Node+socket realizes simple chat room function

const net = require('net')
const server = net.createServer()

//User list let clients = []

//Listen for connections server.on('connection',client=>{
    client.on('data',(chunk)=>{
        let data = chunk.toString()
        if(data.match(/login:(.*)/)){
            let name = data.match(/login:(.*)/)[1]
            client.name = name
            clients.push(client)
            console.log(`User ${name} is online`)
        }else{
            for (const client of clients) {
                if(client.name!==JSON.parse(data).name){
                    client.write(data)
                }

            }
        }
    })

    client.on('close',()=>{
        console.log(`User ${client.name} is offline`)
    })

    client.on('error',()=>{
        console.log(`An error occurred for user ${client.name}`)
    })

})

server.on('error',(err)=>{
    console.log('Server error',err)
})

server.on('close',()=>{
    console.log('Server shutdown')
})

server.listen(9527,()=>{
    console.log("Server started")
})

const net = require('net')
const readline = require('readline')
//Read input information const rl = readline.createInterface({
    input: process.stdin,
    output: process.stdout
});

//name const name = process.argv[2]
//Connect to the server const client = net.createConnection({port:9527},()=>{
    console.log(name+'connect to server');
    client.write(`login:${name}`)
    client.name = name
    //Start sending information sendMsg(client)
})

client.on('data', (chunk) => {

    let data = JSON.parse(chunk.toString())
    if(data){
        console.log(`[${data.name}] : ${data.msg}`)
    }
});
client.on('end', () => {
    console.log('Disconnected from server');
});
client.on('error', () => {
    console.log('Server error');
});

//Recursive output function sendMsg(client){

    rl.question('',(line)=>{
        client.write(JSON.stringify({
            name:client.name,
            msg:line
        }))
        sendMsg(client)
    })
}