text: /*
  
   This is the version 1.0.0 of the CloudBoost JS/Node SDK
   This SDK is dependent on jQuery.
  
   */
  
  var CB = CB || {}; //namespace.
  
  CB.version = "1.0.0";
  CB._isNode = false;
  CB.Socket = null;
  
  CB.io = null; //socket.io library is saved here.
  
  CB.apiUrl = 'https://api.cloudboost.io';
  
  
  CB.appId = CB.appId || null;
  CB.appKey = CB.appKey || null;
  
  if (typeof(process) !== "undefined" &&
      process.versions &&
      process.versions.node) {
      CB._isNode = true;
  }
  else
  {
      CB._isNode = false;
  }
  
  /*
   Parse codes:
   */
  CB._ajaxIE8 = function(method, url, data) {
      var promise = new CB.Promise();
      var xdr = new XDomainRequest();
      xdr.onload = function() {
          var response;
          try {
              response = JSON.parse(xdr.responseText);
          } catch (e) {
              promise.reject(e);
          }
          if (response) {
              promise.resolve(response);
          }
      };
      xdr.onerror = xdr.ontimeout = function() {
          // Let's fake a real error message.
          var fakeResponse = {
              responseText: JSON.stringify({
                  code: 500,
                  error: "IE's XDomainRequest does not supply error info."
              })
          };
          promise.reject(fakeResponse);
      };
      xdr.onprogress = function() {};
      xdr.open(method, url);
      xdr.send(data);
      return promise;
  };
  CB._loadXml = function()
  {
      var xmlhttp;
      var req = typeof(require) === 'function' ? require : null;
      // Load references to other dependencies
      if (typeof(XMLHttpRequest) !== 'undefined') {
          xmlhttp = XMLHttpRequest;
      } else if (typeof(require) === 'function' &&
          typeof(require.ensure) === 'undefined') {
          xmlhttp = req('xmlhttprequest').XMLHttpRequest;
      }
      xmlhttp = new xmlhttp();
      return xmlhttp;
  };
  CB.Promise = function() {
      this._resolved = false;
      this._rejected = false;
      this._resolvedCallbacks = [];
      this._rejectedCallbacks = [];
  
      this._isPromisesAPlusCompliant = false;
      this.is = function(promise) {
          return promise && promise.then && Object.prototype.toString.call(promise.then) === "[object Function]";
      };
      this.as = function() {
          var promise = new CB.Promise();
          promise.resolve.apply(promise, arguments);
          return promise;
      };
      this.error = function() {
          var promise = new CB.Promise();
          promise.reject.apply(promise, arguments);
          return promise;
      };
      this.when = function(promises) {
          // Allow passing in Promises as separate arguments instead of an Array.
          var objects;
          if (promises && (typeof promises.length === "undefined" || promises.length === null)) {
              objects = arguments;
          } else {
              objects = promises;
          }
  
          var total = objects.length;
          var hadError = false;
          var results = [];
          var errors = [];
          results.length = objects.length;
          errors.length = objects.length;
  
          if (total === 0) {
              return CB.Promise.as.apply(this, results);
          }
  
          var promise = new CB.Promise();
  
          var resolveOne = function() {
              total = total - 1;
              if (total === 0) {
                  if (hadError) {
                      promise.reject(errors);
                  } else {
                      promise.resolve.apply(promise, results);
                  }
              }
          };
  
          objects.forEach(function(object, i) {
              if (CB.Promise.is(object)) {
                  object.then(function(result) {
                      results[i] = result;
                      resolveOne();
                  }, function(error) {
                      errors[i] = error;
                      hadError = true;
                      resolveOne();
                  });
              } else {
                  results[i] = object;
                  resolveOne();
              }
          });
  
          return promise;
      };
      this._continueWhile = function(predicate, asyncFunction) {
          if (predicate()) {
              return asyncFunction().then(function() {
                  return CB.Promise._continueWhile(predicate, asyncFunction);
              });
          }
          return CB.Promise.as();
      }
  };
  
  CB.Promise.is = function(promise) {
      return promise && promise.then && Object.prototype.toString.call(promise.then) === "[object Function]";
  };
  /**
   * Marks this promise as fulfilled, firing any callbacks waiting on it.
   * @param {Object} result the result to pass to the callbacks.
   */
  CB.Promise.prototype["resolve"] = function(result) {
      if (this._resolved || this._rejected) {
          throw "A promise was resolved even though it had already been " +
          (this._resolved ? "resolved" : "rejected") + ".";
      }
      this._resolved = true;
      this._result = arguments;
      var results = arguments;
      this._resolvedCallbacks.forEach(function(resolvedCallback) {
          resolvedCallback.apply(this, results);
      });
      this._resolvedCallbacks = [];
      this._rejectedCallbacks = [];
  };
  
  /**
   * Marks this promise as fulfilled, firing any callbacks waiting on it.
   * @param {Object} error the error to pass to the callbacks.
   */
  CB.Promise.prototype["reject"] = function(error) {
      if (this._resolved || this._rejected) {
          throw "A promise was rejected even though it had already been " +
          (this._resolved ? "resolved" : "rejected") + ".";
      }
      this._rejected = true;
      this._error = error;
      this._rejectedCallbacks.forEach(function(rejectedCallback) {
          rejectedCallback(error);
      });
      this._resolvedCallbacks = [];
      this._rejectedCallbacks = [];
  };
  
  /**
   * Adds callbacks to be called when this promise is fulfilled. Returns a new
   * Promise that will be fulfilled when the callback is complete. It allows
   * chaining. If the callback itself returns a Promise, then the one returned
   * by "then" will not be fulfilled until that one returned by the callback
   * is fulfilled.
   * @param {Function} resolvedCallback Function that is called when this
   * Promise is resolved. Once the callback is complete, then the Promise
   * returned by "then" will also be fulfilled.
   * @param {Function} rejectedCallback Function that is called when this
   * Promise is rejected with an error. Once the callback is complete, then
   * the promise returned by "then" with be resolved successfully. If
   * rejectedCallback is null, or it returns a rejected Promise, then the
   * Promise returned by "then" will be rejected with that error.
   * @return {CB.Promise} A new Promise that will be fulfilled after this
   * Promise is fulfilled and either callback has completed. If the callback
   * returned a Promise, then this Promise will not be fulfilled until that
   * one is.
   */
  CB.Promise.prototype["then"] = function(resolvedCallback, rejectedCallback) {
      var promise = new CB.Promise();
  
      var wrappedResolvedCallback = function() {
          var result = arguments;
          if (resolvedCallback) {
              if (CB.Promise._isPromisesAPlusCompliant) {
                  try {
                      result = [resolvedCallback.apply(this, result)];
                  } catch (e) {
                      result = [CB.Promise.error(e)];
                  }
              } else {
                  result = [resolvedCallback.apply(this, result)];
              }
          }
          if (result.length === 1 && CB.Promise.is(result[0])) {
              result[0].then(function() {
                  promise.resolve.apply(promise, arguments);
              }, function(error) {
                  promise.reject(error);
              });
          } else {
              promise.resolve.apply(promise, result);
          }
      };
  
      var wrappedRejectedCallback = function(error) {
          var result = [];
          if (rejectedCallback) {
              if (CB.Promise._isPromisesAPlusCompliant) {
                  try {
                      result = [rejectedCallback(error)];
                  } catch (e) {
                      result = [CB.Promise.error(e)];
                  }
              } else {
                  result = [rejectedCallback(error)];
              }
              if (result.length === 1 && CB.Promise.is(result[0])) {
                  result[0].then(function() {
                      promise.resolve.apply(promise, arguments);
                  }, function(error) {
                      promise.reject(error);
                  });
              } else {
                  if (CB.Promise._isPromisesAPlusCompliant) {
                      promise.resolve.apply(promise, result);
                  } else {
                      promise.reject(result[0]);
                  }
              }
          } else {
              promise.reject(error);
          }
      };
  
      var runLater = function(func) {
          func.call();
      };
      if (CB.Promise._isPromisesAPlusCompliant) {
          if (typeof(window) !== 'undefined' && window.setTimeout) {
              runLater = function(func) {
                  window.setTimeout(func, 0);
              };
          } else if (typeof(process) !== 'undefined' && process.nextTick) {
              runLater = function(func) {
                  process.nextTick(func);
              };
          }
      }
  
      var self = this;
      if (this._resolved) {
          runLater(function() {
              wrappedResolvedCallback.apply(self, self._result);
          });
      } else if (this._rejected) {
          runLater(function() {
              wrappedRejectedCallback(self._error);
          });
      } else {
          this._resolvedCallbacks.push(wrappedResolvedCallback);
          this._rejectedCallbacks.push(wrappedRejectedCallback);
      }
  
      return promise;
  };
  
  /**
   * Add handlers to be called when the promise
   * is either resolved or rejected
   */
  CB.Promise.prototype["always"] = function(callback) {
      return this.then(callback, callback);
  };
  
  /**
   * Add handlers to be called when the Promise object is resolved
   */
  CB.Promise.prototype["done"] = function(callback) {
      return this.then(callback);
  };
  
  /**
   * Add handlers to be called when the Promise object is rejected
   */
  CB.Promise.prototype["fail"] = function(callback) {
      return this.then(null, callback);
  };
  
  /**
   * Run the given callbacks after this promise is fulfilled.
   * @param optionsOrCallback {} A Backbone-style options callback, or a
   * callback function. If this is an options object and contains a "model"
   * attributes, that will be passed to error callbacks as the first argument.
   * @param model {} If truthy, this will be passed as the first result of
   * error callbacks. This is for Backbone-compatability.
   * @return {CB.Promise} A promise that will be resolved after the
   * callbacks are run, with the same result as this.
   */
  CB.clone = function(obj) {
      if (! Object.prototype.toString.call(obj) === "[object Object]") return obj;
      return (Object.prototype.toString.call(obj) === "[object Array]") ? obj.slice() : new Object(obj);
  };
  
  CB.Promise.prototype["_thenRunCallbacks"] = function(optionsOrCallback, model) {
      var options;
      if (Object.prototype.toString.call(optionsOrCallback) === "[object Function]") {
          var callback = optionsOrCallback;
          options = {
              success: function(result) {
                  callback(result, null);
              },
              error: function(error) {
                  callback(null, error);
              }
          };
      } else {
          options = CB.clone(optionsOrCallback);
      }
      options = options || {};
  
      return this.then(function(result) {
          if (options.success) {
              options.success.apply(this, arguments);
          } else if (model) {
              // When there's no callback, a sync event should be triggered.
              model.trigger('sync', model, result, options);
          }
          return CB.Promise.as.apply(CB.Promise, arguments);
      }, function(error) {
          if (options.error) {
              if (! typeof model === "undefined") {
                  options.error(model, error);
              } else {
                  options.error(error);
              }
          } else if (model) {
              // When there's no error callback, an error event should be triggered.
              model.trigger('error', model, error, options);
          }
          // By explicitly returning a rejected Promise, this will work with
          // either jQuery or Promises/A semantics.
          return CB.Promise.error(error);
      });
  }
  
  /**
   * Returns a new promise that is fulfilled when all of the input promises
   * are resolved. If any promise in the list fails, then the returned promise
   * will fail with the last error. If they all succeed, then the returned
   * promise will succeed, with the results being the results of all the input
   * promises. For example: <pre>
   *   var p1 = Parse.Promise.as(1);
   *   var p2 = Parse.Promise.as(2);
   *   var p3 = Parse.Promise.as(3);
   *
   *   Parse.Promise.when(p1, p2, p3).then(function(r1, r2, r3) {
       *     console.log(r1);  // prints 1
       *     console.log(r2);  // prints 2
       *     console.log(r3);  // prints 3
       *   });</pre>
   *
   * The input promises can also be specified as an array: <pre>
   *   var promises = [p1, p2, p3];
   *   Parse.Promise.when(promises).then(function(r1, r2, r3) {
       *     console.log(r1);  // prints 1
       *     console.log(r2);  // prints 2
       *     console.log(r3);  // prints 3
       *   });
   * </pre>
   * @method when
   * @param {Array} promises a list of promises to wait for.
   * @static
   * @return {Parse.Promise} the new promise.
   */
  CB.Promise["all"] = function(promises) {
          var objects;
          if (Array.isArray(promises)) {
              objects = promises;
          } else {
              objects = arguments;
          }
  
          var total = objects.length;
          var hadError = false;
          var results = [];
          var errors = [];
          results.length = objects.length;
          errors.length = objects.length;
  
          if (total === 0) {
              return CB.Promise.as.apply(this, results);
          }
  
          var promise = new CB.Promise();
  
          var resolveOne = function resolveOne() {
              total--;
              if (total <= 0) {
                  if (hadError) {
                      promise.reject(errors);
                  } else {
                      promise.resolve(results);
                  }
              }
          };
  
          var chain = function chain(object, index) {
              if (CB.Promise.is(object)) {
                  object.then(function (result) {
                      results[index] = result;
                      resolveOne();
                  }, function (error) {
                      errors[index] = error;
                      hadError = true;
                      resolveOne();
                  });
              } else {
                  results[i] = object;
                  resolveOne();
              }
          };
          for (var i = 0; i < objects.length; i++) {
              chain(objects[i], i);
          }
  
          return promise;
  
  };
  
  
  CB.Events = {
      trigger: function(events) {
          var event, node, calls, tail, args, all, rest;
          if (!(calls = this._callbacks)) {
              return this;
          }
          all = calls.all;
          events = events.split(eventSplitter);
          rest = slice.call(arguments, 1);
  
          // For each event, walk through the linked list of callbacks twice,
          // first to trigger the event, then to trigger any `"all"` callbacks.
          event = events.shift();
          while (event) {
              node = calls[event];
              if (node) {
                  tail = node.tail;
                  while ((node = node.next) !== tail) {
                      node.callback.apply(node.context || this, rest);
                  }
              }
              node = all;
              if (node) {
                  tail = node.tail;
                  args = [event].concat(rest);
                  while ((node = node.next) !== tail) {
                      node.callback.apply(node.context || this, args);
                  }
              }
              event = events.shift();
          }
  
          return this;
      }
  }
  /**
   * Adds a callback function that should be called regardless of whether
   * this promise failed or succeeded. The callback will be given either the
   * array of results for its first argument, or the error as its second,
   * depending on whether this Promise was rejected or resolved. Returns a
   * new Promise, like "then" would.
   * @param {Function} continuation the callback.
   */
  CB.Promise.prototype["_continueWith"] = function(continuation) {
      return this.then(function() {
          return continuation(arguments, null);
      }, function(error) {
          return continuation(null, error);
      });
  };
  
  /* PRIVATE METHODS */
  CB.toJSON = function(thisObj) {
  
      if(thisObj.constructor === Array){
          for(var i=0;i<thisObj.length;i++){
              thisObj[i] = CB.toJSON(thisObj[i]);
          }
          return thisObj;
      }
  
      var id = null;
      var columnName = null;
      var tableName = null;
      var latitude = null;
      var longitude = null;
  
      if(thisObj instanceof CB.CloudGeoPoint){
          latitude = thisObj.document.latitude;
          longitude = thisObj.document.longitude;
      }
  
      if(thisObj instanceof CB.CloudFile)
          id=thisObj.document._id;
  
      if(thisObj instanceof CB.Column)
          columnName=thisObj.document.name;
  
      if(thisObj instanceof CB.CloudQueue)
          tableName=thisObj.document.name;
  
      if(thisObj instanceof CB.CloudTable)
          tableName=thisObj.document.name;
  
       if(thisObj instanceof CB.CloudCache)
          tableName=thisObj.document.name;
  
      var obj= CB._clone(thisObj,id,longitude,latitude,tableName,columnName);
  
      if (!obj instanceof CB.CloudObject || !obj instanceof CB.CloudFile || !obj instanceof CB.CloudGeoPoint
          || !obj instanceof CB.CloudTable || !obj instanceof CB.Column || !obj instanceof CB.QueueMessage || !obj instanceof CB.CloudQueue || !obj instanceof CB.CloudCache) {
          throw "Data passed is not an instance of CloudObject or CloudFile or CloudGeoPoint";
      }
  
      if(obj instanceof CB.Column)
          return obj.document;
  
      if(obj instanceof CB.CloudGeoPoint)
          return obj.document;
  
      var doc = obj.document;
  
      for (var key in doc) {
          if (doc[key] instanceof CB.CloudObject || doc[key] instanceof CB.CloudFile
              || doc[key] instanceof CB.CloudGeoPoint  || doc[key] instanceof CB.Column || doc[key] instanceof CB.QueueMessage || doc[key] instanceof CB.CloudQueue || doc[key] instanceof CB.CloudCache) {
              //if something is a relation.
              doc[key] = CB.toJSON(doc[key]); //serialize this object.
          } else if (key === 'ACL') {
              //if this is an ACL, then. Convert this from CB.ACL object to JSON - to strip all the ACL Methods.
              var acl = doc[key].document;
              doc[key] = acl;
          } else if (doc[key] instanceof Array) {
              //if this is an array.
              //then check if this is an array of CloudObjects, if yes, then serialize every CloudObject.
              if (doc[key][0] && (doc[key][0] instanceof CB.CloudObject || doc[key][0] instanceof CB.CloudFile
                  || doc[key][0] instanceof CB.CloudGeoPoint || doc[key][0] instanceof CB.Column || doc[key][0] instanceof CB.QueueMessage || doc[key][0] instanceof CB.CloudQueue || doc[key][0] instanceof CB.CloudCache )) {
                  var arr = [];
                  for (var i = 0; i < doc[key].length; i++) {
                      arr.push(CB.toJSON(doc[key][i]));
                  }
                  doc[key] = arr;
              }
          }
      }
  
      return doc;
  };
  
  CB.fromJSON = function(data, thisObj) {
  
      //prevObj : is a copy of object before update.
      //this is to deserialize JSON to a document which can be shoved into CloudObject. :)
      //if data is a list it will return a list of Cl oudObjects.
      if (!data || data === "")
          return null;
  
  
      if (data instanceof Array) {
  
          if (data[0] && data[0] instanceof Object) {
  
              var arr = [];
  
              for (var i = 0; i < data.length; i++) {
                  obj = CB.fromJSON(data[i]);
                  arr.push(obj);
              }
  
              return arr;
  
          } else {
              //this is just a normal array, not an array of CloudObjects.
              return data;
          }
      } else if (data instanceof Object && data._type) {
  
          //if this is a CloudObject.
          var document = {};
          //different types of classes.
  
          for (var key in data) {
              if(data[key] instanceof Array) {
                  document[key]=CB.fromJSON(data[key]);
              }else if (data[key] instanceof Object) {
                  if (key === 'ACL') {
                      //this is an ACL.
                      document[key] = new CB.ACL();
                      document[key].document= data[key];
  
                  } else if(data[key]._type) {
                      if(thisObj)
                          document[key] = CB.fromJSON(data[key], thisObj.get(key));
                      else
                          document[key] = CB.fromJSON(data[key]);
                  }else{
                      document[key] = data[key];
                  }
              }else {
                  document[key] = data[key];
              }
          }
  
          if(!thisObj){
              var id=null;
              var latitude = null;
              var longitude = null;
              var name = null;
              if(document._type === "file")
                  id=document._id;
              if(document._type === "point"){
                  latitude = document.latitude;
                  longitude = document.longitude;
              }
              if(document._type === "table"){
                  name = document.name;
              }
              if(document._type === "column"){
                  name = document.name;
              }
              if(document._type === "queue"){
                  name = document.name;
              }
              if(document._type === "cache"){
                  name = document.name;
              }
              var obj = CB._getObjectByType(document._type,id,longitude,latitude,name);
              obj.document = document;
  
              thisObj = obj;
          }else{
              thisObj.document = document;
          }
  
          if(thisObj instanceof CB.CloudObject || thisObj instanceof CB.CloudUser || thisObj instanceof CB.CloudRole || thisObj instanceof CB.CloudQueue || thisObj instanceof CB.QueueMessage || thisObj instanceof CB.CloudFile || thisObj instanceof CB.CloudCache){
              //activate ACL.
              if(thisObj.document["ACL"])
                  thisObj.document["ACL"].parent = thisObj;
          }
  
          return thisObj;
  
      }else {
          //if this is plain json.
          return data;
      }
  };
  
  CB._getObjectByType = function(type,id,longitude,latitude,name){
  
      var obj = null;
  
      if (type === 'custom') {
          obj = new CB.CloudObject();
      }
  
      if (type === 'queue') {
          //tablename is queue name in this instance.
          obj = new CB.CloudQueue(name);
      }
  
      if (type === 'queue-message') {
          obj = new CB.QueueMessage();
      }
  
      if (type === 'cache') {
          obj = new CB.CloudCache(name);
      }
  
      if (type === 'role') {
          obj = new CB.CloudRole();
      }
  
      if (type === 'user') {
          obj = new CB.CloudUser();
      }
  
      if (type === 'file') {
          obj = new CB.CloudFile(id);
      }
  
      if(type === 'point'){
          obj = new CB.CloudGeoPoint(0,0);
          obj.document.latitude=Number(latitude);
          obj.document.longitude=Number(longitude);
      }
  
      if(type === 'table'){
          obj = new CB.CloudTable(name);
      }
  
      if(type === 'column'){
          obj = new CB.Column(name);
      }
  
      return obj;
  };
  
  
  CB._validate = function() {
      if (!CB.appId) {
          throw "AppID is null. Please use CB.CloudApp.init to initialize your app.";
      }
  
      if(!CB.appKey){
          throw "AppKey is null. Please use CB.CloudApp.init to initialize your app.";
      }
  };
  
  
  //to check if its running under node, If yes - then export CB.
  (function () {
      // Establish the root object, `window` in the browser, or `global` on the server.
      var root = this;
      // Create a reference to this
      var _ = new Object();
  })();
  
  function _all(arrayOfPromises) {
      //this is simplilar to Q.all for jQuery promises.
      return jQuery.when.apply(jQuery, arrayOfPromises).then(function() {
          return Array.prototype.slice.call(arguments, 0);
      });
  };
  
  if(CB._isNode){
      module.exports = {};
      module.exports = CB;
  }
  
  
  CB._clone=function(obj,id,longitude,latitude,tableName,columnName){
      var n_obj = {};
      if(obj.document._type && obj.document._type != 'point') {
          n_obj = CB._getObjectByType(obj.document._type,id,longitude,latitude,tableName,columnName);
          var doc=obj.document;
          var doc2={};
          for (var key in doc) {
              if(doc[key] instanceof CB.CloudFile)
                  doc2[key]=CB._clone(doc[key],doc[key].document._id);
              else if(doc[key] instanceof CB.CloudObject){
                  doc2[key]=CB._clone(doc[key],null);
              }else if(doc[key] instanceof CB.CloudQueue){
                  doc2[key]=CB._clone(doc[key],null);
              }else if(doc[key] instanceof CB.QueueMessage){
                  doc2[key]=CB._clone(doc[key],null);
              }else if(doc[key] instanceof CB.CloudGeoPoint){
                  doc2[key]=CB._clone(doc[key], null);
              }else if(doc[key] instanceof CB.CloudCache){
                  doc2[key]=CB._clone(doc[key], null);
              }
              else
                  doc2[key]=doc[key];
          }
      }else if(obj instanceof CB.CloudGeoPoint){
          n_obj = new CB.CloudGeoPoint(obj.get('longitude'),obj.get('latitude'));
          return n_obj;
      }
  
      n_obj.document=doc2;
  
      return n_obj;
  };
  
  CB._request=function(method,url,params,isServiceUrl,isFile, progressCallback)
  {
  
      CB._validate();
  
      if(!params)
          params = {};
  
      params.sdk = "JavaScript";
  
      if(!CB.CloudApp._isConnected)
          throw "Your CloudApp is disconnected. Please use CB.CloudApp.connect() and try again.";
  
      var def = new CB.Promise();
      var xmlhttp= CB._loadXml();
      if (CB._isNode) {
          var LocalStorage = require('node-localstorage').LocalStorage;
          localStorage = new LocalStorage('./scratch');
      }
      xmlhttp.open(method,url,true);
      if(!isFile) {
          xmlhttp.setRequestHeader('Content-Type', 'text/plain');
      }
  
      if(progressCallback){
          if(typeof(xmlhttp.upload)!=="undefined"){
              xmlhttp.upload.addEventListener("progress", function(evt){
                if (evt.lengthComputable) {  
                  var percentComplete = evt.loaded / evt.total;            
                  progressCallback(percentComplete);
                }
              }, false); 
          }        
      }
  
      if(!isServiceUrl){
          var ssid = CB._getSessionId();
          if(ssid != null)
              xmlhttp.setRequestHeader('sessionID', ssid);
      }
      if(CB._isNode){
          xmlhttp.setRequestHeader("User-Agent","CB/" + CB.version + " (NodeJS " + process.versions.node + ")");
  
          if(params && typeof params ==="object"){
              params=JSON.stringify(params);
          }
      }
      if(params)
          xmlhttp.send(params);
      else
          xmlhttp.send();
      xmlhttp.onreadystatechange = function() {
          if (xmlhttp.readyState == xmlhttp.DONE) {
              if (xmlhttp.status == 200) {
                  if(!isServiceUrl){
                      var sessionID = xmlhttp.getResponseHeader('sessionID');
                      if(sessionID)
                          localStorage.setItem('sessionID', sessionID);
                      else
                          localStorage.removeItem('sessionID');
                  }
                  def.resolve(xmlhttp.responseText);
              } else {                
                  def.reject(xmlhttp.responseText);
              }
          }
      };
      return def;
  };
  
  CB._getSessionId = function() {
      return localStorage.getItem('sessionID');
  }
  
  CB._columnValidation = function(column, cloudtable){
    var defaultColumn = ['id', 'createdAt', 'updatedAt', 'ACL'];
    if(cloudtable.document.type == 'user'){
      defaultColumn.concat(['username', 'email', 'password', 'roles']);
    }else if(cloudtable.document.type == 'role'){
      defaultColumn.push('name');
    }
  
    var index = defaultColumn.indexOf(column.name.toLowerCase());
    if(index === -1)
      return true;
    else
      return false;
  };
  
  CB._tableValidation = function(tableName){
  
    if(!tableName) //if table name is empty
      throw "table name cannot be empty";
  
    if(!isNaN(tableName[0]))
      throw "table name should not start with a number";
  
    if(!tableName.match(/^\S+$/))
      throw "table name should not contain spaces";
  
    var pattern = new RegExp(/[~`!#$%\^&*+=\-\[\]\\';,/{}|\\":<>\?]/);
    if(pattern.test(tableName))
      throw "table not shoul not contain special characters";
  
  };
  
  CB._modified = function(thisObj,columnName){
      thisObj.document._isModified = true;
      if(thisObj.document._modifiedColumns) {
          if (thisObj.document._modifiedColumns.indexOf(columnName) === -1) {
              thisObj.document._modifiedColumns.push(columnName);
          }
      }else{
          thisObj.document._modifiedColumns = [];
          thisObj.document._modifiedColumns.push(columnName);
      }
  };
  
  
  function trimStart(character, string) {
      var startIndex = 0;
  
      while (string[startIndex] === character) {
          startIndex++;
      }
  
      return string.substr(startIndex);
  }
  
  CB._columnNameValidation = function(columnName){
  
  ///  var defaultColumn = ['id','createdAt', 'updatedAt', 'ACL'];
  
    if(!columnName) //if table name is empty
      throw "table name cannot be empty";
  
    /*var index = defaultColumn.indexOf(columnName.toLowerCase());
    if(index >= 0)
      throw "this column name is already in use";
  */
    if(!isNaN(columnName[0]))
      throw "column name should not start with a number";
  
    if(!columnName.match(/^\S+$/))
      throw "column name should not contain spaces";
  
    var pattern = new RegExp(/[~`!#$%\^&*+=\-\[\]\\';,/{}|\\":<>\?]/);
    if(pattern.test(columnName))
      throw "column name not should not contain special characters";
  };
  
  CB._columnDataTypeValidation = function(dataType){
  
    if(!dataType)
      throw "data type cannot be empty";
  
    var dataTypeList = ['Text', 'Email', 'URL', 'Number', 'Boolean', 'DateTime', 'GeoPoint', 'File', 'List', 'Relation', 'Object','EncryptedText'];
    var index = dataTypeList.indexOf(dataType);
    if(index < 0)
      throw "invalid data type";
  
  };
  
  CB._defaultColumns = function(type) {
      var id = new CB.Column('id');
      id.dataType = 'Id';
      id.required = true;
      id.unique = true;
      id.document.isDeletable = false;
      id.document.isEditable = false;
  
      var expires = new CB.Column('expires');
      expires.dataType = 'DateTime';
      expires.document.isDeletable = false;
      expires.document.isEditable = false;
  
      var createdAt = new CB.Column('createdAt');
      createdAt.dataType = 'DateTime';
      createdAt.required = true;
      createdAt.document.isDeletable = false;
      createdAt.document.isEditable = false;
  
      var updatedAt = new CB.Column('updatedAt');
      updatedAt.dataType = 'DateTime';
      updatedAt.required = true;
      updatedAt.document.isDeletable = false;
      updatedAt.document.isEditable = false;
  
      var ACL = new CB.Column('ACL');
      ACL.dataType = 'ACL';
      ACL.required = true;
      ACL.document.isDeletable = false;
      ACL.document.isEditable = false;
  
      var col = [id,expires,updatedAt,createdAt,ACL];
      if (type === "custom") {
          return col;
      }else if (type === "user"){
          var username = new CB.Column('username');
          username.dataType = 'Text';
          username.required = false;
          username.unique = true;
          username.document.isDeletable = false;
          username.document.isEditable = false;
  
          var email = new CB.Column('email');
          email.dataType = 'Email';
          email.unique = true;
          email.document.isDeletable = false;
          email.document.isEditable = false;
  
          var password = new CB.Column('password');
          password.dataType = 'EncryptedText';
          password.required = false;
          password.document.isDeletable = false;
          password.document.isEditable = false;
  
          var roles = new CB.Column('roles');
          roles.dataType = 'List';
          roles.relatedTo = 'Role';
          roles.relatedToType = 'role';
          roles.document.relationType = 'table';
          roles.document.isDeletable = false;
          roles.document.isEditable = false;
  
          var socialAuth = new CB.Column('socialAuth');
          socialAuth.dataType = 'List';
          socialAuth.relatedTo = 'Object';
          socialAuth.required = false;
          socialAuth.document.isDeletable = false;
          socialAuth.document.isEditable = false;
  
          var verified = new CB.Column('verified');
          verified.dataType = 'Boolean';        
          verified.required = false;
          verified.document.isDeletable = false;
          verified.document.isEditable = false;         
  
          col.push(username);
          col.push(roles);
          col.push(password);
          col.push(email);
          col.push(socialAuth);
          col.push(verified);
          return col;
      }else if(type === "role") {
          var name = new CB.Column('name');
          name.dataType = 'Text';
          name.unique = true;
          name.required = true;
          name.document.isDeletable = false;
          name.document.isEditable = false;
          col.push(name);
          return col;
      }else if(type === "device") {
          var channels = new CB.Column('channels');
          channels.dataType = 'List';
          channels.relatedTo = 'Text';         
          channels.document.isDeletable = false;
          channels.document.isEditable = false;
  
          var deviceToken = new CB.Column('deviceToken');
          deviceToken.dataType = 'Text';        
          deviceToken.unique = true;
          deviceToken.document.isDeletable = false;
          deviceToken.document.isEditable = false;
  
          var deviceOS = new CB.Column('deviceOS');
          deviceOS.dataType = 'Text';        
          deviceOS.document.isDeletable = false;
          deviceOS.document.isEditable = false;
  
          var timezone = new CB.Column('timezone');
          timezone.dataType = 'Text';        
          timezone.document.isDeletable = false;
          timezone.document.isEditable = false;
  
          var metadata = new CB.Column('metadata');
          metadata.dataType = 'Object';        
          metadata.document.isDeletable = false;
          metadata.document.isEditable = false;
  
          col.push(channels);
          col.push(deviceToken);
          col.push(deviceOS);
          col.push(timezone);
          col.push(metadata);
          return col;
      }
  };
  
  CB._fileCheck = function(obj){
  
      //obj is an instance of CloudObject.
      var deferred = new CB.Promise();
      var promises = [];
      for(var key in obj.document){
          if(obj.document[key] instanceof Array && obj.document[key][0] instanceof CB.CloudFile){
              for(var i=0;i<obj.document[key].length;i++){
                  if(!obj.document[key][i].id)
                      promises.push(obj.document[key][i].save());
              }
          }else if(obj.document[key] instanceof Object && obj.document[key] instanceof CB.CloudFile){
              if(!obj.document[key].id)
                  promises.push(obj.document[key].save());
          }
      }
      if(promises.length >0) {
          CB.Promise.all(promises).then(function () {
              var res = arguments;
              var j = 0;
              for (var key in obj.document) {
                  if (obj.document[key] instanceof Array && obj.document[key][0] instanceof CB.CloudFile) {
                      for (var i = 0; i < obj.document[key].length; i++) {
                          if(!obj.document[key][i].id) {
                              obj.document[key][i] = res[j];
                              j = j + 1;
                          }
                      }
                  } else if (obj.document[key] instanceof Object && obj.document[key] instanceof CB.CloudFile) {
                      if(!obj.document[key].id) {
                          obj.document[key] = res[j];
                          j = j + 1;
                      }
                  }
              }
              deferred.resolve(obj);
          }, function (err) {
              deferred.reject(err);
          });
      }else{
          deferred.resolve(obj);
      }
      return deferred;
  };
  
  CB._bulkObjFileCheck = function(array){
      var deferred = new CB.Promise();
      var promises = [];
      for(var i=0;i<array.length;i++){
          promises.push(CB._fileCheck(array[i]));
      }
      CB.Promise.all(promises).then(function(){
          deferred.resolve(arguments);
      },function(err){
          deferred.reject(err);
      });
      return deferred;
  };
  
  CB._generateHash = function(){
      var hash="";
      var possible="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";
      for(i=0;i<8;i++)
      {
          hash=hash+possible.charAt(Math.floor(Math.random()*possible.length));
      }
      return hash;
  };
  
  CB._isJsonString = function(str) {
      try {
          JSON.parse(str);
      } catch (e) {
          return false;
      }
      return true;
  };
  
  CB._isJsonObject= function(obj) {
      try {
          JSON.stringify(obj);
      } catch (e) {
          return false;
      }
      return true;
  };
  
  //Description : This fucntion get the content of the cookie .
  //Params : @name : Name of the cookie.
  //Returns : content as string.  
  CB._getCookie = function(name) {
      if(typeof(Storage) !== "undefined") {
          // Code for localStorage/sessionStorage.
          if(new Date(localStorage.getItem(name+"_expires"))>new Date()){
              return localStorage.getItem(name);
          }else{
              CB._deleteCookie(name);
          }
      } else {
          // Sorry! No Web Storage support..       
          if(typeof(document) !== 'undefined') {
              var name = name + "=";
              var ca = document.cookie.split(';');
              for(var i=0; i<ca.length; i++) {
                  var c = ca[i];
                  while (c.charAt(0)==' ') c = c.substring(1);
                  if (c.indexOf(name) == 0) return c.substring(name.length,c.length);
              }
              return "";
          }        
      }
      
  }
  
  //Description : Deletes the cookie
  //Params : @name : Name of the cookie.
  //Returns : void
  CB._deleteCookie = function(name){
      //save the user to the cookie. 
      if(typeof(Storage) !== "undefined") {
          // Code for localStorage/sessionStorage.
          localStorage.removeItem(name);
          localStorage.removeItem(name+"_expires");
      } else {
          if(typeof(document) !== 'undefined'){
              var d = new Date();
              d.setTime(d.getTime() + (0*0*0*0*0));
              var expires = "expires="+d.toUTCString();
              document.cookie =  name+ "=" +  + "; " + expires;
          }
      }
  }
  
  //Description : Creates cookie. 
  //Params : @name : Name of the cookie.
  //         @content : Content as string / JSON / int / etc. 
  //         @expires : Expiration time in millisecinds.
  //Returns : content as string.  
  CB._createCookie = function(name, content, expires){
      var d = new Date();
      d.setTime(d.getTime() + (expires));
      if(typeof(Storage) !== "undefined") {
          // Code for localStorage/sessionStorage.
          localStorage.setItem(name,content.toString());
          localStorage.setItem(name+"_expires",d);
      } else {
          if(typeof(document) !== 'undefined'){
              
              var expires = "expires="+d.toUTCString();
              document.cookie =  + name+"=" + content.toString() + "; " + expires;
          }
      }
  }
  
  //Description : returns query string. 
  //Params : @key : key         
  //Returns : query string.  
  CB._getQuerystringByKey = function(key){
      key = key.replace(/[\[]/, "\\[").replace(/[\]]/, "\\]");
      var regex = new RegExp("[\\?&]" + key + "=([^&#]*)"),
      results = regex.exec(location.search);
      return results === null ? "" : decodeURIComponent(results[1].replace(/\+/g, " "));
  }
  
  //Set sessionId if cbtoken is found in url
  if(typeof(location) !== 'undefined' && location.search){   
      var cbtoken=CB._getQuerystringByKey("cbtoken");
      if(cbtoken && cbtoken!==""){
          localStorage.setItem('sessionID', cbtoken);
      }    
  }
  
  //Description : returns browser name 
  //Params : null       
  //Returns : browser name. 
  CB._getThisBrowserName= function(){
  
    // check if library is used as a Node.js module
    if(typeof window !== 'undefined') {
  
        // store navigator properties to use later
        var userAgent = 'navigator' in window && 'userAgent' in navigator && navigator.userAgent.toLowerCase() || '';
        var vendor = 'navigator' in window && 'vendor' in navigator && navigator.vendor.toLowerCase() || '';
        var appVersion = 'navigator' in window && 'appVersion' in navigator && navigator.appVersion.toLowerCase() || '';
  
        var is={};
  
        // is current browser chrome?
        is.chrome = function() {
            return /chrome|chromium/i.test(userAgent) && /google inc/.test(vendor);
        };
       
        // is current browser firefox?
        is.firefox = function() {
            return /firefox/i.test(userAgent);
        };
       
        // is current browser edge?
        is.edge = function() {
            return /edge/i.test(userAgent);
        };
        
        // is current browser internet explorer?
        // parameter is optional
        is.ie = function(version) {
            if(!version) {
                return /msie/i.test(userAgent) || "ActiveXObject" in window;
            }
            if(version >= 11) {
                return "ActiveXObject" in window;
            }
            return new RegExp('msie ' + version).test(userAgent);
        };
        
        // is current browser opera?
        is.opera = function() {
            return /^Opera\//.test(userAgent) || // Opera 12 and older versions
                /\x20OPR\//.test(userAgent); // Opera 15+
        };
       
        // is current browser safari?
        is.safari = function() {
            return /safari/i.test(userAgent) && /apple computer/i.test(vendor);
        };
  
        if(is.chrome()){
          return "chrome";
        }
  
        if(is.firefox()){
          return "firefox";
        }
  
        if(is.edge()){
          return "edge";
        }
  
        if(is.ie()){
          return "ie";
        }
  
        if(is.opera()){
          return "opera";
        }
  
        if(is.safari()){
          return "safari";
        }
  
        return "unidentified";
  
    } 
  }
  
  if(!CB._isNode) {
  	//Socket.io Client library 
  	(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.io = f()}})(function(){var define,module,exports;return (function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(_dereq_,module,exports){
  
  module.exports =  _dereq_('./lib/');
  
  },{"./lib/":2}],2:[function(_dereq_,module,exports){
  
  module.exports = _dereq_('./socket');
  
  /**
   * Exports parser
   *
   * @api public
   *
   */
  module.exports.parser = _dereq_('engine.io-parser');
  
  },{"./socket":3,"engine.io-parser":19}],3:[function(_dereq_,module,exports){
  (function (global){
  /**
   * Module dependencies.
   */
  
  var transports = _dereq_('./transports');
  var Emitter = _dereq_('component-emitter');
  var debug = _dereq_('debug')('engine.io-client:socket');
  var index = _dereq_('indexof');
  var parser = _dereq_('engine.io-parser');
  var parseuri = _dereq_('parseuri');
  var parsejson = _dereq_('parsejson');
  var parseqs = _dereq_('parseqs');
  
  /**
   * Module exports.
   */
  
  module.exports = Socket;
  
  /**
   * Noop function.
   *
   * @api private
   */
  
  function noop(){}
  
  /**
   * 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.readyState = '';
    this.writeBuffer = [];
    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 ? null : opts.rejectUnauthorized;
  
    // 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;
      }
    }
  
    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 = _dereq_('./transport');
  Socket.transports = _dereq_('./transports');
  Socket.parser = _dereq_('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;
  
    // session id if we already have one
    if (this.id) query.sid = this.id;
  
    var transport = new transports[name]({
      agent: this.agent,
      hostname: this.hostname,
      port: this.port,
      secure: this.secure,
      path: this.path,
      query: query,
      forceJSONP: this.forceJSONP,
      jsonp: this.jsonp,
      forceBase64: this.forceBase64,
      enablesXDR: this.enablesXDR,
      timestampRequests: this.timestampRequests,
      timestampParam: this.timestampParam,
      policyPort: this.policyPort,
      socket: this,
      pfx: this.pfx,
      key: this.key,
      passphrase: this.passphrase,
      cert: this.cert,
      ca: this.ca,
      ciphers: this.ciphers,
      rejectUnauthorized: this.rejectUnauthorized,
      perMessageDeflate: this.perMessageDeflate,
      extraHeaders: this.extraHeaders
    });
  
    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 })
      , failed = false
      , 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) {
      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(parsejson(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;
  };
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"./transport":4,"./transports":5,"component-emitter":15,"debug":17,"engine.io-parser":19,"indexof":23,"parsejson":26,"parseqs":27,"parseuri":28}],4:[function(_dereq_,module,exports){
  /**
   * Module dependencies.
   */
  
  var parser = _dereq_('engine.io-parser');
  var Emitter = _dereq_('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;
  
    // other options for Node.js client
    this.extraHeaders = opts.extraHeaders;
  }
  
  /**
   * 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');
  };
  
  },{"component-emitter":15,"engine.io-parser":19}],5:[function(_dereq_,module,exports){
  (function (global){
  /**
   * Module dependencies
   */
  
  var XMLHttpRequest = _dereq_('xmlhttprequest-ssl');
  var XHR = _dereq_('./polling-xhr');
  var JSONP = _dereq_('./polling-jsonp');
  var websocket = _dereq_('./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);
    }
  }
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"./polling-jsonp":6,"./polling-xhr":7,"./websocket":9,"xmlhttprequest-ssl":10}],6:[function(_dereq_,module,exports){
  (function (global){
  
  /**
   * Module requirements.
   */
  
  var Polling = _dereq_('./polling');
  var inherit = _dereq_('component-inherit');
  
  /**
   * Module exports.
   */
  
  module.exports = JSONPPolling;
  
  /**
   * Cached regular expressions.
   */
  
  var rNewline = /\n/g;
  var rEscapedNewline = /\\n/g;
  
  /**
   * Global JSONP callbacks.
   */
  
  var callbacks;
  
  /**
   * Callbacks count.
   */
  
  var index = 0;
  
  /**
   * 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;
    }
  };
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"./polling":8,"component-inherit":16}],7:[function(_dereq_,module,exports){
  (function (global){
  /**
   * Module requirements.
   */
  
  var XMLHttpRequest = _dereq_('xmlhttprequest-ssl');
  var Polling = _dereq_('./polling');
  var Emitter = _dereq_('component-emitter');
  var inherit = _dereq_('component-inherit');
  var debug = _dereq_('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);
  
    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;
    } else {
      this.extraHeaders = opts.extraHeaders;
    }
  }
  
  /**
   * 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;
  
    // 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;
  
    // 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(true);
          for (var i in this.extraHeaders) {
            if (this.extraHeaders.hasOwnProperty(i)) {
              xhr.setRequestHeader(i, this.extraHeaders[i]);
            }
          }
        }
      } catch (e) {}
      if (this.supportsBinary) {
        // This has to be done after open because Firefox is stupid
        // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension
        xhr.responseType = 'arraybuffer';
      }
  
      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) {}
      }
  
      // ie6 check
      if ('withCredentials' in xhr) {
        xhr.withCredentials = true;
      }
  
      if (this.hasXDR()) {
        xhr.onload = function(){
          self.onLoad();
        };
        xhr.onerror = function(){
          self.onError(xhr.responseText);
        };
      } else {
        xhr.onreadystatechange = function(){
          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').split(';')[0];
      } catch (e) {}
      if (contentType === 'application/octet-stream') {
        data = this.xhr.response;
      } else {
        if (!this.supportsBinary) {
          data = this.xhr.responseText;
        } else {
          try {
            data = String.fromCharCode.apply(null, new Uint8Array(this.xhr.response));
          } catch (e) {
            var ui8Arr = new Uint8Array(this.xhr.response);
            var dataArray = [];
            for (var idx = 0, length = ui8Arr.length; idx < length; idx++) {
              dataArray.push(ui8Arr[idx]);
            }
  
            data = String.fromCharCode.apply(null, dataArray);
          }
        }
      }
    } 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.
   */
  
  if (global.document) {
    Request.requestsCount = 0;
    Request.requests = {};
    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();
      }
    }
  }
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"./polling":8,"component-emitter":15,"component-inherit":16,"debug":17,"xmlhttprequest-ssl":10}],8:[function(_dereq_,module,exports){
  /**
   * Module dependencies.
   */
  
  var Transport = _dereq_('../transport');
  var parseqs = _dereq_('parseqs');
  var parser = _dereq_('engine.io-parser');
  var inherit = _dereq_('component-inherit');
  var yeast = _dereq_('yeast');
  var debug = _dereq_('debug')('engine.io-client:polling');
  
  /**
   * Module exports.
   */
  
  module.exports = Polling;
  
  /**
   * Is XHR2 supported?
   */
  
  var hasXHR2 = (function() {
    var XMLHttpRequest = _dereq_('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 pending = 0;
    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');
    };
  
    var self = this;
    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 && this.port != 443) ||
       ('http' == schema && 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;
  };
  
  },{"../transport":4,"component-inherit":16,"debug":17,"engine.io-parser":19,"parseqs":27,"xmlhttprequest-ssl":10,"yeast":30}],9:[function(_dereq_,module,exports){
  (function (global){
  /**
   * Module dependencies.
   */
  
  var Transport = _dereq_('../transport');
  var parser = _dereq_('engine.io-parser');
  var parseqs = _dereq_('parseqs');
  var inherit = _dereq_('component-inherit');
  var yeast = _dereq_('yeast');
  var debug = _dereq_('debug')('engine.io-client:websocket');
  var BrowserWebSocket = global.WebSocket || global.MozWebSocket;
  
  /**
   * 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') {
    try {
      WebSocket = _dereq_('ws');
    } catch (e) { }
  }
  
  /**
   * 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;
    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 self = this;
    var uri = this.uri();
    var protocols = void(0);
    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;
    }
  
    this.ws = BrowserWebSocket ? new WebSocket(uri) : new WebSocket(uri, protocols, opts);
  
    if (this.ws.binaryType === undefined) {
      this.supportsBinary = false;
    }
  
    if (this.ws.supports && this.ws.supports.binary) {
      this.supportsBinary = true;
      this.ws.binaryType = 'buffer';
    } 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);
    };
  };
  
  /**
   * Override `onData` to use a timer on iOS.
   * See: https://gist.github.com/mloughran/2052006
   *
   * @api private
   */
  
  if ('undefined' != typeof navigator
    && /iPad|iPhone|iPod/i.test(navigator.userAgent)) {
    WS.prototype.onData = function(data){
      var self = this;
      setTimeout(function(){
        Transport.prototype.onData.call(self, data);
      }, 0);
    };
  }
  
  /**
   * 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 (!BrowserWebSocket) {
            // 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 (BrowserWebSocket) {
              // 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 && this.port != 443)
      || ('ws' == schema && 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);
  };
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"../transport":4,"component-inherit":16,"debug":17,"engine.io-parser":19,"parseqs":27,"ws":undefined,"yeast":30}],10:[function(_dereq_,module,exports){
  // browser shim for xmlhttprequest module
  var hasCORS = _dereq_('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 ActiveXObject('Microsoft.XMLHTTP');
      } catch(e) { }
    }
  }
  
  },{"has-cors":22}],11:[function(_dereq_,module,exports){
  module.exports = after
  
  function after(count, callback, err_cb) {
      var bail = false
      err_cb = err_cb || noop
      proxy.count = count
  
      return (count === 0) ? callback() : proxy
  
      function proxy(err, result) {
          if (proxy.count <= 0) {
              throw new Error('after called too many times')
          }
          --proxy.count
  
          // after first error, rest are passed to err_cb
          if (err) {
              bail = true
              callback(err)
              // future error callbacks will go to error handler
              callback = err_cb
          } else if (proxy.count === 0 && !bail) {
              callback(null, result)
          }
      }
  }
  
  function noop() {}
  
  },{}],12:[function(_dereq_,module,exports){
  /**
   * An abstraction for slicing an arraybuffer even when
   * ArrayBuffer.prototype.slice is not supported
   *
   * @api public
   */
  
  module.exports = function(arraybuffer, start, end) {
    var bytes = arraybuffer.byteLength;
    start = start || 0;
    end = end || bytes;
  
    if (arraybuffer.slice) { return arraybuffer.slice(start, end); }
  
    if (start < 0) { start += bytes; }
    if (end < 0) { end += bytes; }
    if (end > bytes) { end = bytes; }
  
    if (start >= bytes || start >= end || bytes === 0) {
      return new ArrayBuffer(0);
    }
  
    var abv = new Uint8Array(arraybuffer);
    var result = new Uint8Array(end - start);
    for (var i = start, ii = 0; i < end; i++, ii++) {
      result[ii] = abv[i];
    }
    return result.buffer;
  };
  
  },{}],13:[function(_dereq_,module,exports){
  /*
   * base64-arraybuffer
   * https://github.com/niklasvh/base64-arraybuffer
   *
   * Copyright (c) 2012 Niklas von Hertzen
   * Licensed under the MIT license.
   */
  (function(chars){
    "use strict";
  
    exports.encode = function(arraybuffer) {
      var bytes = new Uint8Array(arraybuffer),
      i, len = bytes.length, base64 = "";
  
      for (i = 0; i < len; i+=3) {
        base64 += chars[bytes[i] >> 2];
        base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];
        base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];
        base64 += chars[bytes[i + 2] & 63];
      }
  
      if ((len % 3) === 2) {
        base64 = base64.substring(0, base64.length - 1) + "=";
      } else if (len % 3 === 1) {
        base64 = base64.substring(0, base64.length - 2) + "==";
      }
  
      return base64;
    };
  
    exports.decode =  function(base64) {
      var bufferLength = base64.length * 0.75,
      len = base64.length, i, p = 0,
      encoded1, encoded2, encoded3, encoded4;
  
      if (base64[base64.length - 1] === "=") {
        bufferLength--;
        if (base64[base64.length - 2] === "=") {
          bufferLength--;
        }
      }
  
      var arraybuffer = new ArrayBuffer(bufferLength),
      bytes = new Uint8Array(arraybuffer);
  
      for (i = 0; i < len; i+=4) {
        encoded1 = chars.indexOf(base64[i]);
        encoded2 = chars.indexOf(base64[i+1]);
        encoded3 = chars.indexOf(base64[i+2]);
        encoded4 = chars.indexOf(base64[i+3]);
  
        bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);
        bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);
        bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);
      }
  
      return arraybuffer;
    };
  })("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/");
  
  },{}],14:[function(_dereq_,module,exports){
  (function (global){
  /**
   * Create a blob builder even when vendor prefixes exist
   */
  
  var BlobBuilder = global.BlobBuilder
    || global.WebKitBlobBuilder
    || global.MSBlobBuilder
    || global.MozBlobBuilder;
  
  /**
   * Check if Blob constructor is supported
   */
  
  var blobSupported = (function() {
    try {
      var a = new Blob(['hi']);
      return a.size === 2;
    } catch(e) {
      return false;
    }
  })();
  
  /**
   * Check if Blob constructor supports ArrayBufferViews
   * Fails in Safari 6, so we need to map to ArrayBuffers there.
   */
  
  var blobSupportsArrayBufferView = blobSupported && (function() {
    try {
      var b = new Blob([new Uint8Array([1,2])]);
      return b.size === 2;
    } catch(e) {
      return false;
    }
  })();
  
  /**
   * Check if BlobBuilder is supported
   */
  
  var blobBuilderSupported = BlobBuilder
    && BlobBuilder.prototype.append
    && BlobBuilder.prototype.getBlob;
  
  /**
   * Helper function that maps ArrayBufferViews to ArrayBuffers
   * Used by BlobBuilder constructor and old browsers that didn't
   * support it in the Blob constructor.
   */
  
  function mapArrayBufferViews(ary) {
    for (var i = 0; i < ary.length; i++) {
      var chunk = ary[i];
      if (chunk.buffer instanceof ArrayBuffer) {
        var buf = chunk.buffer;
  
        // if this is a subarray, make a copy so we only
        // include the subarray region from the underlying buffer
        if (chunk.byteLength !== buf.byteLength) {
          var copy = new Uint8Array(chunk.byteLength);
          copy.set(new Uint8Array(buf, chunk.byteOffset, chunk.byteLength));
          buf = copy.buffer;
        }
  
        ary[i] = buf;
      }
    }
  }
  
  function BlobBuilderConstructor(ary, options) {
    options = options || {};
  
    var bb = new BlobBuilder();
    mapArrayBufferViews(ary);
  
    for (var i = 0; i < ary.length; i++) {
      bb.append(ary[i]);
    }
  
    return (options.type) ? bb.getBlob(options.type) : bb.getBlob();
  };
  
  function BlobConstructor(ary, options) {
    mapArrayBufferViews(ary);
    return new Blob(ary, options || {});
  };
  
  module.exports = (function() {
    if (blobSupported) {
      return blobSupportsArrayBufferView ? global.Blob : BlobConstructor;
    } else if (blobBuilderSupported) {
      return BlobBuilderConstructor;
    } else {
      return undefined;
    }
  })();
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{}],15:[function(_dereq_,module,exports){
  
  /**
   * Expose `Emitter`.
   */
  
  module.exports = Emitter;
  
  /**
   * Initialize a new `Emitter`.
   *
   * @api public
   */
  
  function Emitter(obj) {
    if (obj) return mixin(obj);
  };
  
  /**
   * Mixin the emitter properties.
   *
   * @param {Object} obj
   * @return {Object}
   * @api private
   */
  
  function mixin(obj) {
    for (var key in Emitter.prototype) {
      obj[key] = Emitter.prototype[key];
    }
    return obj;
  }
  
  /**
   * Listen on the given `event` with `fn`.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */
  
  Emitter.prototype.on =
  Emitter.prototype.addEventListener = function(event, fn){
    this._callbacks = this._callbacks || {};
    (this._callbacks[event] = this._callbacks[event] || [])
      .push(fn);
    return this;
  };
  
  /**
   * Adds an `event` listener that will be invoked a single
   * time then automatically removed.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */
  
  Emitter.prototype.once = function(event, fn){
    var self = this;
    this._callbacks = this._callbacks || {};
  
    function on() {
      self.off(event, on);
      fn.apply(this, arguments);
    }
  
    on.fn = fn;
    this.on(event, on);
    return this;
  };
  
  /**
   * Remove the given callback for `event` or all
   * registered callbacks.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */
  
  Emitter.prototype.off =
  Emitter.prototype.removeListener =
  Emitter.prototype.removeAllListeners =
  Emitter.prototype.removeEventListener = function(event, fn){
    this._callbacks = this._callbacks || {};
  
    // all
    if (0 == arguments.length) {
      this._callbacks = {};
      return this;
    }
  
    // specific event
    var callbacks = this._callbacks[event];
    if (!callbacks) return this;
  
    // remove all handlers
    if (1 == arguments.length) {
      delete this._callbacks[event];
      return this;
    }
  
    // remove specific handler
    var cb;
    for (var i = 0; i < callbacks.length; i++) {
      cb = callbacks[i];
      if (cb === fn || cb.fn === fn) {
        callbacks.splice(i, 1);
        break;
      }
    }
    return this;
  };
  
  /**
   * Emit `event` with the given args.
   *
   * @param {String} event
   * @param {Mixed} ...
   * @return {Emitter}
   */
  
  Emitter.prototype.emit = function(event){
    this._callbacks = this._callbacks || {};
    var args = [].slice.call(arguments, 1)
      , callbacks = this._callbacks[event];
  
    if (callbacks) {
      callbacks = callbacks.slice(0);
      for (var i = 0, len = callbacks.length; i < len; ++i) {
        callbacks[i].apply(this, args);
      }
    }
  
    return this;
  };
  
  /**
   * Return array of callbacks for `event`.
   *
   * @param {String} event
   * @return {Array}
   * @api public
   */
  
  Emitter.prototype.listeners = function(event){
    this._callbacks = this._callbacks || {};
    return this._callbacks[event] || [];
  };
  
  /**
   * Check if this emitter has `event` handlers.
   *
   * @param {String} event
   * @return {Boolean}
   * @api public
   */
  
  Emitter.prototype.hasListeners = function(event){
    return !! this.listeners(event).length;
  };
  
  },{}],16:[function(_dereq_,module,exports){
  
  module.exports = function(a, b){
    var fn = function(){};
    fn.prototype = b.prototype;
    a.prototype = new fn;
    a.prototype.constructor = a;
  };
  },{}],17:[function(_dereq_,module,exports){
  
  /**
   * This is the web browser implementation of `debug()`.
   *
   * Expose `debug()` as the module.
   */
  
  exports = module.exports = _dereq_('./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 = [
    'lightseagreen',
    'forestgreen',
    'goldenrod',
    'dodgerblue',
    'darkorchid',
    'crimson'
  ];
  
  /**
   * 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() {
    // is webkit? http://stackoverflow.com/a/16459606/376773
    return ('WebkitAppearance' in document.documentElement.style) ||
      // is firebug? http://stackoverflow.com/a/398120/376773
      (window.console && (console.firebug || (console.exception && console.table))) ||
      // is firefox >= v31?
      // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages
      (navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31);
  }
  
  /**
   * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.
   */
  
  exports.formatters.j = function(v) {
    return JSON.stringify(v);
  };
  
  
  /**
   * Colorize log arguments if enabled.
   *
   * @api public
   */
  
  function formatArgs() {
    var args = arguments;
    var useColors = this.useColors;
  
    args[0] = (useColors ? '%c' : '')
      + this.namespace
      + (useColors ? ' %c' : ' ')
      + args[0]
      + (useColors ? '%c ' : ' ')
      + '+' + exports.humanize(this.diff);
  
    if (!useColors) return args;
  
    var c = 'color: ' + this.color;
    args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));
  
    // 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-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);
    return args;
  }
  
  /**
   * 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) {}
    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) {}
  }
  
  },{"./debug":18}],18:[function(_dereq_,module,exports){
  
  /**
   * This is the common logic for both the Node.js and web browser
   * implementations of `debug()`.
   *
   * Expose `debug()` as the module.
   */
  
  exports = module.exports = debug;
  exports.coerce = coerce;
  exports.disable = disable;
  exports.enable = enable;
  exports.enabled = enabled;
  exports.humanize = _dereq_('ms');
  
  /**
   * 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, lowercased letter, i.e. "n".
   */
  
  exports.formatters = {};
  
  /**
   * Previously assigned color.
   */
  
  var prevColor = 0;
  
  /**
   * Previous log timestamp.
   */
  
  var prevTime;
  
  /**
   * Select a color.
   *
   * @return {Number}
   * @api private
   */
  
  function selectColor() {
    return exports.colors[prevColor++ % exports.colors.length];
  }
  
  /**
   * Create a debugger with the given `namespace`.
   *
   * @param {String} namespace
   * @return {Function}
   * @api public
   */
  
  function debug(namespace) {
  
    // define the `disabled` version
    function disabled() {
    }
    disabled.enabled = false;
  
    // define the `enabled` version
    function enabled() {
  
      var self = enabled;
  
      // set `diff` timestamp
      var curr = +new Date();
      var ms = curr - (prevTime || curr);
      self.diff = ms;
      self.prev = prevTime;
      self.curr = curr;
      prevTime = curr;
  
      // add the `color` if not set
      if (null == self.useColors) self.useColors = exports.useColors();
      if (null == self.color && self.useColors) self.color = selectColor();
  
      var args = Array.prototype.slice.call(arguments);
  
      args[0] = exports.coerce(args[0]);
  
      if ('string' !== typeof args[0]) {
        // anything else let's inspect with %o
        args = ['%o'].concat(args);
      }
  
      // apply any `formatters` transformations
      var index = 0;
      args[0] = args[0].replace(/%([a-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;
      });
  
      if ('function' === typeof exports.formatArgs) {
        args = exports.formatArgs.apply(self, args);
      }
      var logFn = enabled.log || exports.log || console.log.bind(console);
      logFn.apply(self, args);
    }
    enabled.enabled = true;
  
    var fn = exports.enabled(namespace) ? enabled : disabled;
  
    fn.namespace = namespace;
  
    return fn;
  }
  
  /**
   * 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);
  
    var split = (namespaces || '').split(/[\s,]+/);
    var len = split.length;
  
    for (var 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) + '$'));
      } else {
        exports.names.push(new RegExp('^' + namespaces + '$'));
      }
    }
  }
  
  /**
   * 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) {
    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;
  }
  
  },{"ms":25}],19:[function(_dereq_,module,exports){
  (function (global){
  /**
   * Module dependencies.
   */
  
  var keys = _dereq_('./keys');
  var hasBinary = _dereq_('has-binary');
  var sliceBuffer = _dereq_('arraybuffer.slice');
  var base64encoder = _dereq_('base64-arraybuffer');
  var after = _dereq_('after');
  var utf8 = _dereq_('utf8');
  
  /**
   * Check if we are running an android browser. That requires us to use
   * ArrayBuffer with polling transports...
   *
   * http://ghinda.net/jpeg-blob-ajax-android/
   */
  
  var isAndroid = navigator.userAgent.match(/Android/i);
  
  /**
   * Check if we are running in PhantomJS.
   * Uploading a Blob with PhantomJS does not work correctly, as reported here:
   * https://github.com/ariya/phantomjs/issues/11395
   * @type boolean
   */
  var isPhantomJS = /PhantomJS/i.test(navigator.userAgent);
  
  /**
   * When true, avoids using Blobs to encode payloads.
   * @type boolean
   */
  var dontSendBlobs = isAndroid || isPhantomJS;
  
  /**
   * Current protocol version.
   */
  
  exports.protocol = 3;
  
  /**
   * Packet types.
   */
  
  var packets = exports.packets = {
      open:     0    // non-ws
    , close:    1    // non-ws
    , ping:     2
    , pong:     3
    , message:  4
    , upgrade:  5
    , noop:     6
  };
  
  var packetslist = keys(packets);
  
  /**
   * Premade error packet.
   */
  
  var err = { type: 'error', data: 'parser error' };
  
  /**
   * Create a blob api even for blob builder when vendor prefixes exist
   */
  
  var Blob = _dereq_('blob');
  
  /**
   * Encodes a packet.
   *
   *     <packet type id> [ <data> ]
   *
   * Example:
   *
   *     5hello world
   *     3
   *     4
   *
   * Binary is encoded in an identical principle
   *
   * @api private
   */
  
  exports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {
    if ('function' == typeof supportsBinary) {
      callback = supportsBinary;
      supportsBinary = false;
    }
  
    if ('function' == typeof utf8encode) {
      callback = utf8encode;
      utf8encode = null;
    }
  
    var data = (packet.data === undefined)
      ? undefined
      : packet.data.buffer || packet.data;
  
    if (global.ArrayBuffer && data instanceof ArrayBuffer) {
      return encodeArrayBuffer(packet, supportsBinary, callback);
    } else if (Blob && data instanceof global.Blob) {
      return encodeBlob(packet, supportsBinary, callback);
    }
  
    // might be an object with { base64: true, data: dataAsBase64String }
    if (data && data.base64) {
      return encodeBase64Object(packet, callback);
    }
  
    // Sending data as a utf-8 string
    var encoded = packets[packet.type];
  
    // data fragment is optional
    if (undefined !== packet.data) {
      encoded += utf8encode ? utf8.encode(String(packet.data)) : String(packet.data);
    }
  
    return callback('' + encoded);
  
  };
  
  function encodeBase64Object(packet, callback) {
    // packet data is an object { base64: true, data: dataAsBase64String }
    var message = 'b' + exports.packets[packet.type] + packet.data.data;
    return callback(message);
  }
  
  /**
   * Encode packet helpers for binary types
   */
  
  function encodeArrayBuffer(packet, supportsBinary, callback) {
    if (!supportsBinary) {
      return exports.encodeBase64Packet(packet, callback);
    }
  
    var data = packet.data;
    var contentArray = new Uint8Array(data);
    var resultBuffer = new Uint8Array(1 + data.byteLength);
  
    resultBuffer[0] = packets[packet.type];
    for (var i = 0; i < contentArray.length; i++) {
      resultBuffer[i+1] = contentArray[i];
    }
  
    return callback(resultBuffer.buffer);
  }
  
  function encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {
    if (!supportsBinary) {
      return exports.encodeBase64Packet(packet, callback);
    }
  
    var fr = new FileReader();
    fr.onload = function() {
      packet.data = fr.result;
      exports.encodePacket(packet, supportsBinary, true, callback);
    };
    return fr.readAsArrayBuffer(packet.data);
  }
  
  function encodeBlob(packet, supportsBinary, callback) {
    if (!supportsBinary) {
      return exports.encodeBase64Packet(packet, callback);
    }
  
    if (dontSendBlobs) {
      return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);
    }
  
    var length = new Uint8Array(1);
    length[0] = packets[packet.type];
    var blob = new Blob([length.buffer, packet.data]);
  
    return callback(blob);
  }
  
  /**
   * Encodes a packet with binary data in a base64 string
   *
   * @param {Object} packet, has `type` and `data`
   * @return {String} base64 encoded message
   */
  
  exports.encodeBase64Packet = function(packet, callback) {
    var message = 'b' + exports.packets[packet.type];
    if (Blob && packet.data instanceof global.Blob) {
      var fr = new FileReader();
      fr.onload = function() {
        var b64 = fr.result.split(',')[1];
        callback(message + b64);
      };
      return fr.readAsDataURL(packet.data);
    }
  
    var b64data;
    try {
      b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));
    } catch (e) {
      // iPhone Safari doesn't let you apply with typed arrays
      var typed = new Uint8Array(packet.data);
      var basic = new Array(typed.length);
      for (var i = 0; i < typed.length; i++) {
        basic[i] = typed[i];
      }
      b64data = String.fromCharCode.apply(null, basic);
    }
    message += global.btoa(b64data);
    return callback(message);
  };
  
  /**
   * Decodes a packet. Changes format to Blob if requested.
   *
   * @return {Object} with `type` and `data` (if any)
   * @api private
   */
  
  exports.decodePacket = function (data, binaryType, utf8decode) {
    // String data
    if (typeof data == 'string' || data === undefined) {
      if (data.charAt(0) == 'b') {
        return exports.decodeBase64Packet(data.substr(1), binaryType);
      }
  
      if (utf8decode) {
        try {
          data = utf8.decode(data);
        } catch (e) {
          return err;
        }
      }
      var type = data.charAt(0);
  
      if (Number(type) != type || !packetslist[type]) {
        return err;
      }
  
      if (data.length > 1) {
        return { type: packetslist[type], data: data.substring(1) };
      } else {
        return { type: packetslist[type] };
      }
    }
  
    var asArray = new Uint8Array(data);
    var type = asArray[0];
    var rest = sliceBuffer(data, 1);
    if (Blob && binaryType === 'blob') {
      rest = new Blob([rest]);
    }
    return { type: packetslist[type], data: rest };
  };
  
  /**
   * Decodes a packet encoded in a base64 string
   *
   * @param {String} base64 encoded message
   * @return {Object} with `type` and `data` (if any)
   */
  
  exports.decodeBase64Packet = function(msg, binaryType) {
    var type = packetslist[msg.charAt(0)];
    if (!global.ArrayBuffer) {
      return { type: type, data: { base64: true, data: msg.substr(1) } };
    }
  
    var data = base64encoder.decode(msg.substr(1));
  
    if (binaryType === 'blob' && Blob) {
      data = new Blob([data]);
    }
  
    return { type: type, data: data };
  };
  
  /**
   * Encodes multiple messages (payload).
   *
   *     <length>:data
   *
   * Example:
   *
   *     11:hello world2:hi
   *
   * If any contents are binary, they will be encoded as base64 strings. Base64
   * encoded strings are marked with a b before the length specifier
   *
   * @param {Array} packets
   * @api private
   */
  
  exports.encodePayload = function (packets, supportsBinary, callback) {
    if (typeof supportsBinary == 'function') {
      callback = supportsBinary;
      supportsBinary = null;
    }
  
    var isBinary = hasBinary(packets);
  
    if (supportsBinary && isBinary) {
      if (Blob && !dontSendBlobs) {
        return exports.encodePayloadAsBlob(packets, callback);
      }
  
      return exports.encodePayloadAsArrayBuffer(packets, callback);
    }
  
    if (!packets.length) {
      return callback('0:');
    }
  
    function setLengthHeader(message) {
      return message.length + ':' + message;
    }
  
    function encodeOne(packet, doneCallback) {
      exports.encodePacket(packet, !isBinary ? false : supportsBinary, true, function(message) {
        doneCallback(null, setLengthHeader(message));
      });
    }
  
    map(packets, encodeOne, function(err, results) {
      return callback(results.join(''));
    });
  };
  
  /**
   * Async array map using after
   */
  
  function map(ary, each, done) {
    var result = new Array(ary.length);
    var next = after(ary.length, done);
  
    var eachWithIndex = function(i, el, cb) {
      each(el, function(error, msg) {
        result[i] = msg;
        cb(error, result);
      });
    };
  
    for (var i = 0; i < ary.length; i++) {
      eachWithIndex(i, ary[i], next);
    }
  }
  
  /*
   * Decodes data when a payload is maybe expected. Possible binary contents are
   * decoded from their base64 representation
   *
   * @param {String} data, callback method
   * @api public
   */
  
  exports.decodePayload = function (data, binaryType, callback) {
    if (typeof data != 'string') {
      return exports.decodePayloadAsBinary(data, binaryType, callback);
    }
  
    if (typeof binaryType === 'function') {
      callback = binaryType;
      binaryType = null;
    }
  
    var packet;
    if (data == '') {
      // parser error - ignoring payload
      return callback(err, 0, 1);
    }
  
    var length = ''
      , n, msg;
  
    for (var i = 0, l = data.length; i < l; i++) {
      var chr = data.charAt(i);
  
      if (':' != chr) {
        length += chr;
      } else {
        if ('' == length || (length != (n = Number(length)))) {
          // parser error - ignoring payload
          return callback(err, 0, 1);
        }
  
        msg = data.substr(i + 1, n);
  
        if (length != msg.length) {
          // parser error - ignoring payload
          return callback(err, 0, 1);
        }
  
        if (msg.length) {
          packet = exports.decodePacket(msg, binaryType, true);
  
          if (err.type == packet.type && err.data == packet.data) {
            // parser error in individual packet - ignoring payload
            return callback(err, 0, 1);
          }
  
          var ret = callback(packet, i + n, l);
          if (false === ret) return;
        }
  
        // advance cursor
        i += n;
        length = '';
      }
    }
  
    if (length != '') {
      // parser error - ignoring payload
      return callback(err, 0, 1);
    }
  
  };
  
  /**
   * Encodes multiple messages (payload) as binary.
   *
   * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number
   * 255><data>
   *
   * Example:
   * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers
   *
   * @param {Array} packets
   * @return {ArrayBuffer} encoded payload
   * @api private
   */
  
  exports.encodePayloadAsArrayBuffer = function(packets, callback) {
    if (!packets.length) {
      return callback(new ArrayBuffer(0));
    }
  
    function encodeOne(packet, doneCallback) {
      exports.encodePacket(packet, true, true, function(data) {
        return doneCallback(null, data);
      });
    }
  
    map(packets, encodeOne, function(err, encodedPackets) {
      var totalLength = encodedPackets.reduce(function(acc, p) {
        var len;
        if (typeof p === 'string'){
          len = p.length;
        } else {
          len = p.byteLength;
        }
        return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2
      }, 0);
  
      var resultArray = new Uint8Array(totalLength);
  
      var bufferIndex = 0;
      encodedPackets.forEach(function(p) {
        var isString = typeof p === 'string';
        var ab = p;
        if (isString) {
          var view = new Uint8Array(p.length);
          for (var i = 0; i < p.length; i++) {
            view[i] = p.charCodeAt(i);
          }
          ab = view.buffer;
        }
  
        if (isString) { // not true binary
          resultArray[bufferIndex++] = 0;
        } else { // true binary
          resultArray[bufferIndex++] = 1;
        }
  
        var lenStr = ab.byteLength.toString();
        for (var i = 0; i < lenStr.length; i++) {
          resultArray[bufferIndex++] = parseInt(lenStr[i]);
        }
        resultArray[bufferIndex++] = 255;
  
        var view = new Uint8Array(ab);
        for (var i = 0; i < view.length; i++) {
          resultArray[bufferIndex++] = view[i];
        }
      });
  
      return callback(resultArray.buffer);
    });
  };
  
  /**
   * Encode as Blob
   */
  
  exports.encodePayloadAsBlob = function(packets, callback) {
    function encodeOne(packet, doneCallback) {
      exports.encodePacket(packet, true, true, function(encoded) {
        var binaryIdentifier = new Uint8Array(1);
        binaryIdentifier[0] = 1;
        if (typeof encoded === 'string') {
          var view = new Uint8Array(encoded.length);
          for (var i = 0; i < encoded.length; i++) {
            view[i] = encoded.charCodeAt(i);
          }
          encoded = view.buffer;
          binaryIdentifier[0] = 0;
        }
  
        var len = (encoded instanceof ArrayBuffer)
          ? encoded.byteLength
          : encoded.size;
  
        var lenStr = len.toString();
        var lengthAry = new Uint8Array(lenStr.length + 1);
        for (var i = 0; i < lenStr.length; i++) {
          lengthAry[i] = parseInt(lenStr[i]);
        }
        lengthAry[lenStr.length] = 255;
  
        if (Blob) {
          var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);
          doneCallback(null, blob);
        }
      });
    }
  
    map(packets, encodeOne, function(err, results) {
      return callback(new Blob(results));
    });
  };
  
  /*
   * Decodes data when a payload is maybe expected. Strings are decoded by
   * interpreting each byte as a key code for entries marked to start with 0. See
   * description of encodePayloadAsBinary
   *
   * @param {ArrayBuffer} data, callback method
   * @api public
   */
  
  exports.decodePayloadAsBinary = function (data, binaryType, callback) {
    if (typeof binaryType === 'function') {
      callback = binaryType;
      binaryType = null;
    }
  
    var bufferTail = data;
    var buffers = [];
  
    var numberTooLong = false;
    while (bufferTail.byteLength > 0) {
      var tailArray = new Uint8Array(bufferTail);
      var isString = tailArray[0] === 0;
      var msgLength = '';
  
      for (var i = 1; ; i++) {
        if (tailArray[i] == 255) break;
  
        if (msgLength.length > 310) {
          numberTooLong = true;
          break;
        }
  
        msgLength += tailArray[i];
      }
  
      if(numberTooLong) return callback(err, 0, 1);
  
      bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);
      msgLength = parseInt(msgLength);
  
      var msg = sliceBuffer(bufferTail, 0, msgLength);
      if (isString) {
        try {
          msg = String.fromCharCode.apply(null, new Uint8Array(msg));
        } catch (e) {
          // iPhone Safari doesn't let you apply to typed arrays
          var typed = new Uint8Array(msg);
          msg = '';
          for (var i = 0; i < typed.length; i++) {
            msg += String.fromCharCode(typed[i]);
          }
        }
      }
  
      buffers.push(msg);
      bufferTail = sliceBuffer(bufferTail, msgLength);
    }
  
    var total = buffers.length;
    buffers.forEach(function(buffer, i) {
      callback(exports.decodePacket(buffer, binaryType, true), i, total);
    });
  };
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"./keys":20,"after":11,"arraybuffer.slice":12,"base64-arraybuffer":13,"blob":14,"has-binary":21,"utf8":29}],20:[function(_dereq_,module,exports){
  
  /**
   * Gets the keys for an object.
   *
   * @return {Array} keys
   * @api private
   */
  
  module.exports = Object.keys || function keys (obj){
    var arr = [];
    var has = Object.prototype.hasOwnProperty;
  
    for (var i in obj) {
      if (has.call(obj, i)) {
        arr.push(i);
      }
    }
    return arr;
  };
  
  },{}],21:[function(_dereq_,module,exports){
  (function (global){
  
  /*
   * Module requirements.
   */
  
  var isArray = _dereq_('isarray');
  
  /**
   * Module exports.
   */
  
  module.exports = hasBinary;
  
  /**
   * Checks for binary data.
   *
   * Right now only Buffer and ArrayBuffer are supported..
   *
   * @param {Object} anything
   * @api public
   */
  
  function hasBinary(data) {
  
    function _hasBinary(obj) {
      if (!obj) return false;
  
      if ( (global.Buffer && global.Buffer.isBuffer(obj)) ||
           (global.ArrayBuffer && obj instanceof ArrayBuffer) ||
           (global.Blob && obj instanceof Blob) ||
           (global.File && obj instanceof File)
          ) {
        return true;
      }
  
      if (isArray(obj)) {
        for (var i = 0; i < obj.length; i++) {
            if (_hasBinary(obj[i])) {
                return true;
            }
        }
      } else if (obj && 'object' == typeof obj) {
        if (obj.toJSON) {
          obj = obj.toJSON();
        }
  
        for (var key in obj) {
          if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {
            return true;
          }
        }
      }
  
      return false;
    }
  
    return _hasBinary(data);
  }
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"isarray":24}],22:[function(_dereq_,module,exports){
  
  /**
   * Module exports.
   *
   * Logic borrowed from Modernizr:
   *
   *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js
   */
  
  try {
    module.exports = typeof XMLHttpRequest !== 'undefined' &&
      'withCredentials' in new XMLHttpRequest();
  } catch (err) {
    // if XMLHttp support is disabled in IE then it will throw
    // when trying to create
    module.exports = false;
  }
  
  },{}],23:[function(_dereq_,module,exports){
  
  var indexOf = [].indexOf;
  
  module.exports = function(arr, obj){
    if (indexOf) return arr.indexOf(obj);
    for (var i = 0; i < arr.length; ++i) {
      if (arr[i] === obj) return i;
    }
    return -1;
  };
  },{}],24:[function(_dereq_,module,exports){
  module.exports = Array.isArray || function (arr) {
    return Object.prototype.toString.call(arr) == '[object Array]';
  };
  
  },{}],25:[function(_dereq_,module,exports){
  /**
   * Helpers.
   */
  
  var s = 1000;
  var m = s * 60;
  var h = m * 60;
  var d = h * 24;
  var y = d * 365.25;
  
  /**
   * Parse or format the given `val`.
   *
   * Options:
   *
   *  - `long` verbose formatting [false]
   *
   * @param {String|Number} val
   * @param {Object} options
   * @return {String|Number}
   * @api public
   */
  
  module.exports = function(val, options){
    options = options || {};
    if ('string' == typeof val) return parse(val);
    return options.long
      ? long(val)
      : short(val);
  };
  
  /**
   * Parse the given `str` and return milliseconds.
   *
   * @param {String} str
   * @return {Number}
   * @api private
   */
  
  function parse(str) {
    str = '' + str;
    if (str.length > 10000) return;
    var match = /^((?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str);
    if (!match) return;
    var n = parseFloat(match[1]);
    var type = (match[2] || 'ms').toLowerCase();
    switch (type) {
      case 'years':
      case 'year':
      case 'yrs':
      case 'yr':
      case 'y':
        return n * y;
      case 'days':
      case 'day':
      case 'd':
        return n * d;
      case 'hours':
      case 'hour':
      case 'hrs':
      case 'hr':
      case 'h':
        return n * h;
      case 'minutes':
      case 'minute':
      case 'mins':
      case 'min':
      case 'm':
        return n * m;
      case 'seconds':
      case 'second':
      case 'secs':
      case 'sec':
      case 's':
        return n * s;
      case 'milliseconds':
      case 'millisecond':
      case 'msecs':
      case 'msec':
      case 'ms':
        return n;
    }
  }
  
  /**
   * Short format for `ms`.
   *
   * @param {Number} ms
   * @return {String}
   * @api private
   */
  
  function short(ms) {
    if (ms >= d) return Math.round(ms / d) + 'd';
    if (ms >= h) return Math.round(ms / h) + 'h';
    if (ms >= m) return Math.round(ms / m) + 'm';
    if (ms >= s) return Math.round(ms / s) + 's';
    return ms + 'ms';
  }
  
  /**
   * Long format for `ms`.
   *
   * @param {Number} ms
   * @return {String}
   * @api private
   */
  
  function long(ms) {
    return plural(ms, d, 'day')
      || plural(ms, h, 'hour')
      || plural(ms, m, 'minute')
      || plural(ms, s, 'second')
      || ms + ' ms';
  }
  
  /**
   * Pluralization helper.
   */
  
  function plural(ms, n, name) {
    if (ms < n) return;
    if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;
    return Math.ceil(ms / n) + ' ' + name + 's';
  }
  
  },{}],26:[function(_dereq_,module,exports){
  (function (global){
  /**
   * JSON parse.
   *
   * @see Based on jQuery#parseJSON (MIT) and JSON2
   * @api private
   */
  
  var rvalidchars = /^[\],:{}\s]*$/;
  var rvalidescape = /\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g;
  var rvalidtokens = /"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g;
  var rvalidbraces = /(?:^|:|,)(?:\s*\[)+/g;
  var rtrimLeft = /^\s+/;
  var rtrimRight = /\s+$/;
  
  module.exports = function parsejson(data) {
    if ('string' != typeof data || !data) {
      return null;
    }
  
    data = data.replace(rtrimLeft, '').replace(rtrimRight, '');
  
    // Attempt to parse using the native JSON parser first
    if (global.JSON && JSON.parse) {
      return JSON.parse(data);
    }
  
    if (rvalidchars.test(data.replace(rvalidescape, '@')
        .replace(rvalidtokens, ']')
        .replace(rvalidbraces, ''))) {
      return (new Function('return ' + data))();
    }
  };
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{}],27:[function(_dereq_,module,exports){
  /**
   * Compiles a querystring
   * Returns string representation of the object
   *
   * @param {Object}
   * @api private
   */
  
  exports.encode = function (obj) {
    var str = '';
  
    for (var i in obj) {
      if (obj.hasOwnProperty(i)) {
        if (str.length) str += '&';
        str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
      }
    }
  
    return str;
  };
  
  /**
   * Parses a simple querystring into an object
   *
   * @param {String} qs
   * @api private
   */
  
  exports.decode = function(qs){
    var qry = {};
    var pairs = qs.split('&');
    for (var i = 0, l = pairs.length; i < l; i++) {
      var pair = pairs[i].split('=');
      qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
    }
    return qry;
  };
  
  },{}],28:[function(_dereq_,module,exports){
  /**
   * Parses an URI
   *
   * @author Steven Levithan <stevenlevithan.com> (MIT license)
   * @api private
   */
  
  var re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
  
  var parts = [
      'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'
  ];
  
  module.exports = function parseuri(str) {
      var src = str,
          b = str.indexOf('['),
          e = str.indexOf(']');
  
      if (b != -1 && e != -1) {
          str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);
      }
  
      var m = re.exec(str || ''),
          uri = {},
          i = 14;
  
      while (i--) {
          uri[parts[i]] = m[i] || '';
      }
  
      if (b != -1 && e != -1) {
          uri.source = src;
          uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');
          uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');
          uri.ipv6uri = true;
      }
  
      return uri;
  };
  
  },{}],29:[function(_dereq_,module,exports){
  (function (global){
  /*! https://mths.be/utf8js v2.0.0 by @mathias */
  ;(function(root) {
  
  	// Detect free variables `exports`
  	var freeExports = typeof exports == 'object' && exports;
  
  	// Detect free variable `module`
  	var freeModule = typeof module == 'object' && module &&
  		module.exports == freeExports && module;
  
  	// Detect free variable `global`, from Node.js or Browserified code,
  	// and use it as `root`
  	var freeGlobal = typeof global == 'object' && global;
  	if (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {
  		root = freeGlobal;
  	}
  
  	/*--------------------------------------------------------------------------*/
  
  	var stringFromCharCode = String.fromCharCode;
  
  	// Taken from https://mths.be/punycode
  	function ucs2decode(string) {
  		var output = [];
  		var counter = 0;
  		var length = string.length;
  		var value;
  		var extra;
  		while (counter < length) {
  			value = string.charCodeAt(counter++);
  			if (value >= 0xD800 && value <= 0xDBFF && counter < length) {
  				// high surrogate, and there is a next character
  				extra = string.charCodeAt(counter++);
  				if ((extra & 0xFC00) == 0xDC00) { // low surrogate
  					output.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);
  				} else {
  					// unmatched surrogate; only append this code unit, in case the next
  					// code unit is the high surrogate of a surrogate pair
  					output.push(value);
  					counter--;
  				}
  			} else {
  				output.push(value);
  			}
  		}
  		return output;
  	}
  
  	// Taken from https://mths.be/punycode
  	function ucs2encode(array) {
  		var length = array.length;
  		var index = -1;
  		var value;
  		var output = '';
  		while (++index < length) {
  			value = array[index];
  			if (value > 0xFFFF) {
  				value -= 0x10000;
  				output += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);
  				value = 0xDC00 | value & 0x3FF;
  			}
  			output += stringFromCharCode(value);
  		}
  		return output;
  	}
  
  	function checkScalarValue(codePoint) {
  		if (codePoint >= 0xD800 && codePoint <= 0xDFFF) {
  			throw Error(
  				'Lone surrogate U+' + codePoint.toString(16).toUpperCase() +
  				' is not a scalar value'
  			);
  		}
  	}
  	/*--------------------------------------------------------------------------*/
  
  	function createByte(codePoint, shift) {
  		return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);
  	}
  
  	function encodeCodePoint(codePoint) {
  		if ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence
  			return stringFromCharCode(codePoint);
  		}
  		var symbol = '';
  		if ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence
  			symbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);
  		}
  		else if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence
  			checkScalarValue(codePoint);
  			symbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);
  			symbol += createByte(codePoint, 6);
  		}
  		else if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence
  			symbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);
  			symbol += createByte(codePoint, 12);
  			symbol += createByte(codePoint, 6);
  		}
  		symbol += stringFromCharCode((codePoint & 0x3F) | 0x80);
  		return symbol;
  	}
  
  	function utf8encode(string) {
  		var codePoints = ucs2decode(string);
  		var length = codePoints.length;
  		var index = -1;
  		var codePoint;
  		var byteString = '';
  		while (++index < length) {
  			codePoint = codePoints[index];
  			byteString += encodeCodePoint(codePoint);
  		}
  		return byteString;
  	}
  
  	/*--------------------------------------------------------------------------*/
  
  	function readContinuationByte() {
  		if (byteIndex >= byteCount) {
  			throw Error('Invalid byte index');
  		}
  
  		var continuationByte = byteArray[byteIndex] & 0xFF;
  		byteIndex++;
  
  		if ((continuationByte & 0xC0) == 0x80) {
  			return continuationByte & 0x3F;
  		}
  
  		// If we end up here, it’s not a continuation byte
  		throw Error('Invalid continuation byte');
  	}
  
  	function decodeSymbol() {
  		var byte1;
  		var byte2;
  		var byte3;
  		var byte4;
  		var codePoint;
  
  		if (byteIndex > byteCount) {
  			throw Error('Invalid byte index');
  		}
  
  		if (byteIndex == byteCount) {
  			return false;
  		}
  
  		// Read first byte
  		byte1 = byteArray[byteIndex] & 0xFF;
  		byteIndex++;
  
  		// 1-byte sequence (no continuation bytes)
  		if ((byte1 & 0x80) == 0) {
  			return byte1;
  		}
  
  		// 2-byte sequence
  		if ((byte1 & 0xE0) == 0xC0) {
  			var byte2 = readContinuationByte();
  			codePoint = ((byte1 & 0x1F) << 6) | byte2;
  			if (codePoint >= 0x80) {
  				return codePoint;
  			} else {
  				throw Error('Invalid continuation byte');
  			}
  		}
  
  		// 3-byte sequence (may include unpaired surrogates)
  		if ((byte1 & 0xF0) == 0xE0) {
  			byte2 = readContinuationByte();
  			byte3 = readContinuationByte();
  			codePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;
  			if (codePoint >= 0x0800) {
  				checkScalarValue(codePoint);
  				return codePoint;
  			} else {
  				throw Error('Invalid continuation byte');
  			}
  		}
  
  		// 4-byte sequence
  		if ((byte1 & 0xF8) == 0xF0) {
  			byte2 = readContinuationByte();
  			byte3 = readContinuationByte();
  			byte4 = readContinuationByte();
  			codePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |
  				(byte3 << 0x06) | byte4;
  			if (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {
  				return codePoint;
  			}
  		}
  
  		throw Error('Invalid UTF-8 detected');
  	}
  
  	var byteArray;
  	var byteCount;
  	var byteIndex;
  	function utf8decode(byteString) {
  		byteArray = ucs2decode(byteString);
  		byteCount = byteArray.length;
  		byteIndex = 0;
  		var codePoints = [];
  		var tmp;
  		while ((tmp = decodeSymbol()) !== false) {
  			codePoints.push(tmp);
  		}
  		return ucs2encode(codePoints);
  	}
  
  	/*--------------------------------------------------------------------------*/
  
  	var utf8 = {
  		'version': '2.0.0',
  		'encode': utf8encode,
  		'decode': utf8decode
  	};
  
  	// Some AMD build optimizers, like r.js, check for specific condition patterns
  	// like the following:
  	if (
  		typeof define == 'function' &&
  		typeof define.amd == 'object' &&
  		define.amd
  	) {
  		define(function() {
  			return utf8;
  		});
  	}	else if (freeExports && !freeExports.nodeType) {
  		if (freeModule) { // in Node.js or RingoJS v0.8.0+
  			freeModule.exports = utf8;
  		} else { // in Narwhal or RingoJS v0.7.0-
  			var object = {};
  			var hasOwnProperty = object.hasOwnProperty;
  			for (var key in utf8) {
  				hasOwnProperty.call(utf8, key) && (freeExports[key] = utf8[key]);
  			}
  		}
  	} else { // in Rhino or a web browser
  		root.utf8 = utf8;
  	}
  
  }(this));
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{}],30:[function(_dereq_,module,exports){
  'use strict';
  
  var alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')
    , length = 64
    , map = {}
    , seed = 0
    , i = 0
    , prev;
  
  /**
   * Return a string representing the specified number.
   *
   * @param {Number} num The number to convert.
   * @returns {String} The string representation of the number.
   * @api public
   */
  function encode(num) {
    var encoded = '';
  
    do {
      encoded = alphabet[num % length] + encoded;
      num = Math.floor(num / length);
    } while (num > 0);
  
    return encoded;
  }
  
  /**
   * Return the integer value specified by the given string.
   *
   * @param {String} str The string to convert.
   * @returns {Number} The integer value represented by the string.
   * @api public
   */
  function decode(str) {
    var decoded = 0;
  
    for (i = 0; i < str.length; i++) {
      decoded = decoded * length + map[str.charAt(i)];
    }
  
    return decoded;
  }
  
  /**
   * Yeast: A tiny growing id generator.
   *
   * @returns {String} A unique id.
   * @api public
   */
  function yeast() {
    var now = encode(+new Date());
  
    if (now !== prev) return seed = 0, prev = now;
    return now +'.'+ encode(seed++);
  }
  
  //
  // Map each character to its index.
  //
  for (; i < length; i++) map[alphabet[i]] = i;
  
  //
  // Expose the `yeast`, `encode` and `decode` functions.
  //
  yeast.encode = encode;
  yeast.decode = decode;
  module.exports = yeast;
  
  },{}],31:[function(_dereq_,module,exports){
  
  /**
   * Module dependencies.
   */
  
  var url = _dereq_('./url');
  var parser = _dereq_('socket.io-parser');
  var Manager = _dereq_('./manager');
  var debug = _dereq_('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];
    }
  
    return io.socket(parsed.path);
  }
  
  /**
   * 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 = _dereq_('./manager');
  exports.Socket = _dereq_('./socket');
  
  },{"./manager":32,"./socket":34,"./url":35,"debug":39,"socket.io-parser":47}],32:[function(_dereq_,module,exports){
  
  /**
   * Module dependencies.
   */
  
  var eio = _dereq_('engine.io-client');
  var Socket = _dereq_('./socket');
  var Emitter = _dereq_('component-emitter');
  var parser = _dereq_('socket.io-parser');
  var on = _dereq_('./on');
  var bind = _dereq_('component-bind');
  var debug = _dereq_('debug')('socket.io-client:manager');
  var indexOf = _dereq_('indexof');
  var Backoff = _dereq_('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 = [];
    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.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){
    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){
    var socket = this.nsps[nsp];
    if (!socket) {
      socket = new Socket(this, nsp);
      this.nsps[nsp] = socket;
      var self = this;
      socket.on('connecting', onConnecting);
      socket.on('connect', function(){
        socket.id = self.engine.id;
      });
  
      if (this.autoConnect) {
        // manually call here since connecting evnet 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 (!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 sub;
    while (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);
  };
  
  },{"./on":33,"./socket":34,"backo2":36,"component-bind":37,"component-emitter":38,"debug":39,"engine.io-client":1,"indexof":42,"socket.io-parser":47}],33:[function(_dereq_,module,exports){
  
  /**
   * 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);
      }
    };
  }
  
  },{}],34:[function(_dereq_,module,exports){
  
  /**
   * Module dependencies.
   */
  
  var parser = _dereq_('socket.io-parser');
  var Emitter = _dereq_('component-emitter');
  var toArray = _dereq_('to-array');
  var on = _dereq_('./on');
  var bind = _dereq_('component-bind');
  var debug = _dereq_('debug')('socket.io-client:socket');
  var hasBin = _dereq_('has-binary');
  
  /**
   * 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){
    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;
    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 parserType = parser.EVENT; // default
    if (hasBin(args)) { parserType = parser.BINARY_EVENT; } // binary
    var packet = { type: parserType, 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);
    }
  
    delete 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) {
      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){
    if (packet.nsp != this.nsp) 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);
  
      var type = hasBin(args) ? parser.BINARY_ACK : parser.ACK;
      self.packet({
        type: type,
        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 = this.flags || {};
    this.flags.compress = compress;
    return this;
  };
  
  },{"./on":33,"component-bind":37,"component-emitter":38,"debug":39,"has-binary":41,"socket.io-parser":47,"to-array":51}],35:[function(_dereq_,module,exports){
  (function (global){
  
  /**
   * Module dependencies.
   */
  
  var parseuri = _dereq_('parseuri');
  var debug = _dereq_('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
    var 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;
  }
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"debug":39,"parseuri":45}],36:[function(_dereq_,module,exports){
  
  /**
   * Expose `Backoff`.
   */
  
  module.exports = Backoff;
  
  /**
   * Initialize backoff timer with `opts`.
   *
   * - `min` initial timeout in milliseconds [100]
   * - `max` max timeout [10000]
   * - `jitter` [0]
   * - `factor` [2]
   *
   * @param {Object} opts
   * @api public
   */
  
  function Backoff(opts) {
    opts = opts || {};
    this.ms = opts.min || 100;
    this.max = opts.max || 10000;
    this.factor = opts.factor || 2;
    this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;
    this.attempts = 0;
  }
  
  /**
   * Return the backoff duration.
   *
   * @return {Number}
   * @api public
   */
  
  Backoff.prototype.duration = function(){
    var ms = this.ms * Math.pow(this.factor, this.attempts++);
    if (this.jitter) {
      var rand =  Math.random();
      var deviation = Math.floor(rand * this.jitter * ms);
      ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;
    }
    return Math.min(ms, this.max) | 0;
  };
  
  /**
   * Reset the number of attempts.
   *
   * @api public
   */
  
  Backoff.prototype.reset = function(){
    this.attempts = 0;
  };
  
  /**
   * Set the minimum duration
   *
   * @api public
   */
  
  Backoff.prototype.setMin = function(min){
    this.ms = min;
  };
  
  /**
   * Set the maximum duration
   *
   * @api public
   */
  
  Backoff.prototype.setMax = function(max){
    this.max = max;
  };
  
  /**
   * Set the jitter
   *
   * @api public
   */
  
  Backoff.prototype.setJitter = function(jitter){
    this.jitter = jitter;
  };
  
  
  },{}],37:[function(_dereq_,module,exports){
  /**
   * Slice reference.
   */
  
  var slice = [].slice;
  
  /**
   * Bind `obj` to `fn`.
   *
   * @param {Object} obj
   * @param {Function|String} fn or string
   * @return {Function}
   * @api public
   */
  
  module.exports = function(obj, fn){
    if ('string' == typeof fn) fn = obj[fn];
    if ('function' != typeof fn) throw new Error('bind() requires a function');
    var args = slice.call(arguments, 2);
    return function(){
      return fn.apply(obj, args.concat(slice.call(arguments)));
    }
  };
  
  },{}],38:[function(_dereq_,module,exports){
  
  /**
   * Expose `Emitter`.
   */
  
  module.exports = Emitter;
  
  /**
   * Initialize a new `Emitter`.
   *
   * @api public
   */
  
  function Emitter(obj) {
    if (obj) return mixin(obj);
  };
  
  /**
   * Mixin the emitter properties.
   *
   * @param {Object} obj
   * @return {Object}
   * @api private
   */
  
  function mixin(obj) {
    for (var key in Emitter.prototype) {
      obj[key] = Emitter.prototype[key];
    }
    return obj;
  }
  
  /**
   * Listen on the given `event` with `fn`.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */
  
  Emitter.prototype.on =
  Emitter.prototype.addEventListener = function(event, fn){
    this._callbacks = this._callbacks || {};
    (this._callbacks['$' + event] = this._callbacks['$' + event] || [])
      .push(fn);
    return this;
  };
  
  /**
   * Adds an `event` listener that will be invoked a single
   * time then automatically removed.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */
  
  Emitter.prototype.once = function(event, fn){
    function on() {
      this.off(event, on);
      fn.apply(this, arguments);
    }
  
    on.fn = fn;
    this.on(event, on);
    return this;
  };
  
  /**
   * Remove the given callback for `event` or all
   * registered callbacks.
   *
   * @param {String} event
   * @param {Function} fn
   * @return {Emitter}
   * @api public
   */
  
  Emitter.prototype.off =
  Emitter.prototype.removeListener =
  Emitter.prototype.removeAllListeners =
  Emitter.prototype.removeEventListener = function(event, fn){
    this._callbacks = this._callbacks || {};
  
    // all
    if (0 == arguments.length) {
      this._callbacks = {};
      return this;
    }
  
    // specific event
    var callbacks = this._callbacks['$' + event];
    if (!callbacks) return this;
  
    // remove all handlers
    if (1 == arguments.length) {
      delete this._callbacks['$' + event];
      return this;
    }
  
    // remove specific handler
    var cb;
    for (var i = 0; i < callbacks.length; i++) {
      cb = callbacks[i];
      if (cb === fn || cb.fn === fn) {
        callbacks.splice(i, 1);
        break;
      }
    }
    return this;
  };
  
  /**
   * Emit `event` with the given args.
   *
   * @param {String} event
   * @param {Mixed} ...
   * @return {Emitter}
   */
  
  Emitter.prototype.emit = function(event){
    this._callbacks = this._callbacks || {};
    var args = [].slice.call(arguments, 1)
      , callbacks = this._callbacks['$' + event];
  
    if (callbacks) {
      callbacks = callbacks.slice(0);
      for (var i = 0, len = callbacks.length; i < len; ++i) {
        callbacks[i].apply(this, args);
      }
    }
  
    return this;
  };
  
  /**
   * Return array of callbacks for `event`.
   *
   * @param {String} event
   * @return {Array}
   * @api public
   */
  
  Emitter.prototype.listeners = function(event){
    this._callbacks = this._callbacks || {};
    return this._callbacks['$' + event] || [];
  };
  
  /**
   * Check if this emitter has `event` handlers.
   *
   * @param {String} event
   * @return {Boolean}
   * @api public
   */
  
  Emitter.prototype.hasListeners = function(event){
    return !! this.listeners(event).length;
  };
  
  },{}],39:[function(_dereq_,module,exports){
  arguments[4][17][0].apply(exports,arguments)
  },{"./debug":40,"dup":17}],40:[function(_dereq_,module,exports){
  arguments[4][18][0].apply(exports,arguments)
  },{"dup":18,"ms":44}],41:[function(_dereq_,module,exports){
  (function (global){
  
  /*
   * Module requirements.
   */
  
  var isArray = _dereq_('isarray');
  
  /**
   * Module exports.
   */
  
  module.exports = hasBinary;
  
  /**
   * Checks for binary data.
   *
   * Right now only Buffer and ArrayBuffer are supported..
   *
   * @param {Object} anything
   * @api public
   */
  
  function hasBinary(data) {
  
    function _hasBinary(obj) {
      if (!obj) return false;
  
      if ( (global.Buffer && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||
           (global.ArrayBuffer && obj instanceof ArrayBuffer) ||
           (global.Blob && obj instanceof Blob) ||
           (global.File && obj instanceof File)
          ) {
        return true;
      }
  
      if (isArray(obj)) {
        for (var i = 0; i < obj.length; i++) {
            if (_hasBinary(obj[i])) {
                return true;
            }
        }
      } else if (obj && 'object' == typeof obj) {
        // see: https://github.com/Automattic/has-binary/pull/4
        if (obj.toJSON && 'function' == typeof obj.toJSON) {
          obj = obj.toJSON();
        }
  
        for (var key in obj) {
          if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {
            return true;
          }
        }
      }
  
      return false;
    }
  
    return _hasBinary(data);
  }
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"isarray":43}],42:[function(_dereq_,module,exports){
  arguments[4][23][0].apply(exports,arguments)
  },{"dup":23}],43:[function(_dereq_,module,exports){
  arguments[4][24][0].apply(exports,arguments)
  },{"dup":24}],44:[function(_dereq_,module,exports){
  arguments[4][25][0].apply(exports,arguments)
  },{"dup":25}],45:[function(_dereq_,module,exports){
  arguments[4][28][0].apply(exports,arguments)
  },{"dup":28}],46:[function(_dereq_,module,exports){
  (function (global){
  /*global Blob,File*/
  
  /**
   * Module requirements
   */
  
  var isArray = _dereq_('isarray');
  var isBuf = _dereq_('./is-buffer');
  
  /**
   * 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;
  
    function _deconstructPacket(data) {
      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]);
        }
        return newData;
      } else if ('object' == typeof data && !(data instanceof Date)) {
        var newData = {};
        for (var key in data) {
          newData[key] = _deconstructPacket(data[key]);
        }
        return newData;
      }
      return data;
    }
  
    var pack = packet;
    pack.data = _deconstructPacket(packetData);
    pack.attachments = buffers.length; // number of binary 'attachments'
    return {packet: pack, buffers: buffers};
  };
  
  /**
   * 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) {
    var curPlaceHolder = 0;
  
    function _reconstructPacket(data) {
      if (data && data._placeholder) {
        var buf = buffers[data.num]; // appropriate buffer (should be natural order anyway)
        return buf;
      } else if (isArray(data)) {
        for (var i = 0; i < data.length; i++) {
          data[i] = _reconstructPacket(data[i]);
        }
        return data;
      } else if (data && 'object' == typeof data) {
        for (var key in data) {
          data[key] = _reconstructPacket(data[key]);
        }
        return data;
      }
      return data;
    }
  
    packet.data = _reconstructPacket(packet.data);
    packet.attachments = undefined; // no longer useful
    return packet;
  };
  
  /**
   * 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 ((global.Blob && obj instanceof Blob) ||
          (global.File && 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 (obj && 'object' == typeof obj && !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);
    }
  };
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{"./is-buffer":48,"isarray":43}],47:[function(_dereq_,module,exports){
  
  /**
   * Module dependencies.
   */
  
  var debug = _dereq_('debug')('socket.io-parser');
  var json = _dereq_('json3');
  var isArray = _dereq_('isarray');
  var Emitter = _dereq_('component-emitter');
  var binary = _dereq_('./binary');
  var isBuf = _dereq_('./is-buffer');
  
  /**
   * Protocol version.
   *
   * @api public
   */
  
  exports.protocol = 4;
  
  /**
   * Packet types.
   *
   * @api public
   */
  
  exports.types = [
    'CONNECT',
    'DISCONNECT',
    'EVENT',
    'BINARY_EVENT',
    'ACK',
    'BINARY_ACK',
    'ERROR'
  ];
  
  /**
   * 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() {}
  
  /**
   * 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) {
    var str = '';
    var nsp = false;
  
    // first is type
    str += obj.type;
  
    // attachments if we have them
    if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {
      str += obj.attachments;
      str += '-';
    }
  
    // if we have a namespace other than `/`
    // we append it followed by a comma `,`
    if (obj.nsp && '/' != obj.nsp) {
      nsp = true;
      str += obj.nsp;
    }
  
    // immediately followed by the id
    if (null != obj.id) {
      if (nsp) {
        str += ',';
        nsp = false;
      }
      str += obj.id;
    }
  
    // json data
    if (null != obj.data) {
      if (nsp) str += ',';
      str += json.stringify(obj.data);
    }
  
    debug('encoded %j as %s', obj, str);
    return str;
  }
  
  /**
   * 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 ('string' == typeof obj) {
      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 p = {};
    var i = 0;
  
    // look up type
    p.type = Number(str.charAt(0));
    if (null == exports.types[p.type]) return error();
  
    // 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)) {
      try {
        p.data = json.parse(str.substr(i));
      } catch(e){
        return error();
      }
    }
  
    debug('decoded %s as %j', str, p);
    return p;
  }
  
  /**
   * 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(data){
    return {
      type: exports.ERROR,
      data: 'parser error'
    };
  }
  
  },{"./binary":46,"./is-buffer":48,"component-emitter":49,"debug":39,"isarray":43,"json3":50}],48:[function(_dereq_,module,exports){
  (function (global){
  
  module.exports = isBuf;
  
  /**
   * Returns true if obj is a buffer or an arraybuffer.
   *
   * @api private
   */
  
  function isBuf(obj) {
    return (global.Buffer && global.Buffer.isBuffer(obj)) ||
           (global.ArrayBuffer && obj instanceof ArrayBuffer);
  }
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{}],49:[function(_dereq_,module,exports){
  arguments[4][15][0].apply(exports,arguments)
  },{"dup":15}],50:[function(_dereq_,module,exports){
  (function (global){
  /*! JSON v3.3.2 | http://bestiejs.github.io/json3 | Copyright 2012-2014, Kit Cambridge | http://kit.mit-license.org */
  ;(function () {
    // Detect the `define` function exposed by asynchronous module loaders. The
    // strict `define` check is necessary for compatibility with `r.js`.
    var isLoader = typeof define === "function" && define.amd;
  
    // A set of types used to distinguish objects from primitives.
    var objectTypes = {
      "function": true,
      "object": true
    };
  
    // Detect the `exports` object exposed by CommonJS implementations.
    var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;
  
    // Use the `global` object exposed by Node (including Browserify via
    // `insert-module-globals`), Narwhal, and Ringo as the default context,
    // and the `window` object in browsers. Rhino exports a `global` function
    // instead.
    var root = objectTypes[typeof window] && window || this,
        freeGlobal = freeExports && objectTypes[typeof module] && module && !module.nodeType && typeof global == "object" && global;
  
    if (freeGlobal && (freeGlobal["global"] === freeGlobal || freeGlobal["window"] === freeGlobal || freeGlobal["self"] === freeGlobal)) {
      root = freeGlobal;
    }
  
    // Public: Initializes JSON 3 using the given `context` object, attaching the
    // `stringify` and `parse` functions to the specified `exports` object.
    function runInContext(context, exports) {
      context || (context = root["Object"]());
      exports || (exports = root["Object"]());
  
      // Native constructor aliases.
      var Number = context["Number"] || root["Number"],
          String = context["String"] || root["String"],
          Object = context["Object"] || root["Object"],
          Date = context["Date"] || root["Date"],
          SyntaxError = context["SyntaxError"] || root["SyntaxError"],
          TypeError = context["TypeError"] || root["TypeError"],
          Math = context["Math"] || root["Math"],
          nativeJSON = context["JSON"] || root["JSON"];
  
      // Delegate to the native `stringify` and `parse` implementations.
      if (typeof nativeJSON == "object" && nativeJSON) {
        exports.stringify = nativeJSON.stringify;
        exports.parse = nativeJSON.parse;
      }
  
      // Convenience aliases.
      var objectProto = Object.prototype,
          getClass = objectProto.toString,
          isProperty, forEach, undef;
  
      // Test the `Date#getUTC*` methods. Based on work by @Yaffle.
      var isExtended = new Date(-3509827334573292);
      try {
        // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical
        // results for certain dates in Opera >= 10.53.
        isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&
          // Safari < 2.0.2 stores the internal millisecond time value correctly,
          // but clips the values returned by the date methods to the range of
          // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).
          isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;
      } catch (exception) {}
  
      // Internal: Determines whether the native `JSON.stringify` and `parse`
      // implementations are spec-compliant. Based on work by Ken Snyder.
      function has(name) {
        if (has[name] !== undef) {
          // Return cached feature test result.
          return has[name];
        }
        var isSupported;
        if (name == "bug-string-char-index") {
          // IE <= 7 doesn't support accessing string characters using square
          // bracket notation. IE 8 only supports this for primitives.
          isSupported = "a"[0] != "a";
        } else if (name == "json") {
          // Indicates whether both `JSON.stringify` and `JSON.parse` are
          // supported.
          isSupported = has("json-stringify") && has("json-parse");
        } else {
          var value, serialized = '{"a":[1,true,false,null,"\\u0000\\b\\n\\f\\r\\t"]}';
          // Test `JSON.stringify`.
          if (name == "json-stringify") {
            var stringify = exports.stringify, stringifySupported = typeof stringify == "function" && isExtended;
            if (stringifySupported) {
              // A test function object with a custom `toJSON` method.
              (value = function () {
                return 1;
              }).toJSON = value;
              try {
                stringifySupported =
                  // Firefox 3.1b1 and b2 serialize string, number, and boolean
                  // primitives as object literals.
                  stringify(0) === "0" &&
                  // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object
                  // literals.
                  stringify(new Number()) === "0" &&
                  stringify(new String()) == '""' &&
                  // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or
                  // does not define a canonical JSON representation (this applies to
                  // objects with `toJSON` properties as well, *unless* they are nested
                  // within an object or array).
                  stringify(getClass) === undef &&
                  // IE 8 serializes `undefined` as `"undefined"`. Safari <= 5.1.7 and
                  // FF 3.1b3 pass this test.
                  stringify(undef) === undef &&
                  // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,
                  // respectively, if the value is omitted entirely.
                  stringify() === undef &&
                  // FF 3.1b1, 2 throw an error if the given value is not a number,
                  // string, array, object, Boolean, or `null` literal. This applies to
                  // objects with custom `toJSON` methods as well, unless they are nested
                  // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`
                  // methods entirely.
                  stringify(value) === "1" &&
                  stringify([value]) == "[1]" &&
                  // Prototype <= 1.6.1 serializes `[undefined]` as `"[]"` instead of
                  // `"[null]"`.
                  stringify([undef]) == "[null]" &&
                  // YUI 3.0.0b1 fails to serialize `null` literals.
                  stringify(null) == "null" &&
                  // FF 3.1b1, 2 halts serialization if an array contains a function:
                  // `[1, true, getClass, 1]` serializes as "[1,true,],". FF 3.1b3
                  // elides non-JSON values from objects and arrays, unless they
                  // define custom `toJSON` methods.
                  stringify([undef, getClass, null]) == "[null,null,null]" &&
                  // Simple serialization test. FF 3.1b1 uses Unicode escape sequences
                  // where character escape codes are expected (e.g., `\b` => `\u0008`).
                  stringify({ "a": [value, true, false, null, "\x00\b\n\f\r\t"] }) == serialized &&
                  // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.
                  stringify(null, value) === "1" &&
                  stringify([1, 2], null, 1) == "[\n 1,\n 2\n]" &&
                  // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly
                  // serialize extended years.
                  stringify(new Date(-8.64e15)) == '"-271821-04-20T00:00:00.000Z"' &&
                  // The milliseconds are optional in ES 5, but required in 5.1.
                  stringify(new Date(8.64e15)) == '"+275760-09-13T00:00:00.000Z"' &&
                  // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative
                  // four-digit years instead of six-digit years. Credits: @Yaffle.
                  stringify(new Date(-621987552e5)) == '"-000001-01-01T00:00:00.000Z"' &&
                  // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond
                  // values less than 1000. Credits: @Yaffle.
                  stringify(new Date(-1)) == '"1969-12-31T23:59:59.999Z"';
              } catch (exception) {
                stringifySupported = false;
              }
            }
            isSupported = stringifySupported;
          }
          // Test `JSON.parse`.
          if (name == "json-parse") {
            var parse = exports.parse;
            if (typeof parse == "function") {
              try {
                // FF 3.1b1, b2 will throw an exception if a bare literal is provided.
                // Conforming implementations should also coerce the initial argument to
                // a string prior to parsing.
                if (parse("0") === 0 && !parse(false)) {
                  // Simple parsing test.
                  value = parse(serialized);
                  var parseSupported = value["a"].length == 5 && value["a"][0] === 1;
                  if (parseSupported) {
                    try {
                      // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.
                      parseSupported = !parse('"\t"');
                    } catch (exception) {}
                    if (parseSupported) {
                      try {
                        // FF 4.0 and 4.0.1 allow leading `+` signs and leading
                        // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow
                        // certain octal literals.
                        parseSupported = parse("01") !== 1;
                      } catch (exception) {}
                    }
                    if (parseSupported) {
                      try {
                        // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal
                        // points. These environments, along with FF 3.1b1 and 2,
                        // also allow trailing commas in JSON objects and arrays.
                        parseSupported = parse("1.") !== 1;
                      } catch (exception) {}
                    }
                  }
                }
              } catch (exception) {
                parseSupported = false;
              }
            }
            isSupported = parseSupported;
          }
        }
        return has[name] = !!isSupported;
      }
  
      if (!has("json")) {
        // Common `[[Class]]` name aliases.
        var functionClass = "[object Function]",
            dateClass = "[object Date]",
            numberClass = "[object Number]",
            stringClass = "[object String]",
            arrayClass = "[object Array]",
            booleanClass = "[object Boolean]";
  
        // Detect incomplete support for accessing string characters by index.
        var charIndexBuggy = has("bug-string-char-index");
  
        // Define additional utility methods if the `Date` methods are buggy.
        if (!isExtended) {
          var floor = Math.floor;
          // A mapping between the months of the year and the number of days between
          // January 1st and the first of the respective month.
          var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];
          // Internal: Calculates the number of days between the Unix epoch and the
          // first day of the given month.
          var getDay = function (year, month) {
            return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);
          };
        }
  
        // Internal: Determines if a property is a direct property of the given
        // object. Delegates to the native `Object#hasOwnProperty` method.
        if (!(isProperty = objectProto.hasOwnProperty)) {
          isProperty = function (property) {
            var members = {}, constructor;
            if ((members.__proto__ = null, members.__proto__ = {
              // The *proto* property cannot be set multiple times in recent
              // versions of Firefox and SeaMonkey.
              "toString": 1
            }, members).toString != getClass) {
              // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but
              // supports the mutable *proto* property.
              isProperty = function (property) {
                // Capture and break the object's prototype chain (see section 8.6.2
                // of the ES 5.1 spec). The parenthesized expression prevents an
                // unsafe transformation by the Closure Compiler.
                var original = this.__proto__, result = property in (this.__proto__ = null, this);
                // Restore the original prototype chain.
                this.__proto__ = original;
                return result;
              };
            } else {
              // Capture a reference to the top-level `Object` constructor.
              constructor = members.constructor;
              // Use the `constructor` property to simulate `Object#hasOwnProperty` in
              // other environments.
              isProperty = function (property) {
                var parent = (this.constructor || constructor).prototype;
                return property in this && !(property in parent && this[property] === parent[property]);
              };
            }
            members = null;
            return isProperty.call(this, property);
          };
        }
  
        // Internal: Normalizes the `for...in` iteration algorithm across
        // environments. Each enumerated key is yielded to a `callback` function.
        forEach = function (object, callback) {
          var size = 0, Properties, members, property;
  
          // Tests for bugs in the current environment's `for...in` algorithm. The
          // `valueOf` property inherits the non-enumerable flag from
          // `Object.prototype` in older versions of IE, Netscape, and Mozilla.
          (Properties = function () {
            this.valueOf = 0;
          }).prototype.valueOf = 0;
  
          // Iterate over a new instance of the `Properties` class.
          members = new Properties();
          for (property in members) {
            // Ignore all properties inherited from `Object.prototype`.
            if (isProperty.call(members, property)) {
              size++;
            }
          }
          Properties = members = null;
  
          // Normalize the iteration algorithm.
          if (!size) {
            // A list of non-enumerable properties inherited from `Object.prototype`.
            members = ["valueOf", "toString", "toLocaleString", "propertyIsEnumerable", "isPrototypeOf", "hasOwnProperty", "constructor"];
            // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable
            // properties.
            forEach = function (object, callback) {
              var isFunction = getClass.call(object) == functionClass, property, length;
              var hasProperty = !isFunction && typeof object.constructor != "function" && objectTypes[typeof object.hasOwnProperty] && object.hasOwnProperty || isProperty;
              for (property in object) {
                // Gecko <= 1.0 enumerates the `prototype` property of functions under
                // certain conditions; IE does not.
                if (!(isFunction && property == "prototype") && hasProperty.call(object, property)) {
                  callback(property);
                }
              }
              // Manually invoke the callback for each non-enumerable property.
              for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property));
            };
          } else if (size == 2) {
            // Safari <= 2.0.4 enumerates shadowed properties twice.
            forEach = function (object, callback) {
              // Create a set of iterated properties.
              var members = {}, isFunction = getClass.call(object) == functionClass, property;
              for (property in object) {
                // Store each property name to prevent double enumeration. The
                // `prototype` property of functions is not enumerated due to cross-
                // environment inconsistencies.
                if (!(isFunction && property == "prototype") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {
                  callback(property);
                }
              }
            };
          } else {
            // No bugs detected; use the standard `for...in` algorithm.
            forEach = function (object, callback) {
              var isFunction = getClass.call(object) == functionClass, property, isConstructor;
              for (property in object) {
                if (!(isFunction && property == "prototype") && isProperty.call(object, property) && !(isConstructor = property === "constructor")) {
                  callback(property);
                }
              }
              // Manually invoke the callback for the `constructor` property due to
              // cross-environment inconsistencies.
              if (isConstructor || isProperty.call(object, (property = "constructor"))) {
                callback(property);
              }
            };
          }
          return forEach(object, callback);
        };
  
        // Public: Serializes a JavaScript `value` as a JSON string. The optional
        // `filter` argument may specify either a function that alters how object and
        // array members are serialized, or an array of strings and numbers that
        // indicates which properties should be serialized. The optional `width`
        // argument may be either a string or number that specifies the indentation
        // level of the output.
        if (!has("json-stringify")) {
          // Internal: A map of control characters and their escaped equivalents.
          var Escapes = {
            92: "\\\\",
            34: '\\"',
            8: "\\b",
            12: "\\f",
            10: "\\n",
            13: "\\r",
            9: "\\t"
          };
  
          // Internal: Converts `value` into a zero-padded string such that its
          // length is at least equal to `width`. The `width` must be <= 6.
          var leadingZeroes = "000000";
          var toPaddedString = function (width, value) {
            // The `|| 0` expression is necessary to work around a bug in
            // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== "0"`.
            return (leadingZeroes + (value || 0)).slice(-width);
          };
  
          // Internal: Double-quotes a string `value`, replacing all ASCII control
          // characters (characters with code unit values between 0 and 31) with
          // their escaped equivalents. This is an implementation of the
          // `Quote(value)` operation defined in ES 5.1 section 15.12.3.
          var unicodePrefix = "\\u00";
          var quote = function (value) {
            var result = '"', index = 0, length = value.length, useCharIndex = !charIndexBuggy || length > 10;
            var symbols = useCharIndex && (charIndexBuggy ? value.split("") : value);
            for (; index < length; index++) {
              var charCode = value.charCodeAt(index);
              // If the character is a control character, append its Unicode or
              // shorthand escape sequence; otherwise, append the character as-is.
              switch (charCode) {
                case 8: case 9: case 10: case 12: case 13: case 34: case 92:
                  result += Escapes[charCode];
                  break;
                default:
                  if (charCode < 32) {
                    result += unicodePrefix + toPaddedString(2, charCode.toString(16));
                    break;
                  }
                  result += useCharIndex ? symbols[index] : value.charAt(index);
              }
            }
            return result + '"';
          };
  
          // Internal: Recursively serializes an object. Implements the
          // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.
          var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {
            var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element, index, length, prefix, result;
            try {
              // Necessary for host object support.
              value = object[property];
            } catch (exception) {}
            if (typeof value == "object" && value) {
              className = getClass.call(value);
              if (className == dateClass && !isProperty.call(value, "toJSON")) {
                if (value > -1 / 0 && value < 1 / 0) {
                  // Dates are serialized according to the `Date#toJSON` method
                  // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15
                  // for the ISO 8601 date time string format.
                  if (getDay) {
                    // Manually compute the year, month, date, hours, minutes,
                    // seconds, and milliseconds if the `getUTC*` methods are
                    // buggy. Adapted from @Yaffle's `date-shim` project.
                    date = floor(value / 864e5);
                    for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);
                    for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);
                    date = 1 + date - getDay(year, month);
                    // The `time` value specifies the time within the day (see ES
                    // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used
                    // to compute `A modulo B`, as the `%` operator does not
                    // correspond to the `modulo` operation for negative numbers.
                    time = (value % 864e5 + 864e5) % 864e5;
                    // The hours, minutes, seconds, and milliseconds are obtained by
                    // decomposing the time within the day. See section 15.9.1.10.
                    hours = floor(time / 36e5) % 24;
                    minutes = floor(time / 6e4) % 60;
                    seconds = floor(time / 1e3) % 60;
                    milliseconds = time % 1e3;
                  } else {
                    year = value.getUTCFullYear();
                    month = value.getUTCMonth();
                    date = value.getUTCDate();
                    hours = value.getUTCHours();
                    minutes = value.getUTCMinutes();
                    seconds = value.getUTCSeconds();
                    milliseconds = value.getUTCMilliseconds();
                  }
                  // Serialize extended years correctly.
                  value = (year <= 0 || year >= 1e4 ? (year < 0 ? "-" : "+") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +
                    "-" + toPaddedString(2, month + 1) + "-" + toPaddedString(2, date) +
                    // Months, dates, hours, minutes, and seconds should have two
                    // digits; milliseconds should have three.
                    "T" + toPaddedString(2, hours) + ":" + toPaddedString(2, minutes) + ":" + toPaddedString(2, seconds) +
                    // Milliseconds are optional in ES 5.0, but required in 5.1.
                    "." + toPaddedString(3, milliseconds) + "Z";
                } else {
                  value = null;
                }
              } else if (typeof value.toJSON == "function" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, "toJSON"))) {
                // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the
                // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3
                // ignores all `toJSON` methods on these objects unless they are
                // defined directly on an instance.
                value = value.toJSON(property);
              }
            }
            if (callback) {
              // If a replacement function was provided, call it to obtain the value
              // for serialization.
              value = callback.call(object, property, value);
            }
            if (value === null) {
              return "null";
            }
            className = getClass.call(value);
            if (className == booleanClass) {
              // Booleans are represented literally.
              return "" + value;
            } else if (className == numberClass) {
              // JSON numbers must be finite. `Infinity` and `NaN` are serialized as
              // `"null"`.
              return value > -1 / 0 && value < 1 / 0 ? "" + value : "null";
            } else if (className == stringClass) {
              // Strings are double-quoted and escaped.
              return quote("" + value);
            }
            // Recursively serialize objects and arrays.
            if (typeof value == "object") {
              // Check for cyclic structures. This is a linear search; performance
              // is inversely proportional to the number of unique nested objects.
              for (length = stack.length; length--;) {
                if (stack[length] === value) {
                  // Cyclic structures cannot be serialized by `JSON.stringify`.
                  throw TypeError();
                }
              }
              // Add the object to the stack of traversed objects.
              stack.push(value);
              results = [];
              // Save the current indentation level and indent one additional level.
              prefix = indentation;
              indentation += whitespace;
              if (className == arrayClass) {
                // Recursively serialize array elements.
                for (index = 0, length = value.length; index < length; index++) {
                  element = serialize(index, value, callback, properties, whitespace, indentation, stack);
                  results.push(element === undef ? "null" : element);
                }
                result = results.length ? (whitespace ? "[\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "]" : ("[" + results.join(",") + "]")) : "[]";
              } else {
                // Recursively serialize object members. Members are selected from
                // either a user-specified list of property names, or the object
                // itself.
                forEach(properties || value, function (property) {
                  var element = serialize(property, value, callback, properties, whitespace, indentation, stack);
                  if (element !== undef) {
                    // According to ES 5.1 section 15.12.3: "If `gap` {whitespace}
                    // is not the empty string, let `member` {quote(property) + ":"}
                    // be the concatenation of `member` and the `space` character."
                    // The "`space` character" refers to the literal space
                    // character, not the `space` {width} argument provided to
                    // `JSON.stringify`.
                    results.push(quote(property) + ":" + (whitespace ? " " : "") + element);
                  }
                });
                result = results.length ? (whitespace ? "{\n" + indentation + results.join(",\n" + indentation) + "\n" + prefix + "}" : ("{" + results.join(",") + "}")) : "{}";
              }
              // Remove the object from the traversed object stack.
              stack.pop();
              return result;
            }
          };
  
          // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.
          exports.stringify = function (source, filter, width) {
            var whitespace, callback, properties, className;
            if (objectTypes[typeof filter] && filter) {
              if ((className = getClass.call(filter)) == functionClass) {
                callback = filter;
              } else if (className == arrayClass) {
                // Convert the property names array into a makeshift set.
                properties = {};
                for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1));
              }
            }
            if (width) {
              if ((className = getClass.call(width)) == numberClass) {
                // Convert the `width` to an integer and create a string containing
                // `width` number of space characters.
                if ((width -= width % 1) > 0) {
                  for (whitespace = "", width > 10 && (width = 10); whitespace.length < width; whitespace += " ");
                }
              } else if (className == stringClass) {
                whitespace = width.length <= 10 ? width : width.slice(0, 10);
              }
            }
            // Opera <= 7.54u2 discards the values associated with empty string keys
            // (`""`) only if they are used directly within an object member list
            // (e.g., `!("" in { "": 1})`).
            return serialize("", (value = {}, value[""] = source, value), callback, properties, whitespace, "", []);
          };
        }
  
        // Public: Parses a JSON source string.
        if (!has("json-parse")) {
          var fromCharCode = String.fromCharCode;
  
          // Internal: A map of escaped control characters and their unescaped
          // equivalents.
          var Unescapes = {
            92: "\\",
            34: '"',
            47: "/",
            98: "\b",
            116: "\t",
            110: "\n",
            102: "\f",
            114: "\r"
          };
  
          // Internal: Stores the parser state.
          var Index, Source;
  
          // Internal: Resets the parser state and throws a `SyntaxError`.
          var abort = function () {
            Index = Source = null;
            throw SyntaxError();
          };
  
          // Internal: Returns the next token, or `"$"` if the parser has reached
          // the end of the source string. A token may be a string, number, `null`
          // literal, or Boolean literal.
          var lex = function () {
            var source = Source, length = source.length, value, begin, position, isSigned, charCode;
            while (Index < length) {
              charCode = source.charCodeAt(Index);
              switch (charCode) {
                case 9: case 10: case 13: case 32:
                  // Skip whitespace tokens, including tabs, carriage returns, line
                  // feeds, and space characters.
                  Index++;
                  break;
                case 123: case 125: case 91: case 93: case 58: case 44:
                  // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at
                  // the current position.
                  value = charIndexBuggy ? source.charAt(Index) : source[Index];
                  Index++;
                  return value;
                case 34:
                  // `"` delimits a JSON string; advance to the next character and
                  // begin parsing the string. String tokens are prefixed with the
                  // sentinel `@` character to distinguish them from punctuators and
                  // end-of-string tokens.
                  for (value = "@", Index++; Index < length;) {
                    charCode = source.charCodeAt(Index);
                    if (charCode < 32) {
                      // Unescaped ASCII control characters (those with a code unit
                      // less than the space character) are not permitted.
                      abort();
                    } else if (charCode == 92) {
                      // A reverse solidus (`\`) marks the beginning of an escaped
                      // control character (including `"`, `\`, and `/`) or Unicode
                      // escape sequence.
                      charCode = source.charCodeAt(++Index);
                      switch (charCode) {
                        case 92: case 34: case 47: case 98: case 116: case 110: case 102: case 114:
                          // Revive escaped control characters.
                          value += Unescapes[charCode];
                          Index++;
                          break;
                        case 117:
                          // `\u` marks the beginning of a Unicode escape sequence.
                          // Advance to the first character and validate the
                          // four-digit code point.
                          begin = ++Index;
                          for (position = Index + 4; Index < position; Index++) {
                            charCode = source.charCodeAt(Index);
                            // A valid sequence comprises four hexdigits (case-
                            // insensitive) that form a single hexadecimal value.
                            if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {
                              // Invalid Unicode escape sequence.
                              abort();
                            }
                          }
                          // Revive the escaped character.
                          value += fromCharCode("0x" + source.slice(begin, Index));
                          break;
                        default:
                          // Invalid escape sequence.
                          abort();
                      }
                    } else {
                      if (charCode == 34) {
                        // An unescaped double-quote character marks the end of the
                        // string.
                        break;
                      }
                      charCode = source.charCodeAt(Index);
                      begin = Index;
                      // Optimize for the common case where a string is valid.
                      while (charCode >= 32 && charCode != 92 && charCode != 34) {
                        charCode = source.charCodeAt(++Index);
                      }
                      // Append the string as-is.
                      value += source.slice(begin, Index);
                    }
                  }
                  if (source.charCodeAt(Index) == 34) {
                    // Advance to the next character and return the revived string.
                    Index++;
                    return value;
                  }
                  // Unterminated string.
                  abort();
                default:
                  // Parse numbers and literals.
                  begin = Index;
                  // Advance past the negative sign, if one is specified.
                  if (charCode == 45) {
                    isSigned = true;
                    charCode = source.charCodeAt(++Index);
                  }
                  // Parse an integer or floating-point value.
                  if (charCode >= 48 && charCode <= 57) {
                    // Leading zeroes are interpreted as octal literals.
                    if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {
                      // Illegal octal literal.
                      abort();
                    }
                    isSigned = false;
                    // Parse the integer component.
                    for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++);
                    // Floats cannot contain a leading decimal point; however, this
                    // case is already accounted for by the parser.
                    if (source.charCodeAt(Index) == 46) {
                      position = ++Index;
                      // Parse the decimal component.
                      for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
                      if (position == Index) {
                        // Illegal trailing decimal.
                        abort();
                      }
                      Index = position;
                    }
                    // Parse exponents. The `e` denoting the exponent is
                    // case-insensitive.
                    charCode = source.charCodeAt(Index);
                    if (charCode == 101 || charCode == 69) {
                      charCode = source.charCodeAt(++Index);
                      // Skip past the sign following the exponent, if one is
                      // specified.
                      if (charCode == 43 || charCode == 45) {
                        Index++;
                      }
                      // Parse the exponential component.
                      for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);
                      if (position == Index) {
                        // Illegal empty exponent.
                        abort();
                      }
                      Index = position;
                    }
                    // Coerce the parsed value to a JavaScript number.
                    return +source.slice(begin, Index);
                  }
                  // A negative sign may only precede numbers.
                  if (isSigned) {
                    abort();
                  }
                  // `true`, `false`, and `null` literals.
                  if (source.slice(Index, Index + 4) == "true") {
                    Index += 4;
                    return true;
                  } else if (source.slice(Index, Index + 5) == "false") {
                    Index += 5;
                    return false;
                  } else if (source.slice(Index, Index + 4) == "null") {
                    Index += 4;
                    return null;
                  }
                  // Unrecognized token.
                  abort();
              }
            }
            // Return the sentinel `$` character if the parser has reached the end
            // of the source string.
            return "$";
          };
  
          // Internal: Parses a JSON `value` token.
          var get = function (value) {
            var results, hasMembers;
            if (value == "$") {
              // Unexpected end of input.
              abort();
            }
            if (typeof value == "string") {
              if ((charIndexBuggy ? value.charAt(0) : value[0]) == "@") {
                // Remove the sentinel `@` character.
                return value.slice(1);
              }
              // Parse object and array literals.
              if (value == "[") {
                // Parses a JSON array, returning a new JavaScript array.
                results = [];
                for (;; hasMembers || (hasMembers = true)) {
                  value = lex();
                  // A closing square bracket marks the end of the array literal.
                  if (value == "]") {
                    break;
                  }
                  // If the array literal contains elements, the current token
                  // should be a comma separating the previous element from the
                  // next.
                  if (hasMembers) {
                    if (value == ",") {
                      value = lex();
                      if (value == "]") {
                        // Unexpected trailing `,` in array literal.
                        abort();
                      }
                    } else {
                      // A `,` must separate each array element.
                      abort();
                    }
                  }
                  // Elisions and leading commas are not permitted.
                  if (value == ",") {
                    abort();
                  }
                  results.push(get(value));
                }
                return results;
              } else if (value == "{") {
                // Parses a JSON object, returning a new JavaScript object.
                results = {};
                for (;; hasMembers || (hasMembers = true)) {
                  value = lex();
                  // A closing curly brace marks the end of the object literal.
                  if (value == "}") {
                    break;
                  }
                  // If the object literal contains members, the current token
                  // should be a comma separator.
                  if (hasMembers) {
                    if (value == ",") {
                      value = lex();
                      if (value == "}") {
                        // Unexpected trailing `,` in object literal.
                        abort();
                      }
                    } else {
                      // A `,` must separate each object member.
                      abort();
                    }
                  }
                  // Leading commas are not permitted, object property names must be
                  // double-quoted strings, and a `:` must separate each property
                  // name and value.
                  if (value == "," || typeof value != "string" || (charIndexBuggy ? value.charAt(0) : value[0]) != "@" || lex() != ":") {
                    abort();
                  }
                  results[value.slice(1)] = get(lex());
                }
                return results;
              }
              // Unexpected token encountered.
              abort();
            }
            return value;
          };
  
          // Internal: Updates a traversed object member.
          var update = function (source, property, callback) {
            var element = walk(source, property, callback);
            if (element === undef) {
              delete source[property];
            } else {
              source[property] = element;
            }
          };
  
          // Internal: Recursively traverses a parsed JSON object, invoking the
          // `callback` function for each value. This is an implementation of the
          // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.
          var walk = function (source, property, callback) {
            var value = source[property], length;
            if (typeof value == "object" && value) {
              // `forEach` can't be used to traverse an array in Opera <= 8.54
              // because its `Object#hasOwnProperty` implementation returns `false`
              // for array indices (e.g., `![1, 2, 3].hasOwnProperty("0")`).
              if (getClass.call(value) == arrayClass) {
                for (length = value.length; length--;) {
                  update(value, length, callback);
                }
              } else {
                forEach(value, function (property) {
                  update(value, property, callback);
                });
              }
            }
            return callback.call(source, property, value);
          };
  
          // Public: `JSON.parse`. See ES 5.1 section 15.12.2.
          exports.parse = function (source, callback) {
            var result, value;
            Index = 0;
            Source = "" + source;
            result = get(lex());
            // If a JSON string contains multiple tokens, it is invalid.
            if (lex() != "$") {
              abort();
            }
            // Reset the parser state.
            Index = Source = null;
            return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[""] = result, value), "", callback) : result;
          };
        }
      }
  
      exports["runInContext"] = runInContext;
      return exports;
    }
  
    if (freeExports && !isLoader) {
      // Export for CommonJS environments.
      runInContext(root, freeExports);
    } else {
      // Export for web browsers and JavaScript engines.
      var nativeJSON = root.JSON,
          previousJSON = root["JSON3"],
          isRestored = false;
  
      var JSON3 = runInContext(root, (root["JSON3"] = {
        // Public: Restores the original value of the global `JSON` object and
        // returns a reference to the `JSON3` object.
        "noConflict": function () {
          if (!isRestored) {
            isRestored = true;
            root.JSON = nativeJSON;
            root["JSON3"] = previousJSON;
            nativeJSON = previousJSON = null;
          }
          return JSON3;
        }
      }));
  
      root.JSON = {
        "parse": JSON3.parse,
        "stringify": JSON3.stringify
      };
    }
  
    // Export for asynchronous module loaders.
    if (isLoader) {
      define(function () {
        return JSON3;
      });
    }
  }).call(this);
  
  }).call(this,typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : typeof global !== "undefined" ? global : {})
  },{}],51:[function(_dereq_,module,exports){
  module.exports = toArray
  
  function toArray(list, index) {
      var array = []
  
      index = index || 0
  
      for (var i = index || 0; i < list.length; i++) {
          array[i - index] = list[i]
      }
  
      return array
  }
  
  },{}]},{},[31])(31)
  });
  
  }
  /*
   CloudApp
   */
  CB.CloudApp = CB.CloudApp || {};
  CB.CloudApp._isConnected = false;
  
  CB.CloudApp.init = function(serverUrl, applicationId, applicationKey, opts) { //static function for initialisation of the app
      if(!applicationKey)
      {
          applicationKey=applicationId;
          applicationId=serverUrl;
      }else {        
          CB.apiUrl = serverUrl;             
      }
  
      if(typeof applicationKey === "object"){
          opts = applicationKey;
          applicationKey=applicationId;
          applicationId=serverUrl;
      }
  
      CB.appId = applicationId;
      CB.appKey = applicationKey;
  
      if(opts && opts.disableRealtime === true){
          CB._isRealtimeDisabled = true;
      }else{
          //load socket.io.
          if(CB._isNode)
          {
              CB.io = require('socket.io-client');
          }
          else {
              CB.io = io;
          }
  
          CB.Socket = CB.io(CB.apiUrl);        
      } 
      CB.CloudApp._isConnected = true;  
  };
  
  CB.CloudApp.onConnect = function(functionToFire) { //static function for initialisation of the app
      CB._validate();
  
      if(!CB.Socket){
          throw "Socket couldn't be found. Init app first.";
      }
  
      CB.Socket.on('connect', functionToFire);
      
  
  };
  
  CB.CloudApp.onDisconnect = function(functionToFire) { //static function for initialisation of the app
      CB._validate();
  
      if(!CB.Socket){
          throw "Socket couldn't be found. Init app first.";
      }
  
      CB.Socket.on('disconnect', functionToFire);
  
  };
  
  CB.CloudApp.connect = function() { //static function for initialisation of the app
      CB._validate();
  
      if(!CB.Socket){
          throw "Socket couldn't be found. Init app first.";
      }
  
      CB.Socket.connect();
      CB.CloudApp._isConnected = true;
  };
  
  CB.CloudApp.disconnect = function() { //static function for initialisation of the app
      CB._validate();
  
      if(!CB.Socket){
          throw "Socket couldn't be found. Init app first.";
      }
  
      CB.Socket.emit('socket-disconnect',CB.appId);
      CB.CloudApp._isConnected = false;
  };
  CB.ACL = function() { //constructor for ACL class
      this.document = {};
      this.document['read'] = {"allow":{"user":['all'],"role":[]},"deny":{"user":[],"role":[]}}; //by default allow read access to "all"
      this.document['write'] = {"allow":{"user":['all'],"role":[]},"deny":{"user":[],"role":[]}}; //by default allow write access to "all"
      this.parent = null;
  };
  CB.ACL.prototype.setPublicWriteAccess = function(value) { //for setting the public write access
      if (value) { //If asked to allow public write access
          this.document['write']['allow']['user'] = ['all'];
      } else {
          var index = this.document['write']['allow']['user'].indexOf('all');
          if (index > -1) {
              this.document['write']['allow']['user'].splice(index, 1); //remove the "all" value from the "write" array of "this" object
          }
      }
  
      if(this.parent){
          CB._modified(this.parent,'ACL');
      }
  };
  CB.ACL.prototype.setPublicReadAccess = function(value) { //for setting the public read access
  
      if (value) { //If asked to allow public read access
          this.document['read']['allow']['user'] = ['all'];
      } else {
          var index = this.document['read']['allow']['user'].indexOf('all');
          if (index > -1) {
              this.document['read']['allow']['user'].splice(index, 1); //remove the "all" value from the "read" array of "this" object
          }
      }
  
      if(this.parent){
          CB._modified(this.parent,'ACL');
      }
  };
  CB.ACL.prototype.setUserWriteAccess = function(userId, value) { //for setting the user write access
  
      if (value) { //If asked to allow user write access
          //remove public write access.
          var index = this.document['write']['allow']['user'].indexOf('all');
          if (index > -1) {
              this.document['write']['allow']['user'].splice(index, 1);
          }
          if (this.document['write']['allow']['user'].indexOf(userId) === -1) {
              this.document['write']['allow']['user'].push(userId);
          }
      } else {
          var index = this.document['write']['allow']['user'].indexOf(userId);
          if (index > -1) {
              this.document['write']['allow']['user'].splice(index, 1); //remove the "userId" value from the "write" array of "this" object
          }
          this.document['write']['deny']['user'].push(userId);
      }
  
      if(this.parent){
          CB._modified(this.parent,'ACL');
      }
  };
  CB.ACL.prototype.setUserReadAccess = function(userId, value) { //for setting the user read access
  
      if (value) { //If asked to allow user read access
          //remove public write access.
          var index = this.document['read']['allow']['user'].indexOf('all');
          if (index > -1) {
              this.document['read']['allow']['user'].splice(index, 1);
          }
          if (this.document['read']['allow']['user'].indexOf(userId) === -1) {
              this.document['read']['allow']['user'].push(userId);
          }
      } else {
          var index = this.document['read']['allow']['user'].indexOf(userId);
          if (index > -1) {
              this.document['read']['allow']['user'].splice(index, 1); //remove the "userId" value from the "read" array of "this" object
          }
          this.document['read']['deny']['user'].push(userId);
      }
  
      if(this.parent){
          CB._modified(this.parent,'ACL');
      }
  };
  CB.ACL.prototype.setRoleWriteAccess = function(roleId, value) {
  
      if (value) {
          //remove public write access.
          var index = this.document['write']['allow']['user'].indexOf('all');
          if (index > -1) {
              this.document['write']['allow']['user'].splice(index, 1);
          }
          if (this.document['write']['allow']['role'].indexOf(roleId) === -1) {
              this.document['write']['allow']['role'].push(roleId);
          }
      } else {
          var index = this.document['write']['allow']['role'].indexOf(roleId);
          if (index > -1) {
              this.document['write']['allow']['role'].splice(index, 1);
          }
          var index = this.document['write']['allow']['user'].indexOf('all');
          if (index > -1) {
              this.document['write']['allow']['user'].splice(index, 1);
          }
  
          this.document['write']['deny']['role'].push(roleId);
      }
  
      if(this.parent){
          CB._modified(this.parent,'ACL');
      }
  };
  CB.ACL.prototype.setRoleReadAccess = function(roleId, value) {
  
      if (value) {
          //remove public write access.
          var index = this.document['read']['allow']['user'].indexOf('all');
          if (index > -1) {
              this.document['read']['allow']['user'].splice(index, 1);
          }
          if (this.document['read']['allow']['role'].indexOf(roleId) === -1) {
              this.document['read']['allow']['role'].push(roleId);
          }
      } else {
          var index = this.document['read']['allow']['role'].indexOf(roleId);
          if (index > -1) {
              this.document['read']['allow']['role'].splice(index, 1);
          }
          var index = this.document['read']['allow']['user'].indexOf('all');
          if (index > -1) {
              this.document['read']['allow']['user'].splice(index, 1);
          }
          this.document['read']['deny']['role'].push(roleId);
      }
  
      if(this.parent){
          CB._modified(this.parent,'ACL');
      }
  };
  
  /* CloudNotificiation */
  
  CB.CloudNotification = CB.CloudNotification || {};
  
  CB.CloudNotification.on = function(channelName, callback, done) {
  
      if(CB._isRealtimeDisabled){
          throw "Realtime is disbaled for this app.";
      }
  
      CB._validate();
  
      var def;
  
      if (!done) {
          def = new CB.Promise();
      }
  
      CB.Socket.emit('join-custom-channel',CB.appId+channelName);
      CB.Socket.on(CB.appId+channelName, function(data){ //listen to events in custom channel.
          callback(data);
      });
  
      if(done && done.success)
          done.success();
      else
          def.resolve();
  
      if (!done) {
          return def;
      }
  
  };
  
  CB.CloudNotification.off = function(channelName, done) {
  
      if(CB._isRealtimeDisabled){
          throw "Realtime is disbaled for this app.";
      }
  
      CB._validate();
  
      var def;
  
      if (!done) {
          def = new CB.Promise();
      }
  
      CB.Socket.emit('leave-custom-channel',CB.appId+channelName);
      CB.Socket.removeAllListeners(CB.appId+channelName);
      if(done && done.success)
          done.success();
      else
          def.resolve();
  
      if (!done) {
          return def;
      }
  
  };
  
  CB.CloudNotification.publish = function(channelName, data, done) {
  
      if(CB._isRealtimeDisabled){
          throw "Realtime is disbaled for this app.";
      }
  
      CB._validate();
  
      var def;
  
      if (!done) {
          def = new CB.Promise();
      }
  
      CB.Socket.emit('publish-custom-channel',{channel:CB.appId+channelName,data : data});
      if(done && done.success)
          done.success();
      else
          def.resolve();
  
      if (!done) {
          return def;
      }
  
  };
  
  /*
   CloudObject
   */
  
  CB.CloudObject = function(tableName, id) { //object for documents
  
      this.document = {};
      this.document._tableName = tableName; //the document object
      this.document.ACL = new CB.ACL(); //ACL(s) of the document
      this.document._type = 'custom';
      this.document.expires = null;
      this.document._hash = CB._generateHash();
  
      if(!id){
          this.document._modifiedColumns = ['createdAt','updatedAt','ACL','expires'];
          this.document._isModified = true;
      }
      else{
          this.document._modifiedColumns = [];
          this.document._isModified = false;
          this.document._id = id;
      }   
  };
  
  Object.defineProperty(CB.CloudObject.prototype, 'ACL', {
      get: function() {
          return this.document.ACL;
      },
      set: function(ACL) {
          this.document.ACL = ACL;
          this.document.ACL.parent = this;
          CB._modified(this,'ACL');
      }
  });
  
  Object.defineProperty(CB.CloudObject.prototype, 'id', {
      get: function() {
          return this.document._id;
      }
  });
  
  Object.defineProperty(CB.CloudObject.prototype, 'createdAt', {
      get: function() {
          return this.document.createdAt;
      },
      set: function(createdAt) {
          this.document.createdAt = createdAt;
          CB._modified(this,'createdAt');
      }
  });
  
  Object.defineProperty(CB.CloudObject.prototype, 'updatedAt', {
      get: function() {
          return this.document.updatedAt;
      },
      set: function(updatedAt) {
          this.document.updatedAt = updatedAt;
          CB._modified(this,'updatedAt');
      }
  });
  
  
  /* For Expire of objects */
  Object.defineProperty(CB.CloudObject.prototype, 'expires', {
      get: function() {
          return this.document.expires;
      },
      set: function(expires) {
          this.document.expires = expires;
          CB._modified(this,'expires');
      }
  });
  
  /* This is Real time implementation of CloudObjects */
  CB.CloudObject.on = function(tableName, eventType, cloudQuery, callback, done) {
  
      if(CB._isRealtimeDisabled){
          throw "Realtime is disbaled for this app.";
      }
  
      var def;
  
      //shift variables.
      if(cloudQuery && !(cloudQuery instanceof CB.CloudQuery)){
          //this is a function.
          if(callback !== null && typeof callback === 'object'){
              //callback is actually done.
              done = callback;
              callback = null;
          }
          callback = cloudQuery;
          cloudQuery = null;
      }
  
      if (!done) {
          def = new CB.Promise();
      }
  
      //validate query.
      if(cloudQuery && cloudQuery instanceof CB.CloudQuery){
  
          if(cloudQuery.tableName!== tableName){
              throw "CloudQuery TableName and CloudNotification TableName should be same.";
          }
  
          if(cloudQuery.query){
              if(cloudQuery.query.$include.length>0){
                  throw "Include with CloudNotificaitons is not supported right now.";
              }
          }
  
          if(Object.keys(cloudQuery.select).length > 0){
              throw "You cannot pass the query with select in CloudNotifications.";
          }
      }
  
      tableName = tableName.toLowerCase();
  
      if (eventType instanceof Array) {
          //if event type is an array.
          for(var i=0;i<eventType.length;i++){
              CB.CloudObject.on(tableName, eventType[i], cloudQuery, callback);
              if(done && done.success)
                  done.success();
              else
                  def.resolve();
          }
      } else {
          eventType = eventType.toLowerCase();
          if(eventType==='created' || eventType === 'updated' || eventType === 'deleted'){
  
              var payload = {
                  room :(CB.appId+'table'+tableName+eventType).toLowerCase(),
                  sessionId : CB._getSessionId()
              };
  
              CB.Socket.emit('join-object-channel',payload);
              CB.Socket.on((CB.appId+'table'+tableName+eventType).toLowerCase(), function(data){ //listen to events in custom channel.
                  data = CB.fromJSON(data);
                  if(cloudQuery && cloudQuery instanceof CB.CloudQuery && CB.CloudObject._validateNotificationQuery(data, cloudQuery))
                      callback(data);
                  else if(!cloudQuery)
                      callback(data);
              });
  
              if(done && done.success)
                  done.success();
              else
                  def.resolve();
          }else{
              throw 'created, updated, deleted are supported notification types.';
          }
      }
  
      if (!done) {
          return def;
      }
  };
  
  CB.CloudObject.off = function(tableName, eventType, done) {
  
      if(CB._isRealtimeDisabled){
          throw "Realtime is disbaled for this app.";
      }
  
      var def;
  
      if (!done) {
          def = new CB.Promise();
      }
  
      tableName = tableName.toLowerCase();
  
      if (eventType instanceof Array) {
          //if event type is an array.
          for(var i=0;i<eventType.length;i++){
              CB.CloudObject.off(tableName, eventType[i]);
              if(done && done.success)
                  done.success();
              else
                  def.resolve();
          }
      } else {
  
          eventType = eventType.toLowerCase();
  
          if(eventType==='created' || eventType === 'updated' || eventType === 'deleted'){
              CB.Socket.emit('leave-object-channel',(CB.appId+'table'+tableName+eventType).toLowerCase());
              CB.Socket.removeAllListeners((CB.appId+'table'+tableName+eventType).toLowerCase());
              if(done && done.success)
                  done.success();
              else
                  def.resolve();
          }else{
              throw 'created, updated, deleted are supported notification types.';
          }
      }
  
      if (!done) {
          return def;
      }
  };
  
  /* RealTime implementation ends here.  */
  
  CB.CloudObject.prototype.set = function(columnName, data) { //for setting data for a particular column
  
      var keywords = ['_tableName', '_type', 'operator'];
  
      if(columnName=== 'id' || columnName === '_id')
          throw "You cannot set the id of a CloudObject";
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      if (keywords.indexOf(columnName) > -1) {
          throw columnName + " is a keyword. Please choose a different column name.";
      }
      this.document[columnName] = data;
      CB._modified(this,columnName);
  };
  
  
  CB.CloudObject.prototype.relate = function(columnName, objectTableName, objectId) { //for setting data for a particular column
  
      var keywords = ['_tableName', '_type', 'operator'];
  
      if(columnName=== 'id' || columnName === '_id')
          throw "You cannot set the id of a CloudObject";
  
      if (columnName === 'id')
          throw "You cannot link an object to this column";
  
      if (keywords.indexOf(columnName) > -1) {
          throw columnName + " is a keyword. Please choose a different column name.";
      }
  
      this.document[columnName] = new CB.CloudObject(objectTableName,objectId);
      CB._modified(this,columnName);
  };
  
  
  CB.CloudObject.prototype.get = function(columnName) { //for getting data of a particular column
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      return this.document[columnName];
  
  };
  
  CB.CloudObject.prototype.unset = function(columnName) { //to unset the data of the column
      this.document[columnName] = null;
      CB._modified(this,columnName);
  };
  
  /**
   * Saved CloudObject in Database.
   * @param callback
   * @returns {*}
   */
  
  CB.CloudObject.prototype.save = function(callback) { //save the document to the db
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
      var thisObj = this;
      CB._fileCheck(this).then(function(thisObj){
  
          var xmlhttp = CB._loadXml();
          var params=JSON.stringify({
              document: CB.toJSON(thisObj),
              key: CB.appKey
          });
          var url = CB.apiUrl + "/data/" + CB.appId + '/'+thisObj.document._tableName;
          CB._request('PUT',url,params).then(function(response){
              thisObj = CB.fromJSON(JSON.parse(response),thisObj);
              if (callback) {
                  callback.success(thisObj);
              } else {
                  def.resolve(thisObj);
              }
          },function(err){
              if(callback){
                  callback.error(err);
              }else {
                  def.reject(err);
              }
          });
  
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
      if (!callback) {
          return def;
      }
  };
  
  CB.CloudObject.prototype.fetch = function(callback) { //fetch the document from the db
      if (!CB.appId) {
          throw "CB.appId is null.";
      }
      if (!this.document._id) {
          throw "Can't fetch an object which is not saved."
      }
      var thisObj = this;
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      var query = null;
      if(thisObj.document._type === 'file'){
          query = new CB.CloudQuery('_File');
      }else{
          query = new CB.CloudQuery(thisObj.document._tableName);
      }
      query.findById(thisObj.get('id')).then(function(res){
          if(!callback){
              def.resolve(res);
          }else{
              callback.success(res);
          }
      },function(err){
          if(!callback){
              def.reject(err);
          }else{
              callback.error(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  
  };
  
  CB.CloudObject.prototype.delete = function(callback) { //delete an object matching the objectId
      if (!CB.appId) {
          throw "CB.appId is null.";
      }
      if (!this.document._id) {
          throw "You cannot delete an object which is not saved."
      }
      var thisObj = this;
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      var params=JSON.stringify({
          key: CB.appKey,
          document: CB.toJSON(thisObj),
          method:"DELETE"
      });
      
      var url = CB.apiUrl + "/data/" + CB.appId +'/'+thisObj.document._tableName;
  
      CB._request('PUT',url,params).then(function(response){
          thisObj = CB.fromJSON(JSON.parse(response),thisObj);
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  CB.CloudObject.saveAll = function(array,callback){
  
      if(!array || array.constructor !== Array){
          throw "Array of CloudObjects is Null";
      }
  
      for(var i=0;i<array.length;i++){
          if(!(array[i] instanceof CB.CloudObject)){
              throw "Should Be an Array of CloudObjects";
          }
      }
  
      var def;
      if(!callback){
          def = new CB.Promise();
      }
  
      CB._bulkObjFileCheck(array).then(function(){
          var xmlhttp = CB._loadXml();
          var params=JSON.stringify({
              document: CB.toJSON(array),
              key: CB.appKey
          });
          var url = CB.apiUrl + "/data/" + CB.appId + '/'+array[0]._tableName;
          CB._request('PUT',url,params).then(function(response){
              var thisObj = CB.fromJSON(JSON.parse(response));
              if (callback) {
                  callback.success(thisObj);
              } else {
                  def.resolve(thisObj);
              }
          },function(err){
              if(callback){
                  callback.error(err);
              }else {
                  def.reject(err);
              }
          });
  
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  
  };
  
  CB.CloudObject.deleteAll = function(array,callback){
  
      if(!array && array.constructor !== Array){
          throw "Array of CloudObjects is Null";
      }
  
      for(var i=0;i<array.length;i++){
          if(!(array[i] instanceof CB.CloudObject)){
              throw "Should Be an Array of CloudObjects";
          }
      }
  
      var def;
      if(!callback){
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
      var params=JSON.stringify({
          document: CB.toJSON(array),
          key: CB.appKey,
          method:"DELETE"
      });
      var url = CB.apiUrl + "/data/" + CB.appId + '/'+array[0]._tableName;
      CB._request('PUT',url,params).then(function(response){
          var thisObj = CB.fromJSON(JSON.parse(response));
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  
  };
  
  /* Private Methods */
  CB.CloudObject._validateNotificationQuery = function(cloudObject, cloudQuery) { //delete an object matching the objectId
  
     if(!cloudQuery)
          throw "CloudQuery is null";
  
      if(!cloudQuery.query)
          throw "There is no query in CloudQuery";
  
     //validate query.
     var query = cloudQuery.query;
  
     if(cloudQuery.limit===0)
          return false;
  
     if(cloudQuery.skip>0){
          --cloudQuery.skip;
          return false;
      }
  
  
     //delete include
     delete query.$include;
  
     if(CB.CloudQuery._validateQuery(cloudObject, query)){
          //redice limit of CloudQuery.
         --cloudQuery.limit;
         return true;
     }else{
      return false;
     }
  };
  
  
  /*
   CloudQuery
   */
  CB.CloudQuery = function(tableName) { //constructor for the class CloudQuery
  
      if(!tableName)
          throw "Table Name cannot be null";
  
      this.tableName = tableName;
      this.query = {};
      this.query.$include = [];
      this.query.$includeList = [];
      this.select = {};
      this.sort = {};
      this.skip = 0;
      this.limit = 10; //default limit is 10
  };
  
  CB.CloudQuery.prototype.search = function(search, language, caseSensitive, diacriticSensitive) {    
  
      //Validations
      if(typeof search !=="string"){
          throw "First parameter is required and it should be a string.";
      }
  
      if((language !==null) && (typeof language !=="undefined") && (typeof language !=="string")){
          throw "Second parameter should be a string.";
      }
  
      if((caseSensitive!==null) && (typeof caseSensitive !=="undefined") && (typeof caseSensitive !=="boolean")){
          throw "Third parameter should be a boolean."
      }
  
      if((diacriticSensitive!==null) && (typeof diacriticSensitive !=="undefined") && (typeof diacriticSensitive !=="boolean")){
          throw "Fourth parameter should be a boolean.";
      }
  
      //Set the fields
      this.query["$text"]={};
      if(typeof search ==="string"){
          this.query["$text"]["$search"]=search; 
      }
  
      if((language !==null) && (typeof language !=="undefined") && (typeof language ==="string")){
          this.query["$text"]["$language"]=language;
      }
  
      if((caseSensitive!==null) && (typeof caseSensitive !=="undefined") && (typeof caseSensitive ==="boolean")){
          this.query["$text"]["$caseSensitive"]=caseSensitive; 
      }
  
      if((diacriticSensitive!==null) && (typeof diacriticSensitive !=="undefined") && (typeof diacriticSensitive ==="boolean")){
          this.query["$text"]["$diacriticSensitive"]=diacriticSensitive;
      }
      
      return this;
  };
  
  // Logical operations
  CB.CloudQuery.or = function(obj1, obj2) {
  
      var tableName;
      var queryArray=[];
  
      if(Object.prototype.toString.call(obj1)==="[object Array]"){
          tableName=obj1[0].tableName;
          for(var i=0;i<obj1.length;++i){
              if(obj1[i].tableName!=tableName){
                  throw "Table names are not same";
                  break;
              }
              if(!obj1[i] instanceof CB.CloudQuery){
                  throw "Array items are not instanceof of CloudQuery";
                  break;
              }
              queryArray.push(obj1[i].query);
          }
      }
  
      if(typeof obj2 !== 'undefined' && typeof obj1 !== 'undefined' && Object.prototype.toString.call(obj1)!=="[object Array]"){
  
          if(Object.prototype.toString.call(obj2)==="[object Array]"){
              throw "First and second parameter should be an instance of CloudQuery object";
          }
          if (!obj1.tableName === obj2.tableName) {
              throw "Table names are not same";
          }        
          if(!obj1 instanceof CB.CloudQuery){
              throw "Data passed is not an instance of CloudQuery";
          }
          if(!obj2 instanceof CB.CloudQuery){
              throw "Data passed is not an instance of CloudQuery";
          }
          tableName=obj1.tableName;
          queryArray.push(obj1.query);
          queryArray.push(obj2.query);
      }
      if(typeof tableName === 'undefined'){
          throw "Invalid operation";
      }     
      var obj = new CB.CloudQuery(tableName);   
      obj.query["$or"] = queryArray;
      return obj;
  }
  
  
  CB.CloudQuery.prototype.equalTo = function(columnName, data) {
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      if(data !== null){
          if( data.constructor === CB.CloudObject){
              columnName = columnName+'._id';
              data = data.get('id');
          }
  
          this.query[columnName] = data;
      }else{
  
          //This is for people who code : obj.equalTo('column', null);
          this.doesNotExists(columnName);
      }
  
      return this;
  };
  
  CB.CloudQuery.prototype.includeList = function (columnName) {
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      this.query.$includeList.push(columnName);
  
      return this;
  };
  
  
  CB.CloudQuery.prototype.include = function (columnName) {
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      this.query.$include.push(columnName);
  
      return this;
  };
  
  CB.CloudQuery.prototype.all = function (columnName) {
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      this.query.$all = columnName;
  
      return this;
  };
  
  CB.CloudQuery.prototype.any = function (columnName) {
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      this.query.$any = columnName;
  
      return this;
  };
  
  CB.CloudQuery.prototype.first = function (columnName) {
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      this.query.$first = columnName;
  
      return this;
  };
  
  CB.CloudQuery.prototype.notEqualTo = function(columnName, data) {
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      if(data !== null){
  
          if(data.constructor === CB.CloudObject){
              columnName = columnName+'._id';
              data = data.get('id');
          }
  
          this.query[columnName] = {
              $ne: data
          };
      }else{
          //This is for people who code : obj.notEqualTo('column', null);
          this.exists(columnName); 
      }
  
      return this;
  };
  CB.CloudQuery.prototype.greaterThan = function(columnName, data) {
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      if (!this.query[columnName]) {
          this.query[columnName] = {};
      }
      this.query[columnName]["$gt"] = data;
  
      return this;
  };
  CB.CloudQuery.prototype.greaterThanEqualTo = function(columnName, data) {
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      if (!this.query[columnName]) {
          this.query[columnName] = {};
      }
      this.query[columnName]["$gte"] = data;
  
      return this;
  };
  CB.CloudQuery.prototype.lessThan = function(columnName, data) {
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
  
      if (!this.query[columnName]) {
          this.query[columnName] = {};
      }
      this.query[columnName]["$lt"] = data;
  
      return this;
  };
  CB.CloudQuery.prototype.lessThanEqualTo = function(columnName, data) {
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
  
      if (!this.query[columnName]) {
          this.query[columnName] = {};
      }
      this.query[columnName]["$lte"] = data;
  
      return this;
  };
  
  //Sorting
  CB.CloudQuery.prototype.orderByAsc = function(columnName) {
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      this.sort[columnName] = 1;
  
      return this;
  };
  
  CB.CloudQuery.prototype.orderByDesc = function(columnName) {
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      this.sort[columnName] = -1;
  
      return this;
  };
  
  //Limit and skip
  CB.CloudQuery.prototype.setLimit = function(data) {
  
      this.limit = data;
      return this;
  };
  CB.CloudQuery.prototype.setSkip = function(data) {
      this.skip = data;
      return this;
  };
  
  CB.CloudQuery.prototype.paginate = function(pageNo,totalItemsInPage,callback) {   
  
      if (!CB.appId) {
          throw "CB.appId is null.";
      }
      if (!this.tableName) {
          throw "TableName is null.";
      }
      var def;
      var callback;
      if(typeof callback === 'object' && typeof callback.success === 'function'){
          callback=callback;
      }    
      if (!callback) {
          def = new CB.Promise();
      }  
  
      if(pageNo && typeof pageNo === 'object' && typeof pageNo.success === 'function'){
          callback=pageNo;
          pageNo=null;
      }
      if(totalItemsInPage && typeof totalItemsInPage === 'object' && typeof totalItemsInPage.success === 'function'){
          callback=totalItemsInPage;
          totalItemsInPage=null;
      }    
  
      if(pageNo && typeof pageNo === 'number' && pageNo>0){
          if(typeof totalItemsInPage === 'number' && totalItemsInPage>0){
              var skip=(pageNo*totalItemsInPage)-totalItemsInPage;
              this.setSkip(skip);
              this.setLimit(totalItemsInPage);
          }
      }      
  
      if(totalItemsInPage && typeof totalItemsInPage === 'number' && totalItemsInPage>0){        
          this.setLimit(totalItemsInPage);
      }
      var thisObj=this;    
  
      var promises = [];
      promises.push(this.find());
  
      var countQuery = Object.create(this);
      countQuery.setSkip(0);
      countQuery.setLimit(99999999);
  
      promises.push(countQuery.count());
  
      CB.Promise.all(promises).then(function(list){
          var objectsList=null;
          var count=null;
          var totalPages=0;
  
          if(list && list.length>0){
              objectsList=list[0];
              count=list[1];
              if(!count){
                  count=0;
                  totalPages=0;
              }else{
                  totalPages=Math.ceil(count/thisObj.limit);
              }            
              if(totalPages && totalPages<0){
                  totalPages=0;
              }
          }
          if(callback) {
              callback.success(objectsList,count,totalPages);
          }else {            
              def.resolve(objectsList,count,totalPages);
          }
      },function(error){
          if(callback){
              callback.error(error);
          }else {
              def.reject(error);
          }
      });
  
      if (!callback) {
          return def;
      }  
  
  };
  
  //select/deselect columns to show
  CB.CloudQuery.prototype.selectColumn = function(columnNames) {
  
      if(Object.keys(this.select).length === 0){
          this.select = {
              _id : 1,
              createdAt : 1,
              updatedAt : 1,
              ACL : 1,
              _type : 1,
              _tableName : 1
          }
      }
  
      if (Object.prototype.toString.call(columnNames) === '[object Object]') {
          this.select = columnNames;
      } else if (Object.prototype.toString.call(columnNames) === '[object Array]') {
          for (var i = 0; i < columnNames.length; i++) {
              this.select[columnNames[i]] = 1;
          }
      } else {
          this.select[columnNames] = 1;
      }
  
      return this;
  };
  
  CB.CloudQuery.prototype.doNotSelectColumn = function(columnNames) {
      if (Object.prototype.toString.call(columnNames) === '[object Object]') {
          this.select = columnNames;
      } else if (Object.prototype.toString.call(columnNames) === '[object Array]') {
          for (var i = 0; i < columnNames.length; i++) {
              this.select[columnNames[i]] = 0;
          }
      } else {
          this.select[columnNames] = 0;
      }
  
      return this;
  };
  
  CB.CloudQuery.prototype.containedIn = function(columnName, data) {
  
      var isCloudObject = false;
  
      var CbData = [];
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      if (Object.prototype.toString.call(data) === '[object Object]' && !data instanceof CB.CloudObject) { //if object is passed as an argument
          throw 'Array / value / CloudObject expected as an argument';
      }
  
  
      if (Object.prototype.toString.call(data) === '[object Array]') { //if array is passed, then replace the whole
  
          for(var i=0; i<data.length; i++){
              if(data[i] instanceof CB.CloudObject){
                  isCloudObject = true;
                  if(!data[i].id){
                      throw "CloudObject passed should be saved and should have an id before being passed to containedIn";
                  }
                  CbData.push(data[i].id);
              }
          }
          if(CbData.length === 0){
              CbData = data;
          }
  
          if(isCloudObject){
              columnName = columnName+'._id';
          }
  
  
          if (!this.query[columnName]) {
              this.query[columnName] = {};
          }
  
          this.query[columnName]["$in"] = CbData;
          thisObj = this;
          if (typeof this.query[columnName]["$nin"] !== 'undefined') { //for removing dublicates
              CbData.forEach(function(val) {
                  if ((index = thisObj.query[columnName]["$nin"].indexOf(val)) >= 0) {
                      thisObj.query[columnName]["$nin"].splice(index, 1);
                  }
              });
          }
      } else { //if the argument is a string then push if it is not present already
  
  
          if(data instanceof CB.CloudObject){
  
              if(!data.id){
                  throw "CloudObject passed should be saved and should have an id before being passed to containedIn";
              }
  
              columnName = columnName+'._id';
              CbData = data.id;
          }else
              CbData = data;
  
          if (!this.query[columnName]) {
              this.query[columnName] = {};
          }
  
  
          if (!this.query[columnName]["$in"]) {
              this.query[columnName]["$in"] = [];
          }
          if (this.query[columnName]["$in"].indexOf(CbData) === -1) {
              this.query[columnName]["$in"].push(CbData);
          }
          if (typeof this.query[columnName]["$nin"] !== 'undefined') {
              if ((index = this.query[columnName]["$nin"].indexOf(CbData)) >= 0) {
                  this.query[columnName]["$nin"].splice(index, 1);
              }
          }
      }
  
  
      return this;
  }
  
  CB.CloudQuery.prototype.notContainedIn = function(columnName, data) {
  
      var isCloudObject = false;
  
      var CbData = [];
      if (columnName === 'id' )
          columnName = '_' + columnName;
  
      if (Object.prototype.toString.call(data) === '[object Object]' && !data instanceof CB.CloudObject) { //if object is passed as an argument
          throw 'Array or string expected as an argument';
      }
  
      if (Object.prototype.toString.call(data) === '[object Array]') { //if array is passed, then replace the whole
  
          for(var i=0; i<data.length; i++){
              if(data[i] instanceof CB.CloudObject){
                  isCloudObject = true;
                  if(!data[i].id){
                      throw "CloudObject passed should be saved and should have an id before being passed to notContainedIn";
                  }
  
                  CbData.push(data[i].id);
              }
          }
          if(CbData.length === 0){
              CbData = data;
          }
  
          if(isCloudObject){
              columnName = columnName+'._id';
          }
  
  
          if (!this.query[columnName]) {
              this.query[columnName] = {};
          }
  
          this.query[columnName]["$nin"] = CbData;
          if (typeof this.query[columnName]["$in"] !== 'undefined') { //for removing duplicates
              thisObj = this;
              CbData.forEach(function(val) {
                  if ((index = thisObj.query[columnName]["$in"].indexOf(val)) >= 0) {
                      thisObj.query[columnName]["$in"].splice(index, 1);
                  }
              });
          }
      } else { //if the argument is a string then push if it is not present already
  
          if(data instanceof CB.CloudObject){
  
              if(!data.id){
                  throw "CloudObject passed should be saved and should have an id before being passed to notContainedIn";
              }
  
              columnName = columnName+'._id';
              CbData = data.id;
          }else
              CbData = data;
  
          if (!this.query[columnName]) {
              this.query[columnName] = {};
          }
  
  
          if (!this.query[columnName]["$nin"]) {
              this.query[columnName]["$nin"] = [];
          }
          if (this.query[columnName]["$nin"].indexOf(CbData) === -1) {
              this.query[columnName]["$nin"].push(CbData);
          }
          if (typeof this.query[columnName]["$in"] !== 'undefined') {
              if ((index = this.query[columnName]["$in"].indexOf(CbData)) >= 0) {
                  this.query[columnName]["$in"].splice(index, 1);
              }
          }
      }
  
      return this;
  }
  
  CB.CloudQuery.prototype.exists = function(columnName) {
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      if (!this.query[columnName]) {
          this.query[columnName] = {};
      }
      this.query[columnName]["$exists"] = true;
  
      return this;
  }
  
  CB.CloudQuery.prototype.doesNotExists = function(columnName) {
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      if (!this.query[columnName]) {
          this.query[columnName] = {};
      }
      this.query[columnName]["$exists"] = false;
  
      return this;
  }
  
  CB.CloudQuery.prototype.containsAll = function(columnName, data) {
  
      var isCloudObject = false;
  
      var CbData = [];
  
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      if (Object.prototype.toString.call(data) === '[object Object]' && !data instanceof CB.CloudObject) { //if object is passed as an argument
          throw 'Array or string expected as an argument';
      }
  
      if (Object.prototype.toString.call(data) === '[object Array]') { //if array is passed, then replace the whole
  
  
  
          for(var i=0; i<data.length; i++){
              if(data[i] instanceof CB.CloudObject){
  
                  isCloudObject = true;
  
                  if(!data[i].id){
                      throw "CloudObject passed should be saved and should have an id before being passed to containsAll";
                  }
  
                  CbData.push(data[i].id);
              }
          }
  
          if(CbData.length === 0){
              CbData = data;
          }
  
          if(isCloudObject){
              columnName = columnName+'._id';
          }
  
          if (!this.query[columnName]) {
              this.query[columnName] = {};
          }
  
          this.query[columnName]["$all"] = CbData;
  
      } else { //if the argument is a string then push if it is not present already
  
          if(data instanceof CB.CloudObject){
  
              if(!data.id){
                  throw "CloudObject passed should be saved and should have an id before being passed to containsAll";
              }
  
              columnName = columnName+'._id';
              CbData = data.id;
          }else
              CbData = data;
  
          if (!this.query[columnName]) {
              this.query[columnName] = {};
          }
  
  
          if (!this.query[columnName]["$all"]) {
              this.query[columnName]["$all"] = [];
          }
          if (this.query[columnName]["$all"].indexOf(CbData) === -1) {
              this.query[columnName]["$all"].push(CbData);
          }
  
      }
  
      return this;
  }
  
  
  CB.CloudQuery.prototype.startsWith = function(columnName, value) {
      if (columnName === 'id' )
          columnName = '_' + columnName;
  
      var regex = '^' + value;
      if (!this.query[columnName]) {
          this.query[columnName] = {};
      } 
  
      this.query[columnName]["$regex"] = regex;
      this.query[columnName]["$options"] = 'im';
      
      return this;
  }
  
  
  CB.CloudQuery.prototype.regex = function(columnName, value, isCaseInsensitive) {
      if (columnName === 'id' )
          columnName = '_' + columnName;
  
      if (!this.query[columnName]) {
          this.query[columnName] = {};
      } 
  
      this.query[columnName]["$regex"] = value;
  
      if(isCaseInsensitive){
          this.query[columnName]["$options"] = "i";
      }
      
      return this;
  }
  
  CB.CloudQuery.prototype.substring = function(columnName, value, isCaseInsensitive) {
  
        if(typeof columnName === "string"){
          columnName = [columnName];
        }
  
        for(var j=0;j<columnName.length;j++){
            if(Object.prototype.toString.call(value) === '[object Array]' && value.length>0) {
              if(!this.query["$or"])
                  this.query["$or"] = [];
              for(i=0; i < value.length; i++){
                  var obj = {};
                  obj[columnName[j]] = {};
                  obj[columnName[j]]["$regex"] = ".*"+value[i]+".*";
  
                  if(isCaseInsensitive){
                      obj[columnName[j]]["$options"] = "i";                   
                  }
  
                  this.query["$or"].push(obj);
              }
            }else{
              if(columnName.length===1){
                  this.regex(columnName[j],".*"+value+".*",isCaseInsensitive);
              }else{
                  if(!this.query["$or"])
                      this.query["$or"] = [];
                  var obj = {};
                  obj[columnName[j]] = {};
                  obj[columnName[j]]["$regex"] = ".*"+value+".*";
  
                  if(isCaseInsensitive){                    
                      obj[columnName[j]]["$options"] = "i";
                  }
  
                  this.query["$or"].push(obj);
              }
            }
        }
  
        return this;
  }
  
  //GeoPoint near query
  CB.CloudQuery.prototype.near = function(columnName, geoPoint, maxDistance, minDistance){
      if(!this.query[columnName]){
          this.query[columnName] = {};
          this.query[columnName]['$near'] = {
              '$geometry': { coordinates: geoPoint['document'].coordinates, type:'Point'},
              '$maxDistance': maxDistance,
              '$minDistance': minDistance
          };
      }
  };
  
  //GeoPoint geoWithin query
  CB.CloudQuery.prototype.geoWithin = function(columnName, geoPoint, radius){
  
      if(!radius){
          var coordinates = [];
          //extracting coordinates from each CloudGeoPoint Object
          if (Object.prototype.toString.call(geoPoint) === '[object Array]') {
              for(i=0; i < geoPoint.length; i++){
                  if (geoPoint[i]['document'].hasOwnProperty('coordinates')) {
                      coordinates[i] = geoPoint[i]['document']['coordinates'];
                  }
              }
          }else{
              throw 'Invalid Parameter, coordinates should be an array of CloudGeoPoint Object';
          }
          //2dSphere needs first and last coordinates to be same for polygon type
          //eg. for Triangle four coordinates need to pass, three points of triangle and fourth one should be same as first one
          coordinates[coordinates.length] = coordinates[0];
          var type = 'Polygon';
          if(!this.query[columnName]){
              this.query[columnName] = {};
              this.query[columnName]['$geoWithin'] = {};
              this.query[columnName]['$geoWithin']['$geometry'] = {
                  'type': type,
                  'coordinates': [ coordinates ]
              };
          }
      }else{
          if(!this.query[columnName]){
              this.query[columnName] = {};
              this.query[columnName]['$geoWithin'] = {
                  '$centerSphere': [ geoPoint['document']['coordinates'], radius/3963.2 ]
              };
          }
      }
  };
  
  CB.CloudQuery.prototype.count = function(callback) {
      if (!CB.appId) {
          throw "CB.appId is null.";
      }
      if (!this.tableName) {
          throw "TableName is null.";
      }
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      var thisObj = this;
      var params=JSON.stringify({
          query: thisObj.query,
          limit: thisObj.limit,
          skip: thisObj.skip,
          key: CB.appKey
      });
      var url = CB.apiUrl + "/data/" + CB.appId + "/" + thisObj.tableName + '/count';
  
      CB._request('POST',url,params).then(function(response){
          response = parseInt(response);
          if (callback) {
              callback.success(response);
          } else {
              def.resolve(response);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  
  
  };
  
  CB.CloudQuery.prototype.distinct = function(keys, callback) {
  
  
      if(keys === 'id'){
          keys = '_id';
      }
  
      if (!CB.appId) {
          throw "CB.appId is null.";
      }
      if (!this.tableName) {
          throw "TableName is null.";
      }
      if (Object.prototype.toString.call(keys) !== '[object Array]' && keys.length <= 0) {
          throw "keys should be array";
      }
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      var thisObj = this;
      
      var params=JSON.stringify({
          onKey: keys,
          query: thisObj.query,
          select: thisObj.select,
          sort: thisObj.sort,
          limit: thisObj.limit,
          skip: thisObj.skip,
          key: CB.appKey
      });
      url = CB.apiUrl + "/data/" + CB.appId + "/" + thisObj.tableName + '/distinct';
  
      CB._request('POST',url,params).then(function(response){
          var object = CB.fromJSON(JSON.parse(response));
          if (callback) {
              callback.success(object);
          } else {
              def.resolve(object);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  CB.CloudQuery.prototype.find = function(callback) { //find the document(s) matching the given query
      if (!CB.appId) {
          throw "CB.appId is null.";
      }
      if (!this.tableName) {
          throw "TableName is null.";
      }
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      var thisObj = this;
  
      var xmlhttp=CB._loadXml();
      var params=JSON.stringify({
          query: thisObj.query,
          select: thisObj.select,
          sort: thisObj.sort,
          limit: thisObj.limit,
          skip: thisObj.skip,
          key: CB.appKey
      });
  
      url = CB.apiUrl + "/data/" + CB.appId + "/" + thisObj.tableName + '/find';
  
      CB._request('POST',url,params).then(function(response){
          var object = CB.fromJSON(JSON.parse(response));
          if (callback) {
              callback.success(object);
          } else {
              def.resolve(object);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
  
      if (!callback) {
          return def;
      }
  };
  
  CB.CloudQuery.prototype.get = function(objectId,callback){
      var query = new CB.CloudQuery(this.tableName);
      return query.findById(objectId,callback);
  };
  
  CB.CloudQuery.prototype.findById = function(objectId, callback) { //find the document(s) matching the given query
      
      var thisObj = this;
  
      if (!CB.appId) {
          throw "CB.appId is null.";
      }
      if (!this.tableName) {
          throw "TableName is null.";
      }
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      if(thisObj.skip && !thisObj.skip !== 0){
          throw "You cannot use skip and find object by Id in the same query";
      }
  
      if(thisObj.limit && thisObj.limit === 0){
          throw "You cannot use limit and find object by Id in the same query";
      }
  
      if(thisObj.sort && Object.getOwnPropertyNames(thisObj.sort).length > 0){
          throw "You cannot use sort and find object by Id in the same query";
      }
  
      thisObj.equalTo('id',objectId);
  
      var params=JSON.stringify({
          query: thisObj.query,
          select: thisObj.select,
          key: CB.appKey,
          limit : 1,
          skip : 0,
          sort : {}
      });
  
      var url = CB.apiUrl + "/data/" + CB.appId + "/" + thisObj.tableName + '/find';
  
      CB._request('POST',url,params).then(function(response){
          response = JSON.parse(response);
          if (Object.prototype.toString.call(response) === '[object Array]') {
              response = response[0];
          }
          if (callback) {
              callback.success(CB.fromJSON(response));
          } else {
              def.resolve(CB.fromJSON(response));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  CB.CloudQuery.prototype.findOne = function(callback) { //find a single document matching the given query
      if (!CB.appId) {
          throw "CB.appId is null.";
      }
      if (!this.tableName) {
          throw "TableName is null.";
      }
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      var params=JSON.stringify({
          query: this.query,
          select: this.select,
          sort: this.sort,
          skip: this.skip,
          key: CB.appKey
      });
      url = CB.apiUrl + "/data/" + CB.appId + "/" + this.tableName + '/findOne';
  
      CB._request('POST',url,params).then(function(response){
          var object = CB.fromJSON(JSON.parse(response));
          if (callback) {
              callback.success(object);
          } else {
              def.resolve(object);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  
  CB.CloudQuery._validateQuery = function(cloudObject, query){
      //validate query. 
     for(var key in query){
          
          if(query[key]){
              var value = query[key];
              if(typeof value === 'object'){
  
                  if(key === '$or'){
                      if(query[key].length>0){
                          var isTrue = false;
                          for(var i=0;i<query[key].length;i++){
                              if(CB.CloudQuery._validateQuery(cloudObject,query[key][i])){
                                  isTrue = true;
                                  break;
                              }
                          }
  
                          if(!isTrue){
                              return false;
                          }
                      }
                  }else{
  
                          for(var objectKeys in value){
                               //not equalTo query
                              if(objectKeys === '$ne'){
                                  if(cloudObject.get(key) === query[key]['$ne']){
                                      return false;
                                  }
                              }
  
                              //greater than
                              if(objectKeys === '$gt'){
                                  if(cloudObject.get(key) <= query[key]['$gt']){
                                      return false;
                                  }
                              }
  
                              //less than
                              if(objectKeys === '$lt'){
                                  if(cloudObject.get(key) >= query[key]['$lt']){
                                      return false;
                                  }
                              }
  
                              //greater than and equalTo. 
                              if(objectKeys === '$gte'){
                                  if(cloudObject.get(key) < query[key]['$gte']){
                                      return false;
                                  }
                              }
  
  
                              //less than and equalTo. 
                              if(objectKeys === '$lte'){
                                  if(cloudObject.get(key) > query[key]['$lte']){
                                      return false;
                                  }
                              }
  
                              //exists 
                              if(objectKeys === '$exists'){
                                  if(query[key][objectKeys] && cloudObject.get(key)){
                                      //do nothing.
                                  }else if(query[key][objectKeys]!==false){
                                      return false;
                                  }
                              }
  
                              //doesNot exists. 
                              if(objectKeys === '$exists'){
                                  if(!query[key][objectKeys] && cloudObject.get(key)){
                                      return false;
                                  }
                              }
  
                              //startsWith. 
                              if(objectKeys === '$regex'){
  
                                  var reg = new RegExp(query[key][objectKeys]);
  
                                  if(!query[key]['$options'] ){
                                      if(!reg.test(cloudObject.get(key))) //test actial regex. 
                                          return false;
                                  }else{
                                      if(query[key]['$options']==='im'){ //test starts with.
                                           //starts with.
                                          var value = trimStart('^', query[key][objectKeys]);
                                          if(cloudObject.get(key).indexOf(value)!==0)
                                              return false;
                                          }
                                  }
  
                              }
  
  
                              //containedIn. 
                              if(objectKeys === '$in'){
  
                                  if(query[key][objectKeys]){
                                      var arr =  query[key][objectKeys];
                                      var value = null;
                                      if(key.indexOf('.')>-1){ //for CloudObjects
                                          value = cloudObject.get(key.substr(0,key.indexOf('.')));
                                      }else{
                                          value = cloudObject.get(key);
                                      }
  
                                      if( Object.prototype.toString.call( value ) === '[object Array]' ) {
                                          var exists = false;
                                          for(var i=0;i<value.length;i++){
                                              if(value[i] instanceof CB.CloudObject){
                                                  if(arr.indexOf(value[i].id)>-1){
                                                      exists = true;
                                                      break;
                                                  }
                                              }else{
                                                  if(arr.indexOf(value[i])>-1){
                                                      exists = true;
                                                      break;
                                                  }
                                              }
                                             
                                          }
  
                                          if(!exists){
                                              return false;
                                          }
  
                                      }else{
                                          //if the element is not in the array then return false;
                                          if(arr.indexOf(value)===-1)
                                              return false;
                                      }
  
                                  }
                              }
  
                              //doesNot containedIn. 
                              if(objectKeys === '$nin'){
                                  if(query[key][objectKeys]){
                                      var arr =  query[key][objectKeys];
                                      var value = null;
                                      if(key.indexOf('.')>-1){ //for CloudObjects
                                          value = cloudObject.get(key.substr(0,key.indexOf('.')));
                                      }else{
                                          value = cloudObject.get(key);
                                      }
  
                                      if( Object.prototype.toString.call( value ) === '[object Array]' ) {
                                          var exists = false;
                                          for(var i=0;i<value.length;i++){
                                              if(value[i] instanceof CB.CloudObject){
                                                  if(arr.indexOf(value[i].id)!==-1){
                                                      exists = true;
                                                      break;
                                                  }
                                              }else{
                                                  if(arr.indexOf(value[i])!==-1){
                                                      exists = true;
                                                      break;
                                                  }
                                              }
                                              
                                          }
                                          
                                          if(exists){
                                              return false;
                                          }
  
                                      }else{
                                          //if the element is not in the array then return false;
                                          if(arr.indexOf(value)!==-1)
                                              return false;
                                      }
  
                                  }
                              }
  
                              //containsAll. 
                               if(objectKeys === '$all'){
                                  if(query[key][objectKeys]){
                                      var arr =  query[key][objectKeys];
                                      var value = null;
                                      if(key.indexOf('.')>-1){ //for CloudObjects
                                          value = cloudObject.get(key.substr(0,key.indexOf('.')));
                                      }else{
                                          value = cloudObject.get(key);
                                      }
  
                                      if( Object.prototype.toString.call( value ) === '[object Array]' ) {
                                          for(var i=0;i<value.length;i++){
                                              if(value[i] instanceof CB.CloudObject){
                                                  if(arr.indexOf(value[i].id)===-1){
                                                      return false;
                                                  }
                                              }else{
                                                  if(arr.indexOf(value[i])===-1){
                                                      return false;
                                                  }
                                              }
                                          }
                                      }else{
                                          //if the element is not in the array then return false;
                                          if(arr.indexOf(value)===-1)
                                              return false;
                                      }
  
                                  }
                              }
                          }
                      
                  }
              }else{
                  //it might be a plain equalTo query. 
                  if(key.indexOf('.')!==-1){ // for keys with "key._id" - This is for CloudObjects.
                      var temp = key.substring(0, key.indexOf('.'));
                      if(!cloudObject.get(temp)){
                          return false;
                      }
  
                      if(cloudObject.get(temp).id !== query[key]){
                          return false;
                      }
                  }else{
                      if(cloudObject.get(key) !== query[key]){
                          return false;
                      }
                  }
                  
              }
          }
          
     }
  
     return true;
  };
  
  
  
  
  
  CB.SearchFilter = function(){
  
      this.bool = {};
      this.bool.must = []; //and
      this.bool.should = []; //or
      this.bool.must_not = []; //not
      this.$include = []; //include
  };
  
  
  CB.SearchFilter.prototype.notEqualTo = function(columnName, data) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
      //data can bean array too!
      var term = {};
      if (data instanceof Array) {
          term.terms = {};
          term.terms[columnName] = data;
      } else {
          term.term = {};
          term.term[columnName] = data;
      }
  
      this.bool.must_not.push(term);
  
      return this;
  
  };
  
  CB.SearchFilter.prototype.equalTo = function(columnName, data) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
      var term = {};
      if (data instanceof Array) {
          term.terms = {};
          term.terms[columnName] = data;
      } else {
          if(data !== null) {
              if (data.constructor === CB.CloudObject) {
                  data = data.get('id');
                  term.nested = {};
                  term.nested.path = columnName;
                  term.nested.filter = {};
                  term.nested.filter.term = {};
                  term.nested.filter.term[columnName+'._id'] = data;
              }else{
                  term.term = {};
                  term.term[columnName] = data;
              }
          }else{
              term.term[columnName] = data;
          }
      }
  
      this.bool.must.push(term);
  
      return this;
  };
  
  CB.SearchFilter.prototype.exists = function(columnName) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
      var obj = {};
      obj.exists = {};
      obj.exists.field = columnName;
  
      this.bool.must.push(obj);
  
      return this;
  };
  
  CB.SearchFilter.prototype.doesNotExist = function(columnName) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
      var obj = {};
      obj.missing = {};
      obj.missing.field = columnName;
  
      this.bool.must.push(obj);
  
      return this;
  };
  
  CB.SearchFilter.prototype.greaterThanOrEqual = function(columnName, data) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
      var obj = {};
      obj.range = {};
      obj.range[columnName] = {};
      obj.range[columnName]['gte'] = data;
  
      this.bool.must.push(obj);
  
      return this;
  };
  
  CB.SearchFilter.prototype.greaterThan = function(columnName, data) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
      var obj = {};
      obj.range = {};
      obj.range[columnName] = {};
      obj.range[columnName]['gt'] = data;
  
      this.bool.must.push(obj);
  
      return this;
  };
  
  CB.SearchFilter.prototype.lessThan = function(columnName, data) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
      var obj = {};
      obj.range = {};
      obj.range[columnName] = {};
      obj.range[columnName]['lt'] = data;
  
      this.bool.must.push(obj);
  
      return this;
  };
  
  CB.SearchFilter.prototype.lessthanOrEqual = function(columnName, data) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
      var obj = {};
      obj.range = {};
      obj.range[columnName] = {};
      obj.range[columnName]['lte'] = data;
  
      this.bool.must.push(obj);
  
      return this;
  };
  
  CB.SearchFilter.prototype.near = function(columnName,geoPoint,distance){
  
      var obj = {};
      obj.geo_distance = {};
  
      //distance is in meters here in accordance with what we have in Mongo
  
      obj.geo_distance.distance = distance.toString() + ' m';
      obj.geo_distance[columnName] = geoPoint.document.coordinates;
  
      this.bool.must.push(obj);
  };
  
  //And logical function. 
  CB.SearchFilter.prototype.and = function(searchFilter) {
  
      if(searchFilter.$include.length>0){
          throw "You cannot have an include over AND. Have an CloudSearch Include over parent SearchFilter instead.";
      }
  
      delete searchFilter.$include;
  
      if(!searchFilter instanceof CB.SearchFilter){
          throw "data should be of type CB.SearchFilter";
      }
  
      this.bool.must.push(searchFilter);
  
      return this;
  };
  
  //OR Logical function
  CB.SearchFilter.prototype.or = function(searchFilter) {
  
      if(searchFilter.$include.length>0){
          throw "You cannot have an include over OR. Have an CloudSearch Include over parent SearchFilter instead.";
      }
  
      delete searchFilter.$include;
  
      if(!searchFilter instanceof CB.SearchFilter){
          throw "data should be of type CB.SearchFilter";
      }
  
      this.bool.should.push(searchFilter);
  
      return this;
  };
  
  
  //NOT logical function
  CB.SearchFilter.prototype.not = function(searchFilter) {
  
      if(searchFilter.$include.length>0){
          throw "You cannot have an include over NOT. Have an CloudSearch Include over parent SearchFilter instead.";
      }
  
      delete searchFilter.$include;
  
     if(!searchFilter instanceof CB.SearchFilter){
          throw "data should be of type CB.SearchFilter";
     }
  
     this.bool.must_not.push(searchFilter);
  
     return this;
  };
  
  CB.SearchFilter.prototype.include = function (columnName) {
      if (columnName === 'id')
          columnName = '_' + columnName;
  
      this.$include.push(columnName);
  
      return this;
  };
  
  
  /* This is Search Query*/
  
  CB.SearchQuery = function(){
      this.bool = {};
      this.bool.must = []; //and
      this.bool.should = []; //or
      this.bool.must_not = []; //not
  };
  
  CB.SearchQuery.prototype._buildSearchPhrase = function(columns, query, slop, boost) {
  
      var obj = this._buildSearchOn(columns, query, null, null,null,boost);
  
       if (columns instanceof Array) {
          obj.multi_match.type = 'phrase';
          if(slop){
              obj.multi_match.slop = slop;
          }
       } else {
          obj.match[columns].type = 'phrase';
          if(slop){
              obj.match[columns].slop = slop;
          }
       }
  
       return obj;
  
  }
  
  
  CB.SearchQuery.prototype._buildBestColumns = function(columns, query, fuzziness, operator, match_percent, boost) {
  
      var obj = this._buildSearchOn(columns, query, fuzziness, operator, match_percent, boost);
  
       if (columns instanceof Array) {
          obj.multi_match.type = 'best_fields';
       } else {
          obj.match[columns].type = 'best_fields';
       }
  
       return obj;
  };
  
  CB.SearchQuery.prototype._buildMostColumns = function(columns, query, fuzziness,  operator, match_percent, boost) {
  
      var obj = this._buildSearchOn(columns, query, fuzziness, operator, match_percent, boost);
  
       if (columns instanceof Array) {
          obj.multi_match.type = 'most_fields';
       } else {
          obj.match[columns].type = 'most_fields';
       }
  
       return obj;
  };
  
  CB.SearchQuery.prototype._buildSearchOn = function(columns, query, fuzziness, operator, match_percent, boost) {
  
      var obj = {};
  
          if (columns instanceof Array) {
              //if columns is an array.
              obj.multi_match = {};
              obj.multi_match.query = query;
              obj.multi_match.fields = columns;
              
              if (operator) {
                  obj.multi_match.operator = operator;
              } 
  
              if(match_percent){
                  obj.multi_match.minimum_should_match = match_percent;
              }
              
              if(boost){
                  obj.multi_match.boost = boost;
              }
  
              if(fuzziness){
                  obj.multi_match.fuzziness = fuzziness;
              }
  
          } else {
  
              obj.match = {};
              obj.match[columns] = {};
              obj.match[columns].query = query;
              
              if (operator) {
                  obj.match[columns].operator = operator;
              }
  
              if(match_percent){
                  obj.match[columns].minimum_should_match = match_percent;
              }
  
              if(boost){
                  obj.match[columns].boost = boost;
              }
  
              if(fuzziness){
                  obj.match[columns].fuzziness = fuzziness;
              }
          }
  
          return obj;
  
  }
  
  CB.SearchQuery.prototype.searchOn = function(columns, query, fuzziness, all_words, match_percent, priority) {
  
      //this is actually 'operator'
      if(all_words){
          all_words='and';
      }
          
      var obj = this._buildSearchOn(columns,query, fuzziness,all_words,match_percent,priority);
      //save in query 'and' clause.
      this.bool.should.push(obj); 
  
      return this;
      
  };
  
  CB.SearchQuery.prototype.phrase = function(columns, query,fuzziness, priority) {
  
          
      var obj = this._buildSearchPhrase(columns, query,fuzziness, priority);
      //save in query 'and' clause.
      this.bool.should.push(obj); 
  
      return this;
  };
  
  CB.SearchQuery.prototype.bestColumns = function(columns, query, fuzziness, all_words, match_percent, priority) {
  
      if(!columns instanceof Array || columns.length<2)
             throw "There should be more than one columns in-order to use this function";
  
      if(all_words){
          all_words='and';
      }
  
      var obj = this._buildBestColumns(columns, query, fuzziness, all_words, match_percent, priority);
      //save in query 'and' clause.
      this.bool.should.push(obj); 
  
      return this;
  };
  
  CB.SearchQuery.prototype.mostColumns = function(columns, query, fuzziness, all_words, match_percent, priority) {
  
      if(!columns instanceof Array || columns.length<2)
             throw "There should be more than one columns in-order to use this function";
  
      if(all_words){
          all_words='and';
      }
  
      var obj = this._buildMostColumns(columns, query, fuzziness, all_words, match_percent, priority);
      //save in query 'and' clause.
      this.bool.should.push(obj); 
  
      return this;
  };
  
  CB.SearchQuery.prototype.startsWith = function(column, value, priority) {
  
      var obj = {};
      obj.prefix = {};
      obj.prefix[column] = {};
      obj.prefix[column].value = value;
      
      if(priority){
          obj.prefix[column].boost = priority;
      }
  
      this.bool.must.push(obj);
  };
  
  CB.SearchQuery.prototype.wildcard = function(column, value, priority) {
  
      var obj = {};
      obj.wildcard = {};
      obj.wildcard[column] = {};
      obj.wildcard[column].value = value;
      
      if(priority){
          obj.wildcard[column].boost = priority;
      }
  
      this.bool.should.push(obj);
  };
  
  
  
  CB.SearchQuery.prototype.regexp = function(column, value, priority) {
  
      var obj = {};
      obj.regexp = {};
      obj.regexp[column] = {};
      obj.regexp[column].value = value;
      
      if(priority){
          obj.regexp[column].boost = priority;
      }
  
      this.bool.must.push(obj);
  };
  
  //And logical function. 
  CB.SearchQuery.prototype.and = function(searchQuery) {
  
      if(!searchQuery instanceof CB.SearchQuery){
          throw "data should be of type CB.SearchQuery";
      }
  
      this.bool.must.push(searchQuery);
  };
  
  //OR Logical function
  CB.SearchQuery.prototype.or = function(searchQuery) {
  
      if(!searchQuery instanceof CB.SearchQuery){
          throw "data should be of type CB.SearchQuery";
      }
  
      this.bool.should.push(searchQuery);
  };
  
  
  //NOT logical function
  CB.SearchQuery.prototype.not = function(searchQuery) {
  
      if(!searchQuery instanceof CB.SearchQuery){
          throw "data should be of type CB.SearchQuery";
      }
  
      this.bool.must_not.push(searchQuery);
  };
  
  
  /* This is CloudSearch Function, 
  
  Params : 
  CollectionNames : string or string[] of collection names. (Required)
  SearchQuery : CB.SearchQuery Object (optional)
  SearchFilter : CB.SearchFilter Object (optional)
  */
  
  CB.CloudSearch = function(collectionNames, searchQuery, searchFilter) {
  
      this.collectionNames = collectionNames;
      //make a filterd query in elastic search.
  
      this.query = {};
      this.query.filtered = {};
      
      
      if(searchQuery){
          this.query.filtered.query = searchQuery;
      }else{
          this.query.filtered.query = {};
      }
  
      if(searchFilter){
          this.query.filtered.filter = searchFilter;
      }else{
          this.query.filtered.filter = {};
      }
  
      this.from = 0; //this is skip in usual terms.
      this.size = 10; //this is take in usual terms.
      this.sort = [];
  };
  
  Object.defineProperty(CB.CloudSearch.prototype, 'searchFilter', {
      get: function() {
          return this.query.filtered.filter;
      },
      set: function(searchFilter) {
          this.query.filtered.filter = searchFilter;
      }
  });
  
  
  Object.defineProperty(CB.CloudSearch.prototype, 'searchQuery', {
      get: function() {
          return this.query.filtered.query;
      },
      set: function(searchQuery) {
          this.query.filtered.query = searchQuery;
      }
  });
  
  CB.CloudSearch.prototype.setSkip = function(data) {
      this.from = data;
      return this;
  };
  
  CB.CloudSearch.prototype.setLimit = function(data) {
      this.size = data;
      return this;
  };
  
  CB.CloudSearch.prototype.orderByAsc = function(columnName) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
  
      var obj = {};
      obj[columnName] = {};
      obj[columnName]['order'] = 'asc';
      this.sort.push(obj);
  
      return this;
  };
  
  CB.CloudSearch.prototype.orderByDesc = function(columnName) {
  
      if (columnName === 'id' || columnName === 'isSearchable' || columnName === 'expires')
          columnName = '_' + columnName;
  
      var obj = {};
      obj[columnName] = {};
      obj[columnName]['order'] = 'desc';
      this.sort.push(obj);
  
      return this;
  };
  
  
  CB.CloudSearch.prototype.search = function(callback) {
  
      CB._validate();
  
      var collectionName = null;
  
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      if (this.collectionNames instanceof Array) {
          collectionName = this.collectionNames.join(',');
      } else {
          collectionName = this.collectionNames;
      }
  
  
      var params=JSON.stringify({
          collectionName: collectionName,
          query: this.query,
          sort: this.sort,
          limit: this.size,
          skip: this.from,
          key: CB.appKey
      });
  
      var url = CB.apiUrl + "/data/" + CB.appId +'/'+ collectionName + "/search" ;
  
      CB._request('POST',url,params).then(function(response){
          var object = CB.fromJSON(JSON.parse(response));
          if (callback) {
              callback.success(object);
          } else {
              def.resolve(object);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
      if(!callback) {
          return def;
      }
  };
  
  /*
   CloudRole
   */
  CB.CloudRole = CB.CloudRole || function(roleName) { //calling the constructor.
      if (!this.document) this.document = {};
      this.document._tableName = 'Role';
      this.document._type = 'role';
      this.document.name = roleName;
      this.document.expires = null;
      this.document.ACL = new CB.ACL();
      this.document.expires = null;
      this.document._isModified = true;
      this.document._modifiedColumns = ['createdAt','updatedAt','ACL','name','expires'];
  };
  
  CB.CloudRole.prototype = Object.create(CB.CloudObject.prototype);
  
  Object.defineProperty(CB.CloudRole.prototype, 'name', {
      get: function() {
          return this.document.name;
      },
      set: function(name) {
          this.document.name = name;
          CB._modified(this,name);
      }
  });
  
  /*
   CloudFiles
   */
  
  CB.CloudFile = CB.CloudFile || function(file,data,type) {
  
      if (Object.prototype.toString.call(file) === '[object File]' || Object.prototype.toString.call(file) === '[object Blob]' ) {
  
          this.fileObj = file;
          this.document = {
              _id: null,
              _type: 'file',
              ACL: new CB.ACL(),
              name: (file && file.name && file.name !== "") ? file.name : 'unknown',
              size: file.size,
              url: null,
              expires: null,
              contentType : (typeof file.type !== "undefined" && file.type !== "") ? file.type : 'unknown'
          };
  
      } else if(typeof file === "string") {
          var regexp = RegExp("https?:\/\/(?:www\.|(?!www))[^\s\.]+\.[^\s]{2,}|www\.[^\s]+\.[^\s]{2,}");
          if (regexp.test(file)) {
              this.document = {
                  _id: null,
                  _type: 'file',
                  ACL: new CB.ACL(),
                  name: '',
                  size: '',
                  url: file,
                  expires: null,
                  contentType : ''
              };
          } else{
              if(data){
                  this.data = data;
                  if(!type){
                      type = file.split('.')[file.split('.').length-1];
                  }
                  this.document = {
                      _id: null,
                      _type: 'file',
                      ACL: new CB.ACL(),
                      name: file,
                      size: '',
                      url: null,
                      expires: null,
                      contentType : type
                  };
              }else{
                  this.document = {
                      _id: file,
                      _type: 'file'
                  }
              }
          }
      }
  };
  
  CB.CloudFile.prototype = Object.create(CB.CloudObject.prototype);
  
  Object.defineProperty(CB.CloudFile.prototype, 'type', {
      get: function() {
          return this.document.contentType;
      },
      set: function(type) {
          this.document.contentType = type;
      }
  });
  
  Object.defineProperty(CB.CloudFile.prototype, 'url', {
      get: function() {
          return this.document.url;
      },
      set: function(url) {
          this.document.url = url;
      }
  });
  
  Object.defineProperty(CB.CloudFile.prototype, 'size', {
      get: function() {
          return this.document.size;
      },
      set: function(size) {
          this.document.size = size;
      }
  });
  
  Object.defineProperty(CB.CloudFile.prototype, 'name', {
      get: function() {
          return this.document.name;
      },
      set: function(name) {
          this.document.name = name;
      }
  });
  
  /**
   * Uploads File
   *
   * @param callback
   * @returns {*}
   */
  
  CB.CloudFile.prototype.save = function(callback) {
  
      var def;
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var thisObj = this;
  
      if(!this.fileObj && !this.data)
          throw "You cannot save a file which is null";
  
      if(!this.data) {
          var params = new FormData();
          params.append("fileToUpload", this.fileObj);
          params.append("key", CB.appKey);
          params.append("fileObj",JSON.stringify(CB.toJSON(thisObj)));
          var url = CB.apiUrl + '/file/' + CB.appId;
  
          var uploadProgressCallback = null;
          
          if(callback && callback.uploadProgress){
              uploadProgressCallback = callback.uploadProgress;
          }
  
          CB._request('POST',url,params,false,true, uploadProgressCallback).then(function(response){
              thisObj.document = JSON.parse(response);
              if (callback) {
                  callback.success(thisObj);
              } else {
                  def.resolve(thisObj);
              }
          },function(err){
              if(callback){
                  callback.error(err);
              }else {
                  def.reject(err);
              }
          });
      }else{
          var data = this.data;
          var params=JSON.stringify({
              data: data,
              fileObj:CB.toJSON(this),
              key: CB.appKey
          });
          url = CB.apiUrl + '/file/' + CB.appId;
          var uploadProgressCallback = null;
  
          if(callback && callback.uploadProgress){
              uploadProgressCallback = callback.uploadProgress;
          }
  
          CB._request('POST',url,params,null,null,uploadProgressCallback).then(function(response){
              thisObj.document = JSON.parse(response);
              delete thisObj.data;
              if (callback) {
                  callback.success(thisObj);
              } else {
                  def.resolve(thisObj);
              }
          },function(err){
              if(callback){
                  callback.error(err);
              }else {
                  def.reject(err);
              }
          });
      }
  
      if (!callback) {
          return def;
      }
  };
  
  /**
   * Removes a file from Database.
   *
   * @param callback
   * @returns {*}
   */
  
  
  CB.CloudFile.prototype.delete = function(callback) {
      var def;
  
      if(!this.url) {
          throw "You cannot delete a file which does not have an URL";
      }
      if (!callback) {
          def = new CB.Promise();
      }
      var thisObj = this;
  
      var params=JSON.stringify({
          fileObj: CB.toJSON(thisObj),
          key: CB.appKey,
          method:"PUT"
      });
      var url = CB.apiUrl+'/file/' + CB.appId + '/' + this.document._id ;
  
      CB._request('PUT',url,params).then(function(response){
          thisObj.url = null;
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
  
      if (!callback) {
          return def;
      }
  };
  
  
  CB.CloudFile.prototype.getFileContent = function(callback){
  
      var def;
  
      if(!this.url) {
          throw "URL is null. Fetch this file object first using fetch()";
      }
      if (!callback) {
          def = new CB.Promise();
      }
  
      var params=JSON.stringify({
          key: CB.appKey
      });
      var url = this.url;
  
      CB._request('GET',url,params).then(function(response){
          if (callback) {
              callback.success(response);
          } else {
              def.resolve(response);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  
  /*
   *CloudGeoPoint
   */
  
  CB.CloudGeoPoint = CB.CloudGeoPoint || function(longitude , latitude) {
      if((!latitude && latitude!==0) || (!longitude && longitude!==0))
          throw "Latitude or Longitude is empty.";
  
      if(isNaN(latitude))
          throw "Latitude "+ latitude +" is not a number type.";
  
      if(isNaN(longitude))
          throw "Longitude "+ longitude+" is not a number type.";
  
      this.document = {};
      this.document._type = "point";
      this.document._isModified = true;
      //The default datum for an earth-like sphere is WGS84. Coordinate-axis order is longitude, latitude.
      if((Number(latitude)>= -90 && Number(latitude)<=90)&&(Number(longitude)>= -180 && Number(longitude)<=180)) {
          this.document.coordinates = [Number(longitude), Number(latitude)];
          this.document.latitude = Number(latitude);
          this.document.longitude = Number(longitude);
      }
      else{
          throw "latitude and longitudes are not in range";
      }
  };
  
  Object.defineProperty(CB.CloudGeoPoint.prototype, 'latitude', {
      get: function() {
          return this.document.coordinates[1];
      },
      set: function(latitude) {
          if(Number(latitude)>= -90 && Number(latitude)<=90) {
              this.document.latitude = Number(latitude);
              this.document.coordinates[1] = Number(latitude);
              this.document._isModified = true;
          }
          else
              throw "Latitude is not in Range";
      }
  });
  
  Object.defineProperty(CB.CloudGeoPoint.prototype, 'longitude', {
      get: function() {
          return this.document.coordinates[0];
      },
      set: function(longitude) {
          if(Number(longitude)>= -180 && Number(longitude)<=180) {
              this.document.longitude = Number(longitude);
              this.document.coordinates[0] = Number(longitude);
              this.document._isModified = true;
          }
          else
              throw "Longitude is not in Range";
      }
  });
  
  CB.CloudGeoPoint.prototype.get = function(name) { //for getting data of a particular column
  
      return this.document[name];
  };
  
  CB.CloudGeoPoint.prototype.set = function(name,value) { //for getting data of a particular column
  
      if(name === 'latitude') {
          if(Number(value)>= -90 && Number(value)<=90) {
              this.document.latitude = Number(value);
              this.document.coordinates[1] = Number(value);
              this.document._isModified = true;
          }
          else
              throw "Latitude is not in Range";
      }
      else {
          if(Number(value)>= -180 && Number(value)<=180) {
              this.document.longitude = Number(value);
              this.document.coordinates[0] = Number(value);
              this.document._isModified = true;
          }
          else
              throw "Latitude is not in Range";
      }
  };
  CB.CloudGeoPoint.prototype.distanceInKMs = function(point) {
  
      var earthRedius = 6371; //in Kilometer
      return earthRedius * greatCircleFormula(this, point);
  };
  
  CB.CloudGeoPoint.prototype.distanceInMiles = function(point){
  
      var earthRedius = 3959 // in Miles
      return earthRedius * greatCircleFormula(this, point);
  
  };
  
  CB.CloudGeoPoint.prototype.distanceInRadians = function(point){
  
      return greatCircleFormula(this, point);
  };
  
  function greatCircleFormula(thisObj, point){
  
      var dLat =(thisObj.document.coordinates[1] - point.document.coordinates[1]).toRad();
      var dLon = (thisObj.document.coordinates[0] - point.document.coordinates[0]).toRad();
      var lat1 = (point.document.coordinates[1]).toRad();
      var lat2 = (thisObj.document.coordinates[1]).toRad();
      var a = Math.sin(dLat/2) * Math.sin(dLat/2) + Math.sin(dLon/2) * Math.sin(dLon/2) * Math.cos(lat1) * Math.cos(lat2);
      var c = 2 * Math.atan2(Math.sqrt(a), Math.sqrt(1-a));
      return c;
  }
  
  if (typeof(Number.prototype.toRad) === "undefined") {
      Number.prototype.toRad = function() {
          return this * Math.PI / 180;
      }
  }
  
  /*
    CloudTable
   */
  
  CB.CloudTable = function(tableName){  //new table constructor
  
    CB._tableValidation(tableName);
    this.document = {};
    this.document.name = tableName;
    this.document.appId = CB.appId;
    this.document._type = 'table';
  
    if(tableName.toLowerCase() === "user") {
        this.document.type = "user";
        this.document.maxCount = 1;
    }
    else if(tableName.toLowerCase() === "role") {
        this.document.type = "role";
        this.document.maxCount = 1;
    }
    else if(tableName.toLowerCase() === "device") {
        this.document.type = "device";
        this.document.maxCount = 1;
    }
    else {
        this.document.type = "custom";
        this.document.maxCount = 9999;
    }
    this.document.columns = CB._defaultColumns(this.document.type);
  };
  
  Object.defineProperty(CB.CloudTable.prototype,'columns',{
      get: function(){
          return this.document.columns;
      }
  });
  
  Object.defineProperty(CB.CloudTable.prototype,'name',{
      get: function(){
          return this.document.name;
      },
      set: function(){
          throw "You can not rename a table";
      }
  });
  
  Object.defineProperty(CB.CloudTable.prototype,'id',{
      get: function(){
          return this.document._id;
      }
  });
  
  
  CB.CloudTable.prototype.addColumn = function(column){
      if(Object.prototype.toString.call(column) === '[object String]') {
          var obj = new CB.Column(column);
          column = obj;
      }
    if (Object.prototype.toString.call(column) === '[object Object]') {
      if(CB._columnValidation(column, this))
        this.document.columns.push(column);
  
    } else if (Object.prototype.toString.call(column) === '[object Array]') {
        for(var i=0; i<column.length; i++){
          if(CB._columnValidation(column[i], this))
            this.document.columns.push(column[i]);
        }
    }
  };
  
  CB.CloudTable.prototype.getColumn = function(columnName){
      if(Object.prototype.toString.call(columnName) !== '[object String]') {
          throw "Should enter a columnName";
      }
      var columns = this.document.columns;
      for(var i=0;i<columns.length;i++){
          if(columns[i].name === columnName)
              return columns[i];
      }
      throw "Column Does Not Exists";
  };
  
  CB.CloudTable.prototype.updateColumn = function(column){
      if (Object.prototype.toString.call(column) === '[object Object]') {
          if (CB._columnValidation(column, this)){
              var columns = this.document.columns;
              for(var i=0;i<columns.length;i++){
                  if(columns[i].name === column.name){
                      columns[i] = column;
                      this.document.columns = columns;
                      break;
                  }
              }
          }else{
              throw "Invalid Column";
          }
      }else{
          throw "Invalid Column";
      }
  
  };
  
  
  CB.CloudTable.prototype.deleteColumn = function(column){
      if(Object.prototype.toString.call(column) === '[object String]') {
          var obj = new CB.Column(column);
          column = obj;
      }
    if (Object.prototype.toString.call(column) === '[object Object]') {
          if(CB._columnValidation(column, this)){
              var arr = [];
              for(var i=0;i<this.columns.length;i++){
                  if(this.columns[i].name !== column.name)
                      arr.push(this.columns[i]);
              }
            this.document.columns = arr;
          }
  
    } else if (Object.prototype.toString.call(column) === '[object Array]') {
        var arr = [];
        for(var i=0; i<column.length; i++){
          if(CB._columnValidation(column[i], this)){
              for(var i=0;i<this.columns.length;i++){
                  if(this.columns[i].name !== column[i].name)
                      arr.push(this.columns[i]);
              }
              this.document.columns = arr;
          }
        }
    }
  };
  
  /**
   * Gets All the Tables from an App
   *
   * @param callback
   * @returns {*}
   */
  
  CB.CloudTable.getAll = function(callback){
    if (!CB.appId) {
        throw "CB.appId is null.";
    }
  
    var def;
    if (!callback) {
        def = new CB.Promise();
    }
  
    var params=JSON.stringify({
        key: CB.appKey
    });
  
    var url = CB.apiUrl+'/app/'+CB.appId +"/_getAll";
    CB._request('POST',url,params,true).then(function(response){
      response = JSON.parse(response);
      var obj = CB.fromJSON(response);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  }
  
  /**
   * Gets a table
   *
   * @param table
   *  It is the CloudTable object
   * @param callback
   * @returns {*}
   */
  
  
  CB.CloudTable.get = function(table, callback){
    if(Object.prototype.toString.call(table) === '[object String]') {
        var obj = new CB.CloudTable(table);
        table = obj;
    }
    if (Object.prototype.toString.call(table) === '[object Object]') {
      {
        if (!CB.appId) {
            throw "CB.appId is null.";
        }
  
        var def;
        if (!callback) {
            def = new CB.Promise();
        }
  
        var params=JSON.stringify({
            key: CB.appKey,
            appId: CB.appId
        });
  
        var url = CB.apiUrl + '/app/' + CB.appId + "/" + table.document.name;
        CB._request('POST',url,params,true).then(function(response){
            if(response === "null" || response === ""){
              obj = null;
          }else{
              response = JSON.parse(response);
              var obj = CB.fromJSON(response);
          }
            if (callback) {
                callback.success(obj);
            } else {
                def.resolve(obj);
            }
        },function(err){
            if(callback){
                callback.error(err);
            }else {
                def.reject(err);
            }
        });
        if (!callback) {
            return def;
        }
  
      }
    } else if (Object.prototype.toString.call(table) === '[object Array]') {
      throw "cannot fetch array of tables";
    }
  }
  
  
  /**
   * Deletes a table from database.
   *
   * @param table
   * @param callback
   * @returns {*}
   */
  
  CB.CloudTable.prototype.delete = function(callback){
      CB._validate();
  
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      var params=JSON.stringify({
          key: CB.appKey,
          name: this.name,
          method:"DELETE"
      });
  
      var thisObj = this;
  
      var url = CB.apiUrl + '/app/' + CB.appId + "/" +this.name;
  
      CB._request('PUT',url,params,true).then(function(response){
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  }
  
  /**
   * Saves a table
   *
   * @param callback
   * @returns {*}
   */
  
  CB.CloudTable.prototype.save = function(callback){
    var def;
    if (!callback) {
        def = new CB.Promise();
    }
    CB._validate();
    var thisObj = this;
    var params=JSON.stringify({
        key:CB.appKey,
        data:CB.toJSON(thisObj)
    });
  
    var thisObj = this;
  
    var url = CB.apiUrl +'/app/' + CB.appId + "/" + thisObj.document.name;
  
      CB._request('PUT',url,params,true).then(function(response){
        response = JSON.parse(response);
        thisObj = CB.fromJSON(response);
        if (callback) {
            callback.success(thisObj);
        } else {
            def.resolve(thisObj);
        }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
  
    if (!callback) {
        return def;
    }
  };
  
  
  
  
  /*
   Column.js
   */
  
  CB.Column = function(columnName, dataType, required, unique){
     this.document = {};
     if(columnName){
       CB._columnNameValidation(columnName);
       this.document.name = columnName;
       this.document._type = 'column';
     }
  
     if(dataType){
       CB._columnDataTypeValidation(dataType);
       this.document.dataType = dataType;
     }else{
       this.document.dataType = "Text";
     }
  
     if(typeof(required) === 'boolean'){
       this.document.required = required;
     }
     else{
       this.document.required = false;
     }
  
     if(typeof(unique) === 'boolean'){
       this.document.unique = unique;
     }
     else{
       this.document.unique = false;
     }
  
     if(dataType==="Text"){
       this.document.isSearchable = true;
     }  
  
     this.document.relatedTo = null;
     this.document.relationType = null;
  
     this.document.isDeletable = true;
     this.document.isEditable = true;
     this.document.isRenamable = false;
     this.document.editableByMasterKey = false; 
  };
  
  Object.defineProperty(CB.Column.prototype,'name',{
      get: function() {
          return this.document.name;
      },
      set: function(name) {
          this.document.name = name;
      }
  });
  
  Object.defineProperty(CB.Column.prototype,'dataType',{
      get: function() {
          return this.document.dataType;
      },
      set: function(dataType) {
          this.document.dataType = dataType;
      }
  });
  
  
  Object.defineProperty(CB.Column.prototype,'unique',{
      get: function() {
          return this.document.unique;
      },
      set: function(unique) {
          this.document.unique = unique;
      }
  });
  
  
  Object.defineProperty(CB.Column.prototype,'relatedTo',{
      get: function() {
          return this.document.relatedTo;
      },
      set: function(relatedTo) {
          this.document.relatedTo = relatedTo;
      }
  });
  
  Object.defineProperty(CB.Column.prototype,'required',{
      get: function() {
          return this.document.required;
      },
      set: function(required) {
          this.document.required = required;
      }
  });
  
  Object.defineProperty(CB.Column.prototype,'editableByMasterKey',{
      get: function() {
          return this.document.editableByMasterKey;
      },
      set: function(editableByMasterKey) {
          this.document.editableByMasterKey = editableByMasterKey;
      }
  });
  
  Object.defineProperty(CB.Column.prototype,'isSearchable',{
      get: function() {
          return this.document.isSearchable;
      },
      set: function(isSearchable) {
          this.document.isSearchable = isSearchable;
      }
  });
  
  /*
  CloudQueue
   */
  
  CB.CloudQueue = function(queueName,queueType){
  
      if(typeof queueName === 'undefined' || queueName == null){
          throw "Cannot create a queue with empty name";
      }
  
      this.document = {};
      this.document.ACL = new CB.ACL(); //ACL(s) of the document
      this.document._type = 'queue';
      this.document.expires = null;
      this.document.name = queueName;
      this.document.retry = null;
      this.document.subscribers = [];
      this.document.messages = [];
      
      if(queueType && queueType !== "push" && queueType !== "pull"){
          throw "Type can be push or pull";
      }
      if(queueType){
          this.document.queueType = queueType;
      }else{
          this.document.queueType = "pull";
      }
  };
  
  Object.defineProperty(CB.CloudQueue.prototype, 'retry', {
      get: function() {
          return this.document.retry;
      },
      set: function(retry) {
  
          if(this.queueType !== "push"){
              throw "Queue Type should be push to set this property";
          }
  
          this.document.retry = retry;
          CB._modified(this,'retry');
      }
  });
  
  Object.defineProperty(CB.CloudQueue.prototype, 'size', {
      get: function() {
          if(this.document.size)
              return this.document.size;
          else
              return 0;
      }
  });
  
  Object.defineProperty(CB.CloudQueue.prototype, 'name', {
      get: function() {
          return this.document.name;
      }
  });
  
  Object.defineProperty(CB.CloudQueue.prototype, 'subscribers', {
      get: function() {
          return this.document.subscribers;
      }
  });
  
  Object.defineProperty(CB.CloudQueue.prototype, 'type', {
      get: function() {
          return this.document.queueType;
      },
      set: function(queueType) {
          this.document.queueType = queueType;
          CB._modified(this,'queueType');
      }
  });
  
  Object.defineProperty(CB.CloudQueue.prototype, 'ACL', {
      get: function() {
          return this.document.ACL;
      },
      set: function(ACL) {
          this.document.ACL = ACL;
          CB._modified(this,'ACL');
      }
  });
  
  Object.defineProperty(CB.CloudQueue.prototype, 'id', {
      get: function() {
          return this.document._id;
      }
  });
  
  Object.defineProperty(CB.CloudQueue.prototype, 'createdAt', {
      get: function() {
          return this.document.createdAt;
      }
  });
  
  Object.defineProperty(CB.CloudQueue.prototype, 'updatedAt', {
      get: function() {
          return this.document.updatedAt;
      }
  });
  
  
  Object.defineProperty(CB.CloudQueue.prototype, 'expires', {
      get: function() {
          return this.document.expires;
      },
      set: function(expires) {
          this.document.expires = expires;
          CB._modified(this,'expires');
      }
  });
  
  CB.CloudQueue.prototype.addMessage = function(queueMessage, callback) {
  
      if(queueMessage == null)
          throw "Message cannot be null";
  
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var messages = [];
  
      if(queueMessage.constructor !== Array){
          messages.push(queueMessage);
      }else{
          messages = queueMessage;
      }
  
      for(var i=0;i<messages.length; i++){
          if(!(messages[i] instanceof CB.QueueMessage)){
              messages[i] = new CB.QueueMessage(messages[i]);
          }
      }
  
      this.document.messages = messages;
  
      //PUT TO SERVER.
      var thisObj = this;
  
      var xmlhttp = CB._loadXml();
  
      var params=JSON.stringify({
          document: CB.toJSON(thisObj),
          key: CB.appKey
      });
  
      var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name+'/message';
  
      CB._request('PUT',url,params).then(function(response){
          var messages = CB.fromJSON(JSON.parse(response));
          if (callback) {
              callback.success(messages);
          } else {
              def.resolve(messages);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.prototype.updateMessage = function(queueMessage, callback) {
  
      if(queueMessage == null)
          throw "Message cannot be null";
  
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var messages = [];
  
      if(queueMessage.constructor !== Array){
          if(!queueMessage.id){
              throw "Message cannot be updated because it has never been saved.";
          }else{
              messages.push(queueMessage);
          }
         
      }else{
           messages = queueMessage;
           for(var i=0;i<messages.length; i++){
              if(!(messages[i] instanceof CB.QueueMessage)){
                  throw "Message is not an instance of QueueMessage.";
              }
  
              if(!message[i].id){
                  throw "Message cannot be updated because it has never been saved.";
              }
          }
      }
  
      return this.addMessage(queueMessage,callback);
  };
  
  
  CB.CloudQueue.prototype.getMessage = function(count,callback) {
  
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      if(typeof count === 'object' && !callback ){
          callback = count;
          count = null;
      }
  
      if(!count)
          count=1;
  
      var thisObj = this;
  
      var xmlhttp = CB._loadXml();
  
      var params=JSON.stringify({
          count: count,
          key: CB.appKey
      });
  
      var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name+'/getMessage';
  
      CB._request('POST',url,params).then(function(response){
          
          if(!response || response===""){
              response = null;
          }
  
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response)));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response)));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  
  CB.CloudQueue.prototype.getAllMessages = function(callback) {
  
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      if(typeof count === 'object' && !callback ){
          callback = count;
          count = null;
      }
  
      
      var thisObj = this;
  
      var xmlhttp = CB._loadXml();
  
      var params=JSON.stringify({
          key: CB.appKey
      });
  
      var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name+'/messages';
  
      CB._request('POST',url,params).then(function(response){
          
          if(!response || response===""){
              response = null;
          }
  
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response)));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response)));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.prototype.getMessageById = function(id, callback) {
      var def;
  
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
  
      var params=JSON.stringify({
          key: CB.appKey
      });
  
      var url = CB.apiUrl + "/queue/" + CB.appId + '/'+this.document.name+'/message/'+id;
  
      CB._request('POST',url,params).then(function(response){
          
          if(!response || response === ""){
              response = null;
          }
  
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response)));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response)));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.prototype.get = function(callback) {
      var def;
      
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
  
      var thisObj = this;
  
      var params=JSON.stringify({       
          key: CB.appKey
      });
  
      var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name+'/';
  
      CB._request('POST',url,params).then(function(response){
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response),thisObj));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response),thisObj));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.prototype.create = function(callback) {
      var def;
      
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
  
      var thisObj = this;
  
      var params=JSON.stringify({       
          key: CB.appKey,
          document : CB.toJSON(thisObj)
      });
  
      var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name+'/create';
  
      CB._request('POST',url,params).then(function(response){
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response),thisObj));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response),thisObj));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.prototype.addSubscriber = function(url,callback) {
  
      var def;
  
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
  
      var tempSubscribers =  this.document.subscribers;
  
      this.document.subscribers = [];
  
      if(url.constructor === Array){
          for(var i=0;i<url.length;i++){
              this.document.subscribers.push(url[i]);
          }
      }else{
          this.document.subscribers.push(url);
      }
  
      var params=JSON.stringify({       
          key: CB.appKey,
          document : CB.toJSON(this)
      });
  
     var thisObj = this;
  
     var url = CB.apiUrl + '/queue/' + CB.appId + '/'+thisObj.document.name+'/subscriber/';
  
     CB._request('POST',url,params).then(function(response){
          thisObj = CB.fromJSON(JSON.parse(response),thisObj);
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          thisObj.document.subscribers = tempSubscribers;
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.prototype.removeSubscriber = function(url,callback) {
  
      var def;
  
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
  
      var tempSubscribers =  this.document.subscribers;
  
      this.document.subscribers = [];
  
      if(url.constructor === Array){
          for(var i=0;i<url.length;i++){
              this.document.subscribers.push(url[i]);
          }
      }else{
          this.document.subscribers.push(url);
      }
  
      var thisObj =this;
  
      var params=JSON.stringify({       
          key: CB.appKey,
          document : CB.toJSON(thisObj),
          method: "DELETE"
      });
  
  
     var url = CB.apiUrl + '/queue/' + CB.appId + '/'+thisObj.document.name+'/subscriber/';
  
     CB._request('PUT',url,params).then(function(response){
          thisObj = CB.fromJSON(JSON.parse(response),thisObj);
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          this.document.subscribers = tempSubscribers;
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
  };
  
  CB.CloudQueue.prototype.peekMessage = function(count, callback) {
  
      var def;
  
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      if(typeof count === 'object' && !callback ){
          callback = count;
          count = null;
      }
  
      if(!count)
          count=1; 
      
      var xmlhttp = CB._loadXml();
  
      var params=JSON.stringify({
          key: CB.appKey,
          count : count
      });
  
     var url = CB.apiUrl + "/queue/" + CB.appId + '/'+this.document.name+'/peekMessage';
  
     CB._request('POST',url,params).then(function(response){
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response)));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response)));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
  };
  
  CB.CloudQueue.prototype.delete = function(callback) {
      var def;
  
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
  
      var params=JSON.stringify({
          key: CB.appKey,
          document : CB.toJSON(this),
          method:"DELETE"
      });
  
     var thisObj = this;
  
     var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name;
  
     CB._request('PUT',url,params).then(function(response){
          thisObj = CB.fromJSON(JSON.parse(response),thisObj);
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.prototype.clear = function(callback) {
      var def;
  
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
  
      var params=JSON.stringify({
          key: CB.appKey,
          document : CB.toJSON(this),
          method: "DELETE"
      });
  
     var thisObj = this;
  
     var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name+"/clear";
  
     CB._request('PUT',url,params).then(function(response){
          thisObj = CB.fromJSON(JSON.parse(response),thisObj);
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.prototype.refreshMessageTimeout = function(id,timeout ,callback) {
      var def;
  
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      if(!id)
          throw "Message Id cannot be null";
  
      if(id instanceof CB.QueueMessage){
          if(!id.id){
              throw "Queue Message should have an id.";
          }else{
              id = id.id;
          }
      }
  
      if(!callback && (timeout.success || timeout.error)){
          callback = timeout;
          timeout = null;
      }
      
      var xmlhttp = CB._loadXml();
  
      var params=JSON.stringify({
          key: CB.appKey,
          timeout : timeout
      });
  
     var thisObj = this;
  
     var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name+"/"+id+"/refresh-message-timeout";
  
     CB._request('PUT',url,params).then(function(response){
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response)));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response)));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  
  CB.CloudQueue.prototype.deleteMessage = function(id,callback) {
      var def;
      
      CB._validate();
  
      if(!id || (!(id instanceof CB.QueueMessage)&&typeof id !== 'string')){
          throw "Delete Message function should have id of the message or insance of QueueMessage as the first parameter. ";
      }
  
      if(id instanceof CB.QueueMessage){
          id = id.id;
      }
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
  
      var params=JSON.stringify({
          key: CB.appKey,
          method: "DELETE"
      });
  
     var thisObj = this;
  
     var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name+"/message/"+id;
  
     CB._request('PUT',url,params).then(function(response){
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response)));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response)));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.prototype.update = function(callback) {
      var def;
      
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
      
      var xmlhttp = CB._loadXml();
  
      var thisObj = this;
  
      var params=JSON.stringify({       
          key: CB.appKey,
          document : CB.toJSON(thisObj)
      });
  
  
     var url = CB.apiUrl + "/queue/" + CB.appId + '/'+thisObj.document.name;
  
     CB._request('PUT',url,params).then(function(response){
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response),thisObj));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response),thisObj));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.getAll = function(callback){
      
      var def;
      
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var xmlhttp = CB._loadXml();
  
      var thisObj = this;
  
      var params=JSON.stringify({       
          key: CB.appKey
      });
  
      var url = CB.apiUrl + "/queue/" + CB.appId + '/';
  
      CB._request('POST',url,params).then(function(response){
  
          if(response === ""){
              response = null;
          }
  
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response)));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response)));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  };
  
  CB.CloudQueue.get = function(queueName,callback){
      var queue = new CB.CloudQueue(queueName);
      return queue.get(callback);
  };
  
  CB.CloudQueue.delete = function(queueName, callback){
      var queue = new CB.CloudQueue(queueName);
      return queue.delete(callback);
  };
  
  CB.QueueMessage = function(data) {
  
      this.document = {};
      this.document.ACL = new CB.ACL(); //ACL(s) of the document
      this.document._type = 'queue-message';
      this.document.expires = null;
      this.document.timeout = 1800; //30 mins by default.
      this.document.delay = null;
      this.document.message = data;
      this.document._id = null;
      this.document._modifiedColumns = ['createdAt','updatedAt','ACL','expires','timeout','delay','message'];
      this.document._isModified = true;
  
  };
  
  Object.defineProperty(CB.QueueMessage.prototype, 'message', {
      get: function() {
          return this.document.message;
      },
      set: function(message) {
          this.document.message = message;
          CB._modified(this,'message');
      }
  });
  
  Object.defineProperty(CB.QueueMessage.prototype, 'ACL', {
      get: function() {
          return this.document.ACL;
      },
      set: function(ACL) {
          this.document.ACL = ACL;
          CB._modified(this,'ACL');
      }
  });
  
  Object.defineProperty(CB.QueueMessage.prototype, 'id', {
      get: function() {
          return this.document._id;
      }
  });
  
  Object.defineProperty(CB.QueueMessage.prototype, 'createdAt', {
      get: function() {
          return this.document.createdAt;
      },
      set: function(createdAt) {
          this.document.createdAt = createdAt;
          CB._modified(this,'createdAt');
      }
  });
  
  Object.defineProperty(CB.QueueMessage.prototype, 'updatedAt', {
      get: function() {
          return this.document.updatedAt;
      },
      set: function(updatedAt) {
          this.document.updatedAt = updatedAt;
          CB._modified(this,'updatedAt');
      }
  });
  
  
  Object.defineProperty(CB.QueueMessage.prototype, 'expires', {
      get: function() {
          return this.document.expires;
      },
      set: function(expires) {
          this.document.expires = expires;
          CB._modified(this,'expires');
      }
  });
  
  Object.defineProperty(CB.QueueMessage.prototype, 'timeout', {
      get: function() {
          return this.document.timeout;
      },
      set: function(timeout) {
          this.document.timeout = timeout;
          CB._modified(this,'timeout');
      }
  });
  
  
  Object.defineProperty(CB.QueueMessage.prototype, 'delay', {
      get: function() {
          if(this.document.delay)
              return this.document.delay/1000;
          else
              return 0;
      },
      set: function(delay) {
          delay *=1000; //converting to seconds from milli seconds,
          this.document.delay = delay;
          CB._modified(this,'delay');
      }
  });
  
  /*
   CloudCache
   */
  
  CB.CloudCache = function(cacheName){
    if(typeof cacheName === 'undefined' || cacheName === null || cacheName === ''){
          throw "Cannot create a cache with empty name";
      }
      this.document = {};
      this.document._tableName = "cache";
      this.document.name = cacheName;
      this.document.size = "";
      this.document.items = [];
  };
  
  Object.defineProperty(CB.CloudCache.prototype, 'name', {
      get: function() {
          return this.document.name;
      }
  });
  
  Object.defineProperty(CB.CloudCache.prototype, 'size', {
      get: function() {
          return this.document.size;
      }
  });
  
  Object.defineProperty(CB.CloudCache.prototype, 'items', {
      get: function() {
          return this.document.items;
      }
  });
  
  CB.CloudCache.prototype.set = function(key, value, callback){
    var def;
    CB._validate();
  
    if (!callback) {
        def = new CB.Promise();
    }
  
    if(typeof value === 'undefined'){
      throw "Value cannot be undefined.";
    }
  
    var params=JSON.stringify({
        key: CB.appKey,
        item:  value
    });
  
    var url = CB.apiUrl+'/cache/'+CB.appId+'/'+this.document.name+'/'+key;
    CB._request('PUT',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
      
      var obj = CB.fromJSON(response);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  };
  
  CB.CloudCache.prototype.deleteItem = function(key, callback){
    var def;
    CB._validate();
  
    if (!callback) {
        def = new CB.Promise();
    }
  
  
    var params=JSON.stringify({
        key: CB.appKey,
        method:"DELETE"
    });
  
    var url = CB.apiUrl+'/cache/'+CB.appId+'/'+this.document.name+'/item/'+key;
    CB._request('PUT',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
      
      var obj = CB.fromJSON(response);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  };
  
  
  CB.CloudCache.prototype.create = function(callback){
    var def;
    CB._validate();
  
    if (!callback) {
        def = new CB.Promise();
    }
  
    var params=JSON.stringify({
        key: CB.appKey
    });
  
    var thisObj= this;
  
    var url = CB.apiUrl+'/cache/'+CB.appId+'/'+this.document.name+'/create';
    CB._request('POST',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
      var obj = CB.fromJSON(response,thisObj);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  };
  
  CB.CloudCache.prototype.get = function(key, callback){
  
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
    var params=JSON.stringify({
        key: CB.appKey
    });
  
  
    var url = CB.apiUrl+'/cache/'+CB.appId+'/'+this.document.name+'/'+key+'/item';
    CB._request('POST',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
      var obj = CB.fromJSON(response);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  
  };
  
  
  CB.CloudCache.prototype.getInfo = function(callback){
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
    var params=JSON.stringify({
        key: CB.appKey
    });
  
    var thisObj= this;
  
    var url = CB.apiUrl+'/cache/'+CB.appId +'/'+this.document.name;
    CB._request('POST',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
      var obj = CB.fromJSON(response, thisObj);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  };
  
  CB.CloudCache.prototype.getItemsCount = function(callback){
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
    var params=JSON.stringify({
        key: CB.appKey
    });
  
    var url = CB.apiUrl+'/cache/'+CB.appId +'/'+this.document.name+'/items/count';
    CB._request('POST',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
      var obj = CB.fromJSON(response);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  };
  
  CB.CloudCache.prototype.getAll = function(callback){
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
       var thisObj= this;
  
    var params=JSON.stringify({
        key: CB.appKey
    });
    var url = CB.apiUrl+'/cache/'+CB.appId+'/'+this.document.name+'/items';
    CB._request('POST',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
      var obj = CB.fromJSON(response); 
      
      thisObj.document.items = obj;
  
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  
  };
  
  
  CB.CloudCache.prototype.clear = function(callback){
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
    var params=JSON.stringify({
        key: CB.appKey,
        method:"DELETE"
    });
  
    var thisObj = this;
  
    var url = CB.apiUrl+'/cache/'+CB.appId+'/'+this.document.name+'/clear/items';
    CB._request('PUT',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
      var obj = CB.fromJSON(response, thisObj);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  };
  
  
  CB.CloudCache.prototype.delete = function(callback){
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
    var params=JSON.stringify({
        key: CB.appKey,
        method:"DELETE"
    });
  
    var thisObj = this;
  
    var url = CB.apiUrl+'/cache/'+CB.appId+'/'+this.document.name;
    CB._request('PUT',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
      var obj = CB.fromJSON(response, thisObj);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  };
  
  CB.CloudCache.getAll = function(callback){
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
    var params=JSON.stringify({
        key: CB.appKey
    });
  
    var url = CB.apiUrl+'/cache/'+CB.appId;
    CB._request('POST',url,params,true).then(function(response){
      if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }    
      var obj = CB.fromJSON(response);
      if (callback) {
          callback.success(obj);
      } else {
          def.resolve(obj);
      }
    },function(err){
        if(callback){
            callback.error(err);
        }else {
            def.reject(err);
        }
    });
    if (!callback) {
        return def;
    }
  };
  
  CB.CloudCache.deleteAll = function(callback){
      var def;
      CB._validate();
  
      if (!callback) {
          def = new CB.Promise();
      }
  
      var params=JSON.stringify({
          key: CB.appKey,
          method:"DELETE"
      });
  
      var url = CB.apiUrl+'/cache/'+CB.appId;
      CB._request('PUT',url,params,true).then(function(response){
        if(CB._isJsonString(response)){
        response = JSON.parse(response);
      }
        var obj = CB.fromJSON(response);
        if (callback) {
            callback.success(obj);
        } else {
            def.resolve(obj);
        }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
      if (!callback) {
          return def;
      }
  };
  /*CloudBoost Push Notifications*/
  
  CB.CloudPush={};
  
  CB.CloudPush.send = function(data,query,callback) {
  	
  	var tableName="Device";	
  
  	if (!CB.appId) {
          throw "CB.appId is null.";
      }    
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      if(!data){
      	throw "data object is null.";
      }
      if(data && (!data.message)){
      	throw "message is not set.";
      }
  
  	//Query Set
  	if(query && Object.prototype.toString.call(query)=="[object Object]" && typeof query.success !== 'function'){
  		var pushQuery=query;
  	}
  	//Channels List
  	if(query && Object.prototype.toString.call(query)=="[object Array]" && typeof query.success !== 'function'){
  		var pushQuery = new CB.CloudQuery(tableName);
  		pushQuery.containedIn('channels', query);		
  	}
  	//Single Channel	
  	if(query && Object.prototype.toString.call(query)=="[object String]" && typeof query.success !== 'function'){
  		var pushQuery = new CB.CloudQuery(tableName);
  		pushQuery.containedIn('channels', [query]);		
  	}
      //when query param is callback
  	if(query && Object.prototype.toString.call(query)=="[object Object]" && typeof query.success === 'function'){
  		callback=query;
          var pushQuery = new CB.CloudQuery(tableName);
      } 
      //No query param
      if(!query){
          var pushQuery = new CB.CloudQuery(tableName);
      }
  
      var params=JSON.stringify({
          query      : pushQuery.query,        
          sort       : pushQuery.sort,
          limit      : pushQuery.limit,
          skip       : pushQuery.skip,
          key        : CB.appKey,        
          data       : data
      });  
  
      var url = CB.apiUrl + "/push/" + CB.appId + '/send';
  
      CB._request('POST',url,params).then(function(response){
          var object=response;
          if(CB._isJsonString(response)){
              object = JSON.parse(response);
          }
          
          if (callback) {
              callback.success(object);
          } else {
              def.resolve(object);
          }
      },function(err){
  
          if(CB._isJsonString(err)){
              err = JSON.parse(err);
          }    
          
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };    
  
  
  
  CB.CloudPush.enableWebNotifications = function(callback) {
  
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      //Check document
      if(typeof(document) !== 'undefined'){
  
          CB.CloudPush._requestBrowserNotifications().then(function(response){
  
              if('serviceWorker' in navigator) {
                  return navigator.serviceWorker.register('serviceWorker.js',{scope: './'});
              }else { 
                  var noServerDef = new CB.Promise(); 
                  noServerDef.reject('Service workers aren\'t supported in this browser.');  
                  return noServerDef;
              }
  
          }).then(function(registration){
  
              if (!(registration.showNotification)) { 
                  var noServerDef = new CB.Promise(); 
                  noServerDef.reject('Notifications aren\'t supported on service workers.');  
                  return noServerDef;                   
              }else{
                  return CB.CloudPush._subscribe();
              }
  
          }).then(function(subscription){
  
              //PublicKey for secure connection with server
              var browserKey = subscription.getKey ? subscription.getKey('p256dh') : '';
              browserKey=browserKey ? btoa(String.fromCharCode.apply(null, new Uint8Array(browserKey))) : '';  
  
              //AuthKey for secure connection with server
              var authKey = subscription.getKey ? subscription.getKey('auth') : '';
              authKey=authKey ? btoa(String.fromCharCode.apply(null, new Uint8Array(authKey))) : '';
                       
  
              CB.CloudPush._addDevice(CB._getThisBrowserName(), subscription.endpoint, browserKey, authKey, {
                  success : function(obj){
                      if (callback) {
                          callback.success();
                      } else {
                          def.resolve();
                      }
                  },error : function(error){
                      if(callback){
                          callback.error(error);
                      }else {
                          def.reject(error);
                      }
                  }
              });        
  
          },function(error){
              if(callback){
                  callback.error(error);
              }else {
                  def.reject(error);
              }
          });
  
      }else{
          if(callback){
              callback.error("Browser document not found");
          }else {
              def.reject("Browser document not found");
          }
      } 
  
      if (!callback) {
          return def;
      }   
  };
  
  
  CB.CloudPush.disableWebNotifications = function(callback) {
  
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      //Check document
      if(typeof(document) !== 'undefined'){
  
          CB.CloudPush._getSubscription().then(function(subscription){   
  
              //No subscription 
              if(!subscription){
                  if (callback) {
                      callback.success();
                  } else {
                      def.resolve();
                  } 
              }
  
              if(subscription){
                  var promises=[];
  
                  //We have a subcription, so call unsubscribe on it
                  promises.push(subscription.unsubscribe());
                  //Remove Device Objects
                  promises.push(CB.CloudPush._deleteDevice(CB._getThisBrowserName(), subscription.endpoint));        
  
                  CB.Promise.all(promises).then(function(successful) {
                      if (callback) {
                          callback.success();
                      } else {
                          def.resolve();
                      }
                  },function(error) {                     
                      if (callback) {
                          callback.error(error);
                      } else {
                          def.reject(error);
                      }                  
                  });
              }
  
          },function(error){
              if(callback){
                  callback.error(error);
              }else {
                  def.reject(error);
              }
          });
  
      }else{
          if(callback){
              callback.error("Browser document not found");
          }else {
              def.reject("Browser document not found");
          }
      } 
  
      if (!callback) {
          return def;
      }   
  };
  
  
  CB.CloudPush._subscribe = function (){
  
      var def = new CB.Promise();
  
      // Check if push messaging is supported  
      if (!('PushManager' in window)) {  
          return def.reject('Push messaging isn\'t supported.');         
      }
  
      navigator.serviceWorker.ready.then(function(reg) {
  
          reg.pushManager.getSubscription().then(function(subscription) { 
  
              if (!subscription) {  
                  reg.pushManager.subscribe({userVisibleOnly: true}).then(function(subscription) {                
                      def.resolve(subscription);
                  }).catch(function(err) {                                
                      def.reject(err);               
                  });
              }else{
                  def.resolve(subscription);
              }     
        
          }).catch(function(err) {  
              def.reject(err);  
          });   
  
      },function(error){
          def.reject(error);
      });
  
      return def;
  };
  
  
  CB.CloudPush._getSubscription = function(){
  
      var def = new CB.Promise();
      
      navigator.serviceWorker.ready.then(function(reg) {
  
          reg.pushManager.getSubscription().then(function(subscription) { 
  
              if (!subscription) {  
                  def.resolve(null);
              }else{
                  def.resolve(subscription);
              }     
        
          }).catch(function(err) {  
              def.reject(err);  
          });   
  
      },function(error){
          def.reject(error);
      });
  
      return def;
  };
   
  
  CB.CloudPush._requestBrowserNotifications = function() {
  
      var def = new CB.Promise();
  
      if (!("Notification" in window)) {        
          def.reject("This browser does not support system notifications");
      }else if (Notification.permission === "granted") {  
  
          def.resolve("Permission granted");
  
      }else if (Notification.permission !== 'denied') { 
  
          Notification.requestPermission(function (permission) {   
  
            if(permission === "granted") {  
              def.resolve("Permission granted");      
            }
  
            if(permission === "denied"){
              def.reject("Permission denied");
            }
  
          });
      }
  
      return def;
  };
  
  //save the device document to the db
  CB.CloudPush._addDevice = function(deviceOS, endPoint, browserKey, authKey, callback) { 
      
      var def;
      CB._validate();
  
      //Set Fields
      var thisObj = new CB.CloudObject('Device');
      thisObj.set('deviceOS', deviceOS);
      thisObj.set('deviceToken', endPoint);
      thisObj.set('metadata', {browserKey:browserKey,authKey:authKey});
      
      if (!callback) {
          def = new CB.Promise();
      }    
     
      var xmlhttp = CB._loadXml();
      var params=JSON.stringify({
          document: CB.toJSON(thisObj),
          key: CB.appKey
      });
  
      var url = CB.apiUrl + "/push/" + CB.appId;
      CB._request('PUT',url,params).then(function(response){
          thisObj = CB.fromJSON(JSON.parse(response),thisObj);
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
    
      if (!callback) {
          return def;
      }
  };
  
  
  CB.CloudPush._deleteDevice = function(deviceOS, endPoint, callback) { //delete an object matching the objectId
      if (!CB.appId) {
          throw "CB.appId is null.";
      }     
     
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      var data={
          deviceOS:deviceOS,
          deviceToken:endPoint
      };
  
      var params=JSON.stringify({
          key: CB.appKey,
          document: data,
          method:"DELETE"
      });
      
      var url = CB.apiUrl + "/push/" + CB.appId;
  
      CB._request('PUT',url,params).then(function(response){
          if (callback) {
              callback.success(response);
          } else {
              def.resolve(response);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  
  
  /*
   CloudUser
   */
  CB.CloudUser = CB.CloudUser || function() {
      if (!this.document) this.document = {};
      this.document._tableName = 'User';
      this.document.expires = null;
      this.document._type = 'user';
      this.document.expires = null;
      this.document.ACL = new CB.ACL();
      this.document._isModified = true;
      this.document._modifiedColumns = ['createdAt','updatedAt','ACL','expires'];
  };
  
  //Description  : This function gets the current user from the server by taking the sessionId from querystring.
  //Params : 
  //returns : CloudUser object if the current user is still in session or null. 
  CB.CloudUser.getCurrentUser = function(callback){
      
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      
      //now call the signup API.
      var params=JSON.stringify({        
          key: CB.appKey
      });
  
      url = CB.apiUrl + "/user/" + CB.appId + "/currentUser";
  
      CB._request('POST',url,params).then(function(response){ 
          var user = response;       
          if(response){  
              try{
                  user = new CB.CloudUser();
                  CB.fromJSON(JSON.parse(response),user);
                  CB.CloudUser.current=user;
                  CB.CloudUser._setCurrentUser(user);
              }catch(e){
              }            
          }
          
          if (callback) {
              callback.success(user);
          } else {
              def.resolve(user);
          }
          
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  
  //Private Static fucntions
  
  //Description  : This function gets the current user from the cookie or from local storage.
  //Params : 
  //returns : CloudUser object if the current user is still in session or null. 
  CB.CloudUser._getCurrentUser = function(){
      var content = CB._getCookie("CBCurrentUser");
      if(content && content.length > 0){
          return CB.fromJSON(JSON.parse(content));
      }else{
          return null;
      }
  };
  
  //Description  : This function saves the current user to the cookie or to local storage.
  //Params : @user - Instance of CB.CloudUser Object.
  //returns : void. 
  CB.CloudUser._setCurrentUser = function(user){
      //save the user to the cookie. 
      if(!user){
          return;
      }
      
      //expiration time of 30 days.
      CB._createCookie("CBCurrentUser", JSON.stringify(CB.toJSON(user)),30*24*60*60*1000); 
  };
  
  //Description  : This function saves the current user to the cookie or to local storage.
  //Params : @user - Instance of CB.CloudUser Object.
  //returns : void. 
  CB.CloudUser._removeCurrentUser = function(){
      //save the user to the cookie. 
      CB._deleteCookie("CBCurrentUser");
  };
  
  CB.CloudUser.resetPassword = function(email,callback){
      
      if (!email) {
          throw "Email is required.";
      }
  
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      
      //now call the signup API.
      var params=JSON.stringify({
          email: email,
          key: CB.appKey
      });
  
      url = CB.apiUrl + "/user/" + CB.appId + "/resetPassword";
  
      CB._request('POST',url,params).then(function(response){
          if (callback) {
              callback.success();
          } else {
              def.resolve();
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  CB.CloudUser.prototype = Object.create(CB.CloudObject.prototype);
  
  Object.defineProperty(CB.CloudUser.prototype, 'username', {
      get: function() {
          return this.document.username;
      },
      set: function(username) {
          this.document.username = username;
          CB._modified(this,'username');
      }
  });
  Object.defineProperty(CB.CloudUser.prototype, 'password', {
      get: function() {
          return this.document.password;
      },
      set: function(password) {
          this.document.password = password;
          CB._modified(this,'password');
      }
  });
  Object.defineProperty(CB.CloudUser.prototype, 'email', {
      get: function() {
          return this.document.email;
      },
      set: function(email) {
          this.document.email = email;
          CB._modified(this,'email');
      }
  });
  
  CB.CloudUser.current = CB.CloudUser._getCurrentUser();
  
  CB.CloudUser.prototype.signUp = function(callback) {
  
      if(CB._isNode){
          throw "Error : You cannot signup the user on the server. Use CloudUser.save() instead.";
      }
  
      if (!this.document.username) {
          throw "Username is not set.";
      }
      if (!this.document.password) {
          throw "Password is not set.";
      }
      if (!this.document.email) {
          throw "Email is not set.";
      }
      var thisObj = this;
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      //now call the signup API.
      var params=JSON.stringify({
          document: CB.toJSON(thisObj),
          key: CB.appKey
      });
      url = CB.apiUrl + "/user/" + CB.appId + "/signup" ;
  
      CB._request('POST',url,params).then(function(user){
  
          var response=null;
          if(user && user!=""){
              CB.fromJSON(JSON.parse(user),thisObj);
              CB.CloudUser.current = thisObj;       
              CB.CloudUser._setCurrentUser(thisObj);
              response=thisObj;
          }
          
          if (callback) {
              callback.success(response);
          } else {
              def.resolve(response);
          }
  
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
  
      if (!callback) {
          return def;
      }
  };
  
  
  CB.CloudUser.prototype.changePassword = function(oldPassword, newPassword, callback) {
  
      var thisObj = this;
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      //now call the signup API.
      var params=JSON.stringify({
          oldPassword: oldPassword,
          newPassword : newPassword,
          key: CB.appKey
      });
  
      url = CB.apiUrl + "/user/" + CB.appId + "/changePassword" ;
  
      CB._request('PUT',url,params).then(function(response){
          if (callback) {
              callback.success(CB.fromJSON(JSON.parse(response),thisObj));
          } else {
              def.resolve(CB.fromJSON(JSON.parse(response),thisObj));
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  
  CB.CloudUser.prototype.logIn = function(callback) {
  
      if(CB._isNode){
          throw "Error : You cannot login the user on the server.";
      }
  
      if (!this.document.username) {
          throw "Username is not set.";
      }
      if (!this.document.password) {
          throw "Password is not set.";
      }
      var thisObj = this;
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      //now call the signup API.
      var params=JSON.stringify({
          document: CB.toJSON(thisObj),
          key: CB.appKey
      });
      url = CB.apiUrl + "/user/" + CB.appId + "/login" ;
  
      CB._request('POST',url,params).then(function(response){
          thisObj = CB.fromJSON(JSON.parse(response),thisObj);
          CB.CloudUser.current = thisObj;
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
          CB.CloudUser._setCurrentUser(thisObj);
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  CB.CloudUser.authenticateWithProvider = function(dataJson, callback) {
  
      if(CB._isNode){
          throw "Error : You cannot login the user on the server.";
      }
  
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
  
      if(!dataJson){
          throw "data object is null.";
      }
  
      if(dataJson && (!dataJson.provider)){
          throw "provider is not set.";
      }
  
      if(dataJson && (!dataJson.accessToken)) {
          throw "accessToken is not set.";
      }
  
      if(dataJson.provider.toLowerCase()==="twiter" && !dataJson.accessSecret) {
          throw "accessSecret is required for provider twitter.";
      }         
    
      var params=JSON.stringify({ 
          provider: dataJson.provider,
          accessToken: dataJson.accessToken, 
          accessSecret: dataJson.accessSecret,           
          key: CB.appKey
      });
  
      url = CB.apiUrl + "/user/" + CB.appId + "/loginwithprovider" ;
  
      CB._request('POST',url,params).then(function(response){
          var user = response;       
          if(response){  
              try{
                  user = new CB.CloudUser();
                  CB.fromJSON(JSON.parse(response),user);
                  CB.CloudUser.current=user;
                  CB.CloudUser._setCurrentUser(user);
              }catch(e){
              }            
          }
  
          if (callback) {
              callback.success(user);
          } else {
              def.resolve(user);
          }
          
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  CB.CloudUser.prototype.logOut = function(callback) {
  
      if(CB._isNode){
          throw "Error : You cannot logOut the user on the server.";
      }
      
      var thisObj = this;
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      //now call the logout API.
      var params=JSON.stringify({
          document: CB.toJSON(thisObj),
          key: CB.appKey
      });
      url = CB.apiUrl + "/user/" + CB.appId + "/logout" ;
  
      CB._request('POST',url,params).then(function(response){
          CB.fromJSON(JSON.parse(response),thisObj);
          CB.CloudUser.current = null;
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
          CB.CloudUser._removeCurrentUser();
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
  
      if (!callback) {
          return def;
      }
  };
  CB.CloudUser.prototype.addToRole = function(role, callback) {
      if (!role) {
          throw "Role is null";
      }
      var thisObj = this;
      var def;
      if (!callback) {
          def = new CB.Promise();
      }   
  
      //Call the addToRole API
      var params=JSON.stringify({
          user: CB.toJSON(thisObj),
          role: CB.toJSON(role),
          key: CB.appKey
      });
      url = CB.apiUrl + "/user/" + CB.appId + "/addToRole" ;
  
      CB._request('PUT',url,params).then(function(response){
          CB.fromJSON(JSON.parse(response),thisObj);
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  CB.CloudUser.prototype.isInRole = function(role) {
      if (!role) {
          throw "role is null";
      }
  
      var roleArray=this.get('roles');
      var userRoleIds=[];
  
      if(roleArray && roleArray.length>0){
          for(var i=0;i<roleArray.length; ++i){
              userRoleIds.push(roleArray[i].document._id);
          }
      }
      
      return (userRoleIds.indexOf(role.document._id) >= 0);
  };
  
  CB.CloudUser.prototype.removeFromRole = function(role, callback) {
      if (!role) {
          throw "Role is null";
      }
      var thisObj = this;
      var def;
      if (!callback) {
          def = new CB.Promise();
      }
      //now call the removeFromRole API.
      var params=JSON.stringify({
          user: CB.toJSON(thisObj),
          role: CB.toJSON(role),
          key: CB.appKey
      });
      url = CB.apiUrl + "/user/" + CB.appId + "/removeFromRole" ;
  
      CB._request('PUT',url,params).then(function(response){
          CB.fromJSON(JSON.parse(response),thisObj);
          if (callback) {
              callback.success(thisObj);
          } else {
              def.resolve(thisObj);
          }
      },function(err){
          if(callback){
              callback.error(err);
          }else {
              def.reject(err);
          }
      });
  
      if (!callback) {
          return def;
      }
  };
  
  