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index.js
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index.js
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const express=require('express')
const path=require('path')
const app=express();
const PORT=process.env.PORT || 4000;
const server=app.listen(PORT || 4000,()=>{
console.log(`server is running on localhost:${PORT}`)
})
const io=require('socket.io')(server)
app.use(express.static(path.join(__dirname,'public')))
const socketsConnected=new Set();
io.on('connection',onConnected);
function onConnected(socket){
// console.log(socket.id)
socketsConnected.add(socket.id);
io.emit('clients-total',socketsConnected.size)
socket.on('disconnect',()=>{
console.log('socket diconnected',socket.id);
socketsConnected.delete(socket.id)
io.emit('clients-total',socketsConnected.size)
})
socket.on('message',(data)=>{
socket.broadcast.emit('chat-message',data);
})
socket.on('feedback',(data)=>{
socket.broadcast.emit('feedback',data);
})
}