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diff --git a/signaling-server/node_modules/socket.io/lib/transport.js b/signaling-server/node_modules/socket.io/lib/transport.js
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+++ b/signaling-server/node_modules/socket.io/lib/transport.js
@@ -0,0 +1,516 @@
+
+/*!
+ * socket.io-node
+ * Copyright(c) 2011 LearnBoost <dev@learnboost.com>
+ * MIT Licensed
+ */
+
+/**
+ * Module dependencies.
+ */
+
+var parser = require('./parser');
+
+/**
+ * Expose the constructor.
+ */
+
+exports = module.exports = Transport;
+
+/**
+ * Transport constructor.
+ *
+ * @api public
+ */
+
+function Transport (mng, data, req) {
+  this.manager = mng;
+  this.id = data.id;
+  this.disconnected = false;
+  this.drained = true;
+  this.handleRequest(req);
+};
+
+/**
+ * Access the logger.
+ *
+ * @api public
+ */
+
+Transport.prototype.__defineGetter__('log', function () {
+  return this.manager.log;
+});
+
+/**
+ * Access the store.
+ *
+ * @api public
+ */
+
+Transport.prototype.__defineGetter__('store', function () {
+  return this.manager.store;
+});
+
+/**
+ * Handles a request when it's set.
+ *
+ * @api private
+ */
+
+Transport.prototype.handleRequest = function (req) {
+  this.log.debug('setting request', req.method, req.url);
+  this.req = req;
+
+  if (req.method == 'GET') {
+    this.socket = req.socket;
+    this.open = true;
+    this.drained = true;
+    this.setHeartbeatInterval();
+
+    this.setHandlers();
+    this.onSocketConnect();
+  }
+};
+
+/**
+ * Called when a connection is first set.
+ *
+ * @api private
+ */
+
+Transport.prototype.onSocketConnect = function () { };
+
+/**
+ * Sets transport handlers
+ *
+ * @api private
+ */
+
+Transport.prototype.setHandlers = function () {
+  var self = this;
+
+  this.bound = {
+      end: this.onSocketEnd.bind(this)
+    , close: this.onSocketClose.bind(this)
+    , error: this.onSocketError.bind(this)
+    , drain: this.onSocketDrain.bind(this)
+  };
+
+  this.socket.on('end', this.bound.end);
+  this.socket.on('close', this.bound.close);
+  this.socket.on('error', this.bound.error);
+  this.socket.on('drain', this.bound.drain);
+
+  this.handlersSet = true;
+};
+
+/**
+ * Removes transport handlers
+ *
+ * @api private
+ */
+
+Transport.prototype.clearHandlers = function () {
+  if (this.handlersSet) {
+    this.socket.removeListener('end', this.bound.end);
+    this.socket.removeListener('close', this.bound.close);
+    this.socket.removeListener('error', this.bound.error);
+    this.socket.removeListener('drain', this.bound.drain);
+  }
+};
+
+/**
+ * Called when the connection dies
+ *
+ * @api private
+ */
+
+Transport.prototype.onSocketEnd = function () {
+  this.end('socket end');
+};
+
+/**
+ * Called when the connection dies
+ *
+ * @api private
+ */
+
+Transport.prototype.onSocketClose = function (error) {
+  this.end(error ? 'socket error' : 'socket close');
+};
+
+/**
+ * Called when the connection has an error.
+ *
+ * @api private
+ */
+
+Transport.prototype.onSocketError = function (err) {
+  if (this.open) {
+    this.socket.destroy();
+    this.onClose();
+  }
+
+  this.log.info('socket error '  + err.stack);
+};
+
+/**
+ * Called when the connection is drained.
+ *
+ * @api private
+ */
+
+Transport.prototype.onSocketDrain = function () {
+  this.drained = true;
+};
+
+/**
+ * Called upon receiving a heartbeat packet.
+ *
+ * @api private
+ */
+
+Transport.prototype.onHeartbeatClear = function () {
+  this.clearHeartbeatTimeout();
+  this.setHeartbeatInterval();
+};
+
+/**
+ * Called upon a forced disconnection.
+ *
+ * @api private
+ */
+
+Transport.prototype.onForcedDisconnect = function () {
+  if (!this.disconnected) {
+    this.log.info('transport end by forced client disconnection');
+    if (this.open) {
+      this.packet({ type: 'disconnect' });
+    }
+    this.end('booted');
+  }
+};
+
+/**
+ * Dispatches a packet.
+ *
+ * @api private
+ */
+
+Transport.prototype.onDispatch = function (packet, volatile) {
+  if (volatile) {
+    this.writeVolatile(packet);
+  } else {
+    this.write(packet);
+  }
+};
+
+/**
+ * Sets the close timeout.
+ */
+
+Transport.prototype.setCloseTimeout = function () {
+  if (!this.closeTimeout) {
+    var self = this;
+
+    this.closeTimeout = setTimeout(function () {
+      self.log.debug('fired close timeout for client', self.id);
+      self.closeTimeout = null;
+      self.end('close timeout');
+    }, this.manager.get('close timeout') * 1000);
+
+    this.log.debug('set close timeout for client', this.id);
+  }
+};
+
+/**
+ * Clears the close timeout.
+ */
+
+Transport.prototype.clearCloseTimeout = function () {
+  if (this.closeTimeout) {
+    clearTimeout(this.closeTimeout);
+    this.closeTimeout = null;
+
+    this.log.debug('cleared close timeout for client', this.id);
+  }
+};
+
+/**
+ * Sets the heartbeat timeout
+ */
+
+Transport.prototype.setHeartbeatTimeout = function () {
+  if (!this.heartbeatTimeout && this.manager.enabled('heartbeats')) {
+    var self = this;
+
+    this.heartbeatTimeout = setTimeout(function () {
+      self.log.debug('fired heartbeat timeout for client', self.id);
+      self.heartbeatTimeout = null;
+      self.end('heartbeat timeout');
+    }, this.manager.get('heartbeat timeout') * 1000);
+
+    this.log.debug('set heartbeat timeout for client', this.id);
+  }
+};
+
+/**
+ * Clears the heartbeat timeout
+ *
+ * @param text
+ */
+
+Transport.prototype.clearHeartbeatTimeout = function () {
+  if (this.heartbeatTimeout && this.manager.enabled('heartbeats')) {
+    clearTimeout(this.heartbeatTimeout);
+    this.heartbeatTimeout = null;
+    this.log.debug('cleared heartbeat timeout for client', this.id);
+  }
+};
+
+/**
+ * Sets the heartbeat interval. To be called when a connection opens and when
+ * a heartbeat is received.
+ *
+ * @api private
+ */
+
+Transport.prototype.setHeartbeatInterval = function () {
+  if (!this.heartbeatInterval && this.manager.enabled('heartbeats')) {
+    var self = this;
+
+    this.heartbeatInterval = setTimeout(function () {
+      self.heartbeat();
+      self.heartbeatInterval = null;
+    }, this.manager.get('heartbeat interval') * 1000);
+
+    this.log.debug('set heartbeat interval for client', this.id);
+  }
+};
+
+/**
+ * Clears all timeouts.
+ *
+ * @api private
+ */
+
+Transport.prototype.clearTimeouts = function () {
+  this.clearCloseTimeout();
+  this.clearHeartbeatTimeout();
+  this.clearHeartbeatInterval();
+};
+
+/**
+ * Sends a heartbeat
+ *
+ * @api private
+ */
+
+Transport.prototype.heartbeat = function () {
+  if (this.open) {
+    this.log.debug('emitting heartbeat for client', this.id);
+    this.packet({ type: 'heartbeat' });
+    this.setHeartbeatTimeout();
+  }
+
+  return this;
+};
+
+/**
+ * Handles a message.
+ *
+ * @param {Object} packet object
+ * @api private
+ */
+
+Transport.prototype.onMessage = function (packet) {
+  var current = this.manager.transports[this.id];
+
+  if ('heartbeat' == packet.type) {
+    this.log.debug('got heartbeat packet');
+
+    if (current && current.open) {
+      current.onHeartbeatClear();
+    } else {
+      this.store.publish('heartbeat-clear', this.id);
+    }
+  } else {
+    if ('disconnect' == packet.type && packet.endpoint == '') {
+      this.log.debug('got disconnection packet');
+
+      if (current) {
+        current.onForcedDisconnect();
+      } else {
+        this.store.publish('disconnect-force', this.id);
+      }
+
+      return;
+    }
+
+    if (packet.id && packet.ack != 'data') {
+      this.log.debug('acknowledging packet automatically');
+
+      var ack = parser.encodePacket({
+          type: 'ack'
+        , ackId: packet.id
+        , endpoint: packet.endpoint || ''
+      });
+
+      if (current && current.open) {
+        current.onDispatch(ack);
+      } else {
+        this.manager.onClientDispatch(this.id, ack);
+        this.store.publish('dispatch-remote', this.id, ack);
+      }
+    }
+
+    // handle packet locally or publish it
+    if (current) {
+      this.manager.onClientMessage(this.id, packet);
+    } else {
+      this.store.publish('message-remote', this.id, packet);
+    }
+  }
+};
+
+/**
+ * Clears the heartbeat interval
+ *
+ * @api private
+ */
+
+Transport.prototype.clearHeartbeatInterval = function () {
+  if (this.heartbeatInterval && this.manager.enabled('heartbeats')) {
+    clearTimeout(this.heartbeatInterval);
+    this.heartbeatInterval = null;
+    this.log.debug('cleared heartbeat interval for client', this.id);
+  }
+};
+
+/**
+ * Finishes the connection and makes sure client doesn't reopen
+ *
+ * @api private
+ */
+
+Transport.prototype.disconnect = function (reason) {
+  this.packet({ type: 'disconnect' });
+  this.end(reason);
+
+  return this;
+};
+
+/**
+ * Closes the connection.
+ *
+ * @api private
+ */
+
+Transport.prototype.close = function () {
+  if (this.open) {
+    this.doClose();
+    this.onClose();
+  }
+};
+
+/**
+ * Called upon a connection close.
+ *
+ * @api private
+ */
+
+Transport.prototype.onClose = function () {
+  if (this.open) {
+    this.setCloseTimeout();
+    this.clearHandlers();
+    this.open = false;
+    this.manager.onClose(this.id);
+    this.store.publish('close', this.id);
+  }
+};
+
+/**
+ * Cleans up the connection, considers the client disconnected.
+ *
+ * @api private
+ */
+
+Transport.prototype.end = function (reason) {
+  if (!this.disconnected) {
+    this.log.info('transport end (' + reason + ')');
+
+    var local = this.manager.transports[this.id];
+
+    this.close();
+    this.clearTimeouts();
+    this.disconnected = true;
+
+    if (local) {
+      this.manager.onClientDisconnect(this.id, reason);
+    }
+
+    this.store.publish('disconnect-remote', this.id, reason);
+  }
+};
+
+/**
+ * Signals that the transport should pause and buffer data.
+ *
+ * @api public
+ */
+
+Transport.prototype.discard = function () {
+  this.log.debug('discarding transport');
+  this.discarded = true;
+  this.clearTimeouts();
+  this.clearHandlers();
+
+  return this;
+};
+
+/**
+ * Writes an error packet with the specified reason and advice.
+ *
+ * @param {Number} advice
+ * @param {Number} reason
+ * @api public
+ */
+
+Transport.prototype.error = function (reason, advice) {
+  this.packet({
+      type: 'error'
+    , reason: reason
+    , advice: advice
+  });
+
+  this.log.warn(reason, advice ? ('client should ' + advice) : '');
+  this.end('error');
+};
+
+/**
+ * Write a packet.
+ *
+ * @api public
+ */
+
+Transport.prototype.packet = function (obj) {
+  return this.write(parser.encodePacket(obj));
+};
+
+/**
+ * Writes a volatile message.
+ *
+ * @api private
+ */
+
+Transport.prototype.writeVolatile = function (msg) {
+  if (this.open) {
+    if (this.drained) {
+      this.write(msg);
+    } else {
+      this.log.debug('ignoring volatile packet, buffer not drained');
+    }
+  } else {
+    this.log.debug('ignoring volatile packet, transport not open');
+  }
+};