chat server

server.js

var net = require('net')

var sockets = [];
var n = 0
var server = net.Server((socket)=>{
  sockets.push(socket)
  socket.lastMsg = 0;
  socket.name = 'anon'+n++
  console.log(socket.name+' joined')
  socket.write('Welcome '+socket.name+'! (Commands: /name /list)\n\r')

  for (var i = 0; i < sockets.length; i++ ){
    if (sockets[i]==socket) continue
    sockets[i].write(socket.name+' joined\n\r')
  }
  socket.on('data',(data)=>{
    if ((new Date() - socket.lastMsg) > 500) {
      if (data.toString().indexOf("�")){
        if (!data.toString().indexOf('/name ')){
          var oldName = socket.name
          socket.name = data.toString().slice(6).trim()
          for (var i = 0; i < sockets.length; i++ ){
            sockets[i].write(oldName+' is now known as '+socket.name+'\n\r')
          }
          socket.lastMsg = new Date()
        } else if (!data.toString().indexOf('/list')){
          socket.write(sockets.map((x)=>x.name).join(', ')+'\n\r')
        } else {
          for (var i = 0; i < sockets.length; i++ ){
            if (sockets[i]==socket) continue
            var name = socket.name || 'P'+i
            sockets[i].write(name+': '+data.toString().trim())
            sockets[i].write('\n\r')
            socket.lastMsg = new Date()
          }
        }
      }
    }
  })
  socket.on('end', ()=>{
    var i = sockets.indexOf(socket)
    name = socket.name
    sockets.splice(i,1)
    for (var i = 0; i < sockets.length; i++ ){
      sockets[i].write(name+' left\n\r')
    }
  })
})

server.listen(4444)