Tiny chat server

README.md

Usage

1. PORT=1337 node index to start the server
2. telnet localhost 1227 to connect to the server

index.js

var net = require('net')
  , port = process.env.PORT || 3000
  , clients = []
  , server = net.createServer(handler)

server.listen(port, function() {
  console.log('Listening on port', port)
})

// Send a message to every socket, save for `omitSocket`
function send(message, omitSocket) {
  clients.forEach(function(s) {
    if (!omitSocket || omitSocket !== s) {
      s.write(message)
    }
  })
}

// Run when a client connects
function handler(socket) {
  clients.push(socket)

  send("Server > Client connected!\n", socket)

  // On input
  socket.on('data', function(message) {
    send(message, socket)
  })

  // On disconnect
  socket.on('end', function(s) {
    send("Server > Client disconnected!\n", socket)
    clients.splice(clients.indexOf(socket), 1)
  })
}