Several handlers for a single event about socketioxide

[Totodore]

No, it is not planned. The official js implementation doesn't support that either.
However middlewares will be supported with #270

[PhiSyX]

Ok, thanks for the answer. :)

But the official JS implementation supports this feature. I've used it several times in JS. That's why I came to ask here.

https://socket.io/docs/v4/server-api/#serveroneventname-listener

server.on(eventName, listener)
...
Adds the listener function to the end of the listeners array for the event named eventName.

It works in JS on both the server and client sides:

io.on("connection", (socket) => {
  socket.on("chat message", (msg) => {
    console.log(`Hello: ${msg}`);
  });

  socket.on("chat message", (msg) => {
    console.log(`World: ${msg}`);
  });
});