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(function(f){if(typeof exports==="object"&&typeof module!=="undefined"){module.exports=f()}else if(typeof define==="function"&&define.amd){define([],f)}else{var g;if(typeof window!=="undefined"){g=window}else if(typeof global!=="undefined"){g=global}else if(typeof self!=="undefined"){g=self}else{g=this}g.WebRTCPeerClient = f()}})(function(){var define,module,exports;return (function(){function r(e,n,t){function o(i,f){if(!n[i]){if(!e[i]){var c="function"==typeof require&&require;if(!f&&c)return c(i,!0);if(u)return u(i,!0);var a=new Error("Cannot find module '"+i+"'");throw a.code="MODULE_NOT_FOUND",a}var p=n[i]={exports:{}};e[i][0].call(p.exports,function(r){var n=e[i][1][r];return o(n||r)},p,p.exports,r,e,n,t)}return n[i].exports}for(var u="function"==typeof require&&require,i=0;i<t.length;i++)o(t[i]);return o}return r})()({1:[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() {} | |
},{}],2:[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; | |
}; | |
},{}],3:[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; | |
}; | |
},{}],4:[function(require,module,exports){ | |
/* | |
* base64-arraybuffer | |
* https://github.com/niklasvh/base64-arraybuffer | |
* | |
* Copyright (c) 2012 Niklas von Hertzen | |
* Licensed under the MIT license. | |
*/ | |
(function(){ | |
"use strict"; | |
var chars = "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/"; | |
// Use a lookup table to find the index. | |
var lookup = new Uint8Array(256); | |
for (var i = 0; i < chars.length; i++) { | |
lookup[chars.charCodeAt(i)] = i; | |
} | |
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 = lookup[base64.charCodeAt(i)]; | |
encoded2 = lookup[base64.charCodeAt(i+1)]; | |
encoded3 = lookup[base64.charCodeAt(i+2)]; | |
encoded4 = lookup[base64.charCodeAt(i+3)]; | |
bytes[p++] = (encoded1 << 2) | (encoded2 >> 4); | |
bytes[p++] = ((encoded2 & 15) << 4) | (encoded3 >> 2); | |
bytes[p++] = ((encoded3 & 3) << 6) | (encoded4 & 63); | |
} | |
return arraybuffer; | |
}; | |
})(); | |
},{}],5:[function(require,module,exports){ | |
'use strict' | |
exports.byteLength = byteLength | |
exports.toByteArray = toByteArray | |
exports.fromByteArray = fromByteArray | |
var lookup = [] | |
var revLookup = [] | |
var Arr = typeof Uint8Array !== 'undefined' ? Uint8Array : Array | |
var code = 'ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/' | |
for (var i = 0, len = code.length; i < len; ++i) { | |
lookup[i] = code[i] | |
revLookup[code.charCodeAt(i)] = i | |
} | |
// Support decoding URL-safe base64 strings, as Node.js does. | |
// See: https://en.wikipedia.org/wiki/Base64#URL_applications | |
revLookup['-'.charCodeAt(0)] = 62 | |
revLookup['_'.charCodeAt(0)] = 63 | |
function getLens (b64) { | |
var len = b64.length | |
if (len % 4 > 0) { | |
throw new Error('Invalid string. Length must be a multiple of 4') | |
} | |
// Trim off extra bytes after placeholder bytes are found | |
// See: https://github.com/beatgammit/base64-js/issues/42 | |
var validLen = b64.indexOf('=') | |
if (validLen === -1) validLen = len | |
var placeHoldersLen = validLen === len | |
? 0 | |
: 4 - (validLen % 4) | |
return [validLen, placeHoldersLen] | |
} | |
// base64 is 4/3 + up to two characters of the original data | |
function byteLength (b64) { | |
var lens = getLens(b64) | |
var validLen = lens[0] | |
var placeHoldersLen = lens[1] | |
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen | |
} | |
function _byteLength (b64, validLen, placeHoldersLen) { | |
return ((validLen + placeHoldersLen) * 3 / 4) - placeHoldersLen | |
} | |
function toByteArray (b64) { | |
var tmp | |
var lens = getLens(b64) | |
var validLen = lens[0] | |
var placeHoldersLen = lens[1] | |
var arr = new Arr(_byteLength(b64, validLen, placeHoldersLen)) | |
var curByte = 0 | |
// if there are placeholders, only get up to the last complete 4 chars | |
var len = placeHoldersLen > 0 | |
? validLen - 4 | |
: validLen | |
var i | |
for (i = 0; i < len; i += 4) { | |
tmp = | |
(revLookup[b64.charCodeAt(i)] << 18) | | |
(revLookup[b64.charCodeAt(i + 1)] << 12) | | |
(revLookup[b64.charCodeAt(i + 2)] << 6) | | |
revLookup[b64.charCodeAt(i + 3)] | |
arr[curByte++] = (tmp >> 16) & 0xFF | |
arr[curByte++] = (tmp >> 8) & 0xFF | |
arr[curByte++] = tmp & 0xFF | |
} | |
if (placeHoldersLen === 2) { | |
tmp = | |
(revLookup[b64.charCodeAt(i)] << 2) | | |
(revLookup[b64.charCodeAt(i + 1)] >> 4) | |
arr[curByte++] = tmp & 0xFF | |
} | |
if (placeHoldersLen === 1) { | |
tmp = | |
(revLookup[b64.charCodeAt(i)] << 10) | | |
(revLookup[b64.charCodeAt(i + 1)] << 4) | | |
(revLookup[b64.charCodeAt(i + 2)] >> 2) | |
arr[curByte++] = (tmp >> 8) & 0xFF | |
arr[curByte++] = tmp & 0xFF | |
} | |
return arr | |
} | |
function tripletToBase64 (num) { | |
return lookup[num >> 18 & 0x3F] + | |
lookup[num >> 12 & 0x3F] + | |
lookup[num >> 6 & 0x3F] + | |
lookup[num & 0x3F] | |
} | |
function encodeChunk (uint8, start, end) { | |
var tmp | |
var output = [] | |
for (var i = start; i < end; i += 3) { | |
tmp = | |
((uint8[i] << 16) & 0xFF0000) + | |
((uint8[i + 1] << 8) & 0xFF00) + | |
(uint8[i + 2] & 0xFF) | |
output.push(tripletToBase64(tmp)) | |
} | |
return output.join('') | |
} | |
function fromByteArray (uint8) { | |
var tmp | |
var len = uint8.length | |
var extraBytes = len % 3 // if we have 1 byte left, pad 2 bytes | |
var parts = [] | |
var maxChunkLength = 16383 // must be multiple of 3 | |
// go through the array every three bytes, we'll deal with trailing stuff later | |
for (var i = 0, len2 = len - extraBytes; i < len2; i += maxChunkLength) { | |
parts.push(encodeChunk( | |
uint8, i, (i + maxChunkLength) > len2 ? len2 : (i + maxChunkLength) | |
)) | |
} | |
// pad the end with zeros, but make sure to not forget the extra bytes | |
if (extraBytes === 1) { | |
tmp = uint8[len - 1] | |
parts.push( | |
lookup[tmp >> 2] + | |
lookup[(tmp << 4) & 0x3F] + | |
'==' | |
) | |
} else if (extraBytes === 2) { | |
tmp = (uint8[len - 2] << 8) + uint8[len - 1] | |
parts.push( | |
lookup[tmp >> 10] + | |
lookup[(tmp >> 4) & 0x3F] + | |
lookup[(tmp << 2) & 0x3F] + | |
'=' | |
) | |
} | |
return parts.join('') | |
} | |
},{}],6:[function(require,module,exports){ | |
/** | |
* Create a blob builder even when vendor prefixes exist | |
*/ | |
var BlobBuilder = typeof BlobBuilder !== 'undefined' ? BlobBuilder : | |
typeof WebKitBlobBuilder !== 'undefined' ? WebKitBlobBuilder : | |
typeof MSBlobBuilder !== 'undefined' ? MSBlobBuilder : | |
typeof MozBlobBuilder !== 'undefined' ? MozBlobBuilder : | |
false; | |
/** | |
* 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) { | |
return ary.map(function(chunk) { | |
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; | |
} | |
return buf; | |
} | |
return chunk; | |
}); | |
} | |
function BlobBuilderConstructor(ary, options) { | |
options = options || {}; | |
var bb = new BlobBuilder(); | |
mapArrayBufferViews(ary).forEach(function(part) { | |
bb.append(part); | |
}); | |
return (options.type) ? bb.getBlob(options.type) : bb.getBlob(); | |
}; | |
function BlobConstructor(ary, options) { | |
return new Blob(mapArrayBufferViews(ary), options || {}); | |
}; | |
if (typeof Blob !== 'undefined') { | |
BlobBuilderConstructor.prototype = Blob.prototype; | |
BlobConstructor.prototype = Blob.prototype; | |
} | |
module.exports = (function() { | |
if (blobSupported) { | |
return blobSupportsArrayBufferView ? Blob : BlobConstructor; | |
} else if (blobBuilderSupported) { | |
return BlobBuilderConstructor; | |
} else { | |
return undefined; | |
} | |
})(); | |
},{}],7:[function(require,module,exports){ | |
},{}],8:[function(require,module,exports){ | |
(function (Buffer){ | |
/*! | |
* The buffer module from node.js, for the browser. | |
* | |
* @author Feross Aboukhadijeh <https://feross.org> | |
* @license MIT | |
*/ | |
/* eslint-disable no-proto */ | |
'use strict' | |
var base64 = require('base64-js') | |
var ieee754 = require('ieee754') | |
var customInspectSymbol = | |
(typeof Symbol === 'function' && typeof Symbol.for === 'function') | |
? Symbol.for('nodejs.util.inspect.custom') | |
: null | |
exports.Buffer = Buffer | |
exports.SlowBuffer = SlowBuffer | |
exports.INSPECT_MAX_BYTES = 50 | |
var K_MAX_LENGTH = 0x7fffffff | |
exports.kMaxLength = K_MAX_LENGTH | |
/** | |
* If `Buffer.TYPED_ARRAY_SUPPORT`: | |
* === true Use Uint8Array implementation (fastest) | |
* === false Print warning and recommend using `buffer` v4.x which has an Object | |
* implementation (most compatible, even IE6) | |
* | |
* Browsers that support typed arrays are IE 10+, Firefox 4+, Chrome 7+, Safari 5.1+, | |
* Opera 11.6+, iOS 4.2+. | |
* | |
* We report that the browser does not support typed arrays if the are not subclassable | |
* using __proto__. Firefox 4-29 lacks support for adding new properties to `Uint8Array` | |
* (See: https://bugzilla.mozilla.org/show_bug.cgi?id=695438). IE 10 lacks support | |
* for __proto__ and has a buggy typed array implementation. | |
*/ | |
Buffer.TYPED_ARRAY_SUPPORT = typedArraySupport() | |
if (!Buffer.TYPED_ARRAY_SUPPORT && typeof console !== 'undefined' && | |
typeof console.error === 'function') { | |
console.error( | |
'This browser lacks typed array (Uint8Array) support which is required by ' + | |
'`buffer` v5.x. Use `buffer` v4.x if you require old browser support.' | |
) | |
} | |
function typedArraySupport () { | |
// Can typed array instances can be augmented? | |
try { | |
var arr = new Uint8Array(1) | |
var proto = { foo: function () { return 42 } } | |
Object.setPrototypeOf(proto, Uint8Array.prototype) | |
Object.setPrototypeOf(arr, proto) | |
return arr.foo() === 42 | |
} catch (e) { | |
return false | |
} | |
} | |
Object.defineProperty(Buffer.prototype, 'parent', { | |
enumerable: true, | |
get: function () { | |
if (!Buffer.isBuffer(this)) return undefined | |
return this.buffer | |
} | |
}) | |
Object.defineProperty(Buffer.prototype, 'offset', { | |
enumerable: true, | |
get: function () { | |
if (!Buffer.isBuffer(this)) return undefined | |
return this.byteOffset | |
} | |
}) | |
function createBuffer (length) { | |
if (length > K_MAX_LENGTH) { | |
throw new RangeError('The value "' + length + '" is invalid for option "size"') | |
} | |
// Return an augmented `Uint8Array` instance | |
var buf = new Uint8Array(length) | |
Object.setPrototypeOf(buf, Buffer.prototype) | |
return buf | |
} | |
/** | |
* The Buffer constructor returns instances of `Uint8Array` that have their | |
* prototype changed to `Buffer.prototype`. Furthermore, `Buffer` is a subclass of | |
* `Uint8Array`, so the returned instances will have all the node `Buffer` methods | |
* and the `Uint8Array` methods. Square bracket notation works as expected -- it | |
* returns a single octet. | |
* | |
* The `Uint8Array` prototype remains unmodified. | |
*/ | |
function Buffer (arg, encodingOrOffset, length) { | |
// Common case. | |
if (typeof arg === 'number') { | |
if (typeof encodingOrOffset === 'string') { | |
throw new TypeError( | |
'The "string" argument must be of type string. Received type number' | |
) | |
} | |
return allocUnsafe(arg) | |
} | |
return from(arg, encodingOrOffset, length) | |
} | |
// Fix subarray() in ES2016. See: https://github.com/feross/buffer/pull/97 | |
if (typeof Symbol !== 'undefined' && Symbol.species != null && | |
Buffer[Symbol.species] === Buffer) { | |
Object.defineProperty(Buffer, Symbol.species, { | |
value: null, | |
configurable: true, | |
enumerable: false, | |
writable: false | |
}) | |
} | |
Buffer.poolSize = 8192 // not used by this implementation | |
function from (value, encodingOrOffset, length) { | |
if (typeof value === 'string') { | |
return fromString(value, encodingOrOffset) | |
} | |
if (ArrayBuffer.isView(value)) { | |
return fromArrayLike(value) | |
} | |
if (value == null) { | |
throw new TypeError( | |
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + | |
'or Array-like Object. Received type ' + (typeof value) | |
) | |
} | |
if (isInstance(value, ArrayBuffer) || | |
(value && isInstance(value.buffer, ArrayBuffer))) { | |
return fromArrayBuffer(value, encodingOrOffset, length) | |
} | |
if (typeof value === 'number') { | |
throw new TypeError( | |
'The "value" argument must not be of type number. Received type number' | |
) | |
} | |
var valueOf = value.valueOf && value.valueOf() | |
if (valueOf != null && valueOf !== value) { | |
return Buffer.from(valueOf, encodingOrOffset, length) | |
} | |
var b = fromObject(value) | |
if (b) return b | |
if (typeof Symbol !== 'undefined' && Symbol.toPrimitive != null && | |
typeof value[Symbol.toPrimitive] === 'function') { | |
return Buffer.from( | |
value[Symbol.toPrimitive]('string'), encodingOrOffset, length | |
) | |
} | |
throw new TypeError( | |
'The first argument must be one of type string, Buffer, ArrayBuffer, Array, ' + | |
'or Array-like Object. Received type ' + (typeof value) | |
) | |
} | |
/** | |
* Functionally equivalent to Buffer(arg, encoding) but throws a TypeError | |
* if value is a number. | |
* Buffer.from(str[, encoding]) | |
* Buffer.from(array) | |
* Buffer.from(buffer) | |
* Buffer.from(arrayBuffer[, byteOffset[, length]]) | |
**/ | |
Buffer.from = function (value, encodingOrOffset, length) { | |
return from(value, encodingOrOffset, length) | |
} | |
// Note: Change prototype *after* Buffer.from is defined to workaround Chrome bug: | |
// https://github.com/feross/buffer/pull/148 | |
Object.setPrototypeOf(Buffer.prototype, Uint8Array.prototype) | |
Object.setPrototypeOf(Buffer, Uint8Array) | |
function assertSize (size) { | |
if (typeof size !== 'number') { | |
throw new TypeError('"size" argument must be of type number') | |
} else if (size < 0) { | |
throw new RangeError('The value "' + size + '" is invalid for option "size"') | |
} | |
} | |
function alloc (size, fill, encoding) { | |
assertSize(size) | |
if (size <= 0) { | |
return createBuffer(size) | |
} | |
if (fill !== undefined) { | |
// Only pay attention to encoding if it's a string. This | |
// prevents accidentally sending in a number that would | |
// be interpretted as a start offset. | |
return typeof encoding === 'string' | |
? createBuffer(size).fill(fill, encoding) | |
: createBuffer(size).fill(fill) | |
} | |
return createBuffer(size) | |
} | |
/** | |
* Creates a new filled Buffer instance. | |
* alloc(size[, fill[, encoding]]) | |
**/ | |
Buffer.alloc = function (size, fill, encoding) { | |
return alloc(size, fill, encoding) | |
} | |
function allocUnsafe (size) { | |
assertSize(size) | |
return createBuffer(size < 0 ? 0 : checked(size) | 0) | |
} | |
/** | |
* Equivalent to Buffer(num), by default creates a non-zero-filled Buffer instance. | |
* */ | |
Buffer.allocUnsafe = function (size) { | |
return allocUnsafe(size) | |
} | |
/** | |
* Equivalent to SlowBuffer(num), by default creates a non-zero-filled Buffer instance. | |
*/ | |
Buffer.allocUnsafeSlow = function (size) { | |
return allocUnsafe(size) | |
} | |
function fromString (string, encoding) { | |
if (typeof encoding !== 'string' || encoding === '') { | |
encoding = 'utf8' | |
} | |
if (!Buffer.isEncoding(encoding)) { | |
throw new TypeError('Unknown encoding: ' + encoding) | |
} | |
var length = byteLength(string, encoding) | 0 | |
var buf = createBuffer(length) | |
var actual = buf.write(string, encoding) | |
if (actual !== length) { | |
// Writing a hex string, for example, that contains invalid characters will | |
// cause everything after the first invalid character to be ignored. (e.g. | |
// 'abxxcd' will be treated as 'ab') | |
buf = buf.slice(0, actual) | |
} | |
return buf | |
} | |
function fromArrayLike (array) { | |
var length = array.length < 0 ? 0 : checked(array.length) | 0 | |
var buf = createBuffer(length) | |
for (var i = 0; i < length; i += 1) { | |
buf[i] = array[i] & 255 | |
} | |
return buf | |
} | |
function fromArrayBuffer (array, byteOffset, length) { | |
if (byteOffset < 0 || array.byteLength < byteOffset) { | |
throw new RangeError('"offset" is outside of buffer bounds') | |
} | |
if (array.byteLength < byteOffset + (length || 0)) { | |
throw new RangeError('"length" is outside of buffer bounds') | |
} | |
var buf | |
if (byteOffset === undefined && length === undefined) { | |
buf = new Uint8Array(array) | |
} else if (length === undefined) { | |
buf = new Uint8Array(array, byteOffset) | |
} else { | |
buf = new Uint8Array(array, byteOffset, length) | |
} | |
// Return an augmented `Uint8Array` instance | |
Object.setPrototypeOf(buf, Buffer.prototype) | |
return buf | |
} | |
function fromObject (obj) { | |
if (Buffer.isBuffer(obj)) { | |
var len = checked(obj.length) | 0 | |
var buf = createBuffer(len) | |
if (buf.length === 0) { | |
return buf | |
} | |
obj.copy(buf, 0, 0, len) | |
return buf | |
} | |
if (obj.length !== undefined) { | |
if (typeof obj.length !== 'number' || numberIsNaN(obj.length)) { | |
return createBuffer(0) | |
} | |
return fromArrayLike(obj) | |
} | |
if (obj.type === 'Buffer' && Array.isArray(obj.data)) { | |
return fromArrayLike(obj.data) | |
} | |
} | |
function checked (length) { | |
// Note: cannot use `length < K_MAX_LENGTH` here because that fails when | |
// length is NaN (which is otherwise coerced to zero.) | |
if (length >= K_MAX_LENGTH) { | |
throw new RangeError('Attempt to allocate Buffer larger than maximum ' + | |
'size: 0x' + K_MAX_LENGTH.toString(16) + ' bytes') | |
} | |
return length | 0 | |
} | |
function SlowBuffer (length) { | |
if (+length != length) { // eslint-disable-line eqeqeq | |
length = 0 | |
} | |
return Buffer.alloc(+length) | |
} | |
Buffer.isBuffer = function isBuffer (b) { | |
return b != null && b._isBuffer === true && | |
b !== Buffer.prototype // so Buffer.isBuffer(Buffer.prototype) will be false | |
} | |
Buffer.compare = function compare (a, b) { | |
if (isInstance(a, Uint8Array)) a = Buffer.from(a, a.offset, a.byteLength) | |
if (isInstance(b, Uint8Array)) b = Buffer.from(b, b.offset, b.byteLength) | |
if (!Buffer.isBuffer(a) || !Buffer.isBuffer(b)) { | |
throw new TypeError( | |
'The "buf1", "buf2" arguments must be one of type Buffer or Uint8Array' | |
) | |
} | |
if (a === b) return 0 | |
var x = a.length | |
var y = b.length | |
for (var i = 0, len = Math.min(x, y); i < len; ++i) { | |
if (a[i] !== b[i]) { | |
x = a[i] | |
y = b[i] | |
break | |
} | |
} | |
if (x < y) return -1 | |
if (y < x) return 1 | |
return 0 | |
} | |
Buffer.isEncoding = function isEncoding (encoding) { | |
switch (String(encoding).toLowerCase()) { | |
case 'hex': | |
case 'utf8': | |
case 'utf-8': | |
case 'ascii': | |
case 'latin1': | |
case 'binary': | |
case 'base64': | |
case 'ucs2': | |
case 'ucs-2': | |
case 'utf16le': | |
case 'utf-16le': | |
return true | |
default: | |
return false | |
} | |
} | |
Buffer.concat = function concat (list, length) { | |
if (!Array.isArray(list)) { | |
throw new TypeError('"list" argument must be an Array of Buffers') | |
} | |
if (list.length === 0) { | |
return Buffer.alloc(0) | |
} | |
var i | |
if (length === undefined) { | |
length = 0 | |
for (i = 0; i < list.length; ++i) { | |
length += list[i].length | |
} | |
} | |
var buffer = Buffer.allocUnsafe(length) | |
var pos = 0 | |
for (i = 0; i < list.length; ++i) { | |
var buf = list[i] | |
if (isInstance(buf, Uint8Array)) { | |
buf = Buffer.from(buf) | |
} | |
if (!Buffer.isBuffer(buf)) { | |
throw new TypeError('"list" argument must be an Array of Buffers') | |
} | |
buf.copy(buffer, pos) | |
pos += buf.length | |
} | |
return buffer | |
} | |
function byteLength (string, encoding) { | |
if (Buffer.isBuffer(string)) { | |
return string.length | |
} | |
if (ArrayBuffer.isView(string) || isInstance(string, ArrayBuffer)) { | |
return string.byteLength | |
} | |
if (typeof string !== 'string') { | |
throw new TypeError( | |
'The "string" argument must be one of type string, Buffer, or ArrayBuffer. ' + | |
'Received type ' + typeof string | |
) | |
} | |
var len = string.length | |
var mustMatch = (arguments.length > 2 && arguments[2] === true) | |
if (!mustMatch && len === 0) return 0 | |
// Use a for loop to avoid recursion | |
var loweredCase = false | |
for (;;) { | |
switch (encoding) { | |
case 'ascii': | |
case 'latin1': | |
case 'binary': | |
return len | |
case 'utf8': | |
case 'utf-8': | |
return utf8ToBytes(string).length | |
case 'ucs2': | |
case 'ucs-2': | |
case 'utf16le': | |
case 'utf-16le': | |
return len * 2 | |
case 'hex': | |
return len >>> 1 | |
case 'base64': | |
return base64ToBytes(string).length | |
default: | |
if (loweredCase) { | |
return mustMatch ? -1 : utf8ToBytes(string).length // assume utf8 | |
} | |
encoding = ('' + encoding).toLowerCase() | |
loweredCase = true | |
} | |
} | |
} | |
Buffer.byteLength = byteLength | |
function slowToString (encoding, start, end) { | |
var loweredCase = false | |
// No need to verify that "this.length <= MAX_UINT32" since it's a read-only | |
// property of a typed array. | |
// This behaves neither like String nor Uint8Array in that we set start/end | |
// to their upper/lower bounds if the value passed is out of range. | |
// undefined is handled specially as per ECMA-262 6th Edition, | |
// Section 13.3.3.7 Runtime Semantics: KeyedBindingInitialization. | |
if (start === undefined || start < 0) { | |
start = 0 | |
} | |
// Return early if start > this.length. Done here to prevent potential uint32 | |
// coercion fail below. | |
if (start > this.length) { | |
return '' | |
} | |
if (end === undefined || end > this.length) { | |
end = this.length | |
} | |
if (end <= 0) { | |
return '' | |
} | |
// Force coersion to uint32. This will also coerce falsey/NaN values to 0. | |
end >>>= 0 | |
start >>>= 0 | |
if (end <= start) { | |
return '' | |
} | |
if (!encoding) encoding = 'utf8' | |
while (true) { | |
switch (encoding) { | |
case 'hex': | |
return hexSlice(this, start, end) | |
case 'utf8': | |
case 'utf-8': | |
return utf8Slice(this, start, end) | |
case 'ascii': | |
return asciiSlice(this, start, end) | |
case 'latin1': | |
case 'binary': | |
return latin1Slice(this, start, end) | |
case 'base64': | |
return base64Slice(this, start, end) | |
case 'ucs2': | |
case 'ucs-2': | |
case 'utf16le': | |
case 'utf-16le': | |
return utf16leSlice(this, start, end) | |
default: | |
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) | |
encoding = (encoding + '').toLowerCase() | |
loweredCase = true | |
} | |
} | |
} | |
// This property is used by `Buffer.isBuffer` (and the `is-buffer` npm package) | |
// to detect a Buffer instance. It's not possible to use `instanceof Buffer` | |
// reliably in a browserify context because there could be multiple different | |
// copies of the 'buffer' package in use. This method works even for Buffer | |
// instances that were created from another copy of the `buffer` package. | |
// See: https://github.com/feross/buffer/issues/154 | |
Buffer.prototype._isBuffer = true | |
function swap (b, n, m) { | |
var i = b[n] | |
b[n] = b[m] | |
b[m] = i | |
} | |
Buffer.prototype.swap16 = function swap16 () { | |
var len = this.length | |
if (len % 2 !== 0) { | |
throw new RangeError('Buffer size must be a multiple of 16-bits') | |
} | |
for (var i = 0; i < len; i += 2) { | |
swap(this, i, i + 1) | |
} | |
return this | |
} | |
Buffer.prototype.swap32 = function swap32 () { | |
var len = this.length | |
if (len % 4 !== 0) { | |
throw new RangeError('Buffer size must be a multiple of 32-bits') | |
} | |
for (var i = 0; i < len; i += 4) { | |
swap(this, i, i + 3) | |
swap(this, i + 1, i + 2) | |
} | |
return this | |
} | |
Buffer.prototype.swap64 = function swap64 () { | |
var len = this.length | |
if (len % 8 !== 0) { | |
throw new RangeError('Buffer size must be a multiple of 64-bits') | |
} | |
for (var i = 0; i < len; i += 8) { | |
swap(this, i, i + 7) | |
swap(this, i + 1, i + 6) | |
swap(this, i + 2, i + 5) | |
swap(this, i + 3, i + 4) | |
} | |
return this | |
} | |
Buffer.prototype.toString = function toString () { | |
var length = this.length | |
if (length === 0) return '' | |
if (arguments.length === 0) return utf8Slice(this, 0, length) | |
return slowToString.apply(this, arguments) | |
} | |
Buffer.prototype.toLocaleString = Buffer.prototype.toString | |
Buffer.prototype.equals = function equals (b) { | |
if (!Buffer.isBuffer(b)) throw new TypeError('Argument must be a Buffer') | |
if (this === b) return true | |
return Buffer.compare(this, b) === 0 | |
} | |
Buffer.prototype.inspect = function inspect () { | |
var str = '' | |
var max = exports.INSPECT_MAX_BYTES | |
str = this.toString('hex', 0, max).replace(/(.{2})/g, '$1 ').trim() | |
if (this.length > max) str += ' ... ' | |
return '<Buffer ' + str + '>' | |
} | |
if (customInspectSymbol) { | |
Buffer.prototype[customInspectSymbol] = Buffer.prototype.inspect | |
} | |
Buffer.prototype.compare = function compare (target, start, end, thisStart, thisEnd) { | |
if (isInstance(target, Uint8Array)) { | |
target = Buffer.from(target, target.offset, target.byteLength) | |
} | |
if (!Buffer.isBuffer(target)) { | |
throw new TypeError( | |
'The "target" argument must be one of type Buffer or Uint8Array. ' + | |
'Received type ' + (typeof target) | |
) | |
} | |
if (start === undefined) { | |
start = 0 | |
} | |
if (end === undefined) { | |
end = target ? target.length : 0 | |
} | |
if (thisStart === undefined) { | |
thisStart = 0 | |
} | |
if (thisEnd === undefined) { | |
thisEnd = this.length | |
} | |
if (start < 0 || end > target.length || thisStart < 0 || thisEnd > this.length) { | |
throw new RangeError('out of range index') | |
} | |
if (thisStart >= thisEnd && start >= end) { | |
return 0 | |
} | |
if (thisStart >= thisEnd) { | |
return -1 | |
} | |
if (start >= end) { | |
return 1 | |
} | |
start >>>= 0 | |
end >>>= 0 | |
thisStart >>>= 0 | |
thisEnd >>>= 0 | |
if (this === target) return 0 | |
var x = thisEnd - thisStart | |
var y = end - start | |
var len = Math.min(x, y) | |
var thisCopy = this.slice(thisStart, thisEnd) | |
var targetCopy = target.slice(start, end) | |
for (var i = 0; i < len; ++i) { | |
if (thisCopy[i] !== targetCopy[i]) { | |
x = thisCopy[i] | |
y = targetCopy[i] | |
break | |
} | |
} | |
if (x < y) return -1 | |
if (y < x) return 1 | |
return 0 | |
} | |
// Finds either the first index of `val` in `buffer` at offset >= `byteOffset`, | |
// OR the last index of `val` in `buffer` at offset <= `byteOffset`. | |
// | |
// Arguments: | |
// - buffer - a Buffer to search | |
// - val - a string, Buffer, or number | |
// - byteOffset - an index into `buffer`; will be clamped to an int32 | |
// - encoding - an optional encoding, relevant is val is a string | |
// - dir - true for indexOf, false for lastIndexOf | |
function bidirectionalIndexOf (buffer, val, byteOffset, encoding, dir) { | |
// Empty buffer means no match | |
if (buffer.length === 0) return -1 | |
// Normalize byteOffset | |
if (typeof byteOffset === 'string') { | |
encoding = byteOffset | |
byteOffset = 0 | |
} else if (byteOffset > 0x7fffffff) { | |
byteOffset = 0x7fffffff | |
} else if (byteOffset < -0x80000000) { | |
byteOffset = -0x80000000 | |
} | |
byteOffset = +byteOffset // Coerce to Number. | |
if (numberIsNaN(byteOffset)) { | |
// byteOffset: it it's undefined, null, NaN, "foo", etc, search whole buffer | |
byteOffset = dir ? 0 : (buffer.length - 1) | |
} | |
// Normalize byteOffset: negative offsets start from the end of the buffer | |
if (byteOffset < 0) byteOffset = buffer.length + byteOffset | |
if (byteOffset >= buffer.length) { | |
if (dir) return -1 | |
else byteOffset = buffer.length - 1 | |
} else if (byteOffset < 0) { | |
if (dir) byteOffset = 0 | |
else return -1 | |
} | |
// Normalize val | |
if (typeof val === 'string') { | |
val = Buffer.from(val, encoding) | |
} | |
// Finally, search either indexOf (if dir is true) or lastIndexOf | |
if (Buffer.isBuffer(val)) { | |
// Special case: looking for empty string/buffer always fails | |
if (val.length === 0) { | |
return -1 | |
} | |
return arrayIndexOf(buffer, val, byteOffset, encoding, dir) | |
} else if (typeof val === 'number') { | |
val = val & 0xFF // Search for a byte value [0-255] | |
if (typeof Uint8Array.prototype.indexOf === 'function') { | |
if (dir) { | |
return Uint8Array.prototype.indexOf.call(buffer, val, byteOffset) | |
} else { | |
return Uint8Array.prototype.lastIndexOf.call(buffer, val, byteOffset) | |
} | |
} | |
return arrayIndexOf(buffer, [val], byteOffset, encoding, dir) | |
} | |
throw new TypeError('val must be string, number or Buffer') | |
} | |
function arrayIndexOf (arr, val, byteOffset, encoding, dir) { | |
var indexSize = 1 | |
var arrLength = arr.length | |
var valLength = val.length | |
if (encoding !== undefined) { | |
encoding = String(encoding).toLowerCase() | |
if (encoding === 'ucs2' || encoding === 'ucs-2' || | |
encoding === 'utf16le' || encoding === 'utf-16le') { | |
if (arr.length < 2 || val.length < 2) { | |
return -1 | |
} | |
indexSize = 2 | |
arrLength /= 2 | |
valLength /= 2 | |
byteOffset /= 2 | |
} | |
} | |
function read (buf, i) { | |
if (indexSize === 1) { | |
return buf[i] | |
} else { | |
return buf.readUInt16BE(i * indexSize) | |
} | |
} | |
var i | |
if (dir) { | |
var foundIndex = -1 | |
for (i = byteOffset; i < arrLength; i++) { | |
if (read(arr, i) === read(val, foundIndex === -1 ? 0 : i - foundIndex)) { | |
if (foundIndex === -1) foundIndex = i | |
if (i - foundIndex + 1 === valLength) return foundIndex * indexSize | |
} else { | |
if (foundIndex !== -1) i -= i - foundIndex | |
foundIndex = -1 | |
} | |
} | |
} else { | |
if (byteOffset + valLength > arrLength) byteOffset = arrLength - valLength | |
for (i = byteOffset; i >= 0; i--) { | |
var found = true | |
for (var j = 0; j < valLength; j++) { | |
if (read(arr, i + j) !== read(val, j)) { | |
found = false | |
break | |
} | |
} | |
if (found) return i | |
} | |
} | |
return -1 | |
} | |
Buffer.prototype.includes = function includes (val, byteOffset, encoding) { | |
return this.indexOf(val, byteOffset, encoding) !== -1 | |
} | |
Buffer.prototype.indexOf = function indexOf (val, byteOffset, encoding) { | |
return bidirectionalIndexOf(this, val, byteOffset, encoding, true) | |
} | |
Buffer.prototype.lastIndexOf = function lastIndexOf (val, byteOffset, encoding) { | |
return bidirectionalIndexOf(this, val, byteOffset, encoding, false) | |
} | |
function hexWrite (buf, string, offset, length) { | |
offset = Number(offset) || 0 | |
var remaining = buf.length - offset | |
if (!length) { | |
length = remaining | |
} else { | |
length = Number(length) | |
if (length > remaining) { | |
length = remaining | |
} | |
} | |
var strLen = string.length | |
if (length > strLen / 2) { | |
length = strLen / 2 | |
} | |
for (var i = 0; i < length; ++i) { | |
var parsed = parseInt(string.substr(i * 2, 2), 16) | |
if (numberIsNaN(parsed)) return i | |
buf[offset + i] = parsed | |
} | |
return i | |
} | |
function utf8Write (buf, string, offset, length) { | |
return blitBuffer(utf8ToBytes(string, buf.length - offset), buf, offset, length) | |
} | |
function asciiWrite (buf, string, offset, length) { | |
return blitBuffer(asciiToBytes(string), buf, offset, length) | |
} | |
function latin1Write (buf, string, offset, length) { | |
return asciiWrite(buf, string, offset, length) | |
} | |
function base64Write (buf, string, offset, length) { | |
return blitBuffer(base64ToBytes(string), buf, offset, length) | |
} | |
function ucs2Write (buf, string, offset, length) { | |
return blitBuffer(utf16leToBytes(string, buf.length - offset), buf, offset, length) | |
} | |
Buffer.prototype.write = function write (string, offset, length, encoding) { | |
// Buffer#write(string) | |
if (offset === undefined) { | |
encoding = 'utf8' | |
length = this.length | |
offset = 0 | |
// Buffer#write(string, encoding) | |
} else if (length === undefined && typeof offset === 'string') { | |
encoding = offset | |
length = this.length | |
offset = 0 | |
// Buffer#write(string, offset[, length][, encoding]) | |
} else if (isFinite(offset)) { | |
offset = offset >>> 0 | |
if (isFinite(length)) { | |
length = length >>> 0 | |
if (encoding === undefined) encoding = 'utf8' | |
} else { | |
encoding = length | |
length = undefined | |
} | |
} else { | |
throw new Error( | |
'Buffer.write(string, encoding, offset[, length]) is no longer supported' | |
) | |
} | |
var remaining = this.length - offset | |
if (length === undefined || length > remaining) length = remaining | |
if ((string.length > 0 && (length < 0 || offset < 0)) || offset > this.length) { | |
throw new RangeError('Attempt to write outside buffer bounds') | |
} | |
if (!encoding) encoding = 'utf8' | |
var loweredCase = false | |
for (;;) { | |
switch (encoding) { | |
case 'hex': | |
return hexWrite(this, string, offset, length) | |
case 'utf8': | |
case 'utf-8': | |
return utf8Write(this, string, offset, length) | |
case 'ascii': | |
return asciiWrite(this, string, offset, length) | |
case 'latin1': | |
case 'binary': | |
return latin1Write(this, string, offset, length) | |
case 'base64': | |
// Warning: maxLength not taken into account in base64Write | |
return base64Write(this, string, offset, length) | |
case 'ucs2': | |
case 'ucs-2': | |
case 'utf16le': | |
case 'utf-16le': | |
return ucs2Write(this, string, offset, length) | |
default: | |
if (loweredCase) throw new TypeError('Unknown encoding: ' + encoding) | |
encoding = ('' + encoding).toLowerCase() | |
loweredCase = true | |
} | |
} | |
} | |
Buffer.prototype.toJSON = function toJSON () { | |
return { | |
type: 'Buffer', | |
data: Array.prototype.slice.call(this._arr || this, 0) | |
} | |
} | |
function base64Slice (buf, start, end) { | |
if (start === 0 && end === buf.length) { | |
return base64.fromByteArray(buf) | |
} else { | |
return base64.fromByteArray(buf.slice(start, end)) | |
} | |
} | |
function utf8Slice (buf, start, end) { | |
end = Math.min(buf.length, end) | |
var res = [] | |
var i = start | |
while (i < end) { | |
var firstByte = buf[i] | |
var codePoint = null | |
var bytesPerSequence = (firstByte > 0xEF) ? 4 | |
: (firstByte > 0xDF) ? 3 | |
: (firstByte > 0xBF) ? 2 | |
: 1 | |
if (i + bytesPerSequence <= end) { | |
var secondByte, thirdByte, fourthByte, tempCodePoint | |
switch (bytesPerSequence) { | |
case 1: | |
if (firstByte < 0x80) { | |
codePoint = firstByte | |
} | |
break | |
case 2: | |
secondByte = buf[i + 1] | |
if ((secondByte & 0xC0) === 0x80) { | |
tempCodePoint = (firstByte & 0x1F) << 0x6 | (secondByte & 0x3F) | |
if (tempCodePoint > 0x7F) { | |
codePoint = tempCodePoint | |
} | |
} | |
break | |
case 3: | |
secondByte = buf[i + 1] | |
thirdByte = buf[i + 2] | |
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80) { | |
tempCodePoint = (firstByte & 0xF) << 0xC | (secondByte & 0x3F) << 0x6 | (thirdByte & 0x3F) | |
if (tempCodePoint > 0x7FF && (tempCodePoint < 0xD800 || tempCodePoint > 0xDFFF)) { | |
codePoint = tempCodePoint | |
} | |
} | |
break | |
case 4: | |
secondByte = buf[i + 1] | |
thirdByte = buf[i + 2] | |
fourthByte = buf[i + 3] | |
if ((secondByte & 0xC0) === 0x80 && (thirdByte & 0xC0) === 0x80 && (fourthByte & 0xC0) === 0x80) { | |
tempCodePoint = (firstByte & 0xF) << 0x12 | (secondByte & 0x3F) << 0xC | (thirdByte & 0x3F) << 0x6 | (fourthByte & 0x3F) | |
if (tempCodePoint > 0xFFFF && tempCodePoint < 0x110000) { | |
codePoint = tempCodePoint | |
} | |
} | |
} | |
} | |
if (codePoint === null) { | |
// we did not generate a valid codePoint so insert a | |
// replacement char (U+FFFD) and advance only 1 byte | |
codePoint = 0xFFFD | |
bytesPerSequence = 1 | |
} else if (codePoint > 0xFFFF) { | |
// encode to utf16 (surrogate pair dance) | |
codePoint -= 0x10000 | |
res.push(codePoint >>> 10 & 0x3FF | 0xD800) | |
codePoint = 0xDC00 | codePoint & 0x3FF | |
} | |
res.push(codePoint) | |
i += bytesPerSequence | |
} | |
return decodeCodePointsArray(res) | |
} | |
// Based on http://stackoverflow.com/a/22747272/680742, the browser with | |
// the lowest limit is Chrome, with 0x10000 args. | |
// We go 1 magnitude less, for safety | |
var MAX_ARGUMENTS_LENGTH = 0x1000 | |
function decodeCodePointsArray (codePoints) { | |
var len = codePoints.length | |
if (len <= MAX_ARGUMENTS_LENGTH) { | |
return String.fromCharCode.apply(String, codePoints) // avoid extra slice() | |
} | |
// Decode in chunks to avoid "call stack size exceeded". | |
var res = '' | |
var i = 0 | |
while (i < len) { | |
res += String.fromCharCode.apply( | |
String, | |
codePoints.slice(i, i += MAX_ARGUMENTS_LENGTH) | |
) | |
} | |
return res | |
} | |
function asciiSlice (buf, start, end) { | |
var ret = '' | |
end = Math.min(buf.length, end) | |
for (var i = start; i < end; ++i) { | |
ret += String.fromCharCode(buf[i] & 0x7F) | |
} | |
return ret | |
} | |
function latin1Slice (buf, start, end) { | |
var ret = '' | |
end = Math.min(buf.length, end) | |
for (var i = start; i < end; ++i) { | |
ret += String.fromCharCode(buf[i]) | |
} | |
return ret | |
} | |
function hexSlice (buf, start, end) { | |
var len = buf.length | |
if (!start || start < 0) start = 0 | |
if (!end || end < 0 || end > len) end = len | |
var out = '' | |
for (var i = start; i < end; ++i) { | |
out += hexSliceLookupTable[buf[i]] | |
} | |
return out | |
} | |
function utf16leSlice (buf, start, end) { | |
var bytes = buf.slice(start, end) | |
var res = '' | |
for (var i = 0; i < bytes.length; i += 2) { | |
res += String.fromCharCode(bytes[i] + (bytes[i + 1] * 256)) | |
} | |
return res | |
} | |
Buffer.prototype.slice = function slice (start, end) { | |
var len = this.length | |
start = ~~start | |
end = end === undefined ? len : ~~end | |
if (start < 0) { | |
start += len | |
if (start < 0) start = 0 | |
} else if (start > len) { | |
start = len | |
} | |
if (end < 0) { | |
end += len | |
if (end < 0) end = 0 | |
} else if (end > len) { | |
end = len | |
} | |
if (end < start) end = start | |
var newBuf = this.subarray(start, end) | |
// Return an augmented `Uint8Array` instance | |
Object.setPrototypeOf(newBuf, Buffer.prototype) | |
return newBuf | |
} | |
/* | |
* Need to make sure that buffer isn't trying to write out of bounds. | |
*/ | |
function checkOffset (offset, ext, length) { | |
if ((offset % 1) !== 0 || offset < 0) throw new RangeError('offset is not uint') | |
if (offset + ext > length) throw new RangeError('Trying to access beyond buffer length') | |
} | |
Buffer.prototype.readUIntLE = function readUIntLE (offset, byteLength, noAssert) { | |
offset = offset >>> 0 | |
byteLength = byteLength >>> 0 | |
if (!noAssert) checkOffset(offset, byteLength, this.length) | |
var val = this[offset] | |
var mul = 1 | |
var i = 0 | |
while (++i < byteLength && (mul *= 0x100)) { | |
val += this[offset + i] * mul | |
} | |
return val | |
} | |
Buffer.prototype.readUIntBE = function readUIntBE (offset, byteLength, noAssert) { | |
offset = offset >>> 0 | |
byteLength = byteLength >>> 0 | |
if (!noAssert) { | |
checkOffset(offset, byteLength, this.length) | |
} | |
var val = this[offset + --byteLength] | |
var mul = 1 | |
while (byteLength > 0 && (mul *= 0x100)) { | |
val += this[offset + --byteLength] * mul | |
} | |
return val | |
} | |
Buffer.prototype.readUInt8 = function readUInt8 (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 1, this.length) | |
return this[offset] | |
} | |
Buffer.prototype.readUInt16LE = function readUInt16LE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 2, this.length) | |
return this[offset] | (this[offset + 1] << 8) | |
} | |
Buffer.prototype.readUInt16BE = function readUInt16BE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 2, this.length) | |
return (this[offset] << 8) | this[offset + 1] | |
} | |
Buffer.prototype.readUInt32LE = function readUInt32LE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 4, this.length) | |
return ((this[offset]) | | |
(this[offset + 1] << 8) | | |
(this[offset + 2] << 16)) + | |
(this[offset + 3] * 0x1000000) | |
} | |
Buffer.prototype.readUInt32BE = function readUInt32BE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 4, this.length) | |
return (this[offset] * 0x1000000) + | |
((this[offset + 1] << 16) | | |
(this[offset + 2] << 8) | | |
this[offset + 3]) | |
} | |
Buffer.prototype.readIntLE = function readIntLE (offset, byteLength, noAssert) { | |
offset = offset >>> 0 | |
byteLength = byteLength >>> 0 | |
if (!noAssert) checkOffset(offset, byteLength, this.length) | |
var val = this[offset] | |
var mul = 1 | |
var i = 0 | |
while (++i < byteLength && (mul *= 0x100)) { | |
val += this[offset + i] * mul | |
} | |
mul *= 0x80 | |
if (val >= mul) val -= Math.pow(2, 8 * byteLength) | |
return val | |
} | |
Buffer.prototype.readIntBE = function readIntBE (offset, byteLength, noAssert) { | |
offset = offset >>> 0 | |
byteLength = byteLength >>> 0 | |
if (!noAssert) checkOffset(offset, byteLength, this.length) | |
var i = byteLength | |
var mul = 1 | |
var val = this[offset + --i] | |
while (i > 0 && (mul *= 0x100)) { | |
val += this[offset + --i] * mul | |
} | |
mul *= 0x80 | |
if (val >= mul) val -= Math.pow(2, 8 * byteLength) | |
return val | |
} | |
Buffer.prototype.readInt8 = function readInt8 (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 1, this.length) | |
if (!(this[offset] & 0x80)) return (this[offset]) | |
return ((0xff - this[offset] + 1) * -1) | |
} | |
Buffer.prototype.readInt16LE = function readInt16LE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 2, this.length) | |
var val = this[offset] | (this[offset + 1] << 8) | |
return (val & 0x8000) ? val | 0xFFFF0000 : val | |
} | |
Buffer.prototype.readInt16BE = function readInt16BE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 2, this.length) | |
var val = this[offset + 1] | (this[offset] << 8) | |
return (val & 0x8000) ? val | 0xFFFF0000 : val | |
} | |
Buffer.prototype.readInt32LE = function readInt32LE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 4, this.length) | |
return (this[offset]) | | |
(this[offset + 1] << 8) | | |
(this[offset + 2] << 16) | | |
(this[offset + 3] << 24) | |
} | |
Buffer.prototype.readInt32BE = function readInt32BE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 4, this.length) | |
return (this[offset] << 24) | | |
(this[offset + 1] << 16) | | |
(this[offset + 2] << 8) | | |
(this[offset + 3]) | |
} | |
Buffer.prototype.readFloatLE = function readFloatLE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 4, this.length) | |
return ieee754.read(this, offset, true, 23, 4) | |
} | |
Buffer.prototype.readFloatBE = function readFloatBE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 4, this.length) | |
return ieee754.read(this, offset, false, 23, 4) | |
} | |
Buffer.prototype.readDoubleLE = function readDoubleLE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 8, this.length) | |
return ieee754.read(this, offset, true, 52, 8) | |
} | |
Buffer.prototype.readDoubleBE = function readDoubleBE (offset, noAssert) { | |
offset = offset >>> 0 | |
if (!noAssert) checkOffset(offset, 8, this.length) | |
return ieee754.read(this, offset, false, 52, 8) | |
} | |
function checkInt (buf, value, offset, ext, max, min) { | |
if (!Buffer.isBuffer(buf)) throw new TypeError('"buffer" argument must be a Buffer instance') | |
if (value > max || value < min) throw new RangeError('"value" argument is out of bounds') | |
if (offset + ext > buf.length) throw new RangeError('Index out of range') | |
} | |
Buffer.prototype.writeUIntLE = function writeUIntLE (value, offset, byteLength, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
byteLength = byteLength >>> 0 | |
if (!noAssert) { | |
var maxBytes = Math.pow(2, 8 * byteLength) - 1 | |
checkInt(this, value, offset, byteLength, maxBytes, 0) | |
} | |
var mul = 1 | |
var i = 0 | |
this[offset] = value & 0xFF | |
while (++i < byteLength && (mul *= 0x100)) { | |
this[offset + i] = (value / mul) & 0xFF | |
} | |
return offset + byteLength | |
} | |
Buffer.prototype.writeUIntBE = function writeUIntBE (value, offset, byteLength, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
byteLength = byteLength >>> 0 | |
if (!noAssert) { | |
var maxBytes = Math.pow(2, 8 * byteLength) - 1 | |
checkInt(this, value, offset, byteLength, maxBytes, 0) | |
} | |
var i = byteLength - 1 | |
var mul = 1 | |
this[offset + i] = value & 0xFF | |
while (--i >= 0 && (mul *= 0x100)) { | |
this[offset + i] = (value / mul) & 0xFF | |
} | |
return offset + byteLength | |
} | |
Buffer.prototype.writeUInt8 = function writeUInt8 (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 1, 0xff, 0) | |
this[offset] = (value & 0xff) | |
return offset + 1 | |
} | |
Buffer.prototype.writeUInt16LE = function writeUInt16LE (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) | |
this[offset] = (value & 0xff) | |
this[offset + 1] = (value >>> 8) | |
return offset + 2 | |
} | |
Buffer.prototype.writeUInt16BE = function writeUInt16BE (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 2, 0xffff, 0) | |
this[offset] = (value >>> 8) | |
this[offset + 1] = (value & 0xff) | |
return offset + 2 | |
} | |
Buffer.prototype.writeUInt32LE = function writeUInt32LE (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) | |
this[offset + 3] = (value >>> 24) | |
this[offset + 2] = (value >>> 16) | |
this[offset + 1] = (value >>> 8) | |
this[offset] = (value & 0xff) | |
return offset + 4 | |
} | |
Buffer.prototype.writeUInt32BE = function writeUInt32BE (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 4, 0xffffffff, 0) | |
this[offset] = (value >>> 24) | |
this[offset + 1] = (value >>> 16) | |
this[offset + 2] = (value >>> 8) | |
this[offset + 3] = (value & 0xff) | |
return offset + 4 | |
} | |
Buffer.prototype.writeIntLE = function writeIntLE (value, offset, byteLength, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) { | |
var limit = Math.pow(2, (8 * byteLength) - 1) | |
checkInt(this, value, offset, byteLength, limit - 1, -limit) | |
} | |
var i = 0 | |
var mul = 1 | |
var sub = 0 | |
this[offset] = value & 0xFF | |
while (++i < byteLength && (mul *= 0x100)) { | |
if (value < 0 && sub === 0 && this[offset + i - 1] !== 0) { | |
sub = 1 | |
} | |
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF | |
} | |
return offset + byteLength | |
} | |
Buffer.prototype.writeIntBE = function writeIntBE (value, offset, byteLength, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) { | |
var limit = Math.pow(2, (8 * byteLength) - 1) | |
checkInt(this, value, offset, byteLength, limit - 1, -limit) | |
} | |
var i = byteLength - 1 | |
var mul = 1 | |
var sub = 0 | |
this[offset + i] = value & 0xFF | |
while (--i >= 0 && (mul *= 0x100)) { | |
if (value < 0 && sub === 0 && this[offset + i + 1] !== 0) { | |
sub = 1 | |
} | |
this[offset + i] = ((value / mul) >> 0) - sub & 0xFF | |
} | |
return offset + byteLength | |
} | |
Buffer.prototype.writeInt8 = function writeInt8 (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 1, 0x7f, -0x80) | |
if (value < 0) value = 0xff + value + 1 | |
this[offset] = (value & 0xff) | |
return offset + 1 | |
} | |
Buffer.prototype.writeInt16LE = function writeInt16LE (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) | |
this[offset] = (value & 0xff) | |
this[offset + 1] = (value >>> 8) | |
return offset + 2 | |
} | |
Buffer.prototype.writeInt16BE = function writeInt16BE (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 2, 0x7fff, -0x8000) | |
this[offset] = (value >>> 8) | |
this[offset + 1] = (value & 0xff) | |
return offset + 2 | |
} | |
Buffer.prototype.writeInt32LE = function writeInt32LE (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) | |
this[offset] = (value & 0xff) | |
this[offset + 1] = (value >>> 8) | |
this[offset + 2] = (value >>> 16) | |
this[offset + 3] = (value >>> 24) | |
return offset + 4 | |
} | |
Buffer.prototype.writeInt32BE = function writeInt32BE (value, offset, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) checkInt(this, value, offset, 4, 0x7fffffff, -0x80000000) | |
if (value < 0) value = 0xffffffff + value + 1 | |
this[offset] = (value >>> 24) | |
this[offset + 1] = (value >>> 16) | |
this[offset + 2] = (value >>> 8) | |
this[offset + 3] = (value & 0xff) | |
return offset + 4 | |
} | |
function checkIEEE754 (buf, value, offset, ext, max, min) { | |
if (offset + ext > buf.length) throw new RangeError('Index out of range') | |
if (offset < 0) throw new RangeError('Index out of range') | |
} | |
function writeFloat (buf, value, offset, littleEndian, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) { | |
checkIEEE754(buf, value, offset, 4, 3.4028234663852886e+38, -3.4028234663852886e+38) | |
} | |
ieee754.write(buf, value, offset, littleEndian, 23, 4) | |
return offset + 4 | |
} | |
Buffer.prototype.writeFloatLE = function writeFloatLE (value, offset, noAssert) { | |
return writeFloat(this, value, offset, true, noAssert) | |
} | |
Buffer.prototype.writeFloatBE = function writeFloatBE (value, offset, noAssert) { | |
return writeFloat(this, value, offset, false, noAssert) | |
} | |
function writeDouble (buf, value, offset, littleEndian, noAssert) { | |
value = +value | |
offset = offset >>> 0 | |
if (!noAssert) { | |
checkIEEE754(buf, value, offset, 8, 1.7976931348623157E+308, -1.7976931348623157E+308) | |
} | |
ieee754.write(buf, value, offset, littleEndian, 52, 8) | |
return offset + 8 | |
} | |
Buffer.prototype.writeDoubleLE = function writeDoubleLE (value, offset, noAssert) { | |
return writeDouble(this, value, offset, true, noAssert) | |
} | |
Buffer.prototype.writeDoubleBE = function writeDoubleBE (value, offset, noAssert) { | |
return writeDouble(this, value, offset, false, noAssert) | |
} | |
// copy(targetBuffer, targetStart=0, sourceStart=0, sourceEnd=buffer.length) | |
Buffer.prototype.copy = function copy (target, targetStart, start, end) { | |
if (!Buffer.isBuffer(target)) throw new TypeError('argument should be a Buffer') | |
if (!start) start = 0 | |
if (!end && end !== 0) end = this.length | |
if (targetStart >= target.length) targetStart = target.length | |
if (!targetStart) targetStart = 0 | |
if (end > 0 && end < start) end = start | |
// Copy 0 bytes; we're done | |
if (end === start) return 0 | |
if (target.length === 0 || this.length === 0) return 0 | |
// Fatal error conditions | |
if (targetStart < 0) { | |
throw new RangeError('targetStart out of bounds') | |
} | |
if (start < 0 || start >= this.length) throw new RangeError('Index out of range') | |
if (end < 0) throw new RangeError('sourceEnd out of bounds') | |
// Are we oob? | |
if (end > this.length) end = this.length | |
if (target.length - targetStart < end - start) { | |
end = target.length - targetStart + start | |
} | |
var len = end - start | |
if (this === target && typeof Uint8Array.prototype.copyWithin === 'function') { | |
// Use built-in when available, missing from IE11 | |
this.copyWithin(targetStart, start, end) | |
} else if (this === target && start < targetStart && targetStart < end) { | |
// descending copy from end | |
for (var i = len - 1; i >= 0; --i) { | |
target[i + targetStart] = this[i + start] | |
} | |
} else { | |
Uint8Array.prototype.set.call( | |
target, | |
this.subarray(start, end), | |
targetStart | |
) | |
} | |
return len | |
} | |
// Usage: | |
// buffer.fill(number[, offset[, end]]) | |
// buffer.fill(buffer[, offset[, end]]) | |
// buffer.fill(string[, offset[, end]][, encoding]) | |
Buffer.prototype.fill = function fill (val, start, end, encoding) { | |
// Handle string cases: | |
if (typeof val === 'string') { | |
if (typeof start === 'string') { | |
encoding = start | |
start = 0 | |
end = this.length | |
} else if (typeof end === 'string') { | |
encoding = end | |
end = this.length | |
} | |
if (encoding !== undefined && typeof encoding !== 'string') { | |
throw new TypeError('encoding must be a string') | |
} | |
if (typeof encoding === 'string' && !Buffer.isEncoding(encoding)) { | |
throw new TypeError('Unknown encoding: ' + encoding) | |
} | |
if (val.length === 1) { | |
var code = val.charCodeAt(0) | |
if ((encoding === 'utf8' && code < 128) || | |
encoding === 'latin1') { | |
// Fast path: If `val` fits into a single byte, use that numeric value. | |
val = code | |
} | |
} | |
} else if (typeof val === 'number') { | |
val = val & 255 | |
} else if (typeof val === 'boolean') { | |
val = Number(val) | |
} | |
// Invalid ranges are not set to a default, so can range check early. | |
if (start < 0 || this.length < start || this.length < end) { | |
throw new RangeError('Out of range index') | |
} | |
if (end <= start) { | |
return this | |
} | |
start = start >>> 0 | |
end = end === undefined ? this.length : end >>> 0 | |
if (!val) val = 0 | |
var i | |
if (typeof val === 'number') { | |
for (i = start; i < end; ++i) { | |
this[i] = val | |
} | |
} else { | |
var bytes = Buffer.isBuffer(val) | |
? val | |
: Buffer.from(val, encoding) | |
var len = bytes.length | |
if (len === 0) { | |
throw new TypeError('The value "' + val + | |
'" is invalid for argument "value"') | |
} | |
for (i = 0; i < end - start; ++i) { | |
this[i + start] = bytes[i % len] | |
} | |
} | |
return this | |
} | |
// HELPER FUNCTIONS | |
// ================ | |
var INVALID_BASE64_RE = /[^+/0-9A-Za-z-_]/g | |
function base64clean (str) { | |
// Node takes equal signs as end of the Base64 encoding | |
str = str.split('=')[0] | |
// Node strips out invalid characters like \n and \t from the string, base64-js does not | |
str = str.trim().replace(INVALID_BASE64_RE, '') | |
// Node converts strings with length < 2 to '' | |
if (str.length < 2) return '' | |
// Node allows for non-padded base64 strings (missing trailing ===), base64-js does not | |
while (str.length % 4 !== 0) { | |
str = str + '=' | |
} | |
return str | |
} | |
function utf8ToBytes (string, units) { | |
units = units || Infinity | |
var codePoint | |
var length = string.length | |
var leadSurrogate = null | |
var bytes = [] | |
for (var i = 0; i < length; ++i) { | |
codePoint = string.charCodeAt(i) | |
// is surrogate component | |
if (codePoint > 0xD7FF && codePoint < 0xE000) { | |
// last char was a lead | |
if (!leadSurrogate) { | |
// no lead yet | |
if (codePoint > 0xDBFF) { | |
// unexpected trail | |
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) | |
continue | |
} else if (i + 1 === length) { | |
// unpaired lead | |
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) | |
continue | |
} | |
// valid lead | |
leadSurrogate = codePoint | |
continue | |
} | |
// 2 leads in a row | |
if (codePoint < 0xDC00) { | |
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) | |
leadSurrogate = codePoint | |
continue | |
} | |
// valid surrogate pair | |
codePoint = (leadSurrogate - 0xD800 << 10 | codePoint - 0xDC00) + 0x10000 | |
} else if (leadSurrogate) { | |
// valid bmp char, but last char was a lead | |
if ((units -= 3) > -1) bytes.push(0xEF, 0xBF, 0xBD) | |
} | |
leadSurrogate = null | |
// encode utf8 | |
if (codePoint < 0x80) { | |
if ((units -= 1) < 0) break | |
bytes.push(codePoint) | |
} else if (codePoint < 0x800) { | |
if ((units -= 2) < 0) break | |
bytes.push( | |
codePoint >> 0x6 | 0xC0, | |
codePoint & 0x3F | 0x80 | |
) | |
} else if (codePoint < 0x10000) { | |
if ((units -= 3) < 0) break | |
bytes.push( | |
codePoint >> 0xC | 0xE0, | |
codePoint >> 0x6 & 0x3F | 0x80, | |
codePoint & 0x3F | 0x80 | |
) | |
} else if (codePoint < 0x110000) { | |
if ((units -= 4) < 0) break | |
bytes.push( | |
codePoint >> 0x12 | 0xF0, | |
codePoint >> 0xC & 0x3F | 0x80, | |
codePoint >> 0x6 & 0x3F | 0x80, | |
codePoint & 0x3F | 0x80 | |
) | |
} else { | |
throw new Error('Invalid code point') | |
} | |
} | |
return bytes | |
} | |
function asciiToBytes (str) { | |
var byteArray = [] | |
for (var i = 0; i < str.length; ++i) { | |
// Node's code seems to be doing this and not & 0x7F.. | |
byteArray.push(str.charCodeAt(i) & 0xFF) | |
} | |
return byteArray | |
} | |
function utf16leToBytes (str, units) { | |
var c, hi, lo | |
var byteArray = [] | |
for (var i = 0; i < str.length; ++i) { | |
if ((units -= 2) < 0) break | |
c = str.charCodeAt(i) | |
hi = c >> 8 | |
lo = c % 256 | |
byteArray.push(lo) | |
byteArray.push(hi) | |
} | |
return byteArray | |
} | |
function base64ToBytes (str) { | |
return base64.toByteArray(base64clean(str)) | |
} | |
function blitBuffer (src, dst, offset, length) { | |
for (var i = 0; i < length; ++i) { | |
if ((i + offset >= dst.length) || (i >= src.length)) break | |
dst[i + offset] = src[i] | |
} | |
return i | |
} | |
// ArrayBuffer or Uint8Array objects from other contexts (i.e. iframes) do not pass | |
// the `instanceof` check but they should be treated as of that type. | |
// See: https://github.com/feross/buffer/issues/166 | |
function isInstance (obj, type) { | |
return obj instanceof type || | |
(obj != null && obj.constructor != null && obj.constructor.name != null && | |
obj.constructor.name === type.name) | |
} | |
function numberIsNaN (obj) { | |
// For IE11 support | |
return obj !== obj // eslint-disable-line no-self-compare | |
} | |
// Create lookup table for `toString('hex')` | |
// See: https://github.com/feross/buffer/issues/219 | |
var hexSliceLookupTable = (function () { | |
var alphabet = '0123456789abcdef' | |
var table = new Array(256) | |
for (var i = 0; i < 16; ++i) { | |
var i16 = i * 16 | |
for (var j = 0; j < 16; ++j) { | |
table[i16 + j] = alphabet[i] + alphabet[j] | |
} | |
} | |
return table | |
})() | |
}).call(this,require("buffer").Buffer) | |
},{"base64-js":5,"buffer":8,"ieee754":31}],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`. | |
*/ | |
if (typeof module !== 'undefined') { | |
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; | |
}; | |
},{}],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){ | |
(function (process){ | |
/* eslint-env browser */ | |
/** | |
* This is the web browser implementation of `debug()`. | |
*/ | |
exports.log = log; | |
exports.formatArgs = formatArgs; | |
exports.save = save; | |
exports.load = load; | |
exports.useColors = useColors; | |
exports.storage = localstorage(); | |
/** | |
* Colors. | |
*/ | |
exports.colors = [ | |
'#0000CC', | |
'#0000FF', | |
'#0033CC', | |
'#0033FF', | |
'#0066CC', | |
'#0066FF', | |
'#0099CC', | |
'#0099FF', | |
'#00CC00', | |
'#00CC33', | |
'#00CC66', | |
'#00CC99', | |
'#00CCCC', | |
'#00CCFF', | |
'#3300CC', | |
'#3300FF', | |
'#3333CC', | |
'#3333FF', | |
'#3366CC', | |
'#3366FF', | |
'#3399CC', | |
'#3399FF', | |
'#33CC00', | |
'#33CC33', | |
'#33CC66', | |
'#33CC99', | |
'#33CCCC', | |
'#33CCFF', | |
'#6600CC', | |
'#6600FF', | |
'#6633CC', | |
'#6633FF', | |
'#66CC00', | |
'#66CC33', | |
'#9900CC', | |
'#9900FF', | |
'#9933CC', | |
'#9933FF', | |
'#99CC00', | |
'#99CC33', | |
'#CC0000', | |
'#CC0033', | |
'#CC0066', | |
'#CC0099', | |
'#CC00CC', | |
'#CC00FF', | |
'#CC3300', | |
'#CC3333', | |
'#CC3366', | |
'#CC3399', | |
'#CC33CC', | |
'#CC33FF', | |
'#CC6600', | |
'#CC6633', | |
'#CC9900', | |
'#CC9933', | |
'#CCCC00', | |
'#CCCC33', | |
'#FF0000', | |
'#FF0033', | |
'#FF0066', | |
'#FF0099', | |
'#FF00CC', | |
'#FF00FF', | |
'#FF3300', | |
'#FF3333', | |
'#FF3366', | |
'#FF3399', | |
'#FF33CC', | |
'#FF33FF', | |
'#FF6600', | |
'#FF6633', | |
'#FF9900', | |
'#FF9933', | |
'#FFCC00', | |
'#FFCC33' | |
]; | |
/** | |
* 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 | |
*/ | |
// eslint-disable-next-line complexity | |
function useColors() { | |
// NB: In an Electron preload script, document will be defined but not fully | |
// initialized. Since we know we're in Chrome, we'll just detect this case | |
// explicitly | |
if (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) { | |
return true; | |
} | |
// Internet Explorer and Edge do not support colors. | |
if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) { | |
return false; | |
} | |
// Is webkit? http://stackoverflow.com/a/16459606/376773 | |
// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632 | |
return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) || | |
// Is firebug? http://stackoverflow.com/a/398120/376773 | |
(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) || | |
// Is firefox >= v31? | |
// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages | |
(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31) || | |
// Double check webkit in userAgent just in case we are in a worker | |
(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/)); | |
} | |
/** | |
* Colorize log arguments if enabled. | |
* | |
* @api public | |
*/ | |
function formatArgs(args) { | |
args[0] = (this.useColors ? '%c' : '') + | |
this.namespace + | |
(this.useColors ? ' %c' : ' ') + | |
args[0] + | |
(this.useColors ? '%c ' : ' ') + | |
'+' + module.exports.humanize(this.diff); | |
if (!this.useColors) { | |
return; | |
} | |
const c = 'color: ' + this.color; | |
args.splice(1, 0, c, 'color: inherit'); | |
// 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 | |
let index = 0; | |
let lastC = 0; | |
args[0].replace(/%[a-zA-Z%]/g, match => { | |
if (match === '%%') { | |
return; | |
} | |
index++; | |
if (match === '%c') { | |
// We only are interested in the *last* %c | |
// (the user may have provided their own) | |
lastC = index; | |
} | |
}); | |
args.splice(lastC, 0, c); | |
} | |
/** | |
* Invokes `console.log()` when available. | |
* No-op when `console.log` is not a "function". | |
* | |
* @api public | |
*/ | |
function log(...args) { | |
// This hackery is required for IE8/9, where | |
// the `console.log` function doesn't have 'apply' | |
return typeof console === 'object' && | |
console.log && | |
console.log(...args); | |
} | |
/** | |
* Save `namespaces`. | |
* | |
* @param {String} namespaces | |
* @api private | |
*/ | |
function save(namespaces) { | |
try { | |
if (namespaces) { | |
exports.storage.setItem('debug', namespaces); | |
} else { | |
exports.storage.removeItem('debug'); | |
} | |
} catch (error) { | |
// Swallow | |
// XXX (@Qix-) should we be logging these? | |
} | |
} | |
/** | |
* Load `namespaces`. | |
* | |
* @return {String} returns the previously persisted debug modes | |
* @api private | |
*/ | |
function load() { | |
let r; | |
try { | |
r = exports.storage.getItem('debug'); | |
} catch (error) { | |
// Swallow | |
// XXX (@Qix-) should we be logging these? | |
} | |
// If debug isn't set in LS, and we're in Electron, try to load $DEBUG | |
if (!r && typeof process !== 'undefined' && 'env' in process) { | |
r = process.env.DEBUG; | |
} | |
return r; | |
} | |
/** | |
* 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 { | |
// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context | |
// The Browser also has localStorage in the global context. | |
return localStorage; | |
} catch (error) { | |
// Swallow | |
// XXX (@Qix-) should we be logging these? | |
} | |
} | |
module.exports = require('./common')(exports); | |
const {formatters} = module.exports; | |
/** | |
* Map %j to `JSON.stringify()`, since no Web Inspectors do that by default. | |
*/ | |
formatters.j = function (v) { | |
try { | |
return JSON.stringify(v); | |
} catch (error) { | |
return '[UnexpectedJSONParseError]: ' + error.message; | |
} | |
}; | |
}).call(this,require('_process')) | |
},{"./common":13,"_process":37}],13:[function(require,module,exports){ | |
/** | |
* This is the common logic for both the Node.js and web browser | |
* implementations of `debug()`. | |
*/ | |
function setup(env) { | |
createDebug.debug = createDebug; | |
createDebug.default = createDebug; | |
createDebug.coerce = coerce; | |
createDebug.disable = disable; | |
createDebug.enable = enable; | |
createDebug.enabled = enabled; | |
createDebug.humanize = require('ms'); | |
Object.keys(env).forEach(key => { | |
createDebug[key] = env[key]; | |
}); | |
/** | |
* Active `debug` instances. | |
*/ | |
createDebug.instances = []; | |
/** | |
* The currently active debug mode names, and names to skip. | |
*/ | |
createDebug.names = []; | |
createDebug.skips = []; | |
/** | |
* Map of special "%n" handling functions, for the debug "format" argument. | |
* | |
* Valid key names are a single, lower or upper-case letter, i.e. "n" and "N". | |
*/ | |
createDebug.formatters = {}; | |
/** | |
* Selects a color for a debug namespace | |
* @param {String} namespace The namespace string for the for the debug instance to be colored | |
* @return {Number|String} An ANSI color code for the given namespace | |
* @api private | |
*/ | |
function selectColor(namespace) { | |
let hash = 0; | |
for (let i = 0; i < namespace.length; i++) { | |
hash = ((hash << 5) - hash) + namespace.charCodeAt(i); | |
hash |= 0; // Convert to 32bit integer | |
} | |
return createDebug.colors[Math.abs(hash) % createDebug.colors.length]; | |
} | |
createDebug.selectColor = selectColor; | |
/** | |
* Create a debugger with the given `namespace`. | |
* | |
* @param {String} namespace | |
* @return {Function} | |
* @api public | |
*/ | |
function createDebug(namespace) { | |
let prevTime; | |
function debug(...args) { | |
// Disabled? | |
if (!debug.enabled) { | |
return; | |
} | |
const self = debug; | |
// Set `diff` timestamp | |
const curr = Number(new Date()); | |
const ms = curr - (prevTime || curr); | |
self.diff = ms; | |
self.prev = prevTime; | |
self.curr = curr; | |
prevTime = curr; | |
args[0] = createDebug.coerce(args[0]); | |
if (typeof args[0] !== 'string') { | |
// Anything else let's inspect with %O | |
args.unshift('%O'); | |
} | |
// Apply any `formatters` transformations | |
let index = 0; | |
args[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => { | |
// If we encounter an escaped % then don't increase the array index | |
if (match === '%%') { | |
return match; | |
} | |
index++; | |
const formatter = createDebug.formatters[format]; | |
if (typeof formatter === 'function') { | |
const 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; | |
}); | |
// Apply env-specific formatting (colors, etc.) | |
createDebug.formatArgs.call(self, args); | |
const logFn = self.log || createDebug.log; | |
logFn.apply(self, args); | |
} | |
debug.namespace = namespace; | |
debug.enabled = createDebug.enabled(namespace); | |
debug.useColors = createDebug.useColors(); | |
debug.color = selectColor(namespace); | |
debug.destroy = destroy; | |
debug.extend = extend; | |
// Debug.formatArgs = formatArgs; | |
// debug.rawLog = rawLog; | |
// env-specific initialization logic for debug instances | |
if (typeof createDebug.init === 'function') { | |
createDebug.init(debug); | |
} | |
createDebug.instances.push(debug); | |
return debug; | |
} | |
function destroy() { | |
const index = createDebug.instances.indexOf(this); | |
if (index !== -1) { | |
createDebug.instances.splice(index, 1); | |
return true; | |
} | |
return false; | |
} | |
function extend(namespace, delimiter) { | |
const newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace); | |
newDebug.log = this.log; | |
return newDebug; | |
} | |
/** | |
* Enables a debug mode by namespaces. This can include modes | |
* separated by a colon and wildcards. | |
* | |
* @param {String} namespaces | |
* @api public | |
*/ | |
function enable(namespaces) { | |
createDebug.save(namespaces); | |
createDebug.names = []; | |
createDebug.skips = []; | |
let i; | |
const split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/); | |
const len = split.length; | |
for (i = 0; i < len; i++) { | |
if (!split[i]) { | |
// ignore empty strings | |
continue; | |
} | |
namespaces = split[i].replace(/\*/g, '.*?'); | |
if (namespaces[0] === '-') { | |
createDebug.skips.push(new RegExp('^' + namespaces.substr(1) + '$')); | |
} else { | |
createDebug.names.push(new RegExp('^' + namespaces + '$')); | |
} | |
} | |
for (i = 0; i < createDebug.instances.length; i++) { | |
const instance = createDebug.instances[i]; | |
instance.enabled = createDebug.enabled(instance.namespace); | |
} | |
} | |
/** | |
* Disable debug output. | |
* | |
* @return {String} namespaces | |
* @api public | |
*/ | |
function disable() { | |
const namespaces = [ | |
...createDebug.names.map(toNamespace), | |
...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace) | |
].join(','); | |
createDebug.enable(''); | |
return namespaces; | |
} | |
/** | |
* Returns true if the given mode name is enabled, false otherwise. | |
* | |
* @param {String} name | |
* @return {Boolean} | |
* @api public | |
*/ | |
function enabled(name) { | |
if (name[name.length - 1] === '*') { | |
return true; | |
} | |
let i; | |
let len; | |
for (i = 0, len = createDebug.skips.length; i < len; i++) { | |
if (createDebug.skips[i].test(name)) { | |
return false; | |
} | |
} | |
for (i = 0, len = createDebug.names.length; i < len; i++) { | |
if (createDebug.names[i].test(name)) { | |
return true; | |
} | |
} | |
return false; | |
} | |
/** | |
* Convert regexp to namespace | |
* | |
* @param {RegExp} regxep | |
* @return {String} namespace | |
* @api private | |
*/ | |
function toNamespace(regexp) { | |
return regexp.toString() | |
.substring(2, regexp.toString().length - 2) | |
.replace(/\.\*\?$/, '*'); | |
} | |
/** | |
* Coerce `val`. | |
* | |
* @param {Mixed} val | |
* @return {Mixed} | |
* @api private | |
*/ | |
function coerce(val) { | |
if (val instanceof Error) { | |
return val.stack || val.message; | |
} | |
return val; | |
} | |
createDebug.enable(createDebug.load()); | |
return createDebug; | |
} | |
module.exports = setup; | |
},{"ms":34}],14:[function(require,module,exports){ | |
module.exports = require('./socket'); | |
/** | |
* Exports parser | |
* | |
* @api public | |
* | |
*/ | |
module.exports.parser = require('engine.io-parser'); | |
},{"./socket":15,"engine.io-parser":23}],15:[function(require,module,exports){ | |
/** | |
* Module dependencies. | |
*/ | |
var transports = require('./transports/index'); | |
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 parseqs = require('parseqs'); | |
/** | |
* Module exports. | |
*/ | |
module.exports = Socket; | |
/** | |
* 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 | |
: (typeof location !== 'undefined' && '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 || | |
(typeof location !== 'undefined' ? location.hostname : 'localhost'); | |
this.port = opts.port || (typeof location !== 'undefined' && 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.withCredentials = false !== opts.withCredentials; | |
this.timestampParam = opts.timestampParam || 't'; | |
this.timestampRequests = opts.timestampRequests; | |
this.transports = opts.transports || ['polling', 'websocket']; | |
this.transportOptions = opts.transportOptions || {}; | |
this.readyState = ''; | |
this.writeBuffer = []; | |
this.prevBufferLen = 0; | |
this.policyPort = opts.policyPort || 843; | |
this.rememberUpgrade = opts.rememberUpgrade || false; | |
this.binaryType = null; | |
this.onlyBinaryUpgrades = opts.onlyBinaryUpgrades; | |
this.perMessageDeflate = false !== opts.perMessageDeflate ? (opts.perMessageDeflate || {}) : false; | |
if (true === this.perMessageDeflate) this.perMessageDeflate = {}; | |
if (this.perMessageDeflate && null == this.perMessageDeflate.threshold) { | |
this.perMessageDeflate.threshold = 1024; | |
} | |
// SSL options for Node.js client | |
this.pfx = opts.pfx || null; | |
this.key = opts.key || null; | |
this.passphrase = opts.passphrase || null; | |
this.cert = opts.cert || null; | |
this.ca = opts.ca || null; | |
this.ciphers = opts.ciphers || null; | |
this.rejectUnauthorized = opts.rejectUnauthorized === undefined ? true : opts.rejectUnauthorized; | |
this.forceNode = !!opts.forceNode; | |
// detect ReactNative environment | |
this.isReactNative = (typeof navigator !== 'undefined' && typeof navigator.product === 'string' && navigator.product.toLowerCase() === 'reactnative'); | |
// other options for Node.js or ReactNative client | |
if (typeof self === 'undefined' || this.isReactNative) { | |
if (opts.extraHeaders && Object.keys(opts.extraHeaders).length > 0) { | |
this.extraHeaders = opts.extraHeaders; | |
} | |
if (opts.localAddress) { | |
this.localAddress = opts.localAddress; | |
} | |
} | |
// set on handshake | |
this.id = null; | |
this.upgrades = null; | |
this.pingInterval = null; | |
this.pingTimeout = null; | |
// set on heartbeat | |
this.pingIntervalTimer = null; | |
this.pingTimeoutTimer = null; | |
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/index'); | |
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; | |
// per-transport options | |
var options = this.transportOptions[name] || {}; | |
// session id if we already have one | |
if (this.id) query.sid = this.id; | |
var transport = new transports[name]({ | |
query: query, | |
socket: this, | |
agent: options.agent || this.agent, | |
hostname: options.hostname || this.hostname, | |
port: options.port || this.port, | |
secure: options.secure || this.secure, | |
path: options.path || this.path, | |
forceJSONP: options.forceJSONP || this.forceJSONP, | |
jsonp: options.jsonp || this.jsonp, | |
forceBase64: options.forceBase64 || this.forceBase64, | |
enablesXDR: options.enablesXDR || this.enablesXDR, | |
withCredentials: options.withCredentials || this.withCredentials, | |
timestampRequests: options.timestampRequests || this.timestampRequests, | |
timestampParam: options.timestampParam || this.timestampParam, | |
policyPort: options.policyPort || this.policyPort, | |
pfx: options.pfx || this.pfx, | |
key: options.key || this.key, | |
passphrase: options.passphrase || this.passphrase, | |
cert: options.cert || this.cert, | |
ca: options.ca || this.ca, | |
ciphers: options.ciphers || this.ciphers, | |
rejectUnauthorized: options.rejectUnauthorized || this.rejectUnauthorized, | |
perMessageDeflate: options.perMessageDeflate || this.perMessageDeflate, | |
extraHeaders: options.extraHeaders || this.extraHeaders, | |
forceNode: options.forceNode || this.forceNode, | |
localAddress: options.localAddress || this.localAddress, | |
requestTimeout: options.requestTimeout || this.requestTimeout, | |
protocols: options.protocols || void (0), | |
isReactNative: this.isReactNative | |
}); | |
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 }); | |
var failed = false; | |
var 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 || | |
'closing' === 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(JSON.parse(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; | |
}; | |
},{"./transport":16,"./transports/index":17,"component-emitter":10,"debug":12,"engine.io-parser":23,"indexof":32,"parseqs":35,"parseuri":36}],16:[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; | |
this.withCredentials = opts.withCredentials; | |
// 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; | |
this.forceNode = opts.forceNode; | |
// results of ReactNative environment detection | |
this.isReactNative = opts.isReactNative; | |
// other options for Node.js client | |
this.extraHeaders = opts.extraHeaders; | |
this.localAddress = opts.localAddress; | |
} | |
/** | |
* 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":23}],17:[function(require,module,exports){ | |
/** | |
* 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 (typeof location !== 'undefined') { | |
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); | |
} | |
} | |
},{"./polling-jsonp":18,"./polling-xhr":19,"./websocket":21,"xmlhttprequest-ssl":22}],18:[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; | |
/** | |
* Noop. | |
*/ | |
function empty () { } | |
/** | |
* Until https://github.com/tc39/proposal-global is shipped. | |
*/ | |
function glob () { | |
return typeof self !== 'undefined' ? self | |
: typeof window !== 'undefined' ? window | |
: typeof global !== 'undefined' ? global : {}; | |
} | |
/** | |
* 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 | |
var global = glob(); | |
callbacks = global.___eio = (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 (typeof addEventListener === 'function') { | |
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":20,"component-inherit":11}],19:[function(require,module,exports){ | |
/* global attachEvent */ | |
/** | |
* 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); | |
this.requestTimeout = opts.requestTimeout; | |
this.extraHeaders = opts.extraHeaders; | |
if (typeof location !== 'undefined') { | |
var isSSL = 'https:' === location.protocol; | |
var port = location.port; | |
// some user agents have empty `location.port` | |
if (!port) { | |
port = isSSL ? 443 : 80; | |
} | |
this.xd = (typeof location !== 'undefined' && opts.hostname !== location.hostname) || | |
port !== opts.port; | |
this.xs = opts.secure !== isSSL; | |
} | |
} | |
/** | |
* 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; | |
opts.withCredentials = this.withCredentials; | |
// 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; | |
opts.requestTimeout = this.requestTimeout; | |
// 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; | |
this.withCredentials = opts.withCredentials; | |
this.requestTimeout = opts.requestTimeout; | |
// 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 && xhr.setDisableHeaderCheck(true); | |
for (var i in this.extraHeaders) { | |
if (this.extraHeaders.hasOwnProperty(i)) { | |
xhr.setRequestHeader(i, this.extraHeaders[i]); | |
} | |
} | |
} | |
} catch (e) {} | |
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) {} | |
} | |
try { | |
xhr.setRequestHeader('Accept', '*/*'); | |
} catch (e) {} | |
// ie6 check | |
if ('withCredentials' in xhr) { | |
xhr.withCredentials = this.withCredentials; | |
} | |
if (this.requestTimeout) { | |
xhr.timeout = this.requestTimeout; | |
} | |
if (this.hasXDR()) { | |
xhr.onload = function () { | |
self.onLoad(); | |
}; | |
xhr.onerror = function () { | |
self.onError(xhr.responseText); | |
}; | |
} else { | |
xhr.onreadystatechange = function () { | |
if (xhr.readyState === 2) { | |
try { | |
var contentType = xhr.getResponseHeader('Content-Type'); | |
if (self.supportsBinary && contentType === 'application/octet-stream' || contentType === 'application/octet-stream; charset=UTF-8') { | |
xhr.responseType = 'arraybuffer'; | |
} | |
} catch (e) {} | |
} | |
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(typeof xhr.status === 'number' ? xhr.status : 0); | |
}, 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 (typeof document !== 'undefined') { | |
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 (typeof document !== 'undefined') { | |
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'); | |
} catch (e) {} | |
if (contentType === 'application/octet-stream' || contentType === 'application/octet-stream; charset=UTF-8') { | |
data = this.xhr.response || this.xhr.responseText; | |
} else { | |
data = this.xhr.responseText; | |
} | |
} catch (e) { | |
this.onError(e); | |
} | |
if (null != data) { | |
this.onData(data); | |
} | |
}; | |
/** | |
* Check if it has XDomainRequest. | |
* | |
* @api private | |
*/ | |
Request.prototype.hasXDR = function () { | |
return typeof XDomainRequest !== 'undefined' && !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. | |
*/ | |
Request.requestsCount = 0; | |
Request.requests = {}; | |
if (typeof document !== 'undefined') { | |
if (typeof attachEvent === 'function') { | |
attachEvent('onunload', unloadHandler); | |
} else if (typeof addEventListener === 'function') { | |
var terminationEvent = 'onpagehide' in self ? 'pagehide' : 'unload'; | |
addEventListener(terminationEvent, unloadHandler, false); | |
} | |
} | |
function unloadHandler () { | |
for (var i in Request.requests) { | |
if (Request.requests.hasOwnProperty(i)) { | |
Request.requests[i].abort(); | |
} | |
} | |
} | |
},{"./polling":20,"component-emitter":10,"component-inherit":11,"debug":12,"xmlhttprequest-ssl":22}],20:[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 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'); | |
}; | |
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 && Number(this.port) !== 443) || | |
('http' === schema && Number(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":16,"component-inherit":11,"debug":12,"engine.io-parser":23,"parseqs":35,"xmlhttprequest-ssl":22,"yeast":72}],21:[function(require,module,exports){ | |
(function (Buffer){ | |
/** | |
* 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, NodeWebSocket; | |
if (typeof WebSocket !== 'undefined') { | |
BrowserWebSocket = WebSocket; | |
} else if (typeof self !== 'undefined') { | |
BrowserWebSocket = self.WebSocket || self.MozWebSocket; | |
} | |
if (typeof window === 'undefined') { | |
try { | |
NodeWebSocket = require('ws'); | |
} catch (e) { } | |
} | |
/** | |
* 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 WebSocketImpl = BrowserWebSocket || NodeWebSocket; | |
/** | |
* 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; | |
this.usingBrowserWebSocket = BrowserWebSocket && !opts.forceNode; | |
this.protocols = opts.protocols; | |
if (!this.usingBrowserWebSocket) { | |
WebSocketImpl = NodeWebSocket; | |
} | |
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 uri = this.uri(); | |
var protocols = this.protocols; | |
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; | |
} | |
if (this.localAddress) { | |
opts.localAddress = this.localAddress; | |
} | |
try { | |
this.ws = | |
this.usingBrowserWebSocket && !this.isReactNative | |
? protocols | |
? new WebSocketImpl(uri, protocols) | |
: new WebSocketImpl(uri) | |
: new WebSocketImpl(uri, protocols, opts); | |
} catch (err) { | |
return this.emit('error', err); | |
} | |
if (this.ws.binaryType === undefined) { | |
this.supportsBinary = false; | |
} | |
if (this.ws.supports && this.ws.supports.binary) { | |
this.supportsBinary = true; | |
this.ws.binaryType = 'nodebuffer'; | |
} 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); | |
}; | |
}; | |
/** | |
* 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 (!self.usingBrowserWebSocket) { | |
// 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 ? 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 (self.usingBrowserWebSocket) { | |
// 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 && Number(this.port) !== 443) || | |
('ws' === schema && Number(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 !!WebSocketImpl && !('__initialize' in WebSocketImpl && this.name === WS.prototype.name); | |
}; | |
}).call(this,require("buffer").Buffer) | |
},{"../transport":16,"buffer":8,"component-inherit":11,"debug":12,"engine.io-parser":23,"parseqs":35,"ws":7,"yeast":72}],22:[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 self[['Active'].concat('Object').join('X')]('Microsoft.XMLHTTP'); | |
} catch (e) { } | |
} | |
}; | |
},{"has-cors":30}],23:[function(require,module,exports){ | |
/** | |
* Module dependencies. | |
*/ | |
var keys = require('./keys'); | |
var hasBinary = require('has-binary2'); | |
var sliceBuffer = require('arraybuffer.slice'); | |
var after = require('after'); | |
var utf8 = require('./utf8'); | |
var base64encoder; | |
if (typeof ArrayBuffer !== 'undefined') { | |
base64encoder = require('base64-arraybuffer'); | |
} | |
/** | |
* 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 = typeof navigator !== 'undefined' && /Android/i.test(navigator.userAgent); | |
/** | |
* 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 = typeof navigator !== 'undefined' && /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 (typeof supportsBinary === 'function') { | |
callback = supportsBinary; | |
supportsBinary = false; | |
} | |
if (typeof utf8encode === 'function') { | |
callback = utf8encode; | |
utf8encode = null; | |
} | |
var data = (packet.data === undefined) | |
? undefined | |
: packet.data.buffer || packet.data; | |
if (typeof ArrayBuffer !== 'undefined' && data instanceof ArrayBuffer) { | |
return encodeArrayBuffer(packet, supportsBinary, callback); | |
} else if (typeof Blob !== 'undefined' && data instanceof 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), { strict: false }) : 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() { | |
exports.encodePacket({ type: packet.type, data: fr.result }, 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 (typeof Blob !== 'undefined' && packet.data instanceof 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 += 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) { | |
if (data === undefined) { | |
return err; | |
} | |
// String data | |
if (typeof data === 'string') { | |
if (data.charAt(0) === 'b') { | |
return exports.decodeBase64Packet(data.substr(1), binaryType); | |
} | |
if (utf8decode) { | |
data = tryDecode(data); | |
if (data === false) { | |
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 }; | |
}; | |
function tryDecode(data) { | |
try { | |
data = utf8.decode(data, { strict: false }); | |
} catch (e) { | |
return false; | |
} | |
return data; | |
} | |
/** | |
* 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 (!base64encoder) { | |
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, false, 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; | |
continue; | |
} | |
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, false); | |
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 = []; | |
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; | |
// 310 = char length of Number.MAX_VALUE | |
if (msgLength.length > 310) { | |
return callback(err, 0, 1); | |
} | |
msgLength += tailArray[i]; | |
} | |
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); | |
}); | |
}; | |
},{"./keys":24,"./utf8":25,"after":1,"arraybuffer.slice":2,"base64-arraybuffer":4,"blob":6,"has-binary2":28}],24:[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; | |
}; | |
},{}],25:[function(require,module,exports){ | |
/*! https://mths.be/utf8js v2.1.2 by @mathias */ | |
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, strict) { | |
if (codePoint >= 0xD800 && codePoint <= 0xDFFF) { | |
if (strict) { | |
throw Error( | |
'Lone surrogate U+' + codePoint.toString(16).toUpperCase() + | |
' is not a scalar value' | |
); | |
} | |
return false; | |
} | |
return true; | |
} | |
/*--------------------------------------------------------------------------*/ | |
function createByte(codePoint, shift) { | |
return stringFromCharCode(((codePoint >> shift) & 0x3F) | 0x80); | |
} | |
function encodeCodePoint(codePoint, strict) { | |
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 | |
if (!checkScalarValue(codePoint, strict)) { | |
codePoint = 0xFFFD; | |
} | |
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, opts) { | |
opts = opts || {}; | |
var strict = false !== opts.strict; | |
var codePoints = ucs2decode(string); | |
var length = codePoints.length; | |
var index = -1; | |
var codePoint; | |
var byteString = ''; | |
while (++index < length) { | |
codePoint = codePoints[index]; | |
byteString += encodeCodePoint(codePoint, strict); | |
} | |
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(strict) { | |
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) { | |
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) { | |
return checkScalarValue(codePoint, strict) ? codePoint : 0xFFFD; | |
} else { | |
throw Error('Invalid continuation byte'); | |
} | |
} | |
// 4-byte sequence | |
if ((byte1 & 0xF8) == 0xF0) { | |
byte2 = readContinuationByte(); | |
byte3 = readContinuationByte(); | |
byte4 = readContinuationByte(); | |
codePoint = ((byte1 & 0x07) << 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, opts) { | |
opts = opts || {}; | |
var strict = false !== opts.strict; | |
byteArray = ucs2decode(byteString); | |
byteCount = byteArray.length; | |
byteIndex = 0; | |
var codePoints = []; | |
var tmp; | |
while ((tmp = decodeSymbol(strict)) !== false) { | |
codePoints.push(tmp); | |
} | |
return ucs2encode(codePoints); | |
} | |
module.exports = { | |
version: '2.1.2', | |
encode: utf8encode, | |
decode: utf8decode | |
}; | |
},{}],26:[function(require,module,exports){ | |
// Copyright Joyent, Inc. and other Node contributors. | |
// | |
// Permission is hereby granted, free of charge, to any person obtaining a | |
// copy of this software and associated documentation files (the | |
// "Software"), to deal in the Software without restriction, including | |
// without limitation the rights to use, copy, modify, merge, publish, | |
// distribute, sublicense, and/or sell copies of the Software, and to permit | |
// persons to whom the Software is furnished to do so, subject to the | |
// following conditions: | |
// | |
// The above copyright notice and this permission notice shall be included | |
// in all copies or substantial portions of the Software. | |
// | |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
// USE OR OTHER DEALINGS IN THE SOFTWARE. | |
var objectCreate = Object.create || objectCreatePolyfill | |
var objectKeys = Object.keys || objectKeysPolyfill | |
var bind = Function.prototype.bind || functionBindPolyfill | |
function EventEmitter() { | |
if (!this._events || !Object.prototype.hasOwnProperty.call(this, '_events')) { | |
this._events = objectCreate(null); | |
this._eventsCount = 0; | |
} | |
this._maxListeners = this._maxListeners || undefined; | |
} | |
module.exports = EventEmitter; | |
// Backwards-compat with node 0.10.x | |
EventEmitter.EventEmitter = EventEmitter; | |
EventEmitter.prototype._events = undefined; | |
EventEmitter.prototype._maxListeners = undefined; | |
// By default EventEmitters will print a warning if more than 10 listeners are | |
// added to it. This is a useful default which helps finding memory leaks. | |
var defaultMaxListeners = 10; | |
var hasDefineProperty; | |
try { | |
var o = {}; | |
if (Object.defineProperty) Object.defineProperty(o, 'x', { value: 0 }); | |
hasDefineProperty = o.x === 0; | |
} catch (err) { hasDefineProperty = false } | |
if (hasDefineProperty) { | |
Object.defineProperty(EventEmitter, 'defaultMaxListeners', { | |
enumerable: true, | |
get: function() { | |
return defaultMaxListeners; | |
}, | |
set: function(arg) { | |
// check whether the input is a positive number (whose value is zero or | |
// greater and not a NaN). | |
if (typeof arg !== 'number' || arg < 0 || arg !== arg) | |
throw new TypeError('"defaultMaxListeners" must be a positive number'); | |
defaultMaxListeners = arg; | |
} | |
}); | |
} else { | |
EventEmitter.defaultMaxListeners = defaultMaxListeners; | |
} | |
// Obviously not all Emitters should be limited to 10. This function allows | |
// that to be increased. Set to zero for unlimited. | |
EventEmitter.prototype.setMaxListeners = function setMaxListeners(n) { | |
if (typeof n !== 'number' || n < 0 || isNaN(n)) | |
throw new TypeError('"n" argument must be a positive number'); | |
this._maxListeners = n; | |
return this; | |
}; | |
function $getMaxListeners(that) { | |
if (that._maxListeners === undefined) | |
return EventEmitter.defaultMaxListeners; | |
return that._maxListeners; | |
} | |
EventEmitter.prototype.getMaxListeners = function getMaxListeners() { | |
return $getMaxListeners(this); | |
}; | |
// These standalone emit* functions are used to optimize calling of event | |
// handlers for fast cases because emit() itself often has a variable number of | |
// arguments and can be deoptimized because of that. These functions always have | |
// the same number of arguments and thus do not get deoptimized, so the code | |
// inside them can execute faster. | |
function emitNone(handler, isFn, self) { | |
if (isFn) | |
handler.call(self); | |
else { | |
var len = handler.length; | |
var listeners = arrayClone(handler, len); | |
for (var i = 0; i < len; ++i) | |
listeners[i].call(self); | |
} | |
} | |
function emitOne(handler, isFn, self, arg1) { | |
if (isFn) | |
handler.call(self, arg1); | |
else { | |
var len = handler.length; | |
var listeners = arrayClone(handler, len); | |
for (var i = 0; i < len; ++i) | |
listeners[i].call(self, arg1); | |
} | |
} | |
function emitTwo(handler, isFn, self, arg1, arg2) { | |
if (isFn) | |
handler.call(self, arg1, arg2); | |
else { | |
var len = handler.length; | |
var listeners = arrayClone(handler, len); | |
for (var i = 0; i < len; ++i) | |
listeners[i].call(self, arg1, arg2); | |
} | |
} | |
function emitThree(handler, isFn, self, arg1, arg2, arg3) { | |
if (isFn) | |
handler.call(self, arg1, arg2, arg3); | |
else { | |
var len = handler.length; | |
var listeners = arrayClone(handler, len); | |
for (var i = 0; i < len; ++i) | |
listeners[i].call(self, arg1, arg2, arg3); | |
} | |
} | |
function emitMany(handler, isFn, self, args) { | |
if (isFn) | |
handler.apply(self, args); | |
else { | |
var len = handler.length; | |
var listeners = arrayClone(handler, len); | |
for (var i = 0; i < len; ++i) | |
listeners[i].apply(self, args); | |
} | |
} | |
EventEmitter.prototype.emit = function emit(type) { | |
var er, handler, len, args, i, events; | |
var doError = (type === 'error'); | |
events = this._events; | |
if (events) | |
doError = (doError && events.error == null); | |
else if (!doError) | |
return false; | |
// If there is no 'error' event listener then throw. | |
if (doError) { | |
if (arguments.length > 1) | |
er = arguments[1]; | |
if (er instanceof Error) { | |
throw er; // Unhandled 'error' event | |
} else { | |
// At least give some kind of context to the user | |
var err = new Error('Unhandled "error" event. (' + er + ')'); | |
err.context = er; | |
throw err; | |
} | |
return false; | |
} | |
handler = events[type]; | |
if (!handler) | |
return false; | |
var isFn = typeof handler === 'function'; | |
len = arguments.length; | |
switch (len) { | |
// fast cases | |
case 1: | |
emitNone(handler, isFn, this); | |
break; | |
case 2: | |
emitOne(handler, isFn, this, arguments[1]); | |
break; | |
case 3: | |
emitTwo(handler, isFn, this, arguments[1], arguments[2]); | |
break; | |
case 4: | |
emitThree(handler, isFn, this, arguments[1], arguments[2], arguments[3]); | |
break; | |
// slower | |
default: | |
args = new Array(len - 1); | |
for (i = 1; i < len; i++) | |
args[i - 1] = arguments[i]; | |
emitMany(handler, isFn, this, args); | |
} | |
return true; | |
}; | |
function _addListener(target, type, listener, prepend) { | |
var m; | |
var events; | |
var existing; | |
if (typeof listener !== 'function') | |
throw new TypeError('"listener" argument must be a function'); | |
events = target._events; | |
if (!events) { | |
events = target._events = objectCreate(null); | |
target._eventsCount = 0; | |
} else { | |
// To avoid recursion in the case that type === "newListener"! Before | |
// adding it to the listeners, first emit "newListener". | |
if (events.newListener) { | |
target.emit('newListener', type, | |
listener.listener ? listener.listener : listener); | |
// Re-assign `events` because a newListener handler could have caused the | |
// this._events to be assigned to a new object | |
events = target._events; | |
} | |
existing = events[type]; | |
} | |
if (!existing) { | |
// Optimize the case of one listener. Don't need the extra array object. | |
existing = events[type] = listener; | |
++target._eventsCount; | |
} else { | |
if (typeof existing === 'function') { | |
// Adding the second element, need to change to array. | |
existing = events[type] = | |
prepend ? [listener, existing] : [existing, listener]; | |
} else { | |
// If we've already got an array, just append. | |
if (prepend) { | |
existing.unshift(listener); | |
} else { | |
existing.push(listener); | |
} | |
} | |
// Check for listener leak | |
if (!existing.warned) { | |
m = $getMaxListeners(target); | |
if (m && m > 0 && existing.length > m) { | |
existing.warned = true; | |
var w = new Error('Possible EventEmitter memory leak detected. ' + | |
existing.length + ' "' + String(type) + '" listeners ' + | |
'added. Use emitter.setMaxListeners() to ' + | |
'increase limit.'); | |
w.name = 'MaxListenersExceededWarning'; | |
w.emitter = target; | |
w.type = type; | |
w.count = existing.length; | |
if (typeof console === 'object' && console.warn) { | |
console.warn('%s: %s', w.name, w.message); | |
} | |
} | |
} | |
} | |
return target; | |
} | |
EventEmitter.prototype.addListener = function addListener(type, listener) { | |
return _addListener(this, type, listener, false); | |
}; | |
EventEmitter.prototype.on = EventEmitter.prototype.addListener; | |
EventEmitter.prototype.prependListener = | |
function prependListener(type, listener) { | |
return _addListener(this, type, listener, true); | |
}; | |
function onceWrapper() { | |
if (!this.fired) { | |
this.target.removeListener(this.type, this.wrapFn); | |
this.fired = true; | |
switch (arguments.length) { | |
case 0: | |
return this.listener.call(this.target); | |
case 1: | |
return this.listener.call(this.target, arguments[0]); | |
case 2: | |
return this.listener.call(this.target, arguments[0], arguments[1]); | |
case 3: | |
return this.listener.call(this.target, arguments[0], arguments[1], | |
arguments[2]); | |
default: | |
var args = new Array(arguments.length); | |
for (var i = 0; i < args.length; ++i) | |
args[i] = arguments[i]; | |
this.listener.apply(this.target, args); | |
} | |
} | |
} | |
function _onceWrap(target, type, listener) { | |
var state = { fired: false, wrapFn: undefined, target: target, type: type, listener: listener }; | |
var wrapped = bind.call(onceWrapper, state); | |
wrapped.listener = listener; | |
state.wrapFn = wrapped; | |
return wrapped; | |
} | |
EventEmitter.prototype.once = function once(type, listener) { | |
if (typeof listener !== 'function') | |
throw new TypeError('"listener" argument must be a function'); | |
this.on(type, _onceWrap(this, type, listener)); | |
return this; | |
}; | |
EventEmitter.prototype.prependOnceListener = | |
function prependOnceListener(type, listener) { | |
if (typeof listener !== 'function') | |
throw new TypeError('"listener" argument must be a function'); | |
this.prependListener(type, _onceWrap(this, type, listener)); | |
return this; | |
}; | |
// Emits a 'removeListener' event if and only if the listener was removed. | |
EventEmitter.prototype.removeListener = | |
function removeListener(type, listener) { | |
var list, events, position, i, originalListener; | |
if (typeof listener !== 'function') | |
throw new TypeError('"listener" argument must be a function'); | |
events = this._events; | |
if (!events) | |
return this; | |
list = events[type]; | |
if (!list) | |
return this; | |
if (list === listener || list.listener === listener) { | |
if (--this._eventsCount === 0) | |
this._events = objectCreate(null); | |
else { | |
delete events[type]; | |
if (events.removeListener) | |
this.emit('removeListener', type, list.listener || listener); | |
} | |
} else if (typeof list !== 'function') { | |
position = -1; | |
for (i = list.length - 1; i >= 0; i--) { | |
if (list[i] === listener || list[i].listener === listener) { | |
originalListener = list[i].listener; | |
position = i; | |
break; | |
} | |
} | |
if (position < 0) | |
return this; | |
if (position === 0) | |
list.shift(); | |
else | |
spliceOne(list, position); | |
if (list.length === 1) | |
events[type] = list[0]; | |
if (events.removeListener) | |
this.emit('removeListener', type, originalListener || listener); | |
} | |
return this; | |
}; | |
EventEmitter.prototype.removeAllListeners = | |
function removeAllListeners(type) { | |
var listeners, events, i; | |
events = this._events; | |
if (!events) | |
return this; | |
// not listening for removeListener, no need to emit | |
if (!events.removeListener) { | |
if (arguments.length === 0) { | |
this._events = objectCreate(null); | |
this._eventsCount = 0; | |
} else if (events[type]) { | |
if (--this._eventsCount === 0) | |
this._events = objectCreate(null); | |
else | |
delete events[type]; | |
} | |
return this; | |
} | |
// emit removeListener for all listeners on all events | |
if (arguments.length === 0) { | |
var keys = objectKeys(events); | |
var key; | |
for (i = 0; i < keys.length; ++i) { | |
key = keys[i]; | |
if (key === 'removeListener') continue; | |
this.removeAllListeners(key); | |
} | |
this.removeAllListeners('removeListener'); | |
this._events = objectCreate(null); | |
this._eventsCount = 0; | |
return this; | |
} | |
listeners = events[type]; | |
if (typeof listeners === 'function') { | |
this.removeListener(type, listeners); | |
} else if (listeners) { | |
// LIFO order | |
for (i = listeners.length - 1; i >= 0; i--) { | |
this.removeListener(type, listeners[i]); | |
} | |
} | |
return this; | |
}; | |
function _listeners(target, type, unwrap) { | |
var events = target._events; | |
if (!events) | |
return []; | |
var evlistener = events[type]; | |
if (!evlistener) | |
return []; | |
if (typeof evlistener === 'function') | |
return unwrap ? [evlistener.listener || evlistener] : [evlistener]; | |
return unwrap ? unwrapListeners(evlistener) : arrayClone(evlistener, evlistener.length); | |
} | |
EventEmitter.prototype.listeners = function listeners(type) { | |
return _listeners(this, type, true); | |
}; | |
EventEmitter.prototype.rawListeners = function rawListeners(type) { | |
return _listeners(this, type, false); | |
}; | |
EventEmitter.listenerCount = function(emitter, type) { | |
if (typeof emitter.listenerCount === 'function') { | |
return emitter.listenerCount(type); | |
} else { | |
return listenerCount.call(emitter, type); | |
} | |
}; | |
EventEmitter.prototype.listenerCount = listenerCount; | |
function listenerCount(type) { | |
var events = this._events; | |
if (events) { | |
var evlistener = events[type]; | |
if (typeof evlistener === 'function') { | |
return 1; | |
} else if (evlistener) { | |
return evlistener.length; | |
} | |
} | |
return 0; | |
} | |
EventEmitter.prototype.eventNames = function eventNames() { | |
return this._eventsCount > 0 ? Reflect.ownKeys(this._events) : []; | |
}; | |
// About 1.5x faster than the two-arg version of Array#splice(). | |
function spliceOne(list, index) { | |
for (var i = index, k = i + 1, n = list.length; k < n; i += 1, k += 1) | |
list[i] = list[k]; | |
list.pop(); | |
} | |
function arrayClone(arr, n) { | |
var copy = new Array(n); | |
for (var i = 0; i < n; ++i) | |
copy[i] = arr[i]; | |
return copy; | |
} | |
function unwrapListeners(arr) { | |
var ret = new Array(arr.length); | |
for (var i = 0; i < ret.length; ++i) { | |
ret[i] = arr[i].listener || arr[i]; | |
} | |
return ret; | |
} | |
function objectCreatePolyfill(proto) { | |
var F = function() {}; | |
F.prototype = proto; | |
return new F; | |
} | |
function objectKeysPolyfill(obj) { | |
var keys = []; | |
for (var k in obj) if (Object.prototype.hasOwnProperty.call(obj, k)) { | |
keys.push(k); | |
} | |
return k; | |
} | |
function functionBindPolyfill(context) { | |
var fn = this; | |
return function () { | |
return fn.apply(context, arguments); | |
}; | |
} | |
},{}],27:[function(require,module,exports){ | |
// originally pulled out of simple-peer | |
module.exports = function getBrowserRTC () { | |
if (typeof window === 'undefined') return null | |
var wrtc = { | |
RTCPeerConnection: window.RTCPeerConnection || window.mozRTCPeerConnection || | |
window.webkitRTCPeerConnection, | |
RTCSessionDescription: window.RTCSessionDescription || | |
window.mozRTCSessionDescription || window.webkitRTCSessionDescription, | |
RTCIceCandidate: window.RTCIceCandidate || window.mozRTCIceCandidate || | |
window.webkitRTCIceCandidate | |
} | |
if (!wrtc.RTCPeerConnection) return null | |
return wrtc | |
} | |
},{}],28:[function(require,module,exports){ | |
(function (Buffer){ | |
/* global Blob File */ | |
/* | |
* Module requirements. | |
*/ | |
var isArray = require('isarray'); | |
var toString = Object.prototype.toString; | |
var withNativeBlob = typeof Blob === 'function' || | |
typeof Blob !== 'undefined' && toString.call(Blob) === '[object BlobConstructor]'; | |
var withNativeFile = typeof File === 'function' || | |
typeof File !== 'undefined' && toString.call(File) === '[object FileConstructor]'; | |
/** | |
* Module exports. | |
*/ | |
module.exports = hasBinary; | |
/** | |
* Checks for binary data. | |
* | |
* Supports Buffer, ArrayBuffer, Blob and File. | |
* | |
* @param {Object} anything | |
* @api public | |
*/ | |
function hasBinary (obj) { | |
if (!obj || typeof obj !== 'object') { | |
return false; | |
} | |
if (isArray(obj)) { | |
for (var i = 0, l = obj.length; i < l; i++) { | |
if (hasBinary(obj[i])) { | |
return true; | |
} | |
} | |
return false; | |
} | |
if ((typeof Buffer === 'function' && Buffer.isBuffer && Buffer.isBuffer(obj)) || | |
(typeof ArrayBuffer === 'function' && obj instanceof ArrayBuffer) || | |
(withNativeBlob && obj instanceof Blob) || | |
(withNativeFile && obj instanceof File) | |
) { | |
return true; | |
} | |
// see: https://github.com/Automattic/has-binary/pull/4 | |
if (obj.toJSON && typeof obj.toJSON === 'function' && arguments.length === 1) { | |
return hasBinary(obj.toJSON(), true); | |
} | |
for (var key in obj) { | |
if (Object.prototype.hasOwnProperty.call(obj, key) && hasBinary(obj[key])) { | |
return true; | |
} | |
} | |
return false; | |
} | |
}).call(this,require("buffer").Buffer) | |
},{"buffer":8,"isarray":29}],29:[function(require,module,exports){ | |
var toString = {}.toString; | |
module.exports = Array.isArray || function (arr) { | |
return toString.call(arr) == '[object Array]'; | |
}; | |
},{}],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){ | |
exports.read = function (buffer, offset, isLE, mLen, nBytes) { | |
var e, m | |
var eLen = (nBytes * 8) - mLen - 1 | |
var eMax = (1 << eLen) - 1 | |
var eBias = eMax >> 1 | |
var nBits = -7 | |
var i = isLE ? (nBytes - 1) : 0 | |
var d = isLE ? -1 : 1 | |
var s = buffer[offset + i] | |
i += d | |
e = s & ((1 << (-nBits)) - 1) | |
s >>= (-nBits) | |
nBits += eLen | |
for (; nBits > 0; e = (e * 256) + buffer[offset + i], i += d, nBits -= 8) {} | |
m = e & ((1 << (-nBits)) - 1) | |
e >>= (-nBits) | |
nBits += mLen | |
for (; nBits > 0; m = (m * 256) + buffer[offset + i], i += d, nBits -= 8) {} | |
if (e === 0) { | |
e = 1 - eBias | |
} else if (e === eMax) { | |
return m ? NaN : ((s ? -1 : 1) * Infinity) | |
} else { | |
m = m + Math.pow(2, mLen) | |
e = e - eBias | |
} | |
return (s ? -1 : 1) * m * Math.pow(2, e - mLen) | |
} | |
exports.write = function (buffer, value, offset, isLE, mLen, nBytes) { | |
var e, m, c | |
var eLen = (nBytes * 8) - mLen - 1 | |
var eMax = (1 << eLen) - 1 | |
var eBias = eMax >> 1 | |
var rt = (mLen === 23 ? Math.pow(2, -24) - Math.pow(2, -77) : 0) | |
var i = isLE ? 0 : (nBytes - 1) | |
var d = isLE ? 1 : -1 | |
var s = value < 0 || (value === 0 && 1 / value < 0) ? 1 : 0 | |
value = Math.abs(value) | |
if (isNaN(value) || value === Infinity) { | |
m = isNaN(value) ? 1 : 0 | |
e = eMax | |
} else { | |
e = Math.floor(Math.log(value) / Math.LN2) | |
if (value * (c = Math.pow(2, -e)) < 1) { | |
e-- | |
c *= 2 | |
} | |
if (e + eBias >= 1) { | |
value += rt / c | |
} else { | |
value += rt * Math.pow(2, 1 - eBias) | |
} | |
if (value * c >= 2) { | |
e++ | |
c /= 2 | |
} | |
if (e + eBias >= eMax) { | |
m = 0 | |
e = eMax | |
} else if (e + eBias >= 1) { | |
m = ((value * c) - 1) * Math.pow(2, mLen) | |
e = e + eBias | |
} else { | |
m = value * Math.pow(2, eBias - 1) * Math.pow(2, mLen) | |
e = 0 | |
} | |
} | |
for (; mLen >= 8; buffer[offset + i] = m & 0xff, i += d, m /= 256, mLen -= 8) {} | |
e = (e << mLen) | m | |
eLen += mLen | |
for (; eLen > 0; buffer[offset + i] = e & 0xff, i += d, e /= 256, eLen -= 8) {} | |
buffer[offset + i - d] |= s * 128 | |
} | |
},{}],32:[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; | |
}; | |
},{}],33:[function(require,module,exports){ | |
if (typeof Object.create === 'function') { | |
// implementation from standard node.js 'util' module | |
module.exports = function inherits(ctor, superCtor) { | |
if (superCtor) { | |
ctor.super_ = superCtor | |
ctor.prototype = Object.create(superCtor.prototype, { | |
constructor: { | |
value: ctor, | |
enumerable: false, | |
writable: true, | |
configurable: true | |
} | |
}) | |
} | |
}; | |
} else { | |
// old school shim for old browsers | |
module.exports = function inherits(ctor, superCtor) { | |
if (superCtor) { | |
ctor.super_ = superCtor | |
var TempCtor = function () {} | |
TempCtor.prototype = superCtor.prototype | |
ctor.prototype = new TempCtor() | |
ctor.prototype.constructor = ctor | |
} | |
} | |
} | |
},{}],34:[function(require,module,exports){ | |
/** | |
* Helpers. | |
*/ | |
var s = 1000; | |
var m = s * 60; | |
var h = m * 60; | |
var d = h * 24; | |
var w = d * 7; | |
var y = d * 365.25; | |
/** | |
* Parse or format the given `val`. | |
* | |
* Options: | |
* | |
* - `long` verbose formatting [false] | |
* | |
* @param {String|Number} val | |
* @param {Object} [options] | |
* @throws {Error} throw an error if val is not a non-empty string or a number | |
* @return {String|Number} | |
* @api public | |
*/ | |
module.exports = function(val, options) { | |
options = options || {}; | |
var type = typeof val; | |
if (type === 'string' && val.length > 0) { | |
return parse(val); | |
} else if (type === 'number' && isFinite(val)) { | |
return options.long ? fmtLong(val) : fmtShort(val); | |
} | |
throw new Error( | |
'val is not a non-empty string or a valid number. val=' + | |
JSON.stringify(val) | |
); | |
}; | |
/** | |
* Parse the given `str` and return milliseconds. | |
* | |
* @param {String} str | |
* @return {Number} | |
* @api private | |
*/ | |
function parse(str) { | |
str = String(str); | |
if (str.length > 100) { | |
return; | |
} | |
var match = /^(-?(?:\d+)?\.?\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|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 'weeks': | |
case 'week': | |
case 'w': | |
return n * w; | |
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; | |
default: | |
return undefined; | |
} | |
} | |
/** | |
* Short format for `ms`. | |
* | |
* @param {Number} ms | |
* @return {String} | |
* @api private | |
*/ | |
function fmtShort(ms) { | |
var msAbs = Math.abs(ms); | |
if (msAbs >= d) { | |
return Math.round(ms / d) + 'd'; | |
} | |
if (msAbs >= h) { | |
return Math.round(ms / h) + 'h'; | |
} | |
if (msAbs >= m) { | |
return Math.round(ms / m) + 'm'; | |
} | |
if (msAbs >= s) { | |
return Math.round(ms / s) + 's'; | |
} | |
return ms + 'ms'; | |
} | |
/** | |
* Long format for `ms`. | |
* | |
* @param {Number} ms | |
* @return {String} | |
* @api private | |
*/ | |
function fmtLong(ms) { | |
var msAbs = Math.abs(ms); | |
if (msAbs >= d) { | |
return plural(ms, msAbs, d, 'day'); | |
} | |
if (msAbs >= h) { | |
return plural(ms, msAbs, h, 'hour'); | |
} | |
if (msAbs >= m) { | |
return plural(ms, msAbs, m, 'minute'); | |
} | |
if (msAbs >= s) { | |
return plural(ms, msAbs, s, 'second'); | |
} | |
return ms + ' ms'; | |
} | |
/** | |
* Pluralization helper. | |
*/ | |
function plural(ms, msAbs, n, name) { | |
var isPlural = msAbs >= n * 1.5; | |
return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : ''); | |
} | |
},{}],35:[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; | |
}; | |
},{}],36:[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; | |
}; | |
},{}],37:[function(require,module,exports){ | |
// shim for using process in browser | |
var process = module.exports = {}; | |
// cached from whatever global is present so that test runners that stub it | |
// don't break things. But we need to wrap it in a try catch in case it is | |
// wrapped in strict mode code which doesn't define any globals. It's inside a | |
// function because try/catches deoptimize in certain engines. | |
var cachedSetTimeout; | |
var cachedClearTimeout; | |
function defaultSetTimout() { | |
throw new Error('setTimeout has not been defined'); | |
} | |
function defaultClearTimeout () { | |
throw new Error('clearTimeout has not been defined'); | |
} | |
(function () { | |
try { | |
if (typeof setTimeout === 'function') { | |
cachedSetTimeout = setTimeout; | |
} else { | |
cachedSetTimeout = defaultSetTimout; | |
} | |
} catch (e) { | |
cachedSetTimeout = defaultSetTimout; | |
} | |
try { | |
if (typeof clearTimeout === 'function') { | |
cachedClearTimeout = clearTimeout; | |
} else { | |
cachedClearTimeout = defaultClearTimeout; | |
} | |
} catch (e) { | |
cachedClearTimeout = defaultClearTimeout; | |
} | |
} ()) | |
function runTimeout(fun) { | |
if (cachedSetTimeout === setTimeout) { | |
//normal enviroments in sane situations | |
return setTimeout(fun, 0); | |
} | |
// if setTimeout wasn't available but was latter defined | |
if ((cachedSetTimeout === defaultSetTimout || !cachedSetTimeout) && setTimeout) { | |
cachedSetTimeout = setTimeout; | |
return setTimeout(fun, 0); | |
} | |
try { | |
// when when somebody has screwed with setTimeout but no I.E. maddness | |
return cachedSetTimeout(fun, 0); | |
} catch(e){ | |
try { | |
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally | |
return cachedSetTimeout.call(null, fun, 0); | |
} catch(e){ | |
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error | |
return cachedSetTimeout.call(this, fun, 0); | |
} | |
} | |
} | |
function runClearTimeout(marker) { | |
if (cachedClearTimeout === clearTimeout) { | |
//normal enviroments in sane situations | |
return clearTimeout(marker); | |
} | |
// if clearTimeout wasn't available but was latter defined | |
if ((cachedClearTimeout === defaultClearTimeout || !cachedClearTimeout) && clearTimeout) { | |
cachedClearTimeout = clearTimeout; | |
return clearTimeout(marker); | |
} | |
try { | |
// when when somebody has screwed with setTimeout but no I.E. maddness | |
return cachedClearTimeout(marker); | |
} catch (e){ | |
try { | |
// When we are in I.E. but the script has been evaled so I.E. doesn't trust the global object when called normally | |
return cachedClearTimeout.call(null, marker); | |
} catch (e){ | |
// same as above but when it's a version of I.E. that must have the global object for 'this', hopfully our context correct otherwise it will throw a global error. | |
// Some versions of I.E. have different rules for clearTimeout vs setTimeout | |
return cachedClearTimeout.call(this, marker); | |
} | |
} | |
} | |
var queue = []; | |
var draining = false; | |
var currentQueue; | |
var queueIndex = -1; | |
function cleanUpNextTick() { | |
if (!draining || !currentQueue) { | |
return; | |
} | |
draining = false; | |
if (currentQueue.length) { | |
queue = currentQueue.concat(queue); | |
} else { | |
queueIndex = -1; | |
} | |
if (queue.length) { | |
drainQueue(); | |
} | |
} | |
function drainQueue() { | |
if (draining) { | |
return; | |
} | |
var timeout = runTimeout(cleanUpNextTick); | |
draining = true; | |
var len = queue.length; | |
while(len) { | |
currentQueue = queue; | |
queue = []; | |
while (++queueIndex < len) { | |
if (currentQueue) { | |
currentQueue[queueIndex].run(); | |
} | |
} | |
queueIndex = -1; | |
len = queue.length; | |
} | |
currentQueue = null; | |
draining = false; | |
runClearTimeout(timeout); | |
} | |
process.nextTick = function (fun) { | |
var args = new Array(arguments.length - 1); | |
if (arguments.length > 1) { | |
for (var i = 1; i < arguments.length; i++) { | |
args[i - 1] = arguments[i]; | |
} | |
} | |
queue.push(new Item(fun, args)); | |
if (queue.length === 1 && !draining) { | |
runTimeout(drainQueue); | |
} | |
}; | |
// v8 likes predictible objects | |
function Item(fun, array) { | |
this.fun = fun; | |
this.array = array; | |
} | |
Item.prototype.run = function () { | |
this.fun.apply(null, this.array); | |
}; | |
process.title = 'browser'; | |
process.browser = true; | |
process.env = {}; | |
process.argv = []; | |
process.version = ''; // empty string to avoid regexp issues | |
process.versions = {}; | |
function noop() {} | |
process.on = noop; | |
process.addListener = noop; | |
process.once = noop; | |
process.off = noop; | |
process.removeListener = noop; | |
process.removeAllListeners = noop; | |
process.emit = noop; | |
process.prependListener = noop; | |
process.prependOnceListener = noop; | |
process.listeners = function (name) { return [] } | |
process.binding = function (name) { | |
throw new Error('process.binding is not supported'); | |
}; | |
process.cwd = function () { return '/' }; | |
process.chdir = function (dir) { | |
throw new Error('process.chdir is not supported'); | |
}; | |
process.umask = function() { return 0; }; | |
},{}],38:[function(require,module,exports){ | |
let promise | |
module.exports = typeof queueMicrotask === 'function' | |
? queueMicrotask | |
// reuse resolved promise, and allocate it lazily | |
: cb => (promise || (promise = Promise.resolve())) | |
.then(cb) | |
.catch(err => setTimeout(() => { throw err }, 0)) | |
},{}],39:[function(require,module,exports){ | |
(function (process,global){ | |
'use strict' | |
// limit of Crypto.getRandomValues() | |
// https://developer.mozilla.org/en-US/docs/Web/API/Crypto/getRandomValues | |
var MAX_BYTES = 65536 | |
// Node supports requesting up to this number of bytes | |
// https://github.com/nodejs/node/blob/master/lib/internal/crypto/random.js#L48 | |
var MAX_UINT32 = 4294967295 | |
function oldBrowser () { | |
throw new Error('Secure random number generation is not supported by this browser.\nUse Chrome, Firefox or Internet Explorer 11') | |
} | |
var Buffer = require('safe-buffer').Buffer | |
var crypto = global.crypto || global.msCrypto | |
if (crypto && crypto.getRandomValues) { | |
module.exports = randomBytes | |
} else { | |
module.exports = oldBrowser | |
} | |
function randomBytes (size, cb) { | |
// phantomjs needs to throw | |
if (size > MAX_UINT32) throw new RangeError('requested too many random bytes') | |
var bytes = Buffer.allocUnsafe(size) | |
if (size > 0) { // getRandomValues fails on IE if size == 0 | |
if (size > MAX_BYTES) { // this is the max bytes crypto.getRandomValues | |
// can do at once see https://developer.mozilla.org/en-US/docs/Web/API/window.crypto.getRandomValues | |
for (var generated = 0; generated < size; generated += MAX_BYTES) { | |
// buffer.slice automatically checks if the end is past the end of | |
// the buffer so we don't have to here | |
crypto.getRandomValues(bytes.slice(generated, generated + MAX_BYTES)) | |
} | |
} else { | |
crypto.getRandomValues(bytes) | |
} | |
} | |
if (typeof cb === 'function') { | |
return process.nextTick(function () { | |
cb(null, bytes) | |
}) | |
} | |
return bytes | |
} | |
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
},{"_process":37,"safe-buffer":40}],40:[function(require,module,exports){ | |
/* eslint-disable node/no-deprecated-api */ | |
var buffer = require('buffer') | |
var Buffer = buffer.Buffer | |
// alternative to using Object.keys for old browsers | |
function copyProps (src, dst) { | |
for (var key in src) { | |
dst[key] = src[key] | |
} | |
} | |
if (Buffer.from && Buffer.alloc && Buffer.allocUnsafe && Buffer.allocUnsafeSlow) { | |
module.exports = buffer | |
} else { | |
// Copy properties from require('buffer') | |
copyProps(buffer, exports) | |
exports.Buffer = SafeBuffer | |
} | |
function SafeBuffer (arg, encodingOrOffset, length) { | |
return Buffer(arg, encodingOrOffset, length) | |
} | |
SafeBuffer.prototype = Object.create(Buffer.prototype) | |
// Copy static methods from Buffer | |
copyProps(Buffer, SafeBuffer) | |
SafeBuffer.from = function (arg, encodingOrOffset, length) { | |
if (typeof arg === 'number') { | |
throw new TypeError('Argument must not be a number') | |
} | |
return Buffer(arg, encodingOrOffset, length) | |
} | |
SafeBuffer.alloc = function (size, fill, encoding) { | |
if (typeof size !== 'number') { | |
throw new TypeError('Argument must be a number') | |
} | |
var buf = Buffer(size) | |
if (fill !== undefined) { | |
if (typeof encoding === 'string') { | |
buf.fill(fill, encoding) | |
} else { | |
buf.fill(fill) | |
} | |
} else { | |
buf.fill(0) | |
} | |
return buf | |
} | |
SafeBuffer.allocUnsafe = function (size) { | |
if (typeof size !== 'number') { | |
throw new TypeError('Argument must be a number') | |
} | |
return Buffer(size) | |
} | |
SafeBuffer.allocUnsafeSlow = function (size) { | |
if (typeof size !== 'number') { | |
throw new TypeError('Argument must be a number') | |
} | |
return buffer.SlowBuffer(size) | |
} | |
},{"buffer":8}],41:[function(require,module,exports){ | |
(function (Buffer){ | |
var debug = require('debug')('simple-peer') | |
var getBrowserRTC = require('get-browser-rtc') | |
var randombytes = require('randombytes') | |
var stream = require('readable-stream') | |
var queueMicrotask = require('queue-microtask') // TODO: remove when Node 10 is not supported | |
var MAX_BUFFERED_AMOUNT = 64 * 1024 | |
var ICECOMPLETE_TIMEOUT = 5 * 1000 | |
var CHANNEL_CLOSING_TIMEOUT = 5 * 1000 | |
// HACK: Filter trickle lines when trickle is disabled #354 | |
function filterTrickle (sdp) { | |
return sdp.replace(/a=ice-options:trickle\s\n/g, '') | |
} | |
function makeError (message, code) { | |
var err = new Error(message) | |
err.code = code | |
return err | |
} | |
function warn (message) { | |
console.warn(message) | |
} | |
/** | |
* WebRTC peer connection. Same API as node core `net.Socket`, plus a few extra methods. | |
* Duplex stream. | |
* @param {Object} opts | |
*/ | |
class Peer extends stream.Duplex { | |
constructor (opts) { | |
opts = Object.assign({ | |
allowHalfOpen: false | |
}, opts) | |
super(opts) | |
this._id = randombytes(4).toString('hex').slice(0, 7) | |
this._debug('new peer %o', opts) | |
this.channelName = opts.initiator | |
? opts.channelName || randombytes(20).toString('hex') | |
: null | |
this.initiator = opts.initiator || false | |
this.channelConfig = opts.channelConfig || Peer.channelConfig | |
this.config = Object.assign({}, Peer.config, opts.config) | |
this.offerOptions = opts.offerOptions || {} | |
this.answerOptions = opts.answerOptions || {} | |
this.sdpTransform = opts.sdpTransform || (sdp => sdp) | |
this.streams = opts.streams || (opts.stream ? [opts.stream] : []) // support old "stream" option | |
this.trickle = opts.trickle !== undefined ? opts.trickle : true | |
this.allowHalfTrickle = opts.allowHalfTrickle !== undefined ? opts.allowHalfTrickle : false | |
this.iceCompleteTimeout = opts.iceCompleteTimeout || ICECOMPLETE_TIMEOUT | |
this.destroyed = false | |
this._connected = false | |
this.remoteAddress = undefined | |
this.remoteFamily = undefined | |
this.remotePort = undefined | |
this.localAddress = undefined | |
this.localFamily = undefined | |
this.localPort = undefined | |
this._wrtc = (opts.wrtc && typeof opts.wrtc === 'object') | |
? opts.wrtc | |
: getBrowserRTC() | |
if (!this._wrtc) { | |
if (typeof window === 'undefined') { | |
throw makeError('No WebRTC support: Specify `opts.wrtc` option in this environment', 'ERR_WEBRTC_SUPPORT') | |
} else { | |
throw makeError('No WebRTC support: Not a supported browser', 'ERR_WEBRTC_SUPPORT') | |
} | |
} | |
this._pcReady = false | |
this._channelReady = false | |
this._iceComplete = false // ice candidate trickle done (got null candidate) | |
this._iceCompleteTimer = null // send an offer/answer anyway after some timeout | |
this._channel = null | |
this._pendingCandidates = [] | |
this._isNegotiating = !this.initiator // is this peer waiting for negotiation to complete? | |
this._batchedNegotiation = false // batch synchronous negotiations | |
this._queuedNegotiation = false // is there a queued negotiation request? | |
this._sendersAwaitingStable = [] | |
this._senderMap = new Map() | |
this._firstStable = true | |
this._closingInterval = null | |
this._remoteTracks = [] | |
this._remoteStreams = [] | |
this._chunk = null | |
this._cb = null | |
this._interval = null | |
try { | |
this._pc = new (this._wrtc.RTCPeerConnection)(this.config) | |
} catch (err) { | |
queueMicrotask(() => this.destroy(makeError(err, 'ERR_PC_CONSTRUCTOR'))) | |
return | |
} | |
// We prefer feature detection whenever possible, but sometimes that's not | |
// possible for certain implementations. | |
this._isReactNativeWebrtc = typeof this._pc._peerConnectionId === 'number' | |
this._pc.oniceconnectionstatechange = () => { | |
this._onIceStateChange() | |
} | |
this._pc.onicegatheringstatechange = () => { | |
this._onIceStateChange() | |
} | |
this._pc.onsignalingstatechange = () => { | |
this._onSignalingStateChange() | |
} | |
this._pc.onicecandidate = event => { | |
this._onIceCandidate(event) | |
} | |
// Other spec events, unused by this implementation: | |
// - onconnectionstatechange | |
// - onicecandidateerror | |
// - onfingerprintfailure | |
// - onnegotiationneeded | |
if (this.initiator) { | |
this._setupData({ | |
channel: this._pc.createDataChannel(this.channelName, this.channelConfig) | |
}) | |
} else { | |
this._pc.ondatachannel = event => { | |
this._setupData(event) | |
} | |
} | |
if (this.streams) { | |
this.streams.forEach(stream => { | |
this.addStream(stream) | |
}) | |
} | |
this._pc.ontrack = event => { | |
this._onTrack(event) | |
} | |
if (this.initiator) { | |
this._needsNegotiation() | |
} | |
this._onFinishBound = () => { | |
this._onFinish() | |
} | |
this.once('finish', this._onFinishBound) | |
} | |
get bufferSize () { | |
return (this._channel && this._channel.bufferedAmount) || 0 | |
} | |
// HACK: it's possible channel.readyState is "closing" before peer.destroy() fires | |
// https://bugs.chromium.org/p/chromium/issues/detail?id=882743 | |
get connected () { | |
return (this._connected && this._channel.readyState === 'open') | |
} | |
address () { | |
return { port: this.localPort, family: this.localFamily, address: this.localAddress } | |
} | |
signal (data) { | |
if (this.destroyed) throw makeError('cannot signal after peer is destroyed', 'ERR_SIGNALING') | |
if (typeof data === 'string') { | |
try { | |
data = JSON.parse(data) | |
} catch (err) { | |
data = {} | |
} | |
} | |
this._debug('signal()') | |
if (data.renegotiate && this.initiator) { | |
this._debug('got request to renegotiate') | |
this._needsNegotiation() | |
} | |
if (data.transceiverRequest && this.initiator) { | |
this._debug('got request for transceiver') | |
this.addTransceiver(data.transceiverRequest.kind, data.transceiverRequest.init) | |
} | |
if (data.candidate) { | |
if (this._pc.localDescription && this._pc.localDescription.type && this._pc.remoteDescription && this._pc.remoteDescription.type) { | |
this._addIceCandidate(data.candidate) | |
} else { | |
this._pendingCandidates.push(data.candidate) | |
} | |
} | |
if (data.sdp) { | |
this._pc.setRemoteDescription(new (this._wrtc.RTCSessionDescription)(data)) | |
.then(() => { | |
if (this.destroyed) return | |
this._pendingCandidates.forEach(candidate => { | |
this._addIceCandidate(candidate) | |
}) | |
this._pendingCandidates = [] | |
if (this._pc.remoteDescription.type === 'offer') this._createAnswer() | |
}) | |
.catch(err => { | |
this.destroy(makeError(err, 'ERR_SET_REMOTE_DESCRIPTION')) | |
}) | |
} | |
if (!data.sdp && !data.candidate && !data.renegotiate && !data.transceiverRequest) { | |
this.destroy(makeError('signal() called with invalid signal data', 'ERR_SIGNALING')) | |
} | |
} | |
_addIceCandidate (candidate) { | |
var iceCandidateObj = new this._wrtc.RTCIceCandidate(candidate) | |
this._pc.addIceCandidate(iceCandidateObj) | |
.catch(err => { | |
if (!iceCandidateObj.address || iceCandidateObj.address.endsWith('.local')) { | |
warn('Ignoring unsupported ICE candidate.') | |
} else { | |
this.destroy(makeError(err, 'ERR_ADD_ICE_CANDIDATE')) | |
} | |
}) | |
} | |
/** | |
* Send text/binary data to the remote peer. | |
* @param {ArrayBufferView|ArrayBuffer|Buffer|string|Blob} chunk | |
*/ | |
send (chunk) { | |
this._channel.send(chunk) | |
} | |
/** | |
* Add a Transceiver to the connection. | |
* @param {String} kind | |
* @param {Object} init | |
*/ | |
addTransceiver (kind, init) { | |
this._debug('addTransceiver()') | |
if (this.initiator) { | |
try { | |
this._pc.addTransceiver(kind, init) | |
this._needsNegotiation() | |
} catch (err) { | |
this.destroy(makeError(err, 'ERR_ADD_TRANSCEIVER')) | |
} | |
} else { | |
this.emit('signal', { // request initiator to renegotiate | |
transceiverRequest: { kind, init } | |
}) | |
} | |
} | |
/** | |
* Add a MediaStream to the connection. | |
* @param {MediaStream} stream | |
*/ | |
addStream (stream) { | |
this._debug('addStream()') | |
stream.getTracks().forEach(track => { | |
this.addTrack(track, stream) | |
}) | |
} | |
/** | |
* Add a MediaStreamTrack to the connection. | |
* @param {MediaStreamTrack} track | |
* @param {MediaStream} stream | |
*/ | |
addTrack (track, stream) { | |
this._debug('addTrack()') | |
var submap = this._senderMap.get(track) || new Map() // nested Maps map [track, stream] to sender | |
var sender = submap.get(stream) | |
if (!sender) { | |
sender = this._pc.addTrack(track, stream) | |
submap.set(stream, sender) | |
this._senderMap.set(track, submap) | |
this._needsNegotiation() | |
} else if (sender.removed) { | |
throw makeError('Track has been removed. You should enable/disable tracks that you want to re-add.', 'ERR_SENDER_REMOVED') | |
} else { | |
throw makeError('Track has already been added to that stream.', 'ERR_SENDER_ALREADY_ADDED') | |
} | |
} | |
/** | |
* Replace a MediaStreamTrack by another in the connection. | |
* @param {MediaStreamTrack} oldTrack | |
* @param {MediaStreamTrack} newTrack | |
* @param {MediaStream} stream | |
*/ | |
replaceTrack (oldTrack, newTrack, stream) { | |
this._debug('replaceTrack()') | |
var submap = this._senderMap.get(oldTrack) | |
var sender = submap ? submap.get(stream) : null | |
if (!sender) { | |
throw makeError('Cannot replace track that was never added.', 'ERR_TRACK_NOT_ADDED') | |
} | |
if (newTrack) this._senderMap.set(newTrack, submap) | |
if (sender.replaceTrack != null) { | |
sender.replaceTrack(newTrack) | |
} else { | |
this.destroy(makeError('replaceTrack is not supported in this browser', 'ERR_UNSUPPORTED_REPLACETRACK')) | |
} | |
} | |
/** | |
* Remove a MediaStreamTrack from the connection. | |
* @param {MediaStreamTrack} track | |
* @param {MediaStream} stream | |
*/ | |
removeTrack (track, stream) { | |
this._debug('removeSender()') | |
var submap = this._senderMap.get(track) | |
var sender = submap ? submap.get(stream) : null | |
if (!sender) { | |
throw makeError('Cannot remove track that was never added.', 'ERR_TRACK_NOT_ADDED') | |
} | |
try { | |
sender.removed = true | |
this._pc.removeTrack(sender) | |
} catch (err) { | |
if (err.name === 'NS_ERROR_UNEXPECTED') { | |
this._sendersAwaitingStable.push(sender) // HACK: Firefox must wait until (signalingState === stable) https://bugzilla.mozilla.org/show_bug.cgi?id=1133874 | |
} else { | |
this.destroy(makeError(err, 'ERR_REMOVE_TRACK')) | |
} | |
} | |
this._needsNegotiation() | |
} | |
/** | |
* Remove a MediaStream from the connection. | |
* @param {MediaStream} stream | |
*/ | |
removeStream (stream) { | |
this._debug('removeSenders()') | |
stream.getTracks().forEach(track => { | |
this.removeTrack(track, stream) | |
}) | |
} | |
_needsNegotiation () { | |
this._debug('_needsNegotiation') | |
if (this._batchedNegotiation) return // batch synchronous renegotiations | |
this._batchedNegotiation = true | |
queueMicrotask(() => { | |
this._batchedNegotiation = false | |
this._debug('starting batched negotiation') | |
this.negotiate() | |
}) | |
} | |
negotiate () { | |
if (this.initiator) { | |
if (this._isNegotiating) { | |
this._queuedNegotiation = true | |
this._debug('already negotiating, queueing') | |
} else { | |
this._debug('start negotiation') | |
setTimeout(() => { // HACK: Chrome crashes if we immediately call createOffer | |
this._createOffer() | |
}, 0) | |
} | |
} else { | |
if (!this._isNegotiating) { | |
this._debug('requesting negotiation from initiator') | |
this.emit('signal', { // request initiator to renegotiate | |
renegotiate: true | |
}) | |
} | |
} | |
this._isNegotiating = true | |
} | |
// TODO: Delete this method once readable-stream is updated to contain a default | |
// implementation of destroy() that automatically calls _destroy() | |
// See: https://github.com/nodejs/readable-stream/issues/283 | |
destroy (err) { | |
this._destroy(err, () => {}) | |
} | |
_destroy (err, cb) { | |
if (this.destroyed) return | |
this._debug('destroy (error: %s)', err && (err.message || err)) | |
this.readable = this.writable = false | |
if (!this._readableState.ended) this.push(null) | |
if (!this._writableState.finished) this.end() | |
this.destroyed = true | |
this._connected = false | |
this._pcReady = false | |
this._channelReady = false | |
this._remoteTracks = null | |
this._remoteStreams = null | |
this._senderMap = null | |
clearInterval(this._closingInterval) | |
this._closingInterval = null | |
clearInterval(this._interval) | |
this._interval = null | |
this._chunk = null | |
this._cb = null | |
if (this._onFinishBound) this.removeListener('finish', this._onFinishBound) | |
this._onFinishBound = null | |
if (this._channel) { | |
try { | |
this._channel.close() | |
} catch (err) {} | |
this._channel.onmessage = null | |
this._channel.onopen = null | |
this._channel.onclose = null | |
this._channel.onerror = null | |
} | |
if (this._pc) { | |
try { | |
this._pc.close() | |
} catch (err) {} | |
this._pc.oniceconnectionstatechange = null | |
this._pc.onicegatheringstatechange = null | |
this._pc.onsignalingstatechange = null | |
this._pc.onicecandidate = null | |
this._pc.ontrack = null | |
this._pc.ondatachannel = null | |
} | |
this._pc = null | |
this._channel = null | |
if (err) this.emit('error', err) | |
this.emit('close') | |
cb() | |
} | |
_setupData (event) { | |
if (!event.channel) { | |
// In some situations `pc.createDataChannel()` returns `undefined` (in wrtc), | |
// which is invalid behavior. Handle it gracefully. | |
// See: https://github.com/feross/simple-peer/issues/163 | |
return this.destroy(makeError('Data channel event is missing `channel` property', 'ERR_DATA_CHANNEL')) | |
} | |
this._channel = event.channel | |
this._channel.binaryType = 'arraybuffer' | |
if (typeof this._channel.bufferedAmountLowThreshold === 'number') { | |
this._channel.bufferedAmountLowThreshold = MAX_BUFFERED_AMOUNT | |
} | |
this.channelName = this._channel.label | |
this._channel.onmessage = event => { | |
this._onChannelMessage(event) | |
} | |
this._channel.onbufferedamountlow = () => { | |
this._onChannelBufferedAmountLow() | |
} | |
this._channel.onopen = () => { | |
this._onChannelOpen() | |
} | |
this._channel.onclose = () => { | |
this._onChannelClose() | |
} | |
this._channel.onerror = err => { | |
this.destroy(makeError(err, 'ERR_DATA_CHANNEL')) | |
} | |
// HACK: Chrome will sometimes get stuck in readyState "closing", let's check for this condition | |
// https://bugs.chromium.org/p/chromium/issues/detail?id=882743 | |
var isClosing = false | |
this._closingInterval = setInterval(() => { // No "onclosing" event | |
if (this._channel && this._channel.readyState === 'closing') { | |
if (isClosing) this._onChannelClose() // closing timed out: equivalent to onclose firing | |
isClosing = true | |
} else { | |
isClosing = false | |
} | |
}, CHANNEL_CLOSING_TIMEOUT) | |
} | |
_read () {} | |
_write (chunk, encoding, cb) { | |
if (this.destroyed) return cb(makeError('cannot write after peer is destroyed', 'ERR_DATA_CHANNEL')) | |
if (this._connected) { | |
try { | |
this.send(chunk) | |
} catch (err) { | |
return this.destroy(makeError(err, 'ERR_DATA_CHANNEL')) | |
} | |
if (this._channel.bufferedAmount > MAX_BUFFERED_AMOUNT) { | |
this._debug('start backpressure: bufferedAmount %d', this._channel.bufferedAmount) | |
this._cb = cb | |
} else { | |
cb(null) | |
} | |
} else { | |
this._debug('write before connect') | |
this._chunk = chunk | |
this._cb = cb | |
} | |
} | |
// When stream finishes writing, close socket. Half open connections are not | |
// supported. | |
_onFinish () { | |
if (this.destroyed) return | |
// Wait a bit before destroying so the socket flushes. | |
// TODO: is there a more reliable way to accomplish this? | |
const destroySoon = () => { | |
setTimeout(() => this.destroy(), 1000) | |
} | |
if (this._connected) { | |
destroySoon() | |
} else { | |
this.once('connect', destroySoon) | |
} | |
} | |
_startIceCompleteTimeout () { | |
if (this.destroyed) return | |
if (this._iceCompleteTimer) return | |
this._debug('started iceComplete timeout') | |
this._iceCompleteTimer = setTimeout(() => { | |
if (!this._iceComplete) { | |
this._iceComplete = true | |
this._debug('iceComplete timeout completed') | |
this.emit('iceTimeout') | |
this.emit('_iceComplete') | |
} | |
}, this.iceCompleteTimeout) | |
} | |
_createOffer () { | |
if (this.destroyed) return | |
this._pc.createOffer(this.offerOptions) | |
.then(offer => { | |
if (this.destroyed) return | |
if (!this.trickle && !this.allowHalfTrickle) offer.sdp = filterTrickle(offer.sdp) | |
offer.sdp = this.sdpTransform(offer.sdp) | |
const sendOffer = () => { | |
if (this.destroyed) return | |
var signal = this._pc.localDescription || offer | |
this._debug('signal') | |
this.emit('signal', { | |
type: signal.type, | |
sdp: signal.sdp | |
}) | |
} | |
const onSuccess = () => { | |
this._debug('createOffer success') | |
if (this.destroyed) return | |
if (this.trickle || this._iceComplete) sendOffer() | |
else this.once('_iceComplete', sendOffer) // wait for candidates | |
} | |
const onError = err => { | |
this.destroy(makeError(err, 'ERR_SET_LOCAL_DESCRIPTION')) | |
} | |
this._pc.setLocalDescription(offer) | |
.then(onSuccess) | |
.catch(onError) | |
}) | |
.catch(err => { | |
this.destroy(makeError(err, 'ERR_CREATE_OFFER')) | |
}) | |
} | |
_requestMissingTransceivers () { | |
if (this._pc.getTransceivers) { | |
this._pc.getTransceivers().forEach(transceiver => { | |
if (!transceiver.mid && transceiver.sender.track && !transceiver.requested) { | |
transceiver.requested = true // HACK: Safari returns negotiated transceivers with a null mid | |
this.addTransceiver(transceiver.sender.track.kind) | |
} | |
}) | |
} | |
} | |
_createAnswer () { | |
if (this.destroyed) return | |
this._pc.createAnswer(this.answerOptions) | |
.then(answer => { | |
if (this.destroyed) return | |
if (!this.trickle && !this.allowHalfTrickle) answer.sdp = filterTrickle(answer.sdp) | |
answer.sdp = this.sdpTransform(answer.sdp) | |
const sendAnswer = () => { | |
if (this.destroyed) return | |
var signal = this._pc.localDescription || answer | |
this._debug('signal') | |
this.emit('signal', { | |
type: signal.type, | |
sdp: signal.sdp | |
}) | |
if (!this.initiator) this._requestMissingTransceivers() | |
} | |
const onSuccess = () => { | |
if (this.destroyed) return | |
if (this.trickle || this._iceComplete) sendAnswer() | |
else this.once('_iceComplete', sendAnswer) | |
} | |
const onError = err => { | |
this.destroy(makeError(err, 'ERR_SET_LOCAL_DESCRIPTION')) | |
} | |
this._pc.setLocalDescription(answer) | |
.then(onSuccess) | |
.catch(onError) | |
}) | |
.catch(err => { | |
this.destroy(makeError(err, 'ERR_CREATE_ANSWER')) | |
}) | |
} | |
_onIceStateChange () { | |
if (this.destroyed) return | |
var iceConnectionState = this._pc.iceConnectionState | |
var iceGatheringState = this._pc.iceGatheringState | |
this._debug( | |
'iceStateChange (connection: %s) (gathering: %s)', | |
iceConnectionState, | |
iceGatheringState | |
) | |
this.emit('iceStateChange', iceConnectionState, iceGatheringState) | |
if (iceConnectionState === 'connected' || iceConnectionState === 'completed') { | |
this._pcReady = true | |
this._maybeReady() | |
} | |
if (iceConnectionState === 'failed') { | |
this.destroy(makeError('Ice connection failed.', 'ERR_ICE_CONNECTION_FAILURE')) | |
} | |
if (iceConnectionState === 'closed') { | |
this.destroy(makeError('Ice connection closed.', 'ERR_ICE_CONNECTION_CLOSED')) | |
} | |
} | |
getStats (cb) { | |
// statreports can come with a value array instead of properties | |
const flattenValues = report => { | |
if (Object.prototype.toString.call(report.values) === '[object Array]') { | |
report.values.forEach(value => { | |
Object.assign(report, value) | |
}) | |
} | |
return report | |
} | |
// Promise-based getStats() (standard) | |
if (this._pc.getStats.length === 0) { | |
this._pc.getStats() | |
.then(res => { | |
var reports = [] | |
res.forEach(report => { | |
reports.push(flattenValues(report)) | |
}) | |
cb(null, reports) | |
}, err => cb(err)) | |
// Two-parameter callback-based getStats() (deprecated, former standard) | |
} else if (this._isReactNativeWebrtc) { | |
this._pc.getStats(null, res => { | |
var reports = [] | |
res.forEach(report => { | |
reports.push(flattenValues(report)) | |
}) | |
cb(null, reports) | |
}, err => cb(err)) | |
// Single-parameter callback-based getStats() (non-standard) | |
} else if (this._pc.getStats.length > 0) { | |
this._pc.getStats(res => { | |
// If we destroy connection in `connect` callback this code might happen to run when actual connection is already closed | |
if (this.destroyed) return | |
var reports = [] | |
res.result().forEach(result => { | |
var report = {} | |
result.names().forEach(name => { | |
report[name] = result.stat(name) | |
}) | |
report.id = result.id | |
report.type = result.type | |
report.timestamp = result.timestamp | |
reports.push(flattenValues(report)) | |
}) | |
cb(null, reports) | |
}, err => cb(err)) | |
// Unknown browser, skip getStats() since it's anyone's guess which style of | |
// getStats() they implement. | |
} else { | |
cb(null, []) | |
} | |
} | |
_maybeReady () { | |
this._debug('maybeReady pc %s channel %s', this._pcReady, this._channelReady) | |
if (this._connected || this._connecting || !this._pcReady || !this._channelReady) return | |
this._connecting = true | |
// HACK: We can't rely on order here, for details see https://github.com/js-platform/node-webrtc/issues/339 | |
const findCandidatePair = () => { | |
if (this.destroyed) return | |
this.getStats((err, items) => { | |
if (this.destroyed) return | |
// Treat getStats error as non-fatal. It's not essential. | |
if (err) items = [] | |
var remoteCandidates = {} | |
var localCandidates = {} | |
var candidatePairs = {} | |
var foundSelectedCandidatePair = false | |
items.forEach(item => { | |
// TODO: Once all browsers support the hyphenated stats report types, remove | |
// the non-hypenated ones | |
if (item.type === 'remotecandidate' || item.type === 'remote-candidate') { | |
remoteCandidates[item.id] = item | |
} | |
if (item.type === 'localcandidate' || item.type === 'local-candidate') { | |
localCandidates[item.id] = item | |
} | |
if (item.type === 'candidatepair' || item.type === 'candidate-pair') { | |
candidatePairs[item.id] = item | |
} | |
}) | |
const setSelectedCandidatePair = selectedCandidatePair => { | |
foundSelectedCandidatePair = true | |
var local = localCandidates[selectedCandidatePair.localCandidateId] | |
if (local && (local.ip || local.address)) { | |
// Spec | |
this.localAddress = local.ip || local.address | |
this.localPort = Number(local.port) | |
} else if (local && local.ipAddress) { | |
// Firefox | |
this.localAddress = local.ipAddress | |
this.localPort = Number(local.portNumber) | |
} else if (typeof selectedCandidatePair.googLocalAddress === 'string') { | |
// TODO: remove this once Chrome 58 is released | |
local = selectedCandidatePair.googLocalAddress.split(':') | |
this.localAddress = local[0] | |
this.localPort = Number(local[1]) | |
} | |
if (this.localAddress) { | |
this.localFamily = this.localAddress.includes(':') ? 'IPv6' : 'IPv4' | |
} | |
var remote = remoteCandidates[selectedCandidatePair.remoteCandidateId] | |
if (remote && (remote.ip || remote.address)) { | |
// Spec | |
this.remoteAddress = remote.ip || remote.address | |
this.remotePort = Number(remote.port) | |
} else if (remote && remote.ipAddress) { | |
// Firefox | |
this.remoteAddress = remote.ipAddress | |
this.remotePort = Number(remote.portNumber) | |
} else if (typeof selectedCandidatePair.googRemoteAddress === 'string') { | |
// TODO: remove this once Chrome 58 is released | |
remote = selectedCandidatePair.googRemoteAddress.split(':') | |
this.remoteAddress = remote[0] | |
this.remotePort = Number(remote[1]) | |
} | |
if (this.remoteAddress) { | |
this.remoteFamily = this.remoteAddress.includes(':') ? 'IPv6' : 'IPv4' | |
} | |
this._debug( | |
'connect local: %s:%s remote: %s:%s', | |
this.localAddress, this.localPort, this.remoteAddress, this.remotePort | |
) | |
} | |
items.forEach(item => { | |
// Spec-compliant | |
if (item.type === 'transport' && item.selectedCandidatePairId) { | |
setSelectedCandidatePair(candidatePairs[item.selectedCandidatePairId]) | |
} | |
// Old implementations | |
if ( | |
(item.type === 'googCandidatePair' && item.googActiveConnection === 'true') || | |
((item.type === 'candidatepair' || item.type === 'candidate-pair') && item.selected) | |
) { | |
setSelectedCandidatePair(item) | |
} | |
}) | |
// Ignore candidate pair selection in browsers like Safari 11 that do not have any local or remote candidates | |
// But wait until at least 1 candidate pair is available | |
if (!foundSelectedCandidatePair && (!Object.keys(candidatePairs).length || Object.keys(localCandidates).length)) { | |
setTimeout(findCandidatePair, 100) | |
return | |
} else { | |
this._connecting = false | |
this._connected = true | |
} | |
if (this._chunk) { | |
try { | |
this.send(this._chunk) | |
} catch (err) { | |
return this.destroy(makeError(err, 'ERR_DATA_CHANNEL')) | |
} | |
this._chunk = null | |
this._debug('sent chunk from "write before connect"') | |
var cb = this._cb | |
this._cb = null | |
cb(null) | |
} | |
// If `bufferedAmountLowThreshold` and 'onbufferedamountlow' are unsupported, | |
// fallback to using setInterval to implement backpressure. | |
if (typeof this._channel.bufferedAmountLowThreshold !== 'number') { | |
this._interval = setInterval(() => this._onInterval(), 150) | |
if (this._interval.unref) this._interval.unref() | |
} | |
this._debug('connect') | |
this.emit('connect') | |
}) | |
} | |
findCandidatePair() | |
} | |
_onInterval () { | |
if (!this._cb || !this._channel || this._channel.bufferedAmount > MAX_BUFFERED_AMOUNT) { | |
return | |
} | |
this._onChannelBufferedAmountLow() | |
} | |
_onSignalingStateChange () { | |
if (this.destroyed) return | |
if (this._pc.signalingState === 'stable' && !this._firstStable) { | |
this._isNegotiating = false | |
// HACK: Firefox doesn't yet support removing tracks when signalingState !== 'stable' | |
this._debug('flushing sender queue', this._sendersAwaitingStable) | |
this._sendersAwaitingStable.forEach(sender => { | |
this._pc.removeTrack(sender) | |
this._queuedNegotiation = true | |
}) | |
this._sendersAwaitingStable = [] | |
if (this._queuedNegotiation) { | |
this._debug('flushing negotiation queue') | |
this._queuedNegotiation = false | |
this._needsNegotiation() // negotiate again | |
} | |
this._debug('negotiate') | |
this.emit('negotiate') | |
} | |
this._firstStable = false | |
this._debug('signalingStateChange %s', this._pc.signalingState) | |
this.emit('signalingStateChange', this._pc.signalingState) | |
} | |
_onIceCandidate (event) { | |
if (this.destroyed) return | |
if (event.candidate && this.trickle) { | |
this.emit('signal', { | |
candidate: { | |
candidate: event.candidate.candidate, | |
sdpMLineIndex: event.candidate.sdpMLineIndex, | |
sdpMid: event.candidate.sdpMid | |
} | |
}) | |
} else if (!event.candidate && !this._iceComplete) { | |
this._iceComplete = true | |
this.emit('_iceComplete') | |
} | |
// as soon as we've received one valid candidate start timeout | |
if (event.candidate) { | |
this._startIceCompleteTimeout() | |
} | |
} | |
_onChannelMessage (event) { | |
if (this.destroyed) return | |
var data = event.data | |
if (data instanceof ArrayBuffer) data = Buffer.from(data) | |
this.push(data) | |
} | |
_onChannelBufferedAmountLow () { | |
if (this.destroyed || !this._cb) return | |
this._debug('ending backpressure: bufferedAmount %d', this._channel.bufferedAmount) | |
var cb = this._cb | |
this._cb = null | |
cb(null) | |
} | |
_onChannelOpen () { | |
if (this._connected || this.destroyed) return | |
this._debug('on channel open') | |
this._channelReady = true | |
this._maybeReady() | |
} | |
_onChannelClose () { | |
if (this.destroyed) return | |
this._debug('on channel close') | |
this.destroy() | |
} | |
_onTrack (event) { | |
if (this.destroyed) return | |
event.streams.forEach(eventStream => { | |
this._debug('on track') | |
this.emit('track', event.track, eventStream) | |
this._remoteTracks.push({ | |
track: event.track, | |
stream: eventStream | |
}) | |
if (this._remoteStreams.some(remoteStream => { | |
return remoteStream.id === eventStream.id | |
})) return // Only fire one 'stream' event, even though there may be multiple tracks per stream | |
this._remoteStreams.push(eventStream) | |
queueMicrotask(() => { | |
this.emit('stream', eventStream) // ensure all tracks have been added | |
}) | |
}) | |
} | |
_debug () { | |
var args = [].slice.call(arguments) | |
args[0] = '[' + this._id + '] ' + args[0] | |
debug.apply(null, args) | |
} | |
} | |
Peer.WEBRTC_SUPPORT = !!getBrowserRTC() | |
/** | |
* Expose peer and data channel config for overriding all Peer | |
* instances. Otherwise, just set opts.config or opts.channelConfig | |
* when constructing a Peer. | |
*/ | |
Peer.config = { | |
iceServers: [ | |
{ | |
urls: 'stun:stun.l.google.com:19302' | |
}, | |
{ | |
urls: 'stun:global.stun.twilio.com:3478?transport=udp' | |
} | |
], | |
sdpSemantics: 'unified-plan' | |
} | |
Peer.channelConfig = {} | |
module.exports = Peer | |
}).call(this,require("buffer").Buffer) | |
},{"buffer":8,"debug":12,"get-browser-rtc":27,"queue-microtask":38,"randombytes":39,"readable-stream":56}],42:[function(require,module,exports){ | |
'use strict'; | |
function _inheritsLoose(subClass, superClass) { subClass.prototype = Object.create(superClass.prototype); subClass.prototype.constructor = subClass; subClass.__proto__ = superClass; } | |
var codes = {}; | |
function createErrorType(code, message, Base) { | |
if (!Base) { | |
Base = Error; | |
} | |
function getMessage(arg1, arg2, arg3) { | |
if (typeof message === 'string') { | |
return message; | |
} else { | |
return message(arg1, arg2, arg3); | |
} | |
} | |
var NodeError = | |
/*#__PURE__*/ | |
function (_Base) { | |
_inheritsLoose(NodeError, _Base); | |
function NodeError(arg1, arg2, arg3) { | |
return _Base.call(this, getMessage(arg1, arg2, arg3)) || this; | |
} | |
return NodeError; | |
}(Base); | |
NodeError.prototype.name = Base.name; | |
NodeError.prototype.code = code; | |
codes[code] = NodeError; | |
} // https://github.com/nodejs/node/blob/v10.8.0/lib/internal/errors.js | |
function oneOf(expected, thing) { | |
if (Array.isArray(expected)) { | |
var len = expected.length; | |
expected = expected.map(function (i) { | |
return String(i); | |
}); | |
if (len > 2) { | |
return "one of ".concat(thing, " ").concat(expected.slice(0, len - 1).join(', '), ", or ") + expected[len - 1]; | |
} else if (len === 2) { | |
return "one of ".concat(thing, " ").concat(expected[0], " or ").concat(expected[1]); | |
} else { | |
return "of ".concat(thing, " ").concat(expected[0]); | |
} | |
} else { | |
return "of ".concat(thing, " ").concat(String(expected)); | |
} | |
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/startsWith | |
function startsWith(str, search, pos) { | |
return str.substr(!pos || pos < 0 ? 0 : +pos, search.length) === search; | |
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/endsWith | |
function endsWith(str, search, this_len) { | |
if (this_len === undefined || this_len > str.length) { | |
this_len = str.length; | |
} | |
return str.substring(this_len - search.length, this_len) === search; | |
} // https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/String/includes | |
function includes(str, search, start) { | |
if (typeof start !== 'number') { | |
start = 0; | |
} | |
if (start + search.length > str.length) { | |
return false; | |
} else { | |
return str.indexOf(search, start) !== -1; | |
} | |
} | |
createErrorType('ERR_INVALID_OPT_VALUE', function (name, value) { | |
return 'The value "' + value + '" is invalid for option "' + name + '"'; | |
}, TypeError); | |
createErrorType('ERR_INVALID_ARG_TYPE', function (name, expected, actual) { | |
// determiner: 'must be' or 'must not be' | |
var determiner; | |
if (typeof expected === 'string' && startsWith(expected, 'not ')) { | |
determiner = 'must not be'; | |
expected = expected.replace(/^not /, ''); | |
} else { | |
determiner = 'must be'; | |
} | |
var msg; | |
if (endsWith(name, ' argument')) { | |
// For cases like 'first argument' | |
msg = "The ".concat(name, " ").concat(determiner, " ").concat(oneOf(expected, 'type')); | |
} else { | |
var type = includes(name, '.') ? 'property' : 'argument'; | |
msg = "The \"".concat(name, "\" ").concat(type, " ").concat(determiner, " ").concat(oneOf(expected, 'type')); | |
} | |
msg += ". Received type ".concat(typeof actual); | |
return msg; | |
}, TypeError); | |
createErrorType('ERR_STREAM_PUSH_AFTER_EOF', 'stream.push() after EOF'); | |
createErrorType('ERR_METHOD_NOT_IMPLEMENTED', function (name) { | |
return 'The ' + name + ' method is not implemented'; | |
}); | |
createErrorType('ERR_STREAM_PREMATURE_CLOSE', 'Premature close'); | |
createErrorType('ERR_STREAM_DESTROYED', function (name) { | |
return 'Cannot call ' + name + ' after a stream was destroyed'; | |
}); | |
createErrorType('ERR_MULTIPLE_CALLBACK', 'Callback called multiple times'); | |
createErrorType('ERR_STREAM_CANNOT_PIPE', 'Cannot pipe, not readable'); | |
createErrorType('ERR_STREAM_WRITE_AFTER_END', 'write after end'); | |
createErrorType('ERR_STREAM_NULL_VALUES', 'May not write null values to stream', TypeError); | |
createErrorType('ERR_UNKNOWN_ENCODING', function (arg) { | |
return 'Unknown encoding: ' + arg; | |
}, TypeError); | |
createErrorType('ERR_STREAM_UNSHIFT_AFTER_END_EVENT', 'stream.unshift() after end event'); | |
module.exports.codes = codes; | |
},{}],43:[function(require,module,exports){ | |
(function (process){ | |
'use strict' | |
var experimentalWarnings = new Set(); | |
function emitExperimentalWarning(feature) { | |
if (experimentalWarnings.has(feature)) return; | |
var msg = feature + ' is an experimental feature. This feature could ' + | |
'change at any time'; | |
experimentalWarnings.add(feature); | |
process.emitWarning(msg, 'ExperimentalWarning'); | |
} | |
function noop() {} | |
module.exports.emitExperimentalWarning = process.emitWarning | |
? emitExperimentalWarning | |
: noop; | |
}).call(this,require('_process')) | |
},{"_process":37}],44:[function(require,module,exports){ | |
(function (process){ | |
// Copyright Joyent, Inc. and other Node contributors. | |
// | |
// Permission is hereby granted, free of charge, to any person obtaining a | |
// copy of this software and associated documentation files (the | |
// "Software"), to deal in the Software without restriction, including | |
// without limitation the rights to use, copy, modify, merge, publish, | |
// distribute, sublicense, and/or sell copies of the Software, and to permit | |
// persons to whom the Software is furnished to do so, subject to the | |
// following conditions: | |
// | |
// The above copyright notice and this permission notice shall be included | |
// in all copies or substantial portions of the Software. | |
// | |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
// USE OR OTHER DEALINGS IN THE SOFTWARE. | |
// a duplex stream is just a stream that is both readable and writable. | |
// Since JS doesn't have multiple prototypal inheritance, this class | |
// prototypally inherits from Readable, and then parasitically from | |
// Writable. | |
'use strict'; | |
/*<replacement>*/ | |
var objectKeys = Object.keys || function (obj) { | |
var keys = []; | |
for (var key in obj) { | |
keys.push(key); | |
} | |
return keys; | |
}; | |
/*</replacement>*/ | |
module.exports = Duplex; | |
var Readable = require('./_stream_readable'); | |
var Writable = require('./_stream_writable'); | |
require('inherits')(Duplex, Readable); | |
{ | |
// Allow the keys array to be GC'ed. | |
var keys = objectKeys(Writable.prototype); | |
for (var v = 0; v < keys.length; v++) { | |
var method = keys[v]; | |
if (!Duplex.prototype[method]) Duplex.prototype[method] = Writable.prototype[method]; | |
} | |
} | |
function Duplex(options) { | |
if (!(this instanceof Duplex)) return new Duplex(options); | |
Readable.call(this, options); | |
Writable.call(this, options); | |
this.allowHalfOpen = true; | |
if (options) { | |
if (options.readable === false) this.readable = false; | |
if (options.writable === false) this.writable = false; | |
if (options.allowHalfOpen === false) { | |
this.allowHalfOpen = false; | |
this.once('end', onend); | |
} | |
} | |
} | |
Object.defineProperty(Duplex.prototype, 'writableHighWaterMark', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._writableState.highWaterMark; | |
} | |
}); | |
Object.defineProperty(Duplex.prototype, 'writableBuffer', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._writableState && this._writableState.getBuffer(); | |
} | |
}); | |
Object.defineProperty(Duplex.prototype, 'writableLength', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._writableState.length; | |
} | |
}); // the no-half-open enforcer | |
function onend() { | |
// If the writable side ended, then we're ok. | |
if (this._writableState.ended) return; // no more data can be written. | |
// But allow more writes to happen in this tick. | |
process.nextTick(onEndNT, this); | |
} | |
function onEndNT(self) { | |
self.end(); | |
} | |
Object.defineProperty(Duplex.prototype, 'destroyed', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
if (this._readableState === undefined || this._writableState === undefined) { | |
return false; | |
} | |
return this._readableState.destroyed && this._writableState.destroyed; | |
}, | |
set: function set(value) { | |
// we ignore the value if the stream | |
// has not been initialized yet | |
if (this._readableState === undefined || this._writableState === undefined) { | |
return; | |
} // backward compatibility, the user is explicitly | |
// managing destroyed | |
this._readableState.destroyed = value; | |
this._writableState.destroyed = value; | |
} | |
}); | |
}).call(this,require('_process')) | |
},{"./_stream_readable":46,"./_stream_writable":48,"_process":37,"inherits":33}],45:[function(require,module,exports){ | |
// Copyright Joyent, Inc. and other Node contributors. | |
// | |
// Permission is hereby granted, free of charge, to any person obtaining a | |
// copy of this software and associated documentation files (the | |
// "Software"), to deal in the Software without restriction, including | |
// without limitation the rights to use, copy, modify, merge, publish, | |
// distribute, sublicense, and/or sell copies of the Software, and to permit | |
// persons to whom the Software is furnished to do so, subject to the | |
// following conditions: | |
// | |
// The above copyright notice and this permission notice shall be included | |
// in all copies or substantial portions of the Software. | |
// | |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
// USE OR OTHER DEALINGS IN THE SOFTWARE. | |
// a passthrough stream. | |
// basically just the most minimal sort of Transform stream. | |
// Every written chunk gets output as-is. | |
'use strict'; | |
module.exports = PassThrough; | |
var Transform = require('./_stream_transform'); | |
require('inherits')(PassThrough, Transform); | |
function PassThrough(options) { | |
if (!(this instanceof PassThrough)) return new PassThrough(options); | |
Transform.call(this, options); | |
} | |
PassThrough.prototype._transform = function (chunk, encoding, cb) { | |
cb(null, chunk); | |
}; | |
},{"./_stream_transform":47,"inherits":33}],46:[function(require,module,exports){ | |
(function (process,global){ | |
// Copyright Joyent, Inc. and other Node contributors. | |
// | |
// Permission is hereby granted, free of charge, to any person obtaining a | |
// copy of this software and associated documentation files (the | |
// "Software"), to deal in the Software without restriction, including | |
// without limitation the rights to use, copy, modify, merge, publish, | |
// distribute, sublicense, and/or sell copies of the Software, and to permit | |
// persons to whom the Software is furnished to do so, subject to the | |
// following conditions: | |
// | |
// The above copyright notice and this permission notice shall be included | |
// in all copies or substantial portions of the Software. | |
// | |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
// USE OR OTHER DEALINGS IN THE SOFTWARE. | |
'use strict'; | |
module.exports = Readable; | |
/*<replacement>*/ | |
var Duplex; | |
/*</replacement>*/ | |
Readable.ReadableState = ReadableState; | |
/*<replacement>*/ | |
var EE = require('events').EventEmitter; | |
var EElistenerCount = function EElistenerCount(emitter, type) { | |
return emitter.listeners(type).length; | |
}; | |
/*</replacement>*/ | |
/*<replacement>*/ | |
var Stream = require('./internal/streams/stream'); | |
/*</replacement>*/ | |
var Buffer = require('buffer').Buffer; | |
var OurUint8Array = global.Uint8Array || function () {}; | |
function _uint8ArrayToBuffer(chunk) { | |
return Buffer.from(chunk); | |
} | |
function _isUint8Array(obj) { | |
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; | |
} | |
/*<replacement>*/ | |
var debugUtil = require('util'); | |
var debug; | |
if (debugUtil && debugUtil.debuglog) { | |
debug = debugUtil.debuglog('stream'); | |
} else { | |
debug = function debug() {}; | |
} | |
/*</replacement>*/ | |
var BufferList = require('./internal/streams/buffer_list'); | |
var destroyImpl = require('./internal/streams/destroy'); | |
var _require = require('./internal/streams/state'), | |
getHighWaterMark = _require.getHighWaterMark; | |
var _require$codes = require('../errors').codes, | |
ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE, | |
ERR_STREAM_PUSH_AFTER_EOF = _require$codes.ERR_STREAM_PUSH_AFTER_EOF, | |
ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED, | |
ERR_STREAM_UNSHIFT_AFTER_END_EVENT = _require$codes.ERR_STREAM_UNSHIFT_AFTER_END_EVENT; | |
var _require2 = require('../experimentalWarning'), | |
emitExperimentalWarning = _require2.emitExperimentalWarning; // Lazy loaded to improve the startup performance. | |
var StringDecoder; | |
var createReadableStreamAsyncIterator; | |
require('inherits')(Readable, Stream); | |
var kProxyEvents = ['error', 'close', 'destroy', 'pause', 'resume']; | |
function prependListener(emitter, event, fn) { | |
// Sadly this is not cacheable as some libraries bundle their own | |
// event emitter implementation with them. | |
if (typeof emitter.prependListener === 'function') return emitter.prependListener(event, fn); // This is a hack to make sure that our error handler is attached before any | |
// userland ones. NEVER DO THIS. This is here only because this code needs | |
// to continue to work with older versions of Node.js that do not include | |
// the prependListener() method. The goal is to eventually remove this hack. | |
if (!emitter._events || !emitter._events[event]) emitter.on(event, fn);else if (Array.isArray(emitter._events[event])) emitter._events[event].unshift(fn);else emitter._events[event] = [fn, emitter._events[event]]; | |
} | |
function ReadableState(options, stream, isDuplex) { | |
Duplex = Duplex || require('./_stream_duplex'); | |
options = options || {}; // Duplex streams are both readable and writable, but share | |
// the same options object. | |
// However, some cases require setting options to different | |
// values for the readable and the writable sides of the duplex stream. | |
// These options can be provided separately as readableXXX and writableXXX. | |
if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag. Used to make read(n) ignore n and to | |
// make all the buffer merging and length checks go away | |
this.objectMode = !!options.objectMode; | |
if (isDuplex) this.objectMode = this.objectMode || !!options.readableObjectMode; // the point at which it stops calling _read() to fill the buffer | |
// Note: 0 is a valid value, means "don't call _read preemptively ever" | |
this.highWaterMark = getHighWaterMark(this, options, 'readableHighWaterMark', isDuplex); // A linked list is used to store data chunks instead of an array because the | |
// linked list can remove elements from the beginning faster than | |
// array.shift() | |
this.buffer = new BufferList(); | |
this.length = 0; | |
this.pipes = null; | |
this.pipesCount = 0; | |
this.flowing = null; | |
this.ended = false; | |
this.endEmitted = false; | |
this.reading = false; // a flag to be able to tell if the event 'readable'/'data' is emitted | |
// immediately, or on a later tick. We set this to true at first, because | |
// any actions that shouldn't happen until "later" should generally also | |
// not happen before the first read call. | |
this.sync = true; // whenever we return null, then we set a flag to say | |
// that we're awaiting a 'readable' event emission. | |
this.needReadable = false; | |
this.emittedReadable = false; | |
this.readableListening = false; | |
this.resumeScheduled = false; | |
this.paused = true; // Should close be emitted on destroy. Defaults to true. | |
this.emitClose = options.emitClose !== false; // has it been destroyed | |
this.destroyed = false; // Crypto is kind of old and crusty. Historically, its default string | |
// encoding is 'binary' so we have to make this configurable. | |
// Everything else in the universe uses 'utf8', though. | |
this.defaultEncoding = options.defaultEncoding || 'utf8'; // the number of writers that are awaiting a drain event in .pipe()s | |
this.awaitDrain = 0; // if true, a maybeReadMore has been scheduled | |
this.readingMore = false; | |
this.decoder = null; | |
this.encoding = null; | |
if (options.encoding) { | |
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; | |
this.decoder = new StringDecoder(options.encoding); | |
this.encoding = options.encoding; | |
} | |
} | |
function Readable(options) { | |
Duplex = Duplex || require('./_stream_duplex'); | |
if (!(this instanceof Readable)) return new Readable(options); // Checking for a Stream.Duplex instance is faster here instead of inside | |
// the ReadableState constructor, at least with V8 6.5 | |
var isDuplex = this instanceof Duplex; | |
this._readableState = new ReadableState(options, this, isDuplex); // legacy | |
this.readable = true; | |
if (options) { | |
if (typeof options.read === 'function') this._read = options.read; | |
if (typeof options.destroy === 'function') this._destroy = options.destroy; | |
} | |
Stream.call(this); | |
} | |
Object.defineProperty(Readable.prototype, 'destroyed', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
if (this._readableState === undefined) { | |
return false; | |
} | |
return this._readableState.destroyed; | |
}, | |
set: function set(value) { | |
// we ignore the value if the stream | |
// has not been initialized yet | |
if (!this._readableState) { | |
return; | |
} // backward compatibility, the user is explicitly | |
// managing destroyed | |
this._readableState.destroyed = value; | |
} | |
}); | |
Readable.prototype.destroy = destroyImpl.destroy; | |
Readable.prototype._undestroy = destroyImpl.undestroy; | |
Readable.prototype._destroy = function (err, cb) { | |
cb(err); | |
}; // Manually shove something into the read() buffer. | |
// This returns true if the highWaterMark has not been hit yet, | |
// similar to how Writable.write() returns true if you should | |
// write() some more. | |
Readable.prototype.push = function (chunk, encoding) { | |
var state = this._readableState; | |
var skipChunkCheck; | |
if (!state.objectMode) { | |
if (typeof chunk === 'string') { | |
encoding = encoding || state.defaultEncoding; | |
if (encoding !== state.encoding) { | |
chunk = Buffer.from(chunk, encoding); | |
encoding = ''; | |
} | |
skipChunkCheck = true; | |
} | |
} else { | |
skipChunkCheck = true; | |
} | |
return readableAddChunk(this, chunk, encoding, false, skipChunkCheck); | |
}; // Unshift should *always* be something directly out of read() | |
Readable.prototype.unshift = function (chunk) { | |
return readableAddChunk(this, chunk, null, true, false); | |
}; | |
function readableAddChunk(stream, chunk, encoding, addToFront, skipChunkCheck) { | |
debug('readableAddChunk', chunk); | |
var state = stream._readableState; | |
if (chunk === null) { | |
state.reading = false; | |
onEofChunk(stream, state); | |
} else { | |
var er; | |
if (!skipChunkCheck) er = chunkInvalid(state, chunk); | |
if (er) { | |
stream.emit('error', er); | |
} else if (state.objectMode || chunk && chunk.length > 0) { | |
if (typeof chunk !== 'string' && !state.objectMode && Object.getPrototypeOf(chunk) !== Buffer.prototype) { | |
chunk = _uint8ArrayToBuffer(chunk); | |
} | |
if (addToFront) { | |
if (state.endEmitted) stream.emit('error', new ERR_STREAM_UNSHIFT_AFTER_END_EVENT());else addChunk(stream, state, chunk, true); | |
} else if (state.ended) { | |
stream.emit('error', new ERR_STREAM_PUSH_AFTER_EOF()); | |
} else if (state.destroyed) { | |
return false; | |
} else { | |
state.reading = false; | |
if (state.decoder && !encoding) { | |
chunk = state.decoder.write(chunk); | |
if (state.objectMode || chunk.length !== 0) addChunk(stream, state, chunk, false);else maybeReadMore(stream, state); | |
} else { | |
addChunk(stream, state, chunk, false); | |
} | |
} | |
} else if (!addToFront) { | |
state.reading = false; | |
maybeReadMore(stream, state); | |
} | |
} // We can push more data if we are below the highWaterMark. | |
// Also, if we have no data yet, we can stand some more bytes. | |
// This is to work around cases where hwm=0, such as the repl. | |
return !state.ended && (state.length < state.highWaterMark || state.length === 0); | |
} | |
function addChunk(stream, state, chunk, addToFront) { | |
if (state.flowing && state.length === 0 && !state.sync) { | |
state.awaitDrain = 0; | |
stream.emit('data', chunk); | |
} else { | |
// update the buffer info. | |
state.length += state.objectMode ? 1 : chunk.length; | |
if (addToFront) state.buffer.unshift(chunk);else state.buffer.push(chunk); | |
if (state.needReadable) emitReadable(stream); | |
} | |
maybeReadMore(stream, state); | |
} | |
function chunkInvalid(state, chunk) { | |
var er; | |
if (!_isUint8Array(chunk) && typeof chunk !== 'string' && chunk !== undefined && !state.objectMode) { | |
er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer', 'Uint8Array'], chunk); | |
} | |
return er; | |
} | |
Readable.prototype.isPaused = function () { | |
return this._readableState.flowing === false; | |
}; // backwards compatibility. | |
Readable.prototype.setEncoding = function (enc) { | |
if (!StringDecoder) StringDecoder = require('string_decoder/').StringDecoder; | |
this._readableState.decoder = new StringDecoder(enc); // if setEncoding(null), decoder.encoding equals utf8 | |
this._readableState.encoding = this._readableState.decoder.encoding; | |
return this; | |
}; // Don't raise the hwm > 8MB | |
var MAX_HWM = 0x800000; | |
function computeNewHighWaterMark(n) { | |
if (n >= MAX_HWM) { | |
n = MAX_HWM; | |
} else { | |
// Get the next highest power of 2 to prevent increasing hwm excessively in | |
// tiny amounts | |
n--; | |
n |= n >>> 1; | |
n |= n >>> 2; | |
n |= n >>> 4; | |
n |= n >>> 8; | |
n |= n >>> 16; | |
n++; | |
} | |
return n; | |
} // This function is designed to be inlinable, so please take care when making | |
// changes to the function body. | |
function howMuchToRead(n, state) { | |
if (n <= 0 || state.length === 0 && state.ended) return 0; | |
if (state.objectMode) return 1; | |
if (n !== n) { | |
// Only flow one buffer at a time | |
if (state.flowing && state.length) return state.buffer.head.data.length;else return state.length; | |
} // If we're asking for more than the current hwm, then raise the hwm. | |
if (n > state.highWaterMark) state.highWaterMark = computeNewHighWaterMark(n); | |
if (n <= state.length) return n; // Don't have enough | |
if (!state.ended) { | |
state.needReadable = true; | |
return 0; | |
} | |
return state.length; | |
} // you can override either this method, or the async _read(n) below. | |
Readable.prototype.read = function (n) { | |
debug('read', n); | |
n = parseInt(n, 10); | |
var state = this._readableState; | |
var nOrig = n; | |
if (n !== 0) state.emittedReadable = false; // if we're doing read(0) to trigger a readable event, but we | |
// already have a bunch of data in the buffer, then just trigger | |
// the 'readable' event and move on. | |
if (n === 0 && state.needReadable && ((state.highWaterMark !== 0 ? state.length >= state.highWaterMark : state.length > 0) || state.ended)) { | |
debug('read: emitReadable', state.length, state.ended); | |
if (state.length === 0 && state.ended) endReadable(this);else emitReadable(this); | |
return null; | |
} | |
n = howMuchToRead(n, state); // if we've ended, and we're now clear, then finish it up. | |
if (n === 0 && state.ended) { | |
if (state.length === 0) endReadable(this); | |
return null; | |
} // All the actual chunk generation logic needs to be | |
// *below* the call to _read. The reason is that in certain | |
// synthetic stream cases, such as passthrough streams, _read | |
// may be a completely synchronous operation which may change | |
// the state of the read buffer, providing enough data when | |
// before there was *not* enough. | |
// | |
// So, the steps are: | |
// 1. Figure out what the state of things will be after we do | |
// a read from the buffer. | |
// | |
// 2. If that resulting state will trigger a _read, then call _read. | |
// Note that this may be asynchronous, or synchronous. Yes, it is | |
// deeply ugly to write APIs this way, but that still doesn't mean | |
// that the Readable class should behave improperly, as streams are | |
// designed to be sync/async agnostic. | |
// Take note if the _read call is sync or async (ie, if the read call | |
// has returned yet), so that we know whether or not it's safe to emit | |
// 'readable' etc. | |
// | |
// 3. Actually pull the requested chunks out of the buffer and return. | |
// if we need a readable event, then we need to do some reading. | |
var doRead = state.needReadable; | |
debug('need readable', doRead); // if we currently have less than the highWaterMark, then also read some | |
if (state.length === 0 || state.length - n < state.highWaterMark) { | |
doRead = true; | |
debug('length less than watermark', doRead); | |
} // however, if we've ended, then there's no point, and if we're already | |
// reading, then it's unnecessary. | |
if (state.ended || state.reading) { | |
doRead = false; | |
debug('reading or ended', doRead); | |
} else if (doRead) { | |
debug('do read'); | |
state.reading = true; | |
state.sync = true; // if the length is currently zero, then we *need* a readable event. | |
if (state.length === 0) state.needReadable = true; // call internal read method | |
this._read(state.highWaterMark); | |
state.sync = false; // If _read pushed data synchronously, then `reading` will be false, | |
// and we need to re-evaluate how much data we can return to the user. | |
if (!state.reading) n = howMuchToRead(nOrig, state); | |
} | |
var ret; | |
if (n > 0) ret = fromList(n, state);else ret = null; | |
if (ret === null) { | |
state.needReadable = true; | |
n = 0; | |
} else { | |
state.length -= n; | |
state.awaitDrain = 0; | |
} | |
if (state.length === 0) { | |
// If we have nothing in the buffer, then we want to know | |
// as soon as we *do* get something into the buffer. | |
if (!state.ended) state.needReadable = true; // If we tried to read() past the EOF, then emit end on the next tick. | |
if (nOrig !== n && state.ended) endReadable(this); | |
} | |
if (ret !== null) this.emit('data', ret); | |
return ret; | |
}; | |
function onEofChunk(stream, state) { | |
if (state.ended) return; | |
if (state.decoder) { | |
var chunk = state.decoder.end(); | |
if (chunk && chunk.length) { | |
state.buffer.push(chunk); | |
state.length += state.objectMode ? 1 : chunk.length; | |
} | |
} | |
state.ended = true; | |
if (state.sync) { | |
// if we are sync, wait until next tick to emit the data. | |
// Otherwise we risk emitting data in the flow() | |
// the readable code triggers during a read() call | |
emitReadable(stream); | |
} else { | |
// emit 'readable' now to make sure it gets picked up. | |
state.needReadable = false; | |
if (!state.emittedReadable) { | |
state.emittedReadable = true; | |
emitReadable_(stream); | |
} | |
} | |
} // Don't emit readable right away in sync mode, because this can trigger | |
// another read() call => stack overflow. This way, it might trigger | |
// a nextTick recursion warning, but that's not so bad. | |
function emitReadable(stream) { | |
var state = stream._readableState; | |
state.needReadable = false; | |
if (!state.emittedReadable) { | |
debug('emitReadable', state.flowing); | |
state.emittedReadable = true; | |
process.nextTick(emitReadable_, stream); | |
} | |
} | |
function emitReadable_(stream) { | |
var state = stream._readableState; | |
debug('emitReadable_', state.destroyed, state.length, state.ended); | |
if (!state.destroyed && (state.length || state.ended)) { | |
stream.emit('readable'); | |
} // The stream needs another readable event if | |
// 1. It is not flowing, as the flow mechanism will take | |
// care of it. | |
// 2. It is not ended. | |
// 3. It is below the highWaterMark, so we can schedule | |
// another readable later. | |
state.needReadable = !state.flowing && !state.ended && state.length <= state.highWaterMark; | |
flow(stream); | |
} // at this point, the user has presumably seen the 'readable' event, | |
// and called read() to consume some data. that may have triggered | |
// in turn another _read(n) call, in which case reading = true if | |
// it's in progress. | |
// However, if we're not ended, or reading, and the length < hwm, | |
// then go ahead and try to read some more preemptively. | |
function maybeReadMore(stream, state) { | |
if (!state.readingMore) { | |
state.readingMore = true; | |
process.nextTick(maybeReadMore_, stream, state); | |
} | |
} | |
function maybeReadMore_(stream, state) { | |
// Attempt to read more data if we should. | |
// | |
// The conditions for reading more data are (one of): | |
// - Not enough data buffered (state.length < state.highWaterMark). The loop | |
// is responsible for filling the buffer with enough data if such data | |
// is available. If highWaterMark is 0 and we are not in the flowing mode | |
// we should _not_ attempt to buffer any extra data. We'll get more data | |
// when the stream consumer calls read() instead. | |
// - No data in the buffer, and the stream is in flowing mode. In this mode | |
// the loop below is responsible for ensuring read() is called. Failing to | |
// call read here would abort the flow and there's no other mechanism for | |
// continuing the flow if the stream consumer has just subscribed to the | |
// 'data' event. | |
// | |
// In addition to the above conditions to keep reading data, the following | |
// conditions prevent the data from being read: | |
// - The stream has ended (state.ended). | |
// - There is already a pending 'read' operation (state.reading). This is a | |
// case where the the stream has called the implementation defined _read() | |
// method, but they are processing the call asynchronously and have _not_ | |
// called push() with new data. In this case we skip performing more | |
// read()s. The execution ends in this method again after the _read() ends | |
// up calling push() with more data. | |
while (!state.reading && !state.ended && (state.length < state.highWaterMark || state.flowing && state.length === 0)) { | |
var len = state.length; | |
debug('maybeReadMore read 0'); | |
stream.read(0); | |
if (len === state.length) // didn't get any data, stop spinning. | |
break; | |
} | |
state.readingMore = false; | |
} // abstract method. to be overridden in specific implementation classes. | |
// call cb(er, data) where data is <= n in length. | |
// for virtual (non-string, non-buffer) streams, "length" is somewhat | |
// arbitrary, and perhaps not very meaningful. | |
Readable.prototype._read = function (n) { | |
this.emit('error', new ERR_METHOD_NOT_IMPLEMENTED('_read()')); | |
}; | |
Readable.prototype.pipe = function (dest, pipeOpts) { | |
var src = this; | |
var state = this._readableState; | |
switch (state.pipesCount) { | |
case 0: | |
state.pipes = dest; | |
break; | |
case 1: | |
state.pipes = [state.pipes, dest]; | |
break; | |
default: | |
state.pipes.push(dest); | |
break; | |
} | |
state.pipesCount += 1; | |
debug('pipe count=%d opts=%j', state.pipesCount, pipeOpts); | |
var doEnd = (!pipeOpts || pipeOpts.end !== false) && dest !== process.stdout && dest !== process.stderr; | |
var endFn = doEnd ? onend : unpipe; | |
if (state.endEmitted) process.nextTick(endFn);else src.once('end', endFn); | |
dest.on('unpipe', onunpipe); | |
function onunpipe(readable, unpipeInfo) { | |
debug('onunpipe'); | |
if (readable === src) { | |
if (unpipeInfo && unpipeInfo.hasUnpiped === false) { | |
unpipeInfo.hasUnpiped = true; | |
cleanup(); | |
} | |
} | |
} | |
function onend() { | |
debug('onend'); | |
dest.end(); | |
} // when the dest drains, it reduces the awaitDrain counter | |
// on the source. This would be more elegant with a .once() | |
// handler in flow(), but adding and removing repeatedly is | |
// too slow. | |
var ondrain = pipeOnDrain(src); | |
dest.on('drain', ondrain); | |
var cleanedUp = false; | |
function cleanup() { | |
debug('cleanup'); // cleanup event handlers once the pipe is broken | |
dest.removeListener('close', onclose); | |
dest.removeListener('finish', onfinish); | |
dest.removeListener('drain', ondrain); | |
dest.removeListener('error', onerror); | |
dest.removeListener('unpipe', onunpipe); | |
src.removeListener('end', onend); | |
src.removeListener('end', unpipe); | |
src.removeListener('data', ondata); | |
cleanedUp = true; // if the reader is waiting for a drain event from this | |
// specific writer, then it would cause it to never start | |
// flowing again. | |
// So, if this is awaiting a drain, then we just call it now. | |
// If we don't know, then assume that we are waiting for one. | |
if (state.awaitDrain && (!dest._writableState || dest._writableState.needDrain)) ondrain(); | |
} | |
src.on('data', ondata); | |
function ondata(chunk) { | |
debug('ondata'); | |
var ret = dest.write(chunk); | |
debug('dest.write', ret); | |
if (ret === false) { | |
// If the user unpiped during `dest.write()`, it is possible | |
// to get stuck in a permanently paused state if that write | |
// also returned false. | |
// => Check whether `dest` is still a piping destination. | |
if ((state.pipesCount === 1 && state.pipes === dest || state.pipesCount > 1 && indexOf(state.pipes, dest) !== -1) && !cleanedUp) { | |
debug('false write response, pause', state.awaitDrain); | |
state.awaitDrain++; | |
} | |
src.pause(); | |
} | |
} // if the dest has an error, then stop piping into it. | |
// however, don't suppress the throwing behavior for this. | |
function onerror(er) { | |
debug('onerror', er); | |
unpipe(); | |
dest.removeListener('error', onerror); | |
if (EElistenerCount(dest, 'error') === 0) dest.emit('error', er); | |
} // Make sure our error handler is attached before userland ones. | |
prependListener(dest, 'error', onerror); // Both close and finish should trigger unpipe, but only once. | |
function onclose() { | |
dest.removeListener('finish', onfinish); | |
unpipe(); | |
} | |
dest.once('close', onclose); | |
function onfinish() { | |
debug('onfinish'); | |
dest.removeListener('close', onclose); | |
unpipe(); | |
} | |
dest.once('finish', onfinish); | |
function unpipe() { | |
debug('unpipe'); | |
src.unpipe(dest); | |
} // tell the dest that it's being piped to | |
dest.emit('pipe', src); // start the flow if it hasn't been started already. | |
if (!state.flowing) { | |
debug('pipe resume'); | |
src.resume(); | |
} | |
return dest; | |
}; | |
function pipeOnDrain(src) { | |
return function pipeOnDrainFunctionResult() { | |
var state = src._readableState; | |
debug('pipeOnDrain', state.awaitDrain); | |
if (state.awaitDrain) state.awaitDrain--; | |
if (state.awaitDrain === 0 && EElistenerCount(src, 'data')) { | |
state.flowing = true; | |
flow(src); | |
} | |
}; | |
} | |
Readable.prototype.unpipe = function (dest) { | |
var state = this._readableState; | |
var unpipeInfo = { | |
hasUnpiped: false | |
}; // if we're not piping anywhere, then do nothing. | |
if (state.pipesCount === 0) return this; // just one destination. most common case. | |
if (state.pipesCount === 1) { | |
// passed in one, but it's not the right one. | |
if (dest && dest !== state.pipes) return this; | |
if (!dest) dest = state.pipes; // got a match. | |
state.pipes = null; | |
state.pipesCount = 0; | |
state.flowing = false; | |
if (dest) dest.emit('unpipe', this, unpipeInfo); | |
return this; | |
} // slow case. multiple pipe destinations. | |
if (!dest) { | |
// remove all. | |
var dests = state.pipes; | |
var len = state.pipesCount; | |
state.pipes = null; | |
state.pipesCount = 0; | |
state.flowing = false; | |
for (var i = 0; i < len; i++) { | |
dests[i].emit('unpipe', this, { | |
hasUnpiped: false | |
}); | |
} | |
return this; | |
} // try to find the right one. | |
var index = indexOf(state.pipes, dest); | |
if (index === -1) return this; | |
state.pipes.splice(index, 1); | |
state.pipesCount -= 1; | |
if (state.pipesCount === 1) state.pipes = state.pipes[0]; | |
dest.emit('unpipe', this, unpipeInfo); | |
return this; | |
}; // set up data events if they are asked for | |
// Ensure readable listeners eventually get something | |
Readable.prototype.on = function (ev, fn) { | |
var res = Stream.prototype.on.call(this, ev, fn); | |
var state = this._readableState; | |
if (ev === 'data') { | |
// update readableListening so that resume() may be a no-op | |
// a few lines down. This is needed to support once('readable'). | |
state.readableListening = this.listenerCount('readable') > 0; // Try start flowing on next tick if stream isn't explicitly paused | |
if (state.flowing !== false) this.resume(); | |
} else if (ev === 'readable') { | |
if (!state.endEmitted && !state.readableListening) { | |
state.readableListening = state.needReadable = true; | |
state.flowing = false; | |
state.emittedReadable = false; | |
debug('on readable', state.length, state.reading); | |
if (state.length) { | |
emitReadable(this); | |
} else if (!state.reading) { | |
process.nextTick(nReadingNextTick, this); | |
} | |
} | |
} | |
return res; | |
}; | |
Readable.prototype.addListener = Readable.prototype.on; | |
Readable.prototype.removeListener = function (ev, fn) { | |
var res = Stream.prototype.removeListener.call(this, ev, fn); | |
if (ev === 'readable') { | |
// We need to check if there is someone still listening to | |
// readable and reset the state. However this needs to happen | |
// after readable has been emitted but before I/O (nextTick) to | |
// support once('readable', fn) cycles. This means that calling | |
// resume within the same tick will have no | |
// effect. | |
process.nextTick(updateReadableListening, this); | |
} | |
return res; | |
}; | |
Readable.prototype.removeAllListeners = function (ev) { | |
var res = Stream.prototype.removeAllListeners.apply(this, arguments); | |
if (ev === 'readable' || ev === undefined) { | |
// We need to check if there is someone still listening to | |
// readable and reset the state. However this needs to happen | |
// after readable has been emitted but before I/O (nextTick) to | |
// support once('readable', fn) cycles. This means that calling | |
// resume within the same tick will have no | |
// effect. | |
process.nextTick(updateReadableListening, this); | |
} | |
return res; | |
}; | |
function updateReadableListening(self) { | |
var state = self._readableState; | |
state.readableListening = self.listenerCount('readable') > 0; | |
if (state.resumeScheduled && !state.paused) { | |
// flowing needs to be set to true now, otherwise | |
// the upcoming resume will not flow. | |
state.flowing = true; // crude way to check if we should resume | |
} else if (self.listenerCount('data') > 0) { | |
self.resume(); | |
} | |
} | |
function nReadingNextTick(self) { | |
debug('readable nexttick read 0'); | |
self.read(0); | |
} // pause() and resume() are remnants of the legacy readable stream API | |
// If the user uses them, then switch into old mode. | |
Readable.prototype.resume = function () { | |
var state = this._readableState; | |
if (!state.flowing) { | |
debug('resume'); // we flow only if there is no one listening | |
// for readable, but we still have to call | |
// resume() | |
state.flowing = !state.readableListening; | |
resume(this, state); | |
} | |
state.paused = false; | |
return this; | |
}; | |
function resume(stream, state) { | |
if (!state.resumeScheduled) { | |
state.resumeScheduled = true; | |
process.nextTick(resume_, stream, state); | |
} | |
} | |
function resume_(stream, state) { | |
debug('resume', state.reading); | |
if (!state.reading) { | |
stream.read(0); | |
} | |
state.resumeScheduled = false; | |
stream.emit('resume'); | |
flow(stream); | |
if (state.flowing && !state.reading) stream.read(0); | |
} | |
Readable.prototype.pause = function () { | |
debug('call pause flowing=%j', this._readableState.flowing); | |
if (this._readableState.flowing !== false) { | |
debug('pause'); | |
this._readableState.flowing = false; | |
this.emit('pause'); | |
} | |
this._readableState.paused = true; | |
return this; | |
}; | |
function flow(stream) { | |
var state = stream._readableState; | |
debug('flow', state.flowing); | |
while (state.flowing && stream.read() !== null) { | |
; | |
} | |
} // wrap an old-style stream as the async data source. | |
// This is *not* part of the readable stream interface. | |
// It is an ugly unfortunate mess of history. | |
Readable.prototype.wrap = function (stream) { | |
var _this = this; | |
var state = this._readableState; | |
var paused = false; | |
stream.on('end', function () { | |
debug('wrapped end'); | |
if (state.decoder && !state.ended) { | |
var chunk = state.decoder.end(); | |
if (chunk && chunk.length) _this.push(chunk); | |
} | |
_this.push(null); | |
}); | |
stream.on('data', function (chunk) { | |
debug('wrapped data'); | |
if (state.decoder) chunk = state.decoder.write(chunk); // don't skip over falsy values in objectMode | |
if (state.objectMode && (chunk === null || chunk === undefined)) return;else if (!state.objectMode && (!chunk || !chunk.length)) return; | |
var ret = _this.push(chunk); | |
if (!ret) { | |
paused = true; | |
stream.pause(); | |
} | |
}); // proxy all the other methods. | |
// important when wrapping filters and duplexes. | |
for (var i in stream) { | |
if (this[i] === undefined && typeof stream[i] === 'function') { | |
this[i] = function methodWrap(method) { | |
return function methodWrapReturnFunction() { | |
return stream[method].apply(stream, arguments); | |
}; | |
}(i); | |
} | |
} // proxy certain important events. | |
for (var n = 0; n < kProxyEvents.length; n++) { | |
stream.on(kProxyEvents[n], this.emit.bind(this, kProxyEvents[n])); | |
} // when we try to consume some more bytes, simply unpause the | |
// underlying stream. | |
this._read = function (n) { | |
debug('wrapped _read', n); | |
if (paused) { | |
paused = false; | |
stream.resume(); | |
} | |
}; | |
return this; | |
}; | |
if (typeof Symbol === 'function') { | |
Readable.prototype[Symbol.asyncIterator] = function () { | |
emitExperimentalWarning('Readable[Symbol.asyncIterator]'); | |
if (createReadableStreamAsyncIterator === undefined) { | |
createReadableStreamAsyncIterator = require('./internal/streams/async_iterator'); | |
} | |
return createReadableStreamAsyncIterator(this); | |
}; | |
} | |
Object.defineProperty(Readable.prototype, 'readableHighWaterMark', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._readableState.highWaterMark; | |
} | |
}); | |
Object.defineProperty(Readable.prototype, 'readableBuffer', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._readableState && this._readableState.buffer; | |
} | |
}); | |
Object.defineProperty(Readable.prototype, 'readableFlowing', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._readableState.flowing; | |
}, | |
set: function set(state) { | |
if (this._readableState) { | |
this._readableState.flowing = state; | |
} | |
} | |
}); // exposed for testing purposes only. | |
Readable._fromList = fromList; | |
Object.defineProperty(Readable.prototype, 'readableLength', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._readableState.length; | |
} | |
}); // Pluck off n bytes from an array of buffers. | |
// Length is the combined lengths of all the buffers in the list. | |
// This function is designed to be inlinable, so please take care when making | |
// changes to the function body. | |
function fromList(n, state) { | |
// nothing buffered | |
if (state.length === 0) return null; | |
var ret; | |
if (state.objectMode) ret = state.buffer.shift();else if (!n || n >= state.length) { | |
// read it all, truncate the list | |
if (state.decoder) ret = state.buffer.join('');else if (state.buffer.length === 1) ret = state.buffer.first();else ret = state.buffer.concat(state.length); | |
state.buffer.clear(); | |
} else { | |
// read part of list | |
ret = state.buffer.consume(n, state.decoder); | |
} | |
return ret; | |
} | |
function endReadable(stream) { | |
var state = stream._readableState; | |
debug('endReadable', state.endEmitted); | |
if (!state.endEmitted) { | |
state.ended = true; | |
process.nextTick(endReadableNT, state, stream); | |
} | |
} | |
function endReadableNT(state, stream) { | |
debug('endReadableNT', state.endEmitted, state.length); // Check that we didn't get one last unshift. | |
if (!state.endEmitted && state.length === 0) { | |
state.endEmitted = true; | |
stream.readable = false; | |
stream.emit('end'); | |
} | |
} | |
function indexOf(xs, x) { | |
for (var i = 0, l = xs.length; i < l; i++) { | |
if (xs[i] === x) return i; | |
} | |
return -1; | |
} | |
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
},{"../errors":42,"../experimentalWarning":43,"./_stream_duplex":44,"./internal/streams/async_iterator":49,"./internal/streams/buffer_list":50,"./internal/streams/destroy":51,"./internal/streams/state":54,"./internal/streams/stream":55,"_process":37,"buffer":8,"events":26,"inherits":33,"string_decoder/":69,"util":7}],47:[function(require,module,exports){ | |
// Copyright Joyent, Inc. and other Node contributors. | |
// | |
// Permission is hereby granted, free of charge, to any person obtaining a | |
// copy of this software and associated documentation files (the | |
// "Software"), to deal in the Software without restriction, including | |
// without limitation the rights to use, copy, modify, merge, publish, | |
// distribute, sublicense, and/or sell copies of the Software, and to permit | |
// persons to whom the Software is furnished to do so, subject to the | |
// following conditions: | |
// | |
// The above copyright notice and this permission notice shall be included | |
// in all copies or substantial portions of the Software. | |
// | |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
// USE OR OTHER DEALINGS IN THE SOFTWARE. | |
// a transform stream is a readable/writable stream where you do | |
// something with the data. Sometimes it's called a "filter", | |
// but that's not a great name for it, since that implies a thing where | |
// some bits pass through, and others are simply ignored. (That would | |
// be a valid example of a transform, of course.) | |
// | |
// While the output is causally related to the input, it's not a | |
// necessarily symmetric or synchronous transformation. For example, | |
// a zlib stream might take multiple plain-text writes(), and then | |
// emit a single compressed chunk some time in the future. | |
// | |
// Here's how this works: | |
// | |
// The Transform stream has all the aspects of the readable and writable | |
// stream classes. When you write(chunk), that calls _write(chunk,cb) | |
// internally, and returns false if there's a lot of pending writes | |
// buffered up. When you call read(), that calls _read(n) until | |
// there's enough pending readable data buffered up. | |
// | |
// In a transform stream, the written data is placed in a buffer. When | |
// _read(n) is called, it transforms the queued up data, calling the | |
// buffered _write cb's as it consumes chunks. If consuming a single | |
// written chunk would result in multiple output chunks, then the first | |
// outputted bit calls the readcb, and subsequent chunks just go into | |
// the read buffer, and will cause it to emit 'readable' if necessary. | |
// | |
// This way, back-pressure is actually determined by the reading side, | |
// since _read has to be called to start processing a new chunk. However, | |
// a pathological inflate type of transform can cause excessive buffering | |
// here. For example, imagine a stream where every byte of input is | |
// interpreted as an integer from 0-255, and then results in that many | |
// bytes of output. Writing the 4 bytes {ff,ff,ff,ff} would result in | |
// 1kb of data being output. In this case, you could write a very small | |
// amount of input, and end up with a very large amount of output. In | |
// such a pathological inflating mechanism, there'd be no way to tell | |
// the system to stop doing the transform. A single 4MB write could | |
// cause the system to run out of memory. | |
// | |
// However, even in such a pathological case, only a single written chunk | |
// would be consumed, and then the rest would wait (un-transformed) until | |
// the results of the previous transformed chunk were consumed. | |
'use strict'; | |
module.exports = Transform; | |
var _require$codes = require('../errors').codes, | |
ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED, | |
ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK, | |
ERR_TRANSFORM_ALREADY_TRANSFORMING = _require$codes.ERR_TRANSFORM_ALREADY_TRANSFORMING, | |
ERR_TRANSFORM_WITH_LENGTH_0 = _require$codes.ERR_TRANSFORM_WITH_LENGTH_0; | |
var Duplex = require('./_stream_duplex'); | |
require('inherits')(Transform, Duplex); | |
function afterTransform(er, data) { | |
var ts = this._transformState; | |
ts.transforming = false; | |
var cb = ts.writecb; | |
if (cb === null) { | |
return this.emit('error', new ERR_MULTIPLE_CALLBACK()); | |
} | |
ts.writechunk = null; | |
ts.writecb = null; | |
if (data != null) // single equals check for both `null` and `undefined` | |
this.push(data); | |
cb(er); | |
var rs = this._readableState; | |
rs.reading = false; | |
if (rs.needReadable || rs.length < rs.highWaterMark) { | |
this._read(rs.highWaterMark); | |
} | |
} | |
function Transform(options) { | |
if (!(this instanceof Transform)) return new Transform(options); | |
Duplex.call(this, options); | |
this._transformState = { | |
afterTransform: afterTransform.bind(this), | |
needTransform: false, | |
transforming: false, | |
writecb: null, | |
writechunk: null, | |
writeencoding: null | |
}; // start out asking for a readable event once data is transformed. | |
this._readableState.needReadable = true; // we have implemented the _read method, and done the other things | |
// that Readable wants before the first _read call, so unset the | |
// sync guard flag. | |
this._readableState.sync = false; | |
if (options) { | |
if (typeof options.transform === 'function') this._transform = options.transform; | |
if (typeof options.flush === 'function') this._flush = options.flush; | |
} // When the writable side finishes, then flush out anything remaining. | |
this.on('prefinish', prefinish); | |
} | |
function prefinish() { | |
var _this = this; | |
if (typeof this._flush === 'function' && !this._readableState.destroyed) { | |
this._flush(function (er, data) { | |
done(_this, er, data); | |
}); | |
} else { | |
done(this, null, null); | |
} | |
} | |
Transform.prototype.push = function (chunk, encoding) { | |
this._transformState.needTransform = false; | |
return Duplex.prototype.push.call(this, chunk, encoding); | |
}; // This is the part where you do stuff! | |
// override this function in implementation classes. | |
// 'chunk' is an input chunk. | |
// | |
// Call `push(newChunk)` to pass along transformed output | |
// to the readable side. You may call 'push' zero or more times. | |
// | |
// Call `cb(err)` when you are done with this chunk. If you pass | |
// an error, then that'll put the hurt on the whole operation. If you | |
// never call cb(), then you'll never get another chunk. | |
Transform.prototype._transform = function (chunk, encoding, cb) { | |
cb(new ERR_METHOD_NOT_IMPLEMENTED('_transform()')); | |
}; | |
Transform.prototype._write = function (chunk, encoding, cb) { | |
var ts = this._transformState; | |
ts.writecb = cb; | |
ts.writechunk = chunk; | |
ts.writeencoding = encoding; | |
if (!ts.transforming) { | |
var rs = this._readableState; | |
if (ts.needTransform || rs.needReadable || rs.length < rs.highWaterMark) this._read(rs.highWaterMark); | |
} | |
}; // Doesn't matter what the args are here. | |
// _transform does all the work. | |
// That we got here means that the readable side wants more data. | |
Transform.prototype._read = function (n) { | |
var ts = this._transformState; | |
if (ts.writechunk !== null && !ts.transforming) { | |
ts.transforming = true; | |
this._transform(ts.writechunk, ts.writeencoding, ts.afterTransform); | |
} else { | |
// mark that we need a transform, so that any data that comes in | |
// will get processed, now that we've asked for it. | |
ts.needTransform = true; | |
} | |
}; | |
Transform.prototype._destroy = function (err, cb) { | |
Duplex.prototype._destroy.call(this, err, function (err2) { | |
cb(err2); | |
}); | |
}; | |
function done(stream, er, data) { | |
if (er) return stream.emit('error', er); | |
if (data != null) // single equals check for both `null` and `undefined` | |
stream.push(data); // TODO(BridgeAR): Write a test for these two error cases | |
// if there's nothing in the write buffer, then that means | |
// that nothing more will ever be provided | |
if (stream._writableState.length) throw new ERR_TRANSFORM_WITH_LENGTH_0(); | |
if (stream._transformState.transforming) throw new ERR_TRANSFORM_ALREADY_TRANSFORMING(); | |
return stream.push(null); | |
} | |
},{"../errors":42,"./_stream_duplex":44,"inherits":33}],48:[function(require,module,exports){ | |
(function (process,global){ | |
// Copyright Joyent, Inc. and other Node contributors. | |
// | |
// Permission is hereby granted, free of charge, to any person obtaining a | |
// copy of this software and associated documentation files (the | |
// "Software"), to deal in the Software without restriction, including | |
// without limitation the rights to use, copy, modify, merge, publish, | |
// distribute, sublicense, and/or sell copies of the Software, and to permit | |
// persons to whom the Software is furnished to do so, subject to the | |
// following conditions: | |
// | |
// The above copyright notice and this permission notice shall be included | |
// in all copies or substantial portions of the Software. | |
// | |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
// USE OR OTHER DEALINGS IN THE SOFTWARE. | |
// A bit simpler than readable streams. | |
// Implement an async ._write(chunk, encoding, cb), and it'll handle all | |
// the drain event emission and buffering. | |
'use strict'; | |
module.exports = Writable; | |
/* <replacement> */ | |
function WriteReq(chunk, encoding, cb) { | |
this.chunk = chunk; | |
this.encoding = encoding; | |
this.callback = cb; | |
this.next = null; | |
} // It seems a linked list but it is not | |
// there will be only 2 of these for each stream | |
function CorkedRequest(state) { | |
var _this = this; | |
this.next = null; | |
this.entry = null; | |
this.finish = function () { | |
onCorkedFinish(_this, state); | |
}; | |
} | |
/* </replacement> */ | |
/*<replacement>*/ | |
var Duplex; | |
/*</replacement>*/ | |
Writable.WritableState = WritableState; | |
/*<replacement>*/ | |
var internalUtil = { | |
deprecate: require('util-deprecate') | |
}; | |
/*</replacement>*/ | |
/*<replacement>*/ | |
var Stream = require('./internal/streams/stream'); | |
/*</replacement>*/ | |
var Buffer = require('buffer').Buffer; | |
var OurUint8Array = global.Uint8Array || function () {}; | |
function _uint8ArrayToBuffer(chunk) { | |
return Buffer.from(chunk); | |
} | |
function _isUint8Array(obj) { | |
return Buffer.isBuffer(obj) || obj instanceof OurUint8Array; | |
} | |
var destroyImpl = require('./internal/streams/destroy'); | |
var _require = require('./internal/streams/state'), | |
getHighWaterMark = _require.getHighWaterMark; | |
var _require$codes = require('../errors').codes, | |
ERR_INVALID_ARG_TYPE = _require$codes.ERR_INVALID_ARG_TYPE, | |
ERR_METHOD_NOT_IMPLEMENTED = _require$codes.ERR_METHOD_NOT_IMPLEMENTED, | |
ERR_MULTIPLE_CALLBACK = _require$codes.ERR_MULTIPLE_CALLBACK, | |
ERR_STREAM_CANNOT_PIPE = _require$codes.ERR_STREAM_CANNOT_PIPE, | |
ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED, | |
ERR_STREAM_NULL_VALUES = _require$codes.ERR_STREAM_NULL_VALUES, | |
ERR_STREAM_WRITE_AFTER_END = _require$codes.ERR_STREAM_WRITE_AFTER_END, | |
ERR_UNKNOWN_ENCODING = _require$codes.ERR_UNKNOWN_ENCODING; | |
require('inherits')(Writable, Stream); | |
function nop() {} | |
function WritableState(options, stream, isDuplex) { | |
Duplex = Duplex || require('./_stream_duplex'); | |
options = options || {}; // Duplex streams are both readable and writable, but share | |
// the same options object. | |
// However, some cases require setting options to different | |
// values for the readable and the writable sides of the duplex stream, | |
// e.g. options.readableObjectMode vs. options.writableObjectMode, etc. | |
if (typeof isDuplex !== 'boolean') isDuplex = stream instanceof Duplex; // object stream flag to indicate whether or not this stream | |
// contains buffers or objects. | |
this.objectMode = !!options.objectMode; | |
if (isDuplex) this.objectMode = this.objectMode || !!options.writableObjectMode; // the point at which write() starts returning false | |
// Note: 0 is a valid value, means that we always return false if | |
// the entire buffer is not flushed immediately on write() | |
this.highWaterMark = getHighWaterMark(this, options, 'writableHighWaterMark', isDuplex); // if _final has been called | |
this.finalCalled = false; // drain event flag. | |
this.needDrain = false; // at the start of calling end() | |
this.ending = false; // when end() has been called, and returned | |
this.ended = false; // when 'finish' is emitted | |
this.finished = false; // has it been destroyed | |
this.destroyed = false; // should we decode strings into buffers before passing to _write? | |
// this is here so that some node-core streams can optimize string | |
// handling at a lower level. | |
var noDecode = options.decodeStrings === false; | |
this.decodeStrings = !noDecode; // Crypto is kind of old and crusty. Historically, its default string | |
// encoding is 'binary' so we have to make this configurable. | |
// Everything else in the universe uses 'utf8', though. | |
this.defaultEncoding = options.defaultEncoding || 'utf8'; // not an actual buffer we keep track of, but a measurement | |
// of how much we're waiting to get pushed to some underlying | |
// socket or file. | |
this.length = 0; // a flag to see when we're in the middle of a write. | |
this.writing = false; // when true all writes will be buffered until .uncork() call | |
this.corked = 0; // a flag to be able to tell if the onwrite cb is called immediately, | |
// or on a later tick. We set this to true at first, because any | |
// actions that shouldn't happen until "later" should generally also | |
// not happen before the first write call. | |
this.sync = true; // a flag to know if we're processing previously buffered items, which | |
// may call the _write() callback in the same tick, so that we don't | |
// end up in an overlapped onwrite situation. | |
this.bufferProcessing = false; // the callback that's passed to _write(chunk,cb) | |
this.onwrite = function (er) { | |
onwrite(stream, er); | |
}; // the callback that the user supplies to write(chunk,encoding,cb) | |
this.writecb = null; // the amount that is being written when _write is called. | |
this.writelen = 0; | |
this.bufferedRequest = null; | |
this.lastBufferedRequest = null; // number of pending user-supplied write callbacks | |
// this must be 0 before 'finish' can be emitted | |
this.pendingcb = 0; // emit prefinish if the only thing we're waiting for is _write cbs | |
// This is relevant for synchronous Transform streams | |
this.prefinished = false; // True if the error was already emitted and should not be thrown again | |
this.errorEmitted = false; // Should close be emitted on destroy. Defaults to true. | |
this.emitClose = options.emitClose !== false; // count buffered requests | |
this.bufferedRequestCount = 0; // allocate the first CorkedRequest, there is always | |
// one allocated and free to use, and we maintain at most two | |
this.corkedRequestsFree = new CorkedRequest(this); | |
} | |
WritableState.prototype.getBuffer = function getBuffer() { | |
var current = this.bufferedRequest; | |
var out = []; | |
while (current) { | |
out.push(current); | |
current = current.next; | |
} | |
return out; | |
}; | |
(function () { | |
try { | |
Object.defineProperty(WritableState.prototype, 'buffer', { | |
get: internalUtil.deprecate(function writableStateBufferGetter() { | |
return this.getBuffer(); | |
}, '_writableState.buffer is deprecated. Use _writableState.getBuffer ' + 'instead.', 'DEP0003') | |
}); | |
} catch (_) {} | |
})(); // Test _writableState for inheritance to account for Duplex streams, | |
// whose prototype chain only points to Readable. | |
var realHasInstance; | |
if (typeof Symbol === 'function' && Symbol.hasInstance && typeof Function.prototype[Symbol.hasInstance] === 'function') { | |
realHasInstance = Function.prototype[Symbol.hasInstance]; | |
Object.defineProperty(Writable, Symbol.hasInstance, { | |
value: function value(object) { | |
if (realHasInstance.call(this, object)) return true; | |
if (this !== Writable) return false; | |
return object && object._writableState instanceof WritableState; | |
} | |
}); | |
} else { | |
realHasInstance = function realHasInstance(object) { | |
return object instanceof this; | |
}; | |
} | |
function Writable(options) { | |
Duplex = Duplex || require('./_stream_duplex'); // Writable ctor is applied to Duplexes, too. | |
// `realHasInstance` is necessary because using plain `instanceof` | |
// would return false, as no `_writableState` property is attached. | |
// Trying to use the custom `instanceof` for Writable here will also break the | |
// Node.js LazyTransform implementation, which has a non-trivial getter for | |
// `_writableState` that would lead to infinite recursion. | |
// Checking for a Stream.Duplex instance is faster here instead of inside | |
// the WritableState constructor, at least with V8 6.5 | |
var isDuplex = this instanceof Duplex; | |
if (!isDuplex && !realHasInstance.call(Writable, this)) return new Writable(options); | |
this._writableState = new WritableState(options, this, isDuplex); // legacy. | |
this.writable = true; | |
if (options) { | |
if (typeof options.write === 'function') this._write = options.write; | |
if (typeof options.writev === 'function') this._writev = options.writev; | |
if (typeof options.destroy === 'function') this._destroy = options.destroy; | |
if (typeof options.final === 'function') this._final = options.final; | |
} | |
Stream.call(this); | |
} // Otherwise people can pipe Writable streams, which is just wrong. | |
Writable.prototype.pipe = function () { | |
this.emit('error', new ERR_STREAM_CANNOT_PIPE()); | |
}; | |
function writeAfterEnd(stream, cb) { | |
var er = new ERR_STREAM_WRITE_AFTER_END(); // TODO: defer error events consistently everywhere, not just the cb | |
stream.emit('error', er); | |
process.nextTick(cb, er); | |
} // Checks that a user-supplied chunk is valid, especially for the particular | |
// mode the stream is in. Currently this means that `null` is never accepted | |
// and undefined/non-string values are only allowed in object mode. | |
function validChunk(stream, state, chunk, cb) { | |
var er; | |
if (chunk === null) { | |
er = new ERR_STREAM_NULL_VALUES(); | |
} else if (typeof chunk !== 'string' && !state.objectMode) { | |
er = new ERR_INVALID_ARG_TYPE('chunk', ['string', 'Buffer'], chunk); | |
} | |
if (er) { | |
stream.emit('error', er); | |
process.nextTick(cb, er); | |
return false; | |
} | |
return true; | |
} | |
Writable.prototype.write = function (chunk, encoding, cb) { | |
var state = this._writableState; | |
var ret = false; | |
var isBuf = !state.objectMode && _isUint8Array(chunk); | |
if (isBuf && !Buffer.isBuffer(chunk)) { | |
chunk = _uint8ArrayToBuffer(chunk); | |
} | |
if (typeof encoding === 'function') { | |
cb = encoding; | |
encoding = null; | |
} | |
if (isBuf) encoding = 'buffer';else if (!encoding) encoding = state.defaultEncoding; | |
if (typeof cb !== 'function') cb = nop; | |
if (state.ending) writeAfterEnd(this, cb);else if (isBuf || validChunk(this, state, chunk, cb)) { | |
state.pendingcb++; | |
ret = writeOrBuffer(this, state, isBuf, chunk, encoding, cb); | |
} | |
return ret; | |
}; | |
Writable.prototype.cork = function () { | |
this._writableState.corked++; | |
}; | |
Writable.prototype.uncork = function () { | |
var state = this._writableState; | |
if (state.corked) { | |
state.corked--; | |
if (!state.writing && !state.corked && !state.bufferProcessing && state.bufferedRequest) clearBuffer(this, state); | |
} | |
}; | |
Writable.prototype.setDefaultEncoding = function setDefaultEncoding(encoding) { | |
// node::ParseEncoding() requires lower case. | |
if (typeof encoding === 'string') encoding = encoding.toLowerCase(); | |
if (!(['hex', 'utf8', 'utf-8', 'ascii', 'binary', 'base64', 'ucs2', 'ucs-2', 'utf16le', 'utf-16le', 'raw'].indexOf((encoding + '').toLowerCase()) > -1)) throw new ERR_UNKNOWN_ENCODING(encoding); | |
this._writableState.defaultEncoding = encoding; | |
return this; | |
}; | |
Object.defineProperty(Writable.prototype, 'writableBuffer', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._writableState && this._writableState.getBuffer(); | |
} | |
}); | |
function decodeChunk(state, chunk, encoding) { | |
if (!state.objectMode && state.decodeStrings !== false && typeof chunk === 'string') { | |
chunk = Buffer.from(chunk, encoding); | |
} | |
return chunk; | |
} | |
Object.defineProperty(Writable.prototype, 'writableHighWaterMark', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._writableState.highWaterMark; | |
} | |
}); // if we're already writing something, then just put this | |
// in the queue, and wait our turn. Otherwise, call _write | |
// If we return false, then we need a drain event, so set that flag. | |
function writeOrBuffer(stream, state, isBuf, chunk, encoding, cb) { | |
if (!isBuf) { | |
var newChunk = decodeChunk(state, chunk, encoding); | |
if (chunk !== newChunk) { | |
isBuf = true; | |
encoding = 'buffer'; | |
chunk = newChunk; | |
} | |
} | |
var len = state.objectMode ? 1 : chunk.length; | |
state.length += len; | |
var ret = state.length < state.highWaterMark; // we must ensure that previous needDrain will not be reset to false. | |
if (!ret) state.needDrain = true; | |
if (state.writing || state.corked) { | |
var last = state.lastBufferedRequest; | |
state.lastBufferedRequest = { | |
chunk: chunk, | |
encoding: encoding, | |
isBuf: isBuf, | |
callback: cb, | |
next: null | |
}; | |
if (last) { | |
last.next = state.lastBufferedRequest; | |
} else { | |
state.bufferedRequest = state.lastBufferedRequest; | |
} | |
state.bufferedRequestCount += 1; | |
} else { | |
doWrite(stream, state, false, len, chunk, encoding, cb); | |
} | |
return ret; | |
} | |
function doWrite(stream, state, writev, len, chunk, encoding, cb) { | |
state.writelen = len; | |
state.writecb = cb; | |
state.writing = true; | |
state.sync = true; | |
if (state.destroyed) state.onwrite(new ERR_STREAM_DESTROYED('write'));else if (writev) stream._writev(chunk, state.onwrite);else stream._write(chunk, encoding, state.onwrite); | |
state.sync = false; | |
} | |
function onwriteError(stream, state, sync, er, cb) { | |
--state.pendingcb; | |
if (sync) { | |
// defer the callback if we are being called synchronously | |
// to avoid piling up things on the stack | |
process.nextTick(cb, er); // this can emit finish, and it will always happen | |
// after error | |
process.nextTick(finishMaybe, stream, state); | |
stream._writableState.errorEmitted = true; | |
stream.emit('error', er); | |
} else { | |
// the caller expect this to happen before if | |
// it is async | |
cb(er); | |
stream._writableState.errorEmitted = true; | |
stream.emit('error', er); // this can emit finish, but finish must | |
// always follow error | |
finishMaybe(stream, state); | |
} | |
} | |
function onwriteStateUpdate(state) { | |
state.writing = false; | |
state.writecb = null; | |
state.length -= state.writelen; | |
state.writelen = 0; | |
} | |
function onwrite(stream, er) { | |
var state = stream._writableState; | |
var sync = state.sync; | |
var cb = state.writecb; | |
if (typeof cb !== 'function') throw new ERR_MULTIPLE_CALLBACK(); | |
onwriteStateUpdate(state); | |
if (er) onwriteError(stream, state, sync, er, cb);else { | |
// Check if we're actually ready to finish, but don't emit yet | |
var finished = needFinish(state) || stream.destroyed; | |
if (!finished && !state.corked && !state.bufferProcessing && state.bufferedRequest) { | |
clearBuffer(stream, state); | |
} | |
if (sync) { | |
process.nextTick(afterWrite, stream, state, finished, cb); | |
} else { | |
afterWrite(stream, state, finished, cb); | |
} | |
} | |
} | |
function afterWrite(stream, state, finished, cb) { | |
if (!finished) onwriteDrain(stream, state); | |
state.pendingcb--; | |
cb(); | |
finishMaybe(stream, state); | |
} // Must force callback to be called on nextTick, so that we don't | |
// emit 'drain' before the write() consumer gets the 'false' return | |
// value, and has a chance to attach a 'drain' listener. | |
function onwriteDrain(stream, state) { | |
if (state.length === 0 && state.needDrain) { | |
state.needDrain = false; | |
stream.emit('drain'); | |
} | |
} // if there's something in the buffer waiting, then process it | |
function clearBuffer(stream, state) { | |
state.bufferProcessing = true; | |
var entry = state.bufferedRequest; | |
if (stream._writev && entry && entry.next) { | |
// Fast case, write everything using _writev() | |
var l = state.bufferedRequestCount; | |
var buffer = new Array(l); | |
var holder = state.corkedRequestsFree; | |
holder.entry = entry; | |
var count = 0; | |
var allBuffers = true; | |
while (entry) { | |
buffer[count] = entry; | |
if (!entry.isBuf) allBuffers = false; | |
entry = entry.next; | |
count += 1; | |
} | |
buffer.allBuffers = allBuffers; | |
doWrite(stream, state, true, state.length, buffer, '', holder.finish); // doWrite is almost always async, defer these to save a bit of time | |
// as the hot path ends with doWrite | |
state.pendingcb++; | |
state.lastBufferedRequest = null; | |
if (holder.next) { | |
state.corkedRequestsFree = holder.next; | |
holder.next = null; | |
} else { | |
state.corkedRequestsFree = new CorkedRequest(state); | |
} | |
state.bufferedRequestCount = 0; | |
} else { | |
// Slow case, write chunks one-by-one | |
while (entry) { | |
var chunk = entry.chunk; | |
var encoding = entry.encoding; | |
var cb = entry.callback; | |
var len = state.objectMode ? 1 : chunk.length; | |
doWrite(stream, state, false, len, chunk, encoding, cb); | |
entry = entry.next; | |
state.bufferedRequestCount--; // if we didn't call the onwrite immediately, then | |
// it means that we need to wait until it does. | |
// also, that means that the chunk and cb are currently | |
// being processed, so move the buffer counter past them. | |
if (state.writing) { | |
break; | |
} | |
} | |
if (entry === null) state.lastBufferedRequest = null; | |
} | |
state.bufferedRequest = entry; | |
state.bufferProcessing = false; | |
} | |
Writable.prototype._write = function (chunk, encoding, cb) { | |
cb(new ERR_METHOD_NOT_IMPLEMENTED('_write()')); | |
}; | |
Writable.prototype._writev = null; | |
Writable.prototype.end = function (chunk, encoding, cb) { | |
var state = this._writableState; | |
if (typeof chunk === 'function') { | |
cb = chunk; | |
chunk = null; | |
encoding = null; | |
} else if (typeof encoding === 'function') { | |
cb = encoding; | |
encoding = null; | |
} | |
if (chunk !== null && chunk !== undefined) this.write(chunk, encoding); // .end() fully uncorks | |
if (state.corked) { | |
state.corked = 1; | |
this.uncork(); | |
} // ignore unnecessary end() calls. | |
if (!state.ending) endWritable(this, state, cb); | |
return this; | |
}; | |
Object.defineProperty(Writable.prototype, 'writableLength', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
return this._writableState.length; | |
} | |
}); | |
function needFinish(state) { | |
return state.ending && state.length === 0 && state.bufferedRequest === null && !state.finished && !state.writing; | |
} | |
function callFinal(stream, state) { | |
stream._final(function (err) { | |
state.pendingcb--; | |
if (err) { | |
stream.emit('error', err); | |
} | |
state.prefinished = true; | |
stream.emit('prefinish'); | |
finishMaybe(stream, state); | |
}); | |
} | |
function prefinish(stream, state) { | |
if (!state.prefinished && !state.finalCalled) { | |
if (typeof stream._final === 'function' && !state.destroyed) { | |
state.pendingcb++; | |
state.finalCalled = true; | |
process.nextTick(callFinal, stream, state); | |
} else { | |
state.prefinished = true; | |
stream.emit('prefinish'); | |
} | |
} | |
} | |
function finishMaybe(stream, state) { | |
var need = needFinish(state); | |
if (need) { | |
prefinish(stream, state); | |
if (state.pendingcb === 0) { | |
state.finished = true; | |
stream.emit('finish'); | |
} | |
} | |
return need; | |
} | |
function endWritable(stream, state, cb) { | |
state.ending = true; | |
finishMaybe(stream, state); | |
if (cb) { | |
if (state.finished) process.nextTick(cb);else stream.once('finish', cb); | |
} | |
state.ended = true; | |
stream.writable = false; | |
} | |
function onCorkedFinish(corkReq, state, err) { | |
var entry = corkReq.entry; | |
corkReq.entry = null; | |
while (entry) { | |
var cb = entry.callback; | |
state.pendingcb--; | |
cb(err); | |
entry = entry.next; | |
} // reuse the free corkReq. | |
state.corkedRequestsFree.next = corkReq; | |
} | |
Object.defineProperty(Writable.prototype, 'destroyed', { | |
// making it explicit this property is not enumerable | |
// because otherwise some prototype manipulation in | |
// userland will fail | |
enumerable: false, | |
get: function get() { | |
if (this._writableState === undefined) { | |
return false; | |
} | |
return this._writableState.destroyed; | |
}, | |
set: function set(value) { | |
// we ignore the value if the stream | |
// has not been initialized yet | |
if (!this._writableState) { | |
return; | |
} // backward compatibility, the user is explicitly | |
// managing destroyed | |
this._writableState.destroyed = value; | |
} | |
}); | |
Writable.prototype.destroy = destroyImpl.destroy; | |
Writable.prototype._undestroy = destroyImpl.undestroy; | |
Writable.prototype._destroy = function (err, cb) { | |
cb(err); | |
}; | |
}).call(this,require('_process'),typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
},{"../errors":42,"./_stream_duplex":44,"./internal/streams/destroy":51,"./internal/streams/state":54,"./internal/streams/stream":55,"_process":37,"buffer":8,"inherits":33,"util-deprecate":71}],49:[function(require,module,exports){ | |
(function (process){ | |
'use strict'; | |
var _Object$setPrototypeO; | |
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } | |
var finished = require('./end-of-stream'); | |
var kLastResolve = Symbol('lastResolve'); | |
var kLastReject = Symbol('lastReject'); | |
var kError = Symbol('error'); | |
var kEnded = Symbol('ended'); | |
var kLastPromise = Symbol('lastPromise'); | |
var kHandlePromise = Symbol('handlePromise'); | |
var kStream = Symbol('stream'); | |
function createIterResult(value, done) { | |
return { | |
value: value, | |
done: done | |
}; | |
} | |
function readAndResolve(iter) { | |
var resolve = iter[kLastResolve]; | |
if (resolve !== null) { | |
var data = iter[kStream].read(); // we defer if data is null | |
// we can be expecting either 'end' or | |
// 'error' | |
if (data !== null) { | |
iter[kLastPromise] = null; | |
iter[kLastResolve] = null; | |
iter[kLastReject] = null; | |
resolve(createIterResult(data, false)); | |
} | |
} | |
} | |
function onReadable(iter) { | |
// we wait for the next tick, because it might | |
// emit an error with process.nextTick | |
process.nextTick(readAndResolve, iter); | |
} | |
function wrapForNext(lastPromise, iter) { | |
return function (resolve, reject) { | |
lastPromise.then(function () { | |
if (iter[kEnded]) { | |
resolve(createIterResult(undefined, true)); | |
return; | |
} | |
iter[kHandlePromise](resolve, reject); | |
}, reject); | |
}; | |
} | |
var AsyncIteratorPrototype = Object.getPrototypeOf(function () {}); | |
var ReadableStreamAsyncIteratorPrototype = Object.setPrototypeOf((_Object$setPrototypeO = { | |
get stream() { | |
return this[kStream]; | |
}, | |
next: function next() { | |
var _this = this; | |
// if we have detected an error in the meanwhile | |
// reject straight away | |
var error = this[kError]; | |
if (error !== null) { | |
return Promise.reject(error); | |
} | |
if (this[kEnded]) { | |
return Promise.resolve(createIterResult(undefined, true)); | |
} | |
if (this[kStream].destroyed) { | |
// We need to defer via nextTick because if .destroy(err) is | |
// called, the error will be emitted via nextTick, and | |
// we cannot guarantee that there is no error lingering around | |
// waiting to be emitted. | |
return new Promise(function (resolve, reject) { | |
process.nextTick(function () { | |
if (_this[kError]) { | |
reject(_this[kError]); | |
} else { | |
resolve(createIterResult(undefined, true)); | |
} | |
}); | |
}); | |
} // if we have multiple next() calls | |
// we will wait for the previous Promise to finish | |
// this logic is optimized to support for await loops, | |
// where next() is only called once at a time | |
var lastPromise = this[kLastPromise]; | |
var promise; | |
if (lastPromise) { | |
promise = new Promise(wrapForNext(lastPromise, this)); | |
} else { | |
// fast path needed to support multiple this.push() | |
// without triggering the next() queue | |
var data = this[kStream].read(); | |
if (data !== null) { | |
return Promise.resolve(createIterResult(data, false)); | |
} | |
promise = new Promise(this[kHandlePromise]); | |
} | |
this[kLastPromise] = promise; | |
return promise; | |
} | |
}, _defineProperty(_Object$setPrototypeO, Symbol.asyncIterator, function () { | |
return this; | |
}), _defineProperty(_Object$setPrototypeO, "return", function _return() { | |
var _this2 = this; | |
// destroy(err, cb) is a private API | |
// we can guarantee we have that here, because we control the | |
// Readable class this is attached to | |
return new Promise(function (resolve, reject) { | |
_this2[kStream].destroy(null, function (err) { | |
if (err) { | |
reject(err); | |
return; | |
} | |
resolve(createIterResult(undefined, true)); | |
}); | |
}); | |
}), _Object$setPrototypeO), AsyncIteratorPrototype); | |
var createReadableStreamAsyncIterator = function createReadableStreamAsyncIterator(stream) { | |
var _Object$create; | |
var iterator = Object.create(ReadableStreamAsyncIteratorPrototype, (_Object$create = {}, _defineProperty(_Object$create, kStream, { | |
value: stream, | |
writable: true | |
}), _defineProperty(_Object$create, kLastResolve, { | |
value: null, | |
writable: true | |
}), _defineProperty(_Object$create, kLastReject, { | |
value: null, | |
writable: true | |
}), _defineProperty(_Object$create, kError, { | |
value: null, | |
writable: true | |
}), _defineProperty(_Object$create, kEnded, { | |
value: stream._readableState.endEmitted, | |
writable: true | |
}), _defineProperty(_Object$create, kHandlePromise, { | |
value: function value(resolve, reject) { | |
var data = iterator[kStream].read(); | |
if (data) { | |
iterator[kLastPromise] = null; | |
iterator[kLastResolve] = null; | |
iterator[kLastReject] = null; | |
resolve(createIterResult(data, false)); | |
} else { | |
iterator[kLastResolve] = resolve; | |
iterator[kLastReject] = reject; | |
} | |
}, | |
writable: true | |
}), _Object$create)); | |
iterator[kLastPromise] = null; | |
finished(stream, function (err) { | |
if (err && err.code !== 'ERR_STREAM_PREMATURE_CLOSE') { | |
var reject = iterator[kLastReject]; // reject if we are waiting for data in the Promise | |
// returned by next() and store the error | |
if (reject !== null) { | |
iterator[kLastPromise] = null; | |
iterator[kLastResolve] = null; | |
iterator[kLastReject] = null; | |
reject(err); | |
} | |
iterator[kError] = err; | |
return; | |
} | |
var resolve = iterator[kLastResolve]; | |
if (resolve !== null) { | |
iterator[kLastPromise] = null; | |
iterator[kLastResolve] = null; | |
iterator[kLastReject] = null; | |
resolve(createIterResult(undefined, true)); | |
} | |
iterator[kEnded] = true; | |
}); | |
stream.on('readable', onReadable.bind(null, iterator)); | |
return iterator; | |
}; | |
module.exports = createReadableStreamAsyncIterator; | |
}).call(this,require('_process')) | |
},{"./end-of-stream":52,"_process":37}],50:[function(require,module,exports){ | |
'use strict'; | |
function _objectSpread(target) { for (var i = 1; i < arguments.length; i++) { var source = arguments[i] != null ? arguments[i] : {}; var ownKeys = Object.keys(source); if (typeof Object.getOwnPropertySymbols === 'function') { ownKeys = ownKeys.concat(Object.getOwnPropertySymbols(source).filter(function (sym) { return Object.getOwnPropertyDescriptor(source, sym).enumerable; })); } ownKeys.forEach(function (key) { _defineProperty(target, key, source[key]); }); } return target; } | |
function _defineProperty(obj, key, value) { if (key in obj) { Object.defineProperty(obj, key, { value: value, enumerable: true, configurable: true, writable: true }); } else { obj[key] = value; } return obj; } | |
var _require = require('buffer'), | |
Buffer = _require.Buffer; | |
var _require2 = require('util'), | |
inspect = _require2.inspect; | |
var custom = inspect && inspect.custom || 'inspect'; | |
function copyBuffer(src, target, offset) { | |
Buffer.prototype.copy.call(src, target, offset); | |
} | |
module.exports = | |
/*#__PURE__*/ | |
function () { | |
function BufferList() { | |
this.head = null; | |
this.tail = null; | |
this.length = 0; | |
} | |
var _proto = BufferList.prototype; | |
_proto.push = function push(v) { | |
var entry = { | |
data: v, | |
next: null | |
}; | |
if (this.length > 0) this.tail.next = entry;else this.head = entry; | |
this.tail = entry; | |
++this.length; | |
}; | |
_proto.unshift = function unshift(v) { | |
var entry = { | |
data: v, | |
next: this.head | |
}; | |
if (this.length === 0) this.tail = entry; | |
this.head = entry; | |
++this.length; | |
}; | |
_proto.shift = function shift() { | |
if (this.length === 0) return; | |
var ret = this.head.data; | |
if (this.length === 1) this.head = this.tail = null;else this.head = this.head.next; | |
--this.length; | |
return ret; | |
}; | |
_proto.clear = function clear() { | |
this.head = this.tail = null; | |
this.length = 0; | |
}; | |
_proto.join = function join(s) { | |
if (this.length === 0) return ''; | |
var p = this.head; | |
var ret = '' + p.data; | |
while (p = p.next) { | |
ret += s + p.data; | |
} | |
return ret; | |
}; | |
_proto.concat = function concat(n) { | |
if (this.length === 0) return Buffer.alloc(0); | |
var ret = Buffer.allocUnsafe(n >>> 0); | |
var p = this.head; | |
var i = 0; | |
while (p) { | |
copyBuffer(p.data, ret, i); | |
i += p.data.length; | |
p = p.next; | |
} | |
return ret; | |
} // Consumes a specified amount of bytes or characters from the buffered data. | |
; | |
_proto.consume = function consume(n, hasStrings) { | |
var ret; | |
if (n < this.head.data.length) { | |
// `slice` is the same for buffers and strings. | |
ret = this.head.data.slice(0, n); | |
this.head.data = this.head.data.slice(n); | |
} else if (n === this.head.data.length) { | |
// First chunk is a perfect match. | |
ret = this.shift(); | |
} else { | |
// Result spans more than one buffer. | |
ret = hasStrings ? this._getString(n) : this._getBuffer(n); | |
} | |
return ret; | |
}; | |
_proto.first = function first() { | |
return this.head.data; | |
} // Consumes a specified amount of characters from the buffered data. | |
; | |
_proto._getString = function _getString(n) { | |
var p = this.head; | |
var c = 1; | |
var ret = p.data; | |
n -= ret.length; | |
while (p = p.next) { | |
var str = p.data; | |
var nb = n > str.length ? str.length : n; | |
if (nb === str.length) ret += str;else ret += str.slice(0, n); | |
n -= nb; | |
if (n === 0) { | |
if (nb === str.length) { | |
++c; | |
if (p.next) this.head = p.next;else this.head = this.tail = null; | |
} else { | |
this.head = p; | |
p.data = str.slice(nb); | |
} | |
break; | |
} | |
++c; | |
} | |
this.length -= c; | |
return ret; | |
} // Consumes a specified amount of bytes from the buffered data. | |
; | |
_proto._getBuffer = function _getBuffer(n) { | |
var ret = Buffer.allocUnsafe(n); | |
var p = this.head; | |
var c = 1; | |
p.data.copy(ret); | |
n -= p.data.length; | |
while (p = p.next) { | |
var buf = p.data; | |
var nb = n > buf.length ? buf.length : n; | |
buf.copy(ret, ret.length - n, 0, nb); | |
n -= nb; | |
if (n === 0) { | |
if (nb === buf.length) { | |
++c; | |
if (p.next) this.head = p.next;else this.head = this.tail = null; | |
} else { | |
this.head = p; | |
p.data = buf.slice(nb); | |
} | |
break; | |
} | |
++c; | |
} | |
this.length -= c; | |
return ret; | |
} // Make sure the linked list only shows the minimal necessary information. | |
; | |
_proto[custom] = function (_, options) { | |
return inspect(this, _objectSpread({}, options, { | |
// Only inspect one level. | |
depth: 0, | |
// It should not recurse. | |
customInspect: false | |
})); | |
}; | |
return BufferList; | |
}(); | |
},{"buffer":8,"util":7}],51:[function(require,module,exports){ | |
(function (process){ | |
'use strict'; // undocumented cb() API, needed for core, not for public API | |
function destroy(err, cb) { | |
var _this = this; | |
var readableDestroyed = this._readableState && this._readableState.destroyed; | |
var writableDestroyed = this._writableState && this._writableState.destroyed; | |
if (readableDestroyed || writableDestroyed) { | |
if (cb) { | |
cb(err); | |
} else if (err && (!this._writableState || !this._writableState.errorEmitted)) { | |
process.nextTick(emitErrorNT, this, err); | |
} | |
return this; | |
} // we set destroyed to true before firing error callbacks in order | |
// to make it re-entrance safe in case destroy() is called within callbacks | |
if (this._readableState) { | |
this._readableState.destroyed = true; | |
} // if this is a duplex stream mark the writable part as destroyed as well | |
if (this._writableState) { | |
this._writableState.destroyed = true; | |
} | |
this._destroy(err || null, function (err) { | |
if (!cb && err) { | |
process.nextTick(emitErrorAndCloseNT, _this, err); | |
if (_this._writableState) { | |
_this._writableState.errorEmitted = true; | |
} | |
} else if (cb) { | |
process.nextTick(emitCloseNT, _this); | |
cb(err); | |
} else { | |
process.nextTick(emitCloseNT, _this); | |
} | |
}); | |
return this; | |
} | |
function emitErrorAndCloseNT(self, err) { | |
emitErrorNT(self, err); | |
emitCloseNT(self); | |
} | |
function emitCloseNT(self) { | |
if (self._writableState && !self._writableState.emitClose) return; | |
if (self._readableState && !self._readableState.emitClose) return; | |
self.emit('close'); | |
} | |
function undestroy() { | |
if (this._readableState) { | |
this._readableState.destroyed = false; | |
this._readableState.reading = false; | |
this._readableState.ended = false; | |
this._readableState.endEmitted = false; | |
} | |
if (this._writableState) { | |
this._writableState.destroyed = false; | |
this._writableState.ended = false; | |
this._writableState.ending = false; | |
this._writableState.finalCalled = false; | |
this._writableState.prefinished = false; | |
this._writableState.finished = false; | |
this._writableState.errorEmitted = false; | |
} | |
} | |
function emitErrorNT(self, err) { | |
self.emit('error', err); | |
} | |
module.exports = { | |
destroy: destroy, | |
undestroy: undestroy | |
}; | |
}).call(this,require('_process')) | |
},{"_process":37}],52:[function(require,module,exports){ | |
// Ported from https://github.com/mafintosh/end-of-stream with | |
// permission from the author, Mathias Buus (@mafintosh). | |
'use strict'; | |
var ERR_STREAM_PREMATURE_CLOSE = require('../../../errors').codes.ERR_STREAM_PREMATURE_CLOSE; | |
function once(callback) { | |
var called = false; | |
return function () { | |
if (called) return; | |
called = true; | |
for (var _len = arguments.length, args = new Array(_len), _key = 0; _key < _len; _key++) { | |
args[_key] = arguments[_key]; | |
} | |
callback.apply(this, args); | |
}; | |
} | |
function noop() {} | |
function isRequest(stream) { | |
return stream.setHeader && typeof stream.abort === 'function'; | |
} | |
function eos(stream, opts, callback) { | |
if (typeof opts === 'function') return eos(stream, null, opts); | |
if (!opts) opts = {}; | |
callback = once(callback || noop); | |
var readable = opts.readable || opts.readable !== false && stream.readable; | |
var writable = opts.writable || opts.writable !== false && stream.writable; | |
var onlegacyfinish = function onlegacyfinish() { | |
if (!stream.writable) onfinish(); | |
}; | |
var writableEnded = stream._writableState && stream._writableState.finished; | |
var onfinish = function onfinish() { | |
writable = false; | |
writableEnded = true; | |
if (!readable) callback.call(stream); | |
}; | |
var readableEnded = stream._readableState && stream._readableState.endEmitted; | |
var onend = function onend() { | |
readable = false; | |
readableEnded = true; | |
if (!writable) callback.call(stream); | |
}; | |
var onerror = function onerror(err) { | |
callback.call(stream, err); | |
}; | |
var onclose = function onclose() { | |
var err; | |
if (readable && !readableEnded) { | |
if (!stream._readableState || !stream._readableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE(); | |
return callback.call(stream, err); | |
} | |
if (writable && !writableEnded) { | |
if (!stream._writableState || !stream._writableState.ended) err = new ERR_STREAM_PREMATURE_CLOSE(); | |
return callback.call(stream, err); | |
} | |
}; | |
var onrequest = function onrequest() { | |
stream.req.on('finish', onfinish); | |
}; | |
if (isRequest(stream)) { | |
stream.on('complete', onfinish); | |
stream.on('abort', onclose); | |
if (stream.req) onrequest();else stream.on('request', onrequest); | |
} else if (writable && !stream._writableState) { | |
// legacy streams | |
stream.on('end', onlegacyfinish); | |
stream.on('close', onlegacyfinish); | |
} | |
stream.on('end', onend); | |
stream.on('finish', onfinish); | |
if (opts.error !== false) stream.on('error', onerror); | |
stream.on('close', onclose); | |
return function () { | |
stream.removeListener('complete', onfinish); | |
stream.removeListener('abort', onclose); | |
stream.removeListener('request', onrequest); | |
if (stream.req) stream.req.removeListener('finish', onfinish); | |
stream.removeListener('end', onlegacyfinish); | |
stream.removeListener('close', onlegacyfinish); | |
stream.removeListener('finish', onfinish); | |
stream.removeListener('end', onend); | |
stream.removeListener('error', onerror); | |
stream.removeListener('close', onclose); | |
}; | |
} | |
module.exports = eos; | |
},{"../../../errors":42}],53:[function(require,module,exports){ | |
// Ported from https://github.com/mafintosh/pump with | |
// permission from the author, Mathias Buus (@mafintosh). | |
'use strict'; | |
var eos; | |
function once(callback) { | |
var called = false; | |
return function () { | |
if (called) return; | |
called = true; | |
callback.apply(void 0, arguments); | |
}; | |
} | |
var _require$codes = require('../../../errors').codes, | |
ERR_MISSING_ARGS = _require$codes.ERR_MISSING_ARGS, | |
ERR_STREAM_DESTROYED = _require$codes.ERR_STREAM_DESTROYED; | |
function noop(err) { | |
// Rethrow the error if it exists to avoid swallowing it | |
if (err) throw err; | |
} | |
function isRequest(stream) { | |
return stream.setHeader && typeof stream.abort === 'function'; | |
} | |
function destroyer(stream, reading, writing, callback) { | |
callback = once(callback); | |
var closed = false; | |
stream.on('close', function () { | |
closed = true; | |
}); | |
if (eos === undefined) eos = require('./end-of-stream'); | |
eos(stream, { | |
readable: reading, | |
writable: writing | |
}, function (err) { | |
if (err) return callback(err); | |
closed = true; | |
callback(); | |
}); | |
var destroyed = false; | |
return function (err) { | |
if (closed) return; | |
if (destroyed) return; | |
destroyed = true; // request.destroy just do .end - .abort is what we want | |
if (isRequest(stream)) return stream.abort(); | |
if (typeof stream.destroy === 'function') return stream.destroy(); | |
callback(err || new ERR_STREAM_DESTROYED('pipe')); | |
}; | |
} | |
function call(fn) { | |
fn(); | |
} | |
function pipe(from, to) { | |
return from.pipe(to); | |
} | |
function popCallback(streams) { | |
if (!streams.length) return noop; | |
if (typeof streams[streams.length - 1] !== 'function') return noop; | |
return streams.pop(); | |
} | |
function pipeline() { | |
for (var _len = arguments.length, streams = new Array(_len), _key = 0; _key < _len; _key++) { | |
streams[_key] = arguments[_key]; | |
} | |
var callback = popCallback(streams); | |
if (Array.isArray(streams[0])) streams = streams[0]; | |
if (streams.length < 2) { | |
throw new ERR_MISSING_ARGS('streams'); | |
} | |
var error; | |
var destroys = streams.map(function (stream, i) { | |
var reading = i < streams.length - 1; | |
var writing = i > 0; | |
return destroyer(stream, reading, writing, function (err) { | |
if (!error) error = err; | |
if (err) destroys.forEach(call); | |
if (reading) return; | |
destroys.forEach(call); | |
callback(error); | |
}); | |
}); | |
return streams.reduce(pipe); | |
} | |
module.exports = pipeline; | |
},{"../../../errors":42,"./end-of-stream":52}],54:[function(require,module,exports){ | |
'use strict'; | |
var ERR_INVALID_OPT_VALUE = require('../../../errors').codes.ERR_INVALID_OPT_VALUE; | |
function highWaterMarkFrom(options, isDuplex, duplexKey) { | |
return options.highWaterMark != null ? options.highWaterMark : isDuplex ? options[duplexKey] : null; | |
} | |
function getHighWaterMark(state, options, duplexKey, isDuplex) { | |
var hwm = highWaterMarkFrom(options, isDuplex, duplexKey); | |
if (hwm != null) { | |
if (!(isFinite(hwm) && Math.floor(hwm) === hwm) || hwm < 0) { | |
var name = isDuplex ? duplexKey : 'highWaterMark'; | |
throw new ERR_INVALID_OPT_VALUE(name, hwm); | |
} | |
return Math.floor(hwm); | |
} // Default value | |
return state.objectMode ? 16 : 16 * 1024; | |
} | |
module.exports = { | |
getHighWaterMark: getHighWaterMark | |
}; | |
},{"../../../errors":42}],55:[function(require,module,exports){ | |
module.exports = require('events').EventEmitter; | |
},{"events":26}],56:[function(require,module,exports){ | |
exports = module.exports = require('./lib/_stream_readable.js'); | |
exports.Stream = exports; | |
exports.Readable = exports; | |
exports.Writable = require('./lib/_stream_writable.js'); | |
exports.Duplex = require('./lib/_stream_duplex.js'); | |
exports.Transform = require('./lib/_stream_transform.js'); | |
exports.PassThrough = require('./lib/_stream_passthrough.js'); | |
exports.finished = require('./lib/internal/streams/end-of-stream.js'); | |
exports.pipeline = require('./lib/internal/streams/pipeline.js'); | |
},{"./lib/_stream_duplex.js":44,"./lib/_stream_passthrough.js":45,"./lib/_stream_readable.js":46,"./lib/_stream_transform.js":47,"./lib/_stream_writable.js":48,"./lib/internal/streams/end-of-stream.js":52,"./lib/internal/streams/pipeline.js":53}],57:[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]; | |
} | |
if (parsed.query && !opts.query) { | |
opts.query = parsed.query; | |
} | |
return io.socket(parsed.path, opts); | |
} | |
/** | |
* 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":58,"./socket":60,"./url":61,"debug":12,"socket.io-parser":63}],58:[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 = []; | |
var _parser = opts.parser || parser; | |
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.generateId(nsp); | |
} | |
} | |
}; | |
/** | |
* generate `socket.id` for the given `nsp` | |
* | |
* @param {String} nsp | |
* @return {String} | |
* @api private | |
*/ | |
Manager.prototype.generateId = function (nsp) { | |
return (nsp === '/' ? '' : (nsp + '#')) + 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, opts) { | |
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, opts) { | |
var socket = this.nsps[nsp]; | |
if (!socket) { | |
socket = new Socket(this, nsp, opts); | |
this.nsps[nsp] = socket; | |
var self = this; | |
socket.on('connecting', onConnecting); | |
socket.on('connect', function () { | |
socket.id = self.generateId(nsp); | |
}); | |
if (this.autoConnect) { | |
// manually call here since connecting event 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 (packet.query && packet.type === 0) packet.nsp += '?' + packet.query; | |
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 subsLength = this.subs.length; | |
for (var i = 0; i < subsLength; i++) { | |
var 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":59,"./socket":60,"backo2":3,"component-bind":9,"component-emitter":10,"debug":12,"engine.io-client":14,"indexof":32,"socket.io-parser":63}],59:[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); | |
} | |
}; | |
} | |
},{}],60:[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 parseqs = require('parseqs'); | |
var hasBin = require('has-binary2'); | |
/** | |
* 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, opts) { | |
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; | |
this.flags = {}; | |
if (opts && opts.query) { | |
this.query = opts.query; | |
} | |
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 packet = { | |
type: (this.flags.binary !== undefined ? this.flags.binary : hasBin(args)) ? parser.BINARY_EVENT : parser.EVENT, | |
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); | |
} | |
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) { | |
if (this.query) { | |
var query = typeof this.query === 'object' ? parseqs.encode(this.query) : this.query; | |
debug('sending connect packet with query %s', query); | |
this.packet({type: parser.CONNECT, query: query}); | |
} else { | |
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) { | |
var sameNamespace = packet.nsp === this.nsp; | |
var rootNamespaceError = packet.type === parser.ERROR && packet.nsp === '/'; | |
if (!sameNamespace && !rootNamespaceError) 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); | |
self.packet({ | |
type: hasBin(args) ? parser.BINARY_ACK : parser.ACK, | |
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.compress = compress; | |
return this; | |
}; | |
/** | |
* Sets the binary flag | |
* | |
* @param {Boolean} whether the emitted data contains binary | |
* @return {Socket} self | |
* @api public | |
*/ | |
Socket.prototype.binary = function (binary) { | |
this.flags.binary = binary; | |
return this; | |
}; | |
},{"./on":59,"component-bind":9,"component-emitter":10,"debug":12,"has-binary2":28,"parseqs":35,"socket.io-parser":63,"to-array":70}],61:[function(require,module,exports){ | |
/** | |
* 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 | |
loc = loc || (typeof location !== 'undefined' && 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; | |
} | |
},{"debug":12,"parseuri":36}],62:[function(require,module,exports){ | |
/*global Blob,File*/ | |
/** | |
* Module requirements | |
*/ | |
var isArray = require('isarray'); | |
var isBuf = require('./is-buffer'); | |
var toString = Object.prototype.toString; | |
var withNativeBlob = typeof Blob === 'function' || (typeof Blob !== 'undefined' && toString.call(Blob) === '[object BlobConstructor]'); | |
var withNativeFile = typeof File === 'function' || (typeof File !== 'undefined' && toString.call(File) === '[object FileConstructor]'); | |
/** | |
* 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; | |
var pack = packet; | |
pack.data = _deconstructPacket(packetData, buffers); | |
pack.attachments = buffers.length; // number of binary 'attachments' | |
return {packet: pack, buffers: buffers}; | |
}; | |
function _deconstructPacket(data, buffers) { | |
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], buffers); | |
} | |
return newData; | |
} else if (typeof data === 'object' && !(data instanceof Date)) { | |
var newData = {}; | |
for (var key in data) { | |
newData[key] = _deconstructPacket(data[key], buffers); | |
} | |
return newData; | |
} | |
return data; | |
} | |
/** | |
* 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) { | |
packet.data = _reconstructPacket(packet.data, buffers); | |
packet.attachments = undefined; // no longer useful | |
return packet; | |
}; | |
function _reconstructPacket(data, buffers) { | |
if (!data) return data; | |
if (data && data._placeholder) { | |
return buffers[data.num]; // appropriate buffer (should be natural order anyway) | |
} else if (isArray(data)) { | |
for (var i = 0; i < data.length; i++) { | |
data[i] = _reconstructPacket(data[i], buffers); | |
} | |
} else if (typeof data === 'object') { | |
for (var key in data) { | |
data[key] = _reconstructPacket(data[key], buffers); | |
} | |
} | |
return data; | |
} | |
/** | |
* 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 ((withNativeBlob && obj instanceof Blob) || | |
(withNativeFile && 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 (typeof obj === 'object' && !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); | |
} | |
}; | |
},{"./is-buffer":64,"isarray":67}],63:[function(require,module,exports){ | |
/** | |
* Module dependencies. | |
*/ | |
var debug = require('debug')('socket.io-parser'); | |
var Emitter = require('component-emitter'); | |
var binary = require('./binary'); | |
var isArray = require('isarray'); | |
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() {} | |
var ERROR_PACKET = exports.ERROR + '"encode error"'; | |
/** | |
* 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) { | |
// first is type | |
var str = '' + obj.type; | |
// attachments if we have them | |
if (exports.BINARY_EVENT === obj.type || exports.BINARY_ACK === obj.type) { | |
str += obj.attachments + '-'; | |
} | |
// if we have a namespace other than `/` | |
// we append it followed by a comma `,` | |
if (obj.nsp && '/' !== obj.nsp) { | |
str += obj.nsp + ','; | |
} | |
// immediately followed by the id | |
if (null != obj.id) { | |
str += obj.id; | |
} | |
// json data | |
if (null != obj.data) { | |
var payload = tryStringify(obj.data); | |
if (payload !== false) { | |
str += payload; | |
} else { | |
return ERROR_PACKET; | |
} | |
} | |
debug('encoded %j as %s', obj, str); | |
return str; | |
} | |
function tryStringify(str) { | |
try { | |
return JSON.stringify(str); | |
} catch(e){ | |
return false; | |
} | |
} | |
/** | |
* 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 encoded packet string into packet JSON. | |
* | |
* @param {String} obj - encoded packet | |
* @return {Object} packet | |
* @api public | |
*/ | |
Decoder.prototype.add = function(obj) { | |
var packet; | |
if (typeof obj === 'string') { | |
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 i = 0; | |
// look up type | |
var p = { | |
type: Number(str.charAt(0)) | |
}; | |
if (null == exports.types[p.type]) { | |
return error('unknown packet type ' + p.type); | |
} | |
// 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)) { | |
var payload = tryParse(str.substr(i)); | |
var isPayloadValid = payload !== false && (p.type === exports.ERROR || isArray(payload)); | |
if (isPayloadValid) { | |
p.data = payload; | |
} else { | |
return error('invalid payload'); | |
} | |
} | |
debug('decoded %s as %j', str, p); | |
return p; | |
} | |
function tryParse(str) { | |
try { | |
return JSON.parse(str); | |
} catch(e){ | |
return false; | |
} | |
} | |
/** | |
* 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(msg) { | |
return { | |
type: exports.ERROR, | |
data: 'parser error: ' + msg | |
}; | |
} | |
},{"./binary":62,"./is-buffer":64,"component-emitter":10,"debug":65,"isarray":67}],64:[function(require,module,exports){ | |
(function (Buffer){ | |
module.exports = isBuf; | |
var withNativeBuffer = typeof Buffer === 'function' && typeof Buffer.isBuffer === 'function'; | |
var withNativeArrayBuffer = typeof ArrayBuffer === 'function'; | |
var isView = function (obj) { | |
return typeof ArrayBuffer.isView === 'function' ? ArrayBuffer.isView(obj) : (obj.buffer instanceof ArrayBuffer); | |
}; | |
/** | |
* Returns true if obj is a buffer or an arraybuffer. | |
* | |
* @api private | |
*/ | |
function isBuf(obj) { | |
return (withNativeBuffer && Buffer.isBuffer(obj)) || | |
(withNativeArrayBuffer && (obj instanceof ArrayBuffer || isView(obj))); | |
} | |
}).call(this,require("buffer").Buffer) | |
},{"buffer":8}],65:[function(require,module,exports){ | |
(function (process){ | |
/** | |
* 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 = [ | |
'#0000CC', '#0000FF', '#0033CC', '#0033FF', '#0066CC', '#0066FF', '#0099CC', | |
'#0099FF', '#00CC00', '#00CC33', '#00CC66', '#00CC99', '#00CCCC', '#00CCFF', | |
'#3300CC', '#3300FF', '#3333CC', '#3333FF', '#3366CC', '#3366FF', '#3399CC', | |
'#3399FF', '#33CC00', '#33CC33', '#33CC66', '#33CC99', '#33CCCC', '#33CCFF', | |
'#6600CC', '#6600FF', '#6633CC', '#6633FF', '#66CC00', '#66CC33', '#9900CC', | |
'#9900FF', '#9933CC', '#9933FF', '#99CC00', '#99CC33', '#CC0000', '#CC0033', | |
'#CC0066', '#CC0099', '#CC00CC', '#CC00FF', '#CC3300', '#CC3333', '#CC3366', | |
'#CC3399', '#CC33CC', '#CC33FF', '#CC6600', '#CC6633', '#CC9900', '#CC9933', | |
'#CCCC00', '#CCCC33', '#FF0000', '#FF0033', '#FF0066', '#FF0099', '#FF00CC', | |
'#FF00FF', '#FF3300', '#FF3333', '#FF3366', '#FF3399', '#FF33CC', '#FF33FF', | |
'#FF6600', '#FF6633', '#FF9900', '#FF9933', '#FFCC00', '#FFCC33' | |
]; | |
/** | |
* 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() { | |
// NB: In an Electron preload script, document will be defined but not fully | |
// initialized. Since we know we're in Chrome, we'll just detect this case | |
// explicitly | |
if (typeof window !== 'undefined' && window.process && window.process.type === 'renderer') { | |
return true; | |
} | |
// Internet Explorer and Edge do not support colors. | |
if (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/)) { | |
return false; | |
} | |
// is webkit? http://stackoverflow.com/a/16459606/376773 | |
// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632 | |
return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) || | |
// is firebug? http://stackoverflow.com/a/398120/376773 | |
(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) || | |
// is firefox >= v31? | |
// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages | |
(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31) || | |
// double check webkit in userAgent just in case we are in a worker | |
(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/)); | |
} | |
/** | |
* Map %j to `JSON.stringify()`, since no Web Inspectors do that by default. | |
*/ | |
exports.formatters.j = function(v) { | |
try { | |
return JSON.stringify(v); | |
} catch (err) { | |
return '[UnexpectedJSONParseError]: ' + err.message; | |
} | |
}; | |
/** | |
* Colorize log arguments if enabled. | |
* | |
* @api public | |
*/ | |
function formatArgs(args) { | |
var useColors = this.useColors; | |
args[0] = (useColors ? '%c' : '') | |
+ this.namespace | |
+ (useColors ? ' %c' : ' ') | |
+ args[0] | |
+ (useColors ? '%c ' : ' ') | |
+ '+' + exports.humanize(this.diff); | |
if (!useColors) return; | |
var c = 'color: ' + this.color; | |
args.splice(1, 0, c, 'color: inherit') | |
// 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-zA-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); | |
} | |
/** | |
* 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) {} | |
// If debug isn't set in LS, and we're in Electron, try to load $DEBUG | |
if (!r && typeof process !== 'undefined' && 'env' in process) { | |
r = process.env.DEBUG; | |
} | |
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) {} | |
} | |
}).call(this,require('_process')) | |
},{"./debug":66,"_process":37}],66:[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 = createDebug.debug = createDebug['default'] = createDebug; | |
exports.coerce = coerce; | |
exports.disable = disable; | |
exports.enable = enable; | |
exports.enabled = enabled; | |
exports.humanize = require('ms'); | |
/** | |
* Active `debug` instances. | |
*/ | |
exports.instances = []; | |
/** | |
* 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, lower or upper-case letter, i.e. "n" and "N". | |
*/ | |
exports.formatters = {}; | |
/** | |
* Select a color. | |
* @param {String} namespace | |
* @return {Number} | |
* @api private | |
*/ | |
function selectColor(namespace) { | |
var hash = 0, i; | |
for (i in namespace) { | |
hash = ((hash << 5) - hash) + namespace.charCodeAt(i); | |
hash |= 0; // Convert to 32bit integer | |
} | |
return exports.colors[Math.abs(hash) % exports.colors.length]; | |
} | |
/** | |
* Create a debugger with the given `namespace`. | |
* | |
* @param {String} namespace | |
* @return {Function} | |
* @api public | |
*/ | |
function createDebug(namespace) { | |
var prevTime; | |
function debug() { | |
// disabled? | |
if (!debug.enabled) return; | |
var self = debug; | |
// set `diff` timestamp | |
var curr = +new Date(); | |
var ms = curr - (prevTime || curr); | |
self.diff = ms; | |
self.prev = prevTime; | |
self.curr = curr; | |
prevTime = curr; | |
// turn the `arguments` into a proper Array | |
var args = new Array(arguments.length); | |
for (var i = 0; i < args.length; i++) { | |
args[i] = arguments[i]; | |
} | |
args[0] = exports.coerce(args[0]); | |
if ('string' !== typeof args[0]) { | |
// anything else let's inspect with %O | |
args.unshift('%O'); | |
} | |
// apply any `formatters` transformations | |
var index = 0; | |
args[0] = args[0].replace(/%([a-zA-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; | |
}); | |
// apply env-specific formatting (colors, etc.) | |
exports.formatArgs.call(self, args); | |
var logFn = debug.log || exports.log || console.log.bind(console); | |
logFn.apply(self, args); | |
} | |
debug.namespace = namespace; | |
debug.enabled = exports.enabled(namespace); | |
debug.useColors = exports.useColors(); | |
debug.color = selectColor(namespace); | |
debug.destroy = destroy; | |
// env-specific initialization logic for debug instances | |
if ('function' === typeof exports.init) { | |
exports.init(debug); | |
} | |
exports.instances.push(debug); | |
return debug; | |
} | |
function destroy () { | |
var index = exports.instances.indexOf(this); | |
if (index !== -1) { | |
exports.instances.splice(index, 1); | |
return true; | |
} else { | |
return false; | |
} | |
} | |
/** | |
* 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); | |
exports.names = []; | |
exports.skips = []; | |
var i; | |
var split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/); | |
var len = split.length; | |
for (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 + '$')); | |
} | |
} | |
for (i = 0; i < exports.instances.length; i++) { | |
var instance = exports.instances[i]; | |
instance.enabled = exports.enabled(instance.namespace); | |
} | |
} | |
/** | |
* 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) { | |
if (name[name.length - 1] === '*') { | |
return true; | |
} | |
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":68}],67:[function(require,module,exports){ | |
arguments[4][29][0].apply(exports,arguments) | |
},{"dup":29}],68:[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] | |
* @throws {Error} throw an error if val is not a non-empty string or a number | |
* @return {String|Number} | |
* @api public | |
*/ | |
module.exports = function(val, options) { | |
options = options || {}; | |
var type = typeof val; | |
if (type === 'string' && val.length > 0) { | |
return parse(val); | |
} else if (type === 'number' && isNaN(val) === false) { | |
return options.long ? fmtLong(val) : fmtShort(val); | |
} | |
throw new Error( | |
'val is not a non-empty string or a valid number. val=' + | |
JSON.stringify(val) | |
); | |
}; | |
/** | |
* Parse the given `str` and return milliseconds. | |
* | |
* @param {String} str | |
* @return {Number} | |
* @api private | |
*/ | |
function parse(str) { | |
str = String(str); | |
if (str.length > 100) { | |
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; | |
default: | |
return undefined; | |
} | |
} | |
/** | |
* Short format for `ms`. | |
* | |
* @param {Number} ms | |
* @return {String} | |
* @api private | |
*/ | |
function fmtShort(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 fmtLong(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'; | |
} | |
},{}],69:[function(require,module,exports){ | |
// Copyright Joyent, Inc. and other Node contributors. | |
// | |
// Permission is hereby granted, free of charge, to any person obtaining a | |
// copy of this software and associated documentation files (the | |
// "Software"), to deal in the Software without restriction, including | |
// without limitation the rights to use, copy, modify, merge, publish, | |
// distribute, sublicense, and/or sell copies of the Software, and to permit | |
// persons to whom the Software is furnished to do so, subject to the | |
// following conditions: | |
// | |
// The above copyright notice and this permission notice shall be included | |
// in all copies or substantial portions of the Software. | |
// | |
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS | |
// OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF | |
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN | |
// NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, | |
// DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR | |
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE | |
// USE OR OTHER DEALINGS IN THE SOFTWARE. | |
'use strict'; | |
/*<replacement>*/ | |
var Buffer = require('safe-buffer').Buffer; | |
/*</replacement>*/ | |
var isEncoding = Buffer.isEncoding || function (encoding) { | |
encoding = '' + encoding; | |
switch (encoding && encoding.toLowerCase()) { | |
case 'hex':case 'utf8':case 'utf-8':case 'ascii':case 'binary':case 'base64':case 'ucs2':case 'ucs-2':case 'utf16le':case 'utf-16le':case 'raw': | |
return true; | |
default: | |
return false; | |
} | |
}; | |
function _normalizeEncoding(enc) { | |
if (!enc) return 'utf8'; | |
var retried; | |
while (true) { | |
switch (enc) { | |
case 'utf8': | |
case 'utf-8': | |
return 'utf8'; | |
case 'ucs2': | |
case 'ucs-2': | |
case 'utf16le': | |
case 'utf-16le': | |
return 'utf16le'; | |
case 'latin1': | |
case 'binary': | |
return 'latin1'; | |
case 'base64': | |
case 'ascii': | |
case 'hex': | |
return enc; | |
default: | |
if (retried) return; // undefined | |
enc = ('' + enc).toLowerCase(); | |
retried = true; | |
} | |
} | |
}; | |
// Do not cache `Buffer.isEncoding` when checking encoding names as some | |
// modules monkey-patch it to support additional encodings | |
function normalizeEncoding(enc) { | |
var nenc = _normalizeEncoding(enc); | |
if (typeof nenc !== 'string' && (Buffer.isEncoding === isEncoding || !isEncoding(enc))) throw new Error('Unknown encoding: ' + enc); | |
return nenc || enc; | |
} | |
// StringDecoder provides an interface for efficiently splitting a series of | |
// buffers into a series of JS strings without breaking apart multi-byte | |
// characters. | |
exports.StringDecoder = StringDecoder; | |
function StringDecoder(encoding) { | |
this.encoding = normalizeEncoding(encoding); | |
var nb; | |
switch (this.encoding) { | |
case 'utf16le': | |
this.text = utf16Text; | |
this.end = utf16End; | |
nb = 4; | |
break; | |
case 'utf8': | |
this.fillLast = utf8FillLast; | |
nb = 4; | |
break; | |
case 'base64': | |
this.text = base64Text; | |
this.end = base64End; | |
nb = 3; | |
break; | |
default: | |
this.write = simpleWrite; | |
this.end = simpleEnd; | |
return; | |
} | |
this.lastNeed = 0; | |
this.lastTotal = 0; | |
this.lastChar = Buffer.allocUnsafe(nb); | |
} | |
StringDecoder.prototype.write = function (buf) { | |
if (buf.length === 0) return ''; | |
var r; | |
var i; | |
if (this.lastNeed) { | |
r = this.fillLast(buf); | |
if (r === undefined) return ''; | |
i = this.lastNeed; | |
this.lastNeed = 0; | |
} else { | |
i = 0; | |
} | |
if (i < buf.length) return r ? r + this.text(buf, i) : this.text(buf, i); | |
return r || ''; | |
}; | |
StringDecoder.prototype.end = utf8End; | |
// Returns only complete characters in a Buffer | |
StringDecoder.prototype.text = utf8Text; | |
// Attempts to complete a partial non-UTF-8 character using bytes from a Buffer | |
StringDecoder.prototype.fillLast = function (buf) { | |
if (this.lastNeed <= buf.length) { | |
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, this.lastNeed); | |
return this.lastChar.toString(this.encoding, 0, this.lastTotal); | |
} | |
buf.copy(this.lastChar, this.lastTotal - this.lastNeed, 0, buf.length); | |
this.lastNeed -= buf.length; | |
}; | |
// Checks the type of a UTF-8 byte, whether it's ASCII, a leading byte, or a | |
// continuation byte. If an invalid byte is detected, -2 is returned. | |
function utf8CheckByte(byte) { | |
if (byte <= 0x7F) return 0;else if (byte >> 5 === 0x06) return 2;else if (byte >> 4 === 0x0E) return 3;else if (byte >> 3 === 0x1E) return 4; | |
return byte >> 6 === 0x02 ? -1 : -2; | |
} | |
// Checks at most 3 bytes at the end of a Buffer in order to detect an | |
// incomplete multi-byte UTF-8 character. The total number of bytes (2, 3, or 4) | |
// needed to complete the UTF-8 character (if applicable) are returned. | |
function utf8CheckIncomplete(self, buf, i) { | |
var j = buf.length - 1; | |
if (j < i) return 0; | |
var nb = utf8CheckByte(buf[j]); | |
if (nb >= 0) { | |
if (nb > 0) self.lastNeed = nb - 1; | |
return nb; | |
} | |
if (--j < i || nb === -2) return 0; | |
nb = utf8CheckByte(buf[j]); | |
if (nb >= 0) { | |
if (nb > 0) self.lastNeed = nb - 2; | |
return nb; | |
} | |
if (--j < i || nb === -2) return 0; | |
nb = utf8CheckByte(buf[j]); | |
if (nb >= 0) { | |
if (nb > 0) { | |
if (nb === 2) nb = 0;else self.lastNeed = nb - 3; | |
} | |
return nb; | |
} | |
return 0; | |
} | |
// Validates as many continuation bytes for a multi-byte UTF-8 character as | |
// needed or are available. If we see a non-continuation byte where we expect | |
// one, we "replace" the validated continuation bytes we've seen so far with | |
// a single UTF-8 replacement character ('\ufffd'), to match v8's UTF-8 decoding | |
// behavior. The continuation byte check is included three times in the case | |
// where all of the continuation bytes for a character exist in the same buffer. | |
// It is also done this way as a slight performance increase instead of using a | |
// loop. | |
function utf8CheckExtraBytes(self, buf, p) { | |
if ((buf[0] & 0xC0) !== 0x80) { | |
self.lastNeed = 0; | |
return '\ufffd'; | |
} | |
if (self.lastNeed > 1 && buf.length > 1) { | |
if ((buf[1] & 0xC0) !== 0x80) { | |
self.lastNeed = 1; | |
return '\ufffd'; | |
} | |
if (self.lastNeed > 2 && buf.length > 2) { | |
if ((buf[2] & 0xC0) !== 0x80) { | |
self.lastNeed = 2; | |
return '\ufffd'; | |
} | |
} | |
} | |
} | |
// Attempts to complete a multi-byte UTF-8 character using bytes from a Buffer. | |
function utf8FillLast(buf) { | |
var p = this.lastTotal - this.lastNeed; | |
var r = utf8CheckExtraBytes(this, buf, p); | |
if (r !== undefined) return r; | |
if (this.lastNeed <= buf.length) { | |
buf.copy(this.lastChar, p, 0, this.lastNeed); | |
return this.lastChar.toString(this.encoding, 0, this.lastTotal); | |
} | |
buf.copy(this.lastChar, p, 0, buf.length); | |
this.lastNeed -= buf.length; | |
} | |
// Returns all complete UTF-8 characters in a Buffer. If the Buffer ended on a | |
// partial character, the character's bytes are buffered until the required | |
// number of bytes are available. | |
function utf8Text(buf, i) { | |
var total = utf8CheckIncomplete(this, buf, i); | |
if (!this.lastNeed) return buf.toString('utf8', i); | |
this.lastTotal = total; | |
var end = buf.length - (total - this.lastNeed); | |
buf.copy(this.lastChar, 0, end); | |
return buf.toString('utf8', i, end); | |
} | |
// For UTF-8, a replacement character is added when ending on a partial | |
// character. | |
function utf8End(buf) { | |
var r = buf && buf.length ? this.write(buf) : ''; | |
if (this.lastNeed) return r + '\ufffd'; | |
return r; | |
} | |
// UTF-16LE typically needs two bytes per character, but even if we have an even | |
// number of bytes available, we need to check if we end on a leading/high | |
// surrogate. In that case, we need to wait for the next two bytes in order to | |
// decode the last character properly. | |
function utf16Text(buf, i) { | |
if ((buf.length - i) % 2 === 0) { | |
var r = buf.toString('utf16le', i); | |
if (r) { | |
var c = r.charCodeAt(r.length - 1); | |
if (c >= 0xD800 && c <= 0xDBFF) { | |
this.lastNeed = 2; | |
this.lastTotal = 4; | |
this.lastChar[0] = buf[buf.length - 2]; | |
this.lastChar[1] = buf[buf.length - 1]; | |
return r.slice(0, -1); | |
} | |
} | |
return r; | |
} | |
this.lastNeed = 1; | |
this.lastTotal = 2; | |
this.lastChar[0] = buf[buf.length - 1]; | |
return buf.toString('utf16le', i, buf.length - 1); | |
} | |
// For UTF-16LE we do not explicitly append special replacement characters if we | |
// end on a partial character, we simply let v8 handle that. | |
function utf16End(buf) { | |
var r = buf && buf.length ? this.write(buf) : ''; | |
if (this.lastNeed) { | |
var end = this.lastTotal - this.lastNeed; | |
return r + this.lastChar.toString('utf16le', 0, end); | |
} | |
return r; | |
} | |
function base64Text(buf, i) { | |
var n = (buf.length - i) % 3; | |
if (n === 0) return buf.toString('base64', i); | |
this.lastNeed = 3 - n; | |
this.lastTotal = 3; | |
if (n === 1) { | |
this.lastChar[0] = buf[buf.length - 1]; | |
} else { | |
this.lastChar[0] = buf[buf.length - 2]; | |
this.lastChar[1] = buf[buf.length - 1]; | |
} | |
return buf.toString('base64', i, buf.length - n); | |
} | |
function base64End(buf) { | |
var r = buf && buf.length ? this.write(buf) : ''; | |
if (this.lastNeed) return r + this.lastChar.toString('base64', 0, 3 - this.lastNeed); | |
return r; | |
} | |
// Pass bytes on through for single-byte encodings (e.g. ascii, latin1, hex) | |
function simpleWrite(buf) { | |
return buf.toString(this.encoding); | |
} | |
function simpleEnd(buf) { | |
return buf && buf.length ? this.write(buf) : ''; | |
} | |
},{"safe-buffer":40}],70:[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 | |
} | |
},{}],71:[function(require,module,exports){ | |
(function (global){ | |
/** | |
* Module exports. | |
*/ | |
module.exports = deprecate; | |
/** | |
* Mark that a method should not be used. | |
* Returns a modified function which warns once by default. | |
* | |
* If `localStorage.noDeprecation = true` is set, then it is a no-op. | |
* | |
* If `localStorage.throwDeprecation = true` is set, then deprecated functions | |
* will throw an Error when invoked. | |
* | |
* If `localStorage.traceDeprecation = true` is set, then deprecated functions | |
* will invoke `console.trace()` instead of `console.error()`. | |
* | |
* @param {Function} fn - the function to deprecate | |
* @param {String} msg - the string to print to the console when `fn` is invoked | |
* @returns {Function} a new "deprecated" version of `fn` | |
* @api public | |
*/ | |
function deprecate (fn, msg) { | |
if (config('noDeprecation')) { | |
return fn; | |
} | |
var warned = false; | |
function deprecated() { | |
if (!warned) { | |
if (config('throwDeprecation')) { | |
throw new Error(msg); | |
} else if (config('traceDeprecation')) { | |
console.trace(msg); | |
} else { | |
console.warn(msg); | |
} | |
warned = true; | |
} | |
return fn.apply(this, arguments); | |
} | |
return deprecated; | |
} | |
/** | |
* Checks `localStorage` for boolean values for the given `name`. | |
* | |
* @param {String} name | |
* @returns {Boolean} | |
* @api private | |
*/ | |
function config (name) { | |
// accessing global.localStorage can trigger a DOMException in sandboxed iframes | |
try { | |
if (!global.localStorage) return false; | |
} catch (_) { | |
return false; | |
} | |
var val = global.localStorage[name]; | |
if (null == val) return false; | |
return String(val).toLowerCase() === 'true'; | |
} | |
}).call(this,typeof global !== "undefined" ? global : typeof self !== "undefined" ? self : typeof window !== "undefined" ? window : {}) | |
},{}],72:[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; | |
},{}],73:[function(require,module,exports){ | |
const WebRTCPeerClient = require('./webrtc_peer_client.js'); | |
module.exports = { | |
initSocketClient: WebRTCPeerClient.initSocketClient, | |
initPeerClient: WebRTCPeerClient.initPeerClient, | |
isInitiator: WebRTCPeerClient.isInitiator, | |
sendData: WebRTCPeerClient.sendData, | |
getData: WebRTCPeerClient.getData, | |
isPeerStarted: WebRTCPeerClient.isPeerStarted, | |
setDebug: WebRTCPeerClient.setDebug, | |
}; | |
},{"./webrtc_peer_client.js":75}],74:[function(require,module,exports){ | |
/////////////////// Turn Server Used if Not on LocaHost — I have not tested this /////////////////// | |
let turnReady; | |
const pcConfig = { | |
iceServers: [ | |
{ | |
urls: 'stun:stun.l.google.com:19302', | |
}, | |
], | |
}; | |
const DEBUG = false; | |
const log = function (message) { | |
if (!DEBUG) { | |
return; | |
} | |
console.log(message); | |
}; | |
const checkHostname = function () { | |
log('checking hostname'); | |
if ( | |
location.hostname && | |
location.hostname !== 'localhost' && | |
location.hostname !== '127.0.0.1' | |
) { | |
requestTurn( | |
'https://computeengineondemand.appspot.com/turn?username=41784574&key=4080218913', | |
); | |
} | |
}; | |
const requestTurn = function (turnURL) { | |
let turnExists = false; | |
for (let i in pcConfig.iceServers) { | |
if (pcConfig.iceServers[i].urls.substr(0, 5) === 'turn:') { | |
turnExists = true; | |
turnReady = true; | |
break; | |
} | |
} | |
if (!turnExists) { | |
console.log('Getting TURN server from ', turnURL); | |
// No TURN server. Get one from computeengineondemand.appspot.com: | |
let xhr = new XMLHttpRequest(); | |
xhr.onreadystatechange = function () { | |
if (xhr.readyState === 4 && xhr.status === 200) { | |
let turnServer = JSON.parse(xhr.responseText); | |
console.log('Got TURN server: ', turnServer); | |
pcConfig.iceServers.push({ | |
urls: 'turn:' + turnServer.username + '@' + turnServer.turn, | |
credential: turnServer.password, | |
}); | |
turnReady = true; | |
} | |
}; | |
xhr.open('GET', turnURL, true); | |
xhr.send(); | |
} | |
}; | |
module.exports = checkHostname; | |
},{}],75:[function(require,module,exports){ | |
const io = require('socket.io-client'); | |
let Peer = require('simple-peer'); | |
let socket; | |
const turnRequest = require('./turnRequest'); | |
// turnRequest(); | |
let newData = null; | |
let connections = []; | |
let initPeerRequest = false; | |
let debug = false; | |
/////////////////// Client Signal Server Using Socket IO /////////////////// | |
// starts socket client communication with signal server automatically | |
const startSocketCommunication = () => { | |
socket.emit('create or join'); | |
debug && console.log('Attempted to create or join room'); | |
}; | |
const handleCreated = (room) => { | |
debug && console.log('Created room ' + room); | |
}; | |
// room only holds two clients, can be changed in signal_socket.js | |
const handleFullRoom = (room) => { | |
debug && console.log('Room ' + room + ' is full'); | |
}; | |
// called by initiator client only | |
const handleJoinRoom = (room) => { | |
debug && | |
console.log('Another peer made a request to join room ' + room); | |
debug && | |
console.log('This peer is the initiator of room ' + room + '!'); | |
logConnection(room, true, true, false); | |
if (initPeerRequest) { | |
debug && console.log('initing peer from handle join'); | |
initPeerClient(); | |
} | |
}; | |
// called by non-initiator client | |
const handleJoinedRoom = (room) => { | |
debug && console.log('joined: ' + room); | |
roomReady = true; | |
logConnection(room, false, true, false); | |
if (initPeerRequest) { | |
debug && console.log('initing peer from handle joined'); | |
initPeerClient(); | |
} | |
}; | |
const logConnection = ( | |
_room, | |
_initiator, | |
_roomReady, | |
_peerStarted, | |
) => { | |
debug && console.log('logging connection'); | |
const newConnection = { | |
room: _room, // socket.io server room | |
initiator: _initiator, // client initiates the communication | |
roomReady: _roomReady, // socket.io room is created or joined | |
peerStarted: _peerStarted, // the peer connection is started | |
}; | |
connections.push(newConnection); | |
}; | |
// logs messages from server | |
const handleLog = (array) => { | |
log.apply(console, array); | |
}; | |
const handleInitPeer = (room) => { | |
const connection = findConnection(room); | |
attemptPeerStart(connection); | |
}; | |
const handleSendSignal = (message) => { | |
debug && console.log('receiving simple signal data'); | |
const connection = findConnection(message.room); | |
if (!connection.peerStarted) { | |
debug && console.log('Creating peer from messages!'); | |
createPeerConnection(connection); | |
connection.peer.signal(message.data); | |
} else { | |
connection.peer.signal(message.data); | |
} | |
}; | |
const findConnection = (room) => { | |
let connection = null; | |
for (let i = 0; i < connections.length; i++) { | |
if (connections[i].room === room) { | |
connection = connections[i]; | |
} | |
} | |
if (connection === null) { | |
debug && console.log('UT OH THAT CONNECTION DOESNT EXIST'); | |
} else { | |
debug && console.log('found the connection for room: ' + room); | |
} | |
return connection; | |
}; | |
// This client receives a message | |
const handleMessage = (message) => { | |
debug && console.log('MESSAGE ' + message); | |
if (message.type) { | |
debug && console.log('received msg typ ' + message.type); | |
} else { | |
debug && console.log('Client received message: ' + message); | |
} | |
// TO DO HANDLE BYE | |
// } else if (message === 'bye' && peerStarted) { | |
// handleRemoteHangup(); | |
}; | |
const initSocketClient = function (serverUrl) { | |
let socketServerUrl = 'http://localhost:80'; | |
if (typeof serverUrl !== 'undefined') { | |
socketServerUrl = serverUrl; | |
} | |
debug && console.log('connecting socket to ' + socketServerUrl); | |
socket = io.connect(socketServerUrl); | |
socket.on('created', (room) => handleCreated(room)); | |
socket.on('full', (room) => handleFullRoom(room)); | |
socket.on('join', (room) => handleJoinRoom(room)); | |
socket.on('joined', (room) => handleJoinedRoom(room)); | |
socket.on('initiate peer', (room) => handleInitPeer(room)); | |
socket.on('sending signal', (message) => handleSendSignal(message)); | |
socket.on('log', (array) => handleLog(array)); | |
socket.on('message', (message) => handleMessage(message)); | |
startSocketCommunication(); | |
}; | |
const emitSocketMessage = (message) => { | |
debug && console.log('Client sending message: ', message); | |
socket.emit('message', message); | |
}; | |
/////////////////// Peer Connection Via Simple Peer /////////////////// | |
const sendSignal = (data, connection) => { | |
debug && console.log('sending signal'); | |
const message = { | |
room: connection.room, | |
data: JSON.stringify(data), | |
}; | |
socket.emit('sending signal', message); | |
}; | |
const handleConnection = (data) => { | |
console.log('SIMPLE PEER IS CONNECTED'); | |
}; | |
const handleStream = (stream) => { | |
// remoteVideo.srcObject = stream; | |
}; | |
const handleError = (err) => { | |
debug && console.log(err); | |
}; | |
const handleData = (data) => { | |
const decodedString = new TextDecoder('utf-8').decode(data); | |
const decodedJSON = JSON.parse(decodedString); | |
newData = decodedJSON; | |
}; | |
const terminateSession = () => { | |
for (let i = 0; i < connections.length; i++) { | |
const peer = connections[i].peer; | |
peer.destroy(); // simple-peer method to close and cleanup peer connection | |
connections[i].peer = null; | |
connections[i].peerStarted = false; | |
} | |
// TO DO destroy socket and associated rooms | |
socket.emit('hangup'); | |
socket.close(); | |
// emitSocketMessage('hangup'); | |
}; | |
const handleClose = () => { | |
debug && console.log('GOT CLOSE'); | |
// closePeerConnection(); | |
// emitSocketMessage('bye'); | |
}; | |
const handleRemoteHangup = () => { | |
// log('Session terminated.'); | |
// closePeerConnection(); | |
// initiator = false; | |
}; | |
const closePeerConnection = () => { | |
// peerStarted = false; | |
// peer.destroy(); | |
// peer = null; | |
}; | |
function createPeerConnection(connection) { | |
debug && console.log('creating simple peer'); | |
const peer = new Peer({ | |
initiator: connection.initiator, | |
}); | |
// If initiator,peer.on'signal' will fire right away, if not it waits for signal | |
// https://github.com/feross/simple-peer#peeronsignal-data-- | |
peer.on('signal', (data) => sendSignal(data, connection)); | |
peer.on('connect', (data) => handleConnection(data)); | |
peer.on('error', (err) => handleError(err)); | |
peer.on('stream', (stream) => handleStream(stream)); | |
peer.on('data', (data) => handleData(data)); | |
peer.on('close', () => handleClose()); | |
connection.peerStarted = true; | |
connection.peer = peer; | |
} | |
const isPeerStarted = () => { | |
let peerStarted = false; | |
// if any peer connection is not started then it returns false | |
for (let i = 0; i < connections.length; i++) { | |
peerStarted = connections[i].peerStarted; | |
} | |
return peerStarted; | |
}; | |
const sendData = (data) => { | |
let msg = JSON.stringify({ data: data, userId: socket.id }); | |
for (let i = 0; i < connections.length; i++) { | |
const peer = connections[i]; | |
if (peer.peerStarted) { | |
const peerConn = peer.peer; | |
if (peerConn.connected) { | |
peerConn.write(msg); | |
} | |
} | |
} | |
}; | |
const getData = () => { | |
if (newData !== null) { | |
return newData; | |
} else { | |
return null; | |
} | |
}; | |
window.onbeforeunload = () => { | |
terminateSession(); | |
}; | |
const attemptPeerStart = (connection) => { | |
debug && | |
console.log( | |
'Attempting peer start', | |
connection.peerStarted, | |
connection.roomReady, | |
); | |
if (!connection.peerStarted && connection.roomReady) { | |
debug && console.log('Creating peer connection'); | |
// log('initiator', initiator); | |
// debug && console.log('YES creating from attempt peer start'); | |
createPeerConnection(connection); | |
} else { | |
// debug && console.log('NOT creating from attempt peer start'); | |
debug && console.log('Not creating peer connection'); | |
} | |
}; | |
const initPeerClient = () => { | |
debug && | |
console.log( | |
'running init Peer Client. # of ' + connections.length, | |
); | |
initPeerRequest = true; | |
for (let i = 0; i < connections.length; i++) { | |
socket.emit('initiate peer', connections[i].room); | |
// socket.to(connections[i].room).emit('initiate peer'); | |
if (connections[i].initiator) { | |
attemptPeerStart(connections[i]); | |
} | |
} | |
}; | |
const setDebug = (_debug) => { | |
debug = _debug; | |
}; | |
const isInitiator = () => { | |
return initiator; | |
}; | |
module.exports = { | |
initSocketClient: initSocketClient, | |
initPeerClient: initPeerClient, | |
isInitiator: isInitiator, | |
sendData: sendData, | |
getData: getData, | |
isPeerStarted: isPeerStarted, | |
setDebug: setDebug, | |
}; | |
},{"./turnRequest":74,"simple-peer":41,"socket.io-client":57}]},{},[73])(73) | |
}); |
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