const net = require('net')

const server = net.createServer(c => {
    console.log('Connected')
    c.on('data', d => {
        console.log('data', d.toString())
    })
    c.on('end', () => {
        console.log('client disconnected')
    })
    c.write('220 uwu ESMTP\n')
})

server.listen(2525, () => {
    console.log('works')
})