File "/usr/local/lib/python3.8/dist-packages/SimpleWebSocketServer/SimpleWebSocketServer.py", line 704, in __init__
    SimpleWebSocketServer.__init__(self, host, port,
  File "/usr/local/lib/python3.8/dist-packages/SimpleWebSocketServer/SimpleWebSocketServer.py", line 602, in __init__
    self.serversocket.bind(hostInfo[0][4])
OSError: [Errno 98] Address already in use

[miguelgrinberg]

Do you see it? You do have a server. It has nothing to do with this package.

[azbub]

Oh yes, I do see it indeed, my apologies.

at the end of the script file, I have this :

server = SimpleSSLWebSocketServer('127.0.0.1', 7777, Server, './c.pem', './k.pem', ssl.PROTOCOL_TLSv1_2)
server.serveforever()
print("Server listening...")