creationix chat

chat.js

var Net = require('net');
var crypto = require('crypto');

var clients = [];
var clientNames = {};
Net.createServer(function (client) {
  clients.push(new Client(client));
}).listen(1337);

function Client(socket) {
  this.socket = socket;
  this.write("Welcome to the chat server, please ident to gain voice\n");
  console.log("A new client connected");
  this.socket.setEncoding('utf8');
  this.socket.on('data', this.onData.bind(this));
  this.socket.on('close', this.onClose.bind(this));
}

Client.prototype.commands = ["ident"];
Client.prototype.onData = function (chunk) {
  if (chunk[0] == "/") {
    var parts = chunk.substr(1).trim().split(" ");
    var command = parts.shift();
    if (this.commands.indexOf(command) < 0) {
      this.write("Invalid command\n");
      return;
    }
    this[command].apply(this, parts);
    return;
  }
  if (!this.username) {
    this.write("Please ident to gain voice\n");
    return;
  }

  var message = this.color + this.username + this.normalColor + ": " + chunk;
  process.stdout.write(message);
  clients.forEach(function (other) {
    if (other === this) { return; }
    other.write(message);
  }, this);
};

Client.prototype.onClose = function () {
  clients.splice(clients.indexOf(this), 1);
  if (this.username) delete clientNames[this.username];
  console.log("%s disconnected", this.username);
};

Client.prototype.ident = function (name) {
  if (clientNames.hasOwnProperty(name)) {                   j
    this.write("Sorry, that name is taken\n");
    return;
  }
  clientNames[name] = this;
  if (this.username) {
    delete clientNames[this.username];
    console.log("%s renamed to %s", this.username, name);
  } else {
    console.log("%s identified", name);
  }
  this.username = name;
  var color = (crypto.randomBytes(1)[0] % 18) + 30;
  this.color = String.fromCharCode(033) + '[1;' + color + 'm';
  this.normalColor = String.fromCharCode(033) + '[1;m';

  this.write("You are now identified as " + name + "\n");
}

Client.prototype.write = function (message) {
  return this.socket.write(message);
};


console.log("listening on 1337");