index.js

const app = require('express')();
const server = require('http').createServer(app);
const cors = require('cors');

const io = require('socket.io')(server, {
    cors: {
        origin: '*',
        methods: [
            'GET',
            'POST'
        ]
    }
})

app.use(cors());

const PORT = process.env.PORT || 5000;

app.get('/', (req, res) => {
    res.send('Server is running');
});

io.on('connection', (socket) => {
    socket.emit('me', socket.id);

    socket.on('disconnect', () => {
        socket.broadcast.emit('callended')
    });

    socket.on('calluser', ({ userToCall, signalData, from, name }) => {
        io.to(userToCall).emit('calluser', { signal: signalData, from, name });
    });

    socket.on('answercall', (data) => {
        io.to(data.to).emit('callaccepted', data.signal);
    });
});


    

server.listen(PORT, () => console.log(`Server listening on port ${PORT}`));