cocos creator 下用的 socket-io（文件名）

if (!CC_JSB && !cc.sys.isNative) {
(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

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 ? true : 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        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 = 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) // 这句话相当于Array.slice.call(arguments)，目的是将arguments对象的数组提出来转化为数组，arguments本身并不是数组而是对象 , 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); // 至于什么时候使用call，什么时候使用apply,一般当参数比较明确的时候，两者都可以，当参数不明确时，推荐使用apply+arguments的方式。 } } 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) }); } </div> </div> </div> </div> </div>  <div id="SOHUCS" sid="1304991158354612224"></div> <script type="text/javascript" src="/views/front/js/chanyan.js"></script>  <div class="youdao-fixed-ad" id="detail_ad_bottom"></div> </div> <div class="col-md-3"> 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