Multiple listeners for the same event

[okovpashko]

I'm writing my first app with flask-socketio and need to handle the connect event in multiple parts of my app. For example? register all users' connections and add a connection to the rooms.
When I have multiple @socketio.on('connect') decorators for multiple functions only the last one is called when a new connection is opened.
Is this an expected behavior? Are there any reasons for not supporting multiple event listeners?

[miguelgrinberg]

This is expected, multiple event handlers for an event are not supported.

[okovpashko]

Thank you for your answer.
Is there a particular reason for not supporting multiple listeners? It is very convenient to perform different actions in different parts of a program when a new client is connected. In my case, it's tracking the users' connections for security reasons in one module and adding connections to the required rooms in another.

[miguelgrinberg]

No particular reason. Many Python packages implement event handling in this same style (Flask, etc.)

The few users I've heard of that needed this addressed the issue by implementing the observer pattern in their own applications.