JSON解析、JAVA常用的工具类、JAVA集合框架、JAVA泛型、枚举

/*! Socket.IO.js build:0.9.11, development. Copyright(c) 2011 LearnBoost <[e-mail]> MIT Licensed */var io = ('undefined' === typeof module ? {} : module.exports);(function() {/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, global) {  /**   * IO namespace.   *   * @namespace   */  var io = exports;  /**   * Socket.IO version   *   * @api public   */  io.version = '0.9.11';  /**   * Protocol implemented.   *   * @api public   */  io.protocol = 1;  /**   * Available transports, these will be populated with the available transports   *   * @api public   */  io.transports = [];  /**   * Keep track of jsonp callbacks.   *   * @api private   */  io.j = [];  /**   * Keep track of our io.Sockets   *   * @api private   */  io.sockets = {};  /**   * Manages connections to hosts.   *   * @param {String} uri   * @Param {Boolean} force creation of new socket (defaults to false)   * @api public   */  io.connect = function (host, details) {    var uri = io.util.parseUri(host)      , uuri      , socket;    if (global && global.location) {      uri.protocol = uri.protocol || global.location.protocol.slice(0, -1);      uri.host = uri.host || (global.document        ? global.document.domain : global.location.hostname);      uri.port = uri.port || global.location.port;    }    uuri = io.util.uniqueUri(uri);    var options = {        host: uri.host      , secure: 'https' == uri.protocol      , port: uri.port || ('https' == uri.protocol ? 443 : 80)      , query: uri.query || ''    };    io.util.merge(options, details);    if (options['force new connection'] || !io.sockets[uuri]) {      socket = new io.Socket(options);    }    if (!options['force new connection'] && socket) {      io.sockets[uuri] = socket;    }    socket = socket || io.sockets[uuri];    // if path is different from '' or /    return socket.of(uri.path.length > 1 ? uri.path : '');  };})('object' === typeof module ? module.exports : (this.io = {}), this);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, global) {  /**   * Utilities namespace.   *   * @namespace   */  var util = exports.util = {};  /**   * Parses an URI   *   * @author Steven Levithan <stevenlevithan.com> (MIT license)   * @api public   */  var re = /^(?:(?![^:@]+:[^:@\/]*@)([^:\/?#.]+):)?(?:\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?([^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;  var parts = ['source', 'protocol', 'authority', 'userInfo', 'user', 'password',               'host', 'port', 'relative', 'path', 'directory', 'file', 'query',               'anchor'];  util.parseUri = function (str) {    var m = re.exec(str || '')      , uri = {}      , i = 14;    while (i--) {      uri[parts[i]] = m[i] || '';    }    return uri;  };  /**   * Produces a unique url that identifies a Socket.IO connection.   *   * @param {Object} uri   * @api public   */  util.uniqueUri = function (uri) {    var protocol = uri.protocol      , host = uri.host      , port = uri.port;    if ('document' in global) {      host = host || document.domain;      port = port || (protocol == 'https'        && document.location.protocol !== 'https:' ? 443 : document.location.port);    } else {      host = host || 'localhost';      if (!port && protocol == 'https') {        port = 443;      }    }    return (protocol || 'http') + '://' + host + ':' + (port || 80);  };  /**   * Mergest 2 query strings in to once unique query string   *   * @param {String} base   * @param {String} addition   * @api public   */  util.query = function (base, addition) {    var query = util.chunkQuery(base || '')      , components = [];    util.merge(query, util.chunkQuery(addition || ''));    for (var part in query) {      if (query.hasOwnProperty(part)) {        components.push(part + '=' + query[part]);      }    }    return components.length ? '?' + components.join('&') : '';  };  /**   * Transforms a querystring in to an object   *   * @param {String} qs   * @api public   */  util.chunkQuery = function (qs) {    var query = {}      , params = qs.split('&')      , i = 0      , l = params.length      , kv;    for (; i < l; ++i) {      kv = params[i].split('=');      if (kv[0]) {        query[kv[0]] = kv[1];      }    }    return query;  };  /**   * Executes the given function when the page is loaded.   *   *     io.util.load(function () { console.log('page loaded'); });   *   * @param {Function} fn   * @api public   */  var pageLoaded = false;  util.load = function (fn) {    if ('document' in global && document.readyState === 'complete' || pageLoaded) {      return fn();    }    util.on(global, 'load', fn, false);  };  /**   * Adds an event.   *   * @api private   */  util.on = function (element, event, fn, capture) {    if (element.attachEvent) {      element.attachEvent('on' + event, fn);    } else if (element.addEventListener) {      element.addEventListener(event, fn, capture);    }  };  /**   * Generates the correct `XMLHttpRequest` for regular and cross domain requests.   *   * @param {Boolean} [xdomain] Create a request that can be used cross domain.   * @returns {XMLHttpRequest|false} If we can create a XMLHttpRequest.   * @api private   */  util.request = function (xdomain) {    if (xdomain && 'undefined' != typeof XDomainRequest && !util.ua.hasCORS) {      return new XDomainRequest();    }    if ('undefined' != typeof XMLHttpRequest && (!xdomain || util.ua.hasCORS)) {      return new XMLHttpRequest();    }    if (!xdomain) {      try {        return new window[(['Active'].concat('Object').join('X'))]('Microsoft.XMLHTTP');      } catch(e) { }    }    return null;  };  /**   * XHR based transport constructor.   *   * @constructor   * @api public   */  /**   * Change the internal pageLoaded value.   */  if ('undefined' != typeof window) {    util.load(function () {      pageLoaded = true;    });  }  /**   * Defers a function to ensure a spinner is not displayed by the browser   *   * @param {Function} fn   * @api public   */  util.defer = function (fn) {    if (!util.ua.webkit || 'undefined' != typeof importScripts) {      return fn();    }    util.load(function () {      setTimeout(fn, 100);    });  };  /**   * Merges two objects.   *   * @api public   */  util.merge = function merge (target, additional, deep, lastseen) {    var seen = lastseen || []      , depth = typeof deep == 'undefined' ? 2 : deep      , prop;    for (prop in additional) {      if (additional.hasOwnProperty(prop) && util.indexOf(seen, prop) < 0) {        if (typeof target[prop] !== 'object' || !depth) {          target[prop] = additional[prop];          seen.push(additional[prop]);        } else {          util.merge(target[prop], additional[prop], depth - 1, seen);        }      }    }    return target;  };  /**   * Merges prototypes from objects   *   * @api public   */  util.mixin = function (ctor, ctor2) {    util.merge(ctor.prototype, ctor2.prototype);  };  /**   * Shortcut for prototypical and static inheritance.   *   * @api private   */  util.inherit = function (ctor, ctor2) {    function f() {};    f.prototype = ctor2.prototype;    ctor.prototype = new f;  };  /**   * Checks if the given object is an Array.   *   *     io.util.isArray([]); // true   *     io.util.isArray({}); // false   *   * @param Object obj   * @api public   */  util.isArray = Array.isArray || function (obj) {    return Object.prototype.toString.call(obj) === '[object Array]';  };  /**   * Intersects values of two arrays into a third   *   * @api public   */  util.intersect = function (arr, arr2) {    var ret = []      , longest = arr.length > arr2.length ? arr : arr2      , shortest = arr.length > arr2.length ? arr2 : arr;    for (var i = 0, l = shortest.length; i < l; i++) {      if (~util.indexOf(longest, shortest[i]))        ret.push(shortest[i]);    }    return ret;  };  /**   * Array indexOf compatibility.   *   * @see bit.ly/a5Dxa2   * @api public   */  util.indexOf = function (arr, o, i) {    for (var j = arr.length, i = i < 0 ? i + j < 0 ? 0 : i + j : i || 0;         i < j && arr[i] !== o; i++) {}    return j <= i ? -1 : i;  };  /**   * Converts enumerables to array.   *   * @api public   */  util.toArray = function (enu) {    var arr = [];    for (var i = 0, l = enu.length; i < l; i++)      arr.push(enu[i]);    return arr;  };  /**   * UA / engines detection namespace.   *   * @namespace   */  util.ua = {};  /**   * Whether the UA supports CORS for XHR.   *   * @api public   */  util.ua.hasCORS = 'undefined' != typeof XMLHttpRequest && (function () {    try {      var a = new XMLHttpRequest();    } catch (e) {      return false;    }    return a.withCredentials != undefined;  })();  /**   * Detect webkit.   *   * @api public   */  util.ua.webkit = 'undefined' != typeof navigator    && /webkit/i.test(navigator.userAgent);   /**   * Detect iPad/iPhone/iPod.   *   * @api public   */  util.ua.iDevice = 'undefined' != typeof navigator      && /iPad|iPhone|iPod/i.test(navigator.userAgent);})('undefined' != typeof io ? io : module.exports, this);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io) {  /**   * Expose constructor.   */  exports.EventEmitter = EventEmitter;  /**   * Event emitter constructor.   *   * @api public.   */  function EventEmitter () {};  /**   * Adds a listener   *   * @api public   */  EventEmitter.prototype.on = function (name, fn) {    if (!this.$events) {      this.$events = {};    }    if (!this.$events[name]) {      this.$events[name] = fn;    } else if (io.util.isArray(this.$events[name])) {      this.$events[name].push(fn);    } else {      this.$events[name] = [this.$events[name], fn];    }    return this;  };  EventEmitter.prototype.addListener = EventEmitter.prototype.on;  /**   * Adds a volatile listener.   *   * @api public   */  EventEmitter.prototype.once = function (name, fn) {    var self = this;    function on () {      self.removeListener(name, on);      fn.apply(this, arguments);    };    on.listener = fn;    this.on(name, on);    return this;  };  /**   * Removes a listener.   *   * @api public   */  EventEmitter.prototype.removeListener = function (name, fn) {    if (this.$events && this.$events[name]) {      var list = this.$events[name];      if (io.util.isArray(list)) {        var pos = -1;        for (var i = 0, l = list.length; i < l; i++) {          if (list[i] === fn || (list[i].listener && list[i].listener === fn)) {            pos = i;            break;          }        }        if (pos < 0) {          return this;        }        list.splice(pos, 1);        if (!list.length) {          delete this.$events[name];        }      } else if (list === fn || (list.listener && list.listener === fn)) {        delete this.$events[name];      }    }    return this;  };  /**   * Removes all listeners for an event.   *   * @api public   */  EventEmitter.prototype.removeAllListeners = function (name) {    if (name === undefined) {      this.$events = {};      return this;    }    if (this.$events && this.$events[name]) {      this.$events[name] = null;    }    return this;  };  /**   * Gets all listeners for a certain event.   *   * @api publci   */  EventEmitter.prototype.listeners = function (name) {    if (!this.$events) {      this.$events = {};    }    if (!this.$events[name]) {      this.$events[name] = [];    }    if (!io.util.isArray(this.$events[name])) {      this.$events[name] = [this.$events[name]];    }    return this.$events[name];  };  /**   * Emits an event.   *   * @api public   */  EventEmitter.prototype.emit = function (name) {    if (!this.$events) {      return false;    }    var handler = this.$events[name];    if (!handler) {      return false;    }    var args = Array.prototype.slice.call(arguments, 1);    if ('function' == typeof handler) {      handler.apply(this, args);    } else if (io.util.isArray(handler)) {      var listeners = handler.slice();      for (var i = 0, l = listeners.length; i < l; i++) {        listeners[i].apply(this, args);      }    } else {      return false;    }    return true;  };})(    'undefined' != typeof io ? io : module.exports  , 'undefined' != typeof io ? io : module.parent.exports);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed *//** * Based on JSON2 (http://www.JSON.org/js.html). */(function (exports, nativeJSON) {  "use strict";  // use native JSON if it's available  if (nativeJSON && nativeJSON.parse){    return exports.JSON = {      parse: nativeJSON.parse    , stringify: nativeJSON.stringify    };  }  var JSON = exports.JSON = {};  function f(n) {      // Format integers to have at least two digits.      return n < 10 ? '0' + n : n;  }  function date(d, key) {    return isFinite(d.valueOf()) ?        d.getUTCFullYear()     + '-' +        f(d.getUTCMonth() + 1) + '-' +        f(d.getUTCDate())      + 'T' +        f(d.getUTCHours())     + ':' +        f(d.getUTCMinutes())   + ':' +        f(d.getUTCSeconds())   + 'Z' : null;  };  var cx = /[\u0000\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,      escapable = /[\\\"\x00-\x1f\x7f-\x9f\u00ad\u0600-\u0604\u070f\u17b4\u17b5\u200c-\u200f\u2028-\u202f\u2060-\u206f\ufeff\ufff0-\uffff]/g,      gap,      indent,      meta = {    // table of character substitutions          '\b': '\\b',          '\t': '\\t',          '\n': '\\n',          '\f': '\\f',          '\r': '\\r',          '"' : '\\"',          '\\': '\\\\'      },      rep;  function quote(string) {// If the string contains no control characters, no quote characters, and no// backslash characters, then we can safely slap some quotes around it.// Otherwise we must also replace the offending characters with safe escape// sequences.      escapable.lastIndex = 0;      return escapable.test(string) ? '"' + string.replace(escapable, function (a) {          var c = meta[a];          return typeof c === 'string' ? c :              '\\u' + ('0000' + a.charCodeAt(0).toString(16)).slice(-4);      }) + '"' : '"' + string + '"';  }  function str(key, holder) {// Produce a string from holder[key].      var i,          // The loop counter.          k,          // The member key.          v,          // The member value.          length,          mind = gap,          partial,          value = holder[key];// If the value has a toJSON method, call it to obtain a replacement value.      if (value instanceof Date) {          value = date(key);      }// If we were called with a replacer function, then call the replacer to// obtain a replacement value.      if (typeof rep === 'function') {          value = rep.call(holder, key, value);      }// What happens next depends on the value's type.      switch (typeof value) {      case 'string':          return quote(value);      case 'number':// JSON numbers must be finite. Encode non-finite numbers as null.          return isFinite(value) ? String(value) : 'null';      case 'boolean':      case 'null':// If the value is a boolean or null, convert it to a string. Note:// typeof null does not produce 'null'. The case is included here in// the remote chance that this gets fixed someday.          return String(value);// If the type is 'object', we might be dealing with an object or an array or// null.      case 'object':// Due to a specification blunder in ECMAScript, typeof null is 'object',// so watch out for that case.          if (!value) {              return 'null';          }// Make an array to hold the partial results of stringifying this object value.          gap += indent;          partial = [];// Is the value an array?          if (Object.prototype.toString.apply(value) === '[object Array]') {// The value is an array. Stringify every element. Use null as a placeholder// for non-JSON values.              length = value.length;              for (i = 0; i < length; i += 1) {                  partial[i] = str(i, value) || 'null';              }// Join all of the elements together, separated with commas, and wrap them in// brackets.              v = partial.length === 0 ? '[]' : gap ?                  '[\n' + gap + partial.join(',\n' + gap) + '\n' + mind + ']' :                  '[' + partial.join(',') + ']';              gap = mind;              return v;          }// If the replacer is an array, use it to select the members to be stringified.          if (rep && typeof rep === 'object') {              length = rep.length;              for (i = 0; i < length; i += 1) {                  if (typeof rep[i] === 'string') {                      k = rep[i];                      v = str(k, value);                      if (v) {                          partial.push(quote(k) + (gap ? ': ' : ':') + v);                      }                  }              }          } else {// Otherwise, iterate through all of the keys in the object.              for (k in value) {                  if (Object.prototype.hasOwnProperty.call(value, k)) {                      v = str(k, value);                      if (v) {                          partial.push(quote(k) + (gap ? ': ' : ':') + v);                      }                  }              }          }// Join all of the member texts together, separated with commas,// and wrap them in braces.          v = partial.length === 0 ? '{}' : gap ?              '{\n' + gap + partial.join(',\n' + gap) + '\n' + mind + '}' :              '{' + partial.join(',') + '}';          gap = mind;          return v;      }  }// If the JSON object does not yet have a stringify method, give it one.  JSON.stringify = function (value, replacer, space) {// The stringify method takes a value and an optional replacer, and an optional// space parameter, and returns a JSON text. The replacer can be a function// that can replace values, or an array of strings that will select the keys.// A default replacer method can be provided. Use of the space parameter can// produce text that is more easily readable.      var i;      gap = '';      indent = '';// If the space parameter is a number, make an indent string containing that// many spaces.      if (typeof space === 'number') {          for (i = 0; i < space; i += 1) {              indent += ' ';          }// If the space parameter is a string, it will be used as the indent string.      } else if (typeof space === 'string') {          indent = space;      }// If there is a replacer, it must be a function or an array.// Otherwise, throw an error.      rep = replacer;      if (replacer && typeof replacer !== 'function' &&              (typeof replacer !== 'object' ||              typeof replacer.length !== 'number')) {          throw new Error('JSON.stringify');      }// Make a fake root object containing our value under the key of ''.// Return the result of stringifying the value.      return str('', {'': value});  };// If the JSON object does not yet have a parse method, give it one.  JSON.parse = function (text, reviver) {  // The parse method takes a text and an optional reviver function, and returns  // a JavaScript value if the text is a valid JSON text.      var j;      function walk(holder, key) {  // The walk method is used to recursively walk the resulting structure so  // that modifications can be made.          var k, v, value = holder[key];          if (value && typeof value === 'object') {              for (k in value) {                  if (Object.prototype.hasOwnProperty.call(value, k)) {                      v = walk(value, k);                      if (v !== undefined) {                          value[k] = v;                      } else {                          delete value[k];                      }                  }              }          }          return reviver.call(holder, key, value);      }  // Parsing happens in four stages. In the first stage, we replace certain  // Unicode characters with escape sequences. JavaScript handles many characters  // incorrectly, either silently deleting them, or treating them as line endings.      text = String(text);      cx.lastIndex = 0;      if (cx.test(text)) {          text = text.replace(cx, function (a) {              return '\\u' +                  ('0000' + a.charCodeAt(0).toString(16)).slice(-4);          });      }  // In the second stage, we run the text against regular expressions that look  // for non-JSON patterns. We are especially concerned with '()' and 'new'  // because they can cause invocation, and '=' because it can cause mutation.  // But just to be safe, we want to reject all unexpected forms.  // We split the second stage into 4 regexp operations in order to work around  // crippling inefficiencies in IE's and Safari's regexp engines. First we  // replace the JSON backslash pairs with '@' (a non-JSON character). Second, we  // replace all simple value tokens with ']' characters. Third, we delete all  // open brackets that follow a colon or comma or that begin the text. Finally,  // we look to see that the remaining characters are only whitespace or ']' or  // ',' or ':' or '{' or '}'. If that is so, then the text is safe for eval.      if (/^[\],:{}\s]*$/              .test(text.replace(/\\(?:["\\\/bfnrt]|u[0-9a-fA-F]{4})/g, '@')                  .replace(/"[^"\\\n\r]*"|true|false|null|-?\d+(?:\.\d*)?(?:[eE][+\-]?\d+)?/g, ']')                  .replace(/(?:^|:|,)(?:\s*\[)+/g, ''))) {  // In the third stage we use the eval function to compile the text into a  // JavaScript structure. The '{' operator is subject to a syntactic ambiguity  // in JavaScript: it can begin a block or an object literal. We wrap the text  // in parens to eliminate the ambiguity.          j = eval('(' + text + ')');  // In the optional fourth stage, we recursively walk the new structure, passing  // each name/value pair to a reviver function for possible transformation.          return typeof reviver === 'function' ?              walk({'': j}, '') : j;      }  // If the text is not JSON parseable, then a SyntaxError is thrown.      throw new SyntaxError('JSON.parse');  };})(    'undefined' != typeof io ? io : module.exports  , typeof JSON !== 'undefined' ? JSON : undefined);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io) {  /**   * Parser namespace.   *   * @namespace   */  var parser = exports.parser = {};  /**   * Packet types.   */  var packets = parser.packets = [      'disconnect'    , 'connect'    , 'heartbeat'    , 'message'    , 'json'    , 'event'    , 'ack'    , 'error'    , 'noop'  ];  /**   * Errors reasons.   */  var reasons = parser.reasons = [      'transport not supported'    , 'client not handshaken'    , 'unauthorized'  ];  /**   * Errors advice.   */  var advice = parser.advice = [      'reconnect'  ];  /**   * Shortcuts.   */  var JSON = io.JSON    , indexOf = io.util.indexOf;  /**   * Encodes a packet.   *   * @api private   */  parser.encodePacket = function (packet) {    var type = indexOf(packets, packet.type)      , id = packet.id || ''      , endpoint = packet.endpoint || ''      , ack = packet.ack      , data = null;    switch (packet.type) {      case 'error':        var reason = packet.reason ? indexOf(reasons, packet.reason) : ''          , adv = packet.advice ? indexOf(advice, packet.advice) : '';        if (reason !== '' || adv !== '')          data = reason + (adv !== '' ? ('+' + adv) : '');        break;      case 'message':        if (packet.data !== '')          data = packet.data;        break;      case 'event':        var ev = { name: packet.name };        if (packet.args && packet.args.length) {          ev.args = packet.args;        }        data = JSON.stringify(ev);        break;      case 'json':        data = JSON.stringify(packet.data);        break;      case 'connect':        if (packet.qs)          data = packet.qs;        break;      case 'ack':        data = packet.ackId          + (packet.args && packet.args.length              ? '+' + JSON.stringify(packet.args) : '');        break;    }    // construct packet with required fragments    var encoded = [        type      , id + (ack == 'data' ? '+' : '')      , endpoint    ];    // data fragment is optional    if (data !== null && data !== undefined)      encoded.push(data);    return encoded.join(':');  };  /**   * Encodes multiple messages (payload).   *   * @param {Array} messages   * @api private   */  parser.encodePayload = function (packets) {    var decoded = '';    if (packets.length == 1)      return packets[0];    for (var i = 0, l = packets.length; i < l; i++) {      var packet = packets[i];      decoded += '\ufffd' + packet.length + '\ufffd' + packets[i];    }    return decoded;  };  /**   * Decodes a packet   *   * @api private   */  var regexp = /([^:]+):([0-9]+)?(\+)?:([^:]+)?:?([\s\S]*)?/;  parser.decodePacket = function (data) {    var pieces = data.match(regexp);    if (!pieces) return {};    var id = pieces[2] || ''      , data = pieces[5] || ''      , packet = {            type: packets[pieces[1]]          , endpoint: pieces[4] || ''        };    // whether we need to acknowledge the packet    if (id) {      packet.id = id;      if (pieces[3])        packet.ack = 'data';      else        packet.ack = true;    }    // handle different packet types    switch (packet.type) {      case 'error':        var pieces = data.split('+');        packet.reason = reasons[pieces[0]] || '';        packet.advice = advice[pieces[1]] || '';        break;      case 'message':        packet.data = data || '';        break;      case 'event':        try {          var opts = JSON.parse(data);          packet.name = opts.name;          packet.args = opts.args;        } catch (e) { }        packet.args = packet.args || [];        break;      case 'json':        try {          packet.data = JSON.parse(data);        } catch (e) { }        break;      case 'connect':        packet.qs = data || '';        break;      case 'ack':        var pieces = data.match(/^([0-9]+)(\+)?(.*)/);        if (pieces) {          packet.ackId = pieces[1];          packet.args = [];          if (pieces[3]) {            try {              packet.args = pieces[3] ? JSON.parse(pieces[3]) : [];            } catch (e) { }          }        }        break;      case 'disconnect':      case 'heartbeat':        break;    };    return packet;  };  /**   * Decodes data payload. Detects multiple messages   *   * @return {Array} messages   * @api public   */  parser.decodePayload = function (data) {    // IE doesn't like data[i] for unicode chars, charAt works fine    if (data.charAt(0) == '\ufffd') {      var ret = [];      for (var i = 1, length = ''; i < data.length; i++) {        if (data.charAt(i) == '\ufffd') {          ret.push(parser.decodePacket(data.substr(i + 1).substr(0, length)));          i += Number(length) + 1;          length = '';        } else {          length += data.charAt(i);        }      }      return ret;    } else {      return [parser.decodePacket(data)];    }  };})(    'undefined' != typeof io ? io : module.exports  , 'undefined' != typeof io ? io : module.parent.exports);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io) {  /**   * Expose constructor.   */  exports.Transport = Transport;  /**   * This is the transport template for all supported transport methods.   *   * @constructor   * @api public   */  function Transport (socket, sessid) {    this.socket = socket;    this.sessid = sessid;  };  /**   * Apply EventEmitter mixin.   */  io.util.mixin(Transport, io.EventEmitter);  /**   * Indicates whether heartbeats is enabled for this transport   *   * @api private   */  Transport.prototype.heartbeats = function () {    return true;  };  /**   * Handles the response from the server. When a new response is received   * it will automatically update the timeout, decode the message and   * forwards the response to the onMessage function for further processing.   *   * @param {String} data Response from the server.   * @api private   */  Transport.prototype.onData = function (data) {    this.clearCloseTimeout();    // If the connection in currently open (or in a reopening state) reset the close    // timeout since we have just received data. This check is necessary so    // that we don't reset the timeout on an explicitly disconnected connection.    if (this.socket.connected || this.socket.connecting || this.socket.reconnecting) {      this.setCloseTimeout();    }    if (data !== '') {      // todo: we should only do decodePayload for xhr transports      var msgs = io.parser.decodePayload(data);      if (msgs && msgs.length) {        for (var i = 0, l = msgs.length; i < l; i++) {          this.onPacket(msgs[i]);        }      }    }    return this;  };  /**   * Handles packets.   *   * @api private   */  Transport.prototype.onPacket = function (packet) {    this.socket.setHeartbeatTimeout();    if (packet.type == 'heartbeat') {      return this.onHeartbeat();    }    if (packet.type == 'connect' && packet.endpoint == '') {      this.onConnect();    }    if (packet.type == 'error' && packet.advice == 'reconnect') {      this.isOpen = false;    }    this.socket.onPacket(packet);    return this;  };  /**   * Sets close timeout   *   * @api private   */  Transport.prototype.setCloseTimeout = function () {    if (!this.closeTimeout) {      var self = this;      this.closeTimeout = setTimeout(function () {        self.onDisconnect();      }, this.socket.closeTimeout);    }  };  /**   * Called when transport disconnects.   *   * @api private   */  Transport.prototype.onDisconnect = function () {    if (this.isOpen) this.close();    this.clearTimeouts();    this.socket.onDisconnect();    return this;  };  /**   * Called when transport connects   *   * @api private   */  Transport.prototype.onConnect = function () {    this.socket.onConnect();    return this;  };  /**   * Clears close timeout   *   * @api private   */  Transport.prototype.clearCloseTimeout = function () {    if (this.closeTimeout) {      clearTimeout(this.closeTimeout);      this.closeTimeout = null;    }  };  /**   * Clear timeouts   *   * @api private   */  Transport.prototype.clearTimeouts = function () {    this.clearCloseTimeout();    if (this.reopenTimeout) {      clearTimeout(this.reopenTimeout);    }  };  /**   * Sends a packet   *   * @param {Object} packet object.   * @api private   */  Transport.prototype.packet = function (packet) {    this.send(io.parser.encodePacket(packet));  };  /**   * Send the received heartbeat message back to server. So the server   * knows we are still connected.   *   * @param {String} heartbeat Heartbeat response from the server.   * @api private   */  Transport.prototype.onHeartbeat = function (heartbeat) {    this.packet({ type: 'heartbeat' });  };  /**   * Called when the transport opens.   *   * @api private   */  Transport.prototype.onOpen = function () {    this.isOpen = true;    this.clearCloseTimeout();    this.socket.onOpen();  };  /**   * Notifies the base when the connection with the Socket.IO server   * has been disconnected.   *   * @api private   */  Transport.prototype.onClose = function () {    var self = this;    /* FIXME: reopen delay causing a infinit loop    this.reopenTimeout = setTimeout(function () {      self.open();    }, this.socket.options['reopen delay']);*/    this.isOpen = false;    this.socket.onClose();    this.onDisconnect();  };  /**   * Generates a connection url based on the Socket.IO URL Protocol.   * See <https://github.com/learnboost/socket.io-node/> for more details.   *   * @returns {String} Connection url   * @api private   */  Transport.prototype.prepareUrl = function () {    var options = this.socket.options;    return this.scheme() + '://'      + options.host + ':' + options.port + '/'      + options.resource + '/' + io.protocol      + '/' + this.name + '/' + this.sessid;  };  /**   * Checks if the transport is ready to start a connection.   *   * @param {Socket} socket The socket instance that needs a transport   * @param {Function} fn The callback   * @api private   */  Transport.prototype.ready = function (socket, fn) {    fn.call(this);  };})(    'undefined' != typeof io ? io : module.exports  , 'undefined' != typeof io ? io : module.parent.exports);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io, global) {  /**   * Expose constructor.   */  exports.Socket = Socket;  /**   * Create a new `Socket.IO client` which can establish a persistent   * connection with a Socket.IO enabled server.   *   * @api public   */  function Socket (options) {    this.options = {        port: 80      , secure: false      , document: 'document' in global ? document : false      , resource: 'socket.io'      , transports: io.transports      , 'connect timeout': 10000      , 'try multiple transports': true      , 'reconnect': true      , 'reconnection delay': 500      , 'reconnection limit': Infinity      , 'reopen delay': 3000      , 'max reconnection attempts': 10      , 'sync disconnect on unload': false      , 'auto connect': true      , 'flash policy port': 10843      , 'manualFlush': false    };    io.util.merge(this.options, options);    this.connected = false;    this.open = false;    this.connecting = false;    this.reconnecting = false;    this.namespaces = {};    this.buffer = [];    this.doBuffer = false;    if (this.options['sync disconnect on unload'] &&        (!this.isXDomain() || io.util.ua.hasCORS)) {      var self = this;      io.util.on(global, 'beforeunload', function () {        self.disconnectSync();      }, false);    }    if (this.options['auto connect']) {      this.connect();    }};  /**   * Apply EventEmitter mixin.   */  io.util.mixin(Socket, io.EventEmitter);  /**   * Returns a namespace listener/emitter for this socket   *   * @api public   */  Socket.prototype.of = function (name) {    if (!this.namespaces[name]) {      this.namespaces[name] = new io.SocketNamespace(this, name);      if (name !== '') {        this.namespaces[name].packet({ type: 'connect' });      }    }    return this.namespaces[name];  };  /**   * Emits the given event to the Socket and all namespaces   *   * @api private   */  Socket.prototype.publish = function () {    this.emit.apply(this, arguments);    var nsp;    for (var i in this.namespaces) {      if (this.namespaces.hasOwnProperty(i)) {        nsp = this.of(i);        nsp.$emit.apply(nsp, arguments);      }    }  };  /**   * Performs the handshake   *   * @api private   */  function empty () { };  Socket.prototype.handshake = function (fn) {    var self = this      , options = this.options;    function complete (data) {      if (data instanceof Error) {        self.connecting = false;        self.onError(data.message);      } else {        fn.apply(null, data.split(':'));      }    };    var url = [          'http' + (options.secure ? 's' : '') + ':/'        , options.host + ':' + options.port        , options.resource        , io.protocol        , io.util.query(this.options.query, 't=' + +new Date)      ].join('/');    if (this.isXDomain() && !io.util.ua.hasCORS) {      var insertAt = document.getElementsByTagName('script')[0]        , script = document.createElement('script');      script.src = url + '&jsonp=' + io.j.length;      insertAt.parentNode.insertBefore(script, insertAt);      io.j.push(function (data) {        complete(data);        script.parentNode.removeChild(script);      });    } else {      var xhr = io.util.request();      xhr.open('GET', url, true);      if (this.isXDomain()) {        xhr.withCredentials = true;      }      xhr.onreadystatechange = function () {        if (xhr.readyState == 4) {          xhr.onreadystatechange = empty;          if (xhr.status == 200) {            complete(xhr.responseText);          } else if (xhr.status == 403) {            self.onError(xhr.responseText);          } else {            self.connecting = false;                        !self.reconnecting && self.onError(xhr.responseText);          }        }      };      xhr.send(null);    }  };  /**   * Find an available transport based on the options supplied in the constructor.   *   * @api private   */  Socket.prototype.getTransport = function (override) {    var transports = override || this.transports, match;    for (var i = 0, transport; transport = transports[i]; i++) {      if (io.Transport[transport]        && io.Transport[transport].check(this)        && (!this.isXDomain() || io.Transport[transport].xdomainCheck(this))) {        return new io.Transport[transport](this, this.sessionid);      }    }    return null;  };  /**   * Connects to the server.   *   * @param {Function} [fn] Callback.   * @returns {io.Socket}   * @api public   */  Socket.prototype.connect = function (fn) {    if (this.connecting) {      return this;    }    var self = this;    self.connecting = true;        this.handshake(function (sid, heartbeat, close, transports) {      self.sessionid = sid;      self.closeTimeout = close * 1000;      self.heartbeatTimeout = heartbeat * 1000;      if(!self.transports)          self.transports = self.origTransports = (transports ? io.util.intersect(              transports.split(',')            , self.options.transports          ) : self.options.transports);      self.setHeartbeatTimeout();      function connect (transports){        if (self.transport) self.transport.clearTimeouts();        self.transport = self.getTransport(transports);        if (!self.transport) return self.publish('connect_failed');        // once the transport is ready        self.transport.ready(self, function () {          self.connecting = true;          self.publish('connecting', self.transport.name);          self.transport.open();          if (self.options['connect timeout']) {            self.connectTimeoutTimer = setTimeout(function () {              if (!self.connected) {                self.connecting = false;                if (self.options['try multiple transports']) {                  var remaining = self.transports;                  while (remaining.length > 0 && remaining.splice(0,1)[0] !=                         self.transport.name) {}                    if (remaining.length){                      connect(remaining);                    } else {                      self.publish('connect_failed');                    }                }              }            }, self.options['connect timeout']);          }        });      }      connect(self.transports);      self.once('connect', function (){        clearTimeout(self.connectTimeoutTimer);        fn && typeof fn == 'function' && fn();      });    });    return this;  };  /**   * Clears and sets a new heartbeat timeout using the value given by the   * server during the handshake.   *   * @api private   */  Socket.prototype.setHeartbeatTimeout = function () {    clearTimeout(this.heartbeatTimeoutTimer);    if(this.transport && !this.transport.heartbeats()) return;    var self = this;    this.heartbeatTimeoutTimer = setTimeout(function () {      if(self.transport){        self.transport.onClose();      }    }, this.heartbeatTimeout);  };  /**   * Sends a message.   *   * @param {Object} data packet.   * @returns {io.Socket}   * @api public   */  Socket.prototype.packet = function (data) {    if (this.connected && !this.doBuffer) {      this.transport.packet(data);    } else {      this.buffer.push(data);    }    return this;  };  /**   * Sets buffer state   *   * @api private   */  Socket.prototype.setBuffer = function (v) {    this.doBuffer = v;    if (!v && this.connected && this.buffer.length) {      if (!this.options['manualFlush']) {        this.flushBuffer();      }    }  };  /**   * Flushes the buffer data over the wire.   * To be invoked manually when 'manualFlush' is set to true.   *   * @api public   */  Socket.prototype.flushBuffer = function() {    this.transport.payload(this.buffer);    this.buffer = [];  };    /**   * Disconnect the established connect.   *   * @returns {io.Socket}   * @api public   */  Socket.prototype.disconnect = function () {    if (this.connected || this.connecting) {      if (this.open) {        this.of('').packet({ type: 'disconnect' });      }      // handle disconnection immediately      this.onDisconnect('booted');    }    return this;  };  /**   * Disconnects the socket with a sync XHR.   *   * @api private   */  Socket.prototype.disconnectSync = function () {    // ensure disconnection    var xhr = io.util.request();    var uri = [        'http' + (this.options.secure ? 's' : '') + ':/'      , this.options.host + ':' + this.options.port      , this.options.resource      , io.protocol      , ''      , this.sessionid    ].join('/') + '/?disconnect=1';    xhr.open('GET', uri, false);    xhr.send(null);    // handle disconnection immediately    this.onDisconnect('booted');  };  /**   * Check if we need to use cross domain enabled transports. Cross domain would   * be a different port or different domain name.   *   * @returns {Boolean}   * @api private   */  Socket.prototype.isXDomain = function () {    var port = global.location.port ||      ('https:' == global.location.protocol ? 443 : 80);    return this.options.host !== global.location.hostname       || this.options.port != port;  };  /**   * Called upon handshake.   *   * @api private   */  Socket.prototype.onConnect = function () {    if (!this.connected) {      this.connected = true;      this.connecting = false;      if (!this.doBuffer) {        // make sure to flush the buffer        this.setBuffer(false);      }      this.emit('connect');    }  };  /**   * Called when the transport opens   *   * @api private   */  Socket.prototype.onOpen = function () {    this.open = true;  };  /**   * Called when the transport closes.   *   * @api private   */  Socket.prototype.onClose = function () {    this.open = false;    clearTimeout(this.heartbeatTimeoutTimer);  };  /**   * Called when the transport first opens a connection   *   * @param text   */  Socket.prototype.onPacket = function (packet) {    this.of(packet.endpoint).onPacket(packet);  };  /**   * Handles an error.   *   * @api private   */  Socket.prototype.onError = function (err) {    if (err && err.advice) {      if (err.advice === 'reconnect' && (this.connected || this.connecting)) {        this.disconnect();        if (this.options.reconnect) {          this.reconnect();        }      }    }    this.publish('error', err && err.reason ? err.reason : err);  };  /**   * Called when the transport disconnects.   *   * @api private   */  Socket.prototype.onDisconnect = function (reason) {    var wasConnected = this.connected      , wasConnecting = this.connecting;    this.connected = false;    this.connecting = false;    this.open = false;    if (wasConnected || wasConnecting) {      this.transport.close();      this.transport.clearTimeouts();      if (wasConnected) {        this.publish('disconnect', reason);        if ('booted' != reason && this.options.reconnect && !this.reconnecting) {          this.reconnect();        }      }    }  };  /**   * Called upon reconnection.   *   * @api private   */  Socket.prototype.reconnect = function () {    this.reconnecting = true;    this.reconnectionAttempts = 0;    this.reconnectionDelay = this.options['reconnection delay'];    var self = this      , maxAttempts = this.options['max reconnection attempts']      , tryMultiple = this.options['try multiple transports']      , limit = this.options['reconnection limit'];    function reset () {      if (self.connected) {        for (var i in self.namespaces) {          if (self.namespaces.hasOwnProperty(i) && '' !== i) {              self.namespaces[i].packet({ type: 'connect' });          }        }        self.publish('reconnect', self.transport.name, self.reconnectionAttempts);      }      clearTimeout(self.reconnectionTimer);      self.removeListener('connect_failed', maybeReconnect);      self.removeListener('connect', maybeReconnect);      self.reconnecting = false;      delete self.reconnectionAttempts;      delete self.reconnectionDelay;      delete self.reconnectionTimer;      delete self.redoTransports;      self.options['try multiple transports'] = tryMultiple;    };    function maybeReconnect () {      if (!self.reconnecting) {        return;      }      if (self.connected) {        return reset();      };      if (self.connecting && self.reconnecting) {        return self.reconnectionTimer = setTimeout(maybeReconnect, 1000);      }      if (self.reconnectionAttempts++ >= maxAttempts) {        if (!self.redoTransports) {          self.on('connect_failed', maybeReconnect);          self.options['try multiple transports'] = true;          self.transports = self.origTransports;          self.transport = self.getTransport();          self.redoTransports = true;          self.connect();        } else {          self.publish('reconnect_failed');          reset();        }      } else {        if (self.reconnectionDelay < limit) {          self.reconnectionDelay *= 2; // exponential back off        }        self.connect();        self.publish('reconnecting', self.reconnectionDelay, self.reconnectionAttempts);        self.reconnectionTimer = setTimeout(maybeReconnect, self.reconnectionDelay);      }    };    this.options['try multiple transports'] = false;    this.reconnectionTimer = setTimeout(maybeReconnect, this.reconnectionDelay);    this.on('connect', maybeReconnect);  };})(    'undefined' != typeof io ? io : module.exports  , 'undefined' != typeof io ? io : module.parent.exports  , this);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io) {  /**   * Expose constructor.   */  exports.SocketNamespace = SocketNamespace;  /**   * Socket namespace constructor.   *   * @constructor   * @api public   */  function SocketNamespace (socket, name) {    this.socket = socket;    this.name = name || '';    this.flags = {};    this.json = new Flag(this, 'json');    this.ackPackets = 0;    this.acks = {};  };  /**   * Apply EventEmitter mixin.   */  io.util.mixin(SocketNamespace, io.EventEmitter);  /**   * Copies emit since we override it   *   * @api private   */  SocketNamespace.prototype.$emit = io.EventEmitter.prototype.emit;  /**   * Creates a new namespace, by proxying the request to the socket. This   * allows us to use the synax as we do on the server.   *   * @api public   */  SocketNamespace.prototype.of = function () {    return this.socket.of.apply(this.socket, arguments);  };  /**   * Sends a packet.   *   * @api private   */  SocketNamespace.prototype.packet = function (packet) {    packet.endpoint = this.name;    this.socket.packet(packet);    this.flags = {};    return this;  };  /**   * Sends a message   *   * @api public   */  SocketNamespace.prototype.send = function (data, fn) {    var packet = {        type: this.flags.json ? 'json' : 'message'      , data: data    };    if ('function' == typeof fn) {      packet.id = ++this.ackPackets;      packet.ack = true;      this.acks[packet.id] = fn;    }    return this.packet(packet);  };  /**   * Emits an event   *   * @api public   */    SocketNamespace.prototype.emit = function (name) {    var args = Array.prototype.slice.call(arguments, 1)      , lastArg = args[args.length - 1]      , packet = {            type: 'event'          , name: name        };    if ('function' == typeof lastArg) {      packet.id = ++this.ackPackets;      packet.ack = 'data';      this.acks[packet.id] = lastArg;      args = args.slice(0, args.length - 1);    }    packet.args = args;    return this.packet(packet);  };  /**   * Disconnects the namespace   *   * @api private   */  SocketNamespace.prototype.disconnect = function () {    if (this.name === '') {      this.socket.disconnect();    } else {      this.packet({ type: 'disconnect' });      this.$emit('disconnect');    }    return this;  };  /**   * Handles a packet   *   * @api private   */  SocketNamespace.prototype.onPacket = function (packet) {    var self = this;    function ack () {      self.packet({          type: 'ack'        , args: io.util.toArray(arguments)        , ackId: packet.id      });    };    switch (packet.type) {      case 'connect':        this.$emit('connect');        break;      case 'disconnect':        if (this.name === '') {          this.socket.onDisconnect(packet.reason || 'booted');        } else {          this.$emit('disconnect', packet.reason);        }        break;      case 'message':      case 'json':        var params = ['message', packet.data];        if (packet.ack == 'data') {          params.push(ack);        } else if (packet.ack) {          this.packet({ type: 'ack', ackId: packet.id });        }        this.$emit.apply(this, params);        break;      case 'event':        var params = [packet.name].concat(packet.args);        if (packet.ack == 'data')          params.push(ack);        this.$emit.apply(this, params);        break;      case 'ack':        if (this.acks[packet.ackId]) {          this.acks[packet.ackId].apply(this, packet.args);          delete this.acks[packet.ackId];        }        break;      case 'error':        if (packet.advice){          this.socket.onError(packet);        } else {          if (packet.reason == 'unauthorized') {            this.$emit('connect_failed', packet.reason);          } else {            this.$emit('error', packet.reason);          }        }        break;    }  };  /**   * Flag interface.   *   * @api private   */  function Flag (nsp, name) {    this.namespace = nsp;    this.name = name;  };  /**   * Send a message   *   * @api public   */  Flag.prototype.send = function () {    this.namespace.flags[this.name] = true;    this.namespace.send.apply(this.namespace, arguments);  };  /**   * Emit an event   *   * @api public   */  Flag.prototype.emit = function () {    this.namespace.flags[this.name] = true;    this.namespace.emit.apply(this.namespace, arguments);  };})(    'undefined' != typeof io ? io : module.exports  , 'undefined' != typeof io ? io : module.parent.exports);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io, global) {  /**   * Expose constructor.   */  exports.websocket = WS;  /**   * The WebSocket transport uses the HTML5 WebSocket API to establish an   * persistent connection with the Socket.IO server. This transport will also   * be inherited by the FlashSocket fallback as it provides a API compatible   * polyfill for the WebSockets.   *   * @constructor   * @extends {io.Transport}   * @api public   */  function WS (socket) {    io.Transport.apply(this, arguments);  };  /**   * Inherits from Transport.   */  io.util.inherit(WS, io.Transport);  /**   * Transport name   *   * @api public   */  WS.prototype.name = 'websocket';  /**   * Initializes a new `WebSocket` connection with the Socket.IO server. We attach   * all the appropriate listeners to handle the responses from the server.   *   * @returns {Transport}   * @api public   */  WS.prototype.open = function () {    var query = io.util.query(this.socket.options.query)      , self = this      , Socket    if (!Socket) {      Socket = global.MozWebSocket || global.WebSocket;    }    this.websocket = new Socket(this.prepareUrl() + query);    this.websocket.onopen = function () {      self.onOpen();      self.socket.setBuffer(false);    };    this.websocket.onmessage = function (ev) {      self.onData(ev.data);    };    this.websocket.onclose = function () {      self.onClose();      self.socket.setBuffer(true);    };    this.websocket.onerror = function (e) {      self.onError(e);    };    return this;  };  /**   * Send a message to the Socket.IO server. The message will automatically be   * encoded in the correct message format.   *   * @returns {Transport}   * @api public   */  // Do to a bug in the current IDevices browser, we need to wrap the send in a   // setTimeout, when they resume from sleeping the browser will crash if   // we don't allow the browser time to detect the socket has been closed  if (io.util.ua.iDevice) {    WS.prototype.send = function (data) {      var self = this;      setTimeout(function() {         self.websocket.send(data);      },0);      return this;    };  } else {    WS.prototype.send = function (data) {      this.websocket.send(data);      return this;    };  }  /**   * Payload   *   * @api private   */  WS.prototype.payload = function (arr) {    for (var i = 0, l = arr.length; i < l; i++) {      this.packet(arr[i]);    }    return this;  };  /**   * Disconnect the established `WebSocket` connection.   *   * @returns {Transport}   * @api public   */  WS.prototype.close = function () {    this.websocket.close();    return this;  };  /**   * Handle the errors that `WebSocket` might be giving when we   * are attempting to connect or send messages.   *   * @param {Error} e The error.   * @api private   */  WS.prototype.onError = function (e) {    this.socket.onError(e);  };  /**   * Returns the appropriate scheme for the URI generation.   *   * @api private   */  WS.prototype.scheme = function () {    return this.socket.options.secure ? 'wss' : 'ws';  };  /**   * Checks if the browser has support for native `WebSockets` and that   * it's not the polyfill created for the FlashSocket transport.   *   * @return {Boolean}   * @api public   */  WS.check = function () {    return ('WebSocket' in global && !('__addTask' in WebSocket))          || 'MozWebSocket' in global;  };  /**   * Check if the `WebSocket` transport support cross domain communications.   *   * @returns {Boolean}   * @api public   */  WS.xdomainCheck = function () {    return true;  };  /**   * Add the transport to your public io.transports array.   *   * @api private   */  io.transports.push('websocket');})(    'undefined' != typeof io ? io.Transport : module.exports  , 'undefined' != typeof io ? io : module.parent.exports  , this);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io, global) {  /**   * Expose constructor.   *   * @api public   */  exports.XHR = XHR;  /**   * XHR constructor   *   * @costructor   * @api public   */  function XHR (socket) {    if (!socket) return;    io.Transport.apply(this, arguments);    this.sendBuffer = [];  };  /**   * Inherits from Transport.   */  io.util.inherit(XHR, io.Transport);  /**   * Establish a connection   *   * @returns {Transport}   * @api public   */  XHR.prototype.open = function () {    this.socket.setBuffer(false);    this.onOpen();    this.get();    // we need to make sure the request succeeds since we have no indication    // whether the request opened or not until it succeeded.    this.setCloseTimeout();    return this;  };  /**   * Check if we need to send data to the Socket.IO server, if we have data in our   * buffer we encode it and forward it to the `post` method.   *   * @api private   */  XHR.prototype.payload = function (payload) {    var msgs = [];    for (var i = 0, l = payload.length; i < l; i++) {      msgs.push(io.parser.encodePacket(payload[i]));    }    this.send(io.parser.encodePayload(msgs));  };  /**   * Send data to the Socket.IO server.   *   * @param data The message   * @returns {Transport}   * @api public   */  XHR.prototype.send = function (data) {    this.post(data);    return this;  };  /**   * Posts a encoded message to the Socket.IO server.   *   * @param {String} data A encoded message.   * @api private   */  function empty () { };  XHR.prototype.post = function (data) {    var self = this;    this.socket.setBuffer(true);    function stateChange () {      if (this.readyState == 4) {        this.onreadystatechange = empty;        self.posting = false;        if (this.status == 200){          self.socket.setBuffer(false);        } else {          self.onClose();        }      }    }    function onload () {      this.onload = empty;      self.socket.setBuffer(false);    };    this.sendXHR = this.request('POST');    if (global.XDomainRequest && this.sendXHR instanceof XDomainRequest) {      this.sendXHR.onload = this.sendXHR.onerror = onload;    } else {      this.sendXHR.onreadystatechange = stateChange;    }    this.sendXHR.send(data);  };  /**   * Disconnects the established `XHR` connection.   *   * @returns {Transport}   * @api public   */  XHR.prototype.close = function () {    this.onClose();    return this;  };  /**   * Generates a configured XHR request   *   * @param {String} url The url that needs to be requested.   * @param {String} method The method the request should use.   * @returns {XMLHttpRequest}   * @api private   */  XHR.prototype.request = function (method) {    var req = io.util.request(this.socket.isXDomain())      , query = io.util.query(this.socket.options.query, 't=' + +new Date);    req.open(method || 'GET', this.prepareUrl() + query, true);    if (method == 'POST') {      try {        if (req.setRequestHeader) {          req.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');        } else {          // XDomainRequest          req.contentType = 'text/plain';        }      } catch (e) {}    }    return req;  };  /**   * Returns the scheme to use for the transport URLs.   *   * @api private   */  XHR.prototype.scheme = function () {    return this.socket.options.secure ? 'https' : 'http';  };  /**   * Check if the XHR transports are supported   *   * @param {Boolean} xdomain Check if we support cross domain requests.   * @returns {Boolean}   * @api public   */  XHR.check = function (socket, xdomain) {    try {      var request = io.util.request(xdomain),          usesXDomReq = (global.XDomainRequest && request instanceof XDomainRequest),          socketProtocol = (socket && socket.options && socket.options.secure ? 'https:' : 'http:'),          isXProtocol = (global.location && socketProtocol != global.location.protocol);      if (request && !(usesXDomReq && isXProtocol)) {        return true;      }    } catch(e) {}    return false;  };  /**   * Check if the XHR transport supports cross domain requests.   *   * @returns {Boolean}   * @api public   */  XHR.xdomainCheck = function (socket) {    return XHR.check(socket, true);  };})(    'undefined' != typeof io ? io.Transport : module.exports  , 'undefined' != typeof io ? io : module.parent.exports  , this);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io) {  /**   * Expose constructor.   */  exports.htmlfile = HTMLFile;  /**   * The HTMLFile transport creates a `forever iframe` based transport   * for Internet Explorer. Regular forever iframe implementations will    * continuously trigger the browsers buzy indicators. If the forever iframe   * is created inside a `htmlfile` these indicators will not be trigged.   *   * @constructor   * @extends {io.Transport.XHR}   * @api public   */  function HTMLFile (socket) {    io.Transport.XHR.apply(this, arguments);  };  /**   * Inherits from XHR transport.   */  io.util.inherit(HTMLFile, io.Transport.XHR);  /**   * Transport name   *   * @api public   */  HTMLFile.prototype.name = 'htmlfile';  /**   * Creates a new Ac...eX `htmlfile` with a forever loading iframe   * that can be used to listen to messages. Inside the generated   * `htmlfile` a reference will be made to the HTMLFile transport.   *   * @api private   */  HTMLFile.prototype.get = function () {    this.doc = new window[(['Active'].concat('Object').join('X'))]('htmlfile');    this.doc.open();    this.doc.write('<html></html>');    this.doc.close();    this.doc.parentWindow.s = this;    var iframeC = this.doc.createElement('div');    iframeC.className = 'socketio';    this.doc.body.appendChild(iframeC);    this.iframe = this.doc.createElement('iframe');    iframeC.appendChild(this.iframe);    var self = this      , query = io.util.query(this.socket.options.query, 't='+ +new Date);    this.iframe.src = this.prepareUrl() + query;    io.util.on(window, 'unload', function () {      self.destroy();    });  };  /**   * The Socket.IO server will write script tags inside the forever   * iframe, this function will be used as callback for the incoming   * information.   *   * @param {String} data The message   * @param {document} doc Reference to the context   * @api private   */  HTMLFile.prototype._ = function (data, doc) {    this.onData(data);    try {      var script = doc.getElementsByTagName('script')[0];      script.parentNode.removeChild(script);    } catch (e) { }  };  /**   * Destroy the established connection, iframe and `htmlfile`.   * And calls the `CollectGarbage` function of Internet Explorer   * to release the memory.   *   * @api private   */  HTMLFile.prototype.destroy = function () {    if (this.iframe){      try {        this.iframe.src = 'about:blank';      } catch(e){}      this.doc = null;      this.iframe.parentNode.removeChild(this.iframe);      this.iframe = null;      CollectGarbage();    }  };  /**   * Disconnects the established connection.   *   * @returns {Transport} Chaining.   * @api public   */  HTMLFile.prototype.close = function () {    this.destroy();    return io.Transport.XHR.prototype.close.call(this);  };  /**   * Checks if the browser supports this transport. The browser   * must have an `Ac...eXObject` implementation.   *   * @return {Boolean}   * @api public   */  HTMLFile.check = function (socket) {    if (typeof window != "undefined" && (['Active'].concat('Object').join('X')) in window){      try {        var a = new window[(['Active'].concat('Object').join('X'))]('htmlfile');        return a && io.Transport.XHR.check(socket);      } catch(e){}    }    return false;  };  /**   * Check if cross domain requests are supported.   *   * @returns {Boolean}   * @api public   */  HTMLFile.xdomainCheck = function () {    // we can probably do handling for sub-domains, we should    // test that it's cross domain but a subdomain here    return false;  };  /**   * Add the transport to your public io.transports array.   *   * @api private   */  io.transports.push('htmlfile');})(    'undefined' != typeof io ? io.Transport : module.exports  , 'undefined' != typeof io ? io : module.parent.exports);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io, global) {  /**   * Expose constructor.   */  exports['xhr-polling'] = XHRPolling;  /**   * The XHR-polling transport uses long polling XHR requests to create a   * "persistent" connection with the server.   *   * @constructor   * @api public   */  function XHRPolling () {    io.Transport.XHR.apply(this, arguments);  };  /**   * Inherits from XHR transport.   */  io.util.inherit(XHRPolling, io.Transport.XHR);  /**   * Merge the properties from XHR transport   */  io.util.merge(XHRPolling, io.Transport.XHR);  /**   * Transport name   *   * @api public   */  XHRPolling.prototype.name = 'xhr-polling';  /**   * Indicates whether heartbeats is enabled for this transport   *   * @api private   */  XHRPolling.prototype.heartbeats = function () {    return false;  };  /**    * Establish a connection, for iPhone and Android this will be done once the page   * is loaded.   *   * @returns {Transport} Chaining.   * @api public   */  XHRPolling.prototype.open = function () {    var self = this;    io.Transport.XHR.prototype.open.call(self);    return false;  };  /**   * Starts a XHR request to wait for incoming messages.   *   * @api private   */  function empty () {};  XHRPolling.prototype.get = function () {    if (!this.isOpen) return;    var self = this;    function stateChange () {      if (this.readyState == 4) {        this.onreadystatechange = empty;        if (this.status == 200) {          self.onData(this.responseText);          self.get();        } else {          self.onClose();        }      }    };    function onload () {      this.onload = empty;      this.onerror = empty;      self.retryCounter = 1;      self.onData(this.responseText);      self.get();    };    function onerror () {      self.retryCounter ++;      if(!self.retryCounter || self.retryCounter > 3) {        self.onClose();        } else {        self.get();      }    };    this.xhr = this.request();    if (global.XDomainRequest && this.xhr instanceof XDomainRequest) {      this.xhr.onload = onload;      this.xhr.onerror = onerror;    } else {      this.xhr.onreadystatechange = stateChange;    }    this.xhr.send(null);  };  /**   * Handle the unclean close behavior.   *   * @api private   */  XHRPolling.prototype.onClose = function () {    io.Transport.XHR.prototype.onClose.call(this);    if (this.xhr) {      this.xhr.onreadystatechange = this.xhr.onload = this.xhr.onerror = empty;      try {        this.xhr.abort();      } catch(e){}      this.xhr = null;    }  };  /**   * Webkit based browsers show a infinit spinner when you start a XHR request   * before the browsers onload event is called so we need to defer opening of   * the transport until the onload event is called. Wrapping the cb in our   * defer method solve this.   *   * @param {Socket} socket The socket instance that needs a transport   * @param {Function} fn The callback   * @api private   */  XHRPolling.prototype.ready = function (socket, fn) {    var self = this;    io.util.defer(function () {      fn.call(self);    });  };  /**   * Add the transport to your public io.transports array.   *   * @api private   */  io.transports.push('xhr-polling');})(    'undefined' != typeof io ? io.Transport : module.exports  , 'undefined' != typeof io ? io : module.parent.exports  , this);/** * socket.io * Copyright(c) 2011 LearnBoost <[e-mail]> * MIT Licensed */(function (exports, io, global) {  /**   * There is a way to hide the loading indicator in Firefox. If you create and   * remove a iframe it will stop showing the current loading indicator.   * Unfortunately we can't feature detect that and UA sniffing is evil.   *   * @api private   */  var indicator = global.document && "MozAppearance" in    global.document.documentElement.style;  /**   * Expose constructor.   */  exports['jsonp-polling'] = JSONPPolling;  /**   * The JSONP transport creates an persistent connection by dynamically   * inserting a script tag in the page. This script tag will receive the   * information of the Socket.IO server. When new information is received   * it creates a new script tag for the new data stream.   *   * @constructor   * @extends {io.Transport.xhr-polling}   * @api public   */  function JSONPPolling (socket) {    io.Transport['xhr-polling'].apply(this, arguments);    this.index = io.j.length;    var self = this;    io.j.push(function (msg) {      self._(msg);    });  };  /**   * Inherits from XHR polling transport.   */  io.util.inherit(JSONPPolling, io.Transport['xhr-polling']);  /**   * Transport name   *   * @api public   */  JSONPPolling.prototype.name = 'jsonp-polling';  /**   * Posts a encoded message to the Socket.IO server using an iframe.   * The iframe is used because script tags can create POST based requests.   * The iframe is positioned outside of the view so the user does not   * notice it's existence.   *   * @param {String} data A encoded message.   * @api private   */  JSONPPolling.prototype.post = function (data) {    var self = this      , query = io.util.query(             this.socket.options.query          , 't='+ (+new Date) + '&i=' + this.index        );    if (!this.form) {      var form = document.createElement('form')        , area = document.createElement('textarea')        , id = this.iframeId = 'socketio_iframe_' + this.index        , iframe;      form.className = 'socketio';      form.style.position = 'absolute';      form.style.top = '0px';      form.style.left = '0px';      form.style.display = 'none';      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.prepareUrl() + query;    function complete () {      initIframe();      self.socket.setBuffer(false);    };    function initIframe () {      if (self.iframe) {        self.form.removeChild(self.iframe);      }      try {        // ie6 dynamic iframes with target="" support (thanks Chris Lambacher)        iframe = document.createElement('<iframe name="'+ self.iframeId +'">');      } catch (e) {        iframe = document.createElement('iframe');        iframe.name = self.iframeId;      }      iframe.id = self.iframeId;      self.form.appendChild(iframe);      self.iframe = iframe;    };    initIframe();    // we temporarily stringify until we figure out how to prevent    // browsers from turning `\n` into `\r\n` in form inputs    this.area.value = io.JSON.stringify(data);    try {      this.form.submit();    } catch(e) {}    if (this.iframe.attachEvent) {      iframe.onreadystatechange = function () {        if (self.iframe.readyState == 'complete') {          complete();        }      };    } else {      this.iframe.onload = complete;    }    this.socket.setBuffer(true);  };  /**   * Creates a new JSONP poll that can be used to listen   * for messages from the Socket.IO server.   *   * @api private   */  JSONPPolling.prototype.get = function () {    var self = this      , script = document.createElement('script')      , query = io.util.query(             this.socket.options.query          , 't='+ (+new Date) + '&i=' + this.index        );    if (this.script) {      this.script.parentNode.removeChild(this.script);      this.script = null;    }    script.async = true;    script.src = this.prepareUrl() + query;    script.onerror = function () {      self.onClose();    };    var insertAt = document.getElementsByTagName('script')[0];    insertAt.parentNode.insertBefore(script, insertAt);    this.script = script;    if (indicator) {      setTimeout(function () {        var iframe = document.createElement('iframe');        document.body.appendChild(iframe);        document.body.removeChild(iframe);      }, 100);    }  };  /**   * Callback function for the incoming message stream from the Socket.IO server.   *   * @param {String} data The message   * @api private   */  JSONPPolling.prototype._ = function (msg) {    this.onData(msg);    if (this.isOpen) {      this.get();    }    return this;  };  /**   * The indicator hack only works after onload   *   * @param {Socket} socket The socket instance that needs a transport   * @param {Function} fn The callback   * @api private   */  JSONPPolling.prototype.ready = function (socket, fn) {    var self = this;    if (!indicator) return fn.call(this);    io.util.load(function () {      fn.call(self);    });  };  /**   * Checks if browser supports this transport.   *   * @return {Boolean}   * @api public   */  JSONPPolling.check = function () {    return 'document' in global;  };  /**   * Check if cross domain requests are supported   *   * @returns {Boolean}   * @api public   */  JSONPPolling.xdomainCheck = function () {    return true;  };  /**   * Add the transport to your public io.transports array.   *   * @api private   */  io.transports.push('jsonp-polling');})(    'undefined' != typeof io ? io.Transport : module.exports  , 'undefined' != typeof io ? io : module.parent.exports  , this);/*if (typeof define === "function" && define.amd) {  define([], function () { return io; });}*/})();