Can't connect on server

[guarany-liv]

I have a strapi 4.15.0 and installed the plugin. Set the plugins.ts to

io: {
    enabled: true,
    config: {
      socket: {
        serverOptions: {
          cors: {
            origin: "*",
            methods: ["GET", "POST"]
          }
        }
      },
      contentTypes: [],
      events: [
        {
          name: "connection",
          handler({ strapi, io }, socket) {
            // will log whenever a socket connects
            strapi.log.info(
              `[io] new connection with id ${socket.id as number}`
            );
          }
        }
      ]
    }
  }

And I have a client for testing that is the same of the example on documentation. But I simply can't connect.
The configuration seems to be ok

But I all get is:
trying to connect http://localhost:4000
connect_error due to xhr poll error
connect_error due to xhr poll error
trying to connect http://localhost:4000
connect_error due to websocket error
connect_error due to websocket error

[guarany-liv]

I tried adding socketio to the bootstrap function without the plugin to see what happens, but the connection error also occurred.

 bootstrap({ strapi }) {
    const io = new Server((strapi as LoadedStrapi).server.httpServer, {
      cors: {
        origin: "*",
        methods: ["GET", "POST"]
      }
    });

    io.on("connection", (socket) => {
      console.log("User connected");
    }
}

[ComfortablyCoding]

Versions 4.15.0 and 4.15.1 are deprecated version due to them having various issues. I would upgrade to the latest version (v4.15.5 ) and see if the issue still occurs.

[guarany-liv]

Hi! I tried updating the version but that didn't solve it, the problem kept happening. I also tried to create a new project from strapi 0 and the installation didn't work. I'll leave the link with some videos showing my tests.
I have 1 strapi project built which is on version 4.15.0. I tested it with a new strapi project in version 4.15.5 and it didn't work either. The example that worked was a socketio project with express to validate if the problem was the client.

https://drive.google.com/file/d/1AKCMV50tteT9r6U4T1HxMOfm5PpApjKR/view?usp=sharing

[ComfortablyCoding]

Strange, any chance you have your project in a public repo somewhere? If not is it possible to provide a minimal reproducible example?

[mr-mern]

[ComfortablyCoding]

"not working" is a fairly broad term, what exactly is not working? The connection? The events? Etc etc