text: // Setup basic express server
  var express = require('express');
  var app = express();
  var path = require('path');
  var server = require('http').createServer(app);
  var io = require('../..')(server);
  var redis = require('socket.io-redis');
  var port = process.env.PORT || 3000;
  
  server.listen(port, () => {
    console.log('Server listening at port %d', port);
  });
  
  // Routing
  app.use(express.static(path.join(__dirname, 'public')));
  
  // Chatroom
  
  var numUsers = 0;
  
  // Adapting Redis
  io.adapter(redis({ host: 'localhost', port: 6379 }));
  
  io.on('connection', (socket) => {
    var addedUser = false;
  
    // when the client emits 'new message', this listens and executes
    socket.on('new message', (data) => {
      // we tell the client to execute 'new message'
      socket.broadcast.emit('new message', {
        username: socket.username,
        message: data
      });
    });
  
    // when the client emits 'add user', this listens and executes
    socket.on('add user', (username) => {
      if (addedUser) return;
  
      // we store the username in the socket session for this client
      socket.username = username;
      ++numUsers;
      addedUser = true;
      socket.emit('login', {
        numUsers: numUsers
      });
      // echo globally (all clients) that a person has connected
      socket.broadcast.emit('user joined', {
        username: socket.username,
        numUsers: numUsers
      });
    });
  
    // when the client emits 'typing', we broadcast it to others
    socket.on('typing', () => {
      socket.broadcast.emit('typing', {
        username: socket.username
      });
    });
  
    // when the client emits 'stop typing', we broadcast it to others
    socket.on('stop typing', () => {
      socket.broadcast.emit('stop typing', {
        username: socket.username
      });
    });
  
    // when the user disconnects.. perform this
    socket.on('disconnect', () => {
      if (addedUser) {
        --numUsers;
  
        // echo globally that this client has left
        socket.broadcast.emit('user left', {
          username: socket.username,
          numUsers: numUsers
        });
      }
    });
  });
  