Stefanie Hansen

.gitignore

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+/node_modules

chat.js

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+'use strict';
+const net = require('net');
+const sockets = [];
+
+net.createServer((socket) => {
+  sockets.push(socket);
+  socket.on('data', (chunk) => {
+    sockets.forEach((sock) => {
+      socket.name = 'Client' + sockets.indexOf(sock);
+      console.log(socket.name);
+      if (socket.name !== sock.name) {
+        socket.write(socket.name + ' says: ' + chunk.toString() + '\n');
+      }
+    });
+  });
+}).listen(3000, () => {
+  console.log('listening on port 3000');
+});

clients.js

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+'use strict';
+const net = require('net');
+
+function createClient(username) {
+  let client = net.connect(3000, () => {
+    client.write('My name is ' + username +  '!\n');
+    client.on('data', (chunk) => {
+      console.log('Message received from ' + chunk.toString().split('\s')[0].trim() + ':\n', chunk.toString());
+    });
+  }).on('error', (err) => {
+    console.log(err);
+    client.end();
+  });
+}
+
+createClient('stefanie');
+createClient('bob');

gulpfile.js

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+'use strict';
+
+const gulp = require('gulp');
+const mocha = require('gulp-mocha');
+const lint = require('gulp-eslint');
+const opts = {
+  'extends': 'eslint:recommended',
+  'ecmaFeatures': {
+    'modules': true
+  },
+  'rules': {
+    'no-alert': 0,
+    'no-bitwise': 0,
+    'camelcase': 1,
+    'no-console': 1,
+    'curly': 1,
+    'eqeqeq': 0,
+    'no-eq-null': 0,
+    'guard-for-in': 1,
+    'no-empty': 1,
+    'no-use-before-define': 0,
+    'no-obj-calls': 2,
+    'no-unused-vars': 0,
+    'new-cap': 1,
+    'no-shadow': 0,
+    'strict': 1,
+    'no-invalid-regexp': 2,
+    'comma-dangle': 2,
+    'no-undef': 1,
+    'no-new': 1,
+    'no-extra-semi': 1,
+    'no-debugger': 2,
+    'no-caller': 1,
+    'semi': 1,
+    'quotes': 0,
+    'no-unreachable': 2
+  },
+  'globals': {
+    '$': false
+  },
+  'env': {
+    'node': true,
+    'es6': true
+  }
+};
+
+gulp.task('linter' , () => {
+  return gulp.src('./**/*.js')
+    .pipe(lint(opts))
+    .pipe(lint.format());
+});
+
+gulp.task('tests', () => {
+  return gulp.src('./test/chat-test.js', {read: false})
+    .pipe(mocha({reporter: 'spec'}));
+});
+
+gulp.task('watch', () => {
+  gulp.watch('./test/chat-test.js', ['linter', 'tests']);
+  gulp.watch('./**/*.js', ['linter']);
+});
+
+gulp.task('default', ['watch', 'linter', 'tests'], () => {
+  console.log('All tasks completed successfully');
+});

package.json

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+{
+  "name": "stefanie-hansen",
+  "version": "1.0.0",
+  "description": "chat server",
+  "main": "chat.js",
+  "directories": {
+    "test": "test"
+  },
+  "scripts": {
+    "test": "echo \"Error: no test specified\" && exit 1"
+  },
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/stefuhnee/tcp_server.git"
+  },
+  "author": "",
+  "license": "ISC",
+  "bugs": {
+    "url": "https://github.com/stefuhnee/tcp_server/issues"
+  },
+  "homepage": "https://github.com/stefuhnee/tcp_server#readme",
+  "devDependencies": {
+    "chai": "^3.5.0",
+    "gulp": "^3.9.1",
+    "gulp-eslint": "^2.0.0",
+    "gulp-mocha": "^2.2.0",
+    "mocha": "^2.4.5"
+  }
+}

test/chat-test.js

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+'use strict';
+
+const net = require('net');
+const expect = require('chai').expect;
+const data = {};
+const sockets = [];
+
+function createServer() {
+  net.createServer((socket) => {
+    sockets.push(socket);
+    socket.on('data', (chunk) => {
+      sockets.forEach((sock) => {
+        socket.name = 'Client' + sockets.indexOf(sock);
+        if (sockets.length === 1 || socket.name !== sock.name) {
+          socket.write('test received');
+        } else {
+          socket.write('not receiving');
+        }
+      });
+    });
+  }).listen(3000, () => {
+    console.log('listening on port 3000');
+  });
+}
+
+function createClient(clientName, done) {
+  if (!data[clientName]) data[clientName] = '';
+  let client = net.connect(3000, () => {
+    client.write('test');
+    client.on('data', (chunk) => {
+      console.log(chunk.toString());
+      data[clientName] += chunk.toString();
+      done();
+    });
+  }).on('error', (err) => {
+    console.log(err);
+    client.end();
+  });
+}
+
+describe('chat test suite', () => {
+  before((done) => {
+    createServer();
+    createClient('test', done);
+  });
+  it('should receive data from the server', () => {
+    expect(data['test']).to.eql('test received');
+  });
+  before((done) => {
+    createClient('secondTest', done);
+  });
+  it('should send data to clients that did not write it', () => {
+    expect(data['test']).to.eql('test received');
+  });
+  it('should not send data to clients that wrote it', () => {
+    expect(data['secondTest']).to.not.eql('test received');
+  });
+});