demo reconstruction

.eslintrc

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+{
+  "rules": {
+    "no-console": "off",
+    "indent": [ "error", 2 ],
+    "quotes": [ "error", "single" ],
+    "semi": ["error", "always"],
+    "linebreak-style": [ "error", "unix" ]
+  },
+  "env": {
+    "es6": true,
+    "node": true,
+    "mocha": true,
+    "jasmine": true
+  },
+  "ecmaFeatures": {
+    "modules": true,
+    "experimentalObjectRestSpread": true,
+    "impliedStrict": true
+  },
+  "extends": "eslint:recommended"
+}

.gitignore

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+# Created by https://www.gitignore.io/api/node,vim,osx,macos,linux
+
+*node_modules
+
+### Node ###
+# Logs
+logs
+*.log
+npm-debug.log*
+
+# Runtime data
+pids
+*.pid
+*.seed
+*.pid.lock
+
+# Directory for instrumented libs generated by jscoverage/JSCover
+lib-cov
+
+# Coverage directory used by tools like istanbul
+coverage
+
+# nyc test coverage
+.nyc_output
+
+# Grunt intermediate storage (http://gruntjs.com/creating-plugins#storing-task-files)
+.grunt
+
+# node-waf configuration
+.lock-wscript
+
+# Compiled binary addons (http://nodejs.org/api/addons.html)
+build/Release
+
+# Dependency directories
+node_modules
+jspm_packages
+
+# Optional npm cache directory
+.npm
+
+# Optional eslint cache
+.eslintcache
+
+# Optional REPL history
+.node_repl_history
+
+# Output of 'npm pack'
+*.tgz
+
+# Yarn Integrity file
+.yarn-integrity
+
+
+
+### Vim ###
+# swap
+[._]*.s[a-v][a-z]
+[._]*.sw[a-p]
+[._]s[a-v][a-z]
+[._]sw[a-p]
+# session
+Session.vim
+# temporary
+.netrwhist
+*~
+# auto-generated tag files
+tags
+
+
+### OSX ###
+*.DS_Store
+.AppleDouble
+.LSOverride
+
+# Icon must end with two \r
+Icon
+# Thumbnails
+._*
+# Files that might appear in the root of a volume
+.DocumentRevisions-V100
+.fseventsd
+.Spotlight-V100
+.TemporaryItems
+.Trashes
+.VolumeIcon.icns
+.com.apple.timemachine.donotpresent
+# Directories potentially created on remote AFP share
+.AppleDB
+.AppleDesktop
+Network Trash Folder
+Temporary Items
+.apdisk
+
+
+### macOS ###
+# Icon must end with two \r
+# Thumbnails
+# Files that might appear in the root of a volume
+# Directories potentially created on remote AFP share
+
+
+### Linux ###
+
+# temporary files which can be created if a process still has a handle open of a deleted file
+.fuse_hidden*
+
+# KDE directory preferences
+.directory
+
+# Linux trash folder which might appear on any partition or disk
+.Trash-*
+
+# .nfs files are created when an open file is removed but is still being accessed
+.nfs*
+
+# End of https://www.gitignore.io/api/node,vim,osx,macos,linux

gulpfile.js

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+'use strict';
+
+const gulp = require('gulp');
+const eslint = require('gulp-eslint');
+const mocha = require('gulp-mocha');
+
+gulp.task('test', function(){
+  gulp.src('./test/*-test.js', {read: false})
+  .pipe(mocha({reporter:'nyan'}));
+});
+
+gulp.task('lint', function(){
+  return gulp.src(['**/*.js', '!node_modules/**'])
+    .pipe(eslint())
+    .pipe(eslint.format())
+    .pipe(eslint.failAfterError());
+});
+
+gulp.task('dev', function(){
+  gulp.watch(['**/*.js', '!node_modules/**'], ['lint', 'test']);
+});
+
+gulp.task('default', ['dev']);

model/client.js

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+'use strict';
+
+const uuid = require('node-uuid');
+
+const Client = module.exports = function(sokcet) { // module.exports to import it somewhere else
+  this.socket = socket;
+  this.nickname = `user_${Math.random()}`;
+  this.id = uuid.v4();
+};

package.json

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+{
+  "name": "06-tcp_servers",
+  "version": "1.0.0",
+  "description": "",
+  "main": "index.js",
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "keywords": [],
+  "author": "",
+  "license": "ISC",
+  "dependencies": {
+    "node-uuid": "^1.4.8"
+  }
+}

server.js

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+'use strict';
+
+const net = require('net');
+const EE = require('events');
+const Client = require('./model/client.js');
+const PORT = process.env.port || 3000;
+const server = net.createServer();
+const ee = new EE();
+
+const pool = [];
+
+ee.on('@dm', function(client, string) {
+  let nickname = string.split(' ').shift().trim();
+  let message = string.split(' ').slice(1).join(' ').trim();
+
+  pool.forEach( c => { // c is representing client
+    console.log('client:', c.nickname);
+    console.log('nickname:', nickname);
+
+    if (c.nickname === nickname) {
+      c.socket.write(`${client.nickname}: ${message}`);
+    }
+  });
+});
+
+ee.on('@all', function(client, string) {
+  pool.forEach(c => {
+    c.socket.write(`${client.nickname}:` + string);
+  });
+});
+
+ee.on('default', function(client) {
+  client.socket.write('Ayoooo join the party and say a lil something!');
+});
+
+ee.on('@nickname', function(client, message){
+  client.nickname = message[0];
+});
+
+server.on('connection', function(socket) {
+  var client = new Client(socket);
+  pool.push(client);
+
+  socket.on('data', function(data) {
+    const command = data.toString().split(' ').shift().trim();
+
+    if (command.startsWith('@')) {
+      ee.emit (command, client, data.toString().split(' ').slice(1).join(' '));
+      return;
+    }
+  });
+
+  socket.on('close', function(){
+    console.log(`${client.nickname}: has bounced`);
+    pool.forEach((c,index) => {
+      if(c.nickname === client.nickname){
+        pool.splice(index, 1);
+      }
+    });
+    return;
+  });
+
+  socket.on('error', function(error){
+    throw error;
+  });
+
+  ee.emit('default', client);
+});
+
+server.listen(PORT, function() {
+  console.log('ayooooo the party\'s over here!', PORT);
+});