Socket IO flutter not connecting-CodePudding

I am facing an issue connecting my socket io flutter client to my nodejs socket io server. I am aware of the compatibility issue between the node socket io package and the flutter socket io client package. Hence, I installed only compatible versions of dependencies on both ends.

i.e., for flutter

socket_io_client: ^1.0.2

and for server side.

{
   "socket.io": "^2.4.1",
}

I have also tried the latest dependencies but I am getting the same timeout message in my logs, Initially, I thought it was my server's issue, but I checked the connection using postman and it works.

Below I am adding my implementations for both server and client side,

const { socketGuard } = require('./middlewares/socketio.middleware');
let io;

module.exports = {

    init: (server) => {
        
        io = require("socket.io")(server, { cors: { origin: '*' } });

        io.use(async (socket, next) => {

            let result = await socketGuard(socket);

            if (result.isValid) {
                next();
            }
            else {
                next(new Error("Not authorized"));
            }

        });

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

            console.log(`${socket.id} : connected`);

        });

        return io;
    },

    get: () => {


        if (!io) {


            throw new Error("Socket io not initialized");

        }

        return io;

    }

};

and for flutter, I have added the following lines in the init function,

    io.Socket socket = io.io("http://192.168.1.14:5000");

    socket.onConnect((data) {log("Hello world");});

    socket.onConnectError((data) {log(data);});

    socket.onError((data) {log(data);});

    socket.on("message", (data) {log(data);});

CodePudding user response：

Try adding an options Map when you initialize your socket.

io.Socket socket = io.io("http://192.168.1.14:5000", <String, dynamic>{
    "transports": ["websocket"],
});

On one of my projects I can confirm that it doesn't work without this being passed in.