Why socket.io returns "Bad handshake method"?

Question

Good evening, i'm struggling with a socket connection. I use socket.io in the nodejs-express backend and ngx-socket-io in the angular frontend, but at the connection i continuosly receive 400 stat ({"code":2,"message":"Bad handshake method"}) alternate with 200 stat width sid: 0{"sid":"REeYoGC5t_JnTp4dAABp","upgrades":"websocket"],"pingInterval":25000,"pingTimeout":5000}).

[Here there is a screenshot of chrome's net tab][1]

Here it is the server

const app = express();
const server = http.createServer(app);

server.listen(PORT, () => {
    console.log("Server is listening on " + PORT, colors.yellow);
    init();
});

const io = require("socket.io")(server, {
   cors: {
        origin: ["http://localhost:4200", "https://myurl.com",],
        credentials: true
    }
});

io.on("connection", (socket) => {

    console.log("Connected");

    socket.emit("ok","ok");
    socket.on("disconnect", (data) => {

    });
});

And here there is the client

const config: SocketIoConfig = { 
    url: environment.SERVER_ENDPOINT, 
    options: { autoConnect: false, withCredentials: true}  
};

...
imports: [
    SocketIoModule.forRoot(config)
]
...

Can someone help me with this? [1]: https://i.sstatic.net/72YSB.png

EDIT I've resolved this using socket.io-client instead of ngx-socket-io

Answer 1

Try to downgrade version , it was fine with socket.io 2.3.1