The client is using an unsupported version of the Socket.IO or Engine.IO protocols Error

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The client is using an unsupported version of the Socket.IO or Engine.IO protocols Error

  1. How to solve The client is using an unsupported version of the Socket.IO or Engine.IO protocols Error

    There appears to be some backward compatibility issues with SocketIO. You can uninstall python-engineio, python-socketio (and Flask-SocketIO just to be on the safe side) and reinstall lower versions.
    The combination that worked for me was:
    Flask-SocketIO==4.3.1 python-engineio==3.13.2 python-socketio==4.6.0

  2. The client is using an unsupported version of the Socket.IO or Engine.IO protocols Error

    There appears to be some backward compatibility issues with SocketIO. You can uninstall python-engineio, python-socketio (and Flask-SocketIO just to be on the safe side) and reinstall lower versions.
    The combination that worked for me was:
    Flask-SocketIO==4.3.1 python-engineio==3.13.2 python-socketio==4.6.0

Solution 1

There appears to be some backward compatibility issues with SocketIO. You can uninstall python-engineio, python-socketio (and Flask-SocketIO just to be on the safe side) and reinstall lower versions.

The combination that worked for me was:

Flask-SocketIO==4.3.1
python-engineio==3.13.2
python-socketio==4.6.0

Original Author Joel Oduro-Afriyie Of This Content

Solution 2

To fix the version incompatibility, you can run below “upgrade”commands:

pip install --upgrade python-socketio==4.6.0

pip install --upgrade python-engineio==3.13.2

pip install --upgrade Flask-SocketIO==4.3.1

Original Author Ravi Pullagurla Of This Content

Solution 3

flask-socketio-5.1.2
python-engineio-4.3.2
python-socketio-5.6.0

script src=”//cdnjs.cloudflare.com/ajax/libs/socket.io/4.5.0/socket.io.js”>

This worked for me. This error is due to dependency related to python-engineio .
After this, check your socket request shows EIO4 like this
“GET /socket.io/?EIO=4&transport=websocket&sid=mJ1g8wm0didssJSiAAAA HTTP/1.1” 200

Original Author Neelam Jhuria Of This Content

Solution 4

My fix was to use the socket.io version, not cloudflare as the source

Original Author Ryder R Of This Content

Conclusion

So This is all About This Tutorial. Hope This Tutorial Helped You. Thank You.

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I am an Information Technology Engineer. I have Completed my MCA And I have 4 Year Plus Experience, I am a web developer with knowledge of multiple back-end platforms Like PHP, Node.js, Python and frontend JavaScript frameworks Like Angular, React, and Vue.

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