7310 lines
475 KiB
JavaScript
7310 lines
475 KiB
JavaScript
(function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})({1:[function(require,module,exports){
|
||
const socket = require('./socket')
|
||
|
||
socket.on('client.display', (data) => {
|
||
let exists = document.getElementById(data.key)
|
||
|
||
if (exists) {
|
||
exists.tag.remove()
|
||
exists.remove()
|
||
}
|
||
|
||
let element = document.createElement('div')
|
||
element.innerHTML = data.html
|
||
element.id = data.key
|
||
element.classList.add('root-element')
|
||
|
||
let styleElement = document.createElement('style')
|
||
styleElement.setAttribute('type', 'text/css')
|
||
styleElement.innerHTML = data.css
|
||
|
||
element.tag = styleElement
|
||
|
||
document.body.appendChild(element)
|
||
document.head.appendChild(styleElement)
|
||
|
||
window.setTimeout(() => {
|
||
element.classList.add('root-element-display')
|
||
}, 50)
|
||
})
|
||
|
||
socket.on('client.hide', (data) => {
|
||
let exists = document.getElementById(data.key)
|
||
|
||
if (exists) {
|
||
exists.classList.remove('root-element-display')
|
||
|
||
window.setTimeout(() => {
|
||
exists.tag.remove()
|
||
exists.remove()
|
||
}, 1500)
|
||
}
|
||
})
|
||
|
||
},{"./socket":2}],2:[function(require,module,exports){
|
||
const io = require('socket.io-client')
|
||
|
||
const socket = io()
|
||
|
||
module.exports = socket
|
||
|
||
},{"socket.io-client":36}],3:[function(require,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() {}
|
||
|
||
},{}],4:[function(require,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;
|
||
};
|
||
|
||
},{}],5:[function(require,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;
|
||
};
|
||
|
||
|
||
},{}],6:[function(require,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+/");
|
||
|
||
},{}],7:[function(require,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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{}],8:[function(require,module,exports){
|
||
|
||
},{}],9:[function(require,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)));
|
||
}
|
||
};
|
||
|
||
},{}],10:[function(require,module,exports){
|
||
|
||
/**
|
||
* Expose `Emitter`.
|
||
*/
|
||
|
||
module.exports = Emitter;
|
||
|
||
/**
|
||
* Initialize a new `Emitter`.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
function Emitter(obj) {
|
||
if (obj) return mixin(obj);
|
||
};
|
||
|
||
/**
|
||
* Mixin the emitter properties.
|
||
*
|
||
* @param {Object} obj
|
||
* @return {Object}
|
||
* @api private
|
||
*/
|
||
|
||
function mixin(obj) {
|
||
for (var key in Emitter.prototype) {
|
||
obj[key] = Emitter.prototype[key];
|
||
}
|
||
return obj;
|
||
}
|
||
|
||
/**
|
||
* Listen on the given `event` with `fn`.
|
||
*
|
||
* @param {String} event
|
||
* @param {Function} fn
|
||
* @return {Emitter}
|
||
* @api public
|
||
*/
|
||
|
||
Emitter.prototype.on =
|
||
Emitter.prototype.addEventListener = function(event, fn){
|
||
this._callbacks = this._callbacks || {};
|
||
(this._callbacks[event] = this._callbacks[event] || [])
|
||
.push(fn);
|
||
return this;
|
||
};
|
||
|
||
/**
|
||
* Adds an `event` listener that will be invoked a single
|
||
* time then automatically removed.
|
||
*
|
||
* @param {String} event
|
||
* @param {Function} fn
|
||
* @return {Emitter}
|
||
* @api public
|
||
*/
|
||
|
||
Emitter.prototype.once = function(event, fn){
|
||
var self = this;
|
||
this._callbacks = this._callbacks || {};
|
||
|
||
function on() {
|
||
self.off(event, on);
|
||
fn.apply(this, arguments);
|
||
}
|
||
|
||
on.fn = fn;
|
||
this.on(event, on);
|
||
return this;
|
||
};
|
||
|
||
/**
|
||
* Remove the given callback for `event` or all
|
||
* registered callbacks.
|
||
*
|
||
* @param {String} event
|
||
* @param {Function} fn
|
||
* @return {Emitter}
|
||
* @api public
|
||
*/
|
||
|
||
Emitter.prototype.off =
|
||
Emitter.prototype.removeListener =
|
||
Emitter.prototype.removeAllListeners =
|
||
Emitter.prototype.removeEventListener = function(event, fn){
|
||
this._callbacks = this._callbacks || {};
|
||
|
||
// all
|
||
if (0 == arguments.length) {
|
||
this._callbacks = {};
|
||
return this;
|
||
}
|
||
|
||
// specific event
|
||
var callbacks = this._callbacks[event];
|
||
if (!callbacks) return this;
|
||
|
||
// remove all handlers
|
||
if (1 == arguments.length) {
|
||
delete this._callbacks[event];
|
||
return this;
|
||
}
|
||
|
||
// remove specific handler
|
||
var cb;
|
||
for (var i = 0; i < callbacks.length; i++) {
|
||
cb = callbacks[i];
|
||
if (cb === fn || cb.fn === fn) {
|
||
callbacks.splice(i, 1);
|
||
break;
|
||
}
|
||
}
|
||
return this;
|
||
};
|
||
|
||
/**
|
||
* Emit `event` with the given args.
|
||
*
|
||
* @param {String} event
|
||
* @param {Mixed} ...
|
||
* @return {Emitter}
|
||
*/
|
||
|
||
Emitter.prototype.emit = function(event){
|
||
this._callbacks = this._callbacks || {};
|
||
var args = [].slice.call(arguments, 1)
|
||
, callbacks = this._callbacks[event];
|
||
|
||
if (callbacks) {
|
||
callbacks = callbacks.slice(0);
|
||
for (var i = 0, len = callbacks.length; i < len; ++i) {
|
||
callbacks[i].apply(this, args);
|
||
}
|
||
}
|
||
|
||
return this;
|
||
};
|
||
|
||
/**
|
||
* Return array of callbacks for `event`.
|
||
*
|
||
* @param {String} event
|
||
* @return {Array}
|
||
* @api public
|
||
*/
|
||
|
||
Emitter.prototype.listeners = function(event){
|
||
this._callbacks = this._callbacks || {};
|
||
return this._callbacks[event] || [];
|
||
};
|
||
|
||
/**
|
||
* Check if this emitter has `event` handlers.
|
||
*
|
||
* @param {String} event
|
||
* @return {Boolean}
|
||
* @api public
|
||
*/
|
||
|
||
Emitter.prototype.hasListeners = function(event){
|
||
return !! this.listeners(event).length;
|
||
};
|
||
|
||
},{}],11:[function(require,module,exports){
|
||
|
||
module.exports = function(a, b){
|
||
var fn = function(){};
|
||
fn.prototype = b.prototype;
|
||
a.prototype = new fn;
|
||
a.prototype.constructor = a;
|
||
};
|
||
},{}],12:[function(require,module,exports){
|
||
|
||
/**
|
||
* This is the web browser implementation of `debug()`.
|
||
*
|
||
* Expose `debug()` as the module.
|
||
*/
|
||
|
||
exports = module.exports = require('./debug');
|
||
exports.log = log;
|
||
exports.formatArgs = formatArgs;
|
||
exports.save = save;
|
||
exports.load = load;
|
||
exports.useColors = useColors;
|
||
exports.storage = 'undefined' != typeof chrome
|
||
&& 'undefined' != typeof chrome.storage
|
||
? chrome.storage.local
|
||
: localstorage();
|
||
|
||
/**
|
||
* Colors.
|
||
*/
|
||
|
||
exports.colors = [
|
||
'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":13}],13:[function(require,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 = require('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":32}],14:[function(require,module,exports){
|
||
|
||
module.exports = require('./lib/');
|
||
|
||
},{"./lib/":15}],15:[function(require,module,exports){
|
||
|
||
module.exports = require('./socket');
|
||
|
||
/**
|
||
* Exports parser
|
||
*
|
||
* @api public
|
||
*
|
||
*/
|
||
module.exports.parser = require('engine.io-parser');
|
||
|
||
},{"./socket":16,"engine.io-parser":24}],16:[function(require,module,exports){
|
||
(function (global){
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var transports = require('./transports');
|
||
var Emitter = require('component-emitter');
|
||
var debug = require('debug')('engine.io-client:socket');
|
||
var index = require('indexof');
|
||
var parser = require('engine.io-parser');
|
||
var parseuri = require('parseuri');
|
||
var parsejson = require('parsejson');
|
||
var parseqs = require('parseqs');
|
||
|
||
/**
|
||
* Module exports.
|
||
*/
|
||
|
||
module.exports = Socket;
|
||
|
||
/**
|
||
* Noop function.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
function noop(){}
|
||
|
||
/**
|
||
* Socket constructor.
|
||
*
|
||
* @param {String|Object} uri or options
|
||
* @param {Object} options
|
||
* @api public
|
||
*/
|
||
|
||
function Socket(uri, opts){
|
||
if (!(this instanceof Socket)) return new Socket(uri, opts);
|
||
|
||
opts = opts || {};
|
||
|
||
if (uri && 'object' == typeof uri) {
|
||
opts = uri;
|
||
uri = null;
|
||
}
|
||
|
||
if (uri) {
|
||
uri = parseuri(uri);
|
||
opts.hostname = uri.host;
|
||
opts.secure = uri.protocol == 'https' || uri.protocol == 'wss';
|
||
opts.port = uri.port;
|
||
if (uri.query) opts.query = uri.query;
|
||
} else if (opts.host) {
|
||
opts.hostname = parseuri(opts.host).host;
|
||
}
|
||
|
||
this.secure = null != opts.secure ? opts.secure :
|
||
(global.location && 'https:' == location.protocol);
|
||
|
||
if (opts.hostname && !opts.port) {
|
||
// if no port is specified manually, use the protocol default
|
||
opts.port = this.secure ? '443' : '80';
|
||
}
|
||
|
||
this.agent = opts.agent || false;
|
||
this.hostname = opts.hostname ||
|
||
(global.location ? location.hostname : 'localhost');
|
||
this.port = opts.port || (global.location && location.port ?
|
||
location.port :
|
||
(this.secure ? 443 : 80));
|
||
this.query = opts.query || {};
|
||
if ('string' == typeof this.query) this.query = parseqs.decode(this.query);
|
||
this.upgrade = false !== opts.upgrade;
|
||
this.path = (opts.path || '/engine.io').replace(/\/$/, '') + '/';
|
||
this.forceJSONP = !!opts.forceJSONP;
|
||
this.jsonp = false !== opts.jsonp;
|
||
this.forceBase64 = !!opts.forceBase64;
|
||
this.enablesXDR = !!opts.enablesXDR;
|
||
this.timestampParam = opts.timestampParam || 't';
|
||
this.timestampRequests = opts.timestampRequests;
|
||
this.transports = opts.transports || ['polling', 'websocket'];
|
||
this.readyState = '';
|
||
this.writeBuffer = [];
|
||
this.policyPort = opts.policyPort || 843;
|
||
this.rememberUpgrade = opts.rememberUpgrade || false;
|
||
this.binaryType = null;
|
||
this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;
|
||
this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false;
|
||
|
||
if (true === this.perMessageDeflate) this.perMessageDeflate = {};
|
||
if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) {
|
||
this.perMessageDeflate.threshold = 1024;
|
||
}
|
||
|
||
// SSL options for Node.js client
|
||
this.pfx = opts.pfx || null;
|
||
this.key = opts.key || null;
|
||
this.passphrase = opts.passphrase || null;
|
||
this.cert = opts.cert || null;
|
||
this.ca = opts.ca || null;
|
||
this.ciphers = opts.ciphers || null;
|
||
this.rejectUnauthorized = opts.rejectUnauthorized === undefined ? null : opts.rejectUnauthorized;
|
||
|
||
// other options for Node.js client
|
||
var freeGlobal = typeof global == 'object' && global;
|
||
if (freeGlobal.global === freeGlobal) {
|
||
if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {
|
||
this.extraHeaders = opts.extraHeaders;
|
||
}
|
||
}
|
||
|
||
this.open();
|
||
}
|
||
|
||
Socket.priorWebsocketSuccess = false;
|
||
|
||
/**
|
||
* Mix in `Emitter`.
|
||
*/
|
||
|
||
Emitter(Socket.prototype);
|
||
|
||
/**
|
||
* Protocol version.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
Socket.protocol = parser.protocol; // this is an int
|
||
|
||
/**
|
||
* Expose deps for legacy compatibility
|
||
* and standalone browser access.
|
||
*/
|
||
|
||
Socket.Socket = Socket;
|
||
Socket.Transport = require('./transport');
|
||
Socket.transports = require('./transports');
|
||
Socket.parser = require('engine.io-parser');
|
||
|
||
/**
|
||
* Creates transport of the given type.
|
||
*
|
||
* @param {String} transport name
|
||
* @return {Transport}
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.createTransport = function (name) {
|
||
debug('creating transport "%s"', name);
|
||
var query = clone(this.query);
|
||
|
||
// append engine.io protocol identifier
|
||
query.EIO = parser.protocol;
|
||
|
||
// transport name
|
||
query.transport = name;
|
||
|
||
// session id if we already have one
|
||
if (this.id) query.sid = this.id;
|
||
|
||
var transport = new transports[name]({
|
||
agent: this.agent,
|
||
hostname: this.hostname,
|
||
port: this.port,
|
||
secure: this.secure,
|
||
path: this.path,
|
||
query: query,
|
||
forceJSONP: this.forceJSONP,
|
||
jsonp: this.jsonp,
|
||
forceBase64: this.forceBase64,
|
||
enablesXDR: this.enablesXDR,
|
||
timestampRequests: this.timestampRequests,
|
||
timestampParam: this.timestampParam,
|
||
policyPort: this.policyPort,
|
||
socket: this,
|
||
pfx: this.pfx,
|
||
key: this.key,
|
||
passphrase: this.passphrase,
|
||
cert: this.cert,
|
||
ca: this.ca,
|
||
ciphers: this.ciphers,
|
||
rejectUnauthorized: this.rejectUnauthorized,
|
||
perMessageDeflate: this.perMessageDeflate,
|
||
extraHeaders: this.extraHeaders
|
||
});
|
||
|
||
return transport;
|
||
};
|
||
|
||
function clone (obj) {
|
||
var o = {};
|
||
for (var i in obj) {
|
||
if (obj.hasOwnProperty(i)) {
|
||
o[i] = obj[i];
|
||
}
|
||
}
|
||
return o;
|
||
}
|
||
|
||
/**
|
||
* Initializes transport to use and starts probe.
|
||
*
|
||
* @api private
|
||
*/
|
||
Socket.prototype.open = function () {
|
||
var transport;
|
||
if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') != -1) {
|
||
transport = 'websocket';
|
||
} else if (0 === this.transports.length) {
|
||
// Emit error on next tick so it can be listened to
|
||
var self = this;
|
||
setTimeout(function() {
|
||
self.emit('error', 'No transports available');
|
||
}, 0);
|
||
return;
|
||
} else {
|
||
transport = this.transports[0];
|
||
}
|
||
this.readyState = 'opening';
|
||
|
||
// Retry with the next transport if the transport is disabled (jsonp: false)
|
||
try {
|
||
transport = this.createTransport(transport);
|
||
} catch (e) {
|
||
this.transports.shift();
|
||
this.open();
|
||
return;
|
||
}
|
||
|
||
transport.open();
|
||
this.setTransport(transport);
|
||
};
|
||
|
||
/**
|
||
* Sets the current transport. Disables the existing one (if any).
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.setTransport = function(transport){
|
||
debug('setting transport %s', transport.name);
|
||
var self = this;
|
||
|
||
if (this.transport) {
|
||
debug('clearing existing transport %s', this.transport.name);
|
||
this.transport.removeAllListeners();
|
||
}
|
||
|
||
// set up transport
|
||
this.transport = transport;
|
||
|
||
// set up transport listeners
|
||
transport
|
||
.on('drain', function(){
|
||
self.onDrain();
|
||
})
|
||
.on('packet', function(packet){
|
||
self.onPacket(packet);
|
||
})
|
||
.on('error', function(e){
|
||
self.onError(e);
|
||
})
|
||
.on('close', function(){
|
||
self.onClose('transport close');
|
||
});
|
||
};
|
||
|
||
/**
|
||
* Probes a transport.
|
||
*
|
||
* @param {String} transport name
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.probe = function (name) {
|
||
debug('probing transport "%s"', name);
|
||
var transport = this.createTransport(name, { probe: 1 })
|
||
, failed = false
|
||
, self = this;
|
||
|
||
Socket.priorWebsocketSuccess = false;
|
||
|
||
function onTransportOpen(){
|
||
if (self.onlyBinaryUpgrades) {
|
||
var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;
|
||
failed = failed || upgradeLosesBinary;
|
||
}
|
||
if (failed) return;
|
||
|
||
debug('probe transport "%s" opened', name);
|
||
transport.send([{ type: 'ping', data: 'probe' }]);
|
||
transport.once('packet', function (msg) {
|
||
if (failed) return;
|
||
if ('pong' == msg.type && 'probe' == msg.data) {
|
||
debug('probe transport "%s" pong', name);
|
||
self.upgrading = true;
|
||
self.emit('upgrading', transport);
|
||
if (!transport) return;
|
||
Socket.priorWebsocketSuccess = 'websocket' == transport.name;
|
||
|
||
debug('pausing current transport "%s"', self.transport.name);
|
||
self.transport.pause(function () {
|
||
if (failed) return;
|
||
if ('closed' == self.readyState) return;
|
||
debug('changing transport and sending upgrade packet');
|
||
|
||
cleanup();
|
||
|
||
self.setTransport(transport);
|
||
transport.send([{ type: 'upgrade' }]);
|
||
self.emit('upgrade', transport);
|
||
transport = null;
|
||
self.upgrading = false;
|
||
self.flush();
|
||
});
|
||
} else {
|
||
debug('probe transport "%s" failed', name);
|
||
var err = new Error('probe error');
|
||
err.transport = transport.name;
|
||
self.emit('upgradeError', err);
|
||
}
|
||
});
|
||
}
|
||
|
||
function freezeTransport() {
|
||
if (failed) return;
|
||
|
||
// Any callback called by transport should be ignored since now
|
||
failed = true;
|
||
|
||
cleanup();
|
||
|
||
transport.close();
|
||
transport = null;
|
||
}
|
||
|
||
//Handle any error that happens while probing
|
||
function onerror(err) {
|
||
var error = new Error('probe error: ' + err);
|
||
error.transport = transport.name;
|
||
|
||
freezeTransport();
|
||
|
||
debug('probe transport "%s" failed because of error: %s', name, err);
|
||
|
||
self.emit('upgradeError', error);
|
||
}
|
||
|
||
function onTransportClose(){
|
||
onerror("transport closed");
|
||
}
|
||
|
||
//When the socket is closed while we're probing
|
||
function onclose(){
|
||
onerror("socket closed");
|
||
}
|
||
|
||
//When the socket is upgraded while we're probing
|
||
function onupgrade(to){
|
||
if (transport && to.name != transport.name) {
|
||
debug('"%s" works - aborting "%s"', to.name, transport.name);
|
||
freezeTransport();
|
||
}
|
||
}
|
||
|
||
//Remove all listeners on the transport and on self
|
||
function cleanup(){
|
||
transport.removeListener('open', onTransportOpen);
|
||
transport.removeListener('error', onerror);
|
||
transport.removeListener('close', onTransportClose);
|
||
self.removeListener('close', onclose);
|
||
self.removeListener('upgrading', onupgrade);
|
||
}
|
||
|
||
transport.once('open', onTransportOpen);
|
||
transport.once('error', onerror);
|
||
transport.once('close', onTransportClose);
|
||
|
||
this.once('close', onclose);
|
||
this.once('upgrading', onupgrade);
|
||
|
||
transport.open();
|
||
|
||
};
|
||
|
||
/**
|
||
* Called when connection is deemed open.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
Socket.prototype.onOpen = function () {
|
||
debug('socket open');
|
||
this.readyState = 'open';
|
||
Socket.priorWebsocketSuccess = 'websocket' == this.transport.name;
|
||
this.emit('open');
|
||
this.flush();
|
||
|
||
// we check for `readyState` in case an `open`
|
||
// listener already closed the socket
|
||
if ('open' == this.readyState && this.upgrade && this.transport.pause) {
|
||
debug('starting upgrade probes');
|
||
for (var i = 0, l = this.upgrades.length; i < l; i++) {
|
||
this.probe(this.upgrades[i]);
|
||
}
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Handles a packet.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.onPacket = function (packet) {
|
||
if ('opening' == this.readyState || 'open' == this.readyState) {
|
||
debug('socket receive: type "%s", data "%s"', packet.type, packet.data);
|
||
|
||
this.emit('packet', packet);
|
||
|
||
// Socket is live - any packet counts
|
||
this.emit('heartbeat');
|
||
|
||
switch (packet.type) {
|
||
case 'open':
|
||
this.onHandshake(parsejson(packet.data));
|
||
break;
|
||
|
||
case 'pong':
|
||
this.setPing();
|
||
this.emit('pong');
|
||
break;
|
||
|
||
case 'error':
|
||
var err = new Error('server error');
|
||
err.code = packet.data;
|
||
this.onError(err);
|
||
break;
|
||
|
||
case 'message':
|
||
this.emit('data', packet.data);
|
||
this.emit('message', packet.data);
|
||
break;
|
||
}
|
||
} else {
|
||
debug('packet received with socket readyState "%s"', this.readyState);
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Called upon handshake completion.
|
||
*
|
||
* @param {Object} handshake obj
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.onHandshake = function (data) {
|
||
this.emit('handshake', data);
|
||
this.id = data.sid;
|
||
this.transport.query.sid = data.sid;
|
||
this.upgrades = this.filterUpgrades(data.upgrades);
|
||
this.pingInterval = data.pingInterval;
|
||
this.pingTimeout = data.pingTimeout;
|
||
this.onOpen();
|
||
// In case open handler closes socket
|
||
if ('closed' == this.readyState) return;
|
||
this.setPing();
|
||
|
||
// Prolong liveness of socket on heartbeat
|
||
this.removeListener('heartbeat', this.onHeartbeat);
|
||
this.on('heartbeat', this.onHeartbeat);
|
||
};
|
||
|
||
/**
|
||
* Resets ping timeout.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.onHeartbeat = function (timeout) {
|
||
clearTimeout(this.pingTimeoutTimer);
|
||
var self = this;
|
||
self.pingTimeoutTimer = setTimeout(function () {
|
||
if ('closed' == self.readyState) return;
|
||
self.onClose('ping timeout');
|
||
}, timeout || (self.pingInterval + self.pingTimeout));
|
||
};
|
||
|
||
/**
|
||
* Pings server every `this.pingInterval` and expects response
|
||
* within `this.pingTimeout` or closes connection.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.setPing = function () {
|
||
var self = this;
|
||
clearTimeout(self.pingIntervalTimer);
|
||
self.pingIntervalTimer = setTimeout(function () {
|
||
debug('writing ping packet - expecting pong within %sms', self.pingTimeout);
|
||
self.ping();
|
||
self.onHeartbeat(self.pingTimeout);
|
||
}, self.pingInterval);
|
||
};
|
||
|
||
/**
|
||
* Sends a ping packet.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.ping = function () {
|
||
var self = this;
|
||
this.sendPacket('ping', function(){
|
||
self.emit('ping');
|
||
});
|
||
};
|
||
|
||
/**
|
||
* Called on `drain` event
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.onDrain = function() {
|
||
this.writeBuffer.splice(0, this.prevBufferLen);
|
||
|
||
// setting prevBufferLen = 0 is very important
|
||
// for example, when upgrading, upgrade packet is sent over,
|
||
// and a nonzero prevBufferLen could cause problems on `drain`
|
||
this.prevBufferLen = 0;
|
||
|
||
if (0 === this.writeBuffer.length) {
|
||
this.emit('drain');
|
||
} else {
|
||
this.flush();
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Flush write buffers.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.flush = function () {
|
||
if ('closed' != this.readyState && this.transport.writable &&
|
||
!this.upgrading && this.writeBuffer.length) {
|
||
debug('flushing %d packets in socket', this.writeBuffer.length);
|
||
this.transport.send(this.writeBuffer);
|
||
// keep track of current length of writeBuffer
|
||
// splice writeBuffer and callbackBuffer on `drain`
|
||
this.prevBufferLen = this.writeBuffer.length;
|
||
this.emit('flush');
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Sends a message.
|
||
*
|
||
* @param {String} message.
|
||
* @param {Function} callback function.
|
||
* @param {Object} options.
|
||
* @return {Socket} for chaining.
|
||
* @api public
|
||
*/
|
||
|
||
Socket.prototype.write =
|
||
Socket.prototype.send = function (msg, options, fn) {
|
||
this.sendPacket('message', msg, options, fn);
|
||
return this;
|
||
};
|
||
|
||
/**
|
||
* Sends a packet.
|
||
*
|
||
* @param {String} packet type.
|
||
* @param {String} data.
|
||
* @param {Object} options.
|
||
* @param {Function} callback function.
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.sendPacket = function (type, data, options, fn) {
|
||
if('function' == typeof data) {
|
||
fn = data;
|
||
data = undefined;
|
||
}
|
||
|
||
if ('function' == typeof options) {
|
||
fn = options;
|
||
options = null;
|
||
}
|
||
|
||
if ('closing' == this.readyState || 'closed' == this.readyState) {
|
||
return;
|
||
}
|
||
|
||
options = options || {};
|
||
options.compress = false !== options.compress;
|
||
|
||
var packet = {
|
||
type: type,
|
||
data: data,
|
||
options: options
|
||
};
|
||
this.emit('packetCreate', packet);
|
||
this.writeBuffer.push(packet);
|
||
if (fn) this.once('flush', fn);
|
||
this.flush();
|
||
};
|
||
|
||
/**
|
||
* Closes the connection.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.close = function () {
|
||
if ('opening' == this.readyState || 'open' == this.readyState) {
|
||
this.readyState = 'closing';
|
||
|
||
var self = this;
|
||
|
||
if (this.writeBuffer.length) {
|
||
this.once('drain', function() {
|
||
if (this.upgrading) {
|
||
waitForUpgrade();
|
||
} else {
|
||
close();
|
||
}
|
||
});
|
||
} else if (this.upgrading) {
|
||
waitForUpgrade();
|
||
} else {
|
||
close();
|
||
}
|
||
}
|
||
|
||
function close() {
|
||
self.onClose('forced close');
|
||
debug('socket closing - telling transport to close');
|
||
self.transport.close();
|
||
}
|
||
|
||
function cleanupAndClose() {
|
||
self.removeListener('upgrade', cleanupAndClose);
|
||
self.removeListener('upgradeError', cleanupAndClose);
|
||
close();
|
||
}
|
||
|
||
function waitForUpgrade() {
|
||
// wait for upgrade to finish since we can't send packets while pausing a transport
|
||
self.once('upgrade', cleanupAndClose);
|
||
self.once('upgradeError', cleanupAndClose);
|
||
}
|
||
|
||
return this;
|
||
};
|
||
|
||
/**
|
||
* Called upon transport error
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.onError = function (err) {
|
||
debug('socket error %j', err);
|
||
Socket.priorWebsocketSuccess = false;
|
||
this.emit('error', err);
|
||
this.onClose('transport error', err);
|
||
};
|
||
|
||
/**
|
||
* Called upon transport close.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Socket.prototype.onClose = function (reason, desc) {
|
||
if ('opening' == this.readyState || 'open' == this.readyState || 'closing' == this.readyState) {
|
||
debug('socket close with reason: "%s"', reason);
|
||
var self = this;
|
||
|
||
// clear timers
|
||
clearTimeout(this.pingIntervalTimer);
|
||
clearTimeout(this.pingTimeoutTimer);
|
||
|
||
// stop event from firing again for transport
|
||
this.transport.removeAllListeners('close');
|
||
|
||
// ensure transport won't stay open
|
||
this.transport.close();
|
||
|
||
// ignore further transport communication
|
||
this.transport.removeAllListeners();
|
||
|
||
// set ready state
|
||
this.readyState = 'closed';
|
||
|
||
// clear session id
|
||
this.id = null;
|
||
|
||
// emit close event
|
||
this.emit('close', reason, desc);
|
||
|
||
// clean buffers after, so users can still
|
||
// grab the buffers on `close` event
|
||
self.writeBuffer = [];
|
||
self.prevBufferLen = 0;
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Filters upgrades, returning only those matching client transports.
|
||
*
|
||
* @param {Array} server upgrades
|
||
* @api private
|
||
*
|
||
*/
|
||
|
||
Socket.prototype.filterUpgrades = function (upgrades) {
|
||
var filteredUpgrades = [];
|
||
for (var i = 0, j = upgrades.length; i<j; i++) {
|
||
if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);
|
||
}
|
||
return filteredUpgrades;
|
||
};
|
||
|
||
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"./transport":17,"./transports":18,"component-emitter":10,"debug":12,"engine.io-parser":24,"indexof":31,"parsejson":33,"parseqs":34,"parseuri":35}],17:[function(require,module,exports){
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var parser = require('engine.io-parser');
|
||
var Emitter = require('component-emitter');
|
||
|
||
/**
|
||
* Module exports.
|
||
*/
|
||
|
||
module.exports = Transport;
|
||
|
||
/**
|
||
* Transport abstract constructor.
|
||
*
|
||
* @param {Object} options.
|
||
* @api private
|
||
*/
|
||
|
||
function Transport (opts) {
|
||
this.path = opts.path;
|
||
this.hostname = opts.hostname;
|
||
this.port = opts.port;
|
||
this.secure = opts.secure;
|
||
this.query = opts.query;
|
||
this.timestampParam = opts.timestampParam;
|
||
this.timestampRequests = opts.timestampRequests;
|
||
this.readyState = '';
|
||
this.agent = opts.agent || false;
|
||
this.socket = opts.socket;
|
||
this.enablesXDR = opts.enablesXDR;
|
||
|
||
// SSL options for Node.js client
|
||
this.pfx = opts.pfx;
|
||
this.key = opts.key;
|
||
this.passphrase = opts.passphrase;
|
||
this.cert = opts.cert;
|
||
this.ca = opts.ca;
|
||
this.ciphers = opts.ciphers;
|
||
this.rejectUnauthorized = opts.rejectUnauthorized;
|
||
|
||
// 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":10,"engine.io-parser":24}],18:[function(require,module,exports){
|
||
(function (global){
|
||
/**
|
||
* Module dependencies
|
||
*/
|
||
|
||
var XMLHttpRequest = require('xmlhttprequest-ssl');
|
||
var XHR = require('./polling-xhr');
|
||
var JSONP = require('./polling-jsonp');
|
||
var websocket = require('./websocket');
|
||
|
||
/**
|
||
* Export transports.
|
||
*/
|
||
|
||
exports.polling = polling;
|
||
exports.websocket = websocket;
|
||
|
||
/**
|
||
* Polling transport polymorphic constructor.
|
||
* Decides on xhr vs jsonp based on feature detection.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
function polling(opts){
|
||
var xhr;
|
||
var xd = false;
|
||
var xs = false;
|
||
var jsonp = false !== opts.jsonp;
|
||
|
||
if (global.location) {
|
||
var isSSL = 'https:' == location.protocol;
|
||
var port = location.port;
|
||
|
||
// some user agents have empty `location.port`
|
||
if (!port) {
|
||
port = isSSL ? 443 : 80;
|
||
}
|
||
|
||
xd = opts.hostname != location.hostname || port != opts.port;
|
||
xs = opts.secure != isSSL;
|
||
}
|
||
|
||
opts.xdomain = xd;
|
||
opts.xscheme = xs;
|
||
xhr = new XMLHttpRequest(opts);
|
||
|
||
if ('open' in xhr && !opts.forceJSONP) {
|
||
return new XHR(opts);
|
||
} else {
|
||
if (!jsonp) throw new Error('JSONP disabled');
|
||
return new JSONP(opts);
|
||
}
|
||
}
|
||
|
||
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"./polling-jsonp":19,"./polling-xhr":20,"./websocket":22,"xmlhttprequest-ssl":23}],19:[function(require,module,exports){
|
||
(function (global){
|
||
|
||
/**
|
||
* Module requirements.
|
||
*/
|
||
|
||
var Polling = require('./polling');
|
||
var inherit = require('component-inherit');
|
||
|
||
/**
|
||
* Module exports.
|
||
*/
|
||
|
||
module.exports = JSONPPolling;
|
||
|
||
/**
|
||
* Cached regular expressions.
|
||
*/
|
||
|
||
var rNewline = /\n/g;
|
||
var rEscapedNewline = /\\n/g;
|
||
|
||
/**
|
||
* Global JSONP callbacks.
|
||
*/
|
||
|
||
var callbacks;
|
||
|
||
/**
|
||
* Callbacks count.
|
||
*/
|
||
|
||
var index = 0;
|
||
|
||
/**
|
||
* Noop.
|
||
*/
|
||
|
||
function empty () { }
|
||
|
||
/**
|
||
* JSONP Polling constructor.
|
||
*
|
||
* @param {Object} opts.
|
||
* @api public
|
||
*/
|
||
|
||
function JSONPPolling (opts) {
|
||
Polling.call(this, opts);
|
||
|
||
this.query = this.query || {};
|
||
|
||
// define global callbacks array if not present
|
||
// we do this here (lazily) to avoid unneeded global pollution
|
||
if (!callbacks) {
|
||
// we need to consider multiple engines in the same page
|
||
if (!global.___eio) global.___eio = [];
|
||
callbacks = global.___eio;
|
||
}
|
||
|
||
// callback identifier
|
||
this.index = callbacks.length;
|
||
|
||
// add callback to jsonp global
|
||
var self = this;
|
||
callbacks.push(function (msg) {
|
||
self.onData(msg);
|
||
});
|
||
|
||
// append to query string
|
||
this.query.j = this.index;
|
||
|
||
// prevent spurious errors from being emitted when the window is unloaded
|
||
if (global.document && global.addEventListener) {
|
||
global.addEventListener('beforeunload', function () {
|
||
if (self.script) self.script.onerror = empty;
|
||
}, false);
|
||
}
|
||
}
|
||
|
||
/**
|
||
* Inherits from Polling.
|
||
*/
|
||
|
||
inherit(JSONPPolling, Polling);
|
||
|
||
/*
|
||
* JSONP only supports binary as base64 encoded strings
|
||
*/
|
||
|
||
JSONPPolling.prototype.supportsBinary = false;
|
||
|
||
/**
|
||
* Closes the socket.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
JSONPPolling.prototype.doClose = function () {
|
||
if (this.script) {
|
||
this.script.parentNode.removeChild(this.script);
|
||
this.script = null;
|
||
}
|
||
|
||
if (this.form) {
|
||
this.form.parentNode.removeChild(this.form);
|
||
this.form = null;
|
||
this.iframe = null;
|
||
}
|
||
|
||
Polling.prototype.doClose.call(this);
|
||
};
|
||
|
||
/**
|
||
* Starts a poll cycle.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
JSONPPolling.prototype.doPoll = function () {
|
||
var self = this;
|
||
var script = document.createElement('script');
|
||
|
||
if (this.script) {
|
||
this.script.parentNode.removeChild(this.script);
|
||
this.script = null;
|
||
}
|
||
|
||
script.async = true;
|
||
script.src = this.uri();
|
||
script.onerror = function(e){
|
||
self.onError('jsonp poll error',e);
|
||
};
|
||
|
||
var insertAt = document.getElementsByTagName('script')[0];
|
||
if (insertAt) {
|
||
insertAt.parentNode.insertBefore(script, insertAt);
|
||
}
|
||
else {
|
||
(document.head || document.body).appendChild(script);
|
||
}
|
||
this.script = script;
|
||
|
||
var isUAgecko = 'undefined' != typeof navigator && /gecko/i.test(navigator.userAgent);
|
||
|
||
if (isUAgecko) {
|
||
setTimeout(function () {
|
||
var iframe = document.createElement('iframe');
|
||
document.body.appendChild(iframe);
|
||
document.body.removeChild(iframe);
|
||
}, 100);
|
||
}
|
||
};
|
||
|
||
/**
|
||
* Writes with a hidden iframe.
|
||
*
|
||
* @param {String} data to send
|
||
* @param {Function} called upon flush.
|
||
* @api private
|
||
*/
|
||
|
||
JSONPPolling.prototype.doWrite = function (data, fn) {
|
||
var self = this;
|
||
|
||
if (!this.form) {
|
||
var form = document.createElement('form');
|
||
var area = document.createElement('textarea');
|
||
var id = this.iframeId = 'eio_iframe_' + this.index;
|
||
var iframe;
|
||
|
||
form.className = 'socketio';
|
||
form.style.position = 'absolute';
|
||
form.style.top = '-1000px';
|
||
form.style.left = '-1000px';
|
||
form.target = id;
|
||
form.method = 'POST';
|
||
form.setAttribute('accept-charset', 'utf-8');
|
||
area.name = 'd';
|
||
form.appendChild(area);
|
||
document.body.appendChild(form);
|
||
|
||
this.form = form;
|
||
this.area = area;
|
||
}
|
||
|
||
this.form.action = this.uri();
|
||
|
||
function complete () {
|
||
initIframe();
|
||
fn();
|
||
}
|
||
|
||
function initIframe () {
|
||
if (self.iframe) {
|
||
try {
|
||
self.form.removeChild(self.iframe);
|
||
} catch (e) {
|
||
self.onError('jsonp polling iframe removal error', e);
|
||
}
|
||
}
|
||
|
||
try {
|
||
// ie6 dynamic iframes with target="" support (thanks Chris Lambacher)
|
||
var html = '<iframe src="javascript:0" name="'+ self.iframeId +'">';
|
||
iframe = document.createElement(html);
|
||
} catch (e) {
|
||
iframe = document.createElement('iframe');
|
||
iframe.name = self.iframeId;
|
||
iframe.src = 'javascript:0';
|
||
}
|
||
|
||
iframe.id = self.iframeId;
|
||
|
||
self.form.appendChild(iframe);
|
||
self.iframe = iframe;
|
||
}
|
||
|
||
initIframe();
|
||
|
||
// escape \n to prevent it from being converted into \r\n by some UAs
|
||
// double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side
|
||
data = data.replace(rEscapedNewline, '\\\n');
|
||
this.area.value = data.replace(rNewline, '\\n');
|
||
|
||
try {
|
||
this.form.submit();
|
||
} catch(e) {}
|
||
|
||
if (this.iframe.attachEvent) {
|
||
this.iframe.onreadystatechange = function(){
|
||
if (self.iframe.readyState == 'complete') {
|
||
complete();
|
||
}
|
||
};
|
||
} else {
|
||
this.iframe.onload = complete;
|
||
}
|
||
};
|
||
|
||
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"./polling":21,"component-inherit":11}],20:[function(require,module,exports){
|
||
(function (global){
|
||
/**
|
||
* Module requirements.
|
||
*/
|
||
|
||
var XMLHttpRequest = require('xmlhttprequest-ssl');
|
||
var Polling = require('./polling');
|
||
var Emitter = require('component-emitter');
|
||
var inherit = require('component-inherit');
|
||
var debug = require('debug')('engine.io-client:polling-xhr');
|
||
|
||
/**
|
||
* Module exports.
|
||
*/
|
||
|
||
module.exports = XHR;
|
||
module.exports.Request = Request;
|
||
|
||
/**
|
||
* Empty function
|
||
*/
|
||
|
||
function empty(){}
|
||
|
||
/**
|
||
* XHR Polling constructor.
|
||
*
|
||
* @param {Object} opts
|
||
* @api public
|
||
*/
|
||
|
||
function XHR(opts){
|
||
Polling.call(this, opts);
|
||
|
||
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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"./polling":21,"component-emitter":10,"component-inherit":11,"debug":12,"xmlhttprequest-ssl":23}],21:[function(require,module,exports){
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var Transport = require('../transport');
|
||
var parseqs = require('parseqs');
|
||
var parser = require('engine.io-parser');
|
||
var inherit = require('component-inherit');
|
||
var yeast = require('yeast');
|
||
var debug = require('debug')('engine.io-client:polling');
|
||
|
||
/**
|
||
* Module exports.
|
||
*/
|
||
|
||
module.exports = Polling;
|
||
|
||
/**
|
||
* Is XHR2 supported?
|
||
*/
|
||
|
||
var hasXHR2 = (function() {
|
||
var XMLHttpRequest = require('xmlhttprequest-ssl');
|
||
var xhr = new XMLHttpRequest({ xdomain: false });
|
||
return null != xhr.responseType;
|
||
})();
|
||
|
||
/**
|
||
* Polling interface.
|
||
*
|
||
* @param {Object} opts
|
||
* @api private
|
||
*/
|
||
|
||
function Polling(opts){
|
||
var forceBase64 = (opts && opts.forceBase64);
|
||
if (!hasXHR2 || forceBase64) {
|
||
this.supportsBinary = false;
|
||
}
|
||
Transport.call(this, opts);
|
||
}
|
||
|
||
/**
|
||
* Inherits from Transport.
|
||
*/
|
||
|
||
inherit(Polling, Transport);
|
||
|
||
/**
|
||
* Transport name.
|
||
*/
|
||
|
||
Polling.prototype.name = 'polling';
|
||
|
||
/**
|
||
* Opens the socket (triggers polling). We write a PING message to determine
|
||
* when the transport is open.
|
||
*
|
||
* @api private
|
||
*/
|
||
|
||
Polling.prototype.doOpen = function(){
|
||
this.poll();
|
||
};
|
||
|
||
/**
|
||
* Pauses polling.
|
||
*
|
||
* @param {Function} callback upon buffers are flushed and transport is paused
|
||
* @api private
|
||
*/
|
||
|
||
Polling.prototype.pause = function(onPause){
|
||
var 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":17,"component-inherit":11,"debug":12,"engine.io-parser":24,"parseqs":34,"xmlhttprequest-ssl":23,"yeast":49}],22:[function(require,module,exports){
|
||
(function (global){
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var Transport = require('../transport');
|
||
var parser = require('engine.io-parser');
|
||
var parseqs = require('parseqs');
|
||
var inherit = require('component-inherit');
|
||
var yeast = require('yeast');
|
||
var debug = require('debug')('engine.io-client:websocket');
|
||
var BrowserWebSocket = global.WebSocket || global.MozWebSocket;
|
||
|
||
/**
|
||
* 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 = require('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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"../transport":17,"component-inherit":11,"debug":12,"engine.io-parser":24,"parseqs":34,"ws":8,"yeast":49}],23:[function(require,module,exports){
|
||
// browser shim for xmlhttprequest module
|
||
var hasCORS = require('has-cors');
|
||
|
||
module.exports = function(opts) {
|
||
var xdomain = opts.xdomain;
|
||
|
||
// scheme must be same when usign XDomainRequest
|
||
// http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx
|
||
var xscheme = opts.xscheme;
|
||
|
||
// XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.
|
||
// https://github.com/Automattic/engine.io-client/pull/217
|
||
var enablesXDR = opts.enablesXDR;
|
||
|
||
// XMLHttpRequest can be disabled on IE
|
||
try {
|
||
if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) {
|
||
return new XMLHttpRequest();
|
||
}
|
||
} catch (e) { }
|
||
|
||
// Use XDomainRequest for IE8 if enablesXDR is true
|
||
// because loading bar keeps flashing when using jsonp-polling
|
||
// https://github.com/yujiosaka/socke.io-ie8-loading-example
|
||
try {
|
||
if ('undefined' != typeof XDomainRequest && !xscheme && enablesXDR) {
|
||
return new XDomainRequest();
|
||
}
|
||
} catch (e) { }
|
||
|
||
if (!xdomain) {
|
||
try {
|
||
return new ActiveXObject('Microsoft.XMLHTTP');
|
||
} catch(e) { }
|
||
}
|
||
}
|
||
|
||
},{"has-cors":30}],24:[function(require,module,exports){
|
||
(function (global){
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var keys = require('./keys');
|
||
var hasBinary = require('has-binary');
|
||
var sliceBuffer = require('arraybuffer.slice');
|
||
var base64encoder = require('base64-arraybuffer');
|
||
var after = require('after');
|
||
var utf8 = require('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 = require('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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"./keys":25,"after":3,"arraybuffer.slice":4,"base64-arraybuffer":6,"blob":7,"has-binary":26,"utf8":48}],25:[function(require,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;
|
||
};
|
||
|
||
},{}],26:[function(require,module,exports){
|
||
(function (global){
|
||
|
||
/*
|
||
* Module requirements.
|
||
*/
|
||
|
||
var isArray = require('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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"isarray":27}],27:[function(require,module,exports){
|
||
module.exports = Array.isArray || function (arr) {
|
||
return Object.prototype.toString.call(arr) == '[object Array]';
|
||
};
|
||
|
||
},{}],28:[function(require,module,exports){
|
||
(function (global){
|
||
|
||
/*
|
||
* Module requirements.
|
||
*/
|
||
|
||
var isArray = require('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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"isarray":29}],29:[function(require,module,exports){
|
||
arguments[4][27][0].apply(exports,arguments)
|
||
},{"dup":27}],30:[function(require,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;
|
||
}
|
||
|
||
},{}],31:[function(require,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;
|
||
};
|
||
},{}],32:[function(require,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';
|
||
}
|
||
|
||
},{}],33:[function(require,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+$/;
|
||
|
||
module.exports = function parsejson(data) {
|
||
if ('string' != typeof data || !data) {
|
||
return null;
|
||
}
|
||
|
||
data = data.replace(rtrimLeft, '').replace(rtrimRight, '');
|
||
|
||
// Attempt to parse using the native JSON parser first
|
||
if (global.JSON && JSON.parse) {
|
||
return JSON.parse(data);
|
||
}
|
||
|
||
if (rvalidchars.test(data.replace(rvalidescape, '@')
|
||
.replace(rvalidtokens, ']')
|
||
.replace(rvalidbraces, ''))) {
|
||
return (new Function('return ' + data))();
|
||
}
|
||
};
|
||
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{}],34:[function(require,module,exports){
|
||
/**
|
||
* Compiles a querystring
|
||
* Returns string representation of the object
|
||
*
|
||
* @param {Object}
|
||
* @api private
|
||
*/
|
||
|
||
exports.encode = function (obj) {
|
||
var str = '';
|
||
|
||
for (var i in obj) {
|
||
if (obj.hasOwnProperty(i)) {
|
||
if (str.length) str += '&';
|
||
str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);
|
||
}
|
||
}
|
||
|
||
return str;
|
||
};
|
||
|
||
/**
|
||
* Parses a simple querystring into an object
|
||
*
|
||
* @param {String} qs
|
||
* @api private
|
||
*/
|
||
|
||
exports.decode = function(qs){
|
||
var qry = {};
|
||
var pairs = qs.split('&');
|
||
for (var i = 0, l = pairs.length; i < l; i++) {
|
||
var pair = pairs[i].split('=');
|
||
qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);
|
||
}
|
||
return qry;
|
||
};
|
||
|
||
},{}],35:[function(require,module,exports){
|
||
/**
|
||
* Parses an URI
|
||
*
|
||
* @author Steven Levithan <stevenlevithan.com> (MIT license)
|
||
* @api private
|
||
*/
|
||
|
||
var re = /^(?:(?![^:@]+:[^:@\/]*@)(http|https|ws|wss):\/\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\/?#]*)(?::(\d*))?)(((\/(?:[^?#](?![^?#\/]*\.[^?#\/.]+(?:[?#]|$)))*\/?)?([^?#\/]*))(?:\?([^#]*))?(?:#(.*))?)/;
|
||
|
||
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;
|
||
};
|
||
|
||
},{}],36:[function(require,module,exports){
|
||
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var url = require('./url');
|
||
var parser = require('socket.io-parser');
|
||
var Manager = require('./manager');
|
||
var debug = require('debug')('socket.io-client');
|
||
|
||
/**
|
||
* Module exports.
|
||
*/
|
||
|
||
module.exports = exports = lookup;
|
||
|
||
/**
|
||
* Managers cache.
|
||
*/
|
||
|
||
var cache = exports.managers = {};
|
||
|
||
/**
|
||
* Looks up an existing `Manager` for multiplexing.
|
||
* If the user summons:
|
||
*
|
||
* `io('http://localhost/a');`
|
||
* `io('http://localhost/b');`
|
||
*
|
||
* We reuse the existing instance based on same scheme/port/host,
|
||
* and we initialize sockets for each namespace.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
function lookup(uri, opts) {
|
||
if (typeof uri == 'object') {
|
||
opts = uri;
|
||
uri = undefined;
|
||
}
|
||
|
||
opts = opts || {};
|
||
|
||
var parsed = url(uri);
|
||
var source = parsed.source;
|
||
var id = parsed.id;
|
||
var path = parsed.path;
|
||
var sameNamespace = cache[id] && path in cache[id].nsps;
|
||
var newConnection = opts.forceNew || opts['force new connection'] ||
|
||
false === opts.multiplex || sameNamespace;
|
||
|
||
var io;
|
||
|
||
if (newConnection) {
|
||
debug('ignoring socket cache for %s', source);
|
||
io = Manager(source, opts);
|
||
} else {
|
||
if (!cache[id]) {
|
||
debug('new io instance for %s', source);
|
||
cache[id] = Manager(source, opts);
|
||
}
|
||
io = cache[id];
|
||
}
|
||
|
||
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 = require('./manager');
|
||
exports.Socket = require('./socket');
|
||
|
||
},{"./manager":37,"./socket":39,"./url":40,"debug":12,"socket.io-parser":43}],37:[function(require,module,exports){
|
||
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var eio = require('engine.io-client');
|
||
var Socket = require('./socket');
|
||
var Emitter = require('component-emitter');
|
||
var parser = require('socket.io-parser');
|
||
var on = require('./on');
|
||
var bind = require('component-bind');
|
||
var debug = require('debug')('socket.io-client:manager');
|
||
var indexOf = require('indexof');
|
||
var Backoff = require('backo2');
|
||
|
||
/**
|
||
* IE6+ hasOwnProperty
|
||
*/
|
||
|
||
var has = Object.prototype.hasOwnProperty;
|
||
|
||
/**
|
||
* Module exports
|
||
*/
|
||
|
||
module.exports = Manager;
|
||
|
||
/**
|
||
* `Manager` constructor.
|
||
*
|
||
* @param {String} engine instance or engine uri/opts
|
||
* @param {Object} options
|
||
* @api public
|
||
*/
|
||
|
||
function Manager(uri, opts){
|
||
if (!(this instanceof Manager)) return new Manager(uri, opts);
|
||
if (uri && ('object' == typeof uri)) {
|
||
opts = uri;
|
||
uri = undefined;
|
||
}
|
||
opts = opts || {};
|
||
|
||
opts.path = opts.path || '/socket.io';
|
||
this.nsps = {};
|
||
this.subs = [];
|
||
this.opts = opts;
|
||
this.reconnection(opts.reconnection !== false);
|
||
this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);
|
||
this.reconnectionDelay(opts.reconnectionDelay || 1000);
|
||
this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);
|
||
this.randomizationFactor(opts.randomizationFactor || 0.5);
|
||
this.backoff = new Backoff({
|
||
min: this.reconnectionDelay(),
|
||
max: this.reconnectionDelayMax(),
|
||
jitter: this.randomizationFactor()
|
||
});
|
||
this.timeout(null == opts.timeout ? 20000 : opts.timeout);
|
||
this.readyState = 'closed';
|
||
this.uri = uri;
|
||
this.connecting = [];
|
||
this.lastPing = null;
|
||
this.encoding = false;
|
||
this.packetBuffer = [];
|
||
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":38,"./socket":39,"backo2":5,"component-bind":9,"component-emitter":41,"debug":12,"engine.io-client":14,"indexof":31,"socket.io-parser":43}],38:[function(require,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);
|
||
}
|
||
};
|
||
}
|
||
|
||
},{}],39:[function(require,module,exports){
|
||
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var parser = require('socket.io-parser');
|
||
var Emitter = require('component-emitter');
|
||
var toArray = require('to-array');
|
||
var on = require('./on');
|
||
var bind = require('component-bind');
|
||
var debug = require('debug')('socket.io-client:socket');
|
||
var hasBin = require('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":38,"component-bind":9,"component-emitter":41,"debug":12,"has-binary":28,"socket.io-parser":43,"to-array":47}],40:[function(require,module,exports){
|
||
(function (global){
|
||
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var parseuri = require('parseuri');
|
||
var debug = require('debug')('socket.io-client:url');
|
||
|
||
/**
|
||
* Module exports.
|
||
*/
|
||
|
||
module.exports = url;
|
||
|
||
/**
|
||
* URL parser.
|
||
*
|
||
* @param {String} url
|
||
* @param {Object} An object meant to mimic window.location.
|
||
* Defaults to window.location.
|
||
* @api public
|
||
*/
|
||
|
||
function url(uri, loc){
|
||
var obj = uri;
|
||
|
||
// default to window.location
|
||
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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"debug":12,"parseuri":35}],41:[function(require,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;
|
||
};
|
||
|
||
},{}],42:[function(require,module,exports){
|
||
(function (global){
|
||
/*global Blob,File*/
|
||
|
||
/**
|
||
* Module requirements
|
||
*/
|
||
|
||
var isArray = require('isarray');
|
||
var isBuf = require('./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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{"./is-buffer":44,"isarray":45}],43:[function(require,module,exports){
|
||
|
||
/**
|
||
* Module dependencies.
|
||
*/
|
||
|
||
var debug = require('debug')('socket.io-parser');
|
||
var json = require('json3');
|
||
var isArray = require('isarray');
|
||
var Emitter = require('component-emitter');
|
||
var binary = require('./binary');
|
||
var isBuf = require('./is-buffer');
|
||
|
||
/**
|
||
* Protocol version.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.protocol = 4;
|
||
|
||
/**
|
||
* Packet types.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.types = [
|
||
'CONNECT',
|
||
'DISCONNECT',
|
||
'EVENT',
|
||
'ACK',
|
||
'ERROR',
|
||
'BINARY_EVENT',
|
||
'BINARY_ACK'
|
||
];
|
||
|
||
/**
|
||
* Packet type `connect`.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.CONNECT = 0;
|
||
|
||
/**
|
||
* Packet type `disconnect`.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.DISCONNECT = 1;
|
||
|
||
/**
|
||
* Packet type `event`.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.EVENT = 2;
|
||
|
||
/**
|
||
* Packet type `ack`.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.ACK = 3;
|
||
|
||
/**
|
||
* Packet type `error`.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.ERROR = 4;
|
||
|
||
/**
|
||
* Packet type 'binary event'
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.BINARY_EVENT = 5;
|
||
|
||
/**
|
||
* Packet type `binary ack`. For acks with binary arguments.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.BINARY_ACK = 6;
|
||
|
||
/**
|
||
* Encoder constructor.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.Encoder = Encoder;
|
||
|
||
/**
|
||
* Decoder constructor.
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
exports.Decoder = Decoder;
|
||
|
||
/**
|
||
* A socket.io Encoder instance
|
||
*
|
||
* @api public
|
||
*/
|
||
|
||
function Encoder() {}
|
||
|
||
/**
|
||
* 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":42,"./is-buffer":44,"component-emitter":10,"debug":12,"isarray":45,"json3":46}],44:[function(require,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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{}],45:[function(require,module,exports){
|
||
arguments[4][27][0].apply(exports,arguments)
|
||
},{"dup":27}],46:[function(require,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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{}],47:[function(require,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
|
||
}
|
||
|
||
},{}],48:[function(require,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 global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {})
|
||
|
||
},{}],49:[function(require,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;
|
||
|
||
},{}]},{},[1])
|
||
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e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require==\"function\"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error(\"Cannot find module '\"+o+\"'\");throw f.code=\"MODULE_NOT_FOUND\",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require==\"function\"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s})","const socket = require('./socket')\n\nsocket.on('client.display', (data) => {\n  let exists = document.getElementById(data.key)\n\n  if (exists) {\n    exists.tag.remove()\n    exists.remove()\n  }\n\n  let element = document.createElement('div')\n  element.innerHTML = data.html\n  element.id = data.key\n  element.classList.add('root-element')\n\n  let styleElement = document.createElement('style')\n  styleElement.setAttribute('type', 'text/css')\n  styleElement.innerHTML = data.css\n\n  element.tag = styleElement\n\n  document.body.appendChild(element)\n  document.head.appendChild(styleElement)\n\n  window.setTimeout(() => {\n    element.classList.add('root-element-display')\n  }, 50)\n})\n\nsocket.on('client.hide', (data) => {\n  let exists = document.getElementById(data.key)\n\n  if (exists) {\n    exists.classList.remove('root-element-display')\n\n    window.setTimeout(() => {\n      exists.tag.remove()\n      exists.remove()\n    }, 1500)\n  }\n})\n","const io = require('socket.io-client')\n\nconst socket = io()\n\nmodule.exports = socket\n","module.exports = after\n\nfunction after(count, callback, err_cb) {\n    var bail = false\n    err_cb = err_cb || noop\n    proxy.count = count\n\n    return (count === 0) ? callback() : proxy\n\n    function proxy(err, result) {\n        if (proxy.count <= 0) {\n            throw new Error('after called too many times')\n        }\n        --proxy.count\n\n        // after first error, rest are passed to err_cb\n        if (err) {\n            bail = true\n            callback(err)\n            // future error callbacks will go to error handler\n            callback = err_cb\n        } else if (proxy.count === 0 && !bail) {\n            callback(null, result)\n        }\n    }\n}\n\nfunction noop() {}\n","/**\n * An abstraction for slicing an arraybuffer even when\n * ArrayBuffer.prototype.slice is not supported\n *\n * @api public\n */\n\nmodule.exports = function(arraybuffer, start, end) {\n  var bytes = arraybuffer.byteLength;\n  start = start || 0;\n  end = end || bytes;\n\n  if (arraybuffer.slice) { return arraybuffer.slice(start, end); }\n\n  if (start < 0) { start += bytes; }\n  if (end < 0) { end += bytes; }\n  if (end > bytes) { end = bytes; }\n\n  if (start >= bytes || start >= end || bytes === 0) {\n    return new ArrayBuffer(0);\n  }\n\n  var abv = new Uint8Array(arraybuffer);\n  var result = new Uint8Array(end - start);\n  for (var i = start, ii = 0; i < end; i++, ii++) {\n    result[ii] = abv[i];\n  }\n  return result.buffer;\n};\n","\n/**\n * Expose `Backoff`.\n */\n\nmodule.exports = Backoff;\n\n/**\n * Initialize backoff timer with `opts`.\n *\n * - `min` initial timeout in milliseconds [100]\n * - `max` max timeout [10000]\n * - `jitter` [0]\n * - `factor` [2]\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction Backoff(opts) {\n  opts = opts || {};\n  this.ms = opts.min || 100;\n  this.max = opts.max || 10000;\n  this.factor = opts.factor || 2;\n  this.jitter = opts.jitter > 0 && opts.jitter <= 1 ? opts.jitter : 0;\n  this.attempts = 0;\n}\n\n/**\n * Return the backoff duration.\n *\n * @return {Number}\n * @api public\n */\n\nBackoff.prototype.duration = function(){\n  var ms = this.ms * Math.pow(this.factor, this.attempts++);\n  if (this.jitter) {\n    var rand =  Math.random();\n    var deviation = Math.floor(rand * this.jitter * ms);\n    ms = (Math.floor(rand * 10) & 1) == 0  ? ms - deviation : ms + deviation;\n  }\n  return Math.min(ms, this.max) | 0;\n};\n\n/**\n * Reset the number of attempts.\n *\n * @api public\n */\n\nBackoff.prototype.reset = function(){\n  this.attempts = 0;\n};\n\n/**\n * Set the minimum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMin = function(min){\n  this.ms = min;\n};\n\n/**\n * Set the maximum duration\n *\n * @api public\n */\n\nBackoff.prototype.setMax = function(max){\n  this.max = max;\n};\n\n/**\n * Set the jitter\n *\n * @api public\n */\n\nBackoff.prototype.setJitter = function(jitter){\n  this.jitter = jitter;\n};\n\n","/*\n * base64-arraybuffer\n * https://github.com/niklasvh/base64-arraybuffer\n *\n * Copyright (c) 2012 Niklas von Hertzen\n * Licensed under the MIT license.\n */\n(function(chars){\n  \"use strict\";\n\n  exports.encode = function(arraybuffer) {\n    var bytes = new Uint8Array(arraybuffer),\n    i, len = bytes.length, base64 = \"\";\n\n    for (i = 0; i < len; i+=3) {\n      base64 += chars[bytes[i] >> 2];\n      base64 += chars[((bytes[i] & 3) << 4) | (bytes[i + 1] >> 4)];\n      base64 += chars[((bytes[i + 1] & 15) << 2) | (bytes[i + 2] >> 6)];\n      base64 += chars[bytes[i + 2] & 63];\n    }\n\n    if ((len % 3) === 2) {\n      base64 = base64.substring(0, base64.length - 1) + \"=\";\n    } else if (len % 3 === 1) {\n      base64 = base64.substring(0, base64.length - 2) + \"==\";\n    }\n\n    return base64;\n  };\n\n  exports.decode =  function(base64) {\n    var bufferLength = base64.length * 0.75,\n    len = base64.length, i, p = 0,\n    encoded1, encoded2, encoded3, encoded4;\n\n    if (base64[base64.length - 1] === \"=\") {\n      bufferLength--;\n      if (base64[base64.length - 2] === \"=\") {\n        bufferLength--;\n      }\n    }\n\n    var arraybuffer = new ArrayBuffer(bufferLength),\n    bytes = new Uint8Array(arraybuffer);\n\n    for (i = 0; i < len; i+=4) {\n      encoded1 = chars.indexOf(base64[i]);\n      encoded2 = chars.indexOf(base64[i+1]);\n      encoded3 = chars.indexOf(base64[i+2]);\n      encoded4 = chars.indexOf(base64[i+3]);\n\n      bytes[p++] = (encoded1 << 2) | (encoded2 >> 4);\n      bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2);\n      bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63);\n    }\n\n    return arraybuffer;\n  };\n})(\"ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/\");\n","/**\n * Create a blob builder even when vendor prefixes exist\n */\n\nvar BlobBuilder = global.BlobBuilder\n  || global.WebKitBlobBuilder\n  || global.MSBlobBuilder\n  || global.MozBlobBuilder;\n\n/**\n * Check if Blob constructor is supported\n */\n\nvar blobSupported = (function() {\n  try {\n    var a = new Blob(['hi']);\n    return a.size === 2;\n  } catch(e) {\n    return false;\n  }\n})();\n\n/**\n * Check if Blob constructor supports ArrayBufferViews\n * Fails in Safari 6, so we need to map to ArrayBuffers there.\n */\n\nvar blobSupportsArrayBufferView = blobSupported && (function() {\n  try {\n    var b = new Blob([new Uint8Array([1,2])]);\n    return b.size === 2;\n  } catch(e) {\n    return false;\n  }\n})();\n\n/**\n * Check if BlobBuilder is supported\n */\n\nvar blobBuilderSupported = BlobBuilder\n  && BlobBuilder.prototype.append\n  && BlobBuilder.prototype.getBlob;\n\n/**\n * Helper function that maps ArrayBufferViews to ArrayBuffers\n * Used by BlobBuilder constructor and old browsers that didn't\n * support it in the Blob constructor.\n */\n\nfunction mapArrayBufferViews(ary) {\n  for (var i = 0; i < ary.length; i++) {\n    var chunk = ary[i];\n    if (chunk.buffer instanceof ArrayBuffer) {\n      var buf = chunk.buffer;\n\n      // if this is a subarray, make a copy so we only\n      // include the subarray region from the underlying buffer\n      if (chunk.byteLength !== buf.byteLength) {\n        var copy = new Uint8Array(chunk.byteLength);\n        copy.set(new Uint8Array(buf, chunk.byteOffset, chunk.byteLength));\n        buf = copy.buffer;\n      }\n\n      ary[i] = buf;\n    }\n  }\n}\n\nfunction BlobBuilderConstructor(ary, options) {\n  options = options || {};\n\n  var bb = new BlobBuilder();\n  mapArrayBufferViews(ary);\n\n  for (var i = 0; i < ary.length; i++) {\n    bb.append(ary[i]);\n  }\n\n  return (options.type) ? bb.getBlob(options.type) : bb.getBlob();\n};\n\nfunction BlobConstructor(ary, options) {\n  mapArrayBufferViews(ary);\n  return new Blob(ary, options || {});\n};\n\nmodule.exports = (function() {\n  if (blobSupported) {\n    return blobSupportsArrayBufferView ? global.Blob : BlobConstructor;\n  } else if (blobBuilderSupported) {\n    return BlobBuilderConstructor;\n  } else {\n    return undefined;\n  }\n})();\n","","/**\n * Slice reference.\n */\n\nvar slice = [].slice;\n\n/**\n * Bind `obj` to `fn`.\n *\n * @param {Object} obj\n * @param {Function|String} fn or string\n * @return {Function}\n * @api public\n */\n\nmodule.exports = function(obj, fn){\n  if ('string' == typeof fn) fn = obj[fn];\n  if ('function' != typeof fn) throw new Error('bind() requires a function');\n  var args = slice.call(arguments, 2);\n  return function(){\n    return fn.apply(obj, args.concat(slice.call(arguments)));\n  }\n};\n","\n/**\n * Expose `Emitter`.\n */\n\nmodule.exports = Emitter;\n\n/**\n * Initialize a new `Emitter`.\n *\n * @api public\n */\n\nfunction Emitter(obj) {\n  if (obj) return mixin(obj);\n};\n\n/**\n * Mixin the emitter properties.\n *\n * @param {Object} obj\n * @return {Object}\n * @api private\n */\n\nfunction mixin(obj) {\n  for (var key in Emitter.prototype) {\n    obj[key] = Emitter.prototype[key];\n  }\n  return obj;\n}\n\n/**\n * Listen on the given `event` with `fn`.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.on =\nEmitter.prototype.addEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n  (this._callbacks[event] = this._callbacks[event] || [])\n    .push(fn);\n  return this;\n};\n\n/**\n * Adds an `event` listener that will be invoked a single\n * time then automatically removed.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.once = function(event, fn){\n  var self = this;\n  this._callbacks = this._callbacks || {};\n\n  function on() {\n    self.off(event, on);\n    fn.apply(this, arguments);\n  }\n\n  on.fn = fn;\n  this.on(event, on);\n  return this;\n};\n\n/**\n * Remove the given callback for `event` or all\n * registered callbacks.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.off =\nEmitter.prototype.removeListener =\nEmitter.prototype.removeAllListeners =\nEmitter.prototype.removeEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n\n  // all\n  if (0 == arguments.length) {\n    this._callbacks = {};\n    return this;\n  }\n\n  // specific event\n  var callbacks = this._callbacks[event];\n  if (!callbacks) return this;\n\n  // remove all handlers\n  if (1 == arguments.length) {\n    delete this._callbacks[event];\n    return this;\n  }\n\n  // remove specific handler\n  var cb;\n  for (var i = 0; i < callbacks.length; i++) {\n    cb = callbacks[i];\n    if (cb === fn || cb.fn === fn) {\n      callbacks.splice(i, 1);\n      break;\n    }\n  }\n  return this;\n};\n\n/**\n * Emit `event` with the given args.\n *\n * @param {String} event\n * @param {Mixed} ...\n * @return {Emitter}\n */\n\nEmitter.prototype.emit = function(event){\n  this._callbacks = this._callbacks || {};\n  var args = [].slice.call(arguments, 1)\n    , callbacks = this._callbacks[event];\n\n  if (callbacks) {\n    callbacks = callbacks.slice(0);\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\n      callbacks[i].apply(this, args);\n    }\n  }\n\n  return this;\n};\n\n/**\n * Return array of callbacks for `event`.\n *\n * @param {String} event\n * @return {Array}\n * @api public\n */\n\nEmitter.prototype.listeners = function(event){\n  this._callbacks = this._callbacks || {};\n  return this._callbacks[event] || [];\n};\n\n/**\n * Check if this emitter has `event` handlers.\n *\n * @param {String} event\n * @return {Boolean}\n * @api public\n */\n\nEmitter.prototype.hasListeners = function(event){\n  return !! this.listeners(event).length;\n};\n","\nmodule.exports = function(a, b){\n  var fn = function(){};\n  fn.prototype = b.prototype;\n  a.prototype = new fn;\n  a.prototype.constructor = a;\n};","\n/**\n * This is the web browser implementation of `debug()`.\n *\n * Expose `debug()` as the module.\n */\n\nexports = module.exports = require('./debug');\nexports.log = log;\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = 'undefined' != typeof chrome\n               && 'undefined' != typeof chrome.storage\n                  ? chrome.storage.local\n                  : localstorage();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n  'lightseagreen',\n  'forestgreen',\n  'goldenrod',\n  'dodgerblue',\n  'darkorchid',\n  'crimson'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\nfunction useColors() {\n  // is webkit? http://stackoverflow.com/a/16459606/376773\n  return ('WebkitAppearance' in document.documentElement.style) ||\n    // is firebug? http://stackoverflow.com/a/398120/376773\n    (window.console && (console.firebug || (console.exception && console.table))) ||\n    // is firefox >= v31?\n    // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n    (navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31);\n}\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nexports.formatters.j = function(v) {\n  return JSON.stringify(v);\n};\n\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs() {\n  var args = arguments;\n  var useColors = this.useColors;\n\n  args[0] = (useColors ? '%c' : '')\n    + this.namespace\n    + (useColors ? ' %c' : ' ')\n    + args[0]\n    + (useColors ? '%c ' : ' ')\n    + '+' + exports.humanize(this.diff);\n\n  if (!useColors) return args;\n\n  var c = 'color: ' + this.color;\n  args = [args[0], c, 'color: inherit'].concat(Array.prototype.slice.call(args, 1));\n\n  // the final \"%c\" is somewhat tricky, because there could be other\n  // arguments passed either before or after the %c, so we need to\n  // figure out the correct index to insert the CSS into\n  var index = 0;\n  var lastC = 0;\n  args[0].replace(/%[a-z%]/g, function(match) {\n    if ('%%' === match) return;\n    index++;\n    if ('%c' === match) {\n      // we only are interested in the *last* %c\n      // (the user may have provided their own)\n      lastC = index;\n    }\n  });\n\n  args.splice(lastC, 0, c);\n  return args;\n}\n\n/**\n * Invokes `console.log()` when available.\n * No-op when `console.log` is not a \"function\".\n *\n * @api public\n */\n\nfunction log() {\n  // this hackery is required for IE8/9, where\n  // the `console.log` function doesn't have 'apply'\n  return 'object' === typeof console\n    && console.log\n    && Function.prototype.apply.call(console.log, console, arguments);\n}\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\n\nfunction save(namespaces) {\n  try {\n    if (null == namespaces) {\n      exports.storage.removeItem('debug');\n    } else {\n      exports.storage.debug = namespaces;\n    }\n  } catch(e) {}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\n\nfunction load() {\n  var r;\n  try {\n    r = exports.storage.debug;\n  } catch(e) {}\n  return r;\n}\n\n/**\n * Enable namespaces listed in `localStorage.debug` initially.\n */\n\nexports.enable(load());\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage(){\n  try {\n    return window.localStorage;\n  } catch (e) {}\n}\n","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n *\n * Expose `debug()` as the module.\n */\n\nexports = module.exports = debug;\nexports.coerce = coerce;\nexports.disable = disable;\nexports.enable = enable;\nexports.enabled = enabled;\nexports.humanize = require('ms');\n\n/**\n * The currently active debug mode names, and names to skip.\n */\n\nexports.names = [];\nexports.skips = [];\n\n/**\n * Map of special \"%n\" handling functions, for the debug \"format\" argument.\n *\n * Valid key names are a single, lowercased letter, i.e. \"n\".\n */\n\nexports.formatters = {};\n\n/**\n * Previously assigned color.\n */\n\nvar prevColor = 0;\n\n/**\n * Previous log timestamp.\n */\n\nvar prevTime;\n\n/**\n * Select a color.\n *\n * @return {Number}\n * @api private\n */\n\nfunction selectColor() {\n  return exports.colors[prevColor++ % exports.colors.length];\n}\n\n/**\n * Create a debugger with the given `namespace`.\n *\n * @param {String} namespace\n * @return {Function}\n * @api public\n */\n\nfunction debug(namespace) {\n\n  // define the `disabled` version\n  function disabled() {\n  }\n  disabled.enabled = false;\n\n  // define the `enabled` version\n  function enabled() {\n\n    var self = enabled;\n\n    // set `diff` timestamp\n    var curr = +new Date();\n    var ms = curr - (prevTime || curr);\n    self.diff = ms;\n    self.prev = prevTime;\n    self.curr = curr;\n    prevTime = curr;\n\n    // add the `color` if not set\n    if (null == self.useColors) self.useColors = exports.useColors();\n    if (null == self.color && self.useColors) self.color = selectColor();\n\n    var args = Array.prototype.slice.call(arguments);\n\n    args[0] = exports.coerce(args[0]);\n\n    if ('string' !== typeof args[0]) {\n      // anything else let's inspect with %o\n      args = ['%o'].concat(args);\n    }\n\n    // apply any `formatters` transformations\n    var index = 0;\n    args[0] = args[0].replace(/%([a-z%])/g, function(match, format) {\n      // if we encounter an escaped % then don't increase the array index\n      if (match === '%%') return match;\n      index++;\n      var formatter = exports.formatters[format];\n      if ('function' === typeof formatter) {\n        var val = args[index];\n        match = formatter.call(self, val);\n\n        // now we need to remove `args[index]` since it's inlined in the `format`\n        args.splice(index, 1);\n        index--;\n      }\n      return match;\n    });\n\n    if ('function' === typeof exports.formatArgs) {\n      args = exports.formatArgs.apply(self, args);\n    }\n    var logFn = enabled.log || exports.log || console.log.bind(console);\n    logFn.apply(self, args);\n  }\n  enabled.enabled = true;\n\n  var fn = exports.enabled(namespace) ? enabled : disabled;\n\n  fn.namespace = namespace;\n\n  return fn;\n}\n\n/**\n * Enables a debug mode by namespaces. This can include modes\n * separated by a colon and wildcards.\n *\n * @param {String} namespaces\n * @api public\n */\n\nfunction enable(namespaces) {\n  exports.save(namespaces);\n\n  var split = (namespaces || '').split(/[\\s,]+/);\n  var len = split.length;\n\n  for (var i = 0; i < len; i++) {\n    if (!split[i]) continue; // ignore empty strings\n    namespaces = split[i].replace(/\\*/g, '.*?');\n    if (namespaces[0] === '-') {\n      exports.skips.push(new RegExp('^' + namespaces.substr(1) + '$'));\n    } else {\n      exports.names.push(new RegExp('^' + namespaces + '$'));\n    }\n  }\n}\n\n/**\n * Disable debug output.\n *\n * @api public\n */\n\nfunction disable() {\n  exports.enable('');\n}\n\n/**\n * Returns true if the given mode name is enabled, false otherwise.\n *\n * @param {String} name\n * @return {Boolean}\n * @api public\n */\n\nfunction enabled(name) {\n  var i, len;\n  for (i = 0, len = exports.skips.length; i < len; i++) {\n    if (exports.skips[i].test(name)) {\n      return false;\n    }\n  }\n  for (i = 0, len = exports.names.length; i < len; i++) {\n    if (exports.names[i].test(name)) {\n      return true;\n    }\n  }\n  return false;\n}\n\n/**\n * Coerce `val`.\n *\n * @param {Mixed} val\n * @return {Mixed}\n * @api private\n */\n\nfunction coerce(val) {\n  if (val instanceof Error) return val.stack || val.message;\n  return val;\n}\n","\nmodule.exports =  require('./lib/');\n","\nmodule.exports = require('./socket');\n\n/**\n * Exports parser\n *\n * @api public\n *\n */\nmodule.exports.parser = require('engine.io-parser');\n","/**\n * Module dependencies.\n */\n\nvar transports = require('./transports');\nvar Emitter = require('component-emitter');\nvar debug = require('debug')('engine.io-client:socket');\nvar index = require('indexof');\nvar parser = require('engine.io-parser');\nvar parseuri = require('parseuri');\nvar parsejson = require('parsejson');\nvar parseqs = require('parseqs');\n\n/**\n * Module exports.\n */\n\nmodule.exports = Socket;\n\n/**\n * Noop function.\n *\n * @api private\n */\n\nfunction noop(){}\n\n/**\n * Socket constructor.\n *\n * @param {String|Object} uri or options\n * @param {Object} options\n * @api public\n */\n\nfunction Socket(uri, opts){\n  if (!(this instanceof Socket)) return new Socket(uri, opts);\n\n  opts = opts || {};\n\n  if (uri && 'object' == typeof uri) {\n    opts = uri;\n    uri = null;\n  }\n\n  if (uri) {\n    uri = parseuri(uri);\n    opts.hostname = uri.host;\n    opts.secure = uri.protocol == 'https' || uri.protocol == 'wss';\n    opts.port = uri.port;\n    if (uri.query) opts.query = uri.query;\n  } else if (opts.host) {\n    opts.hostname = parseuri(opts.host).host;\n  }\n\n  this.secure = null != opts.secure ? opts.secure :\n    (global.location && 'https:' == location.protocol);\n\n  if (opts.hostname && !opts.port) {\n    // if no port is specified manually, use the protocol default\n    opts.port = this.secure ? '443' : '80';\n  }\n\n  this.agent = opts.agent || false;\n  this.hostname = opts.hostname ||\n    (global.location ? location.hostname : 'localhost');\n  this.port = opts.port || (global.location && location.port ?\n       location.port :\n       (this.secure ? 443 : 80));\n  this.query = opts.query || {};\n  if ('string' == typeof this.query) this.query = parseqs.decode(this.query);\n  this.upgrade = false !== opts.upgrade;\n  this.path = (opts.path || '/engine.io').replace(/\\/$/, '') + '/';\n  this.forceJSONP = !!opts.forceJSONP;\n  this.jsonp = false !== opts.jsonp;\n  this.forceBase64 = !!opts.forceBase64;\n  this.enablesXDR = !!opts.enablesXDR;\n  this.timestampParam = opts.timestampParam || 't';\n  this.timestampRequests = opts.timestampRequests;\n  this.transports = opts.transports || ['polling', 'websocket'];\n  this.readyState = '';\n  this.writeBuffer = [];\n  this.policyPort = opts.policyPort || 843;\n  this.rememberUpgrade = opts.rememberUpgrade || false;\n  this.binaryType = null;\n  this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades;\n  this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false;\n\n  if (true === this.perMessageDeflate) this.perMessageDeflate = {};\n  if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) {\n    this.perMessageDeflate.threshold = 1024;\n  }\n\n  // SSL options for Node.js client\n  this.pfx = opts.pfx || null;\n  this.key = opts.key || null;\n  this.passphrase = opts.passphrase || null;\n  this.cert = opts.cert || null;\n  this.ca = opts.ca || null;\n  this.ciphers = opts.ciphers || null;\n  this.rejectUnauthorized = opts.rejectUnauthorized === undefined ? null : opts.rejectUnauthorized;\n\n  // other options for Node.js client\n  var freeGlobal = typeof global == 'object' && global;\n  if (freeGlobal.global === freeGlobal) {\n    if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) {\n      this.extraHeaders = opts.extraHeaders;\n    }\n  }\n\n  this.open();\n}\n\nSocket.priorWebsocketSuccess = false;\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Socket.prototype);\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nSocket.protocol = parser.protocol; // this is an int\n\n/**\n * Expose deps for legacy compatibility\n * and standalone browser access.\n */\n\nSocket.Socket = Socket;\nSocket.Transport = require('./transport');\nSocket.transports = require('./transports');\nSocket.parser = require('engine.io-parser');\n\n/**\n * Creates transport of the given type.\n *\n * @param {String} transport name\n * @return {Transport}\n * @api private\n */\n\nSocket.prototype.createTransport = function (name) {\n  debug('creating transport \"%s\"', name);\n  var query = clone(this.query);\n\n  // append engine.io protocol identifier\n  query.EIO = parser.protocol;\n\n  // transport name\n  query.transport = name;\n\n  // session id if we already have one\n  if (this.id) query.sid = this.id;\n\n  var transport = new transports[name]({\n    agent: this.agent,\n    hostname: this.hostname,\n    port: this.port,\n    secure: this.secure,\n    path: this.path,\n    query: query,\n    forceJSONP: this.forceJSONP,\n    jsonp: this.jsonp,\n    forceBase64: this.forceBase64,\n    enablesXDR: this.enablesXDR,\n    timestampRequests: this.timestampRequests,\n    timestampParam: this.timestampParam,\n    policyPort: this.policyPort,\n    socket: this,\n    pfx: this.pfx,\n    key: this.key,\n    passphrase: this.passphrase,\n    cert: this.cert,\n    ca: this.ca,\n    ciphers: this.ciphers,\n    rejectUnauthorized: this.rejectUnauthorized,\n    perMessageDeflate: this.perMessageDeflate,\n    extraHeaders: this.extraHeaders\n  });\n\n  return transport;\n};\n\nfunction clone (obj) {\n  var o = {};\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      o[i] = obj[i];\n    }\n  }\n  return o;\n}\n\n/**\n * Initializes transport to use and starts probe.\n *\n * @api private\n */\nSocket.prototype.open = function () {\n  var transport;\n  if (this.rememberUpgrade && Socket.priorWebsocketSuccess && this.transports.indexOf('websocket') != -1) {\n    transport = 'websocket';\n  } else if (0 === this.transports.length) {\n    // Emit error on next tick so it can be listened to\n    var self = this;\n    setTimeout(function() {\n      self.emit('error', 'No transports available');\n    }, 0);\n    return;\n  } else {\n    transport = this.transports[0];\n  }\n  this.readyState = 'opening';\n\n  // Retry with the next transport if the transport is disabled (jsonp: false)\n  try {\n    transport = this.createTransport(transport);\n  } catch (e) {\n    this.transports.shift();\n    this.open();\n    return;\n  }\n\n  transport.open();\n  this.setTransport(transport);\n};\n\n/**\n * Sets the current transport. Disables the existing one (if any).\n *\n * @api private\n */\n\nSocket.prototype.setTransport = function(transport){\n  debug('setting transport %s', transport.name);\n  var self = this;\n\n  if (this.transport) {\n    debug('clearing existing transport %s', this.transport.name);\n    this.transport.removeAllListeners();\n  }\n\n  // set up transport\n  this.transport = transport;\n\n  // set up transport listeners\n  transport\n  .on('drain', function(){\n    self.onDrain();\n  })\n  .on('packet', function(packet){\n    self.onPacket(packet);\n  })\n  .on('error', function(e){\n    self.onError(e);\n  })\n  .on('close', function(){\n    self.onClose('transport close');\n  });\n};\n\n/**\n * Probes a transport.\n *\n * @param {String} transport name\n * @api private\n */\n\nSocket.prototype.probe = function (name) {\n  debug('probing transport \"%s\"', name);\n  var transport = this.createTransport(name, { probe: 1 })\n    , failed = false\n    , self = this;\n\n  Socket.priorWebsocketSuccess = false;\n\n  function onTransportOpen(){\n    if (self.onlyBinaryUpgrades) {\n      var upgradeLosesBinary = !this.supportsBinary && self.transport.supportsBinary;\n      failed = failed || upgradeLosesBinary;\n    }\n    if (failed) return;\n\n    debug('probe transport \"%s\" opened', name);\n    transport.send([{ type: 'ping', data: 'probe' }]);\n    transport.once('packet', function (msg) {\n      if (failed) return;\n      if ('pong' == msg.type && 'probe' == msg.data) {\n        debug('probe transport \"%s\" pong', name);\n        self.upgrading = true;\n        self.emit('upgrading', transport);\n        if (!transport) return;\n        Socket.priorWebsocketSuccess = 'websocket' == transport.name;\n\n        debug('pausing current transport \"%s\"', self.transport.name);\n        self.transport.pause(function () {\n          if (failed) return;\n          if ('closed' == self.readyState) return;\n          debug('changing transport and sending upgrade packet');\n\n          cleanup();\n\n          self.setTransport(transport);\n          transport.send([{ type: 'upgrade' }]);\n          self.emit('upgrade', transport);\n          transport = null;\n          self.upgrading = false;\n          self.flush();\n        });\n      } else {\n        debug('probe transport \"%s\" failed', name);\n        var err = new Error('probe error');\n        err.transport = transport.name;\n        self.emit('upgradeError', err);\n      }\n    });\n  }\n\n  function freezeTransport() {\n    if (failed) return;\n\n    // Any callback called by transport should be ignored since now\n    failed = true;\n\n    cleanup();\n\n    transport.close();\n    transport = null;\n  }\n\n  //Handle any error that happens while probing\n  function onerror(err) {\n    var error = new Error('probe error: ' + err);\n    error.transport = transport.name;\n\n    freezeTransport();\n\n    debug('probe transport \"%s\" failed because of error: %s', name, err);\n\n    self.emit('upgradeError', error);\n  }\n\n  function onTransportClose(){\n    onerror(\"transport closed\");\n  }\n\n  //When the socket is closed while we're probing\n  function onclose(){\n    onerror(\"socket closed\");\n  }\n\n  //When the socket is upgraded while we're probing\n  function onupgrade(to){\n    if (transport && to.name != transport.name) {\n      debug('\"%s\" works - aborting \"%s\"', to.name, transport.name);\n      freezeTransport();\n    }\n  }\n\n  //Remove all listeners on the transport and on self\n  function cleanup(){\n    transport.removeListener('open', onTransportOpen);\n    transport.removeListener('error', onerror);\n    transport.removeListener('close', onTransportClose);\n    self.removeListener('close', onclose);\n    self.removeListener('upgrading', onupgrade);\n  }\n\n  transport.once('open', onTransportOpen);\n  transport.once('error', onerror);\n  transport.once('close', onTransportClose);\n\n  this.once('close', onclose);\n  this.once('upgrading', onupgrade);\n\n  transport.open();\n\n};\n\n/**\n * Called when connection is deemed open.\n *\n * @api public\n */\n\nSocket.prototype.onOpen = function () {\n  debug('socket open');\n  this.readyState = 'open';\n  Socket.priorWebsocketSuccess = 'websocket' == this.transport.name;\n  this.emit('open');\n  this.flush();\n\n  // we check for `readyState` in case an `open`\n  // listener already closed the socket\n  if ('open' == this.readyState && this.upgrade && this.transport.pause) {\n    debug('starting upgrade probes');\n    for (var i = 0, l = this.upgrades.length; i < l; i++) {\n      this.probe(this.upgrades[i]);\n    }\n  }\n};\n\n/**\n * Handles a packet.\n *\n * @api private\n */\n\nSocket.prototype.onPacket = function (packet) {\n  if ('opening' == this.readyState || 'open' == this.readyState) {\n    debug('socket receive: type \"%s\", data \"%s\"', packet.type, packet.data);\n\n    this.emit('packet', packet);\n\n    // Socket is live - any packet counts\n    this.emit('heartbeat');\n\n    switch (packet.type) {\n      case 'open':\n        this.onHandshake(parsejson(packet.data));\n        break;\n\n      case 'pong':\n        this.setPing();\n        this.emit('pong');\n        break;\n\n      case 'error':\n        var err = new Error('server error');\n        err.code = packet.data;\n        this.onError(err);\n        break;\n\n      case 'message':\n        this.emit('data', packet.data);\n        this.emit('message', packet.data);\n        break;\n    }\n  } else {\n    debug('packet received with socket readyState \"%s\"', this.readyState);\n  }\n};\n\n/**\n * Called upon handshake completion.\n *\n * @param {Object} handshake obj\n * @api private\n */\n\nSocket.prototype.onHandshake = function (data) {\n  this.emit('handshake', data);\n  this.id = data.sid;\n  this.transport.query.sid = data.sid;\n  this.upgrades = this.filterUpgrades(data.upgrades);\n  this.pingInterval = data.pingInterval;\n  this.pingTimeout = data.pingTimeout;\n  this.onOpen();\n  // In case open handler closes socket\n  if  ('closed' == this.readyState) return;\n  this.setPing();\n\n  // Prolong liveness of socket on heartbeat\n  this.removeListener('heartbeat', this.onHeartbeat);\n  this.on('heartbeat', this.onHeartbeat);\n};\n\n/**\n * Resets ping timeout.\n *\n * @api private\n */\n\nSocket.prototype.onHeartbeat = function (timeout) {\n  clearTimeout(this.pingTimeoutTimer);\n  var self = this;\n  self.pingTimeoutTimer = setTimeout(function () {\n    if ('closed' == self.readyState) return;\n    self.onClose('ping timeout');\n  }, timeout || (self.pingInterval + self.pingTimeout));\n};\n\n/**\n * Pings server every `this.pingInterval` and expects response\n * within `this.pingTimeout` or closes connection.\n *\n * @api private\n */\n\nSocket.prototype.setPing = function () {\n  var self = this;\n  clearTimeout(self.pingIntervalTimer);\n  self.pingIntervalTimer = setTimeout(function () {\n    debug('writing ping packet - expecting pong within %sms', self.pingTimeout);\n    self.ping();\n    self.onHeartbeat(self.pingTimeout);\n  }, self.pingInterval);\n};\n\n/**\n* Sends a ping packet.\n*\n* @api private\n*/\n\nSocket.prototype.ping = function () {\n  var self = this;\n  this.sendPacket('ping', function(){\n    self.emit('ping');\n  });\n};\n\n/**\n * Called on `drain` event\n *\n * @api private\n */\n\nSocket.prototype.onDrain = function() {\n  this.writeBuffer.splice(0, this.prevBufferLen);\n\n  // setting prevBufferLen = 0 is very important\n  // for example, when upgrading, upgrade packet is sent over,\n  // and a nonzero prevBufferLen could cause problems on `drain`\n  this.prevBufferLen = 0;\n\n  if (0 === this.writeBuffer.length) {\n    this.emit('drain');\n  } else {\n    this.flush();\n  }\n};\n\n/**\n * Flush write buffers.\n *\n * @api private\n */\n\nSocket.prototype.flush = function () {\n  if ('closed' != this.readyState && this.transport.writable &&\n    !this.upgrading && this.writeBuffer.length) {\n    debug('flushing %d packets in socket', this.writeBuffer.length);\n    this.transport.send(this.writeBuffer);\n    // keep track of current length of writeBuffer\n    // splice writeBuffer and callbackBuffer on `drain`\n    this.prevBufferLen = this.writeBuffer.length;\n    this.emit('flush');\n  }\n};\n\n/**\n * Sends a message.\n *\n * @param {String} message.\n * @param {Function} callback function.\n * @param {Object} options.\n * @return {Socket} for chaining.\n * @api public\n */\n\nSocket.prototype.write =\nSocket.prototype.send = function (msg, options, fn) {\n  this.sendPacket('message', msg, options, fn);\n  return this;\n};\n\n/**\n * Sends a packet.\n *\n * @param {String} packet type.\n * @param {String} data.\n * @param {Object} options.\n * @param {Function} callback function.\n * @api private\n */\n\nSocket.prototype.sendPacket = function (type, data, options, fn) {\n  if('function' == typeof data) {\n    fn = data;\n    data = undefined;\n  }\n\n  if ('function' == typeof options) {\n    fn = options;\n    options = null;\n  }\n\n  if ('closing' == this.readyState || 'closed' == this.readyState) {\n    return;\n  }\n\n  options = options || {};\n  options.compress = false !== options.compress;\n\n  var packet = {\n    type: type,\n    data: data,\n    options: options\n  };\n  this.emit('packetCreate', packet);\n  this.writeBuffer.push(packet);\n  if (fn) this.once('flush', fn);\n  this.flush();\n};\n\n/**\n * Closes the connection.\n *\n * @api private\n */\n\nSocket.prototype.close = function () {\n  if ('opening' == this.readyState || 'open' == this.readyState) {\n    this.readyState = 'closing';\n\n    var self = this;\n\n    if (this.writeBuffer.length) {\n      this.once('drain', function() {\n        if (this.upgrading) {\n          waitForUpgrade();\n        } else {\n          close();\n        }\n      });\n    } else if (this.upgrading) {\n      waitForUpgrade();\n    } else {\n      close();\n    }\n  }\n\n  function close() {\n    self.onClose('forced close');\n    debug('socket closing - telling transport to close');\n    self.transport.close();\n  }\n\n  function cleanupAndClose() {\n    self.removeListener('upgrade', cleanupAndClose);\n    self.removeListener('upgradeError', cleanupAndClose);\n    close();\n  }\n\n  function waitForUpgrade() {\n    // wait for upgrade to finish since we can't send packets while pausing a transport\n    self.once('upgrade', cleanupAndClose);\n    self.once('upgradeError', cleanupAndClose);\n  }\n\n  return this;\n};\n\n/**\n * Called upon transport error\n *\n * @api private\n */\n\nSocket.prototype.onError = function (err) {\n  debug('socket error %j', err);\n  Socket.priorWebsocketSuccess = false;\n  this.emit('error', err);\n  this.onClose('transport error', err);\n};\n\n/**\n * Called upon transport close.\n *\n * @api private\n */\n\nSocket.prototype.onClose = function (reason, desc) {\n  if ('opening' == this.readyState || 'open' == this.readyState || 'closing' == this.readyState) {\n    debug('socket close with reason: \"%s\"', reason);\n    var self = this;\n\n    // clear timers\n    clearTimeout(this.pingIntervalTimer);\n    clearTimeout(this.pingTimeoutTimer);\n\n    // stop event from firing again for transport\n    this.transport.removeAllListeners('close');\n\n    // ensure transport won't stay open\n    this.transport.close();\n\n    // ignore further transport communication\n    this.transport.removeAllListeners();\n\n    // set ready state\n    this.readyState = 'closed';\n\n    // clear session id\n    this.id = null;\n\n    // emit close event\n    this.emit('close', reason, desc);\n\n    // clean buffers after, so users can still\n    // grab the buffers on `close` event\n    self.writeBuffer = [];\n    self.prevBufferLen = 0;\n  }\n};\n\n/**\n * Filters upgrades, returning only those matching client transports.\n *\n * @param {Array} server upgrades\n * @api private\n *\n */\n\nSocket.prototype.filterUpgrades = function (upgrades) {\n  var filteredUpgrades = [];\n  for (var i = 0, j = upgrades.length; i<j; i++) {\n    if (~index(this.transports, upgrades[i])) filteredUpgrades.push(upgrades[i]);\n  }\n  return filteredUpgrades;\n};\n","/**\n * Module dependencies.\n */\n\nvar parser = require('engine.io-parser');\nvar Emitter = require('component-emitter');\n\n/**\n * Module exports.\n */\n\nmodule.exports = Transport;\n\n/**\n * Transport abstract constructor.\n *\n * @param {Object} options.\n * @api private\n */\n\nfunction Transport (opts) {\n  this.path = opts.path;\n  this.hostname = opts.hostname;\n  this.port = opts.port;\n  this.secure = opts.secure;\n  this.query = opts.query;\n  this.timestampParam = opts.timestampParam;\n  this.timestampRequests = opts.timestampRequests;\n  this.readyState = '';\n  this.agent = opts.agent || false;\n  this.socket = opts.socket;\n  this.enablesXDR = opts.enablesXDR;\n\n  // SSL options for Node.js client\n  this.pfx = opts.pfx;\n  this.key = opts.key;\n  this.passphrase = opts.passphrase;\n  this.cert = opts.cert;\n  this.ca = opts.ca;\n  this.ciphers = opts.ciphers;\n  this.rejectUnauthorized = opts.rejectUnauthorized;\n\n  // other options for Node.js client\n  this.extraHeaders = opts.extraHeaders;\n}\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Transport.prototype);\n\n/**\n * Emits an error.\n *\n * @param {String} str\n * @return {Transport} for chaining\n * @api public\n */\n\nTransport.prototype.onError = function (msg, desc) {\n  var err = new Error(msg);\n  err.type = 'TransportError';\n  err.description = desc;\n  this.emit('error', err);\n  return this;\n};\n\n/**\n * Opens the transport.\n *\n * @api public\n */\n\nTransport.prototype.open = function () {\n  if ('closed' == this.readyState || '' == this.readyState) {\n    this.readyState = 'opening';\n    this.doOpen();\n  }\n\n  return this;\n};\n\n/**\n * Closes the transport.\n *\n * @api private\n */\n\nTransport.prototype.close = function () {\n  if ('opening' == this.readyState || 'open' == this.readyState) {\n    this.doClose();\n    this.onClose();\n  }\n\n  return this;\n};\n\n/**\n * Sends multiple packets.\n *\n * @param {Array} packets\n * @api private\n */\n\nTransport.prototype.send = function(packets){\n  if ('open' == this.readyState) {\n    this.write(packets);\n  } else {\n    throw new Error('Transport not open');\n  }\n};\n\n/**\n * Called upon open\n *\n * @api private\n */\n\nTransport.prototype.onOpen = function () {\n  this.readyState = 'open';\n  this.writable = true;\n  this.emit('open');\n};\n\n/**\n * Called with data.\n *\n * @param {String} data\n * @api private\n */\n\nTransport.prototype.onData = function(data){\n  var packet = parser.decodePacket(data, this.socket.binaryType);\n  this.onPacket(packet);\n};\n\n/**\n * Called with a decoded packet.\n */\n\nTransport.prototype.onPacket = function (packet) {\n  this.emit('packet', packet);\n};\n\n/**\n * Called upon close.\n *\n * @api private\n */\n\nTransport.prototype.onClose = function () {\n  this.readyState = 'closed';\n  this.emit('close');\n};\n","/**\n * Module dependencies\n */\n\nvar XMLHttpRequest = require('xmlhttprequest-ssl');\nvar XHR = require('./polling-xhr');\nvar JSONP = require('./polling-jsonp');\nvar websocket = require('./websocket');\n\n/**\n * Export transports.\n */\n\nexports.polling = polling;\nexports.websocket = websocket;\n\n/**\n * Polling transport polymorphic constructor.\n * Decides on xhr vs jsonp based on feature detection.\n *\n * @api private\n */\n\nfunction polling(opts){\n  var xhr;\n  var xd = false;\n  var xs = false;\n  var jsonp = false !== opts.jsonp;\n\n  if (global.location) {\n    var isSSL = 'https:' == location.protocol;\n    var port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    xd = opts.hostname != location.hostname || port != opts.port;\n    xs = opts.secure != isSSL;\n  }\n\n  opts.xdomain = xd;\n  opts.xscheme = xs;\n  xhr = new XMLHttpRequest(opts);\n\n  if ('open' in xhr && !opts.forceJSONP) {\n    return new XHR(opts);\n  } else {\n    if (!jsonp) throw new Error('JSONP disabled');\n    return new JSONP(opts);\n  }\n}\n","\n/**\n * Module requirements.\n */\n\nvar Polling = require('./polling');\nvar inherit = require('component-inherit');\n\n/**\n * Module exports.\n */\n\nmodule.exports = JSONPPolling;\n\n/**\n * Cached regular expressions.\n */\n\nvar rNewline = /\\n/g;\nvar rEscapedNewline = /\\\\n/g;\n\n/**\n * Global JSONP callbacks.\n */\n\nvar callbacks;\n\n/**\n * Callbacks count.\n */\n\nvar index = 0;\n\n/**\n * Noop.\n */\n\nfunction empty () { }\n\n/**\n * JSONP Polling constructor.\n *\n * @param {Object} opts.\n * @api public\n */\n\nfunction JSONPPolling (opts) {\n  Polling.call(this, opts);\n\n  this.query = this.query || {};\n\n  // define global callbacks array if not present\n  // we do this here (lazily) to avoid unneeded global pollution\n  if (!callbacks) {\n    // we need to consider multiple engines in the same page\n    if (!global.___eio) global.___eio = [];\n    callbacks = global.___eio;\n  }\n\n  // callback identifier\n  this.index = callbacks.length;\n\n  // add callback to jsonp global\n  var self = this;\n  callbacks.push(function (msg) {\n    self.onData(msg);\n  });\n\n  // append to query string\n  this.query.j = this.index;\n\n  // prevent spurious errors from being emitted when the window is unloaded\n  if (global.document && global.addEventListener) {\n    global.addEventListener('beforeunload', function () {\n      if (self.script) self.script.onerror = empty;\n    }, false);\n  }\n}\n\n/**\n * Inherits from Polling.\n */\n\ninherit(JSONPPolling, Polling);\n\n/*\n * JSONP only supports binary as base64 encoded strings\n */\n\nJSONPPolling.prototype.supportsBinary = false;\n\n/**\n * Closes the socket.\n *\n * @api private\n */\n\nJSONPPolling.prototype.doClose = function () {\n  if (this.script) {\n    this.script.parentNode.removeChild(this.script);\n    this.script = null;\n  }\n\n  if (this.form) {\n    this.form.parentNode.removeChild(this.form);\n    this.form = null;\n    this.iframe = null;\n  }\n\n  Polling.prototype.doClose.call(this);\n};\n\n/**\n * Starts a poll cycle.\n *\n * @api private\n */\n\nJSONPPolling.prototype.doPoll = function () {\n  var self = this;\n  var script = document.createElement('script');\n\n  if (this.script) {\n    this.script.parentNode.removeChild(this.script);\n    this.script = null;\n  }\n\n  script.async = true;\n  script.src = this.uri();\n  script.onerror = function(e){\n    self.onError('jsonp poll error',e);\n  };\n\n  var insertAt = document.getElementsByTagName('script')[0];\n  if (insertAt) {\n    insertAt.parentNode.insertBefore(script, insertAt);\n  }\n  else {\n    (document.head || document.body).appendChild(script);\n  }\n  this.script = script;\n\n  var isUAgecko = 'undefined' != typeof navigator && /gecko/i.test(navigator.userAgent);\n  \n  if (isUAgecko) {\n    setTimeout(function () {\n      var iframe = document.createElement('iframe');\n      document.body.appendChild(iframe);\n      document.body.removeChild(iframe);\n    }, 100);\n  }\n};\n\n/**\n * Writes with a hidden iframe.\n *\n * @param {String} data to send\n * @param {Function} called upon flush.\n * @api private\n */\n\nJSONPPolling.prototype.doWrite = function (data, fn) {\n  var self = this;\n\n  if (!this.form) {\n    var form = document.createElement('form');\n    var area = document.createElement('textarea');\n    var id = this.iframeId = 'eio_iframe_' + this.index;\n    var iframe;\n\n    form.className = 'socketio';\n    form.style.position = 'absolute';\n    form.style.top = '-1000px';\n    form.style.left = '-1000px';\n    form.target = id;\n    form.method = 'POST';\n    form.setAttribute('accept-charset', 'utf-8');\n    area.name = 'd';\n    form.appendChild(area);\n    document.body.appendChild(form);\n\n    this.form = form;\n    this.area = area;\n  }\n\n  this.form.action = this.uri();\n\n  function complete () {\n    initIframe();\n    fn();\n  }\n\n  function initIframe () {\n    if (self.iframe) {\n      try {\n        self.form.removeChild(self.iframe);\n      } catch (e) {\n        self.onError('jsonp polling iframe removal error', e);\n      }\n    }\n\n    try {\n      // ie6 dynamic iframes with target=\"\" support (thanks Chris Lambacher)\n      var html = '<iframe src=\"javascript:0\" name=\"'+ self.iframeId +'\">';\n      iframe = document.createElement(html);\n    } catch (e) {\n      iframe = document.createElement('iframe');\n      iframe.name = self.iframeId;\n      iframe.src = 'javascript:0';\n    }\n\n    iframe.id = self.iframeId;\n\n    self.form.appendChild(iframe);\n    self.iframe = iframe;\n  }\n\n  initIframe();\n\n  // escape \\n to prevent it from being converted into \\r\\n by some UAs\n  // double escaping is required for escaped new lines because unescaping of new lines can be done safely on server-side\n  data = data.replace(rEscapedNewline, '\\\\\\n');\n  this.area.value = data.replace(rNewline, '\\\\n');\n\n  try {\n    this.form.submit();\n  } catch(e) {}\n\n  if (this.iframe.attachEvent) {\n    this.iframe.onreadystatechange = function(){\n      if (self.iframe.readyState == 'complete') {\n        complete();\n      }\n    };\n  } else {\n    this.iframe.onload = complete;\n  }\n};\n","/**\n * Module requirements.\n */\n\nvar XMLHttpRequest = require('xmlhttprequest-ssl');\nvar Polling = require('./polling');\nvar Emitter = require('component-emitter');\nvar inherit = require('component-inherit');\nvar debug = require('debug')('engine.io-client:polling-xhr');\n\n/**\n * Module exports.\n */\n\nmodule.exports = XHR;\nmodule.exports.Request = Request;\n\n/**\n * Empty function\n */\n\nfunction empty(){}\n\n/**\n * XHR Polling constructor.\n *\n * @param {Object} opts\n * @api public\n */\n\nfunction XHR(opts){\n  Polling.call(this, opts);\n\n  if (global.location) {\n    var isSSL = 'https:' == location.protocol;\n    var port = location.port;\n\n    // some user agents have empty `location.port`\n    if (!port) {\n      port = isSSL ? 443 : 80;\n    }\n\n    this.xd = opts.hostname != global.location.hostname ||\n      port != opts.port;\n    this.xs = opts.secure != isSSL;\n  } else {\n    this.extraHeaders = opts.extraHeaders;\n  }\n}\n\n/**\n * Inherits from Polling.\n */\n\ninherit(XHR, Polling);\n\n/**\n * XHR supports binary\n */\n\nXHR.prototype.supportsBinary = true;\n\n/**\n * Creates a request.\n *\n * @param {String} method\n * @api private\n */\n\nXHR.prototype.request = function(opts){\n  opts = opts || {};\n  opts.uri = this.uri();\n  opts.xd = this.xd;\n  opts.xs = this.xs;\n  opts.agent = this.agent || false;\n  opts.supportsBinary = this.supportsBinary;\n  opts.enablesXDR = this.enablesXDR;\n\n  // SSL options for Node.js client\n  opts.pfx = this.pfx;\n  opts.key = this.key;\n  opts.passphrase = this.passphrase;\n  opts.cert = this.cert;\n  opts.ca = this.ca;\n  opts.ciphers = this.ciphers;\n  opts.rejectUnauthorized = this.rejectUnauthorized;\n\n  // other options for Node.js client\n  opts.extraHeaders = this.extraHeaders;\n\n  return new Request(opts);\n};\n\n/**\n * Sends data.\n *\n * @param {String} data to send.\n * @param {Function} called upon flush.\n * @api private\n */\n\nXHR.prototype.doWrite = function(data, fn){\n  var isBinary = typeof data !== 'string' && data !== undefined;\n  var req = this.request({ method: 'POST', data: data, isBinary: isBinary });\n  var self = this;\n  req.on('success', fn);\n  req.on('error', function(err){\n    self.onError('xhr post error', err);\n  });\n  this.sendXhr = req;\n};\n\n/**\n * Starts a poll cycle.\n *\n * @api private\n */\n\nXHR.prototype.doPoll = function(){\n  debug('xhr poll');\n  var req = this.request();\n  var self = this;\n  req.on('data', function(data){\n    self.onData(data);\n  });\n  req.on('error', function(err){\n    self.onError('xhr poll error', err);\n  });\n  this.pollXhr = req;\n};\n\n/**\n * Request constructor\n *\n * @param {Object} options\n * @api public\n */\n\nfunction Request(opts){\n  this.method = opts.method || 'GET';\n  this.uri = opts.uri;\n  this.xd = !!opts.xd;\n  this.xs = !!opts.xs;\n  this.async = false !== opts.async;\n  this.data = undefined != opts.data ? opts.data : null;\n  this.agent = opts.agent;\n  this.isBinary = opts.isBinary;\n  this.supportsBinary = opts.supportsBinary;\n  this.enablesXDR = opts.enablesXDR;\n\n  // SSL options for Node.js client\n  this.pfx = opts.pfx;\n  this.key = opts.key;\n  this.passphrase = opts.passphrase;\n  this.cert = opts.cert;\n  this.ca = opts.ca;\n  this.ciphers = opts.ciphers;\n  this.rejectUnauthorized = opts.rejectUnauthorized;\n\n  // other options for Node.js client\n  this.extraHeaders = opts.extraHeaders;\n\n  this.create();\n}\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Request.prototype);\n\n/**\n * Creates the XHR object and sends the request.\n *\n * @api private\n */\n\nRequest.prototype.create = function(){\n  var opts = { agent: this.agent, xdomain: this.xd, xscheme: this.xs, enablesXDR: this.enablesXDR };\n\n  // SSL options for Node.js client\n  opts.pfx = this.pfx;\n  opts.key = this.key;\n  opts.passphrase = this.passphrase;\n  opts.cert = this.cert;\n  opts.ca = this.ca;\n  opts.ciphers = this.ciphers;\n  opts.rejectUnauthorized = this.rejectUnauthorized;\n\n  var xhr = this.xhr = new XMLHttpRequest(opts);\n  var self = this;\n\n  try {\n    debug('xhr open %s: %s', this.method, this.uri);\n    xhr.open(this.method, this.uri, this.async);\n    try {\n      if (this.extraHeaders) {\n        xhr.setDisableHeaderCheck(true);\n        for (var i in this.extraHeaders) {\n          if (this.extraHeaders.hasOwnProperty(i)) {\n            xhr.setRequestHeader(i, this.extraHeaders[i]);\n          }\n        }\n      }\n    } catch (e) {}\n    if (this.supportsBinary) {\n      // This has to be done after open because Firefox is stupid\n      // http://stackoverflow.com/questions/13216903/get-binary-data-with-xmlhttprequest-in-a-firefox-extension\n      xhr.responseType = 'arraybuffer';\n    }\n\n    if ('POST' == this.method) {\n      try {\n        if (this.isBinary) {\n          xhr.setRequestHeader('Content-type', 'application/octet-stream');\n        } else {\n          xhr.setRequestHeader('Content-type', 'text/plain;charset=UTF-8');\n        }\n      } catch (e) {}\n    }\n\n    // ie6 check\n    if ('withCredentials' in xhr) {\n      xhr.withCredentials = true;\n    }\n\n    if (this.hasXDR()) {\n      xhr.onload = function(){\n        self.onLoad();\n      };\n      xhr.onerror = function(){\n        self.onError(xhr.responseText);\n      };\n    } else {\n      xhr.onreadystatechange = function(){\n        if (4 != xhr.readyState) return;\n        if (200 == xhr.status || 1223 == xhr.status) {\n          self.onLoad();\n        } else {\n          // make sure the `error` event handler that's user-set\n          // does not throw in the same tick and gets caught here\n          setTimeout(function(){\n            self.onError(xhr.status);\n          }, 0);\n        }\n      };\n    }\n\n    debug('xhr data %s', this.data);\n    xhr.send(this.data);\n  } catch (e) {\n    // Need to defer since .create() is called directly fhrom the constructor\n    // and thus the 'error' event can only be only bound *after* this exception\n    // occurs.  Therefore, also, we cannot throw here at all.\n    setTimeout(function() {\n      self.onError(e);\n    }, 0);\n    return;\n  }\n\n  if (global.document) {\n    this.index = Request.requestsCount++;\n    Request.requests[this.index] = this;\n  }\n};\n\n/**\n * Called upon successful response.\n *\n * @api private\n */\n\nRequest.prototype.onSuccess = function(){\n  this.emit('success');\n  this.cleanup();\n};\n\n/**\n * Called if we have data.\n *\n * @api private\n */\n\nRequest.prototype.onData = function(data){\n  this.emit('data', data);\n  this.onSuccess();\n};\n\n/**\n * Called upon error.\n *\n * @api private\n */\n\nRequest.prototype.onError = function(err){\n  this.emit('error', err);\n  this.cleanup(true);\n};\n\n/**\n * Cleans up house.\n *\n * @api private\n */\n\nRequest.prototype.cleanup = function(fromError){\n  if ('undefined' == typeof this.xhr || null === this.xhr) {\n    return;\n  }\n  // xmlhttprequest\n  if (this.hasXDR()) {\n    this.xhr.onload = this.xhr.onerror = empty;\n  } else {\n    this.xhr.onreadystatechange = empty;\n  }\n\n  if (fromError) {\n    try {\n      this.xhr.abort();\n    } catch(e) {}\n  }\n\n  if (global.document) {\n    delete Request.requests[this.index];\n  }\n\n  this.xhr = null;\n};\n\n/**\n * Called upon load.\n *\n * @api private\n */\n\nRequest.prototype.onLoad = function(){\n  var data;\n  try {\n    var contentType;\n    try {\n      contentType = this.xhr.getResponseHeader('Content-Type').split(';')[0];\n    } catch (e) {}\n    if (contentType === 'application/octet-stream') {\n      data = this.xhr.response;\n    } else {\n      if (!this.supportsBinary) {\n        data = this.xhr.responseText;\n      } else {\n        try {\n          data = String.fromCharCode.apply(null, new Uint8Array(this.xhr.response));\n        } catch (e) {\n          var ui8Arr = new Uint8Array(this.xhr.response);\n          var dataArray = [];\n          for (var idx = 0, length = ui8Arr.length; idx < length; idx++) {\n            dataArray.push(ui8Arr[idx]);\n          }\n\n          data = String.fromCharCode.apply(null, dataArray);\n        }\n      }\n    }\n  } catch (e) {\n    this.onError(e);\n  }\n  if (null != data) {\n    this.onData(data);\n  }\n};\n\n/**\n * Check if it has XDomainRequest.\n *\n * @api private\n */\n\nRequest.prototype.hasXDR = function(){\n  return 'undefined' !== typeof global.XDomainRequest && !this.xs && this.enablesXDR;\n};\n\n/**\n * Aborts the request.\n *\n * @api public\n */\n\nRequest.prototype.abort = function(){\n  this.cleanup();\n};\n\n/**\n * Aborts pending requests when unloading the window. This is needed to prevent\n * memory leaks (e.g. when using IE) and to ensure that no spurious error is\n * emitted.\n */\n\nif (global.document) {\n  Request.requestsCount = 0;\n  Request.requests = {};\n  if (global.attachEvent) {\n    global.attachEvent('onunload', unloadHandler);\n  } else if (global.addEventListener) {\n    global.addEventListener('beforeunload', unloadHandler, false);\n  }\n}\n\nfunction unloadHandler() {\n  for (var i in Request.requests) {\n    if (Request.requests.hasOwnProperty(i)) {\n      Request.requests[i].abort();\n    }\n  }\n}\n","/**\n * Module dependencies.\n */\n\nvar Transport = require('../transport');\nvar parseqs = require('parseqs');\nvar parser = require('engine.io-parser');\nvar inherit = require('component-inherit');\nvar yeast = require('yeast');\nvar debug = require('debug')('engine.io-client:polling');\n\n/**\n * Module exports.\n */\n\nmodule.exports = Polling;\n\n/**\n * Is XHR2 supported?\n */\n\nvar hasXHR2 = (function() {\n  var XMLHttpRequest = require('xmlhttprequest-ssl');\n  var xhr = new XMLHttpRequest({ xdomain: false });\n  return null != xhr.responseType;\n})();\n\n/**\n * Polling interface.\n *\n * @param {Object} opts\n * @api private\n */\n\nfunction Polling(opts){\n  var forceBase64 = (opts && opts.forceBase64);\n  if (!hasXHR2 || forceBase64) {\n    this.supportsBinary = false;\n  }\n  Transport.call(this, opts);\n}\n\n/**\n * Inherits from Transport.\n */\n\ninherit(Polling, Transport);\n\n/**\n * Transport name.\n */\n\nPolling.prototype.name = 'polling';\n\n/**\n * Opens the socket (triggers polling). We write a PING message to determine\n * when the transport is open.\n *\n * @api private\n */\n\nPolling.prototype.doOpen = function(){\n  this.poll();\n};\n\n/**\n * Pauses polling.\n *\n * @param {Function} callback upon buffers are flushed and transport is paused\n * @api private\n */\n\nPolling.prototype.pause = function(onPause){\n  var pending = 0;\n  var self = this;\n\n  this.readyState = 'pausing';\n\n  function pause(){\n    debug('paused');\n    self.readyState = 'paused';\n    onPause();\n  }\n\n  if (this.polling || !this.writable) {\n    var total = 0;\n\n    if (this.polling) {\n      debug('we are currently polling - waiting to pause');\n      total++;\n      this.once('pollComplete', function(){\n        debug('pre-pause polling complete');\n        --total || pause();\n      });\n    }\n\n    if (!this.writable) {\n      debug('we are currently writing - waiting to pause');\n      total++;\n      this.once('drain', function(){\n        debug('pre-pause writing complete');\n        --total || pause();\n      });\n    }\n  } else {\n    pause();\n  }\n};\n\n/**\n * Starts polling cycle.\n *\n * @api public\n */\n\nPolling.prototype.poll = function(){\n  debug('polling');\n  this.polling = true;\n  this.doPoll();\n  this.emit('poll');\n};\n\n/**\n * Overloads onData to detect payloads.\n *\n * @api private\n */\n\nPolling.prototype.onData = function(data){\n  var self = this;\n  debug('polling got data %s', data);\n  var callback = function(packet, index, total) {\n    // if its the first message we consider the transport open\n    if ('opening' == self.readyState) {\n      self.onOpen();\n    }\n\n    // if its a close packet, we close the ongoing requests\n    if ('close' == packet.type) {\n      self.onClose();\n      return false;\n    }\n\n    // otherwise bypass onData and handle the message\n    self.onPacket(packet);\n  };\n\n  // decode payload\n  parser.decodePayload(data, this.socket.binaryType, callback);\n\n  // if an event did not trigger closing\n  if ('closed' != this.readyState) {\n    // if we got data we're not polling\n    this.polling = false;\n    this.emit('pollComplete');\n\n    if ('open' == this.readyState) {\n      this.poll();\n    } else {\n      debug('ignoring poll - transport state \"%s\"', this.readyState);\n    }\n  }\n};\n\n/**\n * For polling, send a close packet.\n *\n * @api private\n */\n\nPolling.prototype.doClose = function(){\n  var self = this;\n\n  function close(){\n    debug('writing close packet');\n    self.write([{ type: 'close' }]);\n  }\n\n  if ('open' == this.readyState) {\n    debug('transport open - closing');\n    close();\n  } else {\n    // in case we're trying to close while\n    // handshaking is in progress (GH-164)\n    debug('transport not open - deferring close');\n    this.once('open', close);\n  }\n};\n\n/**\n * Writes a packets payload.\n *\n * @param {Array} data packets\n * @param {Function} drain callback\n * @api private\n */\n\nPolling.prototype.write = function(packets){\n  var self = this;\n  this.writable = false;\n  var callbackfn = function() {\n    self.writable = true;\n    self.emit('drain');\n  };\n\n  var self = this;\n  parser.encodePayload(packets, this.supportsBinary, function(data) {\n    self.doWrite(data, callbackfn);\n  });\n};\n\n/**\n * Generates uri for connection.\n *\n * @api private\n */\n\nPolling.prototype.uri = function(){\n  var query = this.query || {};\n  var schema = this.secure ? 'https' : 'http';\n  var port = '';\n\n  // cache busting is forced\n  if (false !== this.timestampRequests) {\n    query[this.timestampParam] = yeast();\n  }\n\n  if (!this.supportsBinary && !query.sid) {\n    query.b64 = 1;\n  }\n\n  query = parseqs.encode(query);\n\n  // avoid port if default for schema\n  if (this.port && (('https' == schema && this.port != 443) ||\n     ('http' == schema && this.port != 80))) {\n    port = ':' + this.port;\n  }\n\n  // prepend ? to query\n  if (query.length) {\n    query = '?' + query;\n  }\n\n  var ipv6 = this.hostname.indexOf(':') !== -1;\n  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;\n};\n","/**\n * Module dependencies.\n */\n\nvar Transport = require('../transport');\nvar parser = require('engine.io-parser');\nvar parseqs = require('parseqs');\nvar inherit = require('component-inherit');\nvar yeast = require('yeast');\nvar debug = require('debug')('engine.io-client:websocket');\nvar BrowserWebSocket = global.WebSocket || global.MozWebSocket;\n\n/**\n * Get either the `WebSocket` or `MozWebSocket` globals\n * in the browser or try to resolve WebSocket-compatible\n * interface exposed by `ws` for Node-like environment.\n */\n\nvar WebSocket = BrowserWebSocket;\nif (!WebSocket && typeof window === 'undefined') {\n  try {\n    WebSocket = require('ws');\n  } catch (e) { }\n}\n\n/**\n * Module exports.\n */\n\nmodule.exports = WS;\n\n/**\n * WebSocket transport constructor.\n *\n * @api {Object} connection options\n * @api public\n */\n\nfunction WS(opts){\n  var forceBase64 = (opts && opts.forceBase64);\n  if (forceBase64) {\n    this.supportsBinary = false;\n  }\n  this.perMessageDeflate = opts.perMessageDeflate;\n  Transport.call(this, opts);\n}\n\n/**\n * Inherits from Transport.\n */\n\ninherit(WS, Transport);\n\n/**\n * Transport name.\n *\n * @api public\n */\n\nWS.prototype.name = 'websocket';\n\n/*\n * WebSockets support binary\n */\n\nWS.prototype.supportsBinary = true;\n\n/**\n * Opens socket.\n *\n * @api private\n */\n\nWS.prototype.doOpen = function(){\n  if (!this.check()) {\n    // let probe timeout\n    return;\n  }\n\n  var self = this;\n  var uri = this.uri();\n  var protocols = void(0);\n  var opts = {\n    agent: this.agent,\n    perMessageDeflate: this.perMessageDeflate\n  };\n\n  // SSL options for Node.js client\n  opts.pfx = this.pfx;\n  opts.key = this.key;\n  opts.passphrase = this.passphrase;\n  opts.cert = this.cert;\n  opts.ca = this.ca;\n  opts.ciphers = this.ciphers;\n  opts.rejectUnauthorized = this.rejectUnauthorized;\n  if (this.extraHeaders) {\n    opts.headers = this.extraHeaders;\n  }\n\n  this.ws = BrowserWebSocket ? new WebSocket(uri) : new WebSocket(uri, protocols, opts);\n\n  if (this.ws.binaryType === undefined) {\n    this.supportsBinary = false;\n  }\n\n  if (this.ws.supports && this.ws.supports.binary) {\n    this.supportsBinary = true;\n    this.ws.binaryType = 'buffer';\n  } else {\n    this.ws.binaryType = 'arraybuffer';\n  }\n\n  this.addEventListeners();\n};\n\n/**\n * Adds event listeners to the socket\n *\n * @api private\n */\n\nWS.prototype.addEventListeners = function(){\n  var self = this;\n\n  this.ws.onopen = function(){\n    self.onOpen();\n  };\n  this.ws.onclose = function(){\n    self.onClose();\n  };\n  this.ws.onmessage = function(ev){\n    self.onData(ev.data);\n  };\n  this.ws.onerror = function(e){\n    self.onError('websocket error', e);\n  };\n};\n\n/**\n * Override `onData` to use a timer on iOS.\n * See: https://gist.github.com/mloughran/2052006\n *\n * @api private\n */\n\nif ('undefined' != typeof navigator\n  && /iPad|iPhone|iPod/i.test(navigator.userAgent)) {\n  WS.prototype.onData = function(data){\n    var self = this;\n    setTimeout(function(){\n      Transport.prototype.onData.call(self, data);\n    }, 0);\n  };\n}\n\n/**\n * Writes data to socket.\n *\n * @param {Array} array of packets.\n * @api private\n */\n\nWS.prototype.write = function(packets){\n  var self = this;\n  this.writable = false;\n\n  // encodePacket efficient as it uses WS framing\n  // no need for encodePayload\n  var total = packets.length;\n  for (var i = 0, l = total; i < l; i++) {\n    (function(packet) {\n      parser.encodePacket(packet, self.supportsBinary, function(data) {\n        if (!BrowserWebSocket) {\n          // always create a new object (GH-437)\n          var opts = {};\n          if (packet.options) {\n            opts.compress = packet.options.compress;\n          }\n\n          if (self.perMessageDeflate) {\n            var len = 'string' == typeof data ? global.Buffer.byteLength(data) : data.length;\n            if (len < self.perMessageDeflate.threshold) {\n              opts.compress = false;\n            }\n          }\n        }\n\n        //Sometimes the websocket has already been closed but the browser didn't\n        //have a chance of informing us about it yet, in that case send will\n        //throw an error\n        try {\n          if (BrowserWebSocket) {\n            // TypeError is thrown when passing the second argument on Safari\n            self.ws.send(data);\n          } else {\n            self.ws.send(data, opts);\n          }\n        } catch (e){\n          debug('websocket closed before onclose event');\n        }\n\n        --total || done();\n      });\n    })(packets[i]);\n  }\n\n  function done(){\n    self.emit('flush');\n\n    // fake drain\n    // defer to next tick to allow Socket to clear writeBuffer\n    setTimeout(function(){\n      self.writable = true;\n      self.emit('drain');\n    }, 0);\n  }\n};\n\n/**\n * Called upon close\n *\n * @api private\n */\n\nWS.prototype.onClose = function(){\n  Transport.prototype.onClose.call(this);\n};\n\n/**\n * Closes socket.\n *\n * @api private\n */\n\nWS.prototype.doClose = function(){\n  if (typeof this.ws !== 'undefined') {\n    this.ws.close();\n  }\n};\n\n/**\n * Generates uri for connection.\n *\n * @api private\n */\n\nWS.prototype.uri = function(){\n  var query = this.query || {};\n  var schema = this.secure ? 'wss' : 'ws';\n  var port = '';\n\n  // avoid port if default for schema\n  if (this.port && (('wss' == schema && this.port != 443)\n    || ('ws' == schema && this.port != 80))) {\n    port = ':' + this.port;\n  }\n\n  // append timestamp to URI\n  if (this.timestampRequests) {\n    query[this.timestampParam] = yeast();\n  }\n\n  // communicate binary support capabilities\n  if (!this.supportsBinary) {\n    query.b64 = 1;\n  }\n\n  query = parseqs.encode(query);\n\n  // prepend ? to query\n  if (query.length) {\n    query = '?' + query;\n  }\n\n  var ipv6 = this.hostname.indexOf(':') !== -1;\n  return schema + '://' + (ipv6 ? '[' + this.hostname + ']' : this.hostname) + port + this.path + query;\n};\n\n/**\n * Feature detection for WebSocket.\n *\n * @return {Boolean} whether this transport is available.\n * @api public\n */\n\nWS.prototype.check = function(){\n  return !!WebSocket && !('__initialize' in WebSocket && this.name === WS.prototype.name);\n};\n","// browser shim for xmlhttprequest module\nvar hasCORS = require('has-cors');\n\nmodule.exports = function(opts) {\n  var xdomain = opts.xdomain;\n\n  // scheme must be same when usign XDomainRequest\n  // http://blogs.msdn.com/b/ieinternals/archive/2010/05/13/xdomainrequest-restrictions-limitations-and-workarounds.aspx\n  var xscheme = opts.xscheme;\n\n  // XDomainRequest has a flow of not sending cookie, therefore it should be disabled as a default.\n  // https://github.com/Automattic/engine.io-client/pull/217\n  var enablesXDR = opts.enablesXDR;\n\n  // XMLHttpRequest can be disabled on IE\n  try {\n    if ('undefined' != typeof XMLHttpRequest && (!xdomain || hasCORS)) {\n      return new XMLHttpRequest();\n    }\n  } catch (e) { }\n\n  // Use XDomainRequest for IE8 if enablesXDR is true\n  // because loading bar keeps flashing when using jsonp-polling\n  // https://github.com/yujiosaka/socke.io-ie8-loading-example\n  try {\n    if ('undefined' != typeof XDomainRequest && !xscheme && enablesXDR) {\n      return new XDomainRequest();\n    }\n  } catch (e) { }\n\n  if (!xdomain) {\n    try {\n      return new ActiveXObject('Microsoft.XMLHTTP');\n    } catch(e) { }\n  }\n}\n","/**\n * Module dependencies.\n */\n\nvar keys = require('./keys');\nvar hasBinary = require('has-binary');\nvar sliceBuffer = require('arraybuffer.slice');\nvar base64encoder = require('base64-arraybuffer');\nvar after = require('after');\nvar utf8 = require('utf8');\n\n/**\n * Check if we are running an android browser. That requires us to use\n * ArrayBuffer with polling transports...\n *\n * http://ghinda.net/jpeg-blob-ajax-android/\n */\n\nvar isAndroid = navigator.userAgent.match(/Android/i);\n\n/**\n * Check if we are running in PhantomJS.\n * Uploading a Blob with PhantomJS does not work correctly, as reported here:\n * https://github.com/ariya/phantomjs/issues/11395\n * @type boolean\n */\nvar isPhantomJS = /PhantomJS/i.test(navigator.userAgent);\n\n/**\n * When true, avoids using Blobs to encode payloads.\n * @type boolean\n */\nvar dontSendBlobs = isAndroid || isPhantomJS;\n\n/**\n * Current protocol version.\n */\n\nexports.protocol = 3;\n\n/**\n * Packet types.\n */\n\nvar packets = exports.packets = {\n    open:     0    // non-ws\n  , close:    1    // non-ws\n  , ping:     2\n  , pong:     3\n  , message:  4\n  , upgrade:  5\n  , noop:     6\n};\n\nvar packetslist = keys(packets);\n\n/**\n * Premade error packet.\n */\n\nvar err = { type: 'error', data: 'parser error' };\n\n/**\n * Create a blob api even for blob builder when vendor prefixes exist\n */\n\nvar Blob = require('blob');\n\n/**\n * Encodes a packet.\n *\n *     <packet type id> [ <data> ]\n *\n * Example:\n *\n *     5hello world\n *     3\n *     4\n *\n * Binary is encoded in an identical principle\n *\n * @api private\n */\n\nexports.encodePacket = function (packet, supportsBinary, utf8encode, callback) {\n  if ('function' == typeof supportsBinary) {\n    callback = supportsBinary;\n    supportsBinary = false;\n  }\n\n  if ('function' == typeof utf8encode) {\n    callback = utf8encode;\n    utf8encode = null;\n  }\n\n  var data = (packet.data === undefined)\n    ? undefined\n    : packet.data.buffer || packet.data;\n\n  if (global.ArrayBuffer && data instanceof ArrayBuffer) {\n    return encodeArrayBuffer(packet, supportsBinary, callback);\n  } else if (Blob && data instanceof global.Blob) {\n    return encodeBlob(packet, supportsBinary, callback);\n  }\n\n  // might be an object with { base64: true, data: dataAsBase64String }\n  if (data && data.base64) {\n    return encodeBase64Object(packet, callback);\n  }\n\n  // Sending data as a utf-8 string\n  var encoded = packets[packet.type];\n\n  // data fragment is optional\n  if (undefined !== packet.data) {\n    encoded += utf8encode ? utf8.encode(String(packet.data)) : String(packet.data);\n  }\n\n  return callback('' + encoded);\n\n};\n\nfunction encodeBase64Object(packet, callback) {\n  // packet data is an object { base64: true, data: dataAsBase64String }\n  var message = 'b' + exports.packets[packet.type] + packet.data.data;\n  return callback(message);\n}\n\n/**\n * Encode packet helpers for binary types\n */\n\nfunction encodeArrayBuffer(packet, supportsBinary, callback) {\n  if (!supportsBinary) {\n    return exports.encodeBase64Packet(packet, callback);\n  }\n\n  var data = packet.data;\n  var contentArray = new Uint8Array(data);\n  var resultBuffer = new Uint8Array(1 + data.byteLength);\n\n  resultBuffer[0] = packets[packet.type];\n  for (var i = 0; i < contentArray.length; i++) {\n    resultBuffer[i+1] = contentArray[i];\n  }\n\n  return callback(resultBuffer.buffer);\n}\n\nfunction encodeBlobAsArrayBuffer(packet, supportsBinary, callback) {\n  if (!supportsBinary) {\n    return exports.encodeBase64Packet(packet, callback);\n  }\n\n  var fr = new FileReader();\n  fr.onload = function() {\n    packet.data = fr.result;\n    exports.encodePacket(packet, supportsBinary, true, callback);\n  };\n  return fr.readAsArrayBuffer(packet.data);\n}\n\nfunction encodeBlob(packet, supportsBinary, callback) {\n  if (!supportsBinary) {\n    return exports.encodeBase64Packet(packet, callback);\n  }\n\n  if (dontSendBlobs) {\n    return encodeBlobAsArrayBuffer(packet, supportsBinary, callback);\n  }\n\n  var length = new Uint8Array(1);\n  length[0] = packets[packet.type];\n  var blob = new Blob([length.buffer, packet.data]);\n\n  return callback(blob);\n}\n\n/**\n * Encodes a packet with binary data in a base64 string\n *\n * @param {Object} packet, has `type` and `data`\n * @return {String} base64 encoded message\n */\n\nexports.encodeBase64Packet = function(packet, callback) {\n  var message = 'b' + exports.packets[packet.type];\n  if (Blob && packet.data instanceof global.Blob) {\n    var fr = new FileReader();\n    fr.onload = function() {\n      var b64 = fr.result.split(',')[1];\n      callback(message + b64);\n    };\n    return fr.readAsDataURL(packet.data);\n  }\n\n  var b64data;\n  try {\n    b64data = String.fromCharCode.apply(null, new Uint8Array(packet.data));\n  } catch (e) {\n    // iPhone Safari doesn't let you apply with typed arrays\n    var typed = new Uint8Array(packet.data);\n    var basic = new Array(typed.length);\n    for (var i = 0; i < typed.length; i++) {\n      basic[i] = typed[i];\n    }\n    b64data = String.fromCharCode.apply(null, basic);\n  }\n  message += global.btoa(b64data);\n  return callback(message);\n};\n\n/**\n * Decodes a packet. Changes format to Blob if requested.\n *\n * @return {Object} with `type` and `data` (if any)\n * @api private\n */\n\nexports.decodePacket = function (data, binaryType, utf8decode) {\n  // String data\n  if (typeof data == 'string' || data === undefined) {\n    if (data.charAt(0) == 'b') {\n      return exports.decodeBase64Packet(data.substr(1), binaryType);\n    }\n\n    if (utf8decode) {\n      try {\n        data = utf8.decode(data);\n      } catch (e) {\n        return err;\n      }\n    }\n    var type = data.charAt(0);\n\n    if (Number(type) != type || !packetslist[type]) {\n      return err;\n    }\n\n    if (data.length > 1) {\n      return { type: packetslist[type], data: data.substring(1) };\n    } else {\n      return { type: packetslist[type] };\n    }\n  }\n\n  var asArray = new Uint8Array(data);\n  var type = asArray[0];\n  var rest = sliceBuffer(data, 1);\n  if (Blob && binaryType === 'blob') {\n    rest = new Blob([rest]);\n  }\n  return { type: packetslist[type], data: rest };\n};\n\n/**\n * Decodes a packet encoded in a base64 string\n *\n * @param {String} base64 encoded message\n * @return {Object} with `type` and `data` (if any)\n */\n\nexports.decodeBase64Packet = function(msg, binaryType) {\n  var type = packetslist[msg.charAt(0)];\n  if (!global.ArrayBuffer) {\n    return { type: type, data: { base64: true, data: msg.substr(1) } };\n  }\n\n  var data = base64encoder.decode(msg.substr(1));\n\n  if (binaryType === 'blob' && Blob) {\n    data = new Blob([data]);\n  }\n\n  return { type: type, data: data };\n};\n\n/**\n * Encodes multiple messages (payload).\n *\n *     <length>:data\n *\n * Example:\n *\n *     11:hello world2:hi\n *\n * If any contents are binary, they will be encoded as base64 strings. Base64\n * encoded strings are marked with a b before the length specifier\n *\n * @param {Array} packets\n * @api private\n */\n\nexports.encodePayload = function (packets, supportsBinary, callback) {\n  if (typeof supportsBinary == 'function') {\n    callback = supportsBinary;\n    supportsBinary = null;\n  }\n\n  var isBinary = hasBinary(packets);\n\n  if (supportsBinary && isBinary) {\n    if (Blob && !dontSendBlobs) {\n      return exports.encodePayloadAsBlob(packets, callback);\n    }\n\n    return exports.encodePayloadAsArrayBuffer(packets, callback);\n  }\n\n  if (!packets.length) {\n    return callback('0:');\n  }\n\n  function setLengthHeader(message) {\n    return message.length + ':' + message;\n  }\n\n  function encodeOne(packet, doneCallback) {\n    exports.encodePacket(packet, !isBinary ? false : supportsBinary, true, function(message) {\n      doneCallback(null, setLengthHeader(message));\n    });\n  }\n\n  map(packets, encodeOne, function(err, results) {\n    return callback(results.join(''));\n  });\n};\n\n/**\n * Async array map using after\n */\n\nfunction map(ary, each, done) {\n  var result = new Array(ary.length);\n  var next = after(ary.length, done);\n\n  var eachWithIndex = function(i, el, cb) {\n    each(el, function(error, msg) {\n      result[i] = msg;\n      cb(error, result);\n    });\n  };\n\n  for (var i = 0; i < ary.length; i++) {\n    eachWithIndex(i, ary[i], next);\n  }\n}\n\n/*\n * Decodes data when a payload is maybe expected. Possible binary contents are\n * decoded from their base64 representation\n *\n * @param {String} data, callback method\n * @api public\n */\n\nexports.decodePayload = function (data, binaryType, callback) {\n  if (typeof data != 'string') {\n    return exports.decodePayloadAsBinary(data, binaryType, callback);\n  }\n\n  if (typeof binaryType === 'function') {\n    callback = binaryType;\n    binaryType = null;\n  }\n\n  var packet;\n  if (data == '') {\n    // parser error - ignoring payload\n    return callback(err, 0, 1);\n  }\n\n  var length = ''\n    , n, msg;\n\n  for (var i = 0, l = data.length; i < l; i++) {\n    var chr = data.charAt(i);\n\n    if (':' != chr) {\n      length += chr;\n    } else {\n      if ('' == length || (length != (n = Number(length)))) {\n        // parser error - ignoring payload\n        return callback(err, 0, 1);\n      }\n\n      msg = data.substr(i + 1, n);\n\n      if (length != msg.length) {\n        // parser error - ignoring payload\n        return callback(err, 0, 1);\n      }\n\n      if (msg.length) {\n        packet = exports.decodePacket(msg, binaryType, true);\n\n        if (err.type == packet.type && err.data == packet.data) {\n          // parser error in individual packet - ignoring payload\n          return callback(err, 0, 1);\n        }\n\n        var ret = callback(packet, i + n, l);\n        if (false === ret) return;\n      }\n\n      // advance cursor\n      i += n;\n      length = '';\n    }\n  }\n\n  if (length != '') {\n    // parser error - ignoring payload\n    return callback(err, 0, 1);\n  }\n\n};\n\n/**\n * Encodes multiple messages (payload) as binary.\n *\n * <1 = binary, 0 = string><number from 0-9><number from 0-9>[...]<number\n * 255><data>\n *\n * Example:\n * 1 3 255 1 2 3, if the binary contents are interpreted as 8 bit integers\n *\n * @param {Array} packets\n * @return {ArrayBuffer} encoded payload\n * @api private\n */\n\nexports.encodePayloadAsArrayBuffer = function(packets, callback) {\n  if (!packets.length) {\n    return callback(new ArrayBuffer(0));\n  }\n\n  function encodeOne(packet, doneCallback) {\n    exports.encodePacket(packet, true, true, function(data) {\n      return doneCallback(null, data);\n    });\n  }\n\n  map(packets, encodeOne, function(err, encodedPackets) {\n    var totalLength = encodedPackets.reduce(function(acc, p) {\n      var len;\n      if (typeof p === 'string'){\n        len = p.length;\n      } else {\n        len = p.byteLength;\n      }\n      return acc + len.toString().length + len + 2; // string/binary identifier + separator = 2\n    }, 0);\n\n    var resultArray = new Uint8Array(totalLength);\n\n    var bufferIndex = 0;\n    encodedPackets.forEach(function(p) {\n      var isString = typeof p === 'string';\n      var ab = p;\n      if (isString) {\n        var view = new Uint8Array(p.length);\n        for (var i = 0; i < p.length; i++) {\n          view[i] = p.charCodeAt(i);\n        }\n        ab = view.buffer;\n      }\n\n      if (isString) { // not true binary\n        resultArray[bufferIndex++] = 0;\n      } else { // true binary\n        resultArray[bufferIndex++] = 1;\n      }\n\n      var lenStr = ab.byteLength.toString();\n      for (var i = 0; i < lenStr.length; i++) {\n        resultArray[bufferIndex++] = parseInt(lenStr[i]);\n      }\n      resultArray[bufferIndex++] = 255;\n\n      var view = new Uint8Array(ab);\n      for (var i = 0; i < view.length; i++) {\n        resultArray[bufferIndex++] = view[i];\n      }\n    });\n\n    return callback(resultArray.buffer);\n  });\n};\n\n/**\n * Encode as Blob\n */\n\nexports.encodePayloadAsBlob = function(packets, callback) {\n  function encodeOne(packet, doneCallback) {\n    exports.encodePacket(packet, true, true, function(encoded) {\n      var binaryIdentifier = new Uint8Array(1);\n      binaryIdentifier[0] = 1;\n      if (typeof encoded === 'string') {\n        var view = new Uint8Array(encoded.length);\n        for (var i = 0; i < encoded.length; i++) {\n          view[i] = encoded.charCodeAt(i);\n        }\n        encoded = view.buffer;\n        binaryIdentifier[0] = 0;\n      }\n\n      var len = (encoded instanceof ArrayBuffer)\n        ? encoded.byteLength\n        : encoded.size;\n\n      var lenStr = len.toString();\n      var lengthAry = new Uint8Array(lenStr.length + 1);\n      for (var i = 0; i < lenStr.length; i++) {\n        lengthAry[i] = parseInt(lenStr[i]);\n      }\n      lengthAry[lenStr.length] = 255;\n\n      if (Blob) {\n        var blob = new Blob([binaryIdentifier.buffer, lengthAry.buffer, encoded]);\n        doneCallback(null, blob);\n      }\n    });\n  }\n\n  map(packets, encodeOne, function(err, results) {\n    return callback(new Blob(results));\n  });\n};\n\n/*\n * Decodes data when a payload is maybe expected. Strings are decoded by\n * interpreting each byte as a key code for entries marked to start with 0. See\n * description of encodePayloadAsBinary\n *\n * @param {ArrayBuffer} data, callback method\n * @api public\n */\n\nexports.decodePayloadAsBinary = function (data, binaryType, callback) {\n  if (typeof binaryType === 'function') {\n    callback = binaryType;\n    binaryType = null;\n  }\n\n  var bufferTail = data;\n  var buffers = [];\n\n  var numberTooLong = false;\n  while (bufferTail.byteLength > 0) {\n    var tailArray = new Uint8Array(bufferTail);\n    var isString = tailArray[0] === 0;\n    var msgLength = '';\n\n    for (var i = 1; ; i++) {\n      if (tailArray[i] == 255) break;\n\n      if (msgLength.length > 310) {\n        numberTooLong = true;\n        break;\n      }\n\n      msgLength += tailArray[i];\n    }\n\n    if(numberTooLong) return callback(err, 0, 1);\n\n    bufferTail = sliceBuffer(bufferTail, 2 + msgLength.length);\n    msgLength = parseInt(msgLength);\n\n    var msg = sliceBuffer(bufferTail, 0, msgLength);\n    if (isString) {\n      try {\n        msg = String.fromCharCode.apply(null, new Uint8Array(msg));\n      } catch (e) {\n        // iPhone Safari doesn't let you apply to typed arrays\n        var typed = new Uint8Array(msg);\n        msg = '';\n        for (var i = 0; i < typed.length; i++) {\n          msg += String.fromCharCode(typed[i]);\n        }\n      }\n    }\n\n    buffers.push(msg);\n    bufferTail = sliceBuffer(bufferTail, msgLength);\n  }\n\n  var total = buffers.length;\n  buffers.forEach(function(buffer, i) {\n    callback(exports.decodePacket(buffer, binaryType, true), i, total);\n  });\n};\n","\n/**\n * Gets the keys for an object.\n *\n * @return {Array} keys\n * @api private\n */\n\nmodule.exports = Object.keys || function keys (obj){\n  var arr = [];\n  var has = Object.prototype.hasOwnProperty;\n\n  for (var i in obj) {\n    if (has.call(obj, i)) {\n      arr.push(i);\n    }\n  }\n  return arr;\n};\n","\n/*\n * Module requirements.\n */\n\nvar isArray = require('isarray');\n\n/**\n * Module exports.\n */\n\nmodule.exports = hasBinary;\n\n/**\n * Checks for binary data.\n *\n * Right now only Buffer and ArrayBuffer are supported..\n *\n * @param {Object} anything\n * @api public\n */\n\nfunction hasBinary(data) {\n\n  function _hasBinary(obj) {\n    if (!obj) return false;\n\n    if ( (global.Buffer && global.Buffer.isBuffer(obj)) ||\n         (global.ArrayBuffer && obj instanceof ArrayBuffer) ||\n         (global.Blob && obj instanceof Blob) ||\n         (global.File && obj instanceof File)\n        ) {\n      return true;\n    }\n\n    if (isArray(obj)) {\n      for (var i = 0; i < obj.length; i++) {\n          if (_hasBinary(obj[i])) {\n              return true;\n          }\n      }\n    } else if (obj && 'object' == typeof obj) {\n      if (obj.toJSON) {\n        obj = obj.toJSON();\n      }\n\n      for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {\n          return true;\n        }\n      }\n    }\n\n    return false;\n  }\n\n  return _hasBinary(data);\n}\n","module.exports = Array.isArray || function (arr) {\n  return Object.prototype.toString.call(arr) == '[object Array]';\n};\n","\n/*\n * Module requirements.\n */\n\nvar isArray = require('isarray');\n\n/**\n * Module exports.\n */\n\nmodule.exports = hasBinary;\n\n/**\n * Checks for binary data.\n *\n * Right now only Buffer and ArrayBuffer are supported..\n *\n * @param {Object} anything\n * @api public\n */\n\nfunction hasBinary(data) {\n\n  function _hasBinary(obj) {\n    if (!obj) return false;\n\n    if ( (global.Buffer && global.Buffer.isBuffer && global.Buffer.isBuffer(obj)) ||\n         (global.ArrayBuffer && obj instanceof ArrayBuffer) ||\n         (global.Blob && obj instanceof Blob) ||\n         (global.File && obj instanceof File)\n        ) {\n      return true;\n    }\n\n    if (isArray(obj)) {\n      for (var i = 0; i < obj.length; i++) {\n          if (_hasBinary(obj[i])) {\n              return true;\n          }\n      }\n    } else if (obj && 'object' == typeof obj) {\n      // see: https://github.com/Automattic/has-binary/pull/4\n      if (obj.toJSON && 'function' == typeof obj.toJSON) {\n        obj = obj.toJSON();\n      }\n\n      for (var key in obj) {\n        if (Object.prototype.hasOwnProperty.call(obj, key) && _hasBinary(obj[key])) {\n          return true;\n        }\n      }\n    }\n\n    return false;\n  }\n\n  return _hasBinary(data);\n}\n","\n/**\n * Module exports.\n *\n * Logic borrowed from Modernizr:\n *\n *   - https://github.com/Modernizr/Modernizr/blob/master/feature-detects/cors.js\n */\n\ntry {\n  module.exports = typeof XMLHttpRequest !== 'undefined' &&\n    'withCredentials' in new XMLHttpRequest();\n} catch (err) {\n  // if XMLHttp support is disabled in IE then it will throw\n  // when trying to create\n  module.exports = false;\n}\n","\nvar indexOf = [].indexOf;\n\nmodule.exports = function(arr, obj){\n  if (indexOf) return arr.indexOf(obj);\n  for (var i = 0; i < arr.length; ++i) {\n    if (arr[i] === obj) return i;\n  }\n  return -1;\n};","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n *  - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} options\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function(val, options){\n  options = options || {};\n  if ('string' == typeof val) return parse(val);\n  return options.long\n    ? long(val)\n    : short(val);\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n  str = '' + str;\n  if (str.length > 10000) return;\n  var match = /^((?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|years?|yrs?|y)?$/i.exec(str);\n  if (!match) return;\n  var n = parseFloat(match[1]);\n  var type = (match[2] || 'ms').toLowerCase();\n  switch (type) {\n    case 'years':\n    case 'year':\n    case 'yrs':\n    case 'yr':\n    case 'y':\n      return n * y;\n    case 'days':\n    case 'day':\n    case 'd':\n      return n * d;\n    case 'hours':\n    case 'hour':\n    case 'hrs':\n    case 'hr':\n    case 'h':\n      return n * h;\n    case 'minutes':\n    case 'minute':\n    case 'mins':\n    case 'min':\n    case 'm':\n      return n * m;\n    case 'seconds':\n    case 'second':\n    case 'secs':\n    case 'sec':\n    case 's':\n      return n * s;\n    case 'milliseconds':\n    case 'millisecond':\n    case 'msecs':\n    case 'msec':\n    case 'ms':\n      return n;\n  }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction short(ms) {\n  if (ms >= d) return Math.round(ms / d) + 'd';\n  if (ms >= h) return Math.round(ms / h) + 'h';\n  if (ms >= m) return Math.round(ms / m) + 'm';\n  if (ms >= s) return Math.round(ms / s) + 's';\n  return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction long(ms) {\n  return plural(ms, d, 'day')\n    || plural(ms, h, 'hour')\n    || plural(ms, m, 'minute')\n    || plural(ms, s, 'second')\n    || ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, n, name) {\n  if (ms < n) return;\n  if (ms < n * 1.5) return Math.floor(ms / n) + ' ' + name;\n  return Math.ceil(ms / n) + ' ' + name + 's';\n}\n","/**\n * JSON parse.\n *\n * @see Based on jQuery#parseJSON (MIT) and JSON2\n * @api private\n */\n\nvar rvalidchars = /^[\\],:{}\\s]*$/;\nvar rvalidescape = /\\\\(?:[\"\\\\\\/bfnrt]|u[0-9a-fA-F]{4})/g;\nvar rvalidtokens = /\"[^\"\\\\\\n\\r]*\"|true|false|null|-?\\d+(?:\\.\\d*)?(?:[eE][+\\-]?\\d+)?/g;\nvar rvalidbraces = /(?:^|:|,)(?:\\s*\\[)+/g;\nvar rtrimLeft = /^\\s+/;\nvar rtrimRight = /\\s+$/;\n\nmodule.exports = function parsejson(data) {\n  if ('string' != typeof data || !data) {\n    return null;\n  }\n\n  data = data.replace(rtrimLeft, '').replace(rtrimRight, '');\n\n  // Attempt to parse using the native JSON parser first\n  if (global.JSON && JSON.parse) {\n    return JSON.parse(data);\n  }\n\n  if (rvalidchars.test(data.replace(rvalidescape, '@')\n      .replace(rvalidtokens, ']')\n      .replace(rvalidbraces, ''))) {\n    return (new Function('return ' + data))();\n  }\n};","/**\n * Compiles a querystring\n * Returns string representation of the object\n *\n * @param {Object}\n * @api private\n */\n\nexports.encode = function (obj) {\n  var str = '';\n\n  for (var i in obj) {\n    if (obj.hasOwnProperty(i)) {\n      if (str.length) str += '&';\n      str += encodeURIComponent(i) + '=' + encodeURIComponent(obj[i]);\n    }\n  }\n\n  return str;\n};\n\n/**\n * Parses a simple querystring into an object\n *\n * @param {String} qs\n * @api private\n */\n\nexports.decode = function(qs){\n  var qry = {};\n  var pairs = qs.split('&');\n  for (var i = 0, l = pairs.length; i < l; i++) {\n    var pair = pairs[i].split('=');\n    qry[decodeURIComponent(pair[0])] = decodeURIComponent(pair[1]);\n  }\n  return qry;\n};\n","/**\n * Parses an URI\n *\n * @author Steven Levithan <stevenlevithan.com> (MIT license)\n * @api private\n */\n\nvar re = /^(?:(?![^:@]+:[^:@\\/]*@)(http|https|ws|wss):\\/\\/)?((?:(([^:@]*)(?::([^:@]*))?)?@)?((?:[a-f0-9]{0,4}:){2,7}[a-f0-9]{0,4}|[^:\\/?#]*)(?::(\\d*))?)(((\\/(?:[^?#](?![^?#\\/]*\\.[^?#\\/.]+(?:[?#]|$)))*\\/?)?([^?#\\/]*))(?:\\?([^#]*))?(?:#(.*))?)/;\n\nvar parts = [\n    'source', 'protocol', 'authority', 'userInfo', 'user', 'password', 'host', 'port', 'relative', 'path', 'directory', 'file', 'query', 'anchor'\n];\n\nmodule.exports = function parseuri(str) {\n    var src = str,\n        b = str.indexOf('['),\n        e = str.indexOf(']');\n\n    if (b != -1 && e != -1) {\n        str = str.substring(0, b) + str.substring(b, e).replace(/:/g, ';') + str.substring(e, str.length);\n    }\n\n    var m = re.exec(str || ''),\n        uri = {},\n        i = 14;\n\n    while (i--) {\n        uri[parts[i]] = m[i] || '';\n    }\n\n    if (b != -1 && e != -1) {\n        uri.source = src;\n        uri.host = uri.host.substring(1, uri.host.length - 1).replace(/;/g, ':');\n        uri.authority = uri.authority.replace('[', '').replace(']', '').replace(/;/g, ':');\n        uri.ipv6uri = true;\n    }\n\n    return uri;\n};\n","\n/**\n * Module dependencies.\n */\n\nvar url = require('./url');\nvar parser = require('socket.io-parser');\nvar Manager = require('./manager');\nvar debug = require('debug')('socket.io-client');\n\n/**\n * Module exports.\n */\n\nmodule.exports = exports = lookup;\n\n/**\n * Managers cache.\n */\n\nvar cache = exports.managers = {};\n\n/**\n * Looks up an existing `Manager` for multiplexing.\n * If the user summons:\n *\n *   `io('http://localhost/a');`\n *   `io('http://localhost/b');`\n *\n * We reuse the existing instance based on same scheme/port/host,\n * and we initialize sockets for each namespace.\n *\n * @api public\n */\n\nfunction lookup(uri, opts) {\n  if (typeof uri == 'object') {\n    opts = uri;\n    uri = undefined;\n  }\n\n  opts = opts || {};\n\n  var parsed = url(uri);\n  var source = parsed.source;\n  var id = parsed.id;\n  var path = parsed.path;\n  var sameNamespace = cache[id] && path in cache[id].nsps;\n  var newConnection = opts.forceNew || opts['force new connection'] ||\n                      false === opts.multiplex || sameNamespace;\n\n  var io;\n\n  if (newConnection) {\n    debug('ignoring socket cache for %s', source);\n    io = Manager(source, opts);\n  } else {\n    if (!cache[id]) {\n      debug('new io instance for %s', source);\n      cache[id] = Manager(source, opts);\n    }\n    io = cache[id];\n  }\n\n  return io.socket(parsed.path);\n}\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nexports.protocol = parser.protocol;\n\n/**\n * `connect`.\n *\n * @param {String} uri\n * @api public\n */\n\nexports.connect = lookup;\n\n/**\n * Expose constructors for standalone build.\n *\n * @api public\n */\n\nexports.Manager = require('./manager');\nexports.Socket = require('./socket');\n","\n/**\n * Module dependencies.\n */\n\nvar eio = require('engine.io-client');\nvar Socket = require('./socket');\nvar Emitter = require('component-emitter');\nvar parser = require('socket.io-parser');\nvar on = require('./on');\nvar bind = require('component-bind');\nvar debug = require('debug')('socket.io-client:manager');\nvar indexOf = require('indexof');\nvar Backoff = require('backo2');\n\n/**\n * IE6+ hasOwnProperty\n */\n\nvar has = Object.prototype.hasOwnProperty;\n\n/**\n * Module exports\n */\n\nmodule.exports = Manager;\n\n/**\n * `Manager` constructor.\n *\n * @param {String} engine instance or engine uri/opts\n * @param {Object} options\n * @api public\n */\n\nfunction Manager(uri, opts){\n  if (!(this instanceof Manager)) return new Manager(uri, opts);\n  if (uri && ('object' == typeof uri)) {\n    opts = uri;\n    uri = undefined;\n  }\n  opts = opts || {};\n\n  opts.path = opts.path || '/socket.io';\n  this.nsps = {};\n  this.subs = [];\n  this.opts = opts;\n  this.reconnection(opts.reconnection !== false);\n  this.reconnectionAttempts(opts.reconnectionAttempts || Infinity);\n  this.reconnectionDelay(opts.reconnectionDelay || 1000);\n  this.reconnectionDelayMax(opts.reconnectionDelayMax || 5000);\n  this.randomizationFactor(opts.randomizationFactor || 0.5);\n  this.backoff = new Backoff({\n    min: this.reconnectionDelay(),\n    max: this.reconnectionDelayMax(),\n    jitter: this.randomizationFactor()\n  });\n  this.timeout(null == opts.timeout ? 20000 : opts.timeout);\n  this.readyState = 'closed';\n  this.uri = uri;\n  this.connecting = [];\n  this.lastPing = null;\n  this.encoding = false;\n  this.packetBuffer = [];\n  this.encoder = new parser.Encoder();\n  this.decoder = new parser.Decoder();\n  this.autoConnect = opts.autoConnect !== false;\n  if (this.autoConnect) this.open();\n}\n\n/**\n * Propagate given event to sockets and emit on `this`\n *\n * @api private\n */\n\nManager.prototype.emitAll = function() {\n  this.emit.apply(this, arguments);\n  for (var nsp in this.nsps) {\n    if (has.call(this.nsps, nsp)) {\n      this.nsps[nsp].emit.apply(this.nsps[nsp], arguments);\n    }\n  }\n};\n\n/**\n * Update `socket.id` of all sockets\n *\n * @api private\n */\n\nManager.prototype.updateSocketIds = function(){\n  for (var nsp in this.nsps) {\n    if (has.call(this.nsps, nsp)) {\n      this.nsps[nsp].id = this.engine.id;\n    }\n  }\n};\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Manager.prototype);\n\n/**\n * Sets the `reconnection` config.\n *\n * @param {Boolean} true/false if it should automatically reconnect\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnection = function(v){\n  if (!arguments.length) return this._reconnection;\n  this._reconnection = !!v;\n  return this;\n};\n\n/**\n * Sets the reconnection attempts config.\n *\n * @param {Number} max reconnection attempts before giving up\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnectionAttempts = function(v){\n  if (!arguments.length) return this._reconnectionAttempts;\n  this._reconnectionAttempts = v;\n  return this;\n};\n\n/**\n * Sets the delay between reconnections.\n *\n * @param {Number} delay\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnectionDelay = function(v){\n  if (!arguments.length) return this._reconnectionDelay;\n  this._reconnectionDelay = v;\n  this.backoff && this.backoff.setMin(v);\n  return this;\n};\n\nManager.prototype.randomizationFactor = function(v){\n  if (!arguments.length) return this._randomizationFactor;\n  this._randomizationFactor = v;\n  this.backoff && this.backoff.setJitter(v);\n  return this;\n};\n\n/**\n * Sets the maximum delay between reconnections.\n *\n * @param {Number} delay\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.reconnectionDelayMax = function(v){\n  if (!arguments.length) return this._reconnectionDelayMax;\n  this._reconnectionDelayMax = v;\n  this.backoff && this.backoff.setMax(v);\n  return this;\n};\n\n/**\n * Sets the connection timeout. `false` to disable\n *\n * @return {Manager} self or value\n * @api public\n */\n\nManager.prototype.timeout = function(v){\n  if (!arguments.length) return this._timeout;\n  this._timeout = v;\n  return this;\n};\n\n/**\n * Starts trying to reconnect if reconnection is enabled and we have not\n * started reconnecting yet\n *\n * @api private\n */\n\nManager.prototype.maybeReconnectOnOpen = function() {\n  // Only try to reconnect if it's the first time we're connecting\n  if (!this.reconnecting && this._reconnection && this.backoff.attempts === 0) {\n    // keeps reconnection from firing twice for the same reconnection loop\n    this.reconnect();\n  }\n};\n\n\n/**\n * Sets the current transport `socket`.\n *\n * @param {Function} optional, callback\n * @return {Manager} self\n * @api public\n */\n\nManager.prototype.open =\nManager.prototype.connect = function(fn){\n  debug('readyState %s', this.readyState);\n  if (~this.readyState.indexOf('open')) return this;\n\n  debug('opening %s', this.uri);\n  this.engine = eio(this.uri, this.opts);\n  var socket = this.engine;\n  var self = this;\n  this.readyState = 'opening';\n  this.skipReconnect = false;\n\n  // emit `open`\n  var openSub = on(socket, 'open', function() {\n    self.onopen();\n    fn && fn();\n  });\n\n  // emit `connect_error`\n  var errorSub = on(socket, 'error', function(data){\n    debug('connect_error');\n    self.cleanup();\n    self.readyState = 'closed';\n    self.emitAll('connect_error', data);\n    if (fn) {\n      var err = new Error('Connection error');\n      err.data = data;\n      fn(err);\n    } else {\n      // Only do this if there is no fn to handle the error\n      self.maybeReconnectOnOpen();\n    }\n  });\n\n  // emit `connect_timeout`\n  if (false !== this._timeout) {\n    var timeout = this._timeout;\n    debug('connect attempt will timeout after %d', timeout);\n\n    // set timer\n    var timer = setTimeout(function(){\n      debug('connect attempt timed out after %d', timeout);\n      openSub.destroy();\n      socket.close();\n      socket.emit('error', 'timeout');\n      self.emitAll('connect_timeout', timeout);\n    }, timeout);\n\n    this.subs.push({\n      destroy: function(){\n        clearTimeout(timer);\n      }\n    });\n  }\n\n  this.subs.push(openSub);\n  this.subs.push(errorSub);\n\n  return this;\n};\n\n/**\n * Called upon transport open.\n *\n * @api private\n */\n\nManager.prototype.onopen = function(){\n  debug('open');\n\n  // clear old subs\n  this.cleanup();\n\n  // mark as open\n  this.readyState = 'open';\n  this.emit('open');\n\n  // add new subs\n  var socket = this.engine;\n  this.subs.push(on(socket, 'data', bind(this, 'ondata')));\n  this.subs.push(on(socket, 'ping', bind(this, 'onping')));\n  this.subs.push(on(socket, 'pong', bind(this, 'onpong')));\n  this.subs.push(on(socket, 'error', bind(this, 'onerror')));\n  this.subs.push(on(socket, 'close', bind(this, 'onclose')));\n  this.subs.push(on(this.decoder, 'decoded', bind(this, 'ondecoded')));\n};\n\n/**\n * Called upon a ping.\n *\n * @api private\n */\n\nManager.prototype.onping = function(){\n  this.lastPing = new Date;\n  this.emitAll('ping');\n};\n\n/**\n * Called upon a packet.\n *\n * @api private\n */\n\nManager.prototype.onpong = function(){\n  this.emitAll('pong', new Date - this.lastPing);\n};\n\n/**\n * Called with data.\n *\n * @api private\n */\n\nManager.prototype.ondata = function(data){\n  this.decoder.add(data);\n};\n\n/**\n * Called when parser fully decodes a packet.\n *\n * @api private\n */\n\nManager.prototype.ondecoded = function(packet) {\n  this.emit('packet', packet);\n};\n\n/**\n * Called upon socket error.\n *\n * @api private\n */\n\nManager.prototype.onerror = function(err){\n  debug('error', err);\n  this.emitAll('error', err);\n};\n\n/**\n * Creates a new socket for the given `nsp`.\n *\n * @return {Socket}\n * @api public\n */\n\nManager.prototype.socket = function(nsp){\n  var socket = this.nsps[nsp];\n  if (!socket) {\n    socket = new Socket(this, nsp);\n    this.nsps[nsp] = socket;\n    var self = this;\n    socket.on('connecting', onConnecting);\n    socket.on('connect', function(){\n      socket.id = self.engine.id;\n    });\n\n    if (this.autoConnect) {\n      // manually call here since connecting evnet is fired before listening\n      onConnecting();\n    }\n  }\n\n  function onConnecting() {\n    if (!~indexOf(self.connecting, socket)) {\n      self.connecting.push(socket);\n    }\n  }\n\n  return socket;\n};\n\n/**\n * Called upon a socket close.\n *\n * @param {Socket} socket\n */\n\nManager.prototype.destroy = function(socket){\n  var index = indexOf(this.connecting, socket);\n  if (~index) this.connecting.splice(index, 1);\n  if (this.connecting.length) return;\n\n  this.close();\n};\n\n/**\n * Writes a packet.\n *\n * @param {Object} packet\n * @api private\n */\n\nManager.prototype.packet = function(packet){\n  debug('writing packet %j', packet);\n  var self = this;\n\n  if (!self.encoding) {\n    // encode, then write to engine with result\n    self.encoding = true;\n    this.encoder.encode(packet, function(encodedPackets) {\n      for (var i = 0; i < encodedPackets.length; i++) {\n        self.engine.write(encodedPackets[i], packet.options);\n      }\n      self.encoding = false;\n      self.processPacketQueue();\n    });\n  } else { // add packet to the queue\n    self.packetBuffer.push(packet);\n  }\n};\n\n/**\n * If packet buffer is non-empty, begins encoding the\n * next packet in line.\n *\n * @api private\n */\n\nManager.prototype.processPacketQueue = function() {\n  if (this.packetBuffer.length > 0 && !this.encoding) {\n    var pack = this.packetBuffer.shift();\n    this.packet(pack);\n  }\n};\n\n/**\n * Clean up transport subscriptions and packet buffer.\n *\n * @api private\n */\n\nManager.prototype.cleanup = function(){\n  debug('cleanup');\n\n  var sub;\n  while (sub = this.subs.shift()) sub.destroy();\n\n  this.packetBuffer = [];\n  this.encoding = false;\n  this.lastPing = null;\n\n  this.decoder.destroy();\n};\n\n/**\n * Close the current socket.\n *\n * @api private\n */\n\nManager.prototype.close =\nManager.prototype.disconnect = function(){\n  debug('disconnect');\n  this.skipReconnect = true;\n  this.reconnecting = false;\n  if ('opening' == this.readyState) {\n    // `onclose` will not fire because\n    // an open event never happened\n    this.cleanup();\n  }\n  this.backoff.reset();\n  this.readyState = 'closed';\n  if (this.engine) this.engine.close();\n};\n\n/**\n * Called upon engine close.\n *\n * @api private\n */\n\nManager.prototype.onclose = function(reason){\n  debug('onclose');\n\n  this.cleanup();\n  this.backoff.reset();\n  this.readyState = 'closed';\n  this.emit('close', reason);\n\n  if (this._reconnection && !this.skipReconnect) {\n    this.reconnect();\n  }\n};\n\n/**\n * Attempt a reconnection.\n *\n * @api private\n */\n\nManager.prototype.reconnect = function(){\n  if (this.reconnecting || this.skipReconnect) return this;\n\n  var self = this;\n\n  if (this.backoff.attempts >= this._reconnectionAttempts) {\n    debug('reconnect failed');\n    this.backoff.reset();\n    this.emitAll('reconnect_failed');\n    this.reconnecting = false;\n  } else {\n    var delay = this.backoff.duration();\n    debug('will wait %dms before reconnect attempt', delay);\n\n    this.reconnecting = true;\n    var timer = setTimeout(function(){\n      if (self.skipReconnect) return;\n\n      debug('attempting reconnect');\n      self.emitAll('reconnect_attempt', self.backoff.attempts);\n      self.emitAll('reconnecting', self.backoff.attempts);\n\n      // check again for the case socket closed in above events\n      if (self.skipReconnect) return;\n\n      self.open(function(err){\n        if (err) {\n          debug('reconnect attempt error');\n          self.reconnecting = false;\n          self.reconnect();\n          self.emitAll('reconnect_error', err.data);\n        } else {\n          debug('reconnect success');\n          self.onreconnect();\n        }\n      });\n    }, delay);\n\n    this.subs.push({\n      destroy: function(){\n        clearTimeout(timer);\n      }\n    });\n  }\n};\n\n/**\n * Called upon successful reconnect.\n *\n * @api private\n */\n\nManager.prototype.onreconnect = function(){\n  var attempt = this.backoff.attempts;\n  this.reconnecting = false;\n  this.backoff.reset();\n  this.updateSocketIds();\n  this.emitAll('reconnect', attempt);\n};\n","\n/**\n * Module exports.\n */\n\nmodule.exports = on;\n\n/**\n * Helper for subscriptions.\n *\n * @param {Object|EventEmitter} obj with `Emitter` mixin or `EventEmitter`\n * @param {String} event name\n * @param {Function} callback\n * @api public\n */\n\nfunction on(obj, ev, fn) {\n  obj.on(ev, fn);\n  return {\n    destroy: function(){\n      obj.removeListener(ev, fn);\n    }\n  };\n}\n","\n/**\n * Module dependencies.\n */\n\nvar parser = require('socket.io-parser');\nvar Emitter = require('component-emitter');\nvar toArray = require('to-array');\nvar on = require('./on');\nvar bind = require('component-bind');\nvar debug = require('debug')('socket.io-client:socket');\nvar hasBin = require('has-binary');\n\n/**\n * Module exports.\n */\n\nmodule.exports = exports = Socket;\n\n/**\n * Internal events (blacklisted).\n * These events can't be emitted by the user.\n *\n * @api private\n */\n\nvar events = {\n  connect: 1,\n  connect_error: 1,\n  connect_timeout: 1,\n  connecting: 1,\n  disconnect: 1,\n  error: 1,\n  reconnect: 1,\n  reconnect_attempt: 1,\n  reconnect_failed: 1,\n  reconnect_error: 1,\n  reconnecting: 1,\n  ping: 1,\n  pong: 1\n};\n\n/**\n * Shortcut to `Emitter#emit`.\n */\n\nvar emit = Emitter.prototype.emit;\n\n/**\n * `Socket` constructor.\n *\n * @api public\n */\n\nfunction Socket(io, nsp){\n  this.io = io;\n  this.nsp = nsp;\n  this.json = this; // compat\n  this.ids = 0;\n  this.acks = {};\n  this.receiveBuffer = [];\n  this.sendBuffer = [];\n  this.connected = false;\n  this.disconnected = true;\n  if (this.io.autoConnect) this.open();\n}\n\n/**\n * Mix in `Emitter`.\n */\n\nEmitter(Socket.prototype);\n\n/**\n * Subscribe to open, close and packet events\n *\n * @api private\n */\n\nSocket.prototype.subEvents = function() {\n  if (this.subs) return;\n\n  var io = this.io;\n  this.subs = [\n    on(io, 'open', bind(this, 'onopen')),\n    on(io, 'packet', bind(this, 'onpacket')),\n    on(io, 'close', bind(this, 'onclose'))\n  ];\n};\n\n/**\n * \"Opens\" the socket.\n *\n * @api public\n */\n\nSocket.prototype.open =\nSocket.prototype.connect = function(){\n  if (this.connected) return this;\n\n  this.subEvents();\n  this.io.open(); // ensure open\n  if ('open' == this.io.readyState) this.onopen();\n  this.emit('connecting');\n  return this;\n};\n\n/**\n * Sends a `message` event.\n *\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.send = function(){\n  var args = toArray(arguments);\n  args.unshift('message');\n  this.emit.apply(this, args);\n  return this;\n};\n\n/**\n * Override `emit`.\n * If the event is in `events`, it's emitted normally.\n *\n * @param {String} event name\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.emit = function(ev){\n  if (events.hasOwnProperty(ev)) {\n    emit.apply(this, arguments);\n    return this;\n  }\n\n  var args = toArray(arguments);\n  var parserType = parser.EVENT; // default\n  if (hasBin(args)) { parserType = parser.BINARY_EVENT; } // binary\n  var packet = { type: parserType, data: args };\n\n  packet.options = {};\n  packet.options.compress = !this.flags || false !== this.flags.compress;\n\n  // event ack callback\n  if ('function' == typeof args[args.length - 1]) {\n    debug('emitting packet with ack id %d', this.ids);\n    this.acks[this.ids] = args.pop();\n    packet.id = this.ids++;\n  }\n\n  if (this.connected) {\n    this.packet(packet);\n  } else {\n    this.sendBuffer.push(packet);\n  }\n\n  delete this.flags;\n\n  return this;\n};\n\n/**\n * Sends a packet.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.packet = function(packet){\n  packet.nsp = this.nsp;\n  this.io.packet(packet);\n};\n\n/**\n * Called upon engine `open`.\n *\n * @api private\n */\n\nSocket.prototype.onopen = function(){\n  debug('transport is open - connecting');\n\n  // write connect packet if necessary\n  if ('/' != this.nsp) {\n    this.packet({ type: parser.CONNECT });\n  }\n};\n\n/**\n * Called upon engine `close`.\n *\n * @param {String} reason\n * @api private\n */\n\nSocket.prototype.onclose = function(reason){\n  debug('close (%s)', reason);\n  this.connected = false;\n  this.disconnected = true;\n  delete this.id;\n  this.emit('disconnect', reason);\n};\n\n/**\n * Called with socket packet.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.onpacket = function(packet){\n  if (packet.nsp != this.nsp) return;\n\n  switch (packet.type) {\n    case parser.CONNECT:\n      this.onconnect();\n      break;\n\n    case parser.EVENT:\n      this.onevent(packet);\n      break;\n\n    case parser.BINARY_EVENT:\n      this.onevent(packet);\n      break;\n\n    case parser.ACK:\n      this.onack(packet);\n      break;\n\n    case parser.BINARY_ACK:\n      this.onack(packet);\n      break;\n\n    case parser.DISCONNECT:\n      this.ondisconnect();\n      break;\n\n    case parser.ERROR:\n      this.emit('error', packet.data);\n      break;\n  }\n};\n\n/**\n * Called upon a server event.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.onevent = function(packet){\n  var args = packet.data || [];\n  debug('emitting event %j', args);\n\n  if (null != packet.id) {\n    debug('attaching ack callback to event');\n    args.push(this.ack(packet.id));\n  }\n\n  if (this.connected) {\n    emit.apply(this, args);\n  } else {\n    this.receiveBuffer.push(args);\n  }\n};\n\n/**\n * Produces an ack callback to emit with an event.\n *\n * @api private\n */\n\nSocket.prototype.ack = function(id){\n  var self = this;\n  var sent = false;\n  return function(){\n    // prevent double callbacks\n    if (sent) return;\n    sent = true;\n    var args = toArray(arguments);\n    debug('sending ack %j', args);\n\n    var type = hasBin(args) ? parser.BINARY_ACK : parser.ACK;\n    self.packet({\n      type: type,\n      id: id,\n      data: args\n    });\n  };\n};\n\n/**\n * Called upon a server acknowlegement.\n *\n * @param {Object} packet\n * @api private\n */\n\nSocket.prototype.onack = function(packet){\n  var ack = this.acks[packet.id];\n  if ('function' == typeof ack) {\n    debug('calling ack %s with %j', packet.id, packet.data);\n    ack.apply(this, packet.data);\n    delete this.acks[packet.id];\n  } else {\n    debug('bad ack %s', packet.id);\n  }\n};\n\n/**\n * Called upon server connect.\n *\n * @api private\n */\n\nSocket.prototype.onconnect = function(){\n  this.connected = true;\n  this.disconnected = false;\n  this.emit('connect');\n  this.emitBuffered();\n};\n\n/**\n * Emit buffered events (received and emitted).\n *\n * @api private\n */\n\nSocket.prototype.emitBuffered = function(){\n  var i;\n  for (i = 0; i < this.receiveBuffer.length; i++) {\n    emit.apply(this, this.receiveBuffer[i]);\n  }\n  this.receiveBuffer = [];\n\n  for (i = 0; i < this.sendBuffer.length; i++) {\n    this.packet(this.sendBuffer[i]);\n  }\n  this.sendBuffer = [];\n};\n\n/**\n * Called upon server disconnect.\n *\n * @api private\n */\n\nSocket.prototype.ondisconnect = function(){\n  debug('server disconnect (%s)', this.nsp);\n  this.destroy();\n  this.onclose('io server disconnect');\n};\n\n/**\n * Called upon forced client/server side disconnections,\n * this method ensures the manager stops tracking us and\n * that reconnections don't get triggered for this.\n *\n * @api private.\n */\n\nSocket.prototype.destroy = function(){\n  if (this.subs) {\n    // clean subscriptions to avoid reconnections\n    for (var i = 0; i < this.subs.length; i++) {\n      this.subs[i].destroy();\n    }\n    this.subs = null;\n  }\n\n  this.io.destroy(this);\n};\n\n/**\n * Disconnects the socket manually.\n *\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.close =\nSocket.prototype.disconnect = function(){\n  if (this.connected) {\n    debug('performing disconnect (%s)', this.nsp);\n    this.packet({ type: parser.DISCONNECT });\n  }\n\n  // remove socket from pool\n  this.destroy();\n\n  if (this.connected) {\n    // fire events\n    this.onclose('io client disconnect');\n  }\n  return this;\n};\n\n/**\n * Sets the compress flag.\n *\n * @param {Boolean} if `true`, compresses the sending data\n * @return {Socket} self\n * @api public\n */\n\nSocket.prototype.compress = function(compress){\n  this.flags = this.flags || {};\n  this.flags.compress = compress;\n  return this;\n};\n","\n/**\n * Module dependencies.\n */\n\nvar parseuri = require('parseuri');\nvar debug = require('debug')('socket.io-client:url');\n\n/**\n * Module exports.\n */\n\nmodule.exports = url;\n\n/**\n * URL parser.\n *\n * @param {String} url\n * @param {Object} An object meant to mimic window.location.\n *                 Defaults to window.location.\n * @api public\n */\n\nfunction url(uri, loc){\n  var obj = uri;\n\n  // default to window.location\n  var loc = loc || global.location;\n  if (null == uri) uri = loc.protocol + '//' + loc.host;\n\n  // relative path support\n  if ('string' == typeof uri) {\n    if ('/' == uri.charAt(0)) {\n      if ('/' == uri.charAt(1)) {\n        uri = loc.protocol + uri;\n      } else {\n        uri = loc.host + uri;\n      }\n    }\n\n    if (!/^(https?|wss?):\\/\\//.test(uri)) {\n      debug('protocol-less url %s', uri);\n      if ('undefined' != typeof loc) {\n        uri = loc.protocol + '//' + uri;\n      } else {\n        uri = 'https://' + uri;\n      }\n    }\n\n    // parse\n    debug('parse %s', uri);\n    obj = parseuri(uri);\n  }\n\n  // make sure we treat `localhost:80` and `localhost` equally\n  if (!obj.port) {\n    if (/^(http|ws)$/.test(obj.protocol)) {\n      obj.port = '80';\n    }\n    else if (/^(http|ws)s$/.test(obj.protocol)) {\n      obj.port = '443';\n    }\n  }\n\n  obj.path = obj.path || '/';\n\n  var ipv6 = obj.host.indexOf(':') !== -1;\n  var host = ipv6 ? '[' + obj.host + ']' : obj.host;\n\n  // define unique id\n  obj.id = obj.protocol + '://' + host + ':' + obj.port;\n  // define href\n  obj.href = obj.protocol + '://' + host + (loc && loc.port == obj.port ? '' : (':' + obj.port));\n\n  return obj;\n}\n","\n/**\n * Expose `Emitter`.\n */\n\nmodule.exports = Emitter;\n\n/**\n * Initialize a new `Emitter`.\n *\n * @api public\n */\n\nfunction Emitter(obj) {\n  if (obj) return mixin(obj);\n};\n\n/**\n * Mixin the emitter properties.\n *\n * @param {Object} obj\n * @return {Object}\n * @api private\n */\n\nfunction mixin(obj) {\n  for (var key in Emitter.prototype) {\n    obj[key] = Emitter.prototype[key];\n  }\n  return obj;\n}\n\n/**\n * Listen on the given `event` with `fn`.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.on =\nEmitter.prototype.addEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n  (this._callbacks['$' + event] = this._callbacks['$' + event] || [])\n    .push(fn);\n  return this;\n};\n\n/**\n * Adds an `event` listener that will be invoked a single\n * time then automatically removed.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.once = function(event, fn){\n  function on() {\n    this.off(event, on);\n    fn.apply(this, arguments);\n  }\n\n  on.fn = fn;\n  this.on(event, on);\n  return this;\n};\n\n/**\n * Remove the given callback for `event` or all\n * registered callbacks.\n *\n * @param {String} event\n * @param {Function} fn\n * @return {Emitter}\n * @api public\n */\n\nEmitter.prototype.off =\nEmitter.prototype.removeListener =\nEmitter.prototype.removeAllListeners =\nEmitter.prototype.removeEventListener = function(event, fn){\n  this._callbacks = this._callbacks || {};\n\n  // all\n  if (0 == arguments.length) {\n    this._callbacks = {};\n    return this;\n  }\n\n  // specific event\n  var callbacks = this._callbacks['$' + event];\n  if (!callbacks) return this;\n\n  // remove all handlers\n  if (1 == arguments.length) {\n    delete this._callbacks['$' + event];\n    return this;\n  }\n\n  // remove specific handler\n  var cb;\n  for (var i = 0; i < callbacks.length; i++) {\n    cb = callbacks[i];\n    if (cb === fn || cb.fn === fn) {\n      callbacks.splice(i, 1);\n      break;\n    }\n  }\n  return this;\n};\n\n/**\n * Emit `event` with the given args.\n *\n * @param {String} event\n * @param {Mixed} ...\n * @return {Emitter}\n */\n\nEmitter.prototype.emit = function(event){\n  this._callbacks = this._callbacks || {};\n  var args = [].slice.call(arguments, 1)\n    , callbacks = this._callbacks['$' + event];\n\n  if (callbacks) {\n    callbacks = callbacks.slice(0);\n    for (var i = 0, len = callbacks.length; i < len; ++i) {\n      callbacks[i].apply(this, args);\n    }\n  }\n\n  return this;\n};\n\n/**\n * Return array of callbacks for `event`.\n *\n * @param {String} event\n * @return {Array}\n * @api public\n */\n\nEmitter.prototype.listeners = function(event){\n  this._callbacks = this._callbacks || {};\n  return this._callbacks['$' + event] || [];\n};\n\n/**\n * Check if this emitter has `event` handlers.\n *\n * @param {String} event\n * @return {Boolean}\n * @api public\n */\n\nEmitter.prototype.hasListeners = function(event){\n  return !! this.listeners(event).length;\n};\n","/*global Blob,File*/\n\n/**\n * Module requirements\n */\n\nvar isArray = require('isarray');\nvar isBuf = require('./is-buffer');\n\n/**\n * Replaces every Buffer | ArrayBuffer in packet with a numbered placeholder.\n * Anything with blobs or files should be fed through removeBlobs before coming\n * here.\n *\n * @param {Object} packet - socket.io event packet\n * @return {Object} with deconstructed packet and list of buffers\n * @api public\n */\n\nexports.deconstructPacket = function(packet){\n  var buffers = [];\n  var packetData = packet.data;\n\n  function _deconstructPacket(data) {\n    if (!data) return data;\n\n    if (isBuf(data)) {\n      var placeholder = { _placeholder: true, num: buffers.length };\n      buffers.push(data);\n      return placeholder;\n    } else if (isArray(data)) {\n      var newData = new Array(data.length);\n      for (var i = 0; i < data.length; i++) {\n        newData[i] = _deconstructPacket(data[i]);\n      }\n      return newData;\n    } else if ('object' == typeof data && !(data instanceof Date)) {\n      var newData = {};\n      for (var key in data) {\n        newData[key] = _deconstructPacket(data[key]);\n      }\n      return newData;\n    }\n    return data;\n  }\n\n  var pack = packet;\n  pack.data = _deconstructPacket(packetData);\n  pack.attachments = buffers.length; // number of binary 'attachments'\n  return {packet: pack, buffers: buffers};\n};\n\n/**\n * Reconstructs a binary packet from its placeholder packet and buffers\n *\n * @param {Object} packet - event packet with placeholders\n * @param {Array} buffers - binary buffers to put in placeholder positions\n * @return {Object} reconstructed packet\n * @api public\n */\n\nexports.reconstructPacket = function(packet, buffers) {\n  var curPlaceHolder = 0;\n\n  function _reconstructPacket(data) {\n    if (data && data._placeholder) {\n      var buf = buffers[data.num]; // appropriate buffer (should be natural order anyway)\n      return buf;\n    } else if (isArray(data)) {\n      for (var i = 0; i < data.length; i++) {\n        data[i] = _reconstructPacket(data[i]);\n      }\n      return data;\n    } else if (data && 'object' == typeof data) {\n      for (var key in data) {\n        data[key] = _reconstructPacket(data[key]);\n      }\n      return data;\n    }\n    return data;\n  }\n\n  packet.data = _reconstructPacket(packet.data);\n  packet.attachments = undefined; // no longer useful\n  return packet;\n};\n\n/**\n * Asynchronously removes Blobs or Files from data via\n * FileReader's readAsArrayBuffer method. Used before encoding\n * data as msgpack. Calls callback with the blobless data.\n *\n * @param {Object} data\n * @param {Function} callback\n * @api private\n */\n\nexports.removeBlobs = function(data, callback) {\n  function _removeBlobs(obj, curKey, containingObject) {\n    if (!obj) return obj;\n\n    // convert any blob\n    if ((global.Blob && obj instanceof Blob) ||\n        (global.File && obj instanceof File)) {\n      pendingBlobs++;\n\n      // async filereader\n      var fileReader = new FileReader();\n      fileReader.onload = function() { // this.result == arraybuffer\n        if (containingObject) {\n          containingObject[curKey] = this.result;\n        }\n        else {\n          bloblessData = this.result;\n        }\n\n        // if nothing pending its callback time\n        if(! --pendingBlobs) {\n          callback(bloblessData);\n        }\n      };\n\n      fileReader.readAsArrayBuffer(obj); // blob -> arraybuffer\n    } else if (isArray(obj)) { // handle array\n      for (var i = 0; i < obj.length; i++) {\n        _removeBlobs(obj[i], i, obj);\n      }\n    } else if (obj && 'object' == typeof obj && !isBuf(obj)) { // and object\n      for (var key in obj) {\n        _removeBlobs(obj[key], key, obj);\n      }\n    }\n  }\n\n  var pendingBlobs = 0;\n  var bloblessData = data;\n  _removeBlobs(bloblessData);\n  if (!pendingBlobs) {\n    callback(bloblessData);\n  }\n};\n","\n/**\n * Module dependencies.\n */\n\nvar debug = require('debug')('socket.io-parser');\nvar json = require('json3');\nvar isArray = require('isarray');\nvar Emitter = require('component-emitter');\nvar binary = require('./binary');\nvar isBuf = require('./is-buffer');\n\n/**\n * Protocol version.\n *\n * @api public\n */\n\nexports.protocol = 4;\n\n/**\n * Packet types.\n *\n * @api public\n */\n\nexports.types = [\n  'CONNECT',\n  'DISCONNECT',\n  'EVENT',\n  'ACK',\n  'ERROR',\n  'BINARY_EVENT',\n  'BINARY_ACK'\n];\n\n/**\n * Packet type `connect`.\n *\n * @api public\n */\n\nexports.CONNECT = 0;\n\n/**\n * Packet type `disconnect`.\n *\n * @api public\n */\n\nexports.DISCONNECT = 1;\n\n/**\n * Packet type `event`.\n *\n * @api public\n */\n\nexports.EVENT = 2;\n\n/**\n * Packet type `ack`.\n *\n * @api public\n */\n\nexports.ACK = 3;\n\n/**\n * Packet type `error`.\n *\n * @api public\n */\n\nexports.ERROR = 4;\n\n/**\n * Packet type 'binary event'\n *\n * @api public\n */\n\nexports.BINARY_EVENT = 5;\n\n/**\n * Packet type `binary ack`. For acks with binary arguments.\n *\n * @api public\n */\n\nexports.BINARY_ACK = 6;\n\n/**\n * Encoder constructor.\n *\n * @api public\n */\n\nexports.Encoder = Encoder;\n\n/**\n * Decoder constructor.\n *\n * @api public\n */\n\nexports.Decoder = Decoder;\n\n/**\n * A socket.io Encoder instance\n *\n * @api public\n */\n\nfunction Encoder() {}\n\n/**\n * Encode a packet as a single string if non-binary, or as a\n * buffer sequence, depending on packet type.\n *\n * @param {Object} obj - packet object\n * @param {Function} callback - function to handle encodings (likely engine.write)\n * @return Calls callback with Array of encodings\n * @api public\n */\n\nEncoder.prototype.encode = function(obj, callback){\n  debug('encoding packet %j', obj);\n\n  if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {\n    encodeAsBinary(obj, callback);\n  }\n  else {\n    var encoding = encodeAsString(obj);\n    callback([encoding]);\n  }\n};\n\n/**\n * Encode packet as string.\n *\n * @param {Object} packet\n * @return {String} encoded\n * @api private\n */\n\nfunction encodeAsString(obj) {\n  var str = '';\n  var nsp = false;\n\n  // first is type\n  str += obj.type;\n\n  // attachments if we have them\n  if (exports.BINARY_EVENT == obj.type || exports.BINARY_ACK == obj.type) {\n    str += obj.attachments;\n    str += '-';\n  }\n\n  // if we have a namespace other than `/`\n  // we append it followed by a comma `,`\n  if (obj.nsp && '/' != obj.nsp) {\n    nsp = true;\n    str += obj.nsp;\n  }\n\n  // immediately followed by the id\n  if (null != obj.id) {\n    if (nsp) {\n      str += ',';\n      nsp = false;\n    }\n    str += obj.id;\n  }\n\n  // json data\n  if (null != obj.data) {\n    if (nsp) str += ',';\n    str += json.stringify(obj.data);\n  }\n\n  debug('encoded %j as %s', obj, str);\n  return str;\n}\n\n/**\n * Encode packet as 'buffer sequence' by removing blobs, and\n * deconstructing packet into object with placeholders and\n * a list of buffers.\n *\n * @param {Object} packet\n * @return {Buffer} encoded\n * @api private\n */\n\nfunction encodeAsBinary(obj, callback) {\n\n  function writeEncoding(bloblessData) {\n    var deconstruction = binary.deconstructPacket(bloblessData);\n    var pack = encodeAsString(deconstruction.packet);\n    var buffers = deconstruction.buffers;\n\n    buffers.unshift(pack); // add packet info to beginning of data list\n    callback(buffers); // write all the buffers\n  }\n\n  binary.removeBlobs(obj, writeEncoding);\n}\n\n/**\n * A socket.io Decoder instance\n *\n * @return {Object} decoder\n * @api public\n */\n\nfunction Decoder() {\n  this.reconstructor = null;\n}\n\n/**\n * Mix in `Emitter` with Decoder.\n */\n\nEmitter(Decoder.prototype);\n\n/**\n * Decodes an ecoded packet string into packet JSON.\n *\n * @param {String} obj - encoded packet\n * @return {Object} packet\n * @api public\n */\n\nDecoder.prototype.add = function(obj) {\n  var packet;\n  if ('string' == typeof obj) {\n    packet = decodeString(obj);\n    if (exports.BINARY_EVENT == packet.type || exports.BINARY_ACK == packet.type) { // binary packet's json\n      this.reconstructor = new BinaryReconstructor(packet);\n\n      // no attachments, labeled binary but no binary data to follow\n      if (this.reconstructor.reconPack.attachments === 0) {\n        this.emit('decoded', packet);\n      }\n    } else { // non-binary full packet\n      this.emit('decoded', packet);\n    }\n  }\n  else if (isBuf(obj) || obj.base64) { // raw binary data\n    if (!this.reconstructor) {\n      throw new Error('got binary data when not reconstructing a packet');\n    } else {\n      packet = this.reconstructor.takeBinaryData(obj);\n      if (packet) { // received final buffer\n        this.reconstructor = null;\n        this.emit('decoded', packet);\n      }\n    }\n  }\n  else {\n    throw new Error('Unknown type: ' + obj);\n  }\n};\n\n/**\n * Decode a packet String (JSON data)\n *\n * @param {String} str\n * @return {Object} packet\n * @api private\n */\n\nfunction decodeString(str) {\n  var p = {};\n  var i = 0;\n\n  // look up type\n  p.type = Number(str.charAt(0));\n  if (null == exports.types[p.type]) return error();\n\n  // look up attachments if type binary\n  if (exports.BINARY_EVENT == p.type || exports.BINARY_ACK == p.type) {\n    var buf = '';\n    while (str.charAt(++i) != '-') {\n      buf += str.charAt(i);\n      if (i == str.length) break;\n    }\n    if (buf != Number(buf) || str.charAt(i) != '-') {\n      throw new Error('Illegal attachments');\n    }\n    p.attachments = Number(buf);\n  }\n\n  // look up namespace (if any)\n  if ('/' == str.charAt(i + 1)) {\n    p.nsp = '';\n    while (++i) {\n      var c = str.charAt(i);\n      if (',' == c) break;\n      p.nsp += c;\n      if (i == str.length) break;\n    }\n  } else {\n    p.nsp = '/';\n  }\n\n  // look up id\n  var next = str.charAt(i + 1);\n  if ('' !== next && Number(next) == next) {\n    p.id = '';\n    while (++i) {\n      var c = str.charAt(i);\n      if (null == c || Number(c) != c) {\n        --i;\n        break;\n      }\n      p.id += str.charAt(i);\n      if (i == str.length) break;\n    }\n    p.id = Number(p.id);\n  }\n\n  // look up json data\n  if (str.charAt(++i)) {\n    try {\n      p.data = json.parse(str.substr(i));\n    } catch(e){\n      return error();\n    }\n  }\n\n  debug('decoded %s as %j', str, p);\n  return p;\n}\n\n/**\n * Deallocates a parser's resources\n *\n * @api public\n */\n\nDecoder.prototype.destroy = function() {\n  if (this.reconstructor) {\n    this.reconstructor.finishedReconstruction();\n  }\n};\n\n/**\n * A manager of a binary event's 'buffer sequence'. Should\n * be constructed whenever a packet of type BINARY_EVENT is\n * decoded.\n *\n * @param {Object} packet\n * @return {BinaryReconstructor} initialized reconstructor\n * @api private\n */\n\nfunction BinaryReconstructor(packet) {\n  this.reconPack = packet;\n  this.buffers = [];\n}\n\n/**\n * Method to be called when binary data received from connection\n * after a BINARY_EVENT packet.\n *\n * @param {Buffer | ArrayBuffer} binData - the raw binary data received\n * @return {null | Object} returns null if more binary data is expected or\n *   a reconstructed packet object if all buffers have been received.\n * @api private\n */\n\nBinaryReconstructor.prototype.takeBinaryData = function(binData) {\n  this.buffers.push(binData);\n  if (this.buffers.length == this.reconPack.attachments) { // done with buffer list\n    var packet = binary.reconstructPacket(this.reconPack, this.buffers);\n    this.finishedReconstruction();\n    return packet;\n  }\n  return null;\n};\n\n/**\n * Cleans up binary packet reconstruction variables.\n *\n * @api private\n */\n\nBinaryReconstructor.prototype.finishedReconstruction = function() {\n  this.reconPack = null;\n  this.buffers = [];\n};\n\nfunction error(data){\n  return {\n    type: exports.ERROR,\n    data: 'parser error'\n  };\n}\n","\nmodule.exports = isBuf;\n\n/**\n * Returns true if obj is a buffer or an arraybuffer.\n *\n * @api private\n */\n\nfunction isBuf(obj) {\n  return (global.Buffer && global.Buffer.isBuffer(obj)) ||\n         (global.ArrayBuffer && obj instanceof ArrayBuffer);\n}\n","/*! JSON v3.3.2 | http://bestiejs.github.io/json3 | Copyright 2012-2014, Kit Cambridge | http://kit.mit-license.org */\n;(function () {\n  // Detect the `define` function exposed by asynchronous module loaders. The\n  // strict `define` check is necessary for compatibility with `r.js`.\n  var isLoader = typeof define === \"function\" && define.amd;\n\n  // A set of types used to distinguish objects from primitives.\n  var objectTypes = {\n    \"function\": true,\n    \"object\": true\n  };\n\n  // Detect the `exports` object exposed by CommonJS implementations.\n  var freeExports = objectTypes[typeof exports] && exports && !exports.nodeType && exports;\n\n  // Use the `global` object exposed by Node (including Browserify via\n  // `insert-module-globals`), Narwhal, and Ringo as the default context,\n  // and the `window` object in browsers. Rhino exports a `global` function\n  // instead.\n  var root = objectTypes[typeof window] && window || this,\n      freeGlobal = freeExports && objectTypes[typeof module] && module && !module.nodeType && typeof global == \"object\" && global;\n\n  if (freeGlobal && (freeGlobal[\"global\"] === freeGlobal || freeGlobal[\"window\"] === freeGlobal || freeGlobal[\"self\"] === freeGlobal)) {\n    root = freeGlobal;\n  }\n\n  // Public: Initializes JSON 3 using the given `context` object, attaching the\n  // `stringify` and `parse` functions to the specified `exports` object.\n  function runInContext(context, exports) {\n    context || (context = root[\"Object\"]());\n    exports || (exports = root[\"Object\"]());\n\n    // Native constructor aliases.\n    var Number = context[\"Number\"] || root[\"Number\"],\n        String = context[\"String\"] || root[\"String\"],\n        Object = context[\"Object\"] || root[\"Object\"],\n        Date = context[\"Date\"] || root[\"Date\"],\n        SyntaxError = context[\"SyntaxError\"] || root[\"SyntaxError\"],\n        TypeError = context[\"TypeError\"] || root[\"TypeError\"],\n        Math = context[\"Math\"] || root[\"Math\"],\n        nativeJSON = context[\"JSON\"] || root[\"JSON\"];\n\n    // Delegate to the native `stringify` and `parse` implementations.\n    if (typeof nativeJSON == \"object\" && nativeJSON) {\n      exports.stringify = nativeJSON.stringify;\n      exports.parse = nativeJSON.parse;\n    }\n\n    // Convenience aliases.\n    var objectProto = Object.prototype,\n        getClass = objectProto.toString,\n        isProperty, forEach, undef;\n\n    // Test the `Date#getUTC*` methods. Based on work by @Yaffle.\n    var isExtended = new Date(-3509827334573292);\n    try {\n      // The `getUTCFullYear`, `Month`, and `Date` methods return nonsensical\n      // results for certain dates in Opera >= 10.53.\n      isExtended = isExtended.getUTCFullYear() == -109252 && isExtended.getUTCMonth() === 0 && isExtended.getUTCDate() === 1 &&\n        // Safari < 2.0.2 stores the internal millisecond time value correctly,\n        // but clips the values returned by the date methods to the range of\n        // signed 32-bit integers ([-2 ** 31, 2 ** 31 - 1]).\n        isExtended.getUTCHours() == 10 && isExtended.getUTCMinutes() == 37 && isExtended.getUTCSeconds() == 6 && isExtended.getUTCMilliseconds() == 708;\n    } catch (exception) {}\n\n    // Internal: Determines whether the native `JSON.stringify` and `parse`\n    // implementations are spec-compliant. Based on work by Ken Snyder.\n    function has(name) {\n      if (has[name] !== undef) {\n        // Return cached feature test result.\n        return has[name];\n      }\n      var isSupported;\n      if (name == \"bug-string-char-index\") {\n        // IE <= 7 doesn't support accessing string characters using square\n        // bracket notation. IE 8 only supports this for primitives.\n        isSupported = \"a\"[0] != \"a\";\n      } else if (name == \"json\") {\n        // Indicates whether both `JSON.stringify` and `JSON.parse` are\n        // supported.\n        isSupported = has(\"json-stringify\") && has(\"json-parse\");\n      } else {\n        var value, serialized = '{\"a\":[1,true,false,null,\"\\\\u0000\\\\b\\\\n\\\\f\\\\r\\\\t\"]}';\n        // Test `JSON.stringify`.\n        if (name == \"json-stringify\") {\n          var stringify = exports.stringify, stringifySupported = typeof stringify == \"function\" && isExtended;\n          if (stringifySupported) {\n            // A test function object with a custom `toJSON` method.\n            (value = function () {\n              return 1;\n            }).toJSON = value;\n            try {\n              stringifySupported =\n                // Firefox 3.1b1 and b2 serialize string, number, and boolean\n                // primitives as object literals.\n                stringify(0) === \"0\" &&\n                // FF 3.1b1, b2, and JSON 2 serialize wrapped primitives as object\n                // literals.\n                stringify(new Number()) === \"0\" &&\n                stringify(new String()) == '\"\"' &&\n                // FF 3.1b1, 2 throw an error if the value is `null`, `undefined`, or\n                // does not define a canonical JSON representation (this applies to\n                // objects with `toJSON` properties as well, *unless* they are nested\n                // within an object or array).\n                stringify(getClass) === undef &&\n                // IE 8 serializes `undefined` as `\"undefined\"`. Safari <= 5.1.7 and\n                // FF 3.1b3 pass this test.\n                stringify(undef) === undef &&\n                // Safari <= 5.1.7 and FF 3.1b3 throw `Error`s and `TypeError`s,\n                // respectively, if the value is omitted entirely.\n                stringify() === undef &&\n                // FF 3.1b1, 2 throw an error if the given value is not a number,\n                // string, array, object, Boolean, or `null` literal. This applies to\n                // objects with custom `toJSON` methods as well, unless they are nested\n                // inside object or array literals. YUI 3.0.0b1 ignores custom `toJSON`\n                // methods entirely.\n                stringify(value) === \"1\" &&\n                stringify([value]) == \"[1]\" &&\n                // Prototype <= 1.6.1 serializes `[undefined]` as `\"[]\"` instead of\n                // `\"[null]\"`.\n                stringify([undef]) == \"[null]\" &&\n                // YUI 3.0.0b1 fails to serialize `null` literals.\n                stringify(null) == \"null\" &&\n                // FF 3.1b1, 2 halts serialization if an array contains a function:\n                // `[1, true, getClass, 1]` serializes as \"[1,true,],\". FF 3.1b3\n                // elides non-JSON values from objects and arrays, unless they\n                // define custom `toJSON` methods.\n                stringify([undef, getClass, null]) == \"[null,null,null]\" &&\n                // Simple serialization test. FF 3.1b1 uses Unicode escape sequences\n                // where character escape codes are expected (e.g., `\\b` => `\\u0008`).\n                stringify({ \"a\": [value, true, false, null, \"\\x00\\b\\n\\f\\r\\t\"] }) == serialized &&\n                // FF 3.1b1 and b2 ignore the `filter` and `width` arguments.\n                stringify(null, value) === \"1\" &&\n                stringify([1, 2], null, 1) == \"[\\n 1,\\n 2\\n]\" &&\n                // JSON 2, Prototype <= 1.7, and older WebKit builds incorrectly\n                // serialize extended years.\n                stringify(new Date(-8.64e15)) == '\"-271821-04-20T00:00:00.000Z\"' &&\n                // The milliseconds are optional in ES 5, but required in 5.1.\n                stringify(new Date(8.64e15)) == '\"+275760-09-13T00:00:00.000Z\"' &&\n                // Firefox <= 11.0 incorrectly serializes years prior to 0 as negative\n                // four-digit years instead of six-digit years. Credits: @Yaffle.\n                stringify(new Date(-621987552e5)) == '\"-000001-01-01T00:00:00.000Z\"' &&\n                // Safari <= 5.1.5 and Opera >= 10.53 incorrectly serialize millisecond\n                // values less than 1000. Credits: @Yaffle.\n                stringify(new Date(-1)) == '\"1969-12-31T23:59:59.999Z\"';\n            } catch (exception) {\n              stringifySupported = false;\n            }\n          }\n          isSupported = stringifySupported;\n        }\n        // Test `JSON.parse`.\n        if (name == \"json-parse\") {\n          var parse = exports.parse;\n          if (typeof parse == \"function\") {\n            try {\n              // FF 3.1b1, b2 will throw an exception if a bare literal is provided.\n              // Conforming implementations should also coerce the initial argument to\n              // a string prior to parsing.\n              if (parse(\"0\") === 0 && !parse(false)) {\n                // Simple parsing test.\n                value = parse(serialized);\n                var parseSupported = value[\"a\"].length == 5 && value[\"a\"][0] === 1;\n                if (parseSupported) {\n                  try {\n                    // Safari <= 5.1.2 and FF 3.1b1 allow unescaped tabs in strings.\n                    parseSupported = !parse('\"\\t\"');\n                  } catch (exception) {}\n                  if (parseSupported) {\n                    try {\n                      // FF 4.0 and 4.0.1 allow leading `+` signs and leading\n                      // decimal points. FF 4.0, 4.0.1, and IE 9-10 also allow\n                      // certain octal literals.\n                      parseSupported = parse(\"01\") !== 1;\n                    } catch (exception) {}\n                  }\n                  if (parseSupported) {\n                    try {\n                      // FF 4.0, 4.0.1, and Rhino 1.7R3-R4 allow trailing decimal\n                      // points. These environments, along with FF 3.1b1 and 2,\n                      // also allow trailing commas in JSON objects and arrays.\n                      parseSupported = parse(\"1.\") !== 1;\n                    } catch (exception) {}\n                  }\n                }\n              }\n            } catch (exception) {\n              parseSupported = false;\n            }\n          }\n          isSupported = parseSupported;\n        }\n      }\n      return has[name] = !!isSupported;\n    }\n\n    if (!has(\"json\")) {\n      // Common `[[Class]]` name aliases.\n      var functionClass = \"[object Function]\",\n          dateClass = \"[object Date]\",\n          numberClass = \"[object Number]\",\n          stringClass = \"[object String]\",\n          arrayClass = \"[object Array]\",\n          booleanClass = \"[object Boolean]\";\n\n      // Detect incomplete support for accessing string characters by index.\n      var charIndexBuggy = has(\"bug-string-char-index\");\n\n      // Define additional utility methods if the `Date` methods are buggy.\n      if (!isExtended) {\n        var floor = Math.floor;\n        // A mapping between the months of the year and the number of days between\n        // January 1st and the first of the respective month.\n        var Months = [0, 31, 59, 90, 120, 151, 181, 212, 243, 273, 304, 334];\n        // Internal: Calculates the number of days between the Unix epoch and the\n        // first day of the given month.\n        var getDay = function (year, month) {\n          return Months[month] + 365 * (year - 1970) + floor((year - 1969 + (month = +(month > 1))) / 4) - floor((year - 1901 + month) / 100) + floor((year - 1601 + month) / 400);\n        };\n      }\n\n      // Internal: Determines if a property is a direct property of the given\n      // object. Delegates to the native `Object#hasOwnProperty` method.\n      if (!(isProperty = objectProto.hasOwnProperty)) {\n        isProperty = function (property) {\n          var members = {}, constructor;\n          if ((members.__proto__ = null, members.__proto__ = {\n            // The *proto* property cannot be set multiple times in recent\n            // versions of Firefox and SeaMonkey.\n            \"toString\": 1\n          }, members).toString != getClass) {\n            // Safari <= 2.0.3 doesn't implement `Object#hasOwnProperty`, but\n            // supports the mutable *proto* property.\n            isProperty = function (property) {\n              // Capture and break the object's prototype chain (see section 8.6.2\n              // of the ES 5.1 spec). The parenthesized expression prevents an\n              // unsafe transformation by the Closure Compiler.\n              var original = this.__proto__, result = property in (this.__proto__ = null, this);\n              // Restore the original prototype chain.\n              this.__proto__ = original;\n              return result;\n            };\n          } else {\n            // Capture a reference to the top-level `Object` constructor.\n            constructor = members.constructor;\n            // Use the `constructor` property to simulate `Object#hasOwnProperty` in\n            // other environments.\n            isProperty = function (property) {\n              var parent = (this.constructor || constructor).prototype;\n              return property in this && !(property in parent && this[property] === parent[property]);\n            };\n          }\n          members = null;\n          return isProperty.call(this, property);\n        };\n      }\n\n      // Internal: Normalizes the `for...in` iteration algorithm across\n      // environments. Each enumerated key is yielded to a `callback` function.\n      forEach = function (object, callback) {\n        var size = 0, Properties, members, property;\n\n        // Tests for bugs in the current environment's `for...in` algorithm. The\n        // `valueOf` property inherits the non-enumerable flag from\n        // `Object.prototype` in older versions of IE, Netscape, and Mozilla.\n        (Properties = function () {\n          this.valueOf = 0;\n        }).prototype.valueOf = 0;\n\n        // Iterate over a new instance of the `Properties` class.\n        members = new Properties();\n        for (property in members) {\n          // Ignore all properties inherited from `Object.prototype`.\n          if (isProperty.call(members, property)) {\n            size++;\n          }\n        }\n        Properties = members = null;\n\n        // Normalize the iteration algorithm.\n        if (!size) {\n          // A list of non-enumerable properties inherited from `Object.prototype`.\n          members = [\"valueOf\", \"toString\", \"toLocaleString\", \"propertyIsEnumerable\", \"isPrototypeOf\", \"hasOwnProperty\", \"constructor\"];\n          // IE <= 8, Mozilla 1.0, and Netscape 6.2 ignore shadowed non-enumerable\n          // properties.\n          forEach = function (object, callback) {\n            var isFunction = getClass.call(object) == functionClass, property, length;\n            var hasProperty = !isFunction && typeof object.constructor != \"function\" && objectTypes[typeof object.hasOwnProperty] && object.hasOwnProperty || isProperty;\n            for (property in object) {\n              // Gecko <= 1.0 enumerates the `prototype` property of functions under\n              // certain conditions; IE does not.\n              if (!(isFunction && property == \"prototype\") && hasProperty.call(object, property)) {\n                callback(property);\n              }\n            }\n            // Manually invoke the callback for each non-enumerable property.\n            for (length = members.length; property = members[--length]; hasProperty.call(object, property) && callback(property));\n          };\n        } else if (size == 2) {\n          // Safari <= 2.0.4 enumerates shadowed properties twice.\n          forEach = function (object, callback) {\n            // Create a set of iterated properties.\n            var members = {}, isFunction = getClass.call(object) == functionClass, property;\n            for (property in object) {\n              // Store each property name to prevent double enumeration. The\n              // `prototype` property of functions is not enumerated due to cross-\n              // environment inconsistencies.\n              if (!(isFunction && property == \"prototype\") && !isProperty.call(members, property) && (members[property] = 1) && isProperty.call(object, property)) {\n                callback(property);\n              }\n            }\n          };\n        } else {\n          // No bugs detected; use the standard `for...in` algorithm.\n          forEach = function (object, callback) {\n            var isFunction = getClass.call(object) == functionClass, property, isConstructor;\n            for (property in object) {\n              if (!(isFunction && property == \"prototype\") && isProperty.call(object, property) && !(isConstructor = property === \"constructor\")) {\n                callback(property);\n              }\n            }\n            // Manually invoke the callback for the `constructor` property due to\n            // cross-environment inconsistencies.\n            if (isConstructor || isProperty.call(object, (property = \"constructor\"))) {\n              callback(property);\n            }\n          };\n        }\n        return forEach(object, callback);\n      };\n\n      // Public: Serializes a JavaScript `value` as a JSON string. The optional\n      // `filter` argument may specify either a function that alters how object and\n      // array members are serialized, or an array of strings and numbers that\n      // indicates which properties should be serialized. The optional `width`\n      // argument may be either a string or number that specifies the indentation\n      // level of the output.\n      if (!has(\"json-stringify\")) {\n        // Internal: A map of control characters and their escaped equivalents.\n        var Escapes = {\n          92: \"\\\\\\\\\",\n          34: '\\\\\"',\n          8: \"\\\\b\",\n          12: \"\\\\f\",\n          10: \"\\\\n\",\n          13: \"\\\\r\",\n          9: \"\\\\t\"\n        };\n\n        // Internal: Converts `value` into a zero-padded string such that its\n        // length is at least equal to `width`. The `width` must be <= 6.\n        var leadingZeroes = \"000000\";\n        var toPaddedString = function (width, value) {\n          // The `|| 0` expression is necessary to work around a bug in\n          // Opera <= 7.54u2 where `0 == -0`, but `String(-0) !== \"0\"`.\n          return (leadingZeroes + (value || 0)).slice(-width);\n        };\n\n        // Internal: Double-quotes a string `value`, replacing all ASCII control\n        // characters (characters with code unit values between 0 and 31) with\n        // their escaped equivalents. This is an implementation of the\n        // `Quote(value)` operation defined in ES 5.1 section 15.12.3.\n        var unicodePrefix = \"\\\\u00\";\n        var quote = function (value) {\n          var result = '\"', index = 0, length = value.length, useCharIndex = !charIndexBuggy || length > 10;\n          var symbols = useCharIndex && (charIndexBuggy ? value.split(\"\") : value);\n          for (; index < length; index++) {\n            var charCode = value.charCodeAt(index);\n            // If the character is a control character, append its Unicode or\n            // shorthand escape sequence; otherwise, append the character as-is.\n            switch (charCode) {\n              case 8: case 9: case 10: case 12: case 13: case 34: case 92:\n                result += Escapes[charCode];\n                break;\n              default:\n                if (charCode < 32) {\n                  result += unicodePrefix + toPaddedString(2, charCode.toString(16));\n                  break;\n                }\n                result += useCharIndex ? symbols[index] : value.charAt(index);\n            }\n          }\n          return result + '\"';\n        };\n\n        // Internal: Recursively serializes an object. Implements the\n        // `Str(key, holder)`, `JO(value)`, and `JA(value)` operations.\n        var serialize = function (property, object, callback, properties, whitespace, indentation, stack) {\n          var value, className, year, month, date, time, hours, minutes, seconds, milliseconds, results, element, index, length, prefix, result;\n          try {\n            // Necessary for host object support.\n            value = object[property];\n          } catch (exception) {}\n          if (typeof value == \"object\" && value) {\n            className = getClass.call(value);\n            if (className == dateClass && !isProperty.call(value, \"toJSON\")) {\n              if (value > -1 / 0 && value < 1 / 0) {\n                // Dates are serialized according to the `Date#toJSON` method\n                // specified in ES 5.1 section 15.9.5.44. See section 15.9.1.15\n                // for the ISO 8601 date time string format.\n                if (getDay) {\n                  // Manually compute the year, month, date, hours, minutes,\n                  // seconds, and milliseconds if the `getUTC*` methods are\n                  // buggy. Adapted from @Yaffle's `date-shim` project.\n                  date = floor(value / 864e5);\n                  for (year = floor(date / 365.2425) + 1970 - 1; getDay(year + 1, 0) <= date; year++);\n                  for (month = floor((date - getDay(year, 0)) / 30.42); getDay(year, month + 1) <= date; month++);\n                  date = 1 + date - getDay(year, month);\n                  // The `time` value specifies the time within the day (see ES\n                  // 5.1 section 15.9.1.2). The formula `(A % B + B) % B` is used\n                  // to compute `A modulo B`, as the `%` operator does not\n                  // correspond to the `modulo` operation for negative numbers.\n                  time = (value % 864e5 + 864e5) % 864e5;\n                  // The hours, minutes, seconds, and milliseconds are obtained by\n                  // decomposing the time within the day. See section 15.9.1.10.\n                  hours = floor(time / 36e5) % 24;\n                  minutes = floor(time / 6e4) % 60;\n                  seconds = floor(time / 1e3) % 60;\n                  milliseconds = time % 1e3;\n                } else {\n                  year = value.getUTCFullYear();\n                  month = value.getUTCMonth();\n                  date = value.getUTCDate();\n                  hours = value.getUTCHours();\n                  minutes = value.getUTCMinutes();\n                  seconds = value.getUTCSeconds();\n                  milliseconds = value.getUTCMilliseconds();\n                }\n                // Serialize extended years correctly.\n                value = (year <= 0 || year >= 1e4 ? (year < 0 ? \"-\" : \"+\") + toPaddedString(6, year < 0 ? -year : year) : toPaddedString(4, year)) +\n                  \"-\" + toPaddedString(2, month + 1) + \"-\" + toPaddedString(2, date) +\n                  // Months, dates, hours, minutes, and seconds should have two\n                  // digits; milliseconds should have three.\n                  \"T\" + toPaddedString(2, hours) + \":\" + toPaddedString(2, minutes) + \":\" + toPaddedString(2, seconds) +\n                  // Milliseconds are optional in ES 5.0, but required in 5.1.\n                  \".\" + toPaddedString(3, milliseconds) + \"Z\";\n              } else {\n                value = null;\n              }\n            } else if (typeof value.toJSON == \"function\" && ((className != numberClass && className != stringClass && className != arrayClass) || isProperty.call(value, \"toJSON\"))) {\n              // Prototype <= 1.6.1 adds non-standard `toJSON` methods to the\n              // `Number`, `String`, `Date`, and `Array` prototypes. JSON 3\n              // ignores all `toJSON` methods on these objects unless they are\n              // defined directly on an instance.\n              value = value.toJSON(property);\n            }\n          }\n          if (callback) {\n            // If a replacement function was provided, call it to obtain the value\n            // for serialization.\n            value = callback.call(object, property, value);\n          }\n          if (value === null) {\n            return \"null\";\n          }\n          className = getClass.call(value);\n          if (className == booleanClass) {\n            // Booleans are represented literally.\n            return \"\" + value;\n          } else if (className == numberClass) {\n            // JSON numbers must be finite. `Infinity` and `NaN` are serialized as\n            // `\"null\"`.\n            return value > -1 / 0 && value < 1 / 0 ? \"\" + value : \"null\";\n          } else if (className == stringClass) {\n            // Strings are double-quoted and escaped.\n            return quote(\"\" + value);\n          }\n          // Recursively serialize objects and arrays.\n          if (typeof value == \"object\") {\n            // Check for cyclic structures. This is a linear search; performance\n            // is inversely proportional to the number of unique nested objects.\n            for (length = stack.length; length--;) {\n              if (stack[length] === value) {\n                // Cyclic structures cannot be serialized by `JSON.stringify`.\n                throw TypeError();\n              }\n            }\n            // Add the object to the stack of traversed objects.\n            stack.push(value);\n            results = [];\n            // Save the current indentation level and indent one additional level.\n            prefix = indentation;\n            indentation += whitespace;\n            if (className == arrayClass) {\n              // Recursively serialize array elements.\n              for (index = 0, length = value.length; index < length; index++) {\n                element = serialize(index, value, callback, properties, whitespace, indentation, stack);\n                results.push(element === undef ? \"null\" : element);\n              }\n              result = results.length ? (whitespace ? \"[\\n\" + indentation + results.join(\",\\n\" + indentation) + \"\\n\" + prefix + \"]\" : (\"[\" + results.join(\",\") + \"]\")) : \"[]\";\n            } else {\n              // Recursively serialize object members. Members are selected from\n              // either a user-specified list of property names, or the object\n              // itself.\n              forEach(properties || value, function (property) {\n                var element = serialize(property, value, callback, properties, whitespace, indentation, stack);\n                if (element !== undef) {\n                  // According to ES 5.1 section 15.12.3: \"If `gap` {whitespace}\n                  // is not the empty string, let `member` {quote(property) + \":\"}\n                  // be the concatenation of `member` and the `space` character.\"\n                  // The \"`space` character\" refers to the literal space\n                  // character, not the `space` {width} argument provided to\n                  // `JSON.stringify`.\n                  results.push(quote(property) + \":\" + (whitespace ? \" \" : \"\") + element);\n                }\n              });\n              result = results.length ? (whitespace ? \"{\\n\" + indentation + results.join(\",\\n\" + indentation) + \"\\n\" + prefix + \"}\" : (\"{\" + results.join(\",\") + \"}\")) : \"{}\";\n            }\n            // Remove the object from the traversed object stack.\n            stack.pop();\n            return result;\n          }\n        };\n\n        // Public: `JSON.stringify`. See ES 5.1 section 15.12.3.\n        exports.stringify = function (source, filter, width) {\n          var whitespace, callback, properties, className;\n          if (objectTypes[typeof filter] && filter) {\n            if ((className = getClass.call(filter)) == functionClass) {\n              callback = filter;\n            } else if (className == arrayClass) {\n              // Convert the property names array into a makeshift set.\n              properties = {};\n              for (var index = 0, length = filter.length, value; index < length; value = filter[index++], ((className = getClass.call(value)), className == stringClass || className == numberClass) && (properties[value] = 1));\n            }\n          }\n          if (width) {\n            if ((className = getClass.call(width)) == numberClass) {\n              // Convert the `width` to an integer and create a string containing\n              // `width` number of space characters.\n              if ((width -= width % 1) > 0) {\n                for (whitespace = \"\", width > 10 && (width = 10); whitespace.length < width; whitespace += \" \");\n              }\n            } else if (className == stringClass) {\n              whitespace = width.length <= 10 ? width : width.slice(0, 10);\n            }\n          }\n          // Opera <= 7.54u2 discards the values associated with empty string keys\n          // (`\"\"`) only if they are used directly within an object member list\n          // (e.g., `!(\"\" in { \"\": 1})`).\n          return serialize(\"\", (value = {}, value[\"\"] = source, value), callback, properties, whitespace, \"\", []);\n        };\n      }\n\n      // Public: Parses a JSON source string.\n      if (!has(\"json-parse\")) {\n        var fromCharCode = String.fromCharCode;\n\n        // Internal: A map of escaped control characters and their unescaped\n        // equivalents.\n        var Unescapes = {\n          92: \"\\\\\",\n          34: '\"',\n          47: \"/\",\n          98: \"\\b\",\n          116: \"\\t\",\n          110: \"\\n\",\n          102: \"\\f\",\n          114: \"\\r\"\n        };\n\n        // Internal: Stores the parser state.\n        var Index, Source;\n\n        // Internal: Resets the parser state and throws a `SyntaxError`.\n        var abort = function () {\n          Index = Source = null;\n          throw SyntaxError();\n        };\n\n        // Internal: Returns the next token, or `\"$\"` if the parser has reached\n        // the end of the source string. A token may be a string, number, `null`\n        // literal, or Boolean literal.\n        var lex = function () {\n          var source = Source, length = source.length, value, begin, position, isSigned, charCode;\n          while (Index < length) {\n            charCode = source.charCodeAt(Index);\n            switch (charCode) {\n              case 9: case 10: case 13: case 32:\n                // Skip whitespace tokens, including tabs, carriage returns, line\n                // feeds, and space characters.\n                Index++;\n                break;\n              case 123: case 125: case 91: case 93: case 58: case 44:\n                // Parse a punctuator token (`{`, `}`, `[`, `]`, `:`, or `,`) at\n                // the current position.\n                value = charIndexBuggy ? source.charAt(Index) : source[Index];\n                Index++;\n                return value;\n              case 34:\n                // `\"` delimits a JSON string; advance to the next character and\n                // begin parsing the string. String tokens are prefixed with the\n                // sentinel `@` character to distinguish them from punctuators and\n                // end-of-string tokens.\n                for (value = \"@\", Index++; Index < length;) {\n                  charCode = source.charCodeAt(Index);\n                  if (charCode < 32) {\n                    // Unescaped ASCII control characters (those with a code unit\n                    // less than the space character) are not permitted.\n                    abort();\n                  } else if (charCode == 92) {\n                    // A reverse solidus (`\\`) marks the beginning of an escaped\n                    // control character (including `\"`, `\\`, and `/`) or Unicode\n                    // escape sequence.\n                    charCode = source.charCodeAt(++Index);\n                    switch (charCode) {\n                      case 92: case 34: case 47: case 98: case 116: case 110: case 102: case 114:\n                        // Revive escaped control characters.\n                        value += Unescapes[charCode];\n                        Index++;\n                        break;\n                      case 117:\n                        // `\\u` marks the beginning of a Unicode escape sequence.\n                        // Advance to the first character and validate the\n                        // four-digit code point.\n                        begin = ++Index;\n                        for (position = Index + 4; Index < position; Index++) {\n                          charCode = source.charCodeAt(Index);\n                          // A valid sequence comprises four hexdigits (case-\n                          // insensitive) that form a single hexadecimal value.\n                          if (!(charCode >= 48 && charCode <= 57 || charCode >= 97 && charCode <= 102 || charCode >= 65 && charCode <= 70)) {\n                            // Invalid Unicode escape sequence.\n                            abort();\n                          }\n                        }\n                        // Revive the escaped character.\n                        value += fromCharCode(\"0x\" + source.slice(begin, Index));\n                        break;\n                      default:\n                        // Invalid escape sequence.\n                        abort();\n                    }\n                  } else {\n                    if (charCode == 34) {\n                      // An unescaped double-quote character marks the end of the\n                      // string.\n                      break;\n                    }\n                    charCode = source.charCodeAt(Index);\n                    begin = Index;\n                    // Optimize for the common case where a string is valid.\n                    while (charCode >= 32 && charCode != 92 && charCode != 34) {\n                      charCode = source.charCodeAt(++Index);\n                    }\n                    // Append the string as-is.\n                    value += source.slice(begin, Index);\n                  }\n                }\n                if (source.charCodeAt(Index) == 34) {\n                  // Advance to the next character and return the revived string.\n                  Index++;\n                  return value;\n                }\n                // Unterminated string.\n                abort();\n              default:\n                // Parse numbers and literals.\n                begin = Index;\n                // Advance past the negative sign, if one is specified.\n                if (charCode == 45) {\n                  isSigned = true;\n                  charCode = source.charCodeAt(++Index);\n                }\n                // Parse an integer or floating-point value.\n                if (charCode >= 48 && charCode <= 57) {\n                  // Leading zeroes are interpreted as octal literals.\n                  if (charCode == 48 && ((charCode = source.charCodeAt(Index + 1)), charCode >= 48 && charCode <= 57)) {\n                    // Illegal octal literal.\n                    abort();\n                  }\n                  isSigned = false;\n                  // Parse the integer component.\n                  for (; Index < length && ((charCode = source.charCodeAt(Index)), charCode >= 48 && charCode <= 57); Index++);\n                  // Floats cannot contain a leading decimal point; however, this\n                  // case is already accounted for by the parser.\n                  if (source.charCodeAt(Index) == 46) {\n                    position = ++Index;\n                    // Parse the decimal component.\n                    for (; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);\n                    if (position == Index) {\n                      // Illegal trailing decimal.\n                      abort();\n                    }\n                    Index = position;\n                  }\n                  // Parse exponents. The `e` denoting the exponent is\n                  // case-insensitive.\n                  charCode = source.charCodeAt(Index);\n                  if (charCode == 101 || charCode == 69) {\n                    charCode = source.charCodeAt(++Index);\n                    // Skip past the sign following the exponent, if one is\n                    // specified.\n                    if (charCode == 43 || charCode == 45) {\n                      Index++;\n                    }\n                    // Parse the exponential component.\n                    for (position = Index; position < length && ((charCode = source.charCodeAt(position)), charCode >= 48 && charCode <= 57); position++);\n                    if (position == Index) {\n                      // Illegal empty exponent.\n                      abort();\n                    }\n                    Index = position;\n                  }\n                  // Coerce the parsed value to a JavaScript number.\n                  return +source.slice(begin, Index);\n                }\n                // A negative sign may only precede numbers.\n                if (isSigned) {\n                  abort();\n                }\n                // `true`, `false`, and `null` literals.\n                if (source.slice(Index, Index + 4) == \"true\") {\n                  Index += 4;\n                  return true;\n                } else if (source.slice(Index, Index + 5) == \"false\") {\n                  Index += 5;\n                  return false;\n                } else if (source.slice(Index, Index + 4) == \"null\") {\n                  Index += 4;\n                  return null;\n                }\n                // Unrecognized token.\n                abort();\n            }\n          }\n          // Return the sentinel `$` character if the parser has reached the end\n          // of the source string.\n          return \"$\";\n        };\n\n        // Internal: Parses a JSON `value` token.\n        var get = function (value) {\n          var results, hasMembers;\n          if (value == \"$\") {\n            // Unexpected end of input.\n            abort();\n          }\n          if (typeof value == \"string\") {\n            if ((charIndexBuggy ? value.charAt(0) : value[0]) == \"@\") {\n              // Remove the sentinel `@` character.\n              return value.slice(1);\n            }\n            // Parse object and array literals.\n            if (value == \"[\") {\n              // Parses a JSON array, returning a new JavaScript array.\n              results = [];\n              for (;; hasMembers || (hasMembers = true)) {\n                value = lex();\n                // A closing square bracket marks the end of the array literal.\n                if (value == \"]\") {\n                  break;\n                }\n                // If the array literal contains elements, the current token\n                // should be a comma separating the previous element from the\n                // next.\n                if (hasMembers) {\n                  if (value == \",\") {\n                    value = lex();\n                    if (value == \"]\") {\n                      // Unexpected trailing `,` in array literal.\n                      abort();\n                    }\n                  } else {\n                    // A `,` must separate each array element.\n                    abort();\n                  }\n                }\n                // Elisions and leading commas are not permitted.\n                if (value == \",\") {\n                  abort();\n                }\n                results.push(get(value));\n              }\n              return results;\n            } else if (value == \"{\") {\n              // Parses a JSON object, returning a new JavaScript object.\n              results = {};\n              for (;; hasMembers || (hasMembers = true)) {\n                value = lex();\n                // A closing curly brace marks the end of the object literal.\n                if (value == \"}\") {\n                  break;\n                }\n                // If the object literal contains members, the current token\n                // should be a comma separator.\n                if (hasMembers) {\n                  if (value == \",\") {\n                    value = lex();\n                    if (value == \"}\") {\n                      // Unexpected trailing `,` in object literal.\n                      abort();\n                    }\n                  } else {\n                    // A `,` must separate each object member.\n                    abort();\n                  }\n                }\n                // Leading commas are not permitted, object property names must be\n                // double-quoted strings, and a `:` must separate each property\n                // name and value.\n                if (value == \",\" || typeof value != \"string\" || (charIndexBuggy ? value.charAt(0) : value[0]) != \"@\" || lex() != \":\") {\n                  abort();\n                }\n                results[value.slice(1)] = get(lex());\n              }\n              return results;\n            }\n            // Unexpected token encountered.\n            abort();\n          }\n          return value;\n        };\n\n        // Internal: Updates a traversed object member.\n        var update = function (source, property, callback) {\n          var element = walk(source, property, callback);\n          if (element === undef) {\n            delete source[property];\n          } else {\n            source[property] = element;\n          }\n        };\n\n        // Internal: Recursively traverses a parsed JSON object, invoking the\n        // `callback` function for each value. This is an implementation of the\n        // `Walk(holder, name)` operation defined in ES 5.1 section 15.12.2.\n        var walk = function (source, property, callback) {\n          var value = source[property], length;\n          if (typeof value == \"object\" && value) {\n            // `forEach` can't be used to traverse an array in Opera <= 8.54\n            // because its `Object#hasOwnProperty` implementation returns `false`\n            // for array indices (e.g., `![1, 2, 3].hasOwnProperty(\"0\")`).\n            if (getClass.call(value) == arrayClass) {\n              for (length = value.length; length--;) {\n                update(value, length, callback);\n              }\n            } else {\n              forEach(value, function (property) {\n                update(value, property, callback);\n              });\n            }\n          }\n          return callback.call(source, property, value);\n        };\n\n        // Public: `JSON.parse`. See ES 5.1 section 15.12.2.\n        exports.parse = function (source, callback) {\n          var result, value;\n          Index = 0;\n          Source = \"\" + source;\n          result = get(lex());\n          // If a JSON string contains multiple tokens, it is invalid.\n          if (lex() != \"$\") {\n            abort();\n          }\n          // Reset the parser state.\n          Index = Source = null;\n          return callback && getClass.call(callback) == functionClass ? walk((value = {}, value[\"\"] = result, value), \"\", callback) : result;\n        };\n      }\n    }\n\n    exports[\"runInContext\"] = runInContext;\n    return exports;\n  }\n\n  if (freeExports && !isLoader) {\n    // Export for CommonJS environments.\n    runInContext(root, freeExports);\n  } else {\n    // Export for web browsers and JavaScript engines.\n    var nativeJSON = root.JSON,\n        previousJSON = root[\"JSON3\"],\n        isRestored = false;\n\n    var JSON3 = runInContext(root, (root[\"JSON3\"] = {\n      // Public: Restores the original value of the global `JSON` object and\n      // returns a reference to the `JSON3` object.\n      \"noConflict\": function () {\n        if (!isRestored) {\n          isRestored = true;\n          root.JSON = nativeJSON;\n          root[\"JSON3\"] = previousJSON;\n          nativeJSON = previousJSON = null;\n        }\n        return JSON3;\n      }\n    }));\n\n    root.JSON = {\n      \"parse\": JSON3.parse,\n      \"stringify\": JSON3.stringify\n    };\n  }\n\n  // Export for asynchronous module loaders.\n  if (isLoader) {\n    define(function () {\n      return JSON3;\n    });\n  }\n}).call(this);\n","module.exports = toArray\n\nfunction toArray(list, index) {\n    var array = []\n\n    index = index || 0\n\n    for (var i = index || 0; i < list.length; i++) {\n        array[i - index] = list[i]\n    }\n\n    return array\n}\n","/*! https://mths.be/utf8js v2.0.0 by @mathias */\n;(function(root) {\n\n\t// Detect free variables `exports`\n\tvar freeExports = typeof exports == 'object' && exports;\n\n\t// Detect free variable `module`\n\tvar freeModule = typeof module == 'object' && module &&\n\t\tmodule.exports == freeExports && module;\n\n\t// Detect free variable `global`, from Node.js or Browserified code,\n\t// and use it as `root`\n\tvar freeGlobal = typeof global == 'object' && global;\n\tif (freeGlobal.global === freeGlobal || freeGlobal.window === freeGlobal) {\n\t\troot = freeGlobal;\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tvar stringFromCharCode = String.fromCharCode;\n\n\t// Taken from https://mths.be/punycode\n\tfunction ucs2decode(string) {\n\t\tvar output = [];\n\t\tvar counter = 0;\n\t\tvar length = string.length;\n\t\tvar value;\n\t\tvar extra;\n\t\twhile (counter < length) {\n\t\t\tvalue = string.charCodeAt(counter++);\n\t\t\tif (value >= 0xD800 && value <= 0xDBFF && counter < length) {\n\t\t\t\t// high surrogate, and there is a next character\n\t\t\t\textra = string.charCodeAt(counter++);\n\t\t\t\tif ((extra & 0xFC00) == 0xDC00) { // low surrogate\n\t\t\t\t\toutput.push(((value & 0x3FF) << 10) + (extra & 0x3FF) + 0x10000);\n\t\t\t\t} else {\n\t\t\t\t\t// unmatched surrogate; only append this code unit, in case the next\n\t\t\t\t\t// code unit is the high surrogate of a surrogate pair\n\t\t\t\t\toutput.push(value);\n\t\t\t\t\tcounter--;\n\t\t\t\t}\n\t\t\t} else {\n\t\t\t\toutput.push(value);\n\t\t\t}\n\t\t}\n\t\treturn output;\n\t}\n\n\t// Taken from https://mths.be/punycode\n\tfunction ucs2encode(array) {\n\t\tvar length = array.length;\n\t\tvar index = -1;\n\t\tvar value;\n\t\tvar output = '';\n\t\twhile (++index < length) {\n\t\t\tvalue = array[index];\n\t\t\tif (value > 0xFFFF) {\n\t\t\t\tvalue -= 0x10000;\n\t\t\t\toutput += stringFromCharCode(value >>> 10 & 0x3FF | 0xD800);\n\t\t\t\tvalue = 0xDC00 | value & 0x3FF;\n\t\t\t}\n\t\t\toutput += stringFromCharCode(value);\n\t\t}\n\t\treturn output;\n\t}\n\n\tfunction checkScalarValue(codePoint) {\n\t\tif (codePoint >= 0xD800 && codePoint <= 0xDFFF) {\n\t\t\tthrow Error(\n\t\t\t\t'Lone surrogate U+' + codePoint.toString(16).toUpperCase() +\n\t\t\t\t' is not a scalar value'\n\t\t\t);\n\t\t}\n\t}\n\t/*--------------------------------------------------------------------------*/\n\n\tfunction createByte(codePoint, shift) {\n\t\treturn stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80);\n\t}\n\n\tfunction encodeCodePoint(codePoint) {\n\t\tif ((codePoint & 0xFFFFFF80) == 0) { // 1-byte sequence\n\t\t\treturn stringFromCharCode(codePoint);\n\t\t}\n\t\tvar symbol = '';\n\t\tif ((codePoint & 0xFFFFF800) == 0) { // 2-byte sequence\n\t\t\tsymbol = stringFromCharCode(((codePoint >> 6) & 0x1F) | 0xC0);\n\t\t}\n\t\telse if ((codePoint & 0xFFFF0000) == 0) { // 3-byte sequence\n\t\t\tcheckScalarValue(codePoint);\n\t\t\tsymbol = stringFromCharCode(((codePoint >> 12) & 0x0F) | 0xE0);\n\t\t\tsymbol += createByte(codePoint, 6);\n\t\t}\n\t\telse if ((codePoint & 0xFFE00000) == 0) { // 4-byte sequence\n\t\t\tsymbol = stringFromCharCode(((codePoint >> 18) & 0x07) | 0xF0);\n\t\t\tsymbol += createByte(codePoint, 12);\n\t\t\tsymbol += createByte(codePoint, 6);\n\t\t}\n\t\tsymbol += stringFromCharCode((codePoint & 0x3F) | 0x80);\n\t\treturn symbol;\n\t}\n\n\tfunction utf8encode(string) {\n\t\tvar codePoints = ucs2decode(string);\n\t\tvar length = codePoints.length;\n\t\tvar index = -1;\n\t\tvar codePoint;\n\t\tvar byteString = '';\n\t\twhile (++index < length) {\n\t\t\tcodePoint = codePoints[index];\n\t\t\tbyteString += encodeCodePoint(codePoint);\n\t\t}\n\t\treturn byteString;\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tfunction readContinuationByte() {\n\t\tif (byteIndex >= byteCount) {\n\t\t\tthrow Error('Invalid byte index');\n\t\t}\n\n\t\tvar continuationByte = byteArray[byteIndex] & 0xFF;\n\t\tbyteIndex++;\n\n\t\tif ((continuationByte & 0xC0) == 0x80) {\n\t\t\treturn continuationByte & 0x3F;\n\t\t}\n\n\t\t// If we end up here, it’s not a continuation byte\n\t\tthrow Error('Invalid continuation byte');\n\t}\n\n\tfunction decodeSymbol() {\n\t\tvar byte1;\n\t\tvar byte2;\n\t\tvar byte3;\n\t\tvar byte4;\n\t\tvar codePoint;\n\n\t\tif (byteIndex > byteCount) {\n\t\t\tthrow Error('Invalid byte index');\n\t\t}\n\n\t\tif (byteIndex == byteCount) {\n\t\t\treturn false;\n\t\t}\n\n\t\t// Read first byte\n\t\tbyte1 = byteArray[byteIndex] & 0xFF;\n\t\tbyteIndex++;\n\n\t\t// 1-byte sequence (no continuation bytes)\n\t\tif ((byte1 & 0x80) == 0) {\n\t\t\treturn byte1;\n\t\t}\n\n\t\t// 2-byte sequence\n\t\tif ((byte1 & 0xE0) == 0xC0) {\n\t\t\tvar byte2 = readContinuationByte();\n\t\t\tcodePoint = ((byte1 & 0x1F) << 6) | byte2;\n\t\t\tif (codePoint >= 0x80) {\n\t\t\t\treturn codePoint;\n\t\t\t} else {\n\t\t\t\tthrow Error('Invalid continuation byte');\n\t\t\t}\n\t\t}\n\n\t\t// 3-byte sequence (may include unpaired surrogates)\n\t\tif ((byte1 & 0xF0) == 0xE0) {\n\t\t\tbyte2 = readContinuationByte();\n\t\t\tbyte3 = readContinuationByte();\n\t\t\tcodePoint = ((byte1 & 0x0F) << 12) | (byte2 << 6) | byte3;\n\t\t\tif (codePoint >= 0x0800) {\n\t\t\t\tcheckScalarValue(codePoint);\n\t\t\t\treturn codePoint;\n\t\t\t} else {\n\t\t\t\tthrow Error('Invalid continuation byte');\n\t\t\t}\n\t\t}\n\n\t\t// 4-byte sequence\n\t\tif ((byte1 & 0xF8) == 0xF0) {\n\t\t\tbyte2 = readContinuationByte();\n\t\t\tbyte3 = readContinuationByte();\n\t\t\tbyte4 = readContinuationByte();\n\t\t\tcodePoint = ((byte1 & 0x0F) << 0x12) | (byte2 << 0x0C) |\n\t\t\t\t(byte3 << 0x06) | byte4;\n\t\t\tif (codePoint >= 0x010000 && codePoint <= 0x10FFFF) {\n\t\t\t\treturn codePoint;\n\t\t\t}\n\t\t}\n\n\t\tthrow Error('Invalid UTF-8 detected');\n\t}\n\n\tvar byteArray;\n\tvar byteCount;\n\tvar byteIndex;\n\tfunction utf8decode(byteString) {\n\t\tbyteArray = ucs2decode(byteString);\n\t\tbyteCount = byteArray.length;\n\t\tbyteIndex = 0;\n\t\tvar codePoints = [];\n\t\tvar tmp;\n\t\twhile ((tmp = decodeSymbol()) !== false) {\n\t\t\tcodePoints.push(tmp);\n\t\t}\n\t\treturn ucs2encode(codePoints);\n\t}\n\n\t/*--------------------------------------------------------------------------*/\n\n\tvar utf8 = {\n\t\t'version': '2.0.0',\n\t\t'encode': utf8encode,\n\t\t'decode': utf8decode\n\t};\n\n\t// Some AMD build optimizers, like r.js, check for specific condition patterns\n\t// like the following:\n\tif (\n\t\ttypeof define == 'function' &&\n\t\ttypeof define.amd == 'object' &&\n\t\tdefine.amd\n\t) {\n\t\tdefine(function() {\n\t\t\treturn utf8;\n\t\t});\n\t}\telse if (freeExports && !freeExports.nodeType) {\n\t\tif (freeModule) { // in Node.js or RingoJS v0.8.0+\n\t\t\tfreeModule.exports = utf8;\n\t\t} else { // in Narwhal or RingoJS v0.7.0-\n\t\t\tvar object = {};\n\t\t\tvar hasOwnProperty = object.hasOwnProperty;\n\t\t\tfor (var key in utf8) {\n\t\t\t\thasOwnProperty.call(utf8, key) && (freeExports[key] = utf8[key]);\n\t\t\t}\n\t\t}\n\t} else { // in Rhino or a web browser\n\t\troot.utf8 = utf8;\n\t}\n\n}(this));\n","'use strict';\n\nvar alphabet = '0123456789ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz-_'.split('')\n  , length = 64\n  , map = {}\n  , seed = 0\n  , i = 0\n  , prev;\n\n/**\n * Return a string representing the specified number.\n *\n * @param {Number} num The number to convert.\n * @returns {String} The string representation of the number.\n * @api public\n */\nfunction encode(num) {\n  var encoded = '';\n\n  do {\n    encoded = alphabet[num % length] + encoded;\n    num = Math.floor(num / length);\n  } while (num > 0);\n\n  return encoded;\n}\n\n/**\n * Return the integer value specified by the given string.\n *\n * @param {String} str The string to convert.\n * @returns {Number} The integer value represented by the string.\n * @api public\n */\nfunction decode(str) {\n  var decoded = 0;\n\n  for (i = 0; i < str.length; i++) {\n    decoded = decoded * length + map[str.charAt(i)];\n  }\n\n  return decoded;\n}\n\n/**\n * Yeast: A tiny growing id generator.\n *\n * @returns {String} A unique id.\n * @api public\n */\nfunction yeast() {\n  var now = encode(+new Date());\n\n  if (now !== prev) return seed = 0, prev = now;\n  return now +'.'+ encode(seed++);\n}\n\n//\n// Map each character to its index.\n//\nfor (; i < length; i++) map[alphabet[i]] = i;\n\n//\n// Expose the `yeast`, `encode` and `decode` functions.\n//\nyeast.encode = encode;\nyeast.decode = decode;\nmodule.exports = yeast;\n"]}
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