CODEWITHSUNDEEP
pythongunicorngevent
daisy
daisy

Reputation: 23489

gunicorn can't run with more than one worker

I have a simple websocket application, e.g main.py

When I try to launch it with one worker,

gunicorn -w 1 -k "geventwebsocket.gunicorn.workers.GeventWebSocketWorker" main:EchoApplication

There's no problem.

If I increase the w parameter to more than 1, e.g -w 20, the childs start to crash, 

error: [Errno 48] Address already in use: ('127.0.0.1', 8100)

Any ideas? Attached source code

from geventwebsocket import WebSocketServer, WebSocketApplication, Resource
import time

class EchoApplication(WebSocketApplication):
    def on_open(self):
        print "Connection opened"

    def on_message(self, message):
        self.ws.send('Let me take a sleep')
        time.sleep(10)
        self.ws.send(message)

    def on_close(self, reason):
        print reason

WebSocketServer(
    ('127.0.0.1', 8100),
    Resource({'/': EchoApplication})
).serve_forever()

Upvotes: 0

Views: 749

Answers (1)

Marc Llopart
Marc Llopart

Reputation: 21

You can't use the same Port. we had this issue and took some time to figure it out.

WebSocket is tied to a port and each gunicorn will try to create the WS in that same port.

Upvotes: 2

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