How to connect to socket.io using python

Question

I want to connect to Socket.IO server using python. Is there a way to do it?

I have tried websocket-client as suggested in this answer.

ws = create_connection("ws://example.com:1000/socket.io/")

That code throws this exception

websocket._exceptions.WebSocketConnectionClosedException: Connection is already closed.

I feel like I am missing parameters because the JS client connection URL looks like this:

ws://example.com:1000/socket.io/?EIO=3&transport=websocket&sid=CHARSANDNUMBERS

kluu · Accepted Answer · 2017-11-30 00:10:20Z

4

You just need to use the url from the JS client, possibly without the sid:

ws = create_connection("ws://example.com:1000/socket.io/?EIO=3&transport=websocket")

From my personal experience I didn't have that sid param, but just try to add it if it doesn't work without.

answered Nov 30, 2017 at 0:10

kluu

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1 Comment

bitinerant Over a year ago

"Socket.IO is NOT a WebSocket implementation. Although Socket.IO indeed uses WebSocket for transport when possible, it adds additional metadata to each packet. That is why a WebSocket client will not be able to successfully connect to a Socket.IO server, and a Socket.IO client will not be able to connect to a plain WebSocket server either." (source)

mbtamuli · Accepted Answer · 2016-02-05 20:20:27Z

1

You can look at this: socketIO-client

As an example,

from socketIO_client import SocketIO

socketIO = SocketIO('localhost', 8000)

answered Feb 5, 2016 at 20:20

mbtamuli

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