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+(The MIT License)
+
+Copyright (c) 2014-2018 Automattic <dev@cloudup.com>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@@ -0,0 +1,243 @@
+
+# socket.io
+
+[![Backers on Open Collective](https://opencollective.com/socketio/backers/badge.svg)](#backers) [![Sponsors on Open Collective](https://opencollective.com/socketio/sponsors/badge.svg)](#sponsors)
+[![Build Status](https://secure.travis-ci.org/socketio/socket.io.svg?branch=master)](https://travis-ci.org/socketio/socket.io)
+[![Dependency Status](https://david-dm.org/socketio/socket.io.svg)](https://david-dm.org/socketio/socket.io)
+[![devDependency Status](https://david-dm.org/socketio/socket.io/dev-status.svg)](https://david-dm.org/socketio/socket.io#info=devDependencies)
+[![NPM version](https://badge.fury.io/js/socket.io.svg)](https://www.npmjs.com/package/socket.io)
+![Downloads](https://img.shields.io/npm/dm/socket.io.svg?style=flat)
+[![](https://slackin-socketio.now.sh/badge.svg)](https://slackin-socketio.now.sh)
+
+## Features
+
+Socket.IO enables real-time bidirectional event-based communication. It consists in:
+
+- a Node.js server (this repository)
+- a [Javascript client library](https://github.com/socketio/socket.io-client) for the browser (or a Node.js client)
+
+Some implementations in other languages are also available:
+
+- [Java](https://github.com/socketio/socket.io-client-java)
+- [C++](https://github.com/socketio/socket.io-client-cpp)
+- [Swift](https://github.com/socketio/socket.io-client-swift)
+- [Dart](https://github.com/rikulo/socket.io-client-dart)
+
+Its main features are:
+
+#### Reliability
+
+Connections are established even in the presence of:
+  - proxies and load balancers.
+  - personal firewall and antivirus software.
+
+For this purpose, it relies on [Engine.IO](https://github.com/socketio/engine.io), which first establishes a long-polling connection, then tries to upgrade to better transports that are "tested" on the side, like WebSocket. Please see the [Goals](https://github.com/socketio/engine.io#goals) section for more information.
+
+#### Auto-reconnection support
+
+Unless instructed otherwise a disconnected client will try to reconnect forever, until the server is available again. Please see the available reconnection options [here](https://github.com/socketio/socket.io-client/blob/master/docs/API.md#new-managerurl-options).
+
+#### Disconnection detection
+
+A heartbeat mechanism is implemented at the Engine.IO level, allowing both the server and the client to know when the other one is not responding anymore.
+
+That functionality is achieved with timers set on both the server and the client, with timeout values (the `pingInterval` and `pingTimeout` parameters) shared during the connection handshake. Those timers require any subsequent client calls to be directed to the same server, hence the `sticky-session` requirement when using multiples nodes.
+
+#### Binary support
+
+Any serializable data structures can be emitted, including:
+
+- [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) and [Blob](https://developer.mozilla.org/en-US/docs/Web/API/Blob) in the browser
+- [ArrayBuffer](https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/ArrayBuffer) and [Buffer](https://nodejs.org/api/buffer.html) in Node.js
+
+#### Simple and convenient API
+
+Sample code:
+
+```js
+io.on('connection', function(socket){
+  socket.emit('request', /* */); // emit an event to the socket
+  io.emit('broadcast', /* */); // emit an event to all connected sockets
+  socket.on('reply', function(){ /* */ }); // listen to the event
+});
+```
+
+#### Cross-browser
+
+Browser support is tested in Saucelabs:
+
+[![Sauce Test Status](https://saucelabs.com/browser-matrix/socket.svg)](https://saucelabs.com/u/socket)
+
+#### Multiplexing support
+
+In order to create separation of concerns within your application (for example per module, or based on permissions), Socket.IO allows you to create several `Namespaces`, which will act as separate communication channels but will share the same underlying connection.
+
+#### Room support
+
+Within each `Namespace`, you can define arbitrary channels, called `Rooms`, that sockets can join and leave. You can then broadcast to any given room, reaching every socket that has joined it.
+
+This is a useful feature to send notifications to a group of users, or to a given user connected on several devices for example.
+
+
+**Note:** Socket.IO is not a WebSocket implementation. Although Socket.IO indeed uses WebSocket as a transport when possible, it adds some metadata to each packet: the packet type, the namespace and the ack id when a message acknowledgement is needed. That is why a WebSocket client will not be able to successfully connect to a Socket.IO server, and a Socket.IO client will not be able to connect to a WebSocket server (like `ws://echo.websocket.org`) either. Please see the protocol specification [here](https://github.com/socketio/socket.io-protocol).
+
+## Installation
+
+```bash
+npm install socket.io --save
+```
+
+## How to use
+
+The following example attaches socket.io to a plain Node.JS
+HTTP server listening on port `3000`.
+
+```js
+var server = require('http').createServer();
+var io = require('socket.io')(server);
+io.on('connection', function(client){
+  client.on('event', function(data){});
+  client.on('disconnect', function(){});
+});
+server.listen(3000);
+```
+
+### Standalone
+
+```js
+var io = require('socket.io')();
+io.on('connection', function(client){});
+io.listen(3000);
+```
+
+### In conjunction with Express
+
+Starting with **3.0**, express applications have become request handler
+functions that you pass to `http` or `http` `Server` instances. You need
+to pass the `Server` to `socket.io`, and not the express application
+function. Also make sure to call `.listen` on the `server`, not the `app`.
+
+```js
+var app = require('express')();
+var server = require('http').createServer(app);
+var io = require('socket.io')(server);
+io.on('connection', function(){ /* … */ });
+server.listen(3000);
+```
+
+### In conjunction with Koa
+
+Like Express.JS, Koa works by exposing an application as a request
+handler function, but only by calling the `callback` method.
+
+```js
+var app = require('koa')();
+var server = require('http').createServer(app.callback());
+var io = require('socket.io')(server);
+io.on('connection', function(){ /* … */ });
+server.listen(3000);
+```
+
+## Documentation
+
+Please see the documentation [here](/docs/README.md). Contributions are welcome!
+
+## Debug / logging
+
+Socket.IO is powered by [debug](https://github.com/visionmedia/debug).
+In order to see all the debug output, run your app with the environment variable
+`DEBUG` including the desired scope.
+
+To see the output from all of Socket.IO's debugging scopes you can use:
+
+```
+DEBUG=socket.io* node myapp
+```
+
+## Testing
+
+```
+npm test
+```
+This runs the `gulp` task `test`. By default the test will be run with the source code in `lib` directory.
+
+Set the environmental variable `TEST_VERSION` to `compat` to test the transpiled es5-compat version of the code.
+
+The `gulp` task `test` will always transpile the source code into es5 and export to `dist` first before running the test.
+
+
+## Backers
+
+Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/socketio#backer)]
+
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+
+
+## Sponsors
+
+Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/socketio#sponsor)]
+
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+
+
+## License
+
+[MIT](LICENSE)
@@ -0,0 +1,273 @@
+
+/**
+ * Module dependencies.
+ */
+
+var parser = require('socket.io-parser');
+var debug = require('debug')('socket.io:client');
+var url = require('url');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Client;
+
+/**
+ * Client constructor.
+ *
+ * @param {Server} server instance
+ * @param {Socket} conn
+ * @api private
+ */
+
+function Client(server, conn){
+  this.server = server;
+  this.conn = conn;
+  this.encoder = server.encoder;
+  this.decoder = new server.parser.Decoder();
+  this.id = conn.id;
+  this.request = conn.request;
+  this.setup();
+  this.sockets = {};
+  this.nsps = {};
+  this.connectBuffer = [];
+}
+
+/**
+ * Sets up event listeners.
+ *
+ * @api private
+ */
+
+Client.prototype.setup = function(){
+  this.onclose = this.onclose.bind(this);
+  this.ondata = this.ondata.bind(this);
+  this.onerror = this.onerror.bind(this);
+  this.ondecoded = this.ondecoded.bind(this);
+
+  this.decoder.on('decoded', this.ondecoded);
+  this.conn.on('data', this.ondata);
+  this.conn.on('error', this.onerror);
+  this.conn.on('close', this.onclose);
+};
+
+/**
+ * Connects a client to a namespace.
+ *
+ * @param {String} name namespace
+ * @param {Object} query the query parameters
+ * @api private
+ */
+
+Client.prototype.connect = function(name, query){
+  if (this.server.nsps[name]) {
+    debug('connecting to namespace %s', name);
+    return this.doConnect(name, query);
+  }
+
+  this.server.checkNamespace(name, query, (dynamicNsp) => {
+    if (dynamicNsp) {
+      debug('dynamic namespace %s was created', dynamicNsp.name);
+      this.doConnect(name, query);
+    } else {
+      debug('creation of namespace %s was denied', name);
+      this.packet({ type: parser.ERROR, nsp: name, data: 'Invalid namespace' });
+    }
+  });
+};
+
+/**
+ * Connects a client to a namespace.
+ *
+ * @param {String} name namespace
+ * @param {String} query the query parameters
+ * @api private
+ */
+
+Client.prototype.doConnect = function(name, query){
+  var nsp = this.server.of(name);
+
+  if ('/' != name && !this.nsps['/']) {
+    this.connectBuffer.push(name);
+    return;
+  }
+
+  var self = this;
+  var socket = nsp.add(this, query, function(){
+    self.sockets[socket.id] = socket;
+    self.nsps[nsp.name] = socket;
+
+    if ('/' == nsp.name && self.connectBuffer.length > 0) {
+      self.connectBuffer.forEach(self.connect, self);
+      self.connectBuffer = [];
+    }
+  });
+};
+
+/**
+ * Disconnects from all namespaces and closes transport.
+ *
+ * @api private
+ */
+
+Client.prototype.disconnect = function(){
+  for (var id in this.sockets) {
+    if (this.sockets.hasOwnProperty(id)) {
+      this.sockets[id].disconnect();
+    }
+  }
+  this.sockets = {};
+  this.close();
+};
+
+/**
+ * Removes a socket. Called by each `Socket`.
+ *
+ * @api private
+ */
+
+Client.prototype.remove = function(socket){
+  if (this.sockets.hasOwnProperty(socket.id)) {
+    var nsp = this.sockets[socket.id].nsp.name;
+    delete this.sockets[socket.id];
+    delete this.nsps[nsp];
+  } else {
+    debug('ignoring remove for %s', socket.id);
+  }
+};
+
+/**
+ * Closes the underlying connection.
+ *
+ * @api private
+ */
+
+Client.prototype.close = function(){
+  if ('open' == this.conn.readyState) {
+    debug('forcing transport close');
+    this.conn.close();
+    this.onclose('forced server close');
+  }
+};
+
+/**
+ * Writes a packet to the transport.
+ *
+ * @param {Object} packet object
+ * @param {Object} opts
+ * @api private
+ */
+
+Client.prototype.packet = function(packet, opts){
+  opts = opts || {};
+  var self = this;
+
+  // this writes to the actual connection
+  function writeToEngine(encodedPackets) {
+    if (opts.volatile && !self.conn.transport.writable) return;
+    for (var i = 0; i < encodedPackets.length; i++) {
+      self.conn.write(encodedPackets[i], { compress: opts.compress });
+    }
+  }
+
+  if ('open' == this.conn.readyState) {
+    debug('writing packet %j', packet);
+    if (!opts.preEncoded) { // not broadcasting, need to encode
+      this.encoder.encode(packet, writeToEngine); // encode, then write results to engine
+    } else { // a broadcast pre-encodes a packet
+      writeToEngine(packet);
+    }
+  } else {
+    debug('ignoring packet write %j', packet);
+  }
+};
+
+/**
+ * Called with incoming transport data.
+ *
+ * @api private
+ */
+
+Client.prototype.ondata = function(data){
+  // try/catch is needed for protocol violations (GH-1880)
+  try {
+    this.decoder.add(data);
+  } catch(e) {
+    this.onerror(e);
+  }
+};
+
+/**
+ * Called when parser fully decodes a packet.
+ *
+ * @api private
+ */
+
+Client.prototype.ondecoded = function(packet) {
+  if (parser.CONNECT == packet.type) {
+    this.connect(url.parse(packet.nsp).pathname, url.parse(packet.nsp, true).query);
+  } else {
+    var socket = this.nsps[packet.nsp];
+    if (socket) {
+      process.nextTick(function() {
+        socket.onpacket(packet);
+      });
+    } else {
+      debug('no socket for namespace %s', packet.nsp);
+    }
+  }
+};
+
+/**
+ * Handles an error.
+ *
+ * @param {Object} err object
+ * @api private
+ */
+
+Client.prototype.onerror = function(err){
+  for (var id in this.sockets) {
+    if (this.sockets.hasOwnProperty(id)) {
+      this.sockets[id].onerror(err);
+    }
+  }
+  this.conn.close();
+};
+
+/**
+ * Called upon transport close.
+ *
+ * @param {String} reason
+ * @api private
+ */
+
+Client.prototype.onclose = function(reason){
+  debug('client close with reason %s', reason);
+
+  // ignore a potential subsequent `close` event
+  this.destroy();
+
+  // `nsps` and `sockets` are cleaned up seamlessly
+  for (var id in this.sockets) {
+    if (this.sockets.hasOwnProperty(id)) {
+      this.sockets[id].onclose(reason);
+    }
+  }
+  this.sockets = {};
+
+  this.decoder.destroy(); // clean up decoder
+};
+
+/**
+ * Cleans up event listeners.
+ *
+ * @api private
+ */
+
+Client.prototype.destroy = function(){
+  this.conn.removeListener('data', this.ondata);
+  this.conn.removeListener('error', this.onerror);
+  this.conn.removeListener('close', this.onclose);
+  this.decoder.removeListener('decoded', this.ondecoded);
+};
@@ -0,0 +1,522 @@
+'use strict';
+
+/**
+ * Module dependencies.
+ */
+
+var http = require('http');
+var read = require('fs').readFileSync;
+var path = require('path');
+var exists = require('fs').existsSync;
+var engine = require('engine.io');
+var clientVersion = require('socket.io-client/package.json').version;
+var Client = require('./client');
+var Emitter = require('events').EventEmitter;
+var Namespace = require('./namespace');
+var ParentNamespace = require('./parent-namespace');
+var Adapter = require('socket.io-adapter');
+var parser = require('socket.io-parser');
+var debug = require('debug')('socket.io:server');
+var url = require('url');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Server;
+
+/**
+ * Socket.IO client source.
+ */
+
+var clientSource = undefined;
+var clientSourceMap = undefined;
+
+/**
+ * Server constructor.
+ *
+ * @param {http.Server|Number|Object} srv http server, port or options
+ * @param {Object} [opts]
+ * @api public
+ */
+
+function Server(srv, opts){
+  if (!(this instanceof Server)) return new Server(srv, opts);
+  if ('object' == typeof srv && srv instanceof Object && !srv.listen) {
+    opts = srv;
+    srv = null;
+  }
+  opts = opts || {};
+  this.nsps = {};
+  this.parentNsps = new Map();
+  this.path(opts.path || '/socket.io');
+  this.serveClient(false !== opts.serveClient);
+  this.parser = opts.parser || parser;
+  this.encoder = new this.parser.Encoder();
+  this.adapter(opts.adapter || Adapter);
+  this.origins(opts.origins || '*:*');
+  this.sockets = this.of('/');
+  if (srv) this.attach(srv, opts);
+}
+
+/**
+ * Server request verification function, that checks for allowed origins
+ *
+ * @param {http.IncomingMessage} req request
+ * @param {Function} fn callback to be called with the result: `fn(err, success)`
+ */
+
+Server.prototype.checkRequest = function(req, fn) {
+  var origin = req.headers.origin || req.headers.referer;
+
+  // file:// URLs produce a null Origin which can't be authorized via echo-back
+  if ('null' == origin || null == origin) origin = '*';
+
+  if (!!origin && typeof(this._origins) == 'function') return this._origins(origin, fn);
+  if (this._origins.indexOf('*:*') !== -1) return fn(null, true);
+  if (origin) {
+    try {
+      var parts = url.parse(origin);
+      var defaultPort = 'https:' == parts.protocol ? 443 : 80;
+      parts.port = parts.port != null
+        ? parts.port
+        : defaultPort;
+      var ok =
+        ~this._origins.indexOf(parts.protocol + '//' + parts.hostname + ':' + parts.port) ||
+        ~this._origins.indexOf(parts.hostname + ':' + parts.port) ||
+        ~this._origins.indexOf(parts.hostname + ':*') ||
+        ~this._origins.indexOf('*:' + parts.port);
+      debug('origin %s is %svalid', origin, !!ok ? '' : 'not ');
+      return fn(null, !!ok);
+    } catch (ex) {
+    }
+  }
+  fn(null, false);
+};
+
+/**
+ * Sets/gets whether client code is being served.
+ *
+ * @param {Boolean} v whether to serve client code
+ * @return {Server|Boolean} self when setting or value when getting
+ * @api public
+ */
+
+Server.prototype.serveClient = function(v){
+  if (!arguments.length) return this._serveClient;
+  this._serveClient = v;
+  var resolvePath = function(file){
+    var filepath = path.resolve(__dirname, './../../', file);
+    if (exists(filepath)) {
+      return filepath;
+    }
+    return require.resolve(file);
+  };
+  if (v && !clientSource) {
+    clientSource = read(resolvePath( 'socket.io-client/dist/socket.io.js'), 'utf-8');
+    try {
+      clientSourceMap = read(resolvePath( 'socket.io-client/dist/socket.io.js.map'), 'utf-8');
+    } catch(err) {
+      debug('could not load sourcemap file');
+    }
+  }
+  return this;
+};
+
+/**
+ * Old settings for backwards compatibility
+ */
+
+var oldSettings = {
+  "transports": "transports",
+  "heartbeat timeout": "pingTimeout",
+  "heartbeat interval": "pingInterval",
+  "destroy buffer size": "maxHttpBufferSize"
+};
+
+/**
+ * Backwards compatibility.
+ *
+ * @api public
+ */
+
+Server.prototype.set = function(key, val){
+  if ('authorization' == key && val) {
+    this.use(function(socket, next) {
+      val(socket.request, function(err, authorized) {
+        if (err) return next(new Error(err));
+        if (!authorized) return next(new Error('Not authorized'));
+        next();
+      });
+    });
+  } else if ('origins' == key && val) {
+    this.origins(val);
+  } else if ('resource' == key) {
+    this.path(val);
+  } else if (oldSettings[key] && this.eio[oldSettings[key]]) {
+    this.eio[oldSettings[key]] = val;
+  } else {
+    console.error('Option %s is not valid. Please refer to the README.', key);
+  }
+
+  return this;
+};
+
+/**
+ * Executes the middleware for an incoming namespace not already created on the server.
+ *
+ * @param {String} name name of incoming namespace
+ * @param {Object} query the query parameters
+ * @param {Function} fn callback
+ * @api private
+ */
+
+Server.prototype.checkNamespace = function(name, query, fn){
+  if (this.parentNsps.size === 0) return fn(false);
+
+  const keysIterator = this.parentNsps.keys();
+
+  const run = () => {
+    let nextFn = keysIterator.next();
+    if (nextFn.done) {
+      return fn(false);
+    }
+    nextFn.value(name, query, (err, allow) => {
+      if (err || !allow) {
+        run();
+      } else {
+        fn(this.parentNsps.get(nextFn.value).createChild(name));
+      }
+    });
+  };
+
+  run();
+};
+
+/**
+ * Sets the client serving path.
+ *
+ * @param {String} v pathname
+ * @return {Server|String} self when setting or value when getting
+ * @api public
+ */
+
+Server.prototype.path = function(v){
+  if (!arguments.length) return this._path;
+  this._path = v.replace(/\/$/, '');
+  return this;
+};
+
+/**
+ * Sets the adapter for rooms.
+ *
+ * @param {Adapter} v pathname
+ * @return {Server|Adapter} self when setting or value when getting
+ * @api public
+ */
+
+Server.prototype.adapter = function(v){
+  if (!arguments.length) return this._adapter;
+  this._adapter = v;
+  for (var i in this.nsps) {
+    if (this.nsps.hasOwnProperty(i)) {
+      this.nsps[i].initAdapter();
+    }
+  }
+  return this;
+};
+
+/**
+ * Sets the allowed origins for requests.
+ *
+ * @param {String|String[]} v origins
+ * @return {Server|Adapter} self when setting or value when getting
+ * @api public
+ */
+
+Server.prototype.origins = function(v){
+  if (!arguments.length) return this._origins;
+
+  this._origins = v;
+  return this;
+};
+
+/**
+ * Attaches socket.io to a server or port.
+ *
+ * @param {http.Server|Number} server or port
+ * @param {Object} options passed to engine.io
+ * @return {Server} self
+ * @api public
+ */
+
+Server.prototype.listen =
+Server.prototype.attach = function(srv, opts){
+  if ('function' == typeof srv) {
+    var msg = 'You are trying to attach socket.io to an express ' +
+    'request handler function. Please pass a http.Server instance.';
+    throw new Error(msg);
+  }
+
+  // handle a port as a string
+  if (Number(srv) == srv) {
+    srv = Number(srv);
+  }
+
+  if ('number' == typeof srv) {
+    debug('creating http server and binding to %d', srv);
+    var port = srv;
+    srv = http.Server(function(req, res){
+      res.writeHead(404);
+      res.end();
+    });
+    srv.listen(port);
+
+  }
+
+  // set engine.io path to `/socket.io`
+  opts = opts || {};
+  opts.path = opts.path || this.path();
+  // set origins verification
+  opts.allowRequest = opts.allowRequest || this.checkRequest.bind(this);
+
+  if (this.sockets.fns.length > 0) {
+    this.initEngine(srv, opts);
+    return this;
+  }
+
+  var self = this;
+  var connectPacket = { type: parser.CONNECT, nsp: '/' };
+  this.encoder.encode(connectPacket, function (encodedPacket){
+    // the CONNECT packet will be merged with Engine.IO handshake,
+    // to reduce the number of round trips
+    opts.initialPacket = encodedPacket;
+
+    self.initEngine(srv, opts);
+  });
+  return this;
+};
+
+/**
+ * Initialize engine
+ *
+ * @param {Object} options passed to engine.io
+ * @api private
+ */
+
+Server.prototype.initEngine = function(srv, opts){
+  // initialize engine
+  debug('creating engine.io instance with opts %j', opts);
+  this.eio = engine.attach(srv, opts);
+
+  // attach static file serving
+  if (this._serveClient) this.attachServe(srv);
+
+  // Export http server
+  this.httpServer = srv;
+
+  // bind to engine events
+  this.bind(this.eio);
+};
+
+/**
+ * Attaches the static file serving.
+ *
+ * @param {Function|http.Server} srv http server
+ * @api private
+ */
+
+Server.prototype.attachServe = function(srv){
+  debug('attaching client serving req handler');
+  var url = this._path + '/socket.io.js';
+  var urlMap = this._path + '/socket.io.js.map';
+  var evs = srv.listeners('request').slice(0);
+  var self = this;
+  srv.removeAllListeners('request');
+  srv.on('request', function(req, res) {
+    if (0 === req.url.indexOf(urlMap)) {
+      self.serveMap(req, res);
+    } else if (0 === req.url.indexOf(url)) {
+      self.serve(req, res);
+    } else {
+      for (var i = 0; i < evs.length; i++) {
+        evs[i].call(srv, req, res);
+      }
+    }
+  });
+};
+
+/**
+ * Handles a request serving `/socket.io.js`
+ *
+ * @param {http.Request} req
+ * @param {http.Response} res
+ * @api private
+ */
+
+Server.prototype.serve = function(req, res){
+  // Per the standard, ETags must be quoted:
+  // https://tools.ietf.org/html/rfc7232#section-2.3
+  var expectedEtag = '"' + clientVersion + '"';
+
+  var etag = req.headers['if-none-match'];
+  if (etag) {
+    if (expectedEtag == etag) {
+      debug('serve client 304');
+      res.writeHead(304);
+      res.end();
+      return;
+    }
+  }
+
+  debug('serve client source');
+  res.setHeader('Content-Type', 'application/javascript');
+  res.setHeader('ETag', expectedEtag);
+  res.writeHead(200);
+  res.end(clientSource);
+};
+
+/**
+ * Handles a request serving `/socket.io.js.map`
+ *
+ * @param {http.Request} req
+ * @param {http.Response} res
+ * @api private
+ */
+
+Server.prototype.serveMap = function(req, res){
+  // Per the standard, ETags must be quoted:
+  // https://tools.ietf.org/html/rfc7232#section-2.3
+  var expectedEtag = '"' + clientVersion + '"';
+
+  var etag = req.headers['if-none-match'];
+  if (etag) {
+    if (expectedEtag == etag) {
+      debug('serve client 304');
+      res.writeHead(304);
+      res.end();
+      return;
+    }
+  }
+
+  debug('serve client sourcemap');
+  res.setHeader('Content-Type', 'application/json');
+  res.setHeader('ETag', expectedEtag);
+  res.writeHead(200);
+  res.end(clientSourceMap);
+};
+
+/**
+ * Binds socket.io to an engine.io instance.
+ *
+ * @param {engine.Server} engine engine.io (or compatible) server
+ * @return {Server} self
+ * @api public
+ */
+
+Server.prototype.bind = function(engine){
+  this.engine = engine;
+  this.engine.on('connection', this.onconnection.bind(this));
+  return this;
+};
+
+/**
+ * Called with each incoming transport connection.
+ *
+ * @param {engine.Socket} conn
+ * @return {Server} self
+ * @api public
+ */
+
+Server.prototype.onconnection = function(conn){
+  debug('incoming connection with id %s', conn.id);
+  var client = new Client(this, conn);
+  client.connect('/');
+  return this;
+};
+
+/**
+ * Looks up a namespace.
+ *
+ * @param {String|RegExp|Function} name nsp name
+ * @param {Function} [fn] optional, nsp `connection` ev handler
+ * @api public
+ */
+
+Server.prototype.of = function(name, fn){
+  if (typeof name === 'function' || name instanceof RegExp) {
+    const parentNsp = new ParentNamespace(this);
+    debug('initializing parent namespace %s', parentNsp.name);
+    if (typeof name === 'function') {
+      this.parentNsps.set(name, parentNsp);
+    } else {
+      this.parentNsps.set((nsp, conn, next) => next(null, name.test(nsp)), parentNsp);
+    }
+    if (fn) parentNsp.on('connect', fn);
+    return parentNsp;
+  }
+
+  if (String(name)[0] !== '/') name = '/' + name;
+
+  var nsp = this.nsps[name];
+  if (!nsp) {
+    debug('initializing namespace %s', name);
+    nsp = new Namespace(this, name);
+    this.nsps[name] = nsp;
+  }
+  if (fn) nsp.on('connect', fn);
+  return nsp;
+};
+
+/**
+ * Closes server connection
+ *
+ * @param {Function} [fn] optional, called as `fn([err])` on error OR all conns closed
+ * @api public
+ */
+
+Server.prototype.close = function(fn){
+  for (var id in this.nsps['/'].sockets) {
+    if (this.nsps['/'].sockets.hasOwnProperty(id)) {
+      this.nsps['/'].sockets[id].onclose();
+    }
+  }
+
+  this.engine.close();
+
+  if (this.httpServer) {
+    this.httpServer.close(fn);
+  } else {
+    fn && fn();
+  }
+};
+
+/**
+ * Expose main namespace (/).
+ */
+
+var emitterMethods = Object.keys(Emitter.prototype).filter(function(key){
+  return typeof Emitter.prototype[key] === 'function';
+});
+
+emitterMethods.concat(['to', 'in', 'use', 'send', 'write', 'clients', 'compress', 'binary']).forEach(function(fn){
+  Server.prototype[fn] = function(){
+    return this.sockets[fn].apply(this.sockets, arguments);
+  };
+});
+
+Namespace.flags.forEach(function(flag){
+  Object.defineProperty(Server.prototype, flag, {
+    get: function() {
+      this.sockets.flags = this.sockets.flags || {};
+      this.sockets.flags[flag] = true;
+      return this;
+    }
+  });
+});
+
+/**
+ * BC with `io.listen`
+ */
+
+Server.listen = Server;
@@ -0,0 +1,296 @@
+
+/**
+ * Module dependencies.
+ */
+
+var Socket = require('./socket');
+var Emitter = require('events').EventEmitter;
+var parser = require('socket.io-parser');
+var hasBin = require('has-binary2');
+var debug = require('debug')('socket.io:namespace');
+
+/**
+ * Module exports.
+ */
+
+module.exports = exports = Namespace;
+
+/**
+ * Blacklisted events.
+ */
+
+exports.events = [
+  'connect',    // for symmetry with client
+  'connection',
+  'newListener'
+];
+
+/**
+ * Flags.
+ */
+
+exports.flags = [
+  'json',
+  'volatile',
+  'local'
+];
+
+/**
+ * `EventEmitter#emit` reference.
+ */
+
+var emit = Emitter.prototype.emit;
+
+/**
+ * Namespace constructor.
+ *
+ * @param {Server} server instance
+ * @param {Socket} name
+ * @api private
+ */
+
+function Namespace(server, name){
+  this.name = name;
+  this.server = server;
+  this.sockets = {};
+  this.connected = {};
+  this.fns = [];
+  this.ids = 0;
+  this.rooms = [];
+  this.flags = {};
+  this.initAdapter();
+}
+
+/**
+ * Inherits from `EventEmitter`.
+ */
+
+Namespace.prototype.__proto__ = Emitter.prototype;
+
+/**
+ * Apply flags from `Socket`.
+ */
+
+exports.flags.forEach(function(flag){
+  Object.defineProperty(Namespace.prototype, flag, {
+    get: function() {
+      this.flags[flag] = true;
+      return this;
+    }
+  });
+});
+
+/**
+ * Initializes the `Adapter` for this nsp.
+ * Run upon changing adapter by `Server#adapter`
+ * in addition to the constructor.
+ *
+ * @api private
+ */
+
+Namespace.prototype.initAdapter = function(){
+  this.adapter = new (this.server.adapter())(this);
+};
+
+/**
+ * Sets up namespace middleware.
+ *
+ * @return {Namespace} self
+ * @api public
+ */
+
+Namespace.prototype.use = function(fn){
+  if (this.server.eio && this.name === '/') {
+    debug('removing initial packet');
+    delete this.server.eio.initialPacket;
+  }
+  this.fns.push(fn);
+  return this;
+};
+
+/**
+ * Executes the middleware for an incoming client.
+ *
+ * @param {Socket} socket that will get added
+ * @param {Function} fn last fn call in the middleware
+ * @api private
+ */
+
+Namespace.prototype.run = function(socket, fn){
+  var fns = this.fns.slice(0);
+  if (!fns.length) return fn(null);
+
+  function run(i){
+    fns[i](socket, function(err){
+      // upon error, short-circuit
+      if (err) return fn(err);
+
+      // if no middleware left, summon callback
+      if (!fns[i + 1]) return fn(null);
+
+      // go on to next
+      run(i + 1);
+    });
+  }
+
+  run(0);
+};
+
+/**
+ * Targets a room when emitting.
+ *
+ * @param {String} name
+ * @return {Namespace} self
+ * @api public
+ */
+
+Namespace.prototype.to =
+Namespace.prototype.in = function(name){
+  if (!~this.rooms.indexOf(name)) this.rooms.push(name);
+  return this;
+};
+
+/**
+ * Adds a new client.
+ *
+ * @return {Socket}
+ * @api private
+ */
+
+Namespace.prototype.add = function(client, query, fn){
+  debug('adding socket to nsp %s', this.name);
+  var socket = new Socket(this, client, query);
+  var self = this;
+  this.run(socket, function(err){
+    process.nextTick(function(){
+      if ('open' == client.conn.readyState) {
+        if (err) return socket.error(err.data || err.message);
+
+        // track socket
+        self.sockets[socket.id] = socket;
+
+        // it's paramount that the internal `onconnect` logic
+        // fires before user-set events to prevent state order
+        // violations (such as a disconnection before the connection
+        // logic is complete)
+        socket.onconnect();
+        if (fn) fn();
+
+        // fire user-set events
+        self.emit('connect', socket);
+        self.emit('connection', socket);
+      } else {
+        debug('next called after client was closed - ignoring socket');
+      }
+    });
+  });
+  return socket;
+};
+
+/**
+ * Removes a client. Called by each `Socket`.
+ *
+ * @api private
+ */
+
+Namespace.prototype.remove = function(socket){
+  if (this.sockets.hasOwnProperty(socket.id)) {
+    delete this.sockets[socket.id];
+  } else {
+    debug('ignoring remove for %s', socket.id);
+  }
+};
+
+/**
+ * Emits to all clients.
+ *
+ * @return {Namespace} self
+ * @api public
+ */
+
+Namespace.prototype.emit = function(ev){
+  if (~exports.events.indexOf(ev)) {
+    emit.apply(this, arguments);
+    return this;
+  }
+  // set up packet object
+  var args = Array.prototype.slice.call(arguments);
+  var packet = {
+    type: (this.flags.binary !== undefined ? this.flags.binary : hasBin(args)) ? parser.BINARY_EVENT : parser.EVENT,
+    data: args
+  };
+
+  if ('function' == typeof args[args.length - 1]) {
+    throw new Error('Callbacks are not supported when broadcasting');
+  }
+
+  var rooms = this.rooms.slice(0);
+  var flags = Object.assign({}, this.flags);
+
+  // reset flags
+  this.rooms = [];
+  this.flags = {};
+
+  this.adapter.broadcast(packet, {
+    rooms: rooms,
+    flags: flags
+  });
+
+  return this;
+};
+
+/**
+ * Sends a `message` event to all clients.
+ *
+ * @return {Namespace} self
+ * @api public
+ */
+
+Namespace.prototype.send =
+Namespace.prototype.write = function(){
+  var args = Array.prototype.slice.call(arguments);
+  args.unshift('message');
+  this.emit.apply(this, args);
+  return this;
+};
+
+/**
+ * Gets a list of clients.
+ *
+ * @return {Namespace} self
+ * @api public
+ */
+
+Namespace.prototype.clients = function(fn){
+  this.adapter.clients(this.rooms, fn);
+  // reset rooms for scenario:
+  // .in('room').clients() (GH-1978)
+  this.rooms = [];
+  return this;
+};
+
+/**
+ * Sets the compress flag.
+ *
+ * @param {Boolean} compress if `true`, compresses the sending data
+ * @return {Socket} self
+ * @api public
+ */
+
+Namespace.prototype.compress = function(compress){
+  this.flags.compress = compress;
+  return this;
+};
+
+/**
+ * Sets the binary flag
+ *
+ * @param {Boolean} Encode as if it has binary data if `true`, Encode as if it doesnt have binary data if `false`
+ * @return {Socket} self
+ * @api public
+ */
+
+ Namespace.prototype.binary = function (binary) {
+   this.flags.binary = binary;
+   return this;
+ };
@@ -0,0 +1,39 @@
+'use strict';
+
+const Namespace = require('./namespace');
+
+let count = 0;
+
+class ParentNamespace extends Namespace {
+
+  constructor(server) {
+    super(server, '/_' + (count++));
+    this.children = new Set();
+  }
+
+  initAdapter() {}
+
+  emit() {
+    const args = Array.prototype.slice.call(arguments);
+
+    this.children.forEach(nsp => {
+      nsp.rooms = this.rooms;
+      nsp.flags = this.flags;
+      nsp.emit.apply(nsp, args);
+    });
+    this.rooms = [];
+    this.flags = {};
+  }
+
+  createChild(name) {
+    const namespace = new Namespace(this.server, name);
+    namespace.fns = this.fns.slice(0);
+    this.listeners('connect').forEach(listener => namespace.on('connect', listener));
+    this.listeners('connection').forEach(listener => namespace.on('connection', listener));
+    this.children.add(namespace);
+    this.server.nsps[name] = namespace;
+    return namespace;
+  }
+}
+
+module.exports = ParentNamespace;
@@ -0,0 +1,572 @@
+
+/**
+ * Module dependencies.
+ */
+
+var Emitter = require('events').EventEmitter;
+var parser = require('socket.io-parser');
+var hasBin = require('has-binary2');
+var url = require('url');
+var debug = require('debug')('socket.io:socket');
+
+/**
+ * Module exports.
+ */
+
+module.exports = exports = Socket;
+
+/**
+ * Blacklisted events.
+ *
+ * @api public
+ */
+
+exports.events = [
+  'error',
+  'connect',
+  'disconnect',
+  'disconnecting',
+  'newListener',
+  'removeListener'
+];
+
+/**
+ * Flags.
+ *
+ * @api private
+ */
+
+var flags = [
+  'json',
+  'volatile',
+  'broadcast',
+  'local'
+];
+
+/**
+ * `EventEmitter#emit` reference.
+ */
+
+var emit = Emitter.prototype.emit;
+
+/**
+ * Interface to a `Client` for a given `Namespace`.
+ *
+ * @param {Namespace} nsp
+ * @param {Client} client
+ * @api public
+ */
+
+function Socket(nsp, client, query){
+  this.nsp = nsp;
+  this.server = nsp.server;
+  this.adapter = this.nsp.adapter;
+  this.id = nsp.name !== '/' ? nsp.name + '#' + client.id : client.id;
+  this.client = client;
+  this.conn = client.conn;
+  this.rooms = {};
+  this.acks = {};
+  this.connected = true;
+  this.disconnected = false;
+  this.handshake = this.buildHandshake(query);
+  this.fns = [];
+  this.flags = {};
+  this._rooms = [];
+}
+
+/**
+ * Inherits from `EventEmitter`.
+ */
+
+Socket.prototype.__proto__ = Emitter.prototype;
+
+/**
+ * Apply flags from `Socket`.
+ */
+
+flags.forEach(function(flag){
+  Object.defineProperty(Socket.prototype, flag, {
+    get: function() {
+      this.flags[flag] = true;
+      return this;
+    }
+  });
+});
+
+/**
+ * `request` engine.io shortcut.
+ *
+ * @api public
+ */
+
+Object.defineProperty(Socket.prototype, 'request', {
+  get: function() {
+    return this.conn.request;
+  }
+});
+
+/**
+ * Builds the `handshake` BC object
+ *
+ * @api private
+ */
+
+Socket.prototype.buildHandshake = function(query){
+  var self = this;
+  function buildQuery(){
+    var requestQuery = url.parse(self.request.url, true).query;
+    //if socket-specific query exist, replace query strings in requestQuery
+    return Object.assign({}, query, requestQuery);
+  }
+  return {
+    headers: this.request.headers,
+    time: (new Date) + '',
+    address: this.conn.remoteAddress,
+    xdomain: !!this.request.headers.origin,
+    secure: !!this.request.connection.encrypted,
+    issued: +(new Date),
+    url: this.request.url,
+    query: buildQuery()
+  };
+};
+
+/**
+ * Emits to this client.
+ *
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.emit = function(ev){
+  if (~exports.events.indexOf(ev)) {
+    emit.apply(this, arguments);
+    return this;
+  }
+
+  var args = Array.prototype.slice.call(arguments);
+  var packet = {
+    type: (this.flags.binary !== undefined ? this.flags.binary : hasBin(args)) ? parser.BINARY_EVENT : parser.EVENT,
+    data: args
+  };
+
+  // access last argument to see if it's an ACK callback
+  if (typeof args[args.length - 1] === 'function') {
+    if (this._rooms.length || this.flags.broadcast) {
+      throw new Error('Callbacks are not supported when broadcasting');
+    }
+
+    debug('emitting packet with ack id %d', this.nsp.ids);
+    this.acks[this.nsp.ids] = args.pop();
+    packet.id = this.nsp.ids++;
+  }
+
+  var rooms = this._rooms.slice(0);
+  var flags = Object.assign({}, this.flags);
+
+  // reset flags
+  this._rooms = [];
+  this.flags = {};
+
+  if (rooms.length || flags.broadcast) {
+    this.adapter.broadcast(packet, {
+      except: [this.id],
+      rooms: rooms,
+      flags: flags
+    });
+  } else {
+    // dispatch packet
+    this.packet(packet, flags);
+  }
+  return this;
+};
+
+/**
+ * Targets a room when broadcasting.
+ *
+ * @param {String} name
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.to =
+Socket.prototype.in = function(name){
+  if (!~this._rooms.indexOf(name)) this._rooms.push(name);
+  return this;
+};
+
+/**
+ * Sends a `message` event.
+ *
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.send =
+Socket.prototype.write = function(){
+  var args = Array.prototype.slice.call(arguments);
+  args.unshift('message');
+  this.emit.apply(this, args);
+  return this;
+};
+
+/**
+ * Writes a packet.
+ *
+ * @param {Object} packet object
+ * @param {Object} opts options
+ * @api private
+ */
+
+Socket.prototype.packet = function(packet, opts){
+  packet.nsp = this.nsp.name;
+  opts = opts || {};
+  opts.compress = false !== opts.compress;
+  this.client.packet(packet, opts);
+};
+
+/**
+ * Joins a room.
+ *
+ * @param {String|Array} room or array of rooms
+ * @param {Function} fn optional, callback
+ * @return {Socket} self
+ * @api private
+ */
+
+Socket.prototype.join = function(rooms, fn){
+  debug('joining room %s', rooms);
+  var self = this;
+  if (!Array.isArray(rooms)) {
+    rooms = [rooms];
+  }
+  rooms = rooms.filter(function (room) {
+    return !self.rooms.hasOwnProperty(room);
+  });
+  if (!rooms.length) {
+    fn && fn(null);
+    return this;
+  }
+  this.adapter.addAll(this.id, rooms, function(err){
+    if (err) return fn && fn(err);
+    debug('joined room %s', rooms);
+    rooms.forEach(function (room) {
+      self.rooms[room] = room;
+    });
+    fn && fn(null);
+  });
+  return this;
+};
+
+/**
+ * Leaves a room.
+ *
+ * @param {String} room
+ * @param {Function} fn optional, callback
+ * @return {Socket} self
+ * @api private
+ */
+
+Socket.prototype.leave = function(room, fn){
+  debug('leave room %s', room);
+  var self = this;
+  this.adapter.del(this.id, room, function(err){
+    if (err) return fn && fn(err);
+    debug('left room %s', room);
+    delete self.rooms[room];
+    fn && fn(null);
+  });
+  return this;
+};
+
+/**
+ * Leave all rooms.
+ *
+ * @api private
+ */
+
+Socket.prototype.leaveAll = function(){
+  this.adapter.delAll(this.id);
+  this.rooms = {};
+};
+
+/**
+ * Called by `Namespace` upon successful
+ * middleware execution (ie: authorization).
+ * Socket is added to namespace array before
+ * call to join, so adapters can access it.
+ *
+ * @api private
+ */
+
+Socket.prototype.onconnect = function(){
+  debug('socket connected - writing packet');
+  this.nsp.connected[this.id] = this;
+  this.join(this.id);
+  var skip = this.nsp.name === '/' && this.nsp.fns.length === 0;
+  if (skip) {
+    debug('packet already sent in initial handshake');
+  } else {
+    this.packet({ type: parser.CONNECT });
+  }
+};
+
+/**
+ * Called with each packet. Called by `Client`.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onpacket = function(packet){
+  debug('got packet %j', packet);
+  switch (packet.type) {
+    case parser.EVENT:
+      this.onevent(packet);
+      break;
+
+    case parser.BINARY_EVENT:
+      this.onevent(packet);
+      break;
+
+    case parser.ACK:
+      this.onack(packet);
+      break;
+
+    case parser.BINARY_ACK:
+      this.onack(packet);
+      break;
+
+    case parser.DISCONNECT:
+      this.ondisconnect();
+      break;
+
+    case parser.ERROR:
+      this.onerror(new Error(packet.data));
+  }
+};
+
+/**
+ * Called upon event packet.
+ *
+ * @param {Object} packet object
+ * @api private
+ */
+
+Socket.prototype.onevent = function(packet){
+  var args = packet.data || [];
+  debug('emitting event %j', args);
+
+  if (null != packet.id) {
+    debug('attaching ack callback to event');
+    args.push(this.ack(packet.id));
+  }
+
+  this.dispatch(args);
+};
+
+/**
+ * Produces an ack callback to emit with an event.
+ *
+ * @param {Number} id packet id
+ * @api private
+ */
+
+Socket.prototype.ack = function(id){
+  var self = this;
+  var sent = false;
+  return function(){
+    // prevent double callbacks
+    if (sent) return;
+    var args = Array.prototype.slice.call(arguments);
+    debug('sending ack %j', args);
+
+    self.packet({
+      id: id,
+      type: hasBin(args) ? parser.BINARY_ACK : parser.ACK,
+      data: args
+    });
+
+    sent = true;
+  };
+};
+
+/**
+ * Called upon ack packet.
+ *
+ * @api private
+ */
+
+Socket.prototype.onack = function(packet){
+  var ack = this.acks[packet.id];
+  if ('function' == typeof ack) {
+    debug('calling ack %s with %j', packet.id, packet.data);
+    ack.apply(this, packet.data);
+    delete this.acks[packet.id];
+  } else {
+    debug('bad ack %s', packet.id);
+  }
+};
+
+/**
+ * Called upon client disconnect packet.
+ *
+ * @api private
+ */
+
+Socket.prototype.ondisconnect = function(){
+  debug('got disconnect packet');
+  this.onclose('client namespace disconnect');
+};
+
+/**
+ * Handles a client error.
+ *
+ * @api private
+ */
+
+Socket.prototype.onerror = function(err){
+  if (this.listeners('error').length) {
+    this.emit('error', err);
+  } else {
+    console.error('Missing error handler on `socket`.');
+    console.error(err.stack);
+  }
+};
+
+/**
+ * Called upon closing. Called by `Client`.
+ *
+ * @param {String} reason
+ * @throw {Error} optional error object
+ * @api private
+ */
+
+Socket.prototype.onclose = function(reason){
+  if (!this.connected) return this;
+  debug('closing socket - reason %s', reason);
+  this.emit('disconnecting', reason);
+  this.leaveAll();
+  this.nsp.remove(this);
+  this.client.remove(this);
+  this.connected = false;
+  this.disconnected = true;
+  delete this.nsp.connected[this.id];
+  this.emit('disconnect', reason);
+};
+
+/**
+ * Produces an `error` packet.
+ *
+ * @param {Object} err error object
+ * @api private
+ */
+
+Socket.prototype.error = function(err){
+  this.packet({ type: parser.ERROR, data: err });
+};
+
+/**
+ * Disconnects this client.
+ *
+ * @param {Boolean} close if `true`, closes the underlying connection
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.disconnect = function(close){
+  if (!this.connected) return this;
+  if (close) {
+    this.client.disconnect();
+  } else {
+    this.packet({ type: parser.DISCONNECT });
+    this.onclose('server namespace disconnect');
+  }
+  return this;
+};
+
+/**
+ * Sets the compress flag.
+ *
+ * @param {Boolean} compress if `true`, compresses the sending data
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.compress = function(compress){
+  this.flags.compress = compress;
+  return this;
+};
+
+/**
+ * Sets the binary flag
+ *
+ * @param {Boolean} Encode as if it has binary data if `true`, Encode as if it doesnt have binary data if `false`
+ * @return {Socket} self
+ * @api public
+ */
+
+ Socket.prototype.binary = function (binary) {
+   this.flags.binary = binary;
+   return this;
+ };
+
+/**
+ * Dispatch incoming event to socket listeners.
+ *
+ * @param {Array} event that will get emitted
+ * @api private
+ */
+
+Socket.prototype.dispatch = function(event){
+  debug('dispatching an event %j', event);
+  var self = this;
+  function dispatchSocket(err) {
+    process.nextTick(function(){
+      if (err) {
+        return self.error(err.data || err.message);
+      }
+      emit.apply(self, event);
+    });
+  }
+  this.run(event, dispatchSocket);
+};
+
+/**
+ * Sets up socket middleware.
+ *
+ * @param {Function} middleware function (event, next)
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.use = function(fn){
+  this.fns.push(fn);
+  return this;
+};
+
+/**
+ * Executes the middleware for an incoming event.
+ *
+ * @param {Array} event that will get emitted
+ * @param {Function} last fn call in the middleware
+ * @api private
+ */
+Socket.prototype.run = function(event, fn){
+  var fns = this.fns.slice(0);
+  if (!fns.length) return fn(null);
+
+  function run(i){
+    fns[i](event, function(err){
+      // upon error, short-circuit
+      if (err) return fn(err);
+
+      // if no middleware left, summon callback
+      if (!fns[i + 1]) return fn(null);
+
+      // go on to next
+      run(i + 1);
+    });
+  }
+
+  run(0);
+};
@@ -0,0 +1 @@
+repo_token: SIAeZjKYlHK74rbcFvNHMUzjRiMpflxve
@@ -0,0 +1,14 @@
+{
+  "env": {
+    "browser": true,
+    "node": true
+  },
+  "globals": {
+    "chrome": true
+  },
+  "rules": {
+    "no-console": 0,
+    "no-empty": [1, { "allowEmptyCatch": true }]
+  },
+  "extends": "eslint:recommended"
+}
@@ -0,0 +1,9 @@
+support
+test
+examples
+example
+*.sock
+dist
+yarn.lock
+coverage
+bower.json
@@ -0,0 +1,20 @@
+sudo: false
+
+language: node_js
+
+node_js:
+  - "4"
+  - "6"
+  - "8"
+
+install:
+  - make install
+
+script:
+  - make lint
+  - make test
+
+matrix:
+  include:
+  - node_js: '8'
+    env: BROWSER=1
@@ -0,0 +1,395 @@
+
+3.1.0 / 2017-09-26
+==================
+
+  * Add `DEBUG_HIDE_DATE` env var (#486)
+  * Remove ReDoS regexp in %o formatter (#504)
+  * Remove "component" from package.json
+  * Remove `component.json`
+  * Ignore package-lock.json
+  * Examples: fix colors printout
+  * Fix: browser detection
+  * Fix: spelling mistake (#496, @EdwardBetts)
+
+3.0.1 / 2017-08-24
+==================
+
+  * Fix: Disable colors in Edge and Internet Explorer (#489)
+
+3.0.0 / 2017-08-08
+==================
+
+  * Breaking: Remove DEBUG_FD (#406)
+  * Breaking: Use `Date#toISOString()` instead to `Date#toUTCString()` when output is not a TTY (#418)
+  * Breaking: Make millisecond timer namespace specific and allow 'always enabled' output (#408)
+  * Addition: document `enabled` flag (#465)
+  * Addition: add 256 colors mode (#481)
+  * Addition: `enabled()` updates existing debug instances, add `destroy()` function (#440)
+  * Update: component: update "ms" to v2.0.0
+  * Update: separate the Node and Browser tests in Travis-CI
+  * Update: refactor Readme, fixed documentation, added "Namespace Colors" section, redid screenshots
+  * Update: separate Node.js and web browser examples for organization
+  * Update: update "browserify" to v14.4.0
+  * Fix: fix Readme typo (#473)
+
+2.6.9 / 2017-09-22
+==================
+
+  * remove ReDoS regexp in %o formatter (#504)
+
+2.6.8 / 2017-05-18
+==================
+
+  * Fix: Check for undefined on browser globals (#462, @marbemac)
+
+2.6.7 / 2017-05-16
+==================
+
+  * Fix: Update ms to 2.0.0 to fix regular expression denial of service vulnerability (#458, @hubdotcom)
+  * Fix: Inline extend function in node implementation (#452, @dougwilson)
+  * Docs: Fix typo (#455, @msasad)
+
+2.6.5 / 2017-04-27
+==================
+  
+  * Fix: null reference check on window.documentElement.style.WebkitAppearance (#447, @thebigredgeek)
+  * Misc: clean up browser reference checks (#447, @thebigredgeek)
+  * Misc: add npm-debug.log to .gitignore (@thebigredgeek)
+
+
+2.6.4 / 2017-04-20
+==================
+
+  * Fix: bug that would occur if process.env.DEBUG is a non-string value. (#444, @LucianBuzzo)
+  * Chore: ignore bower.json in npm installations. (#437, @joaovieira)
+  * Misc: update "ms" to v0.7.3 (@tootallnate)
+
+2.6.3 / 2017-03-13
+==================
+
+  * Fix: Electron reference to `process.env.DEBUG` (#431, @paulcbetts)
+  * Docs: Changelog fix (@thebigredgeek)
+
+2.6.2 / 2017-03-10
+==================
+
+  * Fix: DEBUG_MAX_ARRAY_LENGTH (#420, @slavaGanzin)
+  * Docs: Add backers and sponsors from Open Collective (#422, @piamancini)
+  * Docs: Add Slackin invite badge (@tootallnate)
+
+2.6.1 / 2017-02-10
+==================
+
+  * Fix: Module's `export default` syntax fix for IE8 `Expected identifier` error
+  * Fix: Whitelist DEBUG_FD for values 1 and 2 only (#415, @pi0)
+  * Fix: IE8 "Expected identifier" error (#414, @vgoma)
+  * Fix: Namespaces would not disable once enabled (#409, @musikov)
+
+2.6.0 / 2016-12-28
+==================
+
+  * Fix: added better null pointer checks for browser useColors (@thebigredgeek)
+  * Improvement: removed explicit `window.debug` export (#404, @tootallnate)
+  * Improvement: deprecated `DEBUG_FD` environment variable (#405, @tootallnate)
+
+2.5.2 / 2016-12-25
+==================
+
+  * Fix: reference error on window within webworkers (#393, @KlausTrainer)
+  * Docs: fixed README typo (#391, @lurch)
+  * Docs: added notice about v3 api discussion (@thebigredgeek)
+
+2.5.1 / 2016-12-20
+==================
+
+  * Fix: babel-core compatibility
+
+2.5.0 / 2016-12-20
+==================
+
+  * Fix: wrong reference in bower file (@thebigredgeek)
+  * Fix: webworker compatibility (@thebigredgeek)
+  * Fix: output formatting issue (#388, @kribblo)
+  * Fix: babel-loader compatibility (#383, @escwald)
+  * Misc: removed built asset from repo and publications (@thebigredgeek)
+  * Misc: moved source files to /src (#378, @yamikuronue)
+  * Test: added karma integration and replaced babel with browserify for browser tests (#378, @yamikuronue)
+  * Test: coveralls integration (#378, @yamikuronue)
+  * Docs: simplified language in the opening paragraph (#373, @yamikuronue)
+
+2.4.5 / 2016-12-17
+==================
+
+  * Fix: `navigator` undefined in Rhino (#376, @jochenberger)
+  * Fix: custom log function (#379, @hsiliev)
+  * Improvement: bit of cleanup + linting fixes (@thebigredgeek)
+  * Improvement: rm non-maintainted `dist/` dir (#375, @freewil)
+  * Docs: simplified language in the opening paragraph. (#373, @yamikuronue)
+
+2.4.4 / 2016-12-14
+==================
+
+  * Fix: work around debug being loaded in preload scripts for electron (#368, @paulcbetts)
+
+2.4.3 / 2016-12-14
+==================
+
+  * Fix: navigation.userAgent error for react native (#364, @escwald)
+
+2.4.2 / 2016-12-14
+==================
+
+  * Fix: browser colors (#367, @tootallnate)
+  * Misc: travis ci integration (@thebigredgeek)
+  * Misc: added linting and testing boilerplate with sanity check (@thebigredgeek)
+
+2.4.1 / 2016-12-13
+==================
+
+  * Fix: typo that broke the package (#356)
+
+2.4.0 / 2016-12-13
+==================
+
+  * Fix: bower.json references unbuilt src entry point (#342, @justmatt)
+  * Fix: revert "handle regex special characters" (@tootallnate)
+  * Feature: configurable util.inspect()`options for NodeJS (#327, @tootallnate)
+  * Feature: %O`(big O) pretty-prints objects (#322, @tootallnate)
+  * Improvement: allow colors in workers (#335, @botverse)
+  * Improvement: use same color for same namespace. (#338, @lchenay)
+
+2.3.3 / 2016-11-09
+==================
+
+  * Fix: Catch `JSON.stringify()` errors (#195, Jovan Alleyne)
+  * Fix: Returning `localStorage` saved values (#331, Levi Thomason)
+  * Improvement: Don't create an empty object when no `process` (Nathan Rajlich)
+
+2.3.2 / 2016-11-09
+==================
+
+  * Fix: be super-safe in index.js as well (@TooTallNate)
+  * Fix: should check whether process exists (Tom Newby)
+
+2.3.1 / 2016-11-09
+==================
+
+  * Fix: Added electron compatibility (#324, @paulcbetts)
+  * Improvement: Added performance optimizations (@tootallnate)
+  * Readme: Corrected PowerShell environment variable example (#252, @gimre)
+  * Misc: Removed yarn lock file from source control (#321, @fengmk2)
+
+2.3.0 / 2016-11-07
+==================
+
+  * Fix: Consistent placement of ms diff at end of output (#215, @gorangajic)
+  * Fix: Escaping of regex special characters in namespace strings (#250, @zacronos)
+  * Fix: Fixed bug causing crash on react-native (#282, @vkarpov15)
+  * Feature: Enabled ES6+ compatible import via default export (#212 @bucaran)
+  * Feature: Added %O formatter to reflect Chrome's console.log capability (#279, @oncletom)
+  * Package: Update "ms" to 0.7.2 (#315, @DevSide)
+  * Package: removed superfluous version property from bower.json (#207 @kkirsche)
+  * Readme: fix USE_COLORS to DEBUG_COLORS
+  * Readme: Doc fixes for format string sugar (#269, @mlucool)
+  * Readme: Updated docs for DEBUG_FD and DEBUG_COLORS environment variables (#232, @mattlyons0)
+  * Readme: doc fixes for PowerShell (#271 #243, @exoticknight @unreadable)
+  * Readme: better docs for browser support (#224, @matthewmueller)
+  * Tooling: Added yarn integration for development (#317, @thebigredgeek)
+  * Misc: Renamed History.md to CHANGELOG.md (@thebigredgeek)
+  * Misc: Added license file (#226 #274, @CantemoInternal @sdaitzman)
+  * Misc: Updated contributors (@thebigredgeek)
+
+2.2.0 / 2015-05-09
+==================
+
+  * package: update "ms" to v0.7.1 (#202, @dougwilson)
+  * README: add logging to file example (#193, @DanielOchoa)
+  * README: fixed a typo (#191, @amir-s)
+  * browser: expose `storage` (#190, @stephenmathieson)
+  * Makefile: add a `distclean` target (#189, @stephenmathieson)
+
+2.1.3 / 2015-03-13
+==================
+
+  * Updated stdout/stderr example (#186)
+  * Updated example/stdout.js to match debug current behaviour
+  * Renamed example/stderr.js to stdout.js
+  * Update Readme.md (#184)
+  * replace high intensity foreground color for bold (#182, #183)
+
+2.1.2 / 2015-03-01
+==================
+
+  * dist: recompile
+  * update "ms" to v0.7.0
+  * package: update "browserify" to v9.0.3
+  * component: fix "ms.js" repo location
+  * changed bower package name
+  * updated documentation about using debug in a browser
+  * fix: security error on safari (#167, #168, @yields)
+
+2.1.1 / 2014-12-29
+==================
+
+  * browser: use `typeof` to check for `console` existence
+  * browser: check for `console.log` truthiness (fix IE 8/9)
+  * browser: add support for Chrome apps
+  * Readme: added Windows usage remarks
+  * Add `bower.json` to properly support bower install
+
+2.1.0 / 2014-10-15
+==================
+
+  * node: implement `DEBUG_FD` env variable support
+  * package: update "browserify" to v6.1.0
+  * package: add "license" field to package.json (#135, @panuhorsmalahti)
+
+2.0.0 / 2014-09-01
+==================
+
+  * package: update "browserify" to v5.11.0
+  * node: use stderr rather than stdout for logging (#29, @stephenmathieson)
+
+1.0.4 / 2014-07-15
+==================
+
+  * dist: recompile
+  * example: remove `console.info()` log usage
+  * example: add "Content-Type" UTF-8 header to browser example
+  * browser: place %c marker after the space character
+  * browser: reset the "content" color via `color: inherit`
+  * browser: add colors support for Firefox >= v31
+  * debug: prefer an instance `log()` function over the global one (#119)
+  * Readme: update documentation about styled console logs for FF v31 (#116, @wryk)
+
+1.0.3 / 2014-07-09
+==================
+
+  * Add support for multiple wildcards in namespaces (#122, @seegno)
+  * browser: fix lint
+
+1.0.2 / 2014-06-10
+==================
+
+  * browser: update color palette (#113, @gscottolson)
+  * common: make console logging function configurable (#108, @timoxley)
+  * node: fix %o colors on old node <= 0.8.x
+  * Makefile: find node path using shell/which (#109, @timoxley)
+
+1.0.1 / 2014-06-06
+==================
+
+  * browser: use `removeItem()` to clear localStorage
+  * browser, node: don't set DEBUG if namespaces is undefined (#107, @leedm777)
+  * package: add "contributors" section
+  * node: fix comment typo
+  * README: list authors
+
+1.0.0 / 2014-06-04
+==================
+
+  * make ms diff be global, not be scope
+  * debug: ignore empty strings in enable()
+  * node: make DEBUG_COLORS able to disable coloring
+  * *: export the `colors` array
+  * npmignore: don't publish the `dist` dir
+  * Makefile: refactor to use browserify
+  * package: add "browserify" as a dev dependency
+  * Readme: add Web Inspector Colors section
+  * node: reset terminal color for the debug content
+  * node: map "%o" to `util.inspect()`
+  * browser: map "%j" to `JSON.stringify()`
+  * debug: add custom "formatters"
+  * debug: use "ms" module for humanizing the diff
+  * Readme: add "bash" syntax highlighting
+  * browser: add Firebug color support
+  * browser: add colors for WebKit browsers
+  * node: apply log to `console`
+  * rewrite: abstract common logic for Node & browsers
+  * add .jshintrc file
+
+0.8.1 / 2014-04-14
+==================
+
+  * package: re-add the "component" section
+
+0.8.0 / 2014-03-30
+==================
+
+  * add `enable()` method for nodejs. Closes #27
+  * change from stderr to stdout
+  * remove unnecessary index.js file
+
+0.7.4 / 2013-11-13
+==================
+
+  * remove "browserify" key from package.json (fixes something in browserify)
+
+0.7.3 / 2013-10-30
+==================
+
+  * fix: catch localStorage security error when cookies are blocked (Chrome)
+  * add debug(err) support. Closes #46
+  * add .browser prop to package.json. Closes #42
+
+0.7.2 / 2013-02-06
+==================
+
+  * fix package.json
+  * fix: Mobile Safari (private mode) is broken with debug
+  * fix: Use unicode to send escape character to shell instead of octal to work with strict mode javascript
+
+0.7.1 / 2013-02-05
+==================
+
+  * add repository URL to package.json
+  * add DEBUG_COLORED to force colored output
+  * add browserify support
+  * fix component. Closes #24
+
+0.7.0 / 2012-05-04
+==================
+
+  * Added .component to package.json
+  * Added debug.component.js build
+
+0.6.0 / 2012-03-16
+==================
+
+  * Added support for "-" prefix in DEBUG [Vinay Pulim]
+  * Added `.enabled` flag to the node version [TooTallNate]
+
+0.5.0 / 2012-02-02
+==================
+
+  * Added: humanize diffs. Closes #8
+  * Added `debug.disable()` to the CS variant
+  * Removed padding. Closes #10
+  * Fixed: persist client-side variant again. Closes #9
+
+0.4.0 / 2012-02-01
+==================
+
+  * Added browser variant support for older browsers [TooTallNate]
+  * Added `debug.enable('project:*')` to browser variant [TooTallNate]
+  * Added padding to diff (moved it to the right)
+
+0.3.0 / 2012-01-26
+==================
+
+  * Added millisecond diff when isatty, otherwise UTC string
+
+0.2.0 / 2012-01-22
+==================
+
+  * Added wildcard support
+
+0.1.0 / 2011-12-02
+==================
+
+  * Added: remove colors unless stderr isatty [TooTallNate]
+
+0.0.1 / 2010-01-03
+==================
+
+  * Initial release
@@ -0,0 +1,19 @@
+(The MIT License)
+
+Copyright (c) 2014 TJ Holowaychuk <tj@vision-media.ca>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of this software 
+and associated documentation files (the 'Software'), to deal in the Software without restriction, 
+including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, 
+and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all copies or substantial 
+portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT 
+LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. 
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, 
+WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE 
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
+
@@ -0,0 +1,58 @@
+# get Makefile directory name: http://stackoverflow.com/a/5982798/376773
+THIS_MAKEFILE_PATH:=$(word $(words $(MAKEFILE_LIST)),$(MAKEFILE_LIST))
+THIS_DIR:=$(shell cd $(dir $(THIS_MAKEFILE_PATH));pwd)
+
+# BIN directory
+BIN := $(THIS_DIR)/node_modules/.bin
+
+# Path
+PATH := node_modules/.bin:$(PATH)
+SHELL := /bin/bash
+
+# applications
+NODE ?= $(shell which node)
+YARN ?= $(shell which yarn)
+PKG ?= $(if $(YARN),$(YARN),$(NODE) $(shell which npm))
+BROWSERIFY ?= $(NODE) $(BIN)/browserify
+
+install: node_modules
+
+browser: dist/debug.js
+
+node_modules: package.json
+	@NODE_ENV= $(PKG) install
+	@touch node_modules
+
+dist/debug.js: src/*.js node_modules
+	@mkdir -p dist
+	@$(BROWSERIFY) \
+		--standalone debug \
+		. > dist/debug.js
+
+lint:
+	@eslint *.js src/*.js
+
+test-node:
+	@istanbul cover node_modules/mocha/bin/_mocha -- test/**.js
+	@cat ./coverage/lcov.info | ./node_modules/coveralls/bin/coveralls.js
+
+test-browser:
+	@$(MAKE) browser
+	@karma start --single-run
+
+test-all:
+	@concurrently \
+		"make test-node" \
+		"make test-browser"
+
+test:
+	@if [ "x$(BROWSER)" = "x" ]; then \
+		$(MAKE) test-node; \
+		else \
+		$(MAKE) test-browser; \
+	fi
+
+clean:
+	rimraf dist coverage
+
+.PHONY: browser install clean lint test test-all test-node test-browser
@@ -0,0 +1,368 @@
+# debug
+[![Build Status](https://travis-ci.org/visionmedia/debug.svg?branch=master)](https://travis-ci.org/visionmedia/debug)  [![Coverage Status](https://coveralls.io/repos/github/visionmedia/debug/badge.svg?branch=master)](https://coveralls.io/github/visionmedia/debug?branch=master)  [![Slack](https://visionmedia-community-slackin.now.sh/badge.svg)](https://visionmedia-community-slackin.now.sh/) [![OpenCollective](https://opencollective.com/debug/backers/badge.svg)](#backers)
+[![OpenCollective](https://opencollective.com/debug/sponsors/badge.svg)](#sponsors)
+
+<img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png">
+
+A tiny JavaScript debugging utility modelled after Node.js core's debugging
+technique. Works in Node.js and web browsers.
+
+## Installation
+
+```bash
+$ npm install debug
+```
+
+## Usage
+
+`debug` exposes a function; simply pass this function the name of your module, and it will return a decorated version of `console.error` for you to pass debug statements to. This will allow you to toggle the debug output for different parts of your module as well as the module as a whole.
+
+Example [_app.js_](./examples/node/app.js):
+
+```js
+var debug = require('debug')('http')
+  , http = require('http')
+  , name = 'My App';
+
+// fake app
+
+debug('booting %o', name);
+
+http.createServer(function(req, res){
+  debug(req.method + ' ' + req.url);
+  res.end('hello\n');
+}).listen(3000, function(){
+  debug('listening');
+});
+
+// fake worker of some kind
+
+require('./worker');
+```
+
+Example [_worker.js_](./examples/node/worker.js):
+
+```js
+var a = require('debug')('worker:a')
+  , b = require('debug')('worker:b');
+
+function work() {
+  a('doing lots of uninteresting work');
+  setTimeout(work, Math.random() * 1000);
+}
+
+work();
+
+function workb() {
+  b('doing some work');
+  setTimeout(workb, Math.random() * 2000);
+}
+
+workb();
+```
+
+The `DEBUG` environment variable is then used to enable these based on space or
+comma-delimited names.
+
+Here are some examples:
+
+<img width="647" alt="screen shot 2017-08-08 at 12 53 04 pm" src="https://user-images.githubusercontent.com/71256/29091703-a6302cdc-7c38-11e7-8304-7c0b3bc600cd.png">
+<img width="647" alt="screen shot 2017-08-08 at 12 53 38 pm" src="https://user-images.githubusercontent.com/71256/29091700-a62a6888-7c38-11e7-800b-db911291ca2b.png">
+<img width="647" alt="screen shot 2017-08-08 at 12 53 25 pm" src="https://user-images.githubusercontent.com/71256/29091701-a62ea114-7c38-11e7-826a-2692bedca740.png">
+
+#### Windows note
+
+On Windows the environment variable is set using the `set` command.
+
+```cmd
+set DEBUG=*,-not_this
+```
+
+Note that PowerShell uses different syntax to set environment variables.
+
+```cmd
+$env:DEBUG = "*,-not_this"
+```
+
+Then, run the program to be debugged as usual.
+
+
+## Namespace Colors
+
+Every debug instance has a color generated for it based on its namespace name.
+This helps when visually parsing the debug output to identify which debug instance
+a debug line belongs to.
+
+#### Node.js
+
+In Node.js, colors are enabled when stderr is a TTY. You also _should_ install
+the [`supports-color`](https://npmjs.org/supports-color) module alongside debug,
+otherwise debug will only use a small handful of basic colors.
+
+<img width="521" src="https://user-images.githubusercontent.com/71256/29092181-47f6a9e6-7c3a-11e7-9a14-1928d8a711cd.png">
+
+#### Web Browser
+
+Colors are also enabled on "Web Inspectors" that understand the `%c` formatting
+option. These are WebKit web inspectors, Firefox ([since version
+31](https://hacks.mozilla.org/2014/05/editable-box-model-multiple-selection-sublime-text-keys-much-more-firefox-developer-tools-episode-31/))
+and the Firebug plugin for Firefox (any version).
+
+<img width="524" src="https://user-images.githubusercontent.com/71256/29092033-b65f9f2e-7c39-11e7-8e32-f6f0d8e865c1.png">
+
+
+## Millisecond diff
+
+When actively developing an application it can be useful to see when the time spent between one `debug()` call and the next. Suppose for example you invoke `debug()` before requesting a resource, and after as well, the "+NNNms" will show you how much time was spent between calls.
+
+<img width="647" src="https://user-images.githubusercontent.com/71256/29091486-fa38524c-7c37-11e7-895f-e7ec8e1039b6.png">
+
+When stdout is not a TTY, `Date#toISOString()` is used, making it more useful for logging the debug information as shown below:
+
+<img width="647" src="https://user-images.githubusercontent.com/71256/29091956-6bd78372-7c39-11e7-8c55-c948396d6edd.png">
+
+
+## Conventions
+
+If you're using this in one or more of your libraries, you _should_ use the name of your library so that developers may toggle debugging as desired without guessing names. If you have more than one debuggers you _should_ prefix them with your library name and use ":" to separate features. For example "bodyParser" from Connect would then be "connect:bodyParser".  If you append a "*" to the end of your name, it will always be enabled regardless of the setting of the DEBUG environment variable.  You can then use it for normal output as well as debug output.
+
+## Wildcards
+
+The `*` character may be used as a wildcard. Suppose for example your library has
+debuggers named "connect:bodyParser", "connect:compress", "connect:session",
+instead of listing all three with
+`DEBUG=connect:bodyParser,connect:compress,connect:session`, you may simply do
+`DEBUG=connect:*`, or to run everything using this module simply use `DEBUG=*`.
+
+You can also exclude specific debuggers by prefixing them with a "-" character.
+For example, `DEBUG=*,-connect:*` would include all debuggers except those
+starting with "connect:".
+
+## Environment Variables
+
+When running through Node.js, you can set a few environment variables that will
+change the behavior of the debug logging:
+
+| Name      | Purpose                                         |
+|-----------|-------------------------------------------------|
+| `DEBUG`   | Enables/disables specific debugging namespaces. |
+| `DEBUG_HIDE_DATE` | Hide date from debug output (non-TTY).  |
+| `DEBUG_COLORS`| Whether or not to use colors in the debug output. |
+| `DEBUG_DEPTH` | Object inspection depth.                    |
+| `DEBUG_SHOW_HIDDEN` | Shows hidden properties on inspected objects. |
+
+
+__Note:__ The environment variables beginning with `DEBUG_` end up being
+converted into an Options object that gets used with `%o`/`%O` formatters.
+See the Node.js documentation for
+[`util.inspect()`](https://nodejs.org/api/util.html#util_util_inspect_object_options)
+for the complete list.
+
+## Formatters
+
+Debug uses [printf-style](https://wikipedia.org/wiki/Printf_format_string) formatting.
+Below are the officially supported formatters:
+
+| Formatter | Representation |
+|-----------|----------------|
+| `%O`      | Pretty-print an Object on multiple lines. |
+| `%o`      | Pretty-print an Object all on a single line. |
+| `%s`      | String. |
+| `%d`      | Number (both integer and float). |
+| `%j`      | JSON. Replaced with the string '[Circular]' if the argument contains circular references. |
+| `%%`      | Single percent sign ('%'). This does not consume an argument. |
+
+
+### Custom formatters
+
+You can add custom formatters by extending the `debug.formatters` object.
+For example, if you wanted to add support for rendering a Buffer as hex with
+`%h`, you could do something like:
+
+```js
+const createDebug = require('debug')
+createDebug.formatters.h = (v) => {
+  return v.toString('hex')
+}
+
+// …elsewhere
+const debug = createDebug('foo')
+debug('this is hex: %h', new Buffer('hello world'))
+//   foo this is hex: 68656c6c6f20776f726c6421 +0ms
+```
+
+
+## Browser Support
+
+You can build a browser-ready script using [browserify](https://github.com/substack/node-browserify),
+or just use the [browserify-as-a-service](https://wzrd.in/) [build](https://wzrd.in/standalone/debug@latest),
+if you don't want to build it yourself.
+
+Debug's enable state is currently persisted by `localStorage`.
+Consider the situation shown below where you have `worker:a` and `worker:b`,
+and wish to debug both. You can enable this using `localStorage.debug`:
+
+```js
+localStorage.debug = 'worker:*'
+```
+
+And then refresh the page.
+
+```js
+a = debug('worker:a');
+b = debug('worker:b');
+
+setInterval(function(){
+  a('doing some work');
+}, 1000);
+
+setInterval(function(){
+  b('doing some work');
+}, 1200);
+```
+
+
+## Output streams
+
+  By default `debug` will log to stderr, however this can be configured per-namespace by overriding the `log` method:
+
+Example [_stdout.js_](./examples/node/stdout.js):
+
+```js
+var debug = require('debug');
+var error = debug('app:error');
+
+// by default stderr is used
+error('goes to stderr!');
+
+var log = debug('app:log');
+// set this namespace to log via console.log
+log.log = console.log.bind(console); // don't forget to bind to console!
+log('goes to stdout');
+error('still goes to stderr!');
+
+// set all output to go via console.info
+// overrides all per-namespace log settings
+debug.log = console.info.bind(console);
+error('now goes to stdout via console.info');
+log('still goes to stdout, but via console.info now');
+```
+
+## Checking whether a debug target is enabled
+
+After you've created a debug instance, you can determine whether or not it is
+enabled by checking the `enabled` property:
+
+```javascript
+const debug = require('debug')('http');
+
+if (debug.enabled) {
+  // do stuff...
+}
+```
+
+You can also manually toggle this property to force the debug instance to be
+enabled or disabled.
+
+
+## Authors
+
+ - TJ Holowaychuk
+ - Nathan Rajlich
+ - Andrew Rhyne
+
+## Backers
+
+Support us with a monthly donation and help us continue our activities. [[Become a backer](https://opencollective.com/debug#backer)]
+
+<a href="https://opencollective.com/debug/backer/0/website" target="_blank"><img src="https://opencollective.com/debug/backer/0/avatar.svg"></a>
+<a href="https://opencollective.com/debug/backer/1/website" target="_blank"><img src="https://opencollective.com/debug/backer/1/avatar.svg"></a>
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+<a href="https://opencollective.com/debug/backer/22/website" target="_blank"><img src="https://opencollective.com/debug/backer/22/avatar.svg"></a>
+<a href="https://opencollective.com/debug/backer/23/website" target="_blank"><img src="https://opencollective.com/debug/backer/23/avatar.svg"></a>
+<a href="https://opencollective.com/debug/backer/24/website" target="_blank"><img src="https://opencollective.com/debug/backer/24/avatar.svg"></a>
+<a href="https://opencollective.com/debug/backer/25/website" target="_blank"><img src="https://opencollective.com/debug/backer/25/avatar.svg"></a>
+<a href="https://opencollective.com/debug/backer/26/website" target="_blank"><img src="https://opencollective.com/debug/backer/26/avatar.svg"></a>
+<a href="https://opencollective.com/debug/backer/27/website" target="_blank"><img src="https://opencollective.com/debug/backer/27/avatar.svg"></a>
+<a href="https://opencollective.com/debug/backer/28/website" target="_blank"><img src="https://opencollective.com/debug/backer/28/avatar.svg"></a>
+<a href="https://opencollective.com/debug/backer/29/website" target="_blank"><img src="https://opencollective.com/debug/backer/29/avatar.svg"></a>
+
+
+## Sponsors
+
+Become a sponsor and get your logo on our README on Github with a link to your site. [[Become a sponsor](https://opencollective.com/debug#sponsor)]
+
+<a href="https://opencollective.com/debug/sponsor/0/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/0/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/1/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/1/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/2/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/2/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/3/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/3/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/4/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/4/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/5/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/5/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/6/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/6/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/7/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/7/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/8/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/8/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/9/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/9/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/10/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/10/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/11/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/11/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/12/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/12/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/13/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/13/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/14/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/14/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/15/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/15/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/16/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/16/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/17/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/17/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/18/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/18/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/19/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/19/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/20/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/20/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/21/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/21/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/22/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/22/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/23/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/23/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/24/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/24/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/25/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/25/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/26/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/26/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/27/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/27/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/28/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/28/avatar.svg"></a>
+<a href="https://opencollective.com/debug/sponsor/29/website" target="_blank"><img src="https://opencollective.com/debug/sponsor/29/avatar.svg"></a>
+
+## License
+
+(The MIT License)
+
+Copyright (c) 2014-2017 TJ Holowaychuk &lt;tj@vision-media.ca&gt;
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@@ -0,0 +1,70 @@
+// Karma configuration
+// Generated on Fri Dec 16 2016 13:09:51 GMT+0000 (UTC)
+
+module.exports = function(config) {
+  config.set({
+
+    // base path that will be used to resolve all patterns (eg. files, exclude)
+    basePath: '',
+
+
+    // frameworks to use
+    // available frameworks: https://npmjs.org/browse/keyword/karma-adapter
+    frameworks: ['mocha', 'chai', 'sinon'],
+
+
+    // list of files / patterns to load in the browser
+    files: [
+      'dist/debug.js',
+      'test/*spec.js'
+    ],
+
+
+    // list of files to exclude
+    exclude: [
+      'src/node.js'
+    ],
+
+
+    // preprocess matching files before serving them to the browser
+    // available preprocessors: https://npmjs.org/browse/keyword/karma-preprocessor
+    preprocessors: {
+    },
+
+    // test results reporter to use
+    // possible values: 'dots', 'progress'
+    // available reporters: https://npmjs.org/browse/keyword/karma-reporter
+    reporters: ['progress'],
+
+
+    // web server port
+    port: 9876,
+
+
+    // enable / disable colors in the output (reporters and logs)
+    colors: true,
+
+
+    // level of logging
+    // possible values: config.LOG_DISABLE || config.LOG_ERROR || config.LOG_WARN || config.LOG_INFO || config.LOG_DEBUG
+    logLevel: config.LOG_INFO,
+
+
+    // enable / disable watching file and executing tests whenever any file changes
+    autoWatch: true,
+
+
+    // start these browsers
+    // available browser launchers: https://npmjs.org/browse/keyword/karma-launcher
+    browsers: ['PhantomJS'],
+
+
+    // Continuous Integration mode
+    // if true, Karma captures browsers, runs the tests and exits
+    singleRun: false,
+
+    // Concurrency level
+    // how many browser should be started simultaneous
+    concurrency: Infinity
+  })
+}
@@ -0,0 +1 @@
+module.exports = require('./src/node');
@@ -0,0 +1,85 @@
+{
+  "_from": "debug@~3.1.0",
+  "_id": "debug@3.1.0",
+  "_inBundle": false,
+  "_integrity": "sha512-OX8XqP7/1a9cqkxYw2yXss15f26NKWBpDXQd0/uK/KPqdQhxbPa994hnzjcE2VqQpDslf55723cKPUOGSmMY3g==",
+  "_location": "/socket.io/debug",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "debug@~3.1.0",
+    "name": "debug",
+    "escapedName": "debug",
+    "rawSpec": "~3.1.0",
+    "saveSpec": null,
+    "fetchSpec": "~3.1.0"
+  },
+  "_requiredBy": [
+    "/socket.io",
+    "/socket.io/engine.io-client",
+    "/socket.io/socket.io-client",
+    "/socket.io/socket.io-parser"
+  ],
+  "_resolved": "https://registry.npmjs.org/debug/-/debug-3.1.0.tgz",
+  "_shasum": "5bb5a0672628b64149566ba16819e61518c67261",
+  "_spec": "debug@~3.1.0",
+  "_where": "/srv/http/mmap_sarrebourg/user/themes/basic/node_modules/socket.io",
+  "author": {
+    "name": "TJ Holowaychuk",
+    "email": "tj@vision-media.ca"
+  },
+  "browser": "./src/browser.js",
+  "bugs": {
+    "url": "https://github.com/visionmedia/debug/issues"
+  },
+  "bundleDependencies": false,
+  "contributors": [
+    {
+      "name": "Nathan Rajlich",
+      "email": "nathan@tootallnate.net",
+      "url": "http://n8.io"
+    },
+    {
+      "name": "Andrew Rhyne",
+      "email": "rhyneandrew@gmail.com"
+    }
+  ],
+  "dependencies": {
+    "ms": "2.0.0"
+  },
+  "deprecated": false,
+  "description": "small debugging utility",
+  "devDependencies": {
+    "browserify": "14.4.0",
+    "chai": "^3.5.0",
+    "concurrently": "^3.1.0",
+    "coveralls": "^2.11.15",
+    "eslint": "^3.12.1",
+    "istanbul": "^0.4.5",
+    "karma": "^1.3.0",
+    "karma-chai": "^0.1.0",
+    "karma-mocha": "^1.3.0",
+    "karma-phantomjs-launcher": "^1.0.2",
+    "karma-sinon": "^1.0.5",
+    "mocha": "^3.2.0",
+    "mocha-lcov-reporter": "^1.2.0",
+    "rimraf": "^2.5.4",
+    "sinon": "^1.17.6",
+    "sinon-chai": "^2.8.0"
+  },
+  "homepage": "https://github.com/visionmedia/debug#readme",
+  "keywords": [
+    "debug",
+    "log",
+    "debugger"
+  ],
+  "license": "MIT",
+  "main": "./src/index.js",
+  "name": "debug",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/visionmedia/debug.git"
+  },
+  "version": "3.1.0"
+}
@@ -0,0 +1,195 @@
+/**
+ * This is the web browser implementation of `debug()`.
+ *
+ * Expose `debug()` as the module.
+ */
+
+exports = module.exports = require('./debug');
+exports.log = log;
+exports.formatArgs = formatArgs;
+exports.save = save;
+exports.load = load;
+exports.useColors = useColors;
+exports.storage = 'undefined' != typeof chrome
+               && 'undefined' != typeof chrome.storage
+                  ? chrome.storage.local
+                  : localstorage();
+
+/**
+ * Colors.
+ */
+
+exports.colors = [
+  '#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC',
+  '#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF',
+  '#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC',
+  '#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF',
+  '#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC',
+  '#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033',
+  '#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366',
+  '#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933',
+  '#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC',
+  '#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF',
+  '#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33'
+];
+
+/**
+ * Currently only WebKit-based Web Inspectors, Firefox >= v31,
+ * and the Firebug extension (any Firefox version) are known
+ * to support "%c" CSS customizations.
+ *
+ * TODO: add a `localStorage` variable to explicitly enable/disable colors
+ */
+
+function useColors() {
+  // NB: In an Electron preload script, document will be defined but not fully
+  // initialized. Since we know we're in Chrome, we'll just detect this case
+  // explicitly
+  if (typeof window !== 'undefined' && window.process && window.process.type === 'renderer') {
+    return true;
+  }
+
+  // Internet Explorer and Edge do not support colors.
+  if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) {
+    return false;
+  }
+
+  // is webkit? http://stackoverflow.com/a/16459606/376773
+  // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632
+  return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||
+    // is firebug? http://stackoverflow.com/a/398120/376773
+    (typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||
+    // is firefox >= v31?
+    // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
+    (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31) ||
+    // double check webkit in userAgent just in case we are in a worker
+    (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/));
+}
+
+/**
+ * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
+ */
+
+exports.formatters.j = function(v) {
+  try {
+    return JSON.stringify(v);
+  } catch (err) {
+    return '[UnexpectedJSONParseError]: ' + err.message;
+  }
+};
+
+
+/**
+ * Colorize log arguments if enabled.
+ *
+ * @api public
+ */
+
+function formatArgs(args) {
+  var useColors = this.useColors;
+
+  args[0] = (useColors ? '%c' : '')
+    + this.namespace
+    + (useColors ? ' %c' : ' ')
+    + args[0]
+    + (useColors ? '%c ' : ' ')
+    + '+' + exports.humanize(this.diff);
+
+  if (!useColors) return;
+
+  var c = 'color: ' + this.color;
+  args.splice(1, 0, c, 'color: inherit')
+
+  // the final "%c" is somewhat tricky, because there could be other
+  // arguments passed either before or after the %c, so we need to
+  // figure out the correct index to insert the CSS into
+  var index = 0;
+  var lastC = 0;
+  args[0].replace(/%[a-zA-Z%]/g, function(match) {
+    if ('%%' === match) return;
+    index++;
+    if ('%c' === match) {
+      // we only are interested in the *last* %c
+      // (the user may have provided their own)
+      lastC = index;
+    }
+  });
+
+  args.splice(lastC, 0, c);
+}
+
+/**
+ * Invokes `console.log()` when available.
+ * No-op when `console.log` is not a "function".
+ *
+ * @api public
+ */
+
+function log() {
+  // this hackery is required for IE8/9, where
+  // the `console.log` function doesn't have 'apply'
+  return 'object' === typeof console
+    && console.log
+    && Function.prototype.apply.call(console.log, console, arguments);
+}
+
+/**
+ * Save `namespaces`.
+ *
+ * @param {String} namespaces
+ * @api private
+ */
+
+function save(namespaces) {
+  try {
+    if (null == namespaces) {
+      exports.storage.removeItem('debug');
+    } else {
+      exports.storage.debug = namespaces;
+    }
+  } catch(e) {}
+}
+
+/**
+ * Load `namespaces`.
+ *
+ * @return {String} returns the previously persisted debug modes
+ * @api private
+ */
+
+function load() {
+  var r;
+  try {
+    r = exports.storage.debug;
+  } catch(e) {}
+
+  // If debug isn't set in LS, and we're in Electron, try to load $DEBUG
+  if (!r && typeof process !== 'undefined' && 'env' in process) {
+    r = process.env.DEBUG;
+  }
+
+  return r;
+}
+
+/**
+ * Enable namespaces listed in `localStorage.debug` initially.
+ */
+
+exports.enable(load());
+
+/**
+ * Localstorage attempts to return the localstorage.
+ *
+ * This is necessary because safari throws
+ * when a user disables cookies/localstorage
+ * and you attempt to access it.
+ *
+ * @return {LocalStorage}
+ * @api private
+ */
+
+function localstorage() {
+  try {
+    return window.localStorage;
+  } catch (e) {}
+}
@@ -0,0 +1,225 @@
+
+/**
+ * This is the common logic for both the Node.js and web browser
+ * implementations of `debug()`.
+ *
+ * Expose `debug()` as the module.
+ */
+
+exports = module.exports = createDebug.debug = createDebug['default'] = createDebug;
+exports.coerce = coerce;
+exports.disable = disable;
+exports.enable = enable;
+exports.enabled = enabled;
+exports.humanize = require('ms');
+
+/**
+ * Active `debug` instances.
+ */
+exports.instances = [];
+
+/**
+ * The currently active debug mode names, and names to skip.
+ */
+
+exports.names = [];
+exports.skips = [];
+
+/**
+ * Map of special "%n" handling functions, for the debug "format" argument.
+ *
+ * Valid key names are a single, lower or upper-case letter, i.e. "n" and "N".
+ */
+
+exports.formatters = {};
+
+/**
+ * Select a color.
+ * @param {String} namespace
+ * @return {Number}
+ * @api private
+ */
+
+function selectColor(namespace) {
+  var hash = 0, i;
+
+  for (i in namespace) {
+    hash  = ((hash << 5) - hash) + namespace.charCodeAt(i);
+    hash |= 0; // Convert to 32bit integer
+  }
+
+  return exports.colors[Math.abs(hash) % exports.colors.length];
+}
+
+/**
+ * Create a debugger with the given `namespace`.
+ *
+ * @param {String} namespace
+ * @return {Function}
+ * @api public
+ */
+
+function createDebug(namespace) {
+
+  var prevTime;
+
+  function debug() {
+    // disabled?
+    if (!debug.enabled) return;
+
+    var self = debug;
+
+    // set `diff` timestamp
+    var curr = +new Date();
+    var ms = curr - (prevTime || curr);
+    self.diff = ms;
+    self.prev = prevTime;
+    self.curr = curr;
+    prevTime = curr;
+
+    // turn the `arguments` into a proper Array
+    var args = new Array(arguments.length);
+    for (var i = 0; i < args.length; i++) {
+      args[i] = arguments[i];
+    }
+
+    args[0] = exports.coerce(args[0]);
+
+    if ('string' !== typeof args[0]) {
+      // anything else let's inspect with %O
+      args.unshift('%O');
+    }
+
+    // apply any `formatters` transformations
+    var index = 0;
+    args[0] = args[0].replace(/%([a-zA-Z%])/g, function(match, format) {
+      // if we encounter an escaped % then don't increase the array index
+      if (match === '%%') return match;
+      index++;
+      var formatter = exports.formatters[format];
+      if ('function' === typeof formatter) {
+        var val = args[index];
+        match = formatter.call(self, val);
+
+        // now we need to remove `args[index]` since it's inlined in the `format`
+        args.splice(index, 1);
+        index--;
+      }
+      return match;
+    });
+
+    // apply env-specific formatting (colors, etc.)
+    exports.formatArgs.call(self, args);
+
+    var logFn = debug.log || exports.log || console.log.bind(console);
+    logFn.apply(self, args);
+  }
+
+  debug.namespace = namespace;
+  debug.enabled = exports.enabled(namespace);
+  debug.useColors = exports.useColors();
+  debug.color = selectColor(namespace);
+  debug.destroy = destroy;
+
+  // env-specific initialization logic for debug instances
+  if ('function' === typeof exports.init) {
+    exports.init(debug);
+  }
+
+  exports.instances.push(debug);
+
+  return debug;
+}
+
+function destroy () {
+  var index = exports.instances.indexOf(this);
+  if (index !== -1) {
+    exports.instances.splice(index, 1);
+    return true;
+  } else {
+    return false;
+  }
+}
+
+/**
+ * Enables a debug mode by namespaces. This can include modes
+ * separated by a colon and wildcards.
+ *
+ * @param {String} namespaces
+ * @api public
+ */
+
+function enable(namespaces) {
+  exports.save(namespaces);
+
+  exports.names = [];
+  exports.skips = [];
+
+  var i;
+  var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/);
+  var len = split.length;
+
+  for (i = 0; i < len; i++) {
+    if (!split[i]) continue; // ignore empty strings
+    namespaces = split[i].replace(/\*/g, '.*?');
+    if (namespaces[0] === '-') {
+      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));
+    } else {
+      exports.names.push(new RegExp('^' + namespaces + '$'));
+    }
+  }
+
+  for (i = 0; i < exports.instances.length; i++) {
+    var instance = exports.instances[i];
+    instance.enabled = exports.enabled(instance.namespace);
+  }
+}
+
+/**
+ * Disable debug output.
+ *
+ * @api public
+ */
+
+function disable() {
+  exports.enable('');
+}
+
+/**
+ * Returns true if the given mode name is enabled, false otherwise.
+ *
+ * @param {String} name
+ * @return {Boolean}
+ * @api public
+ */
+
+function enabled(name) {
+  if (name[name.length - 1] === '*') {
+    return true;
+  }
+  var i, len;
+  for (i = 0, len = exports.skips.length; i < len; i++) {
+    if (exports.skips[i].test(name)) {
+      return false;
+    }
+  }
+  for (i = 0, len = exports.names.length; i < len; i++) {
+    if (exports.names[i].test(name)) {
+      return true;
+    }
+  }
+  return false;
+}
+
+/**
+ * Coerce `val`.
+ *
+ * @param {Mixed} val
+ * @return {Mixed}
+ * @api private
+ */
+
+function coerce(val) {
+  if (val instanceof Error) return val.stack || val.message;
+  return val;
+}
@@ -0,0 +1,10 @@
+/**
+ * Detect Electron renderer process, which is node, but we should
+ * treat as a browser.
+ */
+
+if (typeof process === 'undefined' || process.type === 'renderer') {
+  module.exports = require('./browser.js');
+} else {
+  module.exports = require('./node.js');
+}
@@ -0,0 +1,186 @@
+/**
+ * Module dependencies.
+ */
+
+var tty = require('tty');
+var util = require('util');
+
+/**
+ * This is the Node.js implementation of `debug()`.
+ *
+ * Expose `debug()` as the module.
+ */
+
+exports = module.exports = require('./debug');
+exports.init = init;
+exports.log = log;
+exports.formatArgs = formatArgs;
+exports.save = save;
+exports.load = load;
+exports.useColors = useColors;
+
+/**
+ * Colors.
+ */
+
+exports.colors = [ 6, 2, 3, 4, 5, 1 ];
+
+try {
+  var supportsColor = require('supports-color');
+  if (supportsColor && supportsColor.level >= 2) {
+    exports.colors = [
+      20, 21, 26, 27, 32, 33, 38, 39, 40, 41, 42, 43, 44, 45, 56, 57, 62, 63, 68,
+      69, 74, 75, 76, 77, 78, 79, 80, 81, 92, 93, 98, 99, 112, 113, 128, 129, 134,
+      135, 148, 149, 160, 161, 162, 163, 164, 165, 166, 167, 168, 169, 170, 171,
+      172, 173, 178, 179, 184, 185, 196, 197, 198, 199, 200, 201, 202, 203, 204,
+      205, 206, 207, 208, 209, 214, 215, 220, 221
+    ];
+  }
+} catch (err) {
+  // swallow - we only care if `supports-color` is available; it doesn't have to be.
+}
+
+/**
+ * Build up the default `inspectOpts` object from the environment variables.
+ *
+ *   $ DEBUG_COLORS=no DEBUG_DEPTH=10 DEBUG_SHOW_HIDDEN=enabled node script.js
+ */
+
+exports.inspectOpts = Object.keys(process.env).filter(function (key) {
+  return /^debug_/i.test(key);
+}).reduce(function (obj, key) {
+  // camel-case
+  var prop = key
+    .substring(6)
+    .toLowerCase()
+    .replace(/_([a-z])/g, function (_, k) { return k.toUpperCase() });
+
+  // coerce string value into JS value
+  var val = process.env[key];
+  if (/^(yes|on|true|enabled)$/i.test(val)) val = true;
+  else if (/^(no|off|false|disabled)$/i.test(val)) val = false;
+  else if (val === 'null') val = null;
+  else val = Number(val);
+
+  obj[prop] = val;
+  return obj;
+}, {});
+
+/**
+ * Is stdout a TTY? Colored output is enabled when `true`.
+ */
+
+function useColors() {
+  return 'colors' in exports.inspectOpts
+    ? Boolean(exports.inspectOpts.colors)
+    : tty.isatty(process.stderr.fd);
+}
+
+/**
+ * Map %o to `util.inspect()`, all on a single line.
+ */
+
+exports.formatters.o = function(v) {
+  this.inspectOpts.colors = this.useColors;
+  return util.inspect(v, this.inspectOpts)
+    .split('\n').map(function(str) {
+      return str.trim()
+    }).join(' ');
+};
+
+/**
+ * Map %o to `util.inspect()`, allowing multiple lines if needed.
+ */
+
+exports.formatters.O = function(v) {
+  this.inspectOpts.colors = this.useColors;
+  return util.inspect(v, this.inspectOpts);
+};
+
+/**
+ * Adds ANSI color escape codes if enabled.
+ *
+ * @api public
+ */
+
+function formatArgs(args) {
+  var name = this.namespace;
+  var useColors = this.useColors;
+
+  if (useColors) {
+    var c = this.color;
+    var colorCode = '\u001b[3' + (c < 8 ? c : '8;5;' + c);
+    var prefix = '  ' + colorCode + ';1m' + name + ' ' + '\u001b[0m';
+
+    args[0] = prefix + args[0].split('\n').join('\n' + prefix);
+    args.push(colorCode + 'm+' + exports.humanize(this.diff) + '\u001b[0m');
+  } else {
+    args[0] = getDate() + name + ' ' + args[0];
+  }
+}
+
+function getDate() {
+  if (exports.inspectOpts.hideDate) {
+    return '';
+  } else {
+    return new Date().toISOString() + ' ';
+  }
+}
+
+/**
+ * Invokes `util.format()` with the specified arguments and writes to stderr.
+ */
+
+function log() {
+  return process.stderr.write(util.format.apply(util, arguments) + '\n');
+}
+
+/**
+ * Save `namespaces`.
+ *
+ * @param {String} namespaces
+ * @api private
+ */
+
+function save(namespaces) {
+  if (null == namespaces) {
+    // If you set a process.env field to null or undefined, it gets cast to the
+    // string 'null' or 'undefined'. Just delete instead.
+    delete process.env.DEBUG;
+  } else {
+    process.env.DEBUG = namespaces;
+  }
+}
+
+/**
+ * Load `namespaces`.
+ *
+ * @return {String} returns the previously persisted debug modes
+ * @api private
+ */
+
+function load() {
+  return process.env.DEBUG;
+}
+
+/**
+ * Init logic for `debug` instances.
+ *
+ * Create a new `inspectOpts` object in case `useColors` is set
+ * differently for a particular `debug` instance.
+ */
+
+function init (debug) {
+  debug.inspectOpts = {};
+
+  var keys = Object.keys(exports.inspectOpts);
+  for (var i = 0; i < keys.length; i++) {
+    debug.inspectOpts[keys[i]] = exports.inspectOpts[keys[i]];
+  }
+}
+
+/**
+ * Enable namespaces listed in `process.env.DEBUG` initially.
+ */
+
+exports.enable(load());
@@ -0,0 +1,22 @@
+(The MIT License)
+
+Copyright (c) 2014-2015 Automattic <dev@cloudup.com>
+
+Permission is hereby granted, free of charge, to any person obtaining
+a copy of this software and associated documentation files (the
+'Software'), to deal in the Software without restriction, including
+without limitation the rights to use, copy, modify, merge, publish,
+distribute, sublicense, and/or sell copies of the Software, and to
+permit persons to whom the Software is furnished to do so, subject to
+the following conditions:
+
+The above copyright notice and this permission notice shall be
+included in all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND,
+EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
+MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.
+IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY
+CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT,
+TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE
+SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@@ -0,0 +1,299 @@
+
+# Engine.IO client
+
+[![Build Status](https://travis-ci.org/socketio/engine.io-client.svg?branch=master)](http://travis-ci.org/socketio/engine.io-client)
+[![NPM version](https://badge.fury.io/js/engine.io-client.svg)](http://badge.fury.io/js/engine.io-client)
+
+This is the client for [Engine.IO](http://github.com/socketio/engine.io),
+the implementation of transport-based cross-browser/cross-device
+bi-directional communication layer for [Socket.IO](http://github.com/socketio/socket.io).
+
+## How to use
+
+### Standalone
+
+You can find an `engine.io.js` file in this repository, which is a
+standalone build you can use as follows:
+
+```html
+<script src="/path/to/engine.io.js"></script>
+<script>
+  // eio = Socket
+  var socket = eio('ws://localhost');
+  socket.on('open', function(){
+    socket.on('message', function(data){});
+    socket.on('close', function(){});
+  });
+</script>
+```
+
+### With browserify
+
+Engine.IO is a commonjs module, which means you can include it by using
+`require` on the browser and package using [browserify](http://browserify.org/):
+
+1. install the client package
+
+    ```bash
+    $ npm install engine.io-client
+    ```
+
+1. write your app code
+
+    ```js
+    var socket = require('engine.io-client')('ws://localhost');
+    socket.on('open', function(){
+      socket.on('message', function(data){});
+      socket.on('close', function(){});
+    });
+    ```
+
+1. build your app bundle
+
+    ```bash
+    $ browserify app.js > bundle.js
+    ```
+
+1. include on your page
+
+    ```html
+    <script src="/path/to/bundle.js"></script>
+    ```
+
+### Sending and receiving binary
+
+```html
+<script src="/path/to/engine.io.js"></script>
+<script>
+  var socket = new eio.Socket('ws://localhost/');
+  socket.binaryType = 'blob';
+  socket.on('open', function () {
+    socket.send(new Int8Array(5));
+    socket.on('message', function(blob){});
+    socket.on('close', function(){ });
+  });
+</script>
+```
+
+### Node.JS
+
+Add `engine.io-client` to your `package.json` and then:
+
+```js
+var socket = require('engine.io-client')('ws://localhost');
+socket.on('open', function(){
+  socket.on('message', function(data){});
+  socket.on('close', function(){});
+});
+```
+
+### Node.js with certificates
+```js
+var opts = {
+  key: fs.readFileSync('test/fixtures/client.key'),
+  cert: fs.readFileSync('test/fixtures/client.crt'),
+  ca: fs.readFileSync('test/fixtures/ca.crt')
+};
+
+var socket = require('engine.io-client')('ws://localhost', opts);
+socket.on('open', function(){
+  socket.on('message', function(data){});
+  socket.on('close', function(){});
+});
+```
+
+### Node.js with extraHeaders
+```js
+var opts = {
+  extraHeaders: {
+    'X-Custom-Header-For-My-Project': 'my-secret-access-token',
+    'Cookie': 'user_session=NI2JlCKF90aE0sJZD9ZzujtdsUqNYSBYxzlTsvdSUe35ZzdtVRGqYFr0kdGxbfc5gUOkR9RGp20GVKza; path=/; expires=Tue, 07-Apr-2015 18:18:08 GMT; secure; HttpOnly'
+  }
+};
+
+var socket = require('engine.io-client')('ws://localhost', opts);
+socket.on('open', function(){
+  socket.on('message', function(data){});
+  socket.on('close', function(){});
+});
+```
+
+## Features
+
+- Lightweight
+- Runs on browser and node.js seamlessly
+- Transports are independent of `Engine`
+  - Easy to debug
+  - Easy to unit test
+- Runs inside HTML5 WebWorker
+- Can send and receive binary data
+  - Receives as ArrayBuffer or Blob when in browser, and Buffer or ArrayBuffer
+    in Node
+  - When XHR2 or WebSockets are used, binary is emitted directly. Otherwise
+    binary is encoded into base64 strings, and decoded when binary types are
+    supported.
+  - With browsers that don't support ArrayBuffer, an object { base64: true,
+    data: dataAsBase64String } is emitted on the `message` event.
+
+## API
+
+### Socket
+
+The client class. Mixes in [Emitter](http://github.com/component/emitter).
+Exposed as `eio` in the browser standalone build.
+
+#### Properties
+
+- `protocol` _(Number)_: protocol revision number
+- `binaryType` _(String)_ : can be set to 'arraybuffer' or 'blob' in browsers,
+  and `buffer` or `arraybuffer` in Node. Blob is only used in browser if it's
+  supported.
+
+#### Events
+
+- `open`
+  - Fired upon successful connection.
+- `message`
+  - Fired when data is received from the server.
+  - **Arguments**
+    - `String` | `ArrayBuffer`: utf-8 encoded data or ArrayBuffer containing
+      binary data
+- `close`
+  - Fired upon disconnection. In compliance with the WebSocket API spec, this event may be
+    fired even if the `open` event does not occur (i.e. due to connection error or `close()`).
+- `error`
+  - Fired when an error occurs.
+- `flush`
+  - Fired upon completing a buffer flush
+- `drain`
+  - Fired after `drain` event of transport if writeBuffer is empty
+- `upgradeError`
+  - Fired if an error occurs with a transport we're trying to upgrade to.
+- `upgrade`
+  - Fired upon upgrade success, after the new transport is set
+- `ping`
+  - Fired upon _flushing_ a ping packet (ie: actual packet write out)
+- `pong`
+  - Fired upon receiving a pong packet.
+
+#### Methods
+
+- **constructor**
+    - Initializes the client
+    - **Parameters**
+      - `String` uri
+      - `Object`: optional, options object
+    - **Options**
+      - `agent` (`http.Agent`): `http.Agent` to use, defaults to `false` (NodeJS only)
+      - `upgrade` (`Boolean`): defaults to true, whether the client should try
+      to upgrade the transport from long-polling to something better.
+      - `forceJSONP` (`Boolean`): forces JSONP for polling transport.
+      - `jsonp` (`Boolean`): determines whether to use JSONP when
+        necessary for polling. If disabled (by settings to false) an error will
+        be emitted (saying "No transports available") if no other transports
+        are available. If another transport is available for opening a
+        connection (e.g. WebSocket) that transport
+        will be used instead.
+      - `forceBase64` (`Boolean`): forces base 64 encoding for polling transport even when XHR2 responseType is available and WebSocket even if the used standard supports binary.
+      - `enablesXDR` (`Boolean`): enables XDomainRequest for IE8 to avoid loading bar flashing with click sound. default to `false` because XDomainRequest has a flaw of not sending cookie.
+      - `timestampRequests` (`Boolean`): whether to add the timestamp with each
+        transport request. Note: polling requests are always stamped unless this
+        option is explicitly set to `false` (`false`)
+      - `timestampParam` (`String`): timestamp parameter (`t`)
+      - `policyPort` (`Number`): port the policy server listens on (`843`)
+      - `path` (`String`): path to connect to, default is `/engine.io`
+      - `transports` (`Array`): a list of transports to try (in order).
+      Defaults to `['polling', 'websocket']`. `Engine`
+      always attempts to connect directly with the first one, provided the
+      feature detection test for it passes.
+      - `transportOptions` (`Object`): hash of options, indexed by transport name, overriding the common options for the given transport
+      - `rememberUpgrade` (`Boolean`): defaults to false.
+        If true and if the previous websocket connection to the server succeeded,
+        the connection attempt will bypass the normal upgrade process and will initially
+        try websocket. A connection attempt following a transport error will use the
+        normal upgrade process. It is recommended you turn this on only when using
+        SSL/TLS connections, or if you know that your network does not block websockets.
+      - `pfx` (`String`): Certificate, Private key and CA certificates to use for SSL. Can be used in Node.js client environment to manually specify certificate information.
+      - `key` (`String`): Private key to use for SSL. Can be used in Node.js client environment to manually specify certificate information.
+      - `passphrase` (`String`): A string of passphrase for the private key or pfx. Can be used in Node.js client environment to manually specify certificate information.
+      - `cert` (`String`): Public x509 certificate to use. Can be used in Node.js client environment to manually specify certificate information.
+      - `ca` (`String`|`Array`): An authority certificate or array of authority certificates to check the remote host against.. Can be used in Node.js client environment to manually specify certificate information.
+      - `ciphers` (`String`): A string describing the ciphers to use or exclude. Consult the [cipher format list](http://www.openssl.org/docs/apps/ciphers.html#CIPHER_LIST_FORMAT) for details on the format. Can be used in Node.js client environment to manually specify certificate information.
+      - `rejectUnauthorized` (`Boolean`): If true, the server certificate is verified against the list of supplied CAs. An 'error' event is emitted if verification fails. Verification happens at the connection level, before the HTTP request is sent. Can be used in Node.js client environment to manually specify certificate information.
+      - `perMessageDeflate` (`Object|Boolean`): parameters of the WebSocket permessage-deflate extension
+        (see [ws module](https://github.com/einaros/ws) api docs). Set to `false` to disable. (`true`)
+        - `threshold` (`Number`): data is compressed only if the byte size is above this value. This option is ignored on the browser. (`1024`)
+      - `extraHeaders` (`Object`): Headers that will be passed for each request to the server (via xhr-polling and via websockets). These values then can be used during handshake or for special proxies. Can only be used in Node.js client environment.
+      - `onlyBinaryUpgrades` (`Boolean`): whether transport upgrades should be restricted to transports supporting binary data (`false`)
+      - `forceNode` (`Boolean`): Uses NodeJS implementation for websockets - even if there is a native Browser-Websocket available, which is preferred by default over the NodeJS implementation. (This is useful when using hybrid platforms like nw.js or electron) (`false`, NodeJS only)
+      - `localAddress` (`String`): the local IP address to connect to
+    - **Polling-only options**
+      - `requestTimeout` (`Number`): Timeout for xhr-polling requests in milliseconds (`0`)
+    - **Websocket-only options**
+      - `protocols` (`Array`): a list of subprotocols (see [MDN reference](https://developer.mozilla.org/en-US/docs/Web/API/WebSockets_API/Writing_WebSocket_servers#Subprotocols))
+- `send`
+    - Sends a message to the server
+    - **Parameters**
+      - `String` | `ArrayBuffer` | `ArrayBufferView` | `Blob`: data to send
+      - `Object`: optional, options object
+      - `Function`: optional, callback upon `drain`
+    - **Options**
+      - `compress` (`Boolean`): whether to compress sending data. This option is ignored and forced to be `true` on the browser. (`true`)
+- `close`
+    - Disconnects the client.
+
+### Transport
+
+The transport class. Private. _Inherits from EventEmitter_.
+
+#### Events
+
+- `poll`: emitted by polling transports upon starting a new request
+- `pollComplete`: emitted by polling transports upon completing a request
+- `drain`: emitted by polling transports upon a buffer drain
+
+## Tests
+
+`engine.io-client` is used to test
+[engine](http://github.com/socketio/engine.io). Running the `engine.io`
+test suite ensures the client works and vice-versa.
+
+Browser tests are run using [zuul](https://github.com/defunctzombie/zuul). You can
+run the tests locally using the following command.
+
+```
+./node_modules/.bin/zuul --local 8080 -- test/index.js
+```
+
+Additionally, `engine.io-client` has a standalone test suite you can run
+with `make test` which will run node.js and browser tests. You must have zuul setup with
+a saucelabs account.
+
+## Support
+
+The support channels for `engine.io-client` are the same as `socket.io`:
+  - irc.freenode.net **#socket.io**
+  - [Google Groups](http://groups.google.com/group/socket_io)
+  - [Website](http://socket.io)
+
+## Development
+
+To contribute patches, run tests or benchmarks, make sure to clone the
+repository:
+
+```bash
+git clone git://github.com/socketio/engine.io-client.git
+```
+
+Then:
+
+```bash
+cd engine.io-client
+npm install
+```
+
+See the `Tests` section above for how to run tests before submitting any patches.
+
+## License
+
+MIT - Copyright (c) 2014 Automattic, Inc.
@@ -0,0 +1,10 @@
+
+module.exports = require('./socket');
+
+/**
+ * Exports parser
+ *
+ * @api public
+ *
+ */
+module.exports.parser = require('engine.io-parser');
@@ -0,0 +1,743 @@
+/**
+ * Module dependencies.
+ */
+
+var transports = require('./transports/index');
+var Emitter = require('component-emitter');
+var debug = require('debug')('engine.io-client:socket');
+var index = require('indexof');
+var parser = require('engine.io-parser');
+var parseuri = require('parseuri');
+var parseqs = require('parseqs');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Socket;
+
+/**
+ * Socket constructor.
+ *
+ * @param {String|Object} uri or options
+ * @param {Object} options
+ * @api public
+ */
+
+function Socket (uri, opts) {
+  if (!(this instanceof Socket)) return new Socket(uri, opts);
+
+  opts = opts || {};
+
+  if (uri && 'object' === typeof uri) {
+    opts = uri;
+    uri = null;
+  }
+
+  if (uri) {
+    uri = parseuri(uri);
+    opts.hostname = uri.host;
+    opts.secure = uri.protocol === 'https' || uri.protocol === 'wss';
+    opts.port = uri.port;
+    if (uri.query) opts.query = uri.query;
+  } else if (opts.host) {
+    opts.hostname = parseuri(opts.host).host;
+  }
+
+  this.secure = null != opts.secure ? opts.secure
+    : (global.location && 'https:' === location.protocol);
+
+  if (opts.hostname && !opts.port) {
+    // if no port is specified manually, use the protocol default
+    opts.port = this.secure ? '443' : '80';
+  }
+
+  this.agent = opts.agent || false;
+  this.hostname = opts.hostname ||
+    (global.location ? location.hostname : 'localhost');
+  this.port = opts.port || (global.location && location.port
+      ? location.port
+      : (this.secure ? 443 : 80));
+  this.query = opts.query || {};
+  if ('string' === typeof this.query) this.query = parseqs.decode(this.query);
+  this.upgrade = false !== opts.upgrade;
+  this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
+  this.forceJSONP = !!opts.forceJSONP;
+  this.jsonp = false !== opts.jsonp;
+  this.forceBase64 = !!opts.forceBase64;
+  this.enablesXDR = !!opts.enablesXDR;
+  this.timestampParam = opts.timestampParam || 't';
+  this.timestampRequests = opts.timestampRequests;
+  this.transports = opts.transports || ['polling', 'websocket'];
+  this.transportOptions = opts.transportOptions || {};
+  this.readyState = '';
+  this.writeBuffer = [];
+  this.prevBufferLen = 0;
+  this.policyPort = opts.policyPort || 843;
+  this.rememberUpgrade = opts.rememberUpgrade || false;
+  this.binaryType = null;
+  this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
+  this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false;
+
+  if (true === this.perMessageDeflate) this.perMessageDeflate = {};
+  if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) {
+    this.perMessageDeflate.threshold = 1024;
+  }
+
+  // SSL options for Node.js client
+  this.pfx = opts.pfx || null;
+  this.key = opts.key || null;
+  this.passphrase = opts.passphrase || null;
+  this.cert = opts.cert || null;
+  this.ca = opts.ca || null;
+  this.ciphers = opts.ciphers || null;
+  this.rejectUnauthorized = opts.rejectUnauthorized === undefined ? true : opts.rejectUnauthorized;
+  this.forceNode = !!opts.forceNode;
+
+  // other options for Node.js client
+  var freeGlobal = typeof global === 'object' && global;
+  if (freeGlobal.global === freeGlobal) {
+    if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {
+      this.extraHeaders = opts.extraHeaders;
+    }
+
+    if (opts.localAddress) {
+      this.localAddress = opts.localAddress;
+    }
+  }
+
+  // set on handshake
+  this.id = null;
+  this.upgrades = null;
+  this.pingInterval = null;
+  this.pingTimeout = null;
+
+  // set on heartbeat
+  this.pingIntervalTimer = null;
+  this.pingTimeoutTimer = null;
+
+  this.open();
+}
+
+Socket.priorWebsocketSuccess = false;
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Socket.prototype);
+
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+Socket.protocol = parser.protocol; // this is an int
+
+/**
+ * Expose deps for legacy compatibility
+ * and standalone browser access.
+ */
+
+Socket.Socket = Socket;
+Socket.Transport = require('./transport');
+Socket.transports = require('./transports/index');
+Socket.parser = require('engine.io-parser');
+
+/**
+ * Creates transport of the given type.
+ *
+ * @param {String} transport name
+ * @return {Transport}
+ * @api private
+ */
+
+Socket.prototype.createTransport = function (name) {
+  debug('creating transport "%s"', name);
+  var query = clone(this.query);
+
+  // append engine.io protocol identifier
+  query.EIO = parser.protocol;
+
+  // transport name
+  query.transport = name;
+
+  // per-transport options
+  var options = this.transportOptions[name] || {};
+
+  // session id if we already have one
+  if (this.id) query.sid = this.id;
+
+  var transport = new transports[name]({
+    query: query,
+    socket: this,
+    agent: options.agent || this.agent,
+    hostname: options.hostname || this.hostname,
+    port: options.port || this.port,
+    secure: options.secure || this.secure,
+    path: options.path || this.path,
+    forceJSONP: options.forceJSONP || this.forceJSONP,
+    jsonp: options.jsonp || this.jsonp,
+    forceBase64: options.forceBase64 || this.forceBase64,
+    enablesXDR: options.enablesXDR || this.enablesXDR,
+    timestampRequests: options.timestampRequests || this.timestampRequests,
+    timestampParam: options.timestampParam || this.timestampParam,
+    policyPort: options.policyPort || this.policyPort,
+    pfx: options.pfx || this.pfx,
+    key: options.key || this.key,
+    passphrase: options.passphrase || this.passphrase,
+    cert: options.cert || this.cert,
+    ca: options.ca || this.ca,
+    ciphers: options.ciphers || this.ciphers,
+    rejectUnauthorized: options.rejectUnauthorized || this.rejectUnauthorized,
+    perMessageDeflate: options.perMessageDeflate || this.perMessageDeflate,
+    extraHeaders: options.extraHeaders || this.extraHeaders,
+    forceNode: options.forceNode || this.forceNode,
+    localAddress: options.localAddress || this.localAddress,
+    requestTimeout: options.requestTimeout || this.requestTimeout,
+    protocols: options.protocols || void (0)
+  });
+
+  return transport;
+};
+
+function clone (obj) {
+  var o = {};
+  for (var i in obj) {
+    if (obj.hasOwnProperty(i)) {
+      o[i] = obj[i];
+    }
+  }
+  return o;
+}
+
+/**
+ * Initializes transport to use and starts probe.
+ *
+ * @api private
+ */
+Socket.prototype.open = function () {
+  var transport;
+  if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') !== -1) {
+    transport = 'websocket';
+  } else if (0 === this.transports.length) {
+    // Emit error on next tick so it can be listened to
+    var self = this;
+    setTimeout(function () {
+      self.emit('error', 'No transports available');
+    }, 0);
+    return;
+  } else {
+    transport = this.transports[0];
+  }
+  this.readyState = 'opening';
+
+  // Retry with the next transport if the transport is disabled (jsonp: false)
+  try {
+    transport = this.createTransport(transport);
+  } catch (e) {
+    this.transports.shift();
+    this.open();
+    return;
+  }
+
+  transport.open();
+  this.setTransport(transport);
+};
+
+/**
+ * Sets the current transport. Disables the existing one (if any).
+ *
+ * @api private
+ */
+
+Socket.prototype.setTransport = function (transport) {
+  debug('setting transport %s', transport.name);
+  var self = this;
+
+  if (this.transport) {
+    debug('clearing existing transport %s', this.transport.name);
+    this.transport.removeAllListeners();
+  }
+
+  // set up transport
+  this.transport = transport;
+
+  // set up transport listeners
+  transport
+  .on('drain', function () {
+    self.onDrain();
+  })
+  .on('packet', function (packet) {
+    self.onPacket(packet);
+  })
+  .on('error', function (e) {
+    self.onError(e);
+  })
+  .on('close', function () {
+    self.onClose('transport close');
+  });
+};
+
+/**
+ * Probes a transport.
+ *
+ * @param {String} transport name
+ * @api private
+ */
+
+Socket.prototype.probe = function (name) {
+  debug('probing transport "%s"', name);
+  var transport = this.createTransport(name, { probe: 1 });
+  var failed = false;
+  var self = this;
+
+  Socket.priorWebsocketSuccess = false;
+
+  function onTransportOpen () {
+    if (self.onlyBinaryUpgrades) {
+      var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;
+      failed = failed || upgradeLosesBinary;
+    }
+    if (failed) return;
+
+    debug('probe transport "%s" opened', name);
+    transport.send([{ type: 'ping', data: 'probe' }]);
+    transport.once('packet', function (msg) {
+      if (failed) return;
+      if ('pong' === msg.type && 'probe' === msg.data) {
+        debug('probe transport "%s" pong', name);
+        self.upgrading = true;
+        self.emit('upgrading', transport);
+        if (!transport) return;
+        Socket.priorWebsocketSuccess = 'websocket' === transport.name;
+
+        debug('pausing current transport "%s"', self.transport.name);
+        self.transport.pause(function () {
+          if (failed) return;
+          if ('closed' === self.readyState) return;
+          debug('changing transport and sending upgrade packet');
+
+          cleanup();
+
+          self.setTransport(transport);
+          transport.send([{ type: 'upgrade' }]);
+          self.emit('upgrade', transport);
+          transport = null;
+          self.upgrading = false;
+          self.flush();
+        });
+      } else {
+        debug('probe transport "%s" failed', name);
+        var err = new Error('probe error');
+        err.transport = transport.name;
+        self.emit('upgradeError', err);
+      }
+    });
+  }
+
+  function freezeTransport () {
+    if (failed) return;
+
+    // Any callback called by transport should be ignored since now
+    failed = true;
+
+    cleanup();
+
+    transport.close();
+    transport = null;
+  }
+
+  // Handle any error that happens while probing
+  function onerror (err) {
+    var error = new Error('probe error: ' + err);
+    error.transport = transport.name;
+
+    freezeTransport();
+
+    debug('probe transport "%s" failed because of error: %s', name, err);
+
+    self.emit('upgradeError', error);
+  }
+
+  function onTransportClose () {
+    onerror('transport closed');
+  }
+
+  // When the socket is closed while we're probing
+  function onclose () {
+    onerror('socket closed');
+  }
+
+  // When the socket is upgraded while we're probing
+  function onupgrade (to) {
+    if (transport && to.name !== transport.name) {
+      debug('"%s" works - aborting "%s"', to.name, transport.name);
+      freezeTransport();
+    }
+  }
+
+  // Remove all listeners on the transport and on self
+  function cleanup () {
+    transport.removeListener('open', onTransportOpen);
+    transport.removeListener('error', onerror);
+    transport.removeListener('close', onTransportClose);
+    self.removeListener('close', onclose);
+    self.removeListener('upgrading', onupgrade);
+  }
+
+  transport.once('open', onTransportOpen);
+  transport.once('error', onerror);
+  transport.once('close', onTransportClose);
+
+  this.once('close', onclose);
+  this.once('upgrading', onupgrade);
+
+  transport.open();
+};
+
+/**
+ * Called when connection is deemed open.
+ *
+ * @api public
+ */
+
+Socket.prototype.onOpen = function () {
+  debug('socket open');
+  this.readyState = 'open';
+  Socket.priorWebsocketSuccess = 'websocket' === this.transport.name;
+  this.emit('open');
+  this.flush();
+
+  // we check for `readyState` in case an `open`
+  // listener already closed the socket
+  if ('open' === this.readyState && this.upgrade && this.transport.pause) {
+    debug('starting upgrade probes');
+    for (var i = 0, l = this.upgrades.length; i < l; i++) {
+      this.probe(this.upgrades[i]);
+    }
+  }
+};
+
+/**
+ * Handles a packet.
+ *
+ * @api private
+ */
+
+Socket.prototype.onPacket = function (packet) {
+  if ('opening' === this.readyState || 'open' === this.readyState ||
+      'closing' === this.readyState) {
+    debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
+
+    this.emit('packet', packet);
+
+    // Socket is live - any packet counts
+    this.emit('heartbeat');
+
+    switch (packet.type) {
+      case 'open':
+        this.onHandshake(JSON.parse(packet.data));
+        break;
+
+      case 'pong':
+        this.setPing();
+        this.emit('pong');
+        break;
+
+      case 'error':
+        var err = new Error('server error');
+        err.code = packet.data;
+        this.onError(err);
+        break;
+
+      case 'message':
+        this.emit('data', packet.data);
+        this.emit('message', packet.data);
+        break;
+    }
+  } else {
+    debug('packet received with socket readyState "%s"', this.readyState);
+  }
+};
+
+/**
+ * Called upon handshake completion.
+ *
+ * @param {Object} handshake obj
+ * @api private
+ */
+
+Socket.prototype.onHandshake = function (data) {
+  this.emit('handshake', data);
+  this.id = data.sid;
+  this.transport.query.sid = data.sid;
+  this.upgrades = this.filterUpgrades(data.upgrades);
+  this.pingInterval = data.pingInterval;
+  this.pingTimeout = data.pingTimeout;
+  this.onOpen();
+  // In case open handler closes socket
+  if ('closed' === this.readyState) return;
+  this.setPing();
+
+  // Prolong liveness of socket on heartbeat
+  this.removeListener('heartbeat', this.onHeartbeat);
+  this.on('heartbeat', this.onHeartbeat);
+};
+
+/**
+ * Resets ping timeout.
+ *
+ * @api private
+ */
+
+Socket.prototype.onHeartbeat = function (timeout) {
+  clearTimeout(this.pingTimeoutTimer);
+  var self = this;
+  self.pingTimeoutTimer = setTimeout(function () {
+    if ('closed' === self.readyState) return;
+    self.onClose('ping timeout');
+  }, timeout || (self.pingInterval + self.pingTimeout));
+};
+
+/**
+ * Pings server every `this.pingInterval` and expects response
+ * within `this.pingTimeout` or closes connection.
+ *
+ * @api private
+ */
+
+Socket.prototype.setPing = function () {
+  var self = this;
+  clearTimeout(self.pingIntervalTimer);
+  self.pingIntervalTimer = setTimeout(function () {
+    debug('writing ping packet - expecting pong within %sms', self.pingTimeout);
+    self.ping();
+    self.onHeartbeat(self.pingTimeout);
+  }, self.pingInterval);
+};
+
+/**
+* Sends a ping packet.
+*
+* @api private
+*/
+
+Socket.prototype.ping = function () {
+  var self = this;
+  this.sendPacket('ping', function () {
+    self.emit('ping');
+  });
+};
+
+/**
+ * Called on `drain` event
+ *
+ * @api private
+ */
+
+Socket.prototype.onDrain = function () {
+  this.writeBuffer.splice(0, this.prevBufferLen);
+
+  // setting prevBufferLen = 0 is very important
+  // for example, when upgrading, upgrade packet is sent over,
+  // and a nonzero prevBufferLen could cause problems on `drain`
+  this.prevBufferLen = 0;
+
+  if (0 === this.writeBuffer.length) {
+    this.emit('drain');
+  } else {
+    this.flush();
+  }
+};
+
+/**
+ * Flush write buffers.
+ *
+ * @api private
+ */
+
+Socket.prototype.flush = function () {
+  if ('closed' !== this.readyState && this.transport.writable &&
+    !this.upgrading && this.writeBuffer.length) {
+    debug('flushing %d packets in socket', this.writeBuffer.length);
+    this.transport.send(this.writeBuffer);
+    // keep track of current length of writeBuffer
+    // splice writeBuffer and callbackBuffer on `drain`
+    this.prevBufferLen = this.writeBuffer.length;
+    this.emit('flush');
+  }
+};
+
+/**
+ * Sends a message.
+ *
+ * @param {String} message.
+ * @param {Function} callback function.
+ * @param {Object} options.
+ * @return {Socket} for chaining.
+ * @api public
+ */
+
+Socket.prototype.write =
+Socket.prototype.send = function (msg, options, fn) {
+  this.sendPacket('message', msg, options, fn);
+  return this;
+};
+
+/**
+ * Sends a packet.
+ *
+ * @param {String} packet type.
+ * @param {String} data.
+ * @param {Object} options.
+ * @param {Function} callback function.
+ * @api private
+ */
+
+Socket.prototype.sendPacket = function (type, data, options, fn) {
+  if ('function' === typeof data) {
+    fn = data;
+    data = undefined;
+  }
+
+  if ('function' === typeof options) {
+    fn = options;
+    options = null;
+  }
+
+  if ('closing' === this.readyState || 'closed' === this.readyState) {
+    return;
+  }
+
+  options = options || {};
+  options.compress = false !== options.compress;
+
+  var packet = {
+    type: type,
+    data: data,
+    options: options
+  };
+  this.emit('packetCreate', packet);
+  this.writeBuffer.push(packet);
+  if (fn) this.once('flush', fn);
+  this.flush();
+};
+
+/**
+ * Closes the connection.
+ *
+ * @api private
+ */
+
+Socket.prototype.close = function () {
+  if ('opening' === this.readyState || 'open' === this.readyState) {
+    this.readyState = 'closing';
+
+    var self = this;
+
+    if (this.writeBuffer.length) {
+      this.once('drain', function () {
+        if (this.upgrading) {
+          waitForUpgrade();
+        } else {
+          close();
+        }
+      });
+    } else if (this.upgrading) {
+      waitForUpgrade();
+    } else {
+      close();
+    }
+  }
+
+  function close () {
+    self.onClose('forced close');
+    debug('socket closing - telling transport to close');
+    self.transport.close();
+  }
+
+  function cleanupAndClose () {
+    self.removeListener('upgrade', cleanupAndClose);
+    self.removeListener('upgradeError', cleanupAndClose);
+    close();
+  }
+
+  function waitForUpgrade () {
+    // wait for upgrade to finish since we can't send packets while pausing a transport
+    self.once('upgrade', cleanupAndClose);
+    self.once('upgradeError', cleanupAndClose);
+  }
+
+  return this;
+};
+
+/**
+ * Called upon transport error
+ *
+ * @api private
+ */
+
+Socket.prototype.onError = function (err) {
+  debug('socket error %j', err);
+  Socket.priorWebsocketSuccess = false;
+  this.emit('error', err);
+  this.onClose('transport error', err);
+};
+
+/**
+ * Called upon transport close.
+ *
+ * @api private
+ */
+
+Socket.prototype.onClose = function (reason, desc) {
+  if ('opening' === this.readyState || 'open' === this.readyState || 'closing' === this.readyState) {
+    debug('socket close with reason: "%s"', reason);
+    var self = this;
+
+    // clear timers
+    clearTimeout(this.pingIntervalTimer);
+    clearTimeout(this.pingTimeoutTimer);
+
+    // stop event from firing again for transport
+    this.transport.removeAllListeners('close');
+
+    // ensure transport won't stay open
+    this.transport.close();
+
+    // ignore further transport communication
+    this.transport.removeAllListeners();
+
+    // set ready state
+    this.readyState = 'closed';
+
+    // clear session id
+    this.id = null;
+
+    // emit close event
+    this.emit('close', reason, desc);
+
+    // clean buffers after, so users can still
+    // grab the buffers on `close` event
+    self.writeBuffer = [];
+    self.prevBufferLen = 0;
+  }
+};
+
+/**
+ * Filters upgrades, returning only those matching client transports.
+ *
+ * @param {Array} server upgrades
+ * @api private
+ *
+ */
+
+Socket.prototype.filterUpgrades = function (upgrades) {
+  var filteredUpgrades = [];
+  for (var i = 0, j = upgrades.length; i < j; i++) {
+    if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);
+  }
+  return filteredUpgrades;
+};
@@ -0,0 +1,157 @@
+/**
+ * Module dependencies.
+ */
+
+var parser = require('engine.io-parser');
+var Emitter = require('component-emitter');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Transport;
+
+/**
+ * Transport abstract constructor.
+ *
+ * @param {Object} options.
+ * @api private
+ */
+
+function Transport (opts) {
+  this.path = opts.path;
+  this.hostname = opts.hostname;
+  this.port = opts.port;
+  this.secure = opts.secure;
+  this.query = opts.query;
+  this.timestampParam = opts.timestampParam;
+  this.timestampRequests = opts.timestampRequests;
+  this.readyState = '';
+  this.agent = opts.agent || false;
+  this.socket = opts.socket;
+  this.enablesXDR = opts.enablesXDR;
+
+  // SSL options for Node.js client
+  this.pfx = opts.pfx;
+  this.key = opts.key;
+  this.passphrase = opts.passphrase;
+  this.cert = opts.cert;
+  this.ca = opts.ca;
+  this.ciphers = opts.ciphers;
+  this.rejectUnauthorized = opts.rejectUnauthorized;
+  this.forceNode = opts.forceNode;
+
+  // other options for Node.js client
+  this.extraHeaders = opts.extraHeaders;
+  this.localAddress = opts.localAddress;
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Transport.prototype);
+
+/**
+ * Emits an error.
+ *
+ * @param {String} str
+ * @return {Transport} for chaining
+ * @api public
+ */
+
+Transport.prototype.onError = function (msg, desc) {
+  var err = new Error(msg);
+  err.type = 'TransportError';
+  err.description = desc;
+  this.emit('error', err);
+  return this;
+};
+
+/**
+ * Opens the transport.
+ *
+ * @api public
+ */
+
+Transport.prototype.open = function () {
+  if ('closed' === this.readyState || '' === this.readyState) {
+    this.readyState = 'opening';
+    this.doOpen();
+  }
+
+  return this;
+};
+
+/**
+ * Closes the transport.
+ *
+ * @api private
+ */
+
+Transport.prototype.close = function () {
+  if ('opening' === this.readyState || 'open' === this.readyState) {
+    this.doClose();
+    this.onClose();
+  }
+
+  return this;
+};
+
+/**
+ * Sends multiple packets.
+ *
+ * @param {Array} packets
+ * @api private
+ */
+
+Transport.prototype.send = function (packets) {
+  if ('open' === this.readyState) {
+    this.write(packets);
+  } else {
+    throw new Error('Transport not open');
+  }
+};
+
+/**
+ * Called upon open
+ *
+ * @api private
+ */
+
+Transport.prototype.onOpen = function () {
+  this.readyState = 'open';
+  this.writable = true;
+  this.emit('open');
+};
+
+/**
+ * Called with data.
+ *
+ * @param {String} data
+ * @api private
+ */
+
+Transport.prototype.onData = function (data) {
+  var packet = parser.decodePacket(data, this.socket.binaryType);
+  this.onPacket(packet);
+};
+
+/**
+ * Called with a decoded packet.
+ */
+
+Transport.prototype.onPacket = function (packet) {
+  this.emit('packet', packet);
+};
+
+/**
+ * Called upon close.
+ *
+ * @api private
+ */
+
+Transport.prototype.onClose = function () {
+  this.readyState = 'closed';
+  this.emit('close');
+};
@@ -0,0 +1,53 @@
+/**
+ * Module dependencies
+ */
+
+var XMLHttpRequest = require('xmlhttprequest-ssl');
+var XHR = require('./polling-xhr');
+var JSONP = require('./polling-jsonp');
+var websocket = require('./websocket');
+
+/**
+ * Export transports.
+ */
+
+exports.polling = polling;
+exports.websocket = websocket;
+
+/**
+ * Polling transport polymorphic constructor.
+ * Decides on xhr vs jsonp based on feature detection.
+ *
+ * @api private
+ */
+
+function polling (opts) {
+  var xhr;
+  var xd = false;
+  var xs = false;
+  var jsonp = false !== opts.jsonp;
+
+  if (global.location) {
+    var isSSL = 'https:' === location.protocol;
+    var port = location.port;
+
+    // some user agents have empty `location.port`
+    if (!port) {
+      port = isSSL ? 443 : 80;
+    }
+
+    xd = opts.hostname !== location.hostname || port !== opts.port;
+    xs = opts.secure !== isSSL;
+  }
+
+  opts.xdomain = xd;
+  opts.xscheme = xs;
+  xhr = new XMLHttpRequest(opts);
+
+  if ('open' in xhr && !opts.forceJSONP) {
+    return new XHR(opts);
+  } else {
+    if (!jsonp) throw new Error('JSONP disabled');
+    return new JSONP(opts);
+  }
+}
@@ -0,0 +1,231 @@
+
+/**
+ * Module requirements.
+ */
+
+var Polling = require('./polling');
+var inherit = require('component-inherit');
+
+/**
+ * Module exports.
+ */
+
+module.exports = JSONPPolling;
+
+/**
+ * Cached regular expressions.
+ */
+
+var rNewline = /\n/g;
+var rEscapedNewline = /\\n/g;
+
+/**
+ * Global JSONP callbacks.
+ */
+
+var callbacks;
+
+/**
+ * Noop.
+ */
+
+function empty () { }
+
+/**
+ * JSONP Polling constructor.
+ *
+ * @param {Object} opts.
+ * @api public
+ */
+
+function JSONPPolling (opts) {
+  Polling.call(this, opts);
+
+  this.query = this.query || {};
+
+  // define global callbacks array if not present
+  // we do this here (lazily) to avoid unneeded global pollution
+  if (!callbacks) {
+    // we need to consider multiple engines in the same page
+    if (!global.___eio) global.___eio = [];
+    callbacks = global.___eio;
+  }
+
+  // callback identifier
+  this.index = callbacks.length;
+
+  // add callback to jsonp global
+  var self = this;
+  callbacks.push(function (msg) {
+    self.onData(msg);
+  });
+
+  // append to query string
+  this.query.j = this.index;
+
+  // prevent spurious errors from being emitted when the window is unloaded
+  if (global.document && global.addEventListener) {
+    global.addEventListener('beforeunload', function () {
+      if (self.script) self.script.onerror = empty;
+    }, false);
+  }
+}
+
+/**
+ * Inherits from Polling.
+ */
+
+inherit(JSONPPolling, Polling);
+
+/*
+ * JSONP only supports binary as base64 encoded strings
+ */
+
+JSONPPolling.prototype.supportsBinary = false;
+
+/**
+ * Closes the socket.
+ *
+ * @api private
+ */
+
+JSONPPolling.prototype.doClose = function () {
+  if (this.script) {
+    this.script.parentNode.removeChild(this.script);
+    this.script = null;
+  }
+
+  if (this.form) {
+    this.form.parentNode.removeChild(this.form);
+    this.form = null;
+    this.iframe = null;
+  }
+
+  Polling.prototype.doClose.call(this);
+};
+
+/**
+ * Starts a poll cycle.
+ *
+ * @api private
+ */
+
+JSONPPolling.prototype.doPoll = function () {
+  var self = this;
+  var script = document.createElement('script');
+
+  if (this.script) {
+    this.script.parentNode.removeChild(this.script);
+    this.script = null;
+  }
+
+  script.async = true;
+  script.src = this.uri();
+  script.onerror = function (e) {
+    self.onError('jsonp poll error', e);
+  };
+
+  var insertAt = document.getElementsByTagName('script')[0];
+  if (insertAt) {
+    insertAt.parentNode.insertBefore(script, insertAt);
+  } else {
+    (document.head || document.body).appendChild(script);
+  }
+  this.script = script;
+
+  var isUAgecko = 'undefined' !== typeof navigator && /gecko/i.test(navigator.userAgent);
+
+  if (isUAgecko) {
+    setTimeout(function () {
+      var iframe = document.createElement('iframe');
+      document.body.appendChild(iframe);
+      document.body.removeChild(iframe);
+    }, 100);
+  }
+};
+
+/**
+ * Writes with a hidden iframe.
+ *
+ * @param {String} data to send
+ * @param {Function} called upon flush.
+ * @api private
+ */
+
+JSONPPolling.prototype.doWrite = function (data, fn) {
+  var self = this;
+
+  if (!this.form) {
+    var form = document.createElement('form');
+    var area = document.createElement('textarea');
+    var id = this.iframeId = 'eio_iframe_' + this.index;
+    var iframe;
+
+    form.className = 'socketio';
+    form.style.position = 'absolute';
+    form.style.top = '-1000px';
+    form.style.left = '-1000px';
+    form.target = id;
+    form.method = 'POST';
+    form.setAttribute('accept-charset', 'utf-8');
+    area.name = 'd';
+    form.appendChild(area);
+    document.body.appendChild(form);
+
+    this.form = form;
+    this.area = area;
+  }
+
+  this.form.action = this.uri();
+
+  function complete () {
+    initIframe();
+    fn();
+  }
+
+  function initIframe () {
+    if (self.iframe) {
+      try {
+        self.form.removeChild(self.iframe);
+      } catch (e) {
+        self.onError('jsonp polling iframe removal error', e);
+      }
+    }
+
+    try {
+      // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
+      var html = '<iframe src="javascript:0" name="' + self.iframeId + '">';
+      iframe = document.createElement(html);
+    } catch (e) {
+      iframe = document.createElement('iframe');
+      iframe.name = self.iframeId;
+      iframe.src = 'javascript:0';
+    }
+
+    iframe.id = self.iframeId;
+
+    self.form.appendChild(iframe);
+    self.iframe = iframe;
+  }
+
+  initIframe();
+
+  // escape \n to prevent it from being converted into \r\n by some UAs
+  // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side
+  data = data.replace(rEscapedNewline, '\\\n');
+  this.area.value = data.replace(rNewline, '\\n');
+
+  try {
+    this.form.submit();
+  } catch (e) {}
+
+  if (this.iframe.attachEvent) {
+    this.iframe.onreadystatechange = function () {
+      if (self.iframe.readyState === 'complete') {
+        complete();
+      }
+    };
+  } else {
+    this.iframe.onload = complete;
+  }
+};
@@ -0,0 +1,412 @@
+/**
+ * Module requirements.
+ */
+
+var XMLHttpRequest = require('xmlhttprequest-ssl');
+var Polling = require('./polling');
+var Emitter = require('component-emitter');
+var inherit = require('component-inherit');
+var debug = require('debug')('engine.io-client:polling-xhr');
+
+/**
+ * Module exports.
+ */
+
+module.exports = XHR;
+module.exports.Request = Request;
+
+/**
+ * Empty function
+ */
+
+function empty () {}
+
+/**
+ * XHR Polling constructor.
+ *
+ * @param {Object} opts
+ * @api public
+ */
+
+function XHR (opts) {
+  Polling.call(this, opts);
+  this.requestTimeout = opts.requestTimeout;
+  this.extraHeaders = opts.extraHeaders;
+
+  if (global.location) {
+    var isSSL = 'https:' === location.protocol;
+    var port = location.port;
+
+    // some user agents have empty `location.port`
+    if (!port) {
+      port = isSSL ? 443 : 80;
+    }
+
+    this.xd = opts.hostname !== global.location.hostname ||
+      port !== opts.port;
+    this.xs = opts.secure !== isSSL;
+  }
+}
+
+/**
+ * Inherits from Polling.
+ */
+
+inherit(XHR, Polling);
+
+/**
+ * XHR supports binary
+ */
+
+XHR.prototype.supportsBinary = true;
+
+/**
+ * Creates a request.
+ *
+ * @param {String} method
+ * @api private
+ */
+
+XHR.prototype.request = function (opts) {
+  opts = opts || {};
+  opts.uri = this.uri();
+  opts.xd = this.xd;
+  opts.xs = this.xs;
+  opts.agent = this.agent || false;
+  opts.supportsBinary = this.supportsBinary;
+  opts.enablesXDR = this.enablesXDR;
+
+  // SSL options for Node.js client
+  opts.pfx = this.pfx;
+  opts.key = this.key;
+  opts.passphrase = this.passphrase;
+  opts.cert = this.cert;
+  opts.ca = this.ca;
+  opts.ciphers = this.ciphers;
+  opts.rejectUnauthorized = this.rejectUnauthorized;
+  opts.requestTimeout = this.requestTimeout;
+
+  // other options for Node.js client
+  opts.extraHeaders = this.extraHeaders;
+
+  return new Request(opts);
+};
+
+/**
+ * Sends data.
+ *
+ * @param {String} data to send.
+ * @param {Function} called upon flush.
+ * @api private
+ */
+
+XHR.prototype.doWrite = function (data, fn) {
+  var isBinary = typeof data !== 'string' && data !== undefined;
+  var req = this.request({ method: 'POST', data: data, isBinary: isBinary });
+  var self = this;
+  req.on('success', fn);
+  req.on('error', function (err) {
+    self.onError('xhr post error', err);
+  });
+  this.sendXhr = req;
+};
+
+/**
+ * Starts a poll cycle.
+ *
+ * @api private
+ */
+
+XHR.prototype.doPoll = function () {
+  debug('xhr poll');
+  var req = this.request();
+  var self = this;
+  req.on('data', function (data) {
+    self.onData(data);
+  });
+  req.on('error', function (err) {
+    self.onError('xhr poll error', err);
+  });
+  this.pollXhr = req;
+};
+
+/**
+ * Request constructor
+ *
+ * @param {Object} options
+ * @api public
+ */
+
+function Request (opts) {
+  this.method = opts.method || 'GET';
+  this.uri = opts.uri;
+  this.xd = !!opts.xd;
+  this.xs = !!opts.xs;
+  this.async = false !== opts.async;
+  this.data = undefined !== opts.data ? opts.data : null;
+  this.agent = opts.agent;
+  this.isBinary = opts.isBinary;
+  this.supportsBinary = opts.supportsBinary;
+  this.enablesXDR = opts.enablesXDR;
+  this.requestTimeout = opts.requestTimeout;
+
+  // SSL options for Node.js client
+  this.pfx = opts.pfx;
+  this.key = opts.key;
+  this.passphrase = opts.passphrase;
+  this.cert = opts.cert;
+  this.ca = opts.ca;
+  this.ciphers = opts.ciphers;
+  this.rejectUnauthorized = opts.rejectUnauthorized;
+
+  // other options for Node.js client
+  this.extraHeaders = opts.extraHeaders;
+
+  this.create();
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Request.prototype);
+
+/**
+ * Creates the XHR object and sends the request.
+ *
+ * @api private
+ */
+
+Request.prototype.create = function () {
+  var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };
+
+  // SSL options for Node.js client
+  opts.pfx = this.pfx;
+  opts.key = this.key;
+  opts.passphrase = this.passphrase;
+  opts.cert = this.cert;
+  opts.ca = this.ca;
+  opts.ciphers = this.ciphers;
+  opts.rejectUnauthorized = this.rejectUnauthorized;
+
+  var xhr = this.xhr = new XMLHttpRequest(opts);
+  var self = this;
+
+  try {
+    debug('xhr open %s: %s', this.method, this.uri);
+    xhr.open(this.method, this.uri, this.async);
+    try {
+      if (this.extraHeaders) {
+        xhr.setDisableHeaderCheck && xhr.setDisableHeaderCheck(true);
+        for (var i in this.extraHeaders) {
+          if (this.extraHeaders.hasOwnProperty(i)) {
+            xhr.setRequestHeader(i, this.extraHeaders[i]);
+          }
+        }
+      }
+    } catch (e) {}
+
+    if ('POST' === this.method) {
+      try {
+        if (this.isBinary) {
+          xhr.setRequestHeader('Content-type', 'application/octet-stream');
+        } else {
+          xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');
+        }
+      } catch (e) {}
+    }
+
+    try {
+      xhr.setRequestHeader('Accept', '*/*');
+    } catch (e) {}
+
+    // ie6 check
+    if ('withCredentials' in xhr) {
+      xhr.withCredentials = true;
+    }
+
+    if (this.requestTimeout) {
+      xhr.timeout = this.requestTimeout;
+    }
+
+    if (this.hasXDR()) {
+      xhr.onload = function () {
+        self.onLoad();
+      };
+      xhr.onerror = function () {
+        self.onError(xhr.responseText);
+      };
+    } else {
+      xhr.onreadystatechange = function () {
+        if (xhr.readyState === 2) {
+          try {
+            var contentType = xhr.getResponseHeader('Content-Type');
+            if (self.supportsBinary && contentType === 'application/octet-stream') {
+              xhr.responseType = 'arraybuffer';
+            }
+          } catch (e) {}
+        }
+        if (4 !== xhr.readyState) return;
+        if (200 === xhr.status || 1223 === xhr.status) {
+          self.onLoad();
+        } else {
+          // make sure the `error` event handler that's user-set
+          // does not throw in the same tick and gets caught here
+          setTimeout(function () {
+            self.onError(xhr.status);
+          }, 0);
+        }
+      };
+    }
+
+    debug('xhr data %s', this.data);
+    xhr.send(this.data);
+  } catch (e) {
+    // Need to defer since .create() is called directly fhrom the constructor
+    // and thus the 'error' event can only be only bound *after* this exception
+    // occurs.  Therefore, also, we cannot throw here at all.
+    setTimeout(function () {
+      self.onError(e);
+    }, 0);
+    return;
+  }
+
+  if (global.document) {
+    this.index = Request.requestsCount++;
+    Request.requests[this.index] = this;
+  }
+};
+
+/**
+ * Called upon successful response.
+ *
+ * @api private
+ */
+
+Request.prototype.onSuccess = function () {
+  this.emit('success');
+  this.cleanup();
+};
+
+/**
+ * Called if we have data.
+ *
+ * @api private
+ */
+
+Request.prototype.onData = function (data) {
+  this.emit('data', data);
+  this.onSuccess();
+};
+
+/**
+ * Called upon error.
+ *
+ * @api private
+ */
+
+Request.prototype.onError = function (err) {
+  this.emit('error', err);
+  this.cleanup(true);
+};
+
+/**
+ * Cleans up house.
+ *
+ * @api private
+ */
+
+Request.prototype.cleanup = function (fromError) {
+  if ('undefined' === typeof this.xhr || null === this.xhr) {
+    return;
+  }
+  // xmlhttprequest
+  if (this.hasXDR()) {
+    this.xhr.onload = this.xhr.onerror = empty;
+  } else {
+    this.xhr.onreadystatechange = empty;
+  }
+
+  if (fromError) {
+    try {
+      this.xhr.abort();
+    } catch (e) {}
+  }
+
+  if (global.document) {
+    delete Request.requests[this.index];
+  }
+
+  this.xhr = null;
+};
+
+/**
+ * Called upon load.
+ *
+ * @api private
+ */
+
+Request.prototype.onLoad = function () {
+  var data;
+  try {
+    var contentType;
+    try {
+      contentType = this.xhr.getResponseHeader('Content-Type');
+    } catch (e) {}
+    if (contentType === 'application/octet-stream') {
+      data = this.xhr.response || this.xhr.responseText;
+    } else {
+      data = this.xhr.responseText;
+    }
+  } catch (e) {
+    this.onError(e);
+  }
+  if (null != data) {
+    this.onData(data);
+  }
+};
+
+/**
+ * Check if it has XDomainRequest.
+ *
+ * @api private
+ */
+
+Request.prototype.hasXDR = function () {
+  return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR;
+};
+
+/**
+ * Aborts the request.
+ *
+ * @api public
+ */
+
+Request.prototype.abort = function () {
+  this.cleanup();
+};
+
+/**
+ * Aborts pending requests when unloading the window. This is needed to prevent
+ * memory leaks (e.g. when using IE) and to ensure that no spurious error is
+ * emitted.
+ */
+
+Request.requestsCount = 0;
+Request.requests = {};
+
+if (global.document) {
+  if (global.attachEvent) {
+    global.attachEvent('onunload', unloadHandler);
+  } else if (global.addEventListener) {
+    global.addEventListener('beforeunload', unloadHandler, false);
+  }
+}
+
+function unloadHandler () {
+  for (var i in Request.requests) {
+    if (Request.requests.hasOwnProperty(i)) {
+      Request.requests[i].abort();
+    }
+  }
+}
@@ -0,0 +1,245 @@
+/**
+ * Module dependencies.
+ */
+
+var Transport = require('../transport');
+var parseqs = require('parseqs');
+var parser = require('engine.io-parser');
+var inherit = require('component-inherit');
+var yeast = require('yeast');
+var debug = require('debug')('engine.io-client:polling');
+
+/**
+ * Module exports.
+ */
+
+module.exports = Polling;
+
+/**
+ * Is XHR2 supported?
+ */
+
+var hasXHR2 = (function () {
+  var XMLHttpRequest = require('xmlhttprequest-ssl');
+  var xhr = new XMLHttpRequest({ xdomain: false });
+  return null != xhr.responseType;
+})();
+
+/**
+ * Polling interface.
+ *
+ * @param {Object} opts
+ * @api private
+ */
+
+function Polling (opts) {
+  var forceBase64 = (opts && opts.forceBase64);
+  if (!hasXHR2 || forceBase64) {
+    this.supportsBinary = false;
+  }
+  Transport.call(this, opts);
+}
+
+/**
+ * Inherits from Transport.
+ */
+
+inherit(Polling, Transport);
+
+/**
+ * Transport name.
+ */
+
+Polling.prototype.name = 'polling';
+
+/**
+ * Opens the socket (triggers polling). We write a PING message to determine
+ * when the transport is open.
+ *
+ * @api private
+ */
+
+Polling.prototype.doOpen = function () {
+  this.poll();
+};
+
+/**
+ * Pauses polling.
+ *
+ * @param {Function} callback upon buffers are flushed and transport is paused
+ * @api private
+ */
+
+Polling.prototype.pause = function (onPause) {
+  var self = this;
+
+  this.readyState = 'pausing';
+
+  function pause () {
+    debug('paused');
+    self.readyState = 'paused';
+    onPause();
+  }
+
+  if (this.polling || !this.writable) {
+    var total = 0;
+
+    if (this.polling) {
+      debug('we are currently polling - waiting to pause');
+      total++;
+      this.once('pollComplete', function () {
+        debug('pre-pause polling complete');
+        --total || pause();
+      });
+    }
+
+    if (!this.writable) {
+      debug('we are currently writing - waiting to pause');
+      total++;
+      this.once('drain', function () {
+        debug('pre-pause writing complete');
+        --total || pause();
+      });
+    }
+  } else {
+    pause();
+  }
+};
+
+/**
+ * Starts polling cycle.
+ *
+ * @api public
+ */
+
+Polling.prototype.poll = function () {
+  debug('polling');
+  this.polling = true;
+  this.doPoll();
+  this.emit('poll');
+};
+
+/**
+ * Overloads onData to detect payloads.
+ *
+ * @api private
+ */
+
+Polling.prototype.onData = function (data) {
+  var self = this;
+  debug('polling got data %s', data);
+  var callback = function (packet, index, total) {
+    // if its the first message we consider the transport open
+    if ('opening' === self.readyState) {
+      self.onOpen();
+    }
+
+    // if its a close packet, we close the ongoing requests
+    if ('close' === packet.type) {
+      self.onClose();
+      return false;
+    }
+
+    // otherwise bypass onData and handle the message
+    self.onPacket(packet);
+  };
+
+  // decode payload
+  parser.decodePayload(data, this.socket.binaryType, callback);
+
+  // if an event did not trigger closing
+  if ('closed' !== this.readyState) {
+    // if we got data we're not polling
+    this.polling = false;
+    this.emit('pollComplete');
+
+    if ('open' === this.readyState) {
+      this.poll();
+    } else {
+      debug('ignoring poll - transport state "%s"', this.readyState);
+    }
+  }
+};
+
+/**
+ * For polling, send a close packet.
+ *
+ * @api private
+ */
+
+Polling.prototype.doClose = function () {
+  var self = this;
+
+  function close () {
+    debug('writing close packet');
+    self.write([{ type: 'close' }]);
+  }
+
+  if ('open' === this.readyState) {
+    debug('transport open - closing');
+    close();
+  } else {
+    // in case we're trying to close while
+    // handshaking is in progress (GH-164)
+    debug('transport not open - deferring close');
+    this.once('open', close);
+  }
+};
+
+/**
+ * Writes a packets payload.
+ *
+ * @param {Array} data packets
+ * @param {Function} drain callback
+ * @api private
+ */
+
+Polling.prototype.write = function (packets) {
+  var self = this;
+  this.writable = false;
+  var callbackfn = function () {
+    self.writable = true;
+    self.emit('drain');
+  };
+
+  parser.encodePayload(packets, this.supportsBinary, function (data) {
+    self.doWrite(data, callbackfn);
+  });
+};
+
+/**
+ * Generates uri for connection.
+ *
+ * @api private
+ */
+
+Polling.prototype.uri = function () {
+  var query = this.query || {};
+  var schema = this.secure ? 'https' : 'http';
+  var port = '';
+
+  // cache busting is forced
+  if (false !== this.timestampRequests) {
+    query[this.timestampParam] = yeast();
+  }
+
+  if (!this.supportsBinary && !query.sid) {
+    query.b64 = 1;
+  }
+
+  query = parseqs.encode(query);
+
+  // avoid port if default for schema
+  if (this.port && (('https' === schema && Number(this.port) !== 443) ||
+     ('http' === schema && Number(this.port) !== 80))) {
+    port = ':' + this.port;
+  }
+
+  // prepend ? to query
+  if (query.length) {
+    query = '?' + query;
+  }
+
+  var ipv6 = this.hostname.indexOf(':') !== -1;
+  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;
+};
@@ -0,0 +1,286 @@
+/**
+ * Module dependencies.
+ */
+
+var Transport = require('../transport');
+var parser = require('engine.io-parser');
+var parseqs = require('parseqs');
+var inherit = require('component-inherit');
+var yeast = require('yeast');
+var debug = require('debug')('engine.io-client:websocket');
+var BrowserWebSocket = global.WebSocket || global.MozWebSocket;
+var NodeWebSocket;
+if (typeof window === 'undefined') {
+  try {
+    NodeWebSocket = require('ws');
+  } catch (e) { }
+}
+
+/**
+ * Get either the `WebSocket` or `MozWebSocket` globals
+ * in the browser or try to resolve WebSocket-compatible
+ * interface exposed by `ws` for Node-like environment.
+ */
+
+var WebSocket = BrowserWebSocket;
+if (!WebSocket && typeof window === 'undefined') {
+  WebSocket = NodeWebSocket;
+}
+
+/**
+ * Module exports.
+ */
+
+module.exports = WS;
+
+/**
+ * WebSocket transport constructor.
+ *
+ * @api {Object} connection options
+ * @api public
+ */
+
+function WS (opts) {
+  var forceBase64 = (opts && opts.forceBase64);
+  if (forceBase64) {
+    this.supportsBinary = false;
+  }
+  this.perMessageDeflate = opts.perMessageDeflate;
+  this.usingBrowserWebSocket = BrowserWebSocket && !opts.forceNode;
+  this.protocols = opts.protocols;
+  if (!this.usingBrowserWebSocket) {
+    WebSocket = NodeWebSocket;
+  }
+  Transport.call(this, opts);
+}
+
+/**
+ * Inherits from Transport.
+ */
+
+inherit(WS, Transport);
+
+/**
+ * Transport name.
+ *
+ * @api public
+ */
+
+WS.prototype.name = 'websocket';
+
+/*
+ * WebSockets support binary
+ */
+
+WS.prototype.supportsBinary = true;
+
+/**
+ * Opens socket.
+ *
+ * @api private
+ */
+
+WS.prototype.doOpen = function () {
+  if (!this.check()) {
+    // let probe timeout
+    return;
+  }
+
+  var uri = this.uri();
+  var protocols = this.protocols;
+  var opts = {
+    agent: this.agent,
+    perMessageDeflate: this.perMessageDeflate
+  };
+
+  // SSL options for Node.js client
+  opts.pfx = this.pfx;
+  opts.key = this.key;
+  opts.passphrase = this.passphrase;
+  opts.cert = this.cert;
+  opts.ca = this.ca;
+  opts.ciphers = this.ciphers;
+  opts.rejectUnauthorized = this.rejectUnauthorized;
+  if (this.extraHeaders) {
+    opts.headers = this.extraHeaders;
+  }
+  if (this.localAddress) {
+    opts.localAddress = this.localAddress;
+  }
+
+  try {
+    this.ws = this.usingBrowserWebSocket ? (protocols ? new WebSocket(uri, protocols) : new WebSocket(uri)) : new WebSocket(uri, protocols, opts);
+  } catch (err) {
+    return this.emit('error', err);
+  }
+
+  if (this.ws.binaryType === undefined) {
+    this.supportsBinary = false;
+  }
+
+  if (this.ws.supports && this.ws.supports.binary) {
+    this.supportsBinary = true;
+    this.ws.binaryType = 'nodebuffer';
+  } else {
+    this.ws.binaryType = 'arraybuffer';
+  }
+
+  this.addEventListeners();
+};
+
+/**
+ * Adds event listeners to the socket
+ *
+ * @api private
+ */
+
+WS.prototype.addEventListeners = function () {
+  var self = this;
+
+  this.ws.onopen = function () {
+    self.onOpen();
+  };
+  this.ws.onclose = function () {
+    self.onClose();
+  };
+  this.ws.onmessage = function (ev) {
+    self.onData(ev.data);
+  };
+  this.ws.onerror = function (e) {
+    self.onError('websocket error', e);
+  };
+};
+
+/**
+ * Writes data to socket.
+ *
+ * @param {Array} array of packets.
+ * @api private
+ */
+
+WS.prototype.write = function (packets) {
+  var self = this;
+  this.writable = false;
+
+  // encodePacket efficient as it uses WS framing
+  // no need for encodePayload
+  var total = packets.length;
+  for (var i = 0, l = total; i < l; i++) {
+    (function (packet) {
+      parser.encodePacket(packet, self.supportsBinary, function (data) {
+        if (!self.usingBrowserWebSocket) {
+          // always create a new object (GH-437)
+          var opts = {};
+          if (packet.options) {
+            opts.compress = packet.options.compress;
+          }
+
+          if (self.perMessageDeflate) {
+            var len = 'string' === typeof data ? global.Buffer.byteLength(data) : data.length;
+            if (len < self.perMessageDeflate.threshold) {
+              opts.compress = false;
+            }
+          }
+        }
+
+        // Sometimes the websocket has already been closed but the browser didn't
+        // have a chance of informing us about it yet, in that case send will
+        // throw an error
+        try {
+          if (self.usingBrowserWebSocket) {
+            // TypeError is thrown when passing the second argument on Safari
+            self.ws.send(data);
+          } else {
+            self.ws.send(data, opts);
+          }
+        } catch (e) {
+          debug('websocket closed before onclose event');
+        }
+
+        --total || done();
+      });
+    })(packets[i]);
+  }
+
+  function done () {
+    self.emit('flush');
+
+    // fake drain
+    // defer to next tick to allow Socket to clear writeBuffer
+    setTimeout(function () {
+      self.writable = true;
+      self.emit('drain');
+    }, 0);
+  }
+};
+
+/**
+ * Called upon close
+ *
+ * @api private
+ */
+
+WS.prototype.onClose = function () {
+  Transport.prototype.onClose.call(this);
+};
+
+/**
+ * Closes socket.
+ *
+ * @api private
+ */
+
+WS.prototype.doClose = function () {
+  if (typeof this.ws !== 'undefined') {
+    this.ws.close();
+  }
+};
+
+/**
+ * Generates uri for connection.
+ *
+ * @api private
+ */
+
+WS.prototype.uri = function () {
+  var query = this.query || {};
+  var schema = this.secure ? 'wss' : 'ws';
+  var port = '';
+
+  // avoid port if default for schema
+  if (this.port && (('wss' === schema && Number(this.port) !== 443) ||
+    ('ws' === schema && Number(this.port) !== 80))) {
+    port = ':' + this.port;
+  }
+
+  // append timestamp to URI
+  if (this.timestampRequests) {
+    query[this.timestampParam] = yeast();
+  }
+
+  // communicate binary support capabilities
+  if (!this.supportsBinary) {
+    query.b64 = 1;
+  }
+
+  query = parseqs.encode(query);
+
+  // prepend ? to query
+  if (query.length) {
+    query = '?' + query;
+  }
+
+  var ipv6 = this.hostname.indexOf(':') !== -1;
+  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;
+};
+
+/**
+ * Feature detection for WebSocket.
+ *
+ * @return {Boolean} whether this transport is available.
+ * @api public
+ */
+
+WS.prototype.check = function () {
+  return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name);
+};
@@ -0,0 +1,37 @@
+// browser shim for xmlhttprequest module
+
+var hasCORS = require('has-cors');
+
+module.exports = function (opts) {
+  var xdomain = opts.xdomain;
+
+  // scheme must be same when usign XDomainRequest
+  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
+  var xscheme = opts.xscheme;
+
+  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.
+  // https://github.com/Automattic/engine.io-client/pull/217
+  var enablesXDR = opts.enablesXDR;
+
+  // XMLHttpRequest can be disabled on IE
+  try {
+    if ('undefined' !== typeof XMLHttpRequest && (!xdomain || hasCORS)) {
+      return new XMLHttpRequest();
+    }
+  } catch (e) { }
+
+  // Use XDomainRequest for IE8 if enablesXDR is true
+  // because loading bar keeps flashing when using jsonp-polling
+  // https://github.com/yujiosaka/socke.io-ie8-loading-example
+  try {
+    if ('undefined' !== typeof XDomainRequest && !xscheme && enablesXDR) {
+      return new XDomainRequest();
+    }
+  } catch (e) { }
+
+  if (!xdomain) {
+    try {
+      return new global[['Active'].concat('Object').join('X')]('Microsoft.XMLHTTP');
+    } catch (e) { }
+  }
+};
@@ -0,0 +1,112 @@
+{
+  "_from": "engine.io-client@~3.2.0",
+  "_id": "engine.io-client@3.2.1",
+  "_inBundle": false,
+  "_integrity": "sha512-y5AbkytWeM4jQr7m/koQLc5AxpRKC1hEVUb/s1FUAWEJq5AzJJ4NLvzuKPuxtDi5Mq755WuDvZ6Iv2rXj4PTzw==",
+  "_location": "/socket.io/engine.io-client",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "engine.io-client@~3.2.0",
+    "name": "engine.io-client",
+    "escapedName": "engine.io-client",
+    "rawSpec": "~3.2.0",
+    "saveSpec": null,
+    "fetchSpec": "~3.2.0"
+  },
+  "_requiredBy": [
+    "/socket.io/socket.io-client"
+  ],
+  "_resolved": "https://registry.npmjs.org/engine.io-client/-/engine.io-client-3.2.1.tgz",
+  "_shasum": "6f54c0475de487158a1a7c77d10178708b6add36",
+  "_spec": "engine.io-client@~3.2.0",
+  "_where": "/srv/http/mmap_sarrebourg/user/themes/basic/node_modules/socket.io/node_modules/socket.io-client",
+  "browser": {
+    "ws": false,
+    "xmlhttprequest-ssl": "./lib/xmlhttprequest.js"
+  },
+  "bugs": {
+    "url": "https://github.com/socketio/engine.io-client/issues"
+  },
+  "bundleDependencies": false,
+  "contributors": [
+    {
+      "name": "Guillermo Rauch",
+      "email": "rauchg@gmail.com"
+    },
+    {
+      "name": "Vladimir Dronnikov",
+      "email": "dronnikov@gmail.com"
+    },
+    {
+      "name": "Christoph Dorn",
+      "url": "https://github.com/cadorn"
+    },
+    {
+      "name": "Mark Mokryn",
+      "email": "mokesmokes@gmail.com"
+    }
+  ],
+  "dependencies": {
+    "component-emitter": "1.2.1",
+    "component-inherit": "0.0.3",
+    "debug": "~3.1.0",
+    "engine.io-parser": "~2.1.1",
+    "has-cors": "1.1.0",
+    "indexof": "0.0.1",
+    "parseqs": "0.0.5",
+    "parseuri": "0.0.5",
+    "ws": "~3.3.1",
+    "xmlhttprequest-ssl": "~1.5.4",
+    "yeast": "0.1.2"
+  },
+  "deprecated": false,
+  "description": "Client for the realtime Engine",
+  "devDependencies": {
+    "babel-core": "^6.24.0",
+    "babel-eslint": "4.1.7",
+    "babel-loader": "^6.4.1",
+    "babel-preset-es2015": "^6.24.0",
+    "blob": "^0.0.4",
+    "concat-stream": "^1.6.0",
+    "del": "^2.2.2",
+    "derequire": "^2.0.6",
+    "engine.io": "3.2.0",
+    "eslint-config-standard": "4.4.0",
+    "eslint-plugin-standard": "1.3.1",
+    "expect.js": "^0.3.1",
+    "express": "4.15.2",
+    "gulp": "3.9.1",
+    "gulp-eslint": "1.1.1",
+    "gulp-file": "^0.3.0",
+    "gulp-istanbul": "^1.1.1",
+    "gulp-mocha": "^4.3.0",
+    "gulp-task-listing": "1.0.1",
+    "istanbul": "^0.4.5",
+    "mocha": "^3.2.0",
+    "socket.io-browsers": "^1.0.0",
+    "webpack": "1.12.12",
+    "webpack-stream": "^3.2.0",
+    "zuul": "^3.11.1",
+    "zuul-builder-webpack": "^1.2.0",
+    "zuul-ngrok": "4.0.0"
+  },
+  "files": [
+    "index.js",
+    "lib/",
+    "engine.io.js"
+  ],
+  "homepage": "https://github.com/socketio/engine.io-client",
+  "license": "MIT",
+  "main": "lib/index.js",
+  "name": "engine.io-client",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/socketio/engine.io-client.git"
+  },
+  "scripts": {
+    "test": "gulp test"
+  },
+  "version": "3.2.1"
+}
@@ -0,0 +1,54 @@
+
+# isarray
+
+`Array#isArray` for older browsers.
+
+[![build status](https://secure.travis-ci.org/juliangruber/isarray.svg)](http://travis-ci.org/juliangruber/isarray)
+[![downloads](https://img.shields.io/npm/dm/isarray.svg)](https://www.npmjs.org/package/isarray)
+
+[![browser support](https://ci.testling.com/juliangruber/isarray.png)
+](https://ci.testling.com/juliangruber/isarray)
+
+## Usage
+
+```js
+var isArray = require('isarray');
+
+console.log(isArray([])); // => true
+console.log(isArray({})); // => false
+```
+
+## Installation
+
+With [npm](https://npmjs.org) do
+
+```bash
+$ npm install isarray
+```
+
+Then bundle for the browser with
+[browserify](https://github.com/substack/node-browserify).
+
+## License
+
+(MIT)
+
+Copyright (c) 2013 Julian Gruber &lt;julian@juliangruber.com&gt;
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the "Software"), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies
+of the Software, and to permit persons to whom the Software is furnished to do
+so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
@@ -0,0 +1,5 @@
+var toString = {}.toString;
+
+module.exports = Array.isArray || function (arr) {
+  return toString.call(arr) == '[object Array]';
+};
@@ -0,0 +1,76 @@
+{
+  "_from": "isarray@2.0.1",
+  "_id": "isarray@2.0.1",
+  "_inBundle": false,
+  "_integrity": "sha1-o32U7ZzaLVmGXJ92/llu4fM4dB4=",
+  "_location": "/socket.io/isarray",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "isarray@2.0.1",
+    "name": "isarray",
+    "escapedName": "isarray",
+    "rawSpec": "2.0.1",
+    "saveSpec": null,
+    "fetchSpec": "2.0.1"
+  },
+  "_requiredBy": [
+    "/socket.io/socket.io-parser"
+  ],
+  "_resolved": "https://registry.npmjs.org/isarray/-/isarray-2.0.1.tgz",
+  "_shasum": "a37d94ed9cda2d59865c9f76fe596ee1f338741e",
+  "_spec": "isarray@2.0.1",
+  "_where": "/srv/http/mmap_sarrebourg/user/themes/basic/node_modules/socket.io/node_modules/socket.io-parser",
+  "author": {
+    "name": "Julian Gruber",
+    "email": "mail@juliangruber.com",
+    "url": "http://juliangruber.com"
+  },
+  "bugs": {
+    "url": "https://github.com/juliangruber/isarray/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {},
+  "deprecated": false,
+  "description": "Array#isArray for older browsers",
+  "devDependencies": {
+    "tape": "~2.13.4"
+  },
+  "files": [
+    "index.js"
+  ],
+  "homepage": "https://github.com/juliangruber/isarray",
+  "keywords": [
+    "browser",
+    "isarray",
+    "array"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "isarray",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/juliangruber/isarray.git"
+  },
+  "scripts": {
+    "test": "tape test.js"
+  },
+  "testling": {
+    "files": "test.js",
+    "browsers": [
+      "ie/8..latest",
+      "firefox/17..latest",
+      "firefox/nightly",
+      "chrome/22..latest",
+      "chrome/canary",
+      "opera/12..latest",
+      "opera/next",
+      "safari/5.1..latest",
+      "ipad/6.0..latest",
+      "iphone/6.0..latest",
+      "android-browser/4.2..latest"
+    ]
+  },
+  "version": "2.0.1"
+}
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2014 Guillermo Rauch
+
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.
@@ -0,0 +1,57 @@
+
+# socket.io-client
+
+[![Build Status](https://secure.travis-ci.org/socketio/socket.io-client.svg?branch=master)](http://travis-ci.org/socketio/socket.io-client)
+[![Dependency Status](https://david-dm.org/socketio/socket.io-client.svg)](https://david-dm.org/socketio/socket.io-client)
+[![devDependency Status](https://david-dm.org/socketio/socket.io-client/dev-status.svg)](https://david-dm.org/socketio/socket.io-client#info=devDependencies)
+[![NPM version](https://badge.fury.io/js/socket.io-client.svg)](https://www.npmjs.com/package/socket.io-client)
+![Downloads](http://img.shields.io/npm/dm/socket.io-client.svg?style=flat)
+[![](http://slack.socket.io/badge.svg?)](http://slack.socket.io)
+
+[![Sauce Test Status](https://saucelabs.com/browser-matrix/socket.svg)](https://saucelabs.com/u/socket)
+
+## How to use
+
+A standalone build of `socket.io-client` is exposed automatically by the
+socket.io server as `/socket.io/socket.io.js`. Alternatively you can
+serve the file `socket.io.js` found in the `dist` folder.
+
+```html
+<script src="/socket.io/socket.io.js"></script>
+<script>
+  var socket = io('http://localhost');
+  socket.on('connect', function(){});
+  socket.on('event', function(data){});
+  socket.on('disconnect', function(){});
+</script>
+```
+
+```js
+// with ES6 import
+import io from 'socket.io-client';
+
+const socket = io('http://localhost');
+```
+
+A slim build (without `JSON3`, a JSON polyfill for IE6/IE7, and `debug`) is also available: `socket.io.slim.js`.
+
+Socket.IO is compatible with [browserify](http://browserify.org/) and [webpack](https://webpack.js.org/) (see example [there](https://github.com/socketio/socket.io/tree/2.0.3/examples/webpack-build)).
+
+### Node.JS (server-side usage)
+
+  Add `socket.io-client` to your `package.json` and then:
+
+  ```js
+  var socket = require('socket.io-client')('http://localhost');
+  socket.on('connect', function(){});
+  socket.on('event', function(data){});
+  socket.on('disconnect', function(){});
+  ```
+
+## API
+
+See [API](/docs/API.md)
+
+## License
+
+[MIT](/LICENSE)
@@ -0,0 +1,94 @@
+
+/**
+ * Module dependencies.
+ */
+
+var url = require('./url');
+var parser = require('socket.io-parser');
+var Manager = require('./manager');
+var debug = require('debug')('socket.io-client');
+
+/**
+ * Module exports.
+ */
+
+module.exports = exports = lookup;
+
+/**
+ * Managers cache.
+ */
+
+var cache = exports.managers = {};
+
+/**
+ * Looks up an existing `Manager` for multiplexing.
+ * If the user summons:
+ *
+ *   `io('http://localhost/a');`
+ *   `io('http://localhost/b');`
+ *
+ * We reuse the existing instance based on same scheme/port/host,
+ * and we initialize sockets for each namespace.
+ *
+ * @api public
+ */
+
+function lookup (uri, opts) {
+  if (typeof uri === 'object') {
+    opts = uri;
+    uri = undefined;
+  }
+
+  opts = opts || {};
+
+  var parsed = url(uri);
+  var source = parsed.source;
+  var id = parsed.id;
+  var path = parsed.path;
+  var sameNamespace = cache[id] && path in cache[id].nsps;
+  var newConnection = opts.forceNew || opts['force new connection'] ||
+                      false === opts.multiplex || sameNamespace;
+
+  var io;
+
+  if (newConnection) {
+    debug('ignoring socket cache for %s', source);
+    io = Manager(source, opts);
+  } else {
+    if (!cache[id]) {
+      debug('new io instance for %s', source);
+      cache[id] = Manager(source, opts);
+    }
+    io = cache[id];
+  }
+  if (parsed.query && !opts.query) {
+    opts.query = parsed.query;
+  }
+  return io.socket(parsed.path, opts);
+}
+
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+exports.protocol = parser.protocol;
+
+/**
+ * `connect`.
+ *
+ * @param {String} uri
+ * @api public
+ */
+
+exports.connect = lookup;
+
+/**
+ * Expose constructors for standalone build.
+ *
+ * @api public
+ */
+
+exports.Manager = require('./manager');
+exports.Socket = require('./socket');
@@ -0,0 +1,573 @@
+
+/**
+ * Module dependencies.
+ */
+
+var eio = require('engine.io-client');
+var Socket = require('./socket');
+var Emitter = require('component-emitter');
+var parser = require('socket.io-parser');
+var on = require('./on');
+var bind = require('component-bind');
+var debug = require('debug')('socket.io-client:manager');
+var indexOf = require('indexof');
+var Backoff = require('backo2');
+
+/**
+ * IE6+ hasOwnProperty
+ */
+
+var has = Object.prototype.hasOwnProperty;
+
+/**
+ * Module exports
+ */
+
+module.exports = Manager;
+
+/**
+ * `Manager` constructor.
+ *
+ * @param {String} engine instance or engine uri/opts
+ * @param {Object} options
+ * @api public
+ */
+
+function Manager (uri, opts) {
+  if (!(this instanceof Manager)) return new Manager(uri, opts);
+  if (uri && ('object' === typeof uri)) {
+    opts = uri;
+    uri = undefined;
+  }
+  opts = opts || {};
+
+  opts.path = opts.path || '/socket.io';
+  this.nsps = {};
+  this.subs = [];
+  this.opts = opts;
+  this.reconnection(opts.reconnection !== false);
+  this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
+  this.reconnectionDelay(opts.reconnectionDelay || 1000);
+  this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
+  this.randomizationFactor(opts.randomizationFactor || 0.5);
+  this.backoff = new Backoff({
+    min: this.reconnectionDelay(),
+    max: this.reconnectionDelayMax(),
+    jitter: this.randomizationFactor()
+  });
+  this.timeout(null == opts.timeout ? 20000 : opts.timeout);
+  this.readyState = 'closed';
+  this.uri = uri;
+  this.connecting = [];
+  this.lastPing = null;
+  this.encoding = false;
+  this.packetBuffer = [];
+  var _parser = opts.parser || parser;
+  this.encoder = new _parser.Encoder();
+  this.decoder = new _parser.Decoder();
+  this.autoConnect = opts.autoConnect !== false;
+  if (this.autoConnect) this.open();
+}
+
+/**
+ * Propagate given event to sockets and emit on `this`
+ *
+ * @api private
+ */
+
+Manager.prototype.emitAll = function () {
+  this.emit.apply(this, arguments);
+  for (var nsp in this.nsps) {
+    if (has.call(this.nsps, nsp)) {
+      this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);
+    }
+  }
+};
+
+/**
+ * Update `socket.id` of all sockets
+ *
+ * @api private
+ */
+
+Manager.prototype.updateSocketIds = function () {
+  for (var nsp in this.nsps) {
+    if (has.call(this.nsps, nsp)) {
+      this.nsps[nsp].id = this.generateId(nsp);
+    }
+  }
+};
+
+/**
+ * generate `socket.id` for the given `nsp`
+ *
+ * @param {String} nsp
+ * @return {String}
+ * @api private
+ */
+
+Manager.prototype.generateId = function (nsp) {
+  return (nsp === '/' ? '' : (nsp + '#')) + this.engine.id;
+};
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Manager.prototype);
+
+/**
+ * Sets the `reconnection` config.
+ *
+ * @param {Boolean} true/false if it should automatically reconnect
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnection = function (v) {
+  if (!arguments.length) return this._reconnection;
+  this._reconnection = !!v;
+  return this;
+};
+
+/**
+ * Sets the reconnection attempts config.
+ *
+ * @param {Number} max reconnection attempts before giving up
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnectionAttempts = function (v) {
+  if (!arguments.length) return this._reconnectionAttempts;
+  this._reconnectionAttempts = v;
+  return this;
+};
+
+/**
+ * Sets the delay between reconnections.
+ *
+ * @param {Number} delay
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnectionDelay = function (v) {
+  if (!arguments.length) return this._reconnectionDelay;
+  this._reconnectionDelay = v;
+  this.backoff && this.backoff.setMin(v);
+  return this;
+};
+
+Manager.prototype.randomizationFactor = function (v) {
+  if (!arguments.length) return this._randomizationFactor;
+  this._randomizationFactor = v;
+  this.backoff && this.backoff.setJitter(v);
+  return this;
+};
+
+/**
+ * Sets the maximum delay between reconnections.
+ *
+ * @param {Number} delay
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.reconnectionDelayMax = function (v) {
+  if (!arguments.length) return this._reconnectionDelayMax;
+  this._reconnectionDelayMax = v;
+  this.backoff && this.backoff.setMax(v);
+  return this;
+};
+
+/**
+ * Sets the connection timeout. `false` to disable
+ *
+ * @return {Manager} self or value
+ * @api public
+ */
+
+Manager.prototype.timeout = function (v) {
+  if (!arguments.length) return this._timeout;
+  this._timeout = v;
+  return this;
+};
+
+/**
+ * Starts trying to reconnect if reconnection is enabled and we have not
+ * started reconnecting yet
+ *
+ * @api private
+ */
+
+Manager.prototype.maybeReconnectOnOpen = function () {
+  // Only try to reconnect if it's the first time we're connecting
+  if (!this.reconnecting && this._reconnection && this.backoff.attempts === 0) {
+    // keeps reconnection from firing twice for the same reconnection loop
+    this.reconnect();
+  }
+};
+
+/**
+ * Sets the current transport `socket`.
+ *
+ * @param {Function} optional, callback
+ * @return {Manager} self
+ * @api public
+ */
+
+Manager.prototype.open =
+Manager.prototype.connect = function (fn, opts) {
+  debug('readyState %s', this.readyState);
+  if (~this.readyState.indexOf('open')) return this;
+
+  debug('opening %s', this.uri);
+  this.engine = eio(this.uri, this.opts);
+  var socket = this.engine;
+  var self = this;
+  this.readyState = 'opening';
+  this.skipReconnect = false;
+
+  // emit `open`
+  var openSub = on(socket, 'open', function () {
+    self.onopen();
+    fn && fn();
+  });
+
+  // emit `connect_error`
+  var errorSub = on(socket, 'error', function (data) {
+    debug('connect_error');
+    self.cleanup();
+    self.readyState = 'closed';
+    self.emitAll('connect_error', data);
+    if (fn) {
+      var err = new Error('Connection error');
+      err.data = data;
+      fn(err);
+    } else {
+      // Only do this if there is no fn to handle the error
+      self.maybeReconnectOnOpen();
+    }
+  });
+
+  // emit `connect_timeout`
+  if (false !== this._timeout) {
+    var timeout = this._timeout;
+    debug('connect attempt will timeout after %d', timeout);
+
+    // set timer
+    var timer = setTimeout(function () {
+      debug('connect attempt timed out after %d', timeout);
+      openSub.destroy();
+      socket.close();
+      socket.emit('error', 'timeout');
+      self.emitAll('connect_timeout', timeout);
+    }, timeout);
+
+    this.subs.push({
+      destroy: function () {
+        clearTimeout(timer);
+      }
+    });
+  }
+
+  this.subs.push(openSub);
+  this.subs.push(errorSub);
+
+  return this;
+};
+
+/**
+ * Called upon transport open.
+ *
+ * @api private
+ */
+
+Manager.prototype.onopen = function () {
+  debug('open');
+
+  // clear old subs
+  this.cleanup();
+
+  // mark as open
+  this.readyState = 'open';
+  this.emit('open');
+
+  // add new subs
+  var socket = this.engine;
+  this.subs.push(on(socket, 'data', bind(this, 'ondata')));
+  this.subs.push(on(socket, 'ping', bind(this, 'onping')));
+  this.subs.push(on(socket, 'pong', bind(this, 'onpong')));
+  this.subs.push(on(socket, 'error', bind(this, 'onerror')));
+  this.subs.push(on(socket, 'close', bind(this, 'onclose')));
+  this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));
+};
+
+/**
+ * Called upon a ping.
+ *
+ * @api private
+ */
+
+Manager.prototype.onping = function () {
+  this.lastPing = new Date();
+  this.emitAll('ping');
+};
+
+/**
+ * Called upon a packet.
+ *
+ * @api private
+ */
+
+Manager.prototype.onpong = function () {
+  this.emitAll('pong', new Date() - this.lastPing);
+};
+
+/**
+ * Called with data.
+ *
+ * @api private
+ */
+
+Manager.prototype.ondata = function (data) {
+  this.decoder.add(data);
+};
+
+/**
+ * Called when parser fully decodes a packet.
+ *
+ * @api private
+ */
+
+Manager.prototype.ondecoded = function (packet) {
+  this.emit('packet', packet);
+};
+
+/**
+ * Called upon socket error.
+ *
+ * @api private
+ */
+
+Manager.prototype.onerror = function (err) {
+  debug('error', err);
+  this.emitAll('error', err);
+};
+
+/**
+ * Creates a new socket for the given `nsp`.
+ *
+ * @return {Socket}
+ * @api public
+ */
+
+Manager.prototype.socket = function (nsp, opts) {
+  var socket = this.nsps[nsp];
+  if (!socket) {
+    socket = new Socket(this, nsp, opts);
+    this.nsps[nsp] = socket;
+    var self = this;
+    socket.on('connecting', onConnecting);
+    socket.on('connect', function () {
+      socket.id = self.generateId(nsp);
+    });
+
+    if (this.autoConnect) {
+      // manually call here since connecting event is fired before listening
+      onConnecting();
+    }
+  }
+
+  function onConnecting () {
+    if (!~indexOf(self.connecting, socket)) {
+      self.connecting.push(socket);
+    }
+  }
+
+  return socket;
+};
+
+/**
+ * Called upon a socket close.
+ *
+ * @param {Socket} socket
+ */
+
+Manager.prototype.destroy = function (socket) {
+  var index = indexOf(this.connecting, socket);
+  if (~index) this.connecting.splice(index, 1);
+  if (this.connecting.length) return;
+
+  this.close();
+};
+
+/**
+ * Writes a packet.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Manager.prototype.packet = function (packet) {
+  debug('writing packet %j', packet);
+  var self = this;
+  if (packet.query && packet.type === 0) packet.nsp += '?' + packet.query;
+
+  if (!self.encoding) {
+    // encode, then write to engine with result
+    self.encoding = true;
+    this.encoder.encode(packet, function (encodedPackets) {
+      for (var i = 0; i < encodedPackets.length; i++) {
+        self.engine.write(encodedPackets[i], packet.options);
+      }
+      self.encoding = false;
+      self.processPacketQueue();
+    });
+  } else { // add packet to the queue
+    self.packetBuffer.push(packet);
+  }
+};
+
+/**
+ * If packet buffer is non-empty, begins encoding the
+ * next packet in line.
+ *
+ * @api private
+ */
+
+Manager.prototype.processPacketQueue = function () {
+  if (this.packetBuffer.length > 0 && !this.encoding) {
+    var pack = this.packetBuffer.shift();
+    this.packet(pack);
+  }
+};
+
+/**
+ * Clean up transport subscriptions and packet buffer.
+ *
+ * @api private
+ */
+
+Manager.prototype.cleanup = function () {
+  debug('cleanup');
+
+  var subsLength = this.subs.length;
+  for (var i = 0; i < subsLength; i++) {
+    var sub = this.subs.shift();
+    sub.destroy();
+  }
+
+  this.packetBuffer = [];
+  this.encoding = false;
+  this.lastPing = null;
+
+  this.decoder.destroy();
+};
+
+/**
+ * Close the current socket.
+ *
+ * @api private
+ */
+
+Manager.prototype.close =
+Manager.prototype.disconnect = function () {
+  debug('disconnect');
+  this.skipReconnect = true;
+  this.reconnecting = false;
+  if ('opening' === this.readyState) {
+    // `onclose` will not fire because
+    // an open event never happened
+    this.cleanup();
+  }
+  this.backoff.reset();
+  this.readyState = 'closed';
+  if (this.engine) this.engine.close();
+};
+
+/**
+ * Called upon engine close.
+ *
+ * @api private
+ */
+
+Manager.prototype.onclose = function (reason) {
+  debug('onclose');
+
+  this.cleanup();
+  this.backoff.reset();
+  this.readyState = 'closed';
+  this.emit('close', reason);
+
+  if (this._reconnection && !this.skipReconnect) {
+    this.reconnect();
+  }
+};
+
+/**
+ * Attempt a reconnection.
+ *
+ * @api private
+ */
+
+Manager.prototype.reconnect = function () {
+  if (this.reconnecting || this.skipReconnect) return this;
+
+  var self = this;
+
+  if (this.backoff.attempts >= this._reconnectionAttempts) {
+    debug('reconnect failed');
+    this.backoff.reset();
+    this.emitAll('reconnect_failed');
+    this.reconnecting = false;
+  } else {
+    var delay = this.backoff.duration();
+    debug('will wait %dms before reconnect attempt', delay);
+
+    this.reconnecting = true;
+    var timer = setTimeout(function () {
+      if (self.skipReconnect) return;
+
+      debug('attempting reconnect');
+      self.emitAll('reconnect_attempt', self.backoff.attempts);
+      self.emitAll('reconnecting', self.backoff.attempts);
+
+      // check again for the case socket closed in above events
+      if (self.skipReconnect) return;
+
+      self.open(function (err) {
+        if (err) {
+          debug('reconnect attempt error');
+          self.reconnecting = false;
+          self.reconnect();
+          self.emitAll('reconnect_error', err.data);
+        } else {
+          debug('reconnect success');
+          self.onreconnect();
+        }
+      });
+    }, delay);
+
+    this.subs.push({
+      destroy: function () {
+        clearTimeout(timer);
+      }
+    });
+  }
+};
+
+/**
+ * Called upon successful reconnect.
+ *
+ * @api private
+ */
+
+Manager.prototype.onreconnect = function () {
+  var attempt = this.backoff.attempts;
+  this.reconnecting = false;
+  this.backoff.reset();
+  this.updateSocketIds();
+  this.emitAll('reconnect', attempt);
+};
@@ -0,0 +1,24 @@
+
+/**
+ * Module exports.
+ */
+
+module.exports = on;
+
+/**
+ * Helper for subscriptions.
+ *
+ * @param {Object|EventEmitter} obj with `Emitter` mixin or `EventEmitter`
+ * @param {String} event name
+ * @param {Function} callback
+ * @api public
+ */
+
+function on (obj, ev, fn) {
+  obj.on(ev, fn);
+  return {
+    destroy: function () {
+      obj.removeListener(ev, fn);
+    }
+  };
+}
@@ -0,0 +1,438 @@
+
+/**
+ * Module dependencies.
+ */
+
+var parser = require('socket.io-parser');
+var Emitter = require('component-emitter');
+var toArray = require('to-array');
+var on = require('./on');
+var bind = require('component-bind');
+var debug = require('debug')('socket.io-client:socket');
+var parseqs = require('parseqs');
+var hasBin = require('has-binary2');
+
+/**
+ * Module exports.
+ */
+
+module.exports = exports = Socket;
+
+/**
+ * Internal events (blacklisted).
+ * These events can't be emitted by the user.
+ *
+ * @api private
+ */
+
+var events = {
+  connect: 1,
+  connect_error: 1,
+  connect_timeout: 1,
+  connecting: 1,
+  disconnect: 1,
+  error: 1,
+  reconnect: 1,
+  reconnect_attempt: 1,
+  reconnect_failed: 1,
+  reconnect_error: 1,
+  reconnecting: 1,
+  ping: 1,
+  pong: 1
+};
+
+/**
+ * Shortcut to `Emitter#emit`.
+ */
+
+var emit = Emitter.prototype.emit;
+
+/**
+ * `Socket` constructor.
+ *
+ * @api public
+ */
+
+function Socket (io, nsp, opts) {
+  this.io = io;
+  this.nsp = nsp;
+  this.json = this; // compat
+  this.ids = 0;
+  this.acks = {};
+  this.receiveBuffer = [];
+  this.sendBuffer = [];
+  this.connected = false;
+  this.disconnected = true;
+  this.flags = {};
+  if (opts && opts.query) {
+    this.query = opts.query;
+  }
+  if (this.io.autoConnect) this.open();
+}
+
+/**
+ * Mix in `Emitter`.
+ */
+
+Emitter(Socket.prototype);
+
+/**
+ * Subscribe to open, close and packet events
+ *
+ * @api private
+ */
+
+Socket.prototype.subEvents = function () {
+  if (this.subs) return;
+
+  var io = this.io;
+  this.subs = [
+    on(io, 'open', bind(this, 'onopen')),
+    on(io, 'packet', bind(this, 'onpacket')),
+    on(io, 'close', bind(this, 'onclose'))
+  ];
+};
+
+/**
+ * "Opens" the socket.
+ *
+ * @api public
+ */
+
+Socket.prototype.open =
+Socket.prototype.connect = function () {
+  if (this.connected) return this;
+
+  this.subEvents();
+  this.io.open(); // ensure open
+  if ('open' === this.io.readyState) this.onopen();
+  this.emit('connecting');
+  return this;
+};
+
+/**
+ * Sends a `message` event.
+ *
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.send = function () {
+  var args = toArray(arguments);
+  args.unshift('message');
+  this.emit.apply(this, args);
+  return this;
+};
+
+/**
+ * Override `emit`.
+ * If the event is in `events`, it's emitted normally.
+ *
+ * @param {String} event name
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.emit = function (ev) {
+  if (events.hasOwnProperty(ev)) {
+    emit.apply(this, arguments);
+    return this;
+  }
+
+  var args = toArray(arguments);
+  var packet = {
+    type: (this.flags.binary !== undefined ? this.flags.binary : hasBin(args)) ? parser.BINARY_EVENT : parser.EVENT,
+    data: args
+  };
+
+  packet.options = {};
+  packet.options.compress = !this.flags || false !== this.flags.compress;
+
+  // event ack callback
+  if ('function' === typeof args[args.length - 1]) {
+    debug('emitting packet with ack id %d', this.ids);
+    this.acks[this.ids] = args.pop();
+    packet.id = this.ids++;
+  }
+
+  if (this.connected) {
+    this.packet(packet);
+  } else {
+    this.sendBuffer.push(packet);
+  }
+
+  this.flags = {};
+
+  return this;
+};
+
+/**
+ * Sends a packet.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.packet = function (packet) {
+  packet.nsp = this.nsp;
+  this.io.packet(packet);
+};
+
+/**
+ * Called upon engine `open`.
+ *
+ * @api private
+ */
+
+Socket.prototype.onopen = function () {
+  debug('transport is open - connecting');
+
+  // write connect packet if necessary
+  if ('/' !== this.nsp) {
+    if (this.query) {
+      var query = typeof this.query === 'object' ? parseqs.encode(this.query) : this.query;
+      debug('sending connect packet with query %s', query);
+      this.packet({type: parser.CONNECT, query: query});
+    } else {
+      this.packet({type: parser.CONNECT});
+    }
+  }
+};
+
+/**
+ * Called upon engine `close`.
+ *
+ * @param {String} reason
+ * @api private
+ */
+
+Socket.prototype.onclose = function (reason) {
+  debug('close (%s)', reason);
+  this.connected = false;
+  this.disconnected = true;
+  delete this.id;
+  this.emit('disconnect', reason);
+};
+
+/**
+ * Called with socket packet.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onpacket = function (packet) {
+  var sameNamespace = packet.nsp === this.nsp;
+  var rootNamespaceError = packet.type === parser.ERROR && packet.nsp === '/';
+
+  if (!sameNamespace && !rootNamespaceError) return;
+
+  switch (packet.type) {
+    case parser.CONNECT:
+      this.onconnect();
+      break;
+
+    case parser.EVENT:
+      this.onevent(packet);
+      break;
+
+    case parser.BINARY_EVENT:
+      this.onevent(packet);
+      break;
+
+    case parser.ACK:
+      this.onack(packet);
+      break;
+
+    case parser.BINARY_ACK:
+      this.onack(packet);
+      break;
+
+    case parser.DISCONNECT:
+      this.ondisconnect();
+      break;
+
+    case parser.ERROR:
+      this.emit('error', packet.data);
+      break;
+  }
+};
+
+/**
+ * Called upon a server event.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onevent = function (packet) {
+  var args = packet.data || [];
+  debug('emitting event %j', args);
+
+  if (null != packet.id) {
+    debug('attaching ack callback to event');
+    args.push(this.ack(packet.id));
+  }
+
+  if (this.connected) {
+    emit.apply(this, args);
+  } else {
+    this.receiveBuffer.push(args);
+  }
+};
+
+/**
+ * Produces an ack callback to emit with an event.
+ *
+ * @api private
+ */
+
+Socket.prototype.ack = function (id) {
+  var self = this;
+  var sent = false;
+  return function () {
+    // prevent double callbacks
+    if (sent) return;
+    sent = true;
+    var args = toArray(arguments);
+    debug('sending ack %j', args);
+
+    self.packet({
+      type: hasBin(args) ? parser.BINARY_ACK : parser.ACK,
+      id: id,
+      data: args
+    });
+  };
+};
+
+/**
+ * Called upon a server acknowlegement.
+ *
+ * @param {Object} packet
+ * @api private
+ */
+
+Socket.prototype.onack = function (packet) {
+  var ack = this.acks[packet.id];
+  if ('function' === typeof ack) {
+    debug('calling ack %s with %j', packet.id, packet.data);
+    ack.apply(this, packet.data);
+    delete this.acks[packet.id];
+  } else {
+    debug('bad ack %s', packet.id);
+  }
+};
+
+/**
+ * Called upon server connect.
+ *
+ * @api private
+ */
+
+Socket.prototype.onconnect = function () {
+  this.connected = true;
+  this.disconnected = false;
+  this.emit('connect');
+  this.emitBuffered();
+};
+
+/**
+ * Emit buffered events (received and emitted).
+ *
+ * @api private
+ */
+
+Socket.prototype.emitBuffered = function () {
+  var i;
+  for (i = 0; i < this.receiveBuffer.length; i++) {
+    emit.apply(this, this.receiveBuffer[i]);
+  }
+  this.receiveBuffer = [];
+
+  for (i = 0; i < this.sendBuffer.length; i++) {
+    this.packet(this.sendBuffer[i]);
+  }
+  this.sendBuffer = [];
+};
+
+/**
+ * Called upon server disconnect.
+ *
+ * @api private
+ */
+
+Socket.prototype.ondisconnect = function () {
+  debug('server disconnect (%s)', this.nsp);
+  this.destroy();
+  this.onclose('io server disconnect');
+};
+
+/**
+ * Called upon forced client/server side disconnections,
+ * this method ensures the manager stops tracking us and
+ * that reconnections don't get triggered for this.
+ *
+ * @api private.
+ */
+
+Socket.prototype.destroy = function () {
+  if (this.subs) {
+    // clean subscriptions to avoid reconnections
+    for (var i = 0; i < this.subs.length; i++) {
+      this.subs[i].destroy();
+    }
+    this.subs = null;
+  }
+
+  this.io.destroy(this);
+};
+
+/**
+ * Disconnects the socket manually.
+ *
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.close =
+Socket.prototype.disconnect = function () {
+  if (this.connected) {
+    debug('performing disconnect (%s)', this.nsp);
+    this.packet({ type: parser.DISCONNECT });
+  }
+
+  // remove socket from pool
+  this.destroy();
+
+  if (this.connected) {
+    // fire events
+    this.onclose('io client disconnect');
+  }
+  return this;
+};
+
+/**
+ * Sets the compress flag.
+ *
+ * @param {Boolean} if `true`, compresses the sending data
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.compress = function (compress) {
+  this.flags.compress = compress;
+  return this;
+};
+
+/**
+ * Sets the binary flag
+ *
+ * @param {Boolean} whether the emitted data contains binary
+ * @return {Socket} self
+ * @api public
+ */
+
+Socket.prototype.binary = function (binary) {
+  this.flags.binary = binary;
+  return this;
+};
@@ -0,0 +1,75 @@
+
+/**
+ * Module dependencies.
+ */
+
+var parseuri = require('parseuri');
+var debug = require('debug')('socket.io-client:url');
+
+/**
+ * Module exports.
+ */
+
+module.exports = url;
+
+/**
+ * URL parser.
+ *
+ * @param {String} url
+ * @param {Object} An object meant to mimic window.location.
+ *                 Defaults to window.location.
+ * @api public
+ */
+
+function url (uri, loc) {
+  var obj = uri;
+
+  // default to window.location
+  loc = loc || global.location;
+  if (null == uri) uri = loc.protocol + '//' + loc.host;
+
+  // relative path support
+  if ('string' === typeof uri) {
+    if ('/' === uri.charAt(0)) {
+      if ('/' === uri.charAt(1)) {
+        uri = loc.protocol + uri;
+      } else {
+        uri = loc.host + uri;
+      }
+    }
+
+    if (!/^(https?|wss?):\/\//.test(uri)) {
+      debug('protocol-less url %s', uri);
+      if ('undefined' !== typeof loc) {
+        uri = loc.protocol + '//' + uri;
+      } else {
+        uri = 'https://' + uri;
+      }
+    }
+
+    // parse
+    debug('parse %s', uri);
+    obj = parseuri(uri);
+  }
+
+  // make sure we treat `localhost:80` and `localhost` equally
+  if (!obj.port) {
+    if (/^(http|ws)$/.test(obj.protocol)) {
+      obj.port = '80';
+    } else if (/^(http|ws)s$/.test(obj.protocol)) {
+      obj.port = '443';
+    }
+  }
+
+  obj.path = obj.path || '/';
+
+  var ipv6 = obj.host.indexOf(':') !== -1;
+  var host = ipv6 ? '[' + obj.host + ']' : obj.host;
+
+  // define unique id
+  obj.id = obj.protocol + '://' + host + ':' + obj.port;
+  // define href
+  obj.href = obj.protocol + '://' + host + (loc && loc.port === obj.port ? '' : (':' + obj.port));
+
+  return obj;
+}
@@ -0,0 +1,118 @@
+{
+  "_from": "socket.io-client@2.1.1",
+  "_id": "socket.io-client@2.1.1",
+  "_inBundle": false,
+  "_integrity": "sha512-jxnFyhAuFxYfjqIgduQlhzqTcOEQSn+OHKVfAxWaNWa7ecP7xSNk2Dx/3UEsDcY7NcFafxvNvKPmmO7HTwTxGQ==",
+  "_location": "/socket.io/socket.io-client",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "socket.io-client@2.1.1",
+    "name": "socket.io-client",
+    "escapedName": "socket.io-client",
+    "rawSpec": "2.1.1",
+    "saveSpec": null,
+    "fetchSpec": "2.1.1"
+  },
+  "_requiredBy": [
+    "/socket.io"
+  ],
+  "_resolved": "https://registry.npmjs.org/socket.io-client/-/socket.io-client-2.1.1.tgz",
+  "_shasum": "dcb38103436ab4578ddb026638ae2f21b623671f",
+  "_spec": "socket.io-client@2.1.1",
+  "_where": "/srv/http/mmap_sarrebourg/user/themes/basic/node_modules/socket.io",
+  "bugs": {
+    "url": "https://github.com/Automattic/socket.io-client/issues"
+  },
+  "bundleDependencies": false,
+  "contributors": [
+    {
+      "name": "Guillermo Rauch",
+      "email": "rauchg@gmail.com"
+    },
+    {
+      "name": "Arnout Kazemier",
+      "email": "info@3rd-eden.com"
+    },
+    {
+      "name": "Vladimir Dronnikov",
+      "email": "dronnikov@gmail.com"
+    },
+    {
+      "name": "Einar Otto Stangvik",
+      "email": "einaros@gmail.com"
+    }
+  ],
+  "dependencies": {
+    "backo2": "1.0.2",
+    "base64-arraybuffer": "0.1.5",
+    "component-bind": "1.0.0",
+    "component-emitter": "1.2.1",
+    "debug": "~3.1.0",
+    "engine.io-client": "~3.2.0",
+    "has-binary2": "~1.0.2",
+    "has-cors": "1.1.0",
+    "indexof": "0.0.1",
+    "object-component": "0.0.3",
+    "parseqs": "0.0.5",
+    "parseuri": "0.0.5",
+    "socket.io-parser": "~3.2.0",
+    "to-array": "0.1.4"
+  },
+  "deprecated": false,
+  "description": "[![Build Status](https://secure.travis-ci.org/socketio/socket.io-client.svg?branch=master)](http://travis-ci.org/socketio/socket.io-client) [![Dependency Status](https://david-dm.org/socketio/socket.io-client.svg)](https://david-dm.org/socketio/socket.io-client) [![devDependency Status](https://david-dm.org/socketio/socket.io-client/dev-status.svg)](https://david-dm.org/socketio/socket.io-client#info=devDependencies) [![NPM version](https://badge.fury.io/js/socket.io-client.svg)](https://www.npmjs.com/package/socket.io-client) ![Downloads](http://img.shields.io/npm/dm/socket.io-client.svg?style=flat) [![](http://slack.socket.io/badge.svg?)](http://slack.socket.io)",
+  "devDependencies": {
+    "babel-core": "^6.24.1",
+    "babel-eslint": "4.1.7",
+    "babel-loader": "7.0.0",
+    "babel-preset-es2015": "6.24.1",
+    "concat-stream": "^1.6.0",
+    "derequire": "^2.0.6",
+    "eslint-config-standard": "4.4.0",
+    "eslint-plugin-standard": "1.3.1",
+    "expect.js": "0.3.1",
+    "gulp": "^3.9.1",
+    "gulp-eslint": "1.1.1",
+    "gulp-file": "^0.3.0",
+    "gulp-istanbul": "^1.1.1",
+    "gulp-mocha": "^4.3.1",
+    "gulp-task-listing": "1.0.1",
+    "imports-loader": "^0.7.1",
+    "istanbul": "^0.4.5",
+    "mocha": "^3.3.0",
+    "socket.io": "2.1.1",
+    "socket.io-browsers": "^1.0.0",
+    "strip-loader": "0.1.2",
+    "text-blob-builder": "0.0.1",
+    "webpack-merge": "4.1.2",
+    "webpack-stream": "3.2.0",
+    "zuul": "^3.11.1  ",
+    "zuul-builder-webpack": "^1.2.0",
+    "zuul-ngrok": "4.0.0"
+  },
+  "files": [
+    "lib/",
+    "dist/"
+  ],
+  "homepage": "https://github.com/Automattic/socket.io-client#readme",
+  "keywords": [
+    "realtime",
+    "framework",
+    "websocket",
+    "tcp",
+    "events",
+    "client"
+  ],
+  "license": "MIT",
+  "main": "./lib/index",
+  "name": "socket.io-client",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Automattic/socket.io-client.git"
+  },
+  "scripts": {
+    "test": "gulp test"
+  },
+  "version": "2.1.1"
+}
@@ -0,0 +1,20 @@
+(The MIT License)
+
+Copyright (c) 2014 Guillermo Rauch <guillermo@learnboost.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy of
+this software and associated documentation files (the 'Software'), to deal in
+the Software without restriction, including without limitation the rights to
+use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of
+the Software, and to permit persons to whom the Software is furnished to do so,
+subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED 'AS IS', WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS
+FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR
+COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER
+IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
+CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
@@ -0,0 +1,73 @@
+
+# socket.io-parser
+
+[![Build Status](https://secure.travis-ci.org/socketio/socket.io-parser.svg?branch=master)](http://travis-ci.org/socketio/socket.io-parser)
+[![NPM version](https://badge.fury.io/js/socket.io-parser.svg)](http://badge.fury.io/js/socket.io-parser)
+
+A socket.io encoder and decoder written in JavaScript complying with version `3`
+of [socket.io-protocol](https://github.com/socketio/socket.io-protocol).
+Used by [socket.io](https://github.com/automattic/socket.io) and
+[socket.io-client](https://github.com/automattic/socket.io-client).
+
+## Parser API
+
+  socket.io-parser is the reference implementation of socket.io-protocol. Read
+  the full API here:
+  [socket.io-protocol](https://github.com/learnboost/socket.io-protocol).
+
+## Example Usage
+
+### Encoding and decoding a packet
+
+```js
+var parser = require('socket.io-parser');
+var encoder = new parser.Encoder();
+var packet = {
+  type: parser.EVENT,
+  data: 'test-packet',
+  id: 13
+};
+encoder.encode(packet, function(encodedPackets) {
+  var decoder = new parser.Decoder();
+  decoder.on('decoded', function(decodedPacket) {
+    // decodedPacket.type == parser.EVENT
+    // decodedPacket.data == 'test-packet'
+    // decodedPacket.id == 13
+  });
+
+  for (var i = 0; i < encodedPackets.length; i++) {
+    decoder.add(encodedPackets[i]);
+  }
+});
+```
+
+### Encoding and decoding a packet with binary data
+
+```js
+var parser = require('socket.io-parser');
+var encoder = new parser.Encoder();
+var packet = {
+  type: parser.BINARY_EVENT,
+  data: {i: new Buffer(1234), j: new Blob([new ArrayBuffer(2)])}
+  id: 15
+};
+encoder.encode(packet, function(encodedPackets) {
+  var decoder = new parser.Decoder();
+  decoder.on('decoded', function(decodedPacket) {
+    // decodedPacket.type == parser.BINARY_EVENTEVENT
+    // Buffer.isBuffer(decodedPacket.data.i) == true
+    // Buffer.isBuffer(decodedPacket.data.j) == true
+    // decodedPacket.id == 15
+  });
+
+  for (var i = 0; i < encodedPackets.length; i++) {
+    decoder.add(encodedPackets[i]);
+  }
+});
+```
+See the test suite for more examples of how socket.io-parser is used.
+
+
+## License
+
+MIT
@@ -0,0 +1,141 @@
+/*global Blob,File*/
+
+/**
+ * Module requirements
+ */
+
+var isArray = require('isarray');
+var isBuf = require('./is-buffer');
+var toString = Object.prototype.toString;
+var withNativeBlob = typeof global.Blob === 'function' || toString.call(global.Blob) === '[object BlobConstructor]';
+var withNativeFile = typeof global.File === 'function' || toString.call(global.File) === '[object FileConstructor]';
+
+/**
+ * Replaces every Buffer | ArrayBuffer in packet with a numbered placeholder.
+ * Anything with blobs or files should be fed through removeBlobs before coming
+ * here.
+ *
+ * @param {Object} packet - socket.io event packet
+ * @return {Object} with deconstructed packet and list of buffers
+ * @api public
+ */
+
+exports.deconstructPacket = function(packet) {
+  var buffers = [];
+  var packetData = packet.data;
+  var pack = packet;
+  pack.data = _deconstructPacket(packetData, buffers);
+  pack.attachments = buffers.length; // number of binary 'attachments'
+  return {packet: pack, buffers: buffers};
+};
+
+function _deconstructPacket(data, buffers) {
+  if (!data) return data;
+
+  if (isBuf(data)) {
+    var placeholder = { _placeholder: true, num: buffers.length };
+    buffers.push(data);
+    return placeholder;
+  } else if (isArray(data)) {
+    var newData = new Array(data.length);
+    for (var i = 0; i < data.length; i++) {
+      newData[i] = _deconstructPacket(data[i], buffers);
+    }
+    return newData;
+  } else if (typeof data === 'object' && !(data instanceof Date)) {
+    var newData = {};
+    for (var key in data) {
+      newData[key] = _deconstructPacket(data[key], buffers);
+    }
+    return newData;
+  }
+  return data;
+}
+
+/**
+ * Reconstructs a binary packet from its placeholder packet and buffers
+ *
+ * @param {Object} packet - event packet with placeholders
+ * @param {Array} buffers - binary buffers to put in placeholder positions
+ * @return {Object} reconstructed packet
+ * @api public
+ */
+
+exports.reconstructPacket = function(packet, buffers) {
+  packet.data = _reconstructPacket(packet.data, buffers);
+  packet.attachments = undefined; // no longer useful
+  return packet;
+};
+
+function _reconstructPacket(data, buffers) {
+  if (!data) return data;
+
+  if (data && data._placeholder) {
+    return buffers[data.num]; // appropriate buffer (should be natural order anyway)
+  } else if (isArray(data)) {
+    for (var i = 0; i < data.length; i++) {
+      data[i] = _reconstructPacket(data[i], buffers);
+    }
+  } else if (typeof data === 'object') {
+    for (var key in data) {
+      data[key] = _reconstructPacket(data[key], buffers);
+    }
+  }
+
+  return data;
+}
+
+/**
+ * Asynchronously removes Blobs or Files from data via
+ * FileReader's readAsArrayBuffer method. Used before encoding
+ * data as msgpack. Calls callback with the blobless data.
+ *
+ * @param {Object} data
+ * @param {Function} callback
+ * @api private
+ */
+
+exports.removeBlobs = function(data, callback) {
+  function _removeBlobs(obj, curKey, containingObject) {
+    if (!obj) return obj;
+
+    // convert any blob
+    if ((withNativeBlob && obj instanceof Blob) ||
+        (withNativeFile && obj instanceof File)) {
+      pendingBlobs++;
+
+      // async filereader
+      var fileReader = new FileReader();
+      fileReader.onload = function() { // this.result == arraybuffer
+        if (containingObject) {
+          containingObject[curKey] = this.result;
+        }
+        else {
+          bloblessData = this.result;
+        }
+
+        // if nothing pending its callback time
+        if(! --pendingBlobs) {
+          callback(bloblessData);
+        }
+      };
+
+      fileReader.readAsArrayBuffer(obj); // blob -> arraybuffer
+    } else if (isArray(obj)) { // handle array
+      for (var i = 0; i < obj.length; i++) {
+        _removeBlobs(obj[i], i, obj);
+      }
+    } else if (typeof obj === 'object' && !isBuf(obj)) { // and object
+      for (var key in obj) {
+        _removeBlobs(obj[key], key, obj);
+      }
+    }
+  }
+
+  var pendingBlobs = 0;
+  var bloblessData = data;
+  _removeBlobs(bloblessData);
+  if (!pendingBlobs) {
+    callback(bloblessData);
+  }
+};
@@ -0,0 +1,417 @@
+
+/**
+ * Module dependencies.
+ */
+
+var debug = require('debug')('socket.io-parser');
+var Emitter = require('component-emitter');
+var binary = require('./binary');
+var isArray = require('isarray');
+var isBuf = require('./is-buffer');
+
+/**
+ * Protocol version.
+ *
+ * @api public
+ */
+
+exports.protocol = 4;
+
+/**
+ * Packet types.
+ *
+ * @api public
+ */
+
+exports.types = [
+  'CONNECT',
+  'DISCONNECT',
+  'EVENT',
+  'ACK',
+  'ERROR',
+  'BINARY_EVENT',
+  'BINARY_ACK'
+];
+
+/**
+ * Packet type `connect`.
+ *
+ * @api public
+ */
+
+exports.CONNECT = 0;
+
+/**
+ * Packet type `disconnect`.
+ *
+ * @api public
+ */
+
+exports.DISCONNECT = 1;
+
+/**
+ * Packet type `event`.
+ *
+ * @api public
+ */
+
+exports.EVENT = 2;
+
+/**
+ * Packet type `ack`.
+ *
+ * @api public
+ */
+
+exports.ACK = 3;
+
+/**
+ * Packet type `error`.
+ *
+ * @api public
+ */
+
+exports.ERROR = 4;
+
+/**
+ * Packet type 'binary event'
+ *
+ * @api public
+ */
+
+exports.BINARY_EVENT = 5;
+
+/**
+ * Packet type `binary ack`. For acks with binary arguments.
+ *
+ * @api public
+ */
+
+exports.BINARY_ACK = 6;
+
+/**
+ * Encoder constructor.
+ *
+ * @api public
+ */
+
+exports.Encoder = Encoder;
+
+/**
+ * Decoder constructor.
+ *
+ * @api public
+ */
+
+exports.Decoder = Decoder;
+
+/**
+ * A socket.io Encoder instance
+ *
+ * @api public
+ */
+
+function Encoder() {}
+
+var ERROR_PACKET = exports.ERROR + '"encode error"';
+
+/**
+ * Encode a packet as a single string if non-binary, or as a
+ * buffer sequence, depending on packet type.
+ *
+ * @param {Object} obj - packet object
+ * @param {Function} callback - function to handle encodings (likely engine.write)
+ * @return Calls callback with Array of encodings
+ * @api public
+ */
+
+Encoder.prototype.encode = function(obj, callback){
+  debug('encoding packet %j', obj);
+
+  if (exports.BINARY_EVENT === obj.type || exports.BINARY_ACK === obj.type) {
+    encodeAsBinary(obj, callback);
+  } else {
+    var encoding = encodeAsString(obj);
+    callback([encoding]);
+  }
+};
+
+/**
+ * Encode packet as string.
+ *
+ * @param {Object} packet
+ * @return {String} encoded
+ * @api private
+ */
+
+function encodeAsString(obj) {
+
+  // first is type
+  var str = '' + obj.type;
+
+  // attachments if we have them
+  if (exports.BINARY_EVENT === obj.type || exports.BINARY_ACK === obj.type) {
+    str += obj.attachments + '-';
+  }
+
+  // if we have a namespace other than `/`
+  // we append it followed by a comma `,`
+  if (obj.nsp && '/' !== obj.nsp) {
+    str += obj.nsp + ',';
+  }
+
+  // immediately followed by the id
+  if (null != obj.id) {
+    str += obj.id;
+  }
+
+  // json data
+  if (null != obj.data) {
+    var payload = tryStringify(obj.data);
+    if (payload !== false) {
+      str += payload;
+    } else {
+      return ERROR_PACKET;
+    }
+  }
+
+  debug('encoded %j as %s', obj, str);
+  return str;
+}
+
+function tryStringify(str) {
+  try {
+    return JSON.stringify(str);
+  } catch(e){
+    return false;
+  }
+}
+
+/**
+ * Encode packet as 'buffer sequence' by removing blobs, and
+ * deconstructing packet into object with placeholders and
+ * a list of buffers.
+ *
+ * @param {Object} packet
+ * @return {Buffer} encoded
+ * @api private
+ */
+
+function encodeAsBinary(obj, callback) {
+
+  function writeEncoding(bloblessData) {
+    var deconstruction = binary.deconstructPacket(bloblessData);
+    var pack = encodeAsString(deconstruction.packet);
+    var buffers = deconstruction.buffers;
+
+    buffers.unshift(pack); // add packet info to beginning of data list
+    callback(buffers); // write all the buffers
+  }
+
+  binary.removeBlobs(obj, writeEncoding);
+}
+
+/**
+ * A socket.io Decoder instance
+ *
+ * @return {Object} decoder
+ * @api public
+ */
+
+function Decoder() {
+  this.reconstructor = null;
+}
+
+/**
+ * Mix in `Emitter` with Decoder.
+ */
+
+Emitter(Decoder.prototype);
+
+/**
+ * Decodes an ecoded packet string into packet JSON.
+ *
+ * @param {String} obj - encoded packet
+ * @return {Object} packet
+ * @api public
+ */
+
+Decoder.prototype.add = function(obj) {
+  var packet;
+  if (typeof obj === 'string') {
+    packet = decodeString(obj);
+    if (exports.BINARY_EVENT === packet.type || exports.BINARY_ACK === packet.type) { // binary packet's json
+      this.reconstructor = new BinaryReconstructor(packet);
+
+      // no attachments, labeled binary but no binary data to follow
+      if (this.reconstructor.reconPack.attachments === 0) {
+        this.emit('decoded', packet);
+      }
+    } else { // non-binary full packet
+      this.emit('decoded', packet);
+    }
+  }
+  else if (isBuf(obj) || obj.base64) { // raw binary data
+    if (!this.reconstructor) {
+      throw new Error('got binary data when not reconstructing a packet');
+    } else {
+      packet = this.reconstructor.takeBinaryData(obj);
+      if (packet) { // received final buffer
+        this.reconstructor = null;
+        this.emit('decoded', packet);
+      }
+    }
+  }
+  else {
+    throw new Error('Unknown type: ' + obj);
+  }
+};
+
+/**
+ * Decode a packet String (JSON data)
+ *
+ * @param {String} str
+ * @return {Object} packet
+ * @api private
+ */
+
+function decodeString(str) {
+  var i = 0;
+  // look up type
+  var p = {
+    type: Number(str.charAt(0))
+  };
+
+  if (null == exports.types[p.type]) {
+    return error('unknown packet type ' + p.type);
+  }
+
+  // look up attachments if type binary
+  if (exports.BINARY_EVENT === p.type || exports.BINARY_ACK === p.type) {
+    var buf = '';
+    while (str.charAt(++i) !== '-') {
+      buf += str.charAt(i);
+      if (i == str.length) break;
+    }
+    if (buf != Number(buf) || str.charAt(i) !== '-') {
+      throw new Error('Illegal attachments');
+    }
+    p.attachments = Number(buf);
+  }
+
+  // look up namespace (if any)
+  if ('/' === str.charAt(i + 1)) {
+    p.nsp = '';
+    while (++i) {
+      var c = str.charAt(i);
+      if (',' === c) break;
+      p.nsp += c;
+      if (i === str.length) break;
+    }
+  } else {
+    p.nsp = '/';
+  }
+
+  // look up id
+  var next = str.charAt(i + 1);
+  if ('' !== next && Number(next) == next) {
+    p.id = '';
+    while (++i) {
+      var c = str.charAt(i);
+      if (null == c || Number(c) != c) {
+        --i;
+        break;
+      }
+      p.id += str.charAt(i);
+      if (i === str.length) break;
+    }
+    p.id = Number(p.id);
+  }
+
+  // look up json data
+  if (str.charAt(++i)) {
+    var payload = tryParse(str.substr(i));
+    var isPayloadValid = payload !== false && (p.type === exports.ERROR || isArray(payload));
+    if (isPayloadValid) {
+      p.data = payload;
+    } else {
+      return error('invalid payload');
+    }
+  }
+
+  debug('decoded %s as %j', str, p);
+  return p;
+}
+
+function tryParse(str) {
+  try {
+    return JSON.parse(str);
+  } catch(e){
+    return false;
+  }
+}
+
+/**
+ * Deallocates a parser's resources
+ *
+ * @api public
+ */
+
+Decoder.prototype.destroy = function() {
+  if (this.reconstructor) {
+    this.reconstructor.finishedReconstruction();
+  }
+};
+
+/**
+ * A manager of a binary event's 'buffer sequence'. Should
+ * be constructed whenever a packet of type BINARY_EVENT is
+ * decoded.
+ *
+ * @param {Object} packet
+ * @return {BinaryReconstructor} initialized reconstructor
+ * @api private
+ */
+
+function BinaryReconstructor(packet) {
+  this.reconPack = packet;
+  this.buffers = [];
+}
+
+/**
+ * Method to be called when binary data received from connection
+ * after a BINARY_EVENT packet.
+ *
+ * @param {Buffer | ArrayBuffer} binData - the raw binary data received
+ * @return {null | Object} returns null if more binary data is expected or
+ *   a reconstructed packet object if all buffers have been received.
+ * @api private
+ */
+
+BinaryReconstructor.prototype.takeBinaryData = function(binData) {
+  this.buffers.push(binData);
+  if (this.buffers.length === this.reconPack.attachments) { // done with buffer list
+    var packet = binary.reconstructPacket(this.reconPack, this.buffers);
+    this.finishedReconstruction();
+    return packet;
+  }
+  return null;
+};
+
+/**
+ * Cleans up binary packet reconstruction variables.
+ *
+ * @api private
+ */
+
+BinaryReconstructor.prototype.finishedReconstruction = function() {
+  this.reconPack = null;
+  this.buffers = [];
+};
+
+function error(msg) {
+  return {
+    type: exports.ERROR,
+    data: 'parser error: ' + msg
+  };
+}
@@ -0,0 +1,24 @@
+
+module.exports = isBuf;
+
+var withNativeBuffer = typeof global.Buffer === 'function' && typeof global.Buffer.isBuffer === 'function';
+var withNativeArrayBuffer = typeof global.ArrayBuffer === 'function';
+
+var isView = (function () {
+  if (withNativeArrayBuffer && typeof global.ArrayBuffer.isView === 'function') {
+    return global.ArrayBuffer.isView;
+  } else {
+    return function (obj) { return obj.buffer instanceof global.ArrayBuffer; };
+  }
+})();
+
+/**
+ * Returns true if obj is a buffer or an arraybuffer.
+ *
+ * @api private
+ */
+
+function isBuf(obj) {
+  return (withNativeBuffer && global.Buffer.isBuffer(obj)) ||
+          (withNativeArrayBuffer && (obj instanceof global.ArrayBuffer || isView(obj)));
+}
@@ -0,0 +1,61 @@
+{
+  "_from": "socket.io-parser@~3.2.0",
+  "_id": "socket.io-parser@3.2.0",
+  "_inBundle": false,
+  "_integrity": "sha512-FYiBx7rc/KORMJlgsXysflWx/RIvtqZbyGLlHZvjfmPTPeuD/I8MaW7cfFrj5tRltICJdgwflhfZ3NVVbVLFQA==",
+  "_location": "/socket.io/socket.io-parser",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "socket.io-parser@~3.2.0",
+    "name": "socket.io-parser",
+    "escapedName": "socket.io-parser",
+    "rawSpec": "~3.2.0",
+    "saveSpec": null,
+    "fetchSpec": "~3.2.0"
+  },
+  "_requiredBy": [
+    "/socket.io",
+    "/socket.io/socket.io-client"
+  ],
+  "_resolved": "https://registry.npmjs.org/socket.io-parser/-/socket.io-parser-3.2.0.tgz",
+  "_shasum": "e7c6228b6aa1f814e6148aea325b51aa9499e077",
+  "_spec": "socket.io-parser@~3.2.0",
+  "_where": "/srv/http/mmap_sarrebourg/user/themes/basic/node_modules/socket.io",
+  "bugs": {
+    "url": "https://github.com/Automattic/socket.io-parser/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "component-emitter": "1.2.1",
+    "debug": "~3.1.0",
+    "isarray": "2.0.1"
+  },
+  "deprecated": false,
+  "description": "socket.io protocol parser",
+  "devDependencies": {
+    "benchmark": "2.1.2",
+    "expect.js": "0.3.1",
+    "mocha": "3.2.0",
+    "socket.io-browsers": "^1.0.0",
+    "zuul": "3.11.1",
+    "zuul-ngrok": "4.0.0"
+  },
+  "files": [
+    "binary.js",
+    "index.js",
+    "is-buffer.js"
+  ],
+  "homepage": "https://github.com/Automattic/socket.io-parser#readme",
+  "license": "MIT",
+  "name": "socket.io-parser",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/Automattic/socket.io-parser.git"
+  },
+  "scripts": {
+    "test": "make test"
+  },
+  "version": "3.2.0"
+}
@@ -0,0 +1,21 @@
+The MIT License (MIT)
+
+Copyright (c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
@@ -0,0 +1,341 @@
+# ws: a Node.js WebSocket library
+
+[![Version npm](https://img.shields.io/npm/v/ws.svg)](https://www.npmjs.com/package/ws)
+[![Linux Build](https://img.shields.io/travis/websockets/ws/master.svg)](https://travis-ci.org/websockets/ws)
+[![Windows Build](https://ci.appveyor.com/api/projects/status/github/websockets/ws?branch=master&svg=true)](https://ci.appveyor.com/project/lpinca/ws)
+[![Coverage Status](https://img.shields.io/coveralls/websockets/ws/master.svg)](https://coveralls.io/r/websockets/ws?branch=master)
+
+ws is a simple to use, blazing fast, and thoroughly tested WebSocket client
+and server implementation.
+
+Passes the quite extensive Autobahn test suite: [server][server-report],
+[client][client-report].
+
+**Note**: This module does not work in the browser. The client in the docs is a
+reference to a back end with the role of a client in the WebSocket
+communication. Browser clients must use the native
+[`WebSocket`](https://developer.mozilla.org/en-US/docs/Web/API/WebSocket) object.
+
+## Table of Contents
+
+* [Protocol support](#protocol-support)
+* [Installing](#installing)
+  + [Opt-in for performance and spec compliance](#opt-in-for-performance-and-spec-compliance)
+* [API docs](#api-docs)
+* [WebSocket compression](#websocket-compression)
+* [Usage examples](#usage-examples)
+  + [Sending and receiving text data](#sending-and-receiving-text-data)
+  + [Sending binary data](#sending-binary-data)
+  + [Server example](#server-example)
+  + [Broadcast example](#broadcast-example)
+  + [ExpressJS example](#expressjs-example)
+  + [echo.websocket.org demo](#echowebsocketorg-demo)
+  + [Other examples](#other-examples)
+* [Error handling best practices](#error-handling-best-practices)
+* [FAQ](#faq)
+  + [How to get the IP address of the client?](#how-to-get-the-ip-address-of-the-client)
+  + [How to detect and close broken connections?](#how-to-detect-and-close-broken-connections)
+  + [How to connect via a proxy?](#how-to-connect-via-a-proxy)
+* [Changelog](#changelog)
+* [License](#license)
+
+## Protocol support
+
+* **HyBi drafts 07-12** (Use the option `protocolVersion: 8`)
+* **HyBi drafts 13-17** (Current default, alternatively option `protocolVersion: 13`)
+
+## Installing
+
+```
+npm install --save ws
+```
+
+### Opt-in for performance and spec compliance
+
+There are 2 optional modules that can be installed along side with the ws
+module. These modules are binary addons which improve certain operations.
+Prebuilt binaries are available for the most popular platforms so you don't
+necessarily need to have a C++ compiler installed on your machine.
+
+- `npm install --save-optional bufferutil`: Allows to efficiently perform
+  operations such as masking and unmasking the data payload of the WebSocket
+  frames.
+- `npm install --save-optional utf-8-validate`: Allows to efficiently check
+  if a message contains valid UTF-8 as required by the spec.
+
+## API docs
+
+See [`/doc/ws.md`](./doc/ws.md) for Node.js-like docs for the ws classes.
+
+## WebSocket compression
+
+ws supports the [permessage-deflate extension][permessage-deflate] which
+enables the client and server to negotiate a compression algorithm and its
+parameters, and then selectively apply it to the data payloads of each
+WebSocket message.
+
+The extension is disabled by default on the server and enabled by default on
+the client. It adds a significant overhead in terms of performance and memory
+consumption so we suggest to enable it only if it is really needed.
+
+The client will only use the extension if it is supported and enabled on the
+server. To always disable the extension on the client set the
+`perMessageDeflate` option to `false`.
+
+```js
+const WebSocket = require('ws');
+
+const ws = new WebSocket('ws://www.host.com/path', {
+  perMessageDeflate: false
+});
+```
+
+## Usage examples
+
+### Sending and receiving text data
+
+```js
+const WebSocket = require('ws');
+
+const ws = new WebSocket('ws://www.host.com/path');
+
+ws.on('open', function open() {
+  ws.send('something');
+});
+
+ws.on('message', function incoming(data) {
+  console.log(data);
+});
+```
+
+### Sending binary data
+
+```js
+const WebSocket = require('ws');
+
+const ws = new WebSocket('ws://www.host.com/path');
+
+ws.on('open', function open() {
+  const array = new Float32Array(5);
+
+  for (var i = 0; i < array.length; ++i) {
+    array[i] = i / 2;
+  }
+
+  ws.send(array);
+});
+```
+
+### Server example
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({ port: 8080 });
+
+wss.on('connection', function connection(ws) {
+  ws.on('message', function incoming(message) {
+    console.log('received: %s', message);
+  });
+
+  ws.send('something');
+});
+```
+
+### Broadcast example
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({ port: 8080 });
+
+// Broadcast to all.
+wss.broadcast = function broadcast(data) {
+  wss.clients.forEach(function each(client) {
+    if (client.readyState === WebSocket.OPEN) {
+      client.send(data);
+    }
+  });
+};
+
+wss.on('connection', function connection(ws) {
+  ws.on('message', function incoming(data) {
+    // Broadcast to everyone else.
+    wss.clients.forEach(function each(client) {
+      if (client !== ws && client.readyState === WebSocket.OPEN) {
+        client.send(data);
+      }
+    });
+  });
+});
+```
+
+### ExpressJS example
+
+```js
+const express = require('express');
+const http = require('http');
+const url = require('url');
+const WebSocket = require('ws');
+
+const app = express();
+
+app.use(function (req, res) {
+  res.send({ msg: "hello" });
+});
+
+const server = http.createServer(app);
+const wss = new WebSocket.Server({ server });
+
+wss.on('connection', function connection(ws, req) {
+  const location = url.parse(req.url, true);
+  // You might use location.query.access_token to authenticate or share sessions
+  // or req.headers.cookie (see http://stackoverflow.com/a/16395220/151312)
+
+  ws.on('message', function incoming(message) {
+    console.log('received: %s', message);
+  });
+
+  ws.send('something');
+});
+
+server.listen(8080, function listening() {
+  console.log('Listening on %d', server.address().port);
+});
+```
+
+### echo.websocket.org demo
+
+```js
+const WebSocket = require('ws');
+
+const ws = new WebSocket('wss://echo.websocket.org/', {
+  origin: 'https://websocket.org'
+});
+
+ws.on('open', function open() {
+  console.log('connected');
+  ws.send(Date.now());
+});
+
+ws.on('close', function close() {
+  console.log('disconnected');
+});
+
+ws.on('message', function incoming(data) {
+  console.log(`Roundtrip time: ${Date.now() - data} ms`);
+
+  setTimeout(function timeout() {
+    ws.send(Date.now());
+  }, 500);
+});
+```
+
+### Other examples
+
+For a full example with a browser client communicating with a ws server, see the
+examples folder.
+
+Otherwise, see the test cases.
+
+## Error handling best practices
+
+```js
+// If the WebSocket is closed before the following send is attempted
+ws.send('something');
+
+// Errors (both immediate and async write errors) can be detected in an optional
+// callback. The callback is also the only way of being notified that data has
+// actually been sent.
+ws.send('something', function ack(error) {
+  // If error is not defined, the send has been completed, otherwise the error
+  // object will indicate what failed.
+});
+
+// Immediate errors can also be handled with `try...catch`, but **note** that
+// since sends are inherently asynchronous, socket write failures will *not* be
+// captured when this technique is used.
+try { ws.send('something'); }
+catch (e) { /* handle error */ }
+```
+
+## FAQ
+
+### How to get the IP address of the client?
+
+The remote IP address can be obtained from the raw socket.
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({ port: 8080 });
+
+wss.on('connection', function connection(ws, req) {
+  const ip = req.connection.remoteAddress;
+});
+```
+
+When the server runs behind a proxy like NGINX, the de-facto standard is to use
+the `X-Forwarded-For` header.
+
+```js
+wss.on('connection', function connection(ws, req) {
+  const ip = req.headers['x-forwarded-for'];
+});
+```
+
+### How to detect and close broken connections?
+
+Sometimes the link between the server and the client can be interrupted in a
+way that keeps both the server and the client unaware of the broken state of the
+connection (e.g. when pulling the cord).
+
+In these cases ping messages can be used as a means to verify that the remote
+endpoint is still responsive.
+
+```js
+const WebSocket = require('ws');
+
+const wss = new WebSocket.Server({ port: 8080 });
+
+function heartbeat() {
+  this.isAlive = true;
+}
+
+wss.on('connection', function connection(ws) {
+  ws.isAlive = true;
+  ws.on('pong', heartbeat);
+});
+
+const interval = setInterval(function ping() {
+  wss.clients.forEach(function each(ws) {
+    if (ws.isAlive === false) return ws.terminate();
+
+    ws.isAlive = false;
+    ws.ping('', false, true);
+  });
+}, 30000);
+```
+
+Pong messages are automatically sent in response to ping messages as required
+by the spec.
+
+### How to connect via a proxy?
+
+Use a custom `http.Agent` implementation like [https-proxy-agent][] or
+[socks-proxy-agent][].
+
+## Changelog
+
+We're using the GitHub [releases][changelog] for changelog entries.
+
+## License
+
+[MIT](LICENSE)
+
+[https-proxy-agent]: https://github.com/TooTallNate/node-https-proxy-agent
+[socks-proxy-agent]: https://github.com/TooTallNate/node-socks-proxy-agent
+[client-report]: http://websockets.github.io/ws/autobahn/clients/
+[server-report]: http://websockets.github.io/ws/autobahn/servers/
+[permessage-deflate]: https://tools.ietf.org/html/rfc7692
+[changelog]: https://github.com/websockets/ws/releases
@@ -0,0 +1,15 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const WebSocket = require('./lib/WebSocket');
+
+WebSocket.Server = require('./lib/WebSocketServer');
+WebSocket.Receiver = require('./lib/Receiver');
+WebSocket.Sender = require('./lib/Sender');
+
+module.exports = WebSocket;
@@ -0,0 +1,71 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const safeBuffer = require('safe-buffer');
+
+const Buffer = safeBuffer.Buffer;
+
+/**
+ * Merges an array of buffers into a new buffer.
+ *
+ * @param {Buffer[]} list The array of buffers to concat
+ * @param {Number} totalLength The total length of buffers in the list
+ * @return {Buffer} The resulting buffer
+ * @public
+ */
+const concat = (list, totalLength) => {
+  const target = Buffer.allocUnsafe(totalLength);
+  var offset = 0;
+
+  for (var i = 0; i < list.length; i++) {
+    const buf = list[i];
+    buf.copy(target, offset);
+    offset += buf.length;
+  }
+
+  return target;
+};
+
+try {
+  const bufferUtil = require('bufferutil');
+
+  module.exports = Object.assign({ concat }, bufferUtil.BufferUtil || bufferUtil);
+} catch (e) /* istanbul ignore next */ {
+  /**
+   * Masks a buffer using the given mask.
+   *
+   * @param {Buffer} source The buffer to mask
+   * @param {Buffer} mask The mask to use
+   * @param {Buffer} output The buffer where to store the result
+   * @param {Number} offset The offset at which to start writing
+   * @param {Number} length The number of bytes to mask.
+   * @public
+   */
+  const mask = (source, mask, output, offset, length) => {
+    for (var i = 0; i < length; i++) {
+      output[offset + i] = source[i] ^ mask[i & 3];
+    }
+  };
+
+  /**
+   * Unmasks a buffer using the given mask.
+   *
+   * @param {Buffer} buffer The buffer to unmask
+   * @param {Buffer} mask The mask to use
+   * @public
+   */
+  const unmask = (buffer, mask) => {
+    // Required until https://github.com/nodejs/node/issues/9006 is resolved.
+    const length = buffer.length;
+    for (var i = 0; i < length; i++) {
+      buffer[i] ^= mask[i & 3];
+    }
+  };
+
+  module.exports = { concat, mask, unmask };
+}
@@ -0,0 +1,10 @@
+'use strict';
+
+const safeBuffer = require('safe-buffer');
+
+const Buffer = safeBuffer.Buffer;
+
+exports.BINARY_TYPES = ['nodebuffer', 'arraybuffer', 'fragments'];
+exports.GUID = '258EAFA5-E914-47DA-95CA-C5AB0DC85B11';
+exports.EMPTY_BUFFER = Buffer.alloc(0);
+exports.NOOP = () => {};
@@ -0,0 +1,28 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+module.exports = {
+  isValidErrorCode: function (code) {
+    return (code >= 1000 && code <= 1013 && code !== 1004 && code !== 1005 && code !== 1006) ||
+      (code >= 3000 && code <= 4999);
+  },
+  1000: 'normal',
+  1001: 'going away',
+  1002: 'protocol error',
+  1003: 'unsupported data',
+  1004: 'reserved',
+  1005: 'reserved for extensions',
+  1006: 'reserved for extensions',
+  1007: 'inconsistent or invalid data',
+  1008: 'policy violation',
+  1009: 'message too big',
+  1010: 'extension handshake missing',
+  1011: 'an unexpected condition prevented the request from being fulfilled',
+  1012: 'service restart',
+  1013: 'try again later'
+};
@@ -0,0 +1,151 @@
+'use strict';
+
+/**
+ * Class representing an event.
+ *
+ * @private
+ */
+class Event {
+  /**
+   * Create a new `Event`.
+   *
+   * @param {String} type The name of the event
+   * @param {Object} target A reference to the target to which the event was dispatched
+   */
+  constructor (type, target) {
+    this.target = target;
+    this.type = type;
+  }
+}
+
+/**
+ * Class representing a message event.
+ *
+ * @extends Event
+ * @private
+ */
+class MessageEvent extends Event {
+  /**
+   * Create a new `MessageEvent`.
+   *
+   * @param {(String|Buffer|ArrayBuffer|Buffer[])} data The received data
+   * @param {WebSocket} target A reference to the target to which the event was dispatched
+   */
+  constructor (data, target) {
+    super('message', target);
+
+    this.data = data;
+  }
+}
+
+/**
+ * Class representing a close event.
+ *
+ * @extends Event
+ * @private
+ */
+class CloseEvent extends Event {
+  /**
+   * Create a new `CloseEvent`.
+   *
+   * @param {Number} code The status code explaining why the connection is being closed
+   * @param {String} reason A human-readable string explaining why the connection is closing
+   * @param {WebSocket} target A reference to the target to which the event was dispatched
+   */
+  constructor (code, reason, target) {
+    super('close', target);
+
+    this.wasClean = target._closeFrameReceived && target._closeFrameSent;
+    this.reason = reason;
+    this.code = code;
+  }
+}
+
+/**
+ * Class representing an open event.
+ *
+ * @extends Event
+ * @private
+ */
+class OpenEvent extends Event {
+  /**
+   * Create a new `OpenEvent`.
+   *
+   * @param {WebSocket} target A reference to the target to which the event was dispatched
+   */
+  constructor (target) {
+    super('open', target);
+  }
+}
+
+/**
+ * This provides methods for emulating the `EventTarget` interface. It's not
+ * meant to be used directly.
+ *
+ * @mixin
+ */
+const EventTarget = {
+  /**
+   * Register an event listener.
+   *
+   * @param {String} method A string representing the event type to listen for
+   * @param {Function} listener The listener to add
+   * @public
+   */
+  addEventListener (method, listener) {
+    if (typeof listener !== 'function') return;
+
+    function onMessage (data) {
+      listener.call(this, new MessageEvent(data, this));
+    }
+
+    function onClose (code, message) {
+      listener.call(this, new CloseEvent(code, message, this));
+    }
+
+    function onError (event) {
+      event.type = 'error';
+      event.target = this;
+      listener.call(this, event);
+    }
+
+    function onOpen () {
+      listener.call(this, new OpenEvent(this));
+    }
+
+    if (method === 'message') {
+      onMessage._listener = listener;
+      this.on(method, onMessage);
+    } else if (method === 'close') {
+      onClose._listener = listener;
+      this.on(method, onClose);
+    } else if (method === 'error') {
+      onError._listener = listener;
+      this.on(method, onError);
+    } else if (method === 'open') {
+      onOpen._listener = listener;
+      this.on(method, onOpen);
+    } else {
+      this.on(method, listener);
+    }
+  },
+
+  /**
+   * Remove an event listener.
+   *
+   * @param {String} method A string representing the event type to remove
+   * @param {Function} listener The listener to remove
+   * @public
+   */
+  removeEventListener (method, listener) {
+    const listeners = this.listeners(method);
+
+    for (var i = 0; i < listeners.length; i++) {
+      if (listeners[i] === listener || listeners[i]._listener === listener) {
+        this.removeListener(method, listeners[i]);
+      }
+    }
+  }
+};
+
+module.exports = EventTarget;
@@ -0,0 +1,203 @@
+'use strict';
+
+//
+// Allowed token characters:
+//
+// '!', '#', '$', '%', '&', ''', '*', '+', '-',
+// '.', 0-9, A-Z, '^', '_', '`', a-z, '|', '~'
+//
+// tokenChars[32] === 0 // ' '
+// tokenChars[33] === 1 // '!'
+// tokenChars[34] === 0 // '"'
+// ...
+//
+const tokenChars = [
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 0 - 15
+  0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, // 16 - 31
+  0, 1, 0, 1, 1, 1, 1, 1, 0, 0, 1, 1, 0, 1, 1, 0, // 32 - 47
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 0, 0, 0, // 48 - 63
+  0, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 64 - 79
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 0, 0, 1, 1, // 80 - 95
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, // 96 - 111
+  1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 0, 1, 0, 1, 0 // 112 - 127
+];
+
+/**
+ * Adds an offer to the map of extension offers or a parameter to the map of
+ * parameters.
+ *
+ * @param {Object} dest The map of extension offers or parameters
+ * @param {String} name The extension or parameter name
+ * @param {(Object|Boolean|String)} elem The extension parameters or the
+ *     parameter value
+ * @private
+ */
+function push (dest, name, elem) {
+  if (Object.prototype.hasOwnProperty.call(dest, name)) dest[name].push(elem);
+  else dest[name] = [elem];
+}
+
+/**
+ * Parses the `Sec-WebSocket-Extensions` header into an object.
+ *
+ * @param {String} header The field value of the header
+ * @return {Object} The parsed object
+ * @public
+ */
+function parse (header) {
+  const offers = {};
+
+  if (header === undefined || header === '') return offers;
+
+  var params = {};
+  var mustUnescape = false;
+  var isEscaping = false;
+  var inQuotes = false;
+  var extensionName;
+  var paramName;
+  var start = -1;
+  var end = -1;
+
+  for (var i = 0; i < header.length; i++) {
+    const code = header.charCodeAt(i);
+
+    if (extensionName === undefined) {
+      if (end === -1 && tokenChars[code] === 1) {
+        if (start === -1) start = i;
+      } else if (code === 0x20/* ' ' */|| code === 0x09/* '\t' */) {
+        if (end === -1 && start !== -1) end = i;
+      } else if (code === 0x3b/* ';' */ || code === 0x2c/* ',' */) {
+        if (start === -1) throw new Error(`unexpected character at index ${i}`);
+
+        if (end === -1) end = i;
+        const name = header.slice(start, end);
+        if (code === 0x2c) {
+          push(offers, name, params);
+          params = {};
+        } else {
+          extensionName = name;
+        }
+
+        start = end = -1;
+      } else {
+        throw new Error(`unexpected character at index ${i}`);
+      }
+    } else if (paramName === undefined) {
+      if (end === -1 && tokenChars[code] === 1) {
+        if (start === -1) start = i;
+      } else if (code === 0x20 || code === 0x09) {
+        if (end === -1 && start !== -1) end = i;
+      } else if (code === 0x3b || code === 0x2c) {
+        if (start === -1) throw new Error(`unexpected character at index ${i}`);
+
+        if (end === -1) end = i;
+        push(params, header.slice(start, end), true);
+        if (code === 0x2c) {
+          push(offers, extensionName, params);
+          params = {};
+          extensionName = undefined;
+        }
+
+        start = end = -1;
+      } else if (code === 0x3d/* '=' */&& start !== -1 && end === -1) {
+        paramName = header.slice(start, i);
+        start = end = -1;
+      } else {
+        throw new Error(`unexpected character at index ${i}`);
+      }
+    } else {
+      //
+      // The value of a quoted-string after unescaping must conform to the
+      // token ABNF, so only token characters are valid.
+      // Ref: https://tools.ietf.org/html/rfc6455#section-9.1
+      //
+      if (isEscaping) {
+        if (tokenChars[code] !== 1) {
+          throw new Error(`unexpected character at index ${i}`);
+        }
+        if (start === -1) start = i;
+        else if (!mustUnescape) mustUnescape = true;
+        isEscaping = false;
+      } else if (inQuotes) {
+        if (tokenChars[code] === 1) {
+          if (start === -1) start = i;
+        } else if (code === 0x22/* '"' */ && start !== -1) {
+          inQuotes = false;
+          end = i;
+        } else if (code === 0x5c/* '\' */) {
+          isEscaping = true;
+        } else {
+          throw new Error(`unexpected character at index ${i}`);
+        }
+      } else if (code === 0x22 && header.charCodeAt(i - 1) === 0x3d) {
+        inQuotes = true;
+      } else if (end === -1 && tokenChars[code] === 1) {
+        if (start === -1) start = i;
+      } else if (start !== -1 && (code === 0x20 || code === 0x09)) {
+        if (end === -1) end = i;
+      } else if (code === 0x3b || code === 0x2c) {
+        if (start === -1) throw new Error(`unexpected character at index ${i}`);
+
+        if (end === -1) end = i;
+        var value = header.slice(start, end);
+        if (mustUnescape) {
+          value = value.replace(/\\/g, '');
+          mustUnescape = false;
+        }
+        push(params, paramName, value);
+        if (code === 0x2c) {
+          push(offers, extensionName, params);
+          params = {};
+          extensionName = undefined;
+        }
+
+        paramName = undefined;
+        start = end = -1;
+      } else {
+        throw new Error(`unexpected character at index ${i}`);
+      }
+    }
+  }
+
+  if (start === -1 || inQuotes) throw new Error('unexpected end of input');
+
+  if (end === -1) end = i;
+  const token = header.slice(start, end);
+  if (extensionName === undefined) {
+    push(offers, token, {});
+  } else {
+    if (paramName === undefined) {
+      push(params, token, true);
+    } else if (mustUnescape) {
+      push(params, paramName, token.replace(/\\/g, ''));
+    } else {
+      push(params, paramName, token);
+    }
+    push(offers, extensionName, params);
+  }
+
+  return offers;
+}
+
+/**
+ * Serializes a parsed `Sec-WebSocket-Extensions` header to a string.
+ *
+ * @param {Object} value The object to format
+ * @return {String} A string representing the given value
+ * @public
+ */
+function format (value) {
+  return Object.keys(value).map((token) => {
+    var paramsList = value[token];
+    if (!Array.isArray(paramsList)) paramsList = [paramsList];
+    return paramsList.map((params) => {
+      return [token].concat(Object.keys(params).map((k) => {
+        var p = params[k];
+        if (!Array.isArray(p)) p = [p];
+        return p.map((v) => v === true ? k : `${k}=${v}`).join('; ');
+      })).join('; ');
+    }).join(', ');
+  }).join(', ');
+}
+
+module.exports = { format, parse };
@@ -0,0 +1,507 @@
+'use strict';
+
+const safeBuffer = require('safe-buffer');
+const Limiter = require('async-limiter');
+const zlib = require('zlib');
+
+const bufferUtil = require('./BufferUtil');
+
+const Buffer = safeBuffer.Buffer;
+
+const TRAILER = Buffer.from([0x00, 0x00, 0xff, 0xff]);
+const EMPTY_BLOCK = Buffer.from([0x00]);
+
+const kWriteInProgress = Symbol('write-in-progress');
+const kPendingClose = Symbol('pending-close');
+const kTotalLength = Symbol('total-length');
+const kCallback = Symbol('callback');
+const kBuffers = Symbol('buffers');
+const kError = Symbol('error');
+const kOwner = Symbol('owner');
+
+//
+// We limit zlib concurrency, which prevents severe memory fragmentation
+// as documented in https://github.com/nodejs/node/issues/8871#issuecomment-250915913
+// and https://github.com/websockets/ws/issues/1202
+//
+// Intentionally global; it's the global thread pool that's an issue.
+//
+let zlibLimiter;
+
+/**
+ * permessage-deflate implementation.
+ */
+class PerMessageDeflate {
+  /**
+   * Creates a PerMessageDeflate instance.
+   *
+   * @param {Object} options Configuration options
+   * @param {Boolean} options.serverNoContextTakeover Request/accept disabling
+   *     of server context takeover
+   * @param {Boolean} options.clientNoContextTakeover Advertise/acknowledge
+   *     disabling of client context takeover
+   * @param {(Boolean|Number)} options.serverMaxWindowBits Request/confirm the
+   *     use of a custom server window size
+   * @param {(Boolean|Number)} options.clientMaxWindowBits Advertise support
+   *     for, or request, a custom client window size
+   * @param {Number} options.level The value of zlib's `level` param
+   * @param {Number} options.memLevel The value of zlib's `memLevel` param
+   * @param {Number} options.threshold Size (in bytes) below which messages
+   *     should not be compressed
+   * @param {Number} options.concurrencyLimit The number of concurrent calls to
+   *     zlib
+   * @param {Boolean} isServer Create the instance in either server or client
+   *     mode
+   * @param {Number} maxPayload The maximum allowed message length
+   */
+  constructor (options, isServer, maxPayload) {
+    this._maxPayload = maxPayload | 0;
+    this._options = options || {};
+    this._threshold = this._options.threshold !== undefined
+      ? this._options.threshold
+      : 1024;
+    this._isServer = !!isServer;
+    this._deflate = null;
+    this._inflate = null;
+
+    this.params = null;
+
+    if (!zlibLimiter) {
+      const concurrency = this._options.concurrencyLimit !== undefined
+        ? this._options.concurrencyLimit
+        : 10;
+      zlibLimiter = new Limiter({ concurrency });
+    }
+  }
+
+  /**
+   * @type {String}
+   */
+  static get extensionName () {
+    return 'permessage-deflate';
+  }
+
+  /**
+   * Create extension parameters offer.
+   *
+   * @return {Object} Extension parameters
+   * @public
+   */
+  offer () {
+    const params = {};
+
+    if (this._options.serverNoContextTakeover) {
+      params.server_no_context_takeover = true;
+    }
+    if (this._options.clientNoContextTakeover) {
+      params.client_no_context_takeover = true;
+    }
+    if (this._options.serverMaxWindowBits) {
+      params.server_max_window_bits = this._options.serverMaxWindowBits;
+    }
+    if (this._options.clientMaxWindowBits) {
+      params.client_max_window_bits = this._options.clientMaxWindowBits;
+    } else if (this._options.clientMaxWindowBits == null) {
+      params.client_max_window_bits = true;
+    }
+
+    return params;
+  }
+
+  /**
+   * Accept extension offer.
+   *
+   * @param {Array} paramsList Extension parameters
+   * @return {Object} Accepted configuration
+   * @public
+   */
+  accept (paramsList) {
+    paramsList = this.normalizeParams(paramsList);
+
+    var params;
+    if (this._isServer) {
+      params = this.acceptAsServer(paramsList);
+    } else {
+      params = this.acceptAsClient(paramsList);
+    }
+
+    this.params = params;
+    return params;
+  }
+
+  /**
+   * Releases all resources used by the extension.
+   *
+   * @public
+   */
+  cleanup () {
+    if (this._inflate) {
+      if (this._inflate[kWriteInProgress]) {
+        this._inflate[kPendingClose] = true;
+      } else {
+        this._inflate.close();
+        this._inflate = null;
+      }
+    }
+    if (this._deflate) {
+      if (this._deflate[kWriteInProgress]) {
+        this._deflate[kPendingClose] = true;
+      } else {
+        this._deflate.close();
+        this._deflate = null;
+      }
+    }
+  }
+
+  /**
+   * Accept extension offer from client.
+   *
+   * @param {Array} paramsList Extension parameters
+   * @return {Object} Accepted configuration
+   * @private
+   */
+  acceptAsServer (paramsList) {
+    const accepted = {};
+    const result = paramsList.some((params) => {
+      if (
+        (this._options.serverNoContextTakeover === false &&
+          params.server_no_context_takeover) ||
+        (this._options.serverMaxWindowBits === false &&
+          params.server_max_window_bits) ||
+        (typeof this._options.serverMaxWindowBits === 'number' &&
+          typeof params.server_max_window_bits === 'number' &&
+          this._options.serverMaxWindowBits > params.server_max_window_bits) ||
+        (typeof this._options.clientMaxWindowBits === 'number' &&
+          !params.client_max_window_bits)
+      ) {
+        return;
+      }
+
+      if (
+        this._options.serverNoContextTakeover ||
+        params.server_no_context_takeover
+      ) {
+        accepted.server_no_context_takeover = true;
+      }
+      if (
+        this._options.clientNoContextTakeover ||
+        (this._options.clientNoContextTakeover !== false &&
+          params.client_no_context_takeover)
+      ) {
+        accepted.client_no_context_takeover = true;
+      }
+      if (typeof this._options.serverMaxWindowBits === 'number') {
+        accepted.server_max_window_bits = this._options.serverMaxWindowBits;
+      } else if (typeof params.server_max_window_bits === 'number') {
+        accepted.server_max_window_bits = params.server_max_window_bits;
+      }
+      if (typeof this._options.clientMaxWindowBits === 'number') {
+        accepted.client_max_window_bits = this._options.clientMaxWindowBits;
+      } else if (
+        this._options.clientMaxWindowBits !== false &&
+        typeof params.client_max_window_bits === 'number'
+      ) {
+        accepted.client_max_window_bits = params.client_max_window_bits;
+      }
+      return true;
+    });
+
+    if (!result) throw new Error("Doesn't support the offered configuration");
+
+    return accepted;
+  }
+
+  /**
+   * Accept extension response from server.
+   *
+   * @param {Array} paramsList Extension parameters
+   * @return {Object} Accepted configuration
+   * @private
+   */
+  acceptAsClient (paramsList) {
+    const params = paramsList[0];
+
+    if (
+      this._options.clientNoContextTakeover === false &&
+      params.client_no_context_takeover
+    ) {
+      throw new Error('Invalid value for "client_no_context_takeover"');
+    }
+
+    if (
+      (typeof this._options.clientMaxWindowBits === 'number' &&
+        (!params.client_max_window_bits ||
+          params.client_max_window_bits > this._options.clientMaxWindowBits)) ||
+      (this._options.clientMaxWindowBits === false &&
+        params.client_max_window_bits)
+    ) {
+      throw new Error('Invalid value for "client_max_window_bits"');
+    }
+
+    return params;
+  }
+
+  /**
+   * Normalize extensions parameters.
+   *
+   * @param {Array} paramsList Extension parameters
+   * @return {Array} Normalized extensions parameters
+   * @private
+   */
+  normalizeParams (paramsList) {
+    return paramsList.map((params) => {
+      Object.keys(params).forEach((key) => {
+        var value = params[key];
+        if (value.length > 1) {
+          throw new Error(`Multiple extension parameters for ${key}`);
+        }
+
+        value = value[0];
+
+        switch (key) {
+          case 'server_no_context_takeover':
+          case 'client_no_context_takeover':
+            if (value !== true) {
+              throw new Error(`invalid extension parameter value for ${key} (${value})`);
+            }
+            params[key] = true;
+            break;
+          case 'server_max_window_bits':
+          case 'client_max_window_bits':
+            if (typeof value === 'string') {
+              value = parseInt(value, 10);
+              if (
+                Number.isNaN(value) ||
+                value < zlib.Z_MIN_WINDOWBITS ||
+                value > zlib.Z_MAX_WINDOWBITS
+              ) {
+                throw new Error(`invalid extension parameter value for ${key} (${value})`);
+              }
+            }
+            if (!this._isServer && value === true) {
+              throw new Error(`Missing extension parameter value for ${key}`);
+            }
+            params[key] = value;
+            break;
+          default:
+            throw new Error(`Not defined extension parameter (${key})`);
+        }
+      });
+      return params;
+    });
+  }
+
+  /**
+   * Decompress data. Concurrency limited by async-limiter.
+   *
+   * @param {Buffer} data Compressed data
+   * @param {Boolean} fin Specifies whether or not this is the last fragment
+   * @param {Function} callback Callback
+   * @public
+   */
+  decompress (data, fin, callback) {
+    zlibLimiter.push((done) => {
+      this._decompress(data, fin, (err, result) => {
+        done();
+        callback(err, result);
+      });
+    });
+  }
+
+  /**
+   * Compress data. Concurrency limited by async-limiter.
+   *
+   * @param {Buffer} data Data to compress
+   * @param {Boolean} fin Specifies whether or not this is the last fragment
+   * @param {Function} callback Callback
+   * @public
+   */
+  compress (data, fin, callback) {
+    zlibLimiter.push((done) => {
+      this._compress(data, fin, (err, result) => {
+        done();
+        callback(err, result);
+      });
+    });
+  }
+
+  /**
+   * Decompress data.
+   *
+   * @param {Buffer} data Compressed data
+   * @param {Boolean} fin Specifies whether or not this is the last fragment
+   * @param {Function} callback Callback
+   * @private
+   */
+  _decompress (data, fin, callback) {
+    const endpoint = this._isServer ? 'client' : 'server';
+
+    if (!this._inflate) {
+      const key = `${endpoint}_max_window_bits`;
+      const windowBits = typeof this.params[key] !== 'number'
+        ? zlib.Z_DEFAULT_WINDOWBITS
+        : this.params[key];
+
+      this._inflate = zlib.createInflateRaw({ windowBits });
+      this._inflate[kTotalLength] = 0;
+      this._inflate[kBuffers] = [];
+      this._inflate[kOwner] = this;
+      this._inflate.on('error', inflateOnError);
+      this._inflate.on('data', inflateOnData);
+    }
+
+    this._inflate[kCallback] = callback;
+    this._inflate[kWriteInProgress] = true;
+
+    this._inflate.write(data);
+    if (fin) this._inflate.write(TRAILER);
+
+    this._inflate.flush(() => {
+      const err = this._inflate[kError];
+
+      if (err) {
+        this._inflate.close();
+        this._inflate = null;
+        callback(err);
+        return;
+      }
+
+      const data = bufferUtil.concat(
+        this._inflate[kBuffers],
+        this._inflate[kTotalLength]
+      );
+
+      if (
+        (fin && this.params[`${endpoint}_no_context_takeover`]) ||
+        this._inflate[kPendingClose]
+      ) {
+        this._inflate.close();
+        this._inflate = null;
+      } else {
+        this._inflate[kWriteInProgress] = false;
+        this._inflate[kTotalLength] = 0;
+        this._inflate[kBuffers] = [];
+      }
+
+      callback(null, data);
+    });
+  }
+
+  /**
+   * Compress data.
+   *
+   * @param {Buffer} data Data to compress
+   * @param {Boolean} fin Specifies whether or not this is the last fragment
+   * @param {Function} callback Callback
+   * @private
+   */
+  _compress (data, fin, callback) {
+    if (!data || data.length === 0) {
+      process.nextTick(callback, null, EMPTY_BLOCK);
+      return;
+    }
+
+    const endpoint = this._isServer ? 'server' : 'client';
+
+    if (!this._deflate) {
+      const key = `${endpoint}_max_window_bits`;
+      const windowBits = typeof this.params[key] !== 'number'
+        ? zlib.Z_DEFAULT_WINDOWBITS
+        : this.params[key];
+
+      this._deflate = zlib.createDeflateRaw({
+        memLevel: this._options.memLevel,
+        level: this._options.level,
+        flush: zlib.Z_SYNC_FLUSH,
+        windowBits
+      });
+
+      this._deflate[kTotalLength] = 0;
+      this._deflate[kBuffers] = [];
+
+      //
+      // `zlib.DeflateRaw` emits an `'error'` event only when an attempt to use
+      // it is made after it has already been closed. This cannot happen here,
+      // so we only add a listener for the `'data'` event.
+      //
+      this._deflate.on('data', deflateOnData);
+    }
+
+    this._deflate[kWriteInProgress] = true;
+
+    this._deflate.write(data);
+    this._deflate.flush(zlib.Z_SYNC_FLUSH, () => {
+      var data = bufferUtil.concat(
+        this._deflate[kBuffers],
+        this._deflate[kTotalLength]
+      );
+
+      if (fin) data = data.slice(0, data.length - 4);
+
+      if (
+        (fin && this.params[`${endpoint}_no_context_takeover`]) ||
+        this._deflate[kPendingClose]
+      ) {
+        this._deflate.close();
+        this._deflate = null;
+      } else {
+        this._deflate[kWriteInProgress] = false;
+        this._deflate[kTotalLength] = 0;
+        this._deflate[kBuffers] = [];
+      }
+
+      callback(null, data);
+    });
+  }
+}
+
+module.exports = PerMessageDeflate;
+
+/**
+ * The listener of the `zlib.DeflateRaw` stream `'data'` event.
+ *
+ * @param {Buffer} chunk A chunk of data
+ * @private
+ */
+function deflateOnData (chunk) {
+  this[kBuffers].push(chunk);
+  this[kTotalLength] += chunk.length;
+}
+
+/**
+ * The listener of the `zlib.InflateRaw` stream `'data'` event.
+ *
+ * @param {Buffer} chunk A chunk of data
+ * @private
+ */
+function inflateOnData (chunk) {
+  this[kTotalLength] += chunk.length;
+
+  if (
+    this[kOwner]._maxPayload < 1 ||
+    this[kTotalLength] <= this[kOwner]._maxPayload
+  ) {
+    this[kBuffers].push(chunk);
+    return;
+  }
+
+  this[kError] = new Error('max payload size exceeded');
+  this[kError].closeCode = 1009;
+  this.removeListener('data', inflateOnData);
+  this.reset();
+}
+
+/**
+ * The listener of the `zlib.InflateRaw` stream `'error'` event.
+ *
+ * @param {Error} err The emitted error
+ * @private
+ */
+function inflateOnError (err) {
+  //
+  // There is no need to call `Zlib#close()` as the handle is automatically
+  // closed when an error is emitted.
+  //
+  this[kOwner]._inflate = null;
+  this[kCallback](err);
+}
@@ -0,0 +1,553 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const safeBuffer = require('safe-buffer');
+
+const PerMessageDeflate = require('./PerMessageDeflate');
+const isValidUTF8 = require('./Validation');
+const bufferUtil = require('./BufferUtil');
+const ErrorCodes = require('./ErrorCodes');
+const constants = require('./Constants');
+
+const Buffer = safeBuffer.Buffer;
+
+const GET_INFO = 0;
+const GET_PAYLOAD_LENGTH_16 = 1;
+const GET_PAYLOAD_LENGTH_64 = 2;
+const GET_MASK = 3;
+const GET_DATA = 4;
+const INFLATING = 5;
+
+/**
+ * HyBi Receiver implementation.
+ */
+class Receiver {
+  /**
+   * Creates a Receiver instance.
+   *
+   * @param {Object} extensions An object containing the negotiated extensions
+   * @param {Number} maxPayload The maximum allowed message length
+   * @param {String} binaryType The type for binary data
+   */
+  constructor (extensions, maxPayload, binaryType) {
+    this._binaryType = binaryType || constants.BINARY_TYPES[0];
+    this._extensions = extensions || {};
+    this._maxPayload = maxPayload | 0;
+
+    this._bufferedBytes = 0;
+    this._buffers = [];
+
+    this._compressed = false;
+    this._payloadLength = 0;
+    this._fragmented = 0;
+    this._masked = false;
+    this._fin = false;
+    this._mask = null;
+    this._opcode = 0;
+
+    this._totalPayloadLength = 0;
+    this._messageLength = 0;
+    this._fragments = [];
+
+    this._cleanupCallback = null;
+    this._hadError = false;
+    this._dead = false;
+    this._loop = false;
+
+    this.onmessage = null;
+    this.onclose = null;
+    this.onerror = null;
+    this.onping = null;
+    this.onpong = null;
+
+    this._state = GET_INFO;
+  }
+
+  /**
+   * Consumes bytes from the available buffered data.
+   *
+   * @param {Number} bytes The number of bytes to consume
+   * @return {Buffer} Consumed bytes
+   * @private
+   */
+  readBuffer (bytes) {
+    var offset = 0;
+    var dst;
+    var l;
+
+    this._bufferedBytes -= bytes;
+
+    if (bytes === this._buffers[0].length) return this._buffers.shift();
+
+    if (bytes < this._buffers[0].length) {
+      dst = this._buffers[0].slice(0, bytes);
+      this._buffers[0] = this._buffers[0].slice(bytes);
+      return dst;
+    }
+
+    dst = Buffer.allocUnsafe(bytes);
+
+    while (bytes > 0) {
+      l = this._buffers[0].length;
+
+      if (bytes >= l) {
+        this._buffers[0].copy(dst, offset);
+        offset += l;
+        this._buffers.shift();
+      } else {
+        this._buffers[0].copy(dst, offset, 0, bytes);
+        this._buffers[0] = this._buffers[0].slice(bytes);
+      }
+
+      bytes -= l;
+    }
+
+    return dst;
+  }
+
+  /**
+   * Checks if the number of buffered bytes is bigger or equal than `n` and
+   * calls `cleanup` if necessary.
+   *
+   * @param {Number} n The number of bytes to check against
+   * @return {Boolean} `true` if `bufferedBytes >= n`, else `false`
+   * @private
+   */
+  hasBufferedBytes (n) {
+    if (this._bufferedBytes >= n) return true;
+
+    this._loop = false;
+    if (this._dead) this.cleanup(this._cleanupCallback);
+    return false;
+  }
+
+  /**
+   * Adds new data to the parser.
+   *
+   * @public
+   */
+  add (data) {
+    if (this._dead) return;
+
+    this._bufferedBytes += data.length;
+    this._buffers.push(data);
+    this.startLoop();
+  }
+
+  /**
+   * Starts the parsing loop.
+   *
+   * @private
+   */
+  startLoop () {
+    this._loop = true;
+
+    while (this._loop) {
+      switch (this._state) {
+        case GET_INFO:
+          this.getInfo();
+          break;
+        case GET_PAYLOAD_LENGTH_16:
+          this.getPayloadLength16();
+          break;
+        case GET_PAYLOAD_LENGTH_64:
+          this.getPayloadLength64();
+          break;
+        case GET_MASK:
+          this.getMask();
+          break;
+        case GET_DATA:
+          this.getData();
+          break;
+        default: // `INFLATING`
+          this._loop = false;
+      }
+    }
+  }
+
+  /**
+   * Reads the first two bytes of a frame.
+   *
+   * @private
+   */
+  getInfo () {
+    if (!this.hasBufferedBytes(2)) return;
+
+    const buf = this.readBuffer(2);
+
+    if ((buf[0] & 0x30) !== 0x00) {
+      this.error(new Error('RSV2 and RSV3 must be clear'), 1002);
+      return;
+    }
+
+    const compressed = (buf[0] & 0x40) === 0x40;
+
+    if (compressed && !this._extensions[PerMessageDeflate.extensionName]) {
+      this.error(new Error('RSV1 must be clear'), 1002);
+      return;
+    }
+
+    this._fin = (buf[0] & 0x80) === 0x80;
+    this._opcode = buf[0] & 0x0f;
+    this._payloadLength = buf[1] & 0x7f;
+
+    if (this._opcode === 0x00) {
+      if (compressed) {
+        this.error(new Error('RSV1 must be clear'), 1002);
+        return;
+      }
+
+      if (!this._fragmented) {
+        this.error(new Error(`invalid opcode: ${this._opcode}`), 1002);
+        return;
+      } else {
+        this._opcode = this._fragmented;
+      }
+    } else if (this._opcode === 0x01 || this._opcode === 0x02) {
+      if (this._fragmented) {
+        this.error(new Error(`invalid opcode: ${this._opcode}`), 1002);
+        return;
+      }
+
+      this._compressed = compressed;
+    } else if (this._opcode > 0x07 && this._opcode < 0x0b) {
+      if (!this._fin) {
+        this.error(new Error('FIN must be set'), 1002);
+        return;
+      }
+
+      if (compressed) {
+        this.error(new Error('RSV1 must be clear'), 1002);
+        return;
+      }
+
+      if (this._payloadLength > 0x7d) {
+        this.error(new Error('invalid payload length'), 1002);
+        return;
+      }
+    } else {
+      this.error(new Error(`invalid opcode: ${this._opcode}`), 1002);
+      return;
+    }
+
+    if (!this._fin && !this._fragmented) this._fragmented = this._opcode;
+
+    this._masked = (buf[1] & 0x80) === 0x80;
+
+    if (this._payloadLength === 126) this._state = GET_PAYLOAD_LENGTH_16;
+    else if (this._payloadLength === 127) this._state = GET_PAYLOAD_LENGTH_64;
+    else this.haveLength();
+  }
+
+  /**
+   * Gets extended payload length (7+16).
+   *
+   * @private
+   */
+  getPayloadLength16 () {
+    if (!this.hasBufferedBytes(2)) return;
+
+    this._payloadLength = this.readBuffer(2).readUInt16BE(0, true);
+    this.haveLength();
+  }
+
+  /**
+   * Gets extended payload length (7+64).
+   *
+   * @private
+   */
+  getPayloadLength64 () {
+    if (!this.hasBufferedBytes(8)) return;
+
+    const buf = this.readBuffer(8);
+    const num = buf.readUInt32BE(0, true);
+
+    //
+    // The maximum safe integer in JavaScript is 2^53 - 1. An error is returned
+    // if payload length is greater than this number.
+    //
+    if (num > Math.pow(2, 53 - 32) - 1) {
+      this.error(new Error('max payload size exceeded'), 1009);
+      return;
+    }
+
+    this._payloadLength = (num * Math.pow(2, 32)) + buf.readUInt32BE(4, true);
+    this.haveLength();
+  }
+
+  /**
+   * Payload length has been read.
+   *
+   * @private
+   */
+  haveLength () {
+    if (this._opcode < 0x08 && this.maxPayloadExceeded(this._payloadLength)) {
+      return;
+    }
+
+    if (this._masked) this._state = GET_MASK;
+    else this._state = GET_DATA;
+  }
+
+  /**
+   * Reads mask bytes.
+   *
+   * @private
+   */
+  getMask () {
+    if (!this.hasBufferedBytes(4)) return;
+
+    this._mask = this.readBuffer(4);
+    this._state = GET_DATA;
+  }
+
+  /**
+   * Reads data bytes.
+   *
+   * @private
+   */
+  getData () {
+    var data = constants.EMPTY_BUFFER;
+
+    if (this._payloadLength) {
+      if (!this.hasBufferedBytes(this._payloadLength)) return;
+
+      data = this.readBuffer(this._payloadLength);
+      if (this._masked) bufferUtil.unmask(data, this._mask);
+    }
+
+    if (this._opcode > 0x07) {
+      this.controlMessage(data);
+    } else if (this._compressed) {
+      this._state = INFLATING;
+      this.decompress(data);
+    } else if (this.pushFragment(data)) {
+      this.dataMessage();
+    }
+  }
+
+  /**
+   * Decompresses data.
+   *
+   * @param {Buffer} data Compressed data
+   * @private
+   */
+  decompress (data) {
+    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
+
+    perMessageDeflate.decompress(data, this._fin, (err, buf) => {
+      if (err) {
+        this.error(err, err.closeCode === 1009 ? 1009 : 1007);
+        return;
+      }
+
+      if (this.pushFragment(buf)) this.dataMessage();
+      this.startLoop();
+    });
+  }
+
+  /**
+   * Handles a data message.
+   *
+   * @private
+   */
+  dataMessage () {
+    if (this._fin) {
+      const messageLength = this._messageLength;
+      const fragments = this._fragments;
+
+      this._totalPayloadLength = 0;
+      this._messageLength = 0;
+      this._fragmented = 0;
+      this._fragments = [];
+
+      if (this._opcode === 2) {
+        var data;
+
+        if (this._binaryType === 'nodebuffer') {
+          data = toBuffer(fragments, messageLength);
+        } else if (this._binaryType === 'arraybuffer') {
+          data = toArrayBuffer(toBuffer(fragments, messageLength));
+        } else {
+          data = fragments;
+        }
+
+        this.onmessage(data);
+      } else {
+        const buf = toBuffer(fragments, messageLength);
+
+        if (!isValidUTF8(buf)) {
+          this.error(new Error('invalid utf8 sequence'), 1007);
+          return;
+        }
+
+        this.onmessage(buf.toString());
+      }
+    }
+
+    this._state = GET_INFO;
+  }
+
+  /**
+   * Handles a control message.
+   *
+   * @param {Buffer} data Data to handle
+   * @private
+   */
+  controlMessage (data) {
+    if (this._opcode === 0x08) {
+      if (data.length === 0) {
+        this.onclose(1000, '');
+        this._loop = false;
+        this.cleanup(this._cleanupCallback);
+      } else if (data.length === 1) {
+        this.error(new Error('invalid payload length'), 1002);
+      } else {
+        const code = data.readUInt16BE(0, true);
+
+        if (!ErrorCodes.isValidErrorCode(code)) {
+          this.error(new Error(`invalid status code: ${code}`), 1002);
+          return;
+        }
+
+        const buf = data.slice(2);
+
+        if (!isValidUTF8(buf)) {
+          this.error(new Error('invalid utf8 sequence'), 1007);
+          return;
+        }
+
+        this.onclose(code, buf.toString());
+        this._loop = false;
+        this.cleanup(this._cleanupCallback);
+      }
+
+      return;
+    }
+
+    if (this._opcode === 0x09) this.onping(data);
+    else this.onpong(data);
+
+    this._state = GET_INFO;
+  }
+
+  /**
+   * Handles an error.
+   *
+   * @param {Error} err The error
+   * @param {Number} code Close code
+   * @private
+   */
+  error (err, code) {
+    this.onerror(err, code);
+    this._hadError = true;
+    this._loop = false;
+    this.cleanup(this._cleanupCallback);
+  }
+
+  /**
+   * Checks payload size, disconnects socket when it exceeds `maxPayload`.
+   *
+   * @param {Number} length Payload length
+   * @private
+   */
+  maxPayloadExceeded (length) {
+    if (length === 0 || this._maxPayload < 1) return false;
+
+    const fullLength = this._totalPayloadLength + length;
+
+    if (fullLength <= this._maxPayload) {
+      this._totalPayloadLength = fullLength;
+      return false;
+    }
+
+    this.error(new Error('max payload size exceeded'), 1009);
+    return true;
+  }
+
+  /**
+   * Appends a fragment in the fragments array after checking that the sum of
+   * fragment lengths does not exceed `maxPayload`.
+   *
+   * @param {Buffer} fragment The fragment to add
+   * @return {Boolean} `true` if `maxPayload` is not exceeded, else `false`
+   * @private
+   */
+  pushFragment (fragment) {
+    if (fragment.length === 0) return true;
+
+    const totalLength = this._messageLength + fragment.length;
+
+    if (this._maxPayload < 1 || totalLength <= this._maxPayload) {
+      this._messageLength = totalLength;
+      this._fragments.push(fragment);
+      return true;
+    }
+
+    this.error(new Error('max payload size exceeded'), 1009);
+    return false;
+  }
+
+  /**
+   * Releases resources used by the receiver.
+   *
+   * @param {Function} cb Callback
+   * @public
+   */
+  cleanup (cb) {
+    this._dead = true;
+
+    if (!this._hadError && (this._loop || this._state === INFLATING)) {
+      this._cleanupCallback = cb;
+    } else {
+      this._extensions = null;
+      this._fragments = null;
+      this._buffers = null;
+      this._mask = null;
+
+      this._cleanupCallback = null;
+      this.onmessage = null;
+      this.onclose = null;
+      this.onerror = null;
+      this.onping = null;
+      this.onpong = null;
+
+      if (cb) cb();
+    }
+  }
+}
+
+module.exports = Receiver;
+
+/**
+ * Makes a buffer from a list of fragments.
+ *
+ * @param {Buffer[]} fragments The list of fragments composing the message
+ * @param {Number} messageLength The length of the message
+ * @return {Buffer}
+ * @private
+ */
+function toBuffer (fragments, messageLength) {
+  if (fragments.length === 1) return fragments[0];
+  if (fragments.length > 1) return bufferUtil.concat(fragments, messageLength);
+  return constants.EMPTY_BUFFER;
+}
+
+/**
+ * Converts a buffer to an `ArrayBuffer`.
+ *
+ * @param {Buffer} The buffer to convert
+ * @return {ArrayBuffer} Converted buffer
+ */
+function toArrayBuffer (buf) {
+  if (buf.byteOffset === 0 && buf.byteLength === buf.buffer.byteLength) {
+    return buf.buffer;
+  }
+
+  return buf.buffer.slice(buf.byteOffset, buf.byteOffset + buf.byteLength);
+}
@@ -0,0 +1,412 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const safeBuffer = require('safe-buffer');
+const crypto = require('crypto');
+
+const PerMessageDeflate = require('./PerMessageDeflate');
+const bufferUtil = require('./BufferUtil');
+const ErrorCodes = require('./ErrorCodes');
+const constants = require('./Constants');
+
+const Buffer = safeBuffer.Buffer;
+
+/**
+ * HyBi Sender implementation.
+ */
+class Sender {
+  /**
+   * Creates a Sender instance.
+   *
+   * @param {net.Socket} socket The connection socket
+   * @param {Object} extensions An object containing the negotiated extensions
+   */
+  constructor (socket, extensions) {
+    this._extensions = extensions || {};
+    this._socket = socket;
+
+    this._firstFragment = true;
+    this._compress = false;
+
+    this._bufferedBytes = 0;
+    this._deflating = false;
+    this._queue = [];
+  }
+
+  /**
+   * Frames a piece of data according to the HyBi WebSocket protocol.
+   *
+   * @param {Buffer} data The data to frame
+   * @param {Object} options Options object
+   * @param {Number} options.opcode The opcode
+   * @param {Boolean} options.readOnly Specifies whether `data` can be modified
+   * @param {Boolean} options.fin Specifies whether or not to set the FIN bit
+   * @param {Boolean} options.mask Specifies whether or not to mask `data`
+   * @param {Boolean} options.rsv1 Specifies whether or not to set the RSV1 bit
+   * @return {Buffer[]} The framed data as a list of `Buffer` instances
+   * @public
+   */
+  static frame (data, options) {
+    const merge = data.length < 1024 || (options.mask && options.readOnly);
+    var offset = options.mask ? 6 : 2;
+    var payloadLength = data.length;
+
+    if (data.length >= 65536) {
+      offset += 8;
+      payloadLength = 127;
+    } else if (data.length > 125) {
+      offset += 2;
+      payloadLength = 126;
+    }
+
+    const target = Buffer.allocUnsafe(merge ? data.length + offset : offset);
+
+    target[0] = options.fin ? options.opcode | 0x80 : options.opcode;
+    if (options.rsv1) target[0] |= 0x40;
+
+    if (payloadLength === 126) {
+      target.writeUInt16BE(data.length, 2, true);
+    } else if (payloadLength === 127) {
+      target.writeUInt32BE(0, 2, true);
+      target.writeUInt32BE(data.length, 6, true);
+    }
+
+    if (!options.mask) {
+      target[1] = payloadLength;
+      if (merge) {
+        data.copy(target, offset);
+        return [target];
+      }
+
+      return [target, data];
+    }
+
+    const mask = crypto.randomBytes(4);
+
+    target[1] = payloadLength | 0x80;
+    target[offset - 4] = mask[0];
+    target[offset - 3] = mask[1];
+    target[offset - 2] = mask[2];
+    target[offset - 1] = mask[3];
+
+    if (merge) {
+      bufferUtil.mask(data, mask, target, offset, data.length);
+      return [target];
+    }
+
+    bufferUtil.mask(data, mask, data, 0, data.length);
+    return [target, data];
+  }
+
+  /**
+   * Sends a close message to the other peer.
+   *
+   * @param {(Number|undefined)} code The status code component of the body
+   * @param {String} data The message component of the body
+   * @param {Boolean} mask Specifies whether or not to mask the message
+   * @param {Function} cb Callback
+   * @public
+   */
+  close (code, data, mask, cb) {
+    var buf;
+
+    if (code === undefined) {
+      code = 1000;
+    } else if (typeof code !== 'number' || !ErrorCodes.isValidErrorCode(code)) {
+      throw new Error('first argument must be a valid error code number');
+    }
+
+    if (data === undefined || data === '') {
+      if (code === 1000) {
+        buf = constants.EMPTY_BUFFER;
+      } else {
+        buf = Buffer.allocUnsafe(2);
+        buf.writeUInt16BE(code, 0, true);
+      }
+    } else {
+      buf = Buffer.allocUnsafe(2 + Buffer.byteLength(data));
+      buf.writeUInt16BE(code, 0, true);
+      buf.write(data, 2);
+    }
+
+    if (this._deflating) {
+      this.enqueue([this.doClose, buf, mask, cb]);
+    } else {
+      this.doClose(buf, mask, cb);
+    }
+  }
+
+  /**
+   * Frames and sends a close message.
+   *
+   * @param {Buffer} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @param {Function} cb Callback
+   * @private
+   */
+  doClose (data, mask, cb) {
+    this.sendFrame(Sender.frame(data, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x08,
+      mask,
+      readOnly: false
+    }), cb);
+  }
+
+  /**
+   * Sends a ping message to the other peer.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @public
+   */
+  ping (data, mask) {
+    var readOnly = true;
+
+    if (!Buffer.isBuffer(data)) {
+      if (data instanceof ArrayBuffer) {
+        data = Buffer.from(data);
+      } else if (ArrayBuffer.isView(data)) {
+        data = viewToBuffer(data);
+      } else {
+        data = Buffer.from(data);
+        readOnly = false;
+      }
+    }
+
+    if (this._deflating) {
+      this.enqueue([this.doPing, data, mask, readOnly]);
+    } else {
+      this.doPing(data, mask, readOnly);
+    }
+  }
+
+  /**
+   * Frames and sends a ping message.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @param {Boolean} readOnly Specifies whether `data` can be modified
+   * @private
+   */
+  doPing (data, mask, readOnly) {
+    this.sendFrame(Sender.frame(data, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x09,
+      mask,
+      readOnly
+    }));
+  }
+
+  /**
+   * Sends a pong message to the other peer.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @public
+   */
+  pong (data, mask) {
+    var readOnly = true;
+
+    if (!Buffer.isBuffer(data)) {
+      if (data instanceof ArrayBuffer) {
+        data = Buffer.from(data);
+      } else if (ArrayBuffer.isView(data)) {
+        data = viewToBuffer(data);
+      } else {
+        data = Buffer.from(data);
+        readOnly = false;
+      }
+    }
+
+    if (this._deflating) {
+      this.enqueue([this.doPong, data, mask, readOnly]);
+    } else {
+      this.doPong(data, mask, readOnly);
+    }
+  }
+
+  /**
+   * Frames and sends a pong message.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Specifies whether or not to mask `data`
+   * @param {Boolean} readOnly Specifies whether `data` can be modified
+   * @private
+   */
+  doPong (data, mask, readOnly) {
+    this.sendFrame(Sender.frame(data, {
+      fin: true,
+      rsv1: false,
+      opcode: 0x0a,
+      mask,
+      readOnly
+    }));
+  }
+
+  /**
+   * Sends a data message to the other peer.
+   *
+   * @param {*} data The message to send
+   * @param {Object} options Options object
+   * @param {Boolean} options.compress Specifies whether or not to compress `data`
+   * @param {Boolean} options.binary Specifies whether `data` is binary or text
+   * @param {Boolean} options.fin Specifies whether the fragment is the last one
+   * @param {Boolean} options.mask Specifies whether or not to mask `data`
+   * @param {Function} cb Callback
+   * @public
+   */
+  send (data, options, cb) {
+    var opcode = options.binary ? 2 : 1;
+    var rsv1 = options.compress;
+    var readOnly = true;
+
+    if (!Buffer.isBuffer(data)) {
+      if (data instanceof ArrayBuffer) {
+        data = Buffer.from(data);
+      } else if (ArrayBuffer.isView(data)) {
+        data = viewToBuffer(data);
+      } else {
+        data = Buffer.from(data);
+        readOnly = false;
+      }
+    }
+
+    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
+
+    if (this._firstFragment) {
+      this._firstFragment = false;
+      if (rsv1 && perMessageDeflate) {
+        rsv1 = data.length >= perMessageDeflate._threshold;
+      }
+      this._compress = rsv1;
+    } else {
+      rsv1 = false;
+      opcode = 0;
+    }
+
+    if (options.fin) this._firstFragment = true;
+
+    if (perMessageDeflate) {
+      const opts = {
+        fin: options.fin,
+        rsv1,
+        opcode,
+        mask: options.mask,
+        readOnly
+      };
+
+      if (this._deflating) {
+        this.enqueue([this.dispatch, data, this._compress, opts, cb]);
+      } else {
+        this.dispatch(data, this._compress, opts, cb);
+      }
+    } else {
+      this.sendFrame(Sender.frame(data, {
+        fin: options.fin,
+        rsv1: false,
+        opcode,
+        mask: options.mask,
+        readOnly
+      }), cb);
+    }
+  }
+
+  /**
+   * Dispatches a data message.
+   *
+   * @param {Buffer} data The message to send
+   * @param {Boolean} compress Specifies whether or not to compress `data`
+   * @param {Object} options Options object
+   * @param {Number} options.opcode The opcode
+   * @param {Boolean} options.readOnly Specifies whether `data` can be modified
+   * @param {Boolean} options.fin Specifies whether or not to set the FIN bit
+   * @param {Boolean} options.mask Specifies whether or not to mask `data`
+   * @param {Boolean} options.rsv1 Specifies whether or not to set the RSV1 bit
+   * @param {Function} cb Callback
+   * @private
+   */
+  dispatch (data, compress, options, cb) {
+    if (!compress) {
+      this.sendFrame(Sender.frame(data, options), cb);
+      return;
+    }
+
+    const perMessageDeflate = this._extensions[PerMessageDeflate.extensionName];
+
+    this._deflating = true;
+    perMessageDeflate.compress(data, options.fin, (_, buf) => {
+      options.readOnly = false;
+      this.sendFrame(Sender.frame(buf, options), cb);
+      this._deflating = false;
+      this.dequeue();
+    });
+  }
+
+  /**
+   * Executes queued send operations.
+   *
+   * @private
+   */
+  dequeue () {
+    while (!this._deflating && this._queue.length) {
+      const params = this._queue.shift();
+
+      this._bufferedBytes -= params[1].length;
+      params[0].apply(this, params.slice(1));
+    }
+  }
+
+  /**
+   * Enqueues a send operation.
+   *
+   * @param {Array} params Send operation parameters.
+   * @private
+   */
+  enqueue (params) {
+    this._bufferedBytes += params[1].length;
+    this._queue.push(params);
+  }
+
+  /**
+   * Sends a frame.
+   *
+   * @param {Buffer[]} list The frame to send
+   * @param {Function} cb Callback
+   * @private
+   */
+  sendFrame (list, cb) {
+    if (list.length === 2) {
+      this._socket.write(list[0]);
+      this._socket.write(list[1], cb);
+    } else {
+      this._socket.write(list[0], cb);
+    }
+  }
+}
+
+module.exports = Sender;
+
+/**
+ * Converts an `ArrayBuffer` view into a buffer.
+ *
+ * @param {(DataView|TypedArray)} view The view to convert
+ * @return {Buffer} Converted view
+ * @private
+ */
+function viewToBuffer (view) {
+  const buf = Buffer.from(view.buffer);
+
+  if (view.byteLength !== view.buffer.byteLength) {
+    return buf.slice(view.byteOffset, view.byteOffset + view.byteLength);
+  }
+
+  return buf;
+}
@@ -0,0 +1,17 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+try {
+  const isValidUTF8 = require('utf-8-validate');
+
+  module.exports = typeof isValidUTF8 === 'object'
+    ? isValidUTF8.Validation.isValidUTF8 // utf-8-validate@<3.0.0
+    : isValidUTF8;
+} catch (e) /* istanbul ignore next */ {
+  module.exports = () => true;
+}
@@ -0,0 +1,717 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const EventEmitter = require('events');
+const crypto = require('crypto');
+const Ultron = require('ultron');
+const https = require('https');
+const http = require('http');
+const url = require('url');
+
+const PerMessageDeflate = require('./PerMessageDeflate');
+const EventTarget = require('./EventTarget');
+const Extensions = require('./Extensions');
+const constants = require('./Constants');
+const Receiver = require('./Receiver');
+const Sender = require('./Sender');
+
+const protocolVersions = [8, 13];
+const closeTimeout = 30 * 1000; // Allow 30 seconds to terminate the connection cleanly.
+
+/**
+ * Class representing a WebSocket.
+ *
+ * @extends EventEmitter
+ */
+class WebSocket extends EventEmitter {
+  /**
+   * Create a new `WebSocket`.
+   *
+   * @param {String} address The URL to which to connect
+   * @param {(String|String[])} protocols The subprotocols
+   * @param {Object} options Connection options
+   */
+  constructor (address, protocols, options) {
+    super();
+
+    if (!protocols) {
+      protocols = [];
+    } else if (typeof protocols === 'string') {
+      protocols = [protocols];
+    } else if (!Array.isArray(protocols)) {
+      options = protocols;
+      protocols = [];
+    }
+
+    this.readyState = WebSocket.CONNECTING;
+    this.bytesReceived = 0;
+    this.extensions = {};
+    this.protocol = '';
+
+    this._binaryType = constants.BINARY_TYPES[0];
+    this._finalize = this.finalize.bind(this);
+    this._closeFrameReceived = false;
+    this._closeFrameSent = false;
+    this._closeMessage = '';
+    this._closeTimer = null;
+    this._finalized = false;
+    this._closeCode = 1006;
+    this._receiver = null;
+    this._sender = null;
+    this._socket = null;
+    this._ultron = null;
+
+    if (Array.isArray(address)) {
+      initAsServerClient.call(this, address[0], address[1], options);
+    } else {
+      initAsClient.call(this, address, protocols, options);
+    }
+  }
+
+  get CONNECTING () { return WebSocket.CONNECTING; }
+  get CLOSING () { return WebSocket.CLOSING; }
+  get CLOSED () { return WebSocket.CLOSED; }
+  get OPEN () { return WebSocket.OPEN; }
+
+  /**
+   * @type {Number}
+   */
+  get bufferedAmount () {
+    var amount = 0;
+
+    if (this._socket) {
+      amount = this._socket.bufferSize + this._sender._bufferedBytes;
+    }
+    return amount;
+  }
+
+  /**
+   * This deviates from the WHATWG interface since ws doesn't support the required
+   * default "blob" type (instead we define a custom "nodebuffer" type).
+   *
+   * @type {String}
+   */
+  get binaryType () {
+    return this._binaryType;
+  }
+
+  set binaryType (type) {
+    if (constants.BINARY_TYPES.indexOf(type) < 0) return;
+
+    this._binaryType = type;
+
+    //
+    // Allow to change `binaryType` on the fly.
+    //
+    if (this._receiver) this._receiver._binaryType = type;
+  }
+
+  /**
+   * Set up the socket and the internal resources.
+   *
+   * @param {net.Socket} socket The network socket between the server and client
+   * @param {Buffer} head The first packet of the upgraded stream
+   * @private
+   */
+  setSocket (socket, head) {
+    socket.setTimeout(0);
+    socket.setNoDelay();
+
+    this._receiver = new Receiver(this.extensions, this._maxPayload, this.binaryType);
+    this._sender = new Sender(socket, this.extensions);
+    this._ultron = new Ultron(socket);
+    this._socket = socket;
+
+    this._ultron.on('close', this._finalize);
+    this._ultron.on('error', this._finalize);
+    this._ultron.on('end', this._finalize);
+
+    if (head.length > 0) socket.unshift(head);
+
+    this._ultron.on('data', (data) => {
+      this.bytesReceived += data.length;
+      this._receiver.add(data);
+    });
+
+    this._receiver.onmessage = (data) => this.emit('message', data);
+    this._receiver.onping = (data) => {
+      this.pong(data, !this._isServer, true);
+      this.emit('ping', data);
+    };
+    this._receiver.onpong = (data) => this.emit('pong', data);
+    this._receiver.onclose = (code, reason) => {
+      this._closeFrameReceived = true;
+      this._closeMessage = reason;
+      this._closeCode = code;
+      if (!this._finalized) this.close(code, reason);
+    };
+    this._receiver.onerror = (error, code) => {
+      this._closeMessage = '';
+      this._closeCode = code;
+
+      //
+      // Ensure that the error is emitted even if `WebSocket#finalize()` has
+      // already been called.
+      //
+      this.readyState = WebSocket.CLOSING;
+      this.emit('error', error);
+      this.finalize(true);
+    };
+
+    this.readyState = WebSocket.OPEN;
+    this.emit('open');
+  }
+
+  /**
+   * Clean up and release internal resources.
+   *
+   * @param {(Boolean|Error)} error Indicates whether or not an error occurred
+   * @private
+   */
+  finalize (error) {
+    if (this._finalized) return;
+
+    this.readyState = WebSocket.CLOSING;
+    this._finalized = true;
+
+    if (typeof error === 'object') this.emit('error', error);
+    if (!this._socket) return this.emitClose();
+
+    clearTimeout(this._closeTimer);
+    this._closeTimer = null;
+
+    this._ultron.destroy();
+    this._ultron = null;
+
+    this._socket.on('error', constants.NOOP);
+
+    if (!error) this._socket.end();
+    else this._socket.destroy();
+
+    this._socket = null;
+    this._sender = null;
+
+    this._receiver.cleanup(() => this.emitClose());
+    this._receiver = null;
+  }
+
+  /**
+   * Emit the `close` event.
+   *
+   * @private
+   */
+  emitClose () {
+    this.readyState = WebSocket.CLOSED;
+
+    this.emit('close', this._closeCode, this._closeMessage);
+
+    if (this.extensions[PerMessageDeflate.extensionName]) {
+      this.extensions[PerMessageDeflate.extensionName].cleanup();
+    }
+
+    this.extensions = null;
+
+    this.removeAllListeners();
+  }
+
+  /**
+   * Pause the socket stream.
+   *
+   * @public
+   */
+  pause () {
+    if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
+
+    this._socket.pause();
+  }
+
+  /**
+   * Resume the socket stream
+   *
+   * @public
+   */
+  resume () {
+    if (this.readyState !== WebSocket.OPEN) throw new Error('not opened');
+
+    this._socket.resume();
+  }
+
+  /**
+   * Start a closing handshake.
+   *
+   *            +----------+     +-----------+   +----------+
+   *     + - - -|ws.close()|---->|close frame|-->|ws.close()|- - - -
+   *            +----------+     +-----------+   +----------+       |
+   *     |      +----------+     +-----------+         |
+   *            |ws.close()|<----|close frame|<--------+            |
+   *            +----------+     +-----------+         |
+   *  CLOSING         |              +---+             |         CLOSING
+   *                  |          +---|fin|<------------+
+   *     |            |          |   +---+                          |
+   *                  |          |   +---+      +-------------+
+   *     |            +----------+-->|fin|----->|ws.finalize()| - - +
+   *                             |   +---+      +-------------+
+   *     |     +-------------+   |
+   *      - - -|ws.finalize()|<--+
+   *           +-------------+
+   *
+   * @param {Number} code Status code explaining why the connection is closing
+   * @param {String} data A string explaining why the connection is closing
+   * @public
+   */
+  close (code, data) {
+    if (this.readyState === WebSocket.CLOSED) return;
+    if (this.readyState === WebSocket.CONNECTING) {
+      this._req.abort();
+      this.finalize(new Error('closed before the connection is established'));
+      return;
+    }
+
+    if (this.readyState === WebSocket.CLOSING) {
+      if (this._closeFrameSent && this._closeFrameReceived) this._socket.end();
+      return;
+    }
+
+    this.readyState = WebSocket.CLOSING;
+    this._sender.close(code, data, !this._isServer, (err) => {
+      //
+      // This error is handled by the `'error'` listener on the socket. We only
+      // want to know if the close frame has been sent here.
+      //
+      if (err) return;
+
+      this._closeFrameSent = true;
+
+      if (!this._finalized) {
+        if (this._closeFrameReceived) this._socket.end();
+
+        //
+        // Ensure that the connection is cleaned up even when the closing
+        // handshake fails.
+        //
+        this._closeTimer = setTimeout(this._finalize, closeTimeout, true);
+      }
+    });
+  }
+
+  /**
+   * Send a ping message.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Indicates whether or not to mask `data`
+   * @param {Boolean} failSilently Indicates whether or not to throw if `readyState` isn't `OPEN`
+   * @public
+   */
+  ping (data, mask, failSilently) {
+    if (this.readyState !== WebSocket.OPEN) {
+      if (failSilently) return;
+      throw new Error('not opened');
+    }
+
+    if (typeof data === 'number') data = data.toString();
+    if (mask === undefined) mask = !this._isServer;
+    this._sender.ping(data || constants.EMPTY_BUFFER, mask);
+  }
+
+  /**
+   * Send a pong message.
+   *
+   * @param {*} data The message to send
+   * @param {Boolean} mask Indicates whether or not to mask `data`
+   * @param {Boolean} failSilently Indicates whether or not to throw if `readyState` isn't `OPEN`
+   * @public
+   */
+  pong (data, mask, failSilently) {
+    if (this.readyState !== WebSocket.OPEN) {
+      if (failSilently) return;
+      throw new Error('not opened');
+    }
+
+    if (typeof data === 'number') data = data.toString();
+    if (mask === undefined) mask = !this._isServer;
+    this._sender.pong(data || constants.EMPTY_BUFFER, mask);
+  }
+
+  /**
+   * Send a data message.
+   *
+   * @param {*} data The message to send
+   * @param {Object} options Options object
+   * @param {Boolean} options.compress Specifies whether or not to compress `data`
+   * @param {Boolean} options.binary Specifies whether `data` is binary or text
+   * @param {Boolean} options.fin Specifies whether the fragment is the last one
+   * @param {Boolean} options.mask Specifies whether or not to mask `data`
+   * @param {Function} cb Callback which is executed when data is written out
+   * @public
+   */
+  send (data, options, cb) {
+    if (typeof options === 'function') {
+      cb = options;
+      options = {};
+    }
+
+    if (this.readyState !== WebSocket.OPEN) {
+      if (cb) cb(new Error('not opened'));
+      else throw new Error('not opened');
+      return;
+    }
+
+    if (typeof data === 'number') data = data.toString();
+
+    const opts = Object.assign({
+      binary: typeof data !== 'string',
+      mask: !this._isServer,
+      compress: true,
+      fin: true
+    }, options);
+
+    if (!this.extensions[PerMessageDeflate.extensionName]) {
+      opts.compress = false;
+    }
+
+    this._sender.send(data || constants.EMPTY_BUFFER, opts, cb);
+  }
+
+  /**
+   * Forcibly close the connection.
+   *
+   * @public
+   */
+  terminate () {
+    if (this.readyState === WebSocket.CLOSED) return;
+    if (this.readyState === WebSocket.CONNECTING) {
+      this._req.abort();
+      this.finalize(new Error('closed before the connection is established'));
+      return;
+    }
+
+    this.finalize(true);
+  }
+}
+
+WebSocket.CONNECTING = 0;
+WebSocket.OPEN = 1;
+WebSocket.CLOSING = 2;
+WebSocket.CLOSED = 3;
+
+//
+// Add the `onopen`, `onerror`, `onclose`, and `onmessage` attributes.
+// See https://html.spec.whatwg.org/multipage/comms.html#the-websocket-interface
+//
+['open', 'error', 'close', 'message'].forEach((method) => {
+  Object.defineProperty(WebSocket.prototype, `on${method}`, {
+    /**
+     * Return the listener of the event.
+     *
+     * @return {(Function|undefined)} The event listener or `undefined`
+     * @public
+     */
+    get () {
+      const listeners = this.listeners(method);
+      for (var i = 0; i < listeners.length; i++) {
+        if (listeners[i]._listener) return listeners[i]._listener;
+      }
+    },
+    /**
+     * Add a listener for the event.
+     *
+     * @param {Function} listener The listener to add
+     * @public
+     */
+    set (listener) {
+      const listeners = this.listeners(method);
+      for (var i = 0; i < listeners.length; i++) {
+        //
+        // Remove only the listeners added via `addEventListener`.
+        //
+        if (listeners[i]._listener) this.removeListener(method, listeners[i]);
+      }
+      this.addEventListener(method, listener);
+    }
+  });
+});
+
+WebSocket.prototype.addEventListener = EventTarget.addEventListener;
+WebSocket.prototype.removeEventListener = EventTarget.removeEventListener;
+
+module.exports = WebSocket;
+
+/**
+ * Initialize a WebSocket server client.
+ *
+ * @param {http.IncomingMessage} req The request object
+ * @param {net.Socket} socket The network socket between the server and client
+ * @param {Buffer} head The first packet of the upgraded stream
+ * @param {Object} options WebSocket attributes
+ * @param {Number} options.protocolVersion The WebSocket protocol version
+ * @param {Object} options.extensions The negotiated extensions
+ * @param {Number} options.maxPayload The maximum allowed message size
+ * @param {String} options.protocol The chosen subprotocol
+ * @private
+ */
+function initAsServerClient (socket, head, options) {
+  this.protocolVersion = options.protocolVersion;
+  this._maxPayload = options.maxPayload;
+  this.extensions = options.extensions;
+  this.protocol = options.protocol;
+
+  this._isServer = true;
+
+  this.setSocket(socket, head);
+}
+
+/**
+ * Initialize a WebSocket client.
+ *
+ * @param {String} address The URL to which to connect
+ * @param {String[]} protocols The list of subprotocols
+ * @param {Object} options Connection options
+ * @param {String} options.protocol Value of the `Sec-WebSocket-Protocol` header
+ * @param {(Boolean|Object)} options.perMessageDeflate Enable/disable permessage-deflate
+ * @param {Number} options.handshakeTimeout Timeout in milliseconds for the handshake request
+ * @param {String} options.localAddress Local interface to bind for network connections
+ * @param {Number} options.protocolVersion Value of the `Sec-WebSocket-Version` header
+ * @param {Object} options.headers An object containing request headers
+ * @param {String} options.origin Value of the `Origin` or `Sec-WebSocket-Origin` header
+ * @param {http.Agent} options.agent Use the specified Agent
+ * @param {String} options.host Value of the `Host` header
+ * @param {Number} options.family IP address family to use during hostname lookup (4 or 6).
+ * @param {Function} options.checkServerIdentity A function to validate the server hostname
+ * @param {Boolean} options.rejectUnauthorized Verify or not the server certificate
+ * @param {String} options.passphrase The passphrase for the private key or pfx
+ * @param {String} options.ciphers The ciphers to use or exclude
+ * @param {String} options.ecdhCurve The curves for ECDH key agreement to use or exclude
+ * @param {(String|String[]|Buffer|Buffer[])} options.cert The certificate key
+ * @param {(String|String[]|Buffer|Buffer[])} options.key The private key
+ * @param {(String|Buffer)} options.pfx The private key, certificate, and CA certs
+ * @param {(String|String[]|Buffer|Buffer[])} options.ca Trusted certificates
+ * @private
+ */
+function initAsClient (address, protocols, options) {
+  options = Object.assign({
+    protocolVersion: protocolVersions[1],
+    protocol: protocols.join(','),
+    perMessageDeflate: true,
+    handshakeTimeout: null,
+    localAddress: null,
+    headers: null,
+    family: null,
+    origin: null,
+    agent: null,
+    host: null,
+
+    //
+    // SSL options.
+    //
+    checkServerIdentity: null,
+    rejectUnauthorized: null,
+    passphrase: null,
+    ciphers: null,
+    ecdhCurve: null,
+    cert: null,
+    key: null,
+    pfx: null,
+    ca: null
+  }, options);
+
+  if (protocolVersions.indexOf(options.protocolVersion) === -1) {
+    throw new Error(
+      `unsupported protocol version: ${options.protocolVersion} ` +
+      `(supported versions: ${protocolVersions.join(', ')})`
+    );
+  }
+
+  this.protocolVersion = options.protocolVersion;
+  this._isServer = false;
+  this.url = address;
+
+  const serverUrl = url.parse(address);
+  const isUnixSocket = serverUrl.protocol === 'ws+unix:';
+
+  if (!serverUrl.host && (!isUnixSocket || !serverUrl.path)) {
+    throw new Error('invalid url');
+  }
+
+  const isSecure = serverUrl.protocol === 'wss:' || serverUrl.protocol === 'https:';
+  const key = crypto.randomBytes(16).toString('base64');
+  const httpObj = isSecure ? https : http;
+  var perMessageDeflate;
+
+  const requestOptions = {
+    port: serverUrl.port || (isSecure ? 443 : 80),
+    host: serverUrl.hostname,
+    path: '/',
+    headers: {
+      'Sec-WebSocket-Version': options.protocolVersion,
+      'Sec-WebSocket-Key': key,
+      'Connection': 'Upgrade',
+      'Upgrade': 'websocket'
+    }
+  };
+
+  if (options.headers) Object.assign(requestOptions.headers, options.headers);
+  if (options.perMessageDeflate) {
+    perMessageDeflate = new PerMessageDeflate(
+      options.perMessageDeflate !== true ? options.perMessageDeflate : {},
+      false
+    );
+    requestOptions.headers['Sec-WebSocket-Extensions'] = Extensions.format({
+      [PerMessageDeflate.extensionName]: perMessageDeflate.offer()
+    });
+  }
+  if (options.protocol) {
+    requestOptions.headers['Sec-WebSocket-Protocol'] = options.protocol;
+  }
+  if (options.origin) {
+    if (options.protocolVersion < 13) {
+      requestOptions.headers['Sec-WebSocket-Origin'] = options.origin;
+    } else {
+      requestOptions.headers.Origin = options.origin;
+    }
+  }
+  if (options.host) requestOptions.headers.Host = options.host;
+  if (serverUrl.auth) requestOptions.auth = serverUrl.auth;
+
+  if (options.localAddress) requestOptions.localAddress = options.localAddress;
+  if (options.family) requestOptions.family = options.family;
+
+  if (isUnixSocket) {
+    const parts = serverUrl.path.split(':');
+
+    requestOptions.socketPath = parts[0];
+    requestOptions.path = parts[1];
+  } else if (serverUrl.path) {
+    //
+    // Make sure that path starts with `/`.
+    //
+    if (serverUrl.path.charAt(0) !== '/') {
+      requestOptions.path = `/${serverUrl.path}`;
+    } else {
+      requestOptions.path = serverUrl.path;
+    }
+  }
+
+  var agent = options.agent;
+
+  //
+  // A custom agent is required for these options.
+  //
+  if (
+    options.rejectUnauthorized != null ||
+    options.checkServerIdentity ||
+    options.passphrase ||
+    options.ciphers ||
+    options.ecdhCurve ||
+    options.cert ||
+    options.key ||
+    options.pfx ||
+    options.ca
+  ) {
+    if (options.passphrase) requestOptions.passphrase = options.passphrase;
+    if (options.ciphers) requestOptions.ciphers = options.ciphers;
+    if (options.ecdhCurve) requestOptions.ecdhCurve = options.ecdhCurve;
+    if (options.cert) requestOptions.cert = options.cert;
+    if (options.key) requestOptions.key = options.key;
+    if (options.pfx) requestOptions.pfx = options.pfx;
+    if (options.ca) requestOptions.ca = options.ca;
+    if (options.checkServerIdentity) {
+      requestOptions.checkServerIdentity = options.checkServerIdentity;
+    }
+    if (options.rejectUnauthorized != null) {
+      requestOptions.rejectUnauthorized = options.rejectUnauthorized;
+    }
+
+    if (!agent) agent = new httpObj.Agent(requestOptions);
+  }
+
+  if (agent) requestOptions.agent = agent;
+
+  this._req = httpObj.get(requestOptions);
+
+  if (options.handshakeTimeout) {
+    this._req.setTimeout(options.handshakeTimeout, () => {
+      this._req.abort();
+      this.finalize(new Error('opening handshake has timed out'));
+    });
+  }
+
+  this._req.on('error', (error) => {
+    if (this._req.aborted) return;
+
+    this._req = null;
+    this.finalize(error);
+  });
+
+  this._req.on('response', (res) => {
+    if (!this.emit('unexpected-response', this._req, res)) {
+      this._req.abort();
+      this.finalize(new Error(`unexpected server response (${res.statusCode})`));
+    }
+  });
+
+  this._req.on('upgrade', (res, socket, head) => {
+    this.emit('headers', res.headers, res);
+
+    //
+    // The user may have closed the connection from a listener of the `headers`
+    // event.
+    //
+    if (this.readyState !== WebSocket.CONNECTING) return;
+
+    this._req = null;
+
+    const digest = crypto.createHash('sha1')
+      .update(key + constants.GUID, 'binary')
+      .digest('base64');
+
+    if (res.headers['sec-websocket-accept'] !== digest) {
+      socket.destroy();
+      return this.finalize(new Error('invalid server key'));
+    }
+
+    const serverProt = res.headers['sec-websocket-protocol'];
+    const protList = (options.protocol || '').split(/, */);
+    var protError;
+
+    if (!options.protocol && serverProt) {
+      protError = 'server sent a subprotocol even though none requested';
+    } else if (options.protocol && !serverProt) {
+      protError = 'server sent no subprotocol even though requested';
+    } else if (serverProt && protList.indexOf(serverProt) === -1) {
+      protError = 'server responded with an invalid protocol';
+    }
+
+    if (protError) {
+      socket.destroy();
+      return this.finalize(new Error(protError));
+    }
+
+    if (serverProt) this.protocol = serverProt;
+
+    if (perMessageDeflate) {
+      try {
+        const serverExtensions = Extensions.parse(
+          res.headers['sec-websocket-extensions']
+        );
+
+        if (serverExtensions[PerMessageDeflate.extensionName]) {
+          perMessageDeflate.accept(
+            serverExtensions[PerMessageDeflate.extensionName]
+          );
+          this.extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
+        }
+      } catch (err) {
+        socket.destroy();
+        this.finalize(new Error('invalid Sec-WebSocket-Extensions header'));
+        return;
+      }
+    }
+
+    this.setSocket(socket, head);
+  });
+}
@@ -0,0 +1,326 @@
+/*!
+ * ws: a node.js websocket client
+ * Copyright(c) 2011 Einar Otto Stangvik <einaros@gmail.com>
+ * MIT Licensed
+ */
+
+'use strict';
+
+const safeBuffer = require('safe-buffer');
+const EventEmitter = require('events');
+const crypto = require('crypto');
+const Ultron = require('ultron');
+const http = require('http');
+const url = require('url');
+
+const PerMessageDeflate = require('./PerMessageDeflate');
+const Extensions = require('./Extensions');
+const constants = require('./Constants');
+const WebSocket = require('./WebSocket');
+
+const Buffer = safeBuffer.Buffer;
+
+/**
+ * Class representing a WebSocket server.
+ *
+ * @extends EventEmitter
+ */
+class WebSocketServer extends EventEmitter {
+  /**
+   * Create a `WebSocketServer` instance.
+   *
+   * @param {Object} options Configuration options
+   * @param {String} options.host The hostname where to bind the server
+   * @param {Number} options.port The port where to bind the server
+   * @param {http.Server} options.server A pre-created HTTP/S server to use
+   * @param {Function} options.verifyClient An hook to reject connections
+   * @param {Function} options.handleProtocols An hook to handle protocols
+   * @param {String} options.path Accept only connections matching this path
+   * @param {Boolean} options.noServer Enable no server mode
+   * @param {Boolean} options.clientTracking Specifies whether or not to track clients
+   * @param {(Boolean|Object)} options.perMessageDeflate Enable/disable permessage-deflate
+   * @param {Number} options.maxPayload The maximum allowed message size
+   * @param {Function} callback A listener for the `listening` event
+   */
+  constructor (options, callback) {
+    super();
+
+    options = Object.assign({
+      maxPayload: 100 * 1024 * 1024,
+      perMessageDeflate: false,
+      handleProtocols: null,
+      clientTracking: true,
+      verifyClient: null,
+      noServer: false,
+      backlog: null, // use default (511 as implemented in net.js)
+      server: null,
+      host: null,
+      path: null,
+      port: null
+    }, options);
+
+    if (options.port == null && !options.server && !options.noServer) {
+      throw new TypeError('missing or invalid options');
+    }
+
+    if (options.port != null) {
+      this._server = http.createServer((req, res) => {
+        const body = http.STATUS_CODES[426];
+
+        res.writeHead(426, {
+          'Content-Length': body.length,
+          'Content-Type': 'text/plain'
+        });
+        res.end(body);
+      });
+      this._server.listen(options.port, options.host, options.backlog, callback);
+    } else if (options.server) {
+      this._server = options.server;
+    }
+
+    if (this._server) {
+      this._ultron = new Ultron(this._server);
+      this._ultron.on('listening', () => this.emit('listening'));
+      this._ultron.on('error', (err) => this.emit('error', err));
+      this._ultron.on('upgrade', (req, socket, head) => {
+        this.handleUpgrade(req, socket, head, (client) => {
+          this.emit('connection', client, req);
+        });
+      });
+    }
+
+    if (options.perMessageDeflate === true) options.perMessageDeflate = {};
+    if (options.clientTracking) this.clients = new Set();
+    this.options = options;
+  }
+
+  /**
+   * Close the server.
+   *
+   * @param {Function} cb Callback
+   * @public
+   */
+  close (cb) {
+    //
+    // Terminate all associated clients.
+    //
+    if (this.clients) {
+      for (const client of this.clients) client.terminate();
+    }
+
+    const server = this._server;
+
+    if (server) {
+      this._ultron.destroy();
+      this._ultron = this._server = null;
+
+      //
+      // Close the http server if it was internally created.
+      //
+      if (this.options.port != null) return server.close(cb);
+    }
+
+    if (cb) cb();
+  }
+
+  /**
+   * See if a given request should be handled by this server instance.
+   *
+   * @param {http.IncomingMessage} req Request object to inspect
+   * @return {Boolean} `true` if the request is valid, else `false`
+   * @public
+   */
+  shouldHandle (req) {
+    if (this.options.path && url.parse(req.url).pathname !== this.options.path) {
+      return false;
+    }
+
+    return true;
+  }
+
+  /**
+   * Handle a HTTP Upgrade request.
+   *
+   * @param {http.IncomingMessage} req The request object
+   * @param {net.Socket} socket The network socket between the server and client
+   * @param {Buffer} head The first packet of the upgraded stream
+   * @param {Function} cb Callback
+   * @public
+   */
+  handleUpgrade (req, socket, head, cb) {
+    socket.on('error', socketError);
+
+    const version = +req.headers['sec-websocket-version'];
+    const extensions = {};
+
+    if (
+      req.method !== 'GET' || req.headers.upgrade.toLowerCase() !== 'websocket' ||
+      !req.headers['sec-websocket-key'] || (version !== 8 && version !== 13) ||
+      !this.shouldHandle(req)
+    ) {
+      return abortConnection(socket, 400);
+    }
+
+    if (this.options.perMessageDeflate) {
+      const perMessageDeflate = new PerMessageDeflate(
+        this.options.perMessageDeflate,
+        true,
+        this.options.maxPayload
+      );
+
+      try {
+        const offers = Extensions.parse(
+          req.headers['sec-websocket-extensions']
+        );
+
+        if (offers[PerMessageDeflate.extensionName]) {
+          perMessageDeflate.accept(offers[PerMessageDeflate.extensionName]);
+          extensions[PerMessageDeflate.extensionName] = perMessageDeflate;
+        }
+      } catch (err) {
+        return abortConnection(socket, 400);
+      }
+    }
+
+    var protocol = (req.headers['sec-websocket-protocol'] || '').split(/, */);
+
+    //
+    // Optionally call external protocol selection handler.
+    //
+    if (this.options.handleProtocols) {
+      protocol = this.options.handleProtocols(protocol, req);
+      if (protocol === false) return abortConnection(socket, 401);
+    } else {
+      protocol = protocol[0];
+    }
+
+    //
+    // Optionally call external client verification handler.
+    //
+    if (this.options.verifyClient) {
+      const info = {
+        origin: req.headers[`${version === 8 ? 'sec-websocket-origin' : 'origin'}`],
+        secure: !!(req.connection.authorized || req.connection.encrypted),
+        req
+      };
+
+      if (this.options.verifyClient.length === 2) {
+        this.options.verifyClient(info, (verified, code, message) => {
+          if (!verified) return abortConnection(socket, code || 401, message);
+
+          this.completeUpgrade(
+            protocol,
+            extensions,
+            version,
+            req,
+            socket,
+            head,
+            cb
+          );
+        });
+        return;
+      }
+
+      if (!this.options.verifyClient(info)) return abortConnection(socket, 401);
+    }
+
+    this.completeUpgrade(protocol, extensions, version, req, socket, head, cb);
+  }
+
+  /**
+   * Upgrade the connection to WebSocket.
+   *
+   * @param {String} protocol The chosen subprotocol
+   * @param {Object} extensions The accepted extensions
+   * @param {Number} version The WebSocket protocol version
+   * @param {http.IncomingMessage} req The request object
+   * @param {net.Socket} socket The network socket between the server and client
+   * @param {Buffer} head The first packet of the upgraded stream
+   * @param {Function} cb Callback
+   * @private
+   */
+  completeUpgrade (protocol, extensions, version, req, socket, head, cb) {
+    //
+    // Destroy the socket if the client has already sent a FIN packet.
+    //
+    if (!socket.readable || !socket.writable) return socket.destroy();
+
+    const key = crypto.createHash('sha1')
+      .update(req.headers['sec-websocket-key'] + constants.GUID, 'binary')
+      .digest('base64');
+
+    const headers = [
+      'HTTP/1.1 101 Switching Protocols',
+      'Upgrade: websocket',
+      'Connection: Upgrade',
+      `Sec-WebSocket-Accept: ${key}`
+    ];
+
+    if (protocol) headers.push(`Sec-WebSocket-Protocol: ${protocol}`);
+    if (extensions[PerMessageDeflate.extensionName]) {
+      const params = extensions[PerMessageDeflate.extensionName].params;
+      const value = Extensions.format({
+        [PerMessageDeflate.extensionName]: [params]
+      });
+      headers.push(`Sec-WebSocket-Extensions: ${value}`);
+    }
+
+    //
+    // Allow external modification/inspection of handshake headers.
+    //
+    this.emit('headers', headers, req);
+
+    socket.write(headers.concat('\r\n').join('\r\n'));
+
+    const client = new WebSocket([socket, head], null, {
+      maxPayload: this.options.maxPayload,
+      protocolVersion: version,
+      extensions,
+      protocol
+    });
+
+    if (this.clients) {
+      this.clients.add(client);
+      client.on('close', () => this.clients.delete(client));
+    }
+
+    socket.removeListener('error', socketError);
+    cb(client);
+  }
+}
+
+module.exports = WebSocketServer;
+
+/**
+ * Handle premature socket errors.
+ *
+ * @private
+ */
+function socketError () {
+  this.destroy();
+}
+
+/**
+ * Close the connection when preconditions are not fulfilled.
+ *
+ * @param {net.Socket} socket The socket of the upgrade request
+ * @param {Number} code The HTTP response status code
+ * @param {String} [message] The HTTP response body
+ * @private
+ */
+function abortConnection (socket, code, message) {
+  if (socket.writable) {
+    message = message || http.STATUS_CODES[code];
+    socket.write(
+      `HTTP/1.1 ${code} ${http.STATUS_CODES[code]}\r\n` +
+      'Connection: close\r\n' +
+      'Content-type: text/html\r\n' +
+      `Content-Length: ${Buffer.byteLength(message)}\r\n` +
+      '\r\n' +
+      message
+    );
+  }
+
+  socket.removeListener('error', socketError);
+  socket.destroy();
+}
@@ -0,0 +1,80 @@
+{
+  "_from": "ws@~3.3.1",
+  "_id": "ws@3.3.3",
+  "_inBundle": false,
+  "_integrity": "sha512-nnWLa/NwZSt4KQJu51MYlCcSQ5g7INpOrOMt4XV8j4dqTXdmlUmSHQ8/oLC069ckre0fRsgfvsKwbTdtKLCDkA==",
+  "_location": "/socket.io/ws",
+  "_phantomChildren": {},
+  "_requested": {
+    "type": "range",
+    "registry": true,
+    "raw": "ws@~3.3.1",
+    "name": "ws",
+    "escapedName": "ws",
+    "rawSpec": "~3.3.1",
+    "saveSpec": null,
+    "fetchSpec": "~3.3.1"
+  },
+  "_requiredBy": [
+    "/socket.io/engine.io-client"
+  ],
+  "_resolved": "https://registry.npmjs.org/ws/-/ws-3.3.3.tgz",
+  "_shasum": "f1cf84fe2d5e901ebce94efaece785f187a228f2",
+  "_spec": "ws@~3.3.1",
+  "_where": "/srv/http/mmap_sarrebourg/user/themes/basic/node_modules/socket.io/node_modules/engine.io-client",
+  "author": {
+    "name": "Einar Otto Stangvik",
+    "email": "einaros@gmail.com",
+    "url": "http://2x.io"
+  },
+  "bugs": {
+    "url": "https://github.com/websockets/ws/issues"
+  },
+  "bundleDependencies": false,
+  "dependencies": {
+    "async-limiter": "~1.0.0",
+    "safe-buffer": "~5.1.0",
+    "ultron": "~1.1.0"
+  },
+  "deprecated": false,
+  "description": "Simple to use, blazing fast and thoroughly tested websocket client and server for Node.js",
+  "devDependencies": {
+    "benchmark": "~2.1.2",
+    "bufferutil": "~3.0.0",
+    "eslint": "~4.13.0",
+    "eslint-config-standard": "~10.2.0",
+    "eslint-plugin-import": "~2.8.0",
+    "eslint-plugin-node": "~5.2.0",
+    "eslint-plugin-promise": "~3.6.0",
+    "eslint-plugin-standard": "~3.0.0",
+    "mocha": "~4.0.0",
+    "nyc": "~11.3.0",
+    "utf-8-validate": "~4.0.0"
+  },
+  "files": [
+    "index.js",
+    "lib"
+  ],
+  "homepage": "https://github.com/websockets/ws",
+  "keywords": [
+    "HyBi",
+    "Push",
+    "RFC-6455",
+    "WebSocket",
+    "WebSockets",
+    "real-time"
+  ],
+  "license": "MIT",
+  "main": "index.js",
+  "name": "ws",
+  "repository": {
+    "type": "git",
+    "url": "git+https://github.com/websockets/ws.git"
+  },
+  "scripts": {
+    "integration": "eslint . && mocha test/*.integration.js",
+    "lint": "eslint .",
+    "test": "eslint . && nyc --reporter=html --reporter=text mocha test/*.test.js"
+  },
+  "version": "3.3.3"
+}
@@ -0,0 +1,108 @@
+{
+  "_from": "socket.io@2.1.1",
+  "_id": "socket.io@2.1.1",
+  "_inBundle": false,
+  "_integrity": "sha512-rORqq9c+7W0DAK3cleWNSyfv/qKXV99hV4tZe+gGLfBECw3XEhBy7x85F3wypA9688LKjtwO9pX9L33/xQI8yA==",
+  "_location": "/socket.io",
+  "_phantomChildren": {
+    "async-limiter": "1.0.0",
+    "backo2": "1.0.2",
+    "base64-arraybuffer": "0.1.5",
+    "component-bind": "1.0.0",
+    "component-emitter": "1.2.1",
+    "component-inherit": "0.0.3",
+    "engine.io-parser": "2.1.3",
+    "has-binary2": "1.0.3",
+    "has-cors": "1.1.0",
+    "indexof": "0.0.1",
+    "ms": "2.0.0",
+    "object-component": "0.0.3",
+    "parseqs": "0.0.5",
+    "parseuri": "0.0.5",
+    "safe-buffer": "5.1.2",
+    "to-array": "0.1.4",
+    "ultron": "1.1.1",
+    "xmlhttprequest-ssl": "1.5.5",
+    "yeast": "0.1.2"
+  },
+  "_requested": {
+    "type": "version",
+    "registry": true,
+    "raw": "socket.io@2.1.1",
+    "name": "socket.io",
+    "escapedName": "socket.io",
+    "rawSpec": "2.1.1",
+    "saveSpec": null,
+    "fetchSpec": "2.1.1"
+  },
+  "_requiredBy": [
+    "/browser-sync"
+  ],
+  "_resolved": "https://registry.npmjs.org/socket.io/-/socket.io-2.1.1.tgz",
+  "_shasum": "a069c5feabee3e6b214a75b40ce0652e1cfb9980",
+  "_spec": "socket.io@2.1.1",
+  "_where": "/srv/http/mmap_sarrebourg/user/themes/basic/node_modules/browser-sync",
+  "bugs": {
+    "url": "https://github.com/socketio/socket.io/issues"
+  },
+  "bundleDependencies": false,
+  "contributors": [
+    {
+      "name": "Guillermo Rauch",
+      "email": "rauchg@gmail.com"
+    },
+    {
+      "name": "Arnout Kazemier",
+      "email": "info@3rd-eden.com"
+    },
+    {
+      "name": "Vladimir Dronnikov",
+      "email": "dronnikov@gmail.com"
+    },
+    {
+      "name": "Einar Otto Stangvik",
+      "email": "einaros@gmail.com"
+    }
+  ],
+  "dependencies": {
+    "debug": "~3.1.0",
+    "engine.io": "~3.2.0",
+    "has-binary2": "~1.0.2",
+    "socket.io-adapter": "~1.1.0",
+    "socket.io-client": "2.1.1",
+    "socket.io-parser": "~3.2.0"
+  },
+  "deprecated": false,
+  "description": "node.js realtime framework server",
+  "devDependencies": {
+    "expect.js": "0.3.1",
+    "mocha": "^3.5.3",
+    "nyc": "^11.2.1",
+    "superagent": "^3.8.2",
+    "supertest": "^3.0.0"
+  },
+  "files": [
+    "lib/"
+  ],
+  "homepage": "https://github.com/socketio/socket.io#readme",
+  "keywords": [
+    "realtime",
+    "framework",
+    "websocket",
+    "tcp",
+    "events",
+    "socket",
+    "io"
+  ],
+  "license": "MIT",
+  "main": "./lib/index",
+  "name": "socket.io",
+  "repository": {
+    "type": "git",
+    "url": "git://github.com/socketio/socket.io.git"
+  },
+  "scripts": {
+    "test": "nyc mocha --reporter spec --slow 200 --bail --timeout 10000 test/socket.io.js"
+  },
+  "version": "2.1.1"
+}
				`@@ -0,0 +1 @@`
				`repo_token: SIAeZjKYlHK74rbcFvNHMUzjRiMpflxve`