requirebin sketch

index.js

var WebTorrent = require('webtorrent');

var domify = require('domify')
document.body.appendChild(domify("loading..."));

var infohash = "3a3cca2992987699def85776f58c3c510bc2b166";

var client = new WebTorrent()

function onTorrent(torrent) {
  // Got torrent metadata!
  torrent.files[0].createReadStream().on('data', function(data) { 
    document.write(data);
  });
}

client.add({
    infoHash: infohash,
    announce: [ 'wss://tracker.webtorrent.io' ]
}, onTorrent)
  

minified.js

require=function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({1:[function(require,module,exports){},{}],2:[function(require,module,exports){var util=require("util/");var pSlice=Array.prototype.slice;var hasOwn=Object.prototype.hasOwnProperty;var assert=module.exports=ok;assert.AssertionError=function AssertionError(options){this.name="AssertionError";this.actual=options.actual;this.expected=options.expected;this.operator=options.operator;if(options.message){this.message=options.message;this.generatedMessage=false}else{this.message=getMessage(this);this.generatedMessage=true}var stackStartFunction=options.stackStartFunction||fail;if(Error.captureStackTrace){Error.captureStackTrace(this,stackStartFunction)}else{var err=new Error;if(err.stack){var out=err.stack;var fn_name=stackStartFunction.name;var idx=out.indexOf("\n"+fn_name);if(idx>=0){var next_line=out.indexOf("\n",idx+1);out=out.substring(next_line+1)}this.stack=out}}};util.inherits(assert.AssertionError,Error);function replacer(key,value){if(util.isUndefined(value)){return""+value}if(util.isNumber(value)&&(isNaN(value)||!isFinite(value))){return value.toString()}if(util.isFunction(value)||util.isRegExp(value)){return value.toString()}return value}function truncate(s,n){if(util.isString(s)){return s.length<n?s:s.slice(0,n)}else{return s}}function getMessage(self){return truncate(JSON.stringify(self.actual,replacer),128)+" "+self.operator+" "+truncate(JSON.stringify(self.expected,replacer),128)}function fail(actual,expected,message,operator,stackStartFunction){throw new assert.AssertionError({message:message,actual:actual,expected:expected,operator:operator,stackStartFunction:stackStartFunction})}assert.fail=fail;function ok(value,message){if(!value)fail(value,true,message,"==",assert.ok)}assert.ok=ok;assert.equal=function equal(actual,expected,message){if(actual!=expected)fail(actual,expected,message,"==",assert.equal)};assert.notEqual=function notEqual(actual,expected,message){if(actual==expected){fail(actual,expected,message,"!=",assert.notEqual)}};assert.deepEqual=function deepEqual(actual,expected,message){if(!_deepEqual(actual,expected)){fail(actual,expected,message,"deepEqual",assert.deepEqual)}};function _deepEqual(actual,expected){if(actual===expected){return true}else if(util.isBuffer(actual)&&util.isBuffer(expected)){if(actual.length!=expected.length)return false;for(var i=0;i<actual.length;i++){if(actual[i]!==expected[i])return false}return true}else if(util.isDate(actual)&&util.isDate(expected)){return actual.getTime()===expected.getTime()}else if(util.isRegExp(actual)&&util.isRegExp(expected)){return actual.source===expected.source&&actual.global===expected.global&&actual.multiline===expected.multiline&&actual.lastIndex===expected.lastIndex&&actual.ignoreCase===expected.ignoreCase}else if(!util.isObject(actual)&&!util.isObject(expected)){return actual==expected}else{return objEquiv(actual,expected)}}function isArguments(object){return Object.prototype.toString.call(object)=="[object Arguments]"}function objEquiv(a,b){if(util.isNullOrUndefined(a)||util.isNullOrUndefined(b))return false;if(a.prototype!==b.prototype)return false;if(isArguments(a)){if(!isArguments(b)){return false}a=pSlice.call(a);b=pSlice.call(b);return _deepEqual(a,b)}try{var ka=objectKeys(a),kb=objectKeys(b),key,i}catch(e){return false}if(ka.length!=kb.length)return false;ka.sort();kb.sort();for(i=ka.length-1;i>=0;i--){if(ka[i]!=kb[i])return false}for(i=ka.length-1;i>=0;i--){key=ka[i];if(!_deepEqual(a[key],b[key]))return false}return true}assert.notDeepEqual=function notDeepEqual(actual,expected,message){if(_deepEqual(actual,expected)){fail(actual,expected,message,"notDeepEqual",assert.notDeepEqual)}};assert.strictEqual=function strictEqual(actual,expected,message){if(actual!==expected){fail(actual,expected,message,"===",assert.strictEqual)}};assert.notStrictEqual=function notStrictEqual(actual,expected,message){if(actual===expected){fail(actual,expected,message,"!==",assert.notStrictEqual)}};function expectedException(actual,expected){if(!actual||!expected){return false}if(Object.prototype.toString.call(expected)=="[object RegExp]"){return expected.test(actual)}else if(actual instanceof expected){return true}else if(expected.call({},actual)===true){return true}return false}function _throws(shouldThrow,block,expected,message){var actual;if(util.isString(expected)){message=expected;expected=null}try{block()}catch(e){actual=e}message=(expected&&expected.name?" ("+expected.name+").":".")+(message?" "+message:".");if(shouldThrow&&!actual){fail(actual,expected,"Missing expected exception"+message)}if(!shouldThrow&&expectedException(actual,expected)){fail(actual,expected,"Got unwanted exception"+message)}if(shouldThrow&&actual&&expected&&!expectedException(actual,expected)||!shouldThrow&&actual){throw actual}}assert.throws=function(block,error,message){_throws.apply(this,[true].concat(pSlice.call(arguments)))};assert.doesNotThrow=function(block,message){_throws.apply(this,[false].concat(pSlice.call(arguments)))};assert.ifError=function(err){if(err){throw err}};var objectKeys=Object.keys||function(obj){var keys=[];for(var key in obj){if(hasOwn.call(obj,key))keys.push(key)}return keys}},{"util/":4}],3:[function(require,module,exports){module.exports=function isBuffer(arg){return arg&&typeof arg==="object"&&typeof arg.copy==="function"&&typeof arg.fill==="function"&&typeof arg.readUInt8==="function"}},{}],4:[function(require,module,exports){(function(process,global){var formatRegExp=/%[sdj%]/g;exports.format=function(f){if(!isString(f)){var objects=[];for(var i=0;i<arguments.length;i++){objects.push(inspect(arguments[i]))}return objects.join(" ")}var i=1;var args=arguments;var len=args.length;var str=String(f).replace(formatRegExp,function(x){if(x==="%%")return"%";if(i>=len)return x;switch(x){case"%s":return String(args[i++]);case"%d":return Number(args[i++]);case"%j":try{return JSON.stringify(args[i++])}catch(_){return"[Circular]"}default:return x}});for(var x=args[i];i<len;x=args[++i]){if(isNull(x)||!isObject(x)){str+=" "+x}else{str+=" "+inspect(x)}}return str};exports.deprecate=function(fn,msg){if(isUndefined(global.process)){return function(){return exports.deprecate(fn,msg).apply(this,arguments)}}if(process.noDeprecation===true){return fn}var warned=false;function deprecated(){if(!warned){if(process.throwDeprecation){throw new Error(msg)}else if(process.traceDeprecation){console.trace(msg)}else{console.error(msg)}warned=true}return fn.apply(this,arguments)}return deprecated};var debugs={};var debugEnviron;exports.debuglog=function(set){if(isUndefined(debugEnviron))debugEnviron=process.env.NODE_DEBUG||"";set=set.toUpperCase();if(!debugs[set]){if(new RegExp("\\b"+set+"\\b","i").test(debugEnviron)){var pid=process.pid;debugs[set]=function(){var msg=exports.format.apply(exports,arguments);console.error("%s %d: %s",set,pid,msg)}}else{debugs[set]=function(){}}}return debugs[set]};function inspect(obj,opts){var ctx={seen:[],stylize:stylizeNoColor};if(arguments.length>=3)ctx.depth=arguments[2];if(arguments.length>=4)ctx.colors=arguments[3];if(isBoolean(opts)){ctx.showHidden=opts}else if(opts){exports._extend(ctx,opts)}if(isUndefined(ctx.showHidden))ctx.showHidden=false;if(isUndefined(ctx.depth))ctx.depth=2;if(isUndefined(ctx.colors))ctx.colors=false;if(isUndefined(ctx.customInspect))ctx.customInspect=true;if(ctx.colors)ctx.stylize=stylizeWithColor;return formatValue(ctx,obj,ctx.depth)}exports.inspect=inspect;inspect.colors={bold:[1,22],italic:[3,23],underline:[4,24],inverse:[7,27],white:[37,39],grey:[90,39],black:[30,39],blue:[34,39],cyan:[36,39],green:[32,39],magenta:[35,39],red:[31,39],yellow:[33,39]};inspect.styles={special:"cyan",number:"yellow","boolean":"yellow",undefined:"grey","null":"bold",string:"green",date:"magenta",regexp:"red"};function stylizeWithColor(str,styleType){var style=inspect.styles[styleType];if(style){return"["+inspect.colors[style][0]+"m"+str+"["+inspect.colors[style][1]+"m"}else{return str}}function stylizeNoColor(str,styleType){return str}function arrayToHash(array){var hash={};array.forEach(function(val,idx){hash[val]=true});return hash}function formatValue(ctx,value,recurseTimes){if(ctx.customInspect&&value&&isFunction(value.inspect)&&value.inspect!==exports.inspect&&!(value.constructor&&value.constructor.prototype===value)){var ret=value.inspect(recurseTimes,ctx);if(!isString(ret)){ret=formatValue(ctx,ret,recurseTimes)}return ret}var primitive=formatPrimitive(ctx,value);if(primitive){return primitive}var keys=Object.keys(value);var visibleKeys=arrayToHash(keys);if(ctx.showHidden){keys=Object.getOwnPropertyNames(value)}if(isError(value)&&(keys.indexOf("message")>=0||keys.indexOf("description")>=0)){return formatError(value)}if(keys.length===0){if(isFunction(value)){var name=value.name?": "+value.name:"";return ctx.stylize("[Function"+name+"]","special")}if(isRegExp(value)){return ctx.stylize(RegExp.prototype.toString.call(value),"regexp")}if(isDate(value)){return ctx.stylize(Date.prototype.toString.call(value),"date")}if(isError(value)){return formatError(value)}}var base="",array=false,braces=["{","}"];if(isArray(value)){array=true;braces=["[","]"]}if(isFunction(value)){var n=value.name?": "+value.name:"";base=" [Function"+n+"]"}if(isRegExp(value)){base=" "+RegExp.prototype.toString.call(value)}if(isDate(value)){base=" "+Date.prototype.toUTCString.call(value)}if(isError(value)){base=" "+formatError(value)}if(keys.length===0&&(!array||value.length==0)){return braces[0]+base+braces[1]}if(recurseTimes<0){if(isRegExp(value)){return ctx.stylize(RegExp.prototype.toString.call(value),"regexp")}else{return ctx.stylize("[Object]","special")}}ctx.seen.push(value);var output;if(array){output=formatArray(ctx,value,recurseTimes,visibleKeys,keys)}else{output=keys.map(function(key){return formatProperty(ctx,value,recurseTimes,visibleKeys,key,array)})}ctx.seen.pop();return reduceToSingleString(output,base,braces)}function formatPrimitive(ctx,value){if(isUndefined(value))return ctx.stylize("undefined","undefined");if(isString(value)){var simple="'"+JSON.stringify(value).replace(/^"|"$/g,"").replace(/'/g,"\\'").replace(/\\"/g,'"')+"'";return ctx.stylize(simple,"string")}if(isNumber(value))return ctx.stylize(""+value,"number");if(isBoolean(value))return ctx.stylize(""+value,"boolean");if(isNull(value))return ctx.stylize("null","null")}function formatError(value){return"["+Error.prototype.toString.call(value)+"]"}function formatArray(ctx,value,recurseTimes,visibleKeys,keys){var output=[];for(var i=0,l=value.length;i<l;++i){if(hasOwnProperty(value,String(i))){output.push(formatProperty(ctx,value,recurseTimes,visibleKeys,String(i),true))}else{output.push("")}}keys.forEach(function(key){if(!key.match(/^\d+$/)){output.push(formatProperty(ctx,value,recurseTimes,visibleKeys,key,true))}});return output}function formatProperty(ctx,value,recurseTimes,visibleKeys,key,array){var name,str,desc;desc=Object.getOwnPropertyDescriptor(value,key)||{value:value[key]};if(desc.get){if(desc.set){str=ctx.stylize("[Getter/Setter]","special")}else{str=ctx.stylize("[Getter]","special")}}else{if(desc.set){str=ctx.stylize("[Setter]","special")}}if(!hasOwnProperty(visibleKeys,key)){name="["+key+"]"}if(!str){if(ctx.seen.indexOf(desc.value)<0){if(isNull(recurseTimes)){str=formatValue(ctx,desc.value,null)}else{str=formatValue(ctx,desc.value,recurseTimes-1)}if(str.indexOf("\n")>-1){if(array){str=str.split("\n").map(function(line){return"  "+line}).join("\n").substr(2)}else{str="\n"+str.split("\n").map(function(line){return"   "+line}).join("\n")}}}else{str=ctx.stylize("[Circular]","special")}}if(isUndefined(name)){if(array&&key.match(/^\d+$/)){return str}name=JSON.stringify(""+key);if(name.match(/^"([a-zA-Z_][a-zA-Z_0-9]*)"$/)){name=name.substr(1,name.length-2);name=ctx.stylize(name,"name")}else{name=name.replace(/'/g,"\\'").replace(/\\"/g,'"').replace(/(^"|"$)/g,"'");name=ctx.stylize(name,"string")}}return name+": "+str}function reduceToSingleString(output,base,braces){var numLinesEst=0;var length=output.reduce(function(prev,cur){numLinesEst++;if(cur.indexOf("\n")>=0)numLinesEst++;return prev+cur.replace(/\u001b\[\d\d?m/g,"").length+1},0);if(length>60){return braces[0]+(base===""?"":base+"\n ")+" "+output.join(",\n  ")+" "+braces[1]}return braces[0]+base+" "+output.join(", ")+" "+braces[1]}function isArray(ar){return Array.isArray(ar)}exports.isArray=isArray;function isBoolean(arg){return typeof arg==="boolean"}exports.isBoolean=isBoolean;function isNull(arg){return arg===null}exports.isNull=isNull;function isNullOrUndefined(arg){return arg==null}exports.isNullOrUndefined=isNullOrUndefined;function isNumber(arg){return typeof arg==="number"}exports.isNumber=isNumber;function isString(arg){return typeof arg==="string"}exports.isString=isString;function isSymbol(arg){return typeof arg==="symbol"}exports.isSymbol=isSymbol;function isUndefined(arg){return arg===void 0}exports.isUndefined=isUndefined;function isRegExp(re){return isObject(re)&&objectToString(re)==="[object RegExp]"}exports.isRegExp=isRegExp;function isObject(arg){return typeof arg==="object"&&arg!==null}exports.isObject=isObject;function isDate(d){return isObject(d)&&objectToString(d)==="[object Date]"}exports.isDate=isDate;function isError(e){return isObject(e)&&(objectToString(e)==="[object Error]"||e instanceof Error)}exports.isError=isError;function isFunction(arg){return typeof arg==="function"}exports.isFunction=isFunction;function isPrimitive(arg){return arg===null||typeof arg==="boolean"||typeof arg==="number"||typeof arg==="string"||typeof arg==="symbol"||typeof arg==="undefined"}exports.isPrimitive=isPrimitive;exports.isBuffer=require("./support/isBuffer");function objectToString(o){return Object.prototype.toString.call(o)}function pad(n){return n<10?"0"+n.toString(10):n.toString(10)}var months=["Jan","Feb","Mar","Apr","May","Jun","Jul","Aug","Sep","Oct","Nov","Dec"];function timestamp(){var d=new Date;var time=[pad(d.getHours()),pad(d.getMinutes()),pad(d.getSeconds())].join(":");return[d.getDate(),months[d.getMonth()],time].join(" ")}exports.log=function(){console.log("%s - %s",timestamp(),exports.format.apply(exports,arguments))};exports.inherits=require("inherits");exports._extend=function(origin,add){if(!add||!isObject(add))return origin;var keys=Object.keys(add);var i=keys.length;while(i--){origin[keys[i]]=add[keys[i]]}return origin};function hasOwnProperty(obj,prop){return Object.prototype.hasOwnProperty.call(obj,prop)}}).call(this,require("_process"),typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{"./support/isBuffer":3,_process:13,inherits:10}],5:[function(require,module,exports){module.exports=require(1)},{}],6:[function(require,module,exports){var base64=require("base64-js");var ieee754=require("ieee754");exports.Buffer=Buffer;exports.SlowBuffer=Buffer;exports.INSPECT_MAX_BYTES=50;Buffer.poolSize=8192;var TYPED_ARRAY_SUPPORT=function(){try{var buf=new ArrayBuffer(0);var arr=new Uint8Array(buf);arr.foo=function(){return 42};return 42===arr.foo()&&typeof arr.subarray==="function"&&new Uint8Array(1).subarray(1,1).byteLength===0}catch(e){return false}}();function Buffer(subject,encoding,noZero){if(!(this instanceof Buffer))return new Buffer(subject,encoding,noZero);var type=typeof subject;var length;if(type==="number")length=subject>0?subject>>>0:0;else if(type==="string"){if(encoding==="base64")subject=base64clean(subject);length=Buffer.byteLength(subject,encoding)}else if(type==="object"&&subject!==null){if(subject.type==="Buffer"&&isArray(subject.data))subject=subject.data;length=+subject.length>0?Math.floor(+subject.length):0}else throw new Error("First argument needs to be a number, array or string.");var buf;if(TYPED_ARRAY_SUPPORT){buf=Buffer._augment(new Uint8Array(length))}else{buf=this;buf.length=length;buf._isBuffer=true}var i;if(TYPED_ARRAY_SUPPORT&&typeof subject.byteLength==="number"){buf._set(subject)}else if(isArrayish(subject)){if(Buffer.isBuffer(subject)){for(i=0;i<length;i++)buf[i]=subject.readUInt8(i)}else{for(i=0;i<length;i++)buf[i]=(subject[i]%256+256)%256}}else if(type==="string"){buf.write(subject,0,encoding)}else if(type==="number"&&!TYPED_ARRAY_SUPPORT&&!noZero){for(i=0;i<length;i++){buf[i]=0}}return buf}Buffer.isEncoding=function(encoding){switch(String(encoding).toLowerCase()){case"hex":case"utf8":case"utf-8":case"ascii":case"binary":case"base64":case"raw":case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":return true;default:return false}};Buffer.isBuffer=function(b){return!!(b!=null&&b._isBuffer)};Buffer.byteLength=function(str,encoding){var ret;str=str.toString();switch(encoding||"utf8"){case"hex":ret=str.length/2;break;case"utf8":case"utf-8":ret=utf8ToBytes(str).length;break;case"ascii":case"binary":case"raw":ret=str.length;break;case"base64":ret=base64ToBytes(str).length;break;case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":ret=str.length*2;break;default:throw new Error("Unknown encoding")}return ret};Buffer.concat=function(list,totalLength){assert(isArray(list),"Usage: Buffer.concat(list[, length])");if(list.length===0){return new Buffer(0)}else if(list.length===1){return list[0]}var i;if(totalLength===undefined){totalLength=0;for(i=0;i<list.length;i++){totalLength+=list[i].length}}var buf=new Buffer(totalLength);var pos=0;for(i=0;i<list.length;i++){var item=list[i];item.copy(buf,pos);pos+=item.length}return buf};Buffer.compare=function(a,b){assert(Buffer.isBuffer(a)&&Buffer.isBuffer(b),"Arguments must be Buffers");var x=a.length;var y=b.length;for(var i=0,len=Math.min(x,y);i<len&&a[i]===b[i];i++){}if(i!==len){x=a[i];y=b[i]}if(x<y){return-1}if(y<x){return 1}return 0};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;assert(strLen%2===0,"Invalid hex string");if(length>strLen/2){length=strLen/2}for(var i=0;i<length;i++){var byte=parseInt(string.substr(i*2,2),16);assert(!isNaN(byte),"Invalid hex string");buf[offset+i]=byte}return i}function utf8Write(buf,string,offset,length){var charsWritten=blitBuffer(utf8ToBytes(string),buf,offset,length);return charsWritten}function asciiWrite(buf,string,offset,length){var charsWritten=blitBuffer(asciiToBytes(string),buf,offset,length);return charsWritten}function binaryWrite(buf,string,offset,length){return asciiWrite(buf,string,offset,length)}function base64Write(buf,string,offset,length){var charsWritten=blitBuffer(base64ToBytes(string),buf,offset,length);return charsWritten}function utf16leWrite(buf,string,offset,length){var charsWritten=blitBuffer(utf16leToBytes(string),buf,offset,length);return charsWritten}Buffer.prototype.write=function(string,offset,length,encoding){if(isFinite(offset)){if(!isFinite(length)){encoding=length;length=undefined}}else{var swap=encoding;encoding=offset;offset=length;length=swap}offset=Number(offset)||0;var remaining=this.length-offset;if(!length){length=remaining}else{length=Number(length);if(length>remaining){length=remaining}}encoding=String(encoding||"utf8").toLowerCase();var ret;switch(encoding){case"hex":ret=hexWrite(this,string,offset,length);break;case"utf8":case"utf-8":ret=utf8Write(this,string,offset,length);break;case"ascii":ret=asciiWrite(this,string,offset,length);break;case"binary":ret=binaryWrite(this,string,offset,length);break;case"base64":ret=base64Write(this,string,offset,length);break;case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":ret=utf16leWrite(this,string,offset,length);break;default:throw new Error("Unknown encoding")}return ret};Buffer.prototype.toString=function(encoding,start,end){var self=this;encoding=String(encoding||"utf8").toLowerCase();start=Number(start)||0;end=end===undefined?self.length:Number(end);if(end===start)return"";var ret;switch(encoding){case"hex":ret=hexSlice(self,start,end);break;case"utf8":case"utf-8":ret=utf8Slice(self,start,end);break;case"ascii":ret=asciiSlice(self,start,end);break;case"binary":ret=binarySlice(self,start,end);break;case"base64":ret=base64Slice(self,start,end);break;case"ucs2":case"ucs-2":case"utf16le":case"utf-16le":ret=utf16leSlice(self,start,end);break;default:throw new Error("Unknown encoding")}return ret};Buffer.prototype.toJSON=function(){return{type:"Buffer",data:Array.prototype.slice.call(this._arr||this,0)}};Buffer.prototype.equals=function(b){assert(Buffer.isBuffer(b),"Argument must be a Buffer");return Buffer.compare(this,b)===0};Buffer.prototype.compare=function(b){assert(Buffer.isBuffer(b),"Argument must be a Buffer");return Buffer.compare(this,b)};Buffer.prototype.copy=function(target,target_start,start,end){var source=this;if(!start)start=0;if(!end&&end!==0)end=this.length;if(!target_start)target_start=0;if(end===start)return;if(target.length===0||source.length===0)return;assert(end>=start,"sourceEnd < sourceStart");assert(target_start>=0&&target_start<target.length,"targetStart out of bounds");assert(start>=0&&start<source.length,"sourceStart out of bounds");assert(end>=0&&end<=source.length,"sourceEnd out of bounds");if(end>this.length)end=this.length;if(target.length-target_start<end-start)end=target.length-target_start+start;var len=end-start;if(len<100||!TYPED_ARRAY_SUPPORT){for(var i=0;i<len;i++){target[i+target_start]=this[i+start]}}else{target._set(this.subarray(start,start+len),target_start)}};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){var res="";var tmp="";end=Math.min(buf.length,end);for(var i=start;i<end;i++){if(buf[i]<=127){res+=decodeUtf8Char(tmp)+String.fromCharCode(buf[i]);tmp=""}else{tmp+="%"+buf[i].toString(16)}}return res+decodeUtf8Char(tmp)}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])}return ret}function binarySlice(buf,start,end){return asciiSlice(buf,start,end)}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+=toHex(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(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;if(TYPED_ARRAY_SUPPORT){return Buffer._augment(this.subarray(start,end))}else{var sliceLen=end-start;var newBuf=new Buffer(sliceLen,undefined,true);for(var i=0;i<sliceLen;i++){newBuf[i]=this[i+start]}return newBuf}};Buffer.prototype.get=function(offset){console.log(".get() is deprecated. Access using array indexes instead.");return this.readUInt8(offset)};Buffer.prototype.set=function(v,offset){console.log(".set() is deprecated. Access using array indexes instead.");return this.writeUInt8(v,offset)};Buffer.prototype.readUInt8=function(offset,noAssert){if(!noAssert){assert(offset!==undefined&&offset!==null,"missing offset");assert(offset<this.length,"Trying to read beyond buffer length")}if(offset>=this.length)return;return this[offset]};function readUInt16(buf,offset,littleEndian,noAssert){if(!noAssert){assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+1<buf.length,"Trying to read beyond buffer length")}var len=buf.length;if(offset>=len)return;var val;if(littleEndian){val=buf[offset];if(offset+1<len)val|=buf[offset+1]<<8}else{val=buf[offset]<<8;if(offset+1<len)val|=buf[offset+1]}return val}Buffer.prototype.readUInt16LE=function(offset,noAssert){return readUInt16(this,offset,true,noAssert)};Buffer.prototype.readUInt16BE=function(offset,noAssert){return readUInt16(this,offset,false,noAssert)};function readUInt32(buf,offset,littleEndian,noAssert){if(!noAssert){assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+3<buf.length,"Trying to read beyond buffer length")}var len=buf.length;if(offset>=len)return;var val;if(littleEndian){if(offset+2<len)val=buf[offset+2]<<16;if(offset+1<len)val|=buf[offset+1]<<8;val|=buf[offset];if(offset+3<len)val=val+(buf[offset+3]<<24>>>0)}else{if(offset+1<len)val=buf[offset+1]<<16;if(offset+2<len)val|=buf[offset+2]<<8;if(offset+3<len)val|=buf[offset+3];val=val+(buf[offset]<<24>>>0)}return val}Buffer.prototype.readUInt32LE=function(offset,noAssert){return readUInt32(this,offset,true,noAssert)};Buffer.prototype.readUInt32BE=function(offset,noAssert){return readUInt32(this,offset,false,noAssert)};Buffer.prototype.readInt8=function(offset,noAssert){if(!noAssert){assert(offset!==undefined&&offset!==null,"missing offset");assert(offset<this.length,"Trying to read beyond buffer length")}if(offset>=this.length)return;var neg=this[offset]&128;if(neg)return(255-this[offset]+1)*-1;else return this[offset]};function readInt16(buf,offset,littleEndian,noAssert){if(!noAssert){assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+1<buf.length,"Trying to read beyond buffer length")}var len=buf.length;if(offset>=len)return;var val=readUInt16(buf,offset,littleEndian,true);var neg=val&32768;if(neg)return(65535-val+1)*-1;else return val}Buffer.prototype.readInt16LE=function(offset,noAssert){return readInt16(this,offset,true,noAssert)};Buffer.prototype.readInt16BE=function(offset,noAssert){return readInt16(this,offset,false,noAssert)};function readInt32(buf,offset,littleEndian,noAssert){if(!noAssert){assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+3<buf.length,"Trying to read beyond buffer length")}var len=buf.length;if(offset>=len)return;var val=readUInt32(buf,offset,littleEndian,true);var neg=val&2147483648;if(neg)return(4294967295-val+1)*-1;else return val}Buffer.prototype.readInt32LE=function(offset,noAssert){return readInt32(this,offset,true,noAssert)};Buffer.prototype.readInt32BE=function(offset,noAssert){return readInt32(this,offset,false,noAssert)};function readFloat(buf,offset,littleEndian,noAssert){if(!noAssert){assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset+3<buf.length,"Trying to read beyond buffer length")}return ieee754.read(buf,offset,littleEndian,23,4)}Buffer.prototype.readFloatLE=function(offset,noAssert){return readFloat(this,offset,true,noAssert)};Buffer.prototype.readFloatBE=function(offset,noAssert){return readFloat(this,offset,false,noAssert)};function readDouble(buf,offset,littleEndian,noAssert){if(!noAssert){assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset+7<buf.length,"Trying to read beyond buffer length")}return ieee754.read(buf,offset,littleEndian,52,8)}Buffer.prototype.readDoubleLE=function(offset,noAssert){return readDouble(this,offset,true,noAssert)};Buffer.prototype.readDoubleBE=function(offset,noAssert){return readDouble(this,offset,false,noAssert)};Buffer.prototype.writeUInt8=function(value,offset,noAssert){if(!noAssert){assert(value!==undefined&&value!==null,"missing value");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset<this.length,"trying to write beyond buffer length");verifuint(value,255)}if(offset>=this.length)return;this[offset]=value;return offset+1};function writeUInt16(buf,value,offset,littleEndian,noAssert){if(!noAssert){assert(value!==undefined&&value!==null,"missing value");assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+1<buf.length,"trying to write beyond buffer length");verifuint(value,65535)}var len=buf.length;if(offset>=len)return;for(var i=0,j=Math.min(len-offset,2);i<j;i++){buf[offset+i]=(value&255<<8*(littleEndian?i:1-i))>>>(littleEndian?i:1-i)*8}return offset+2}Buffer.prototype.writeUInt16LE=function(value,offset,noAssert){return writeUInt16(this,value,offset,true,noAssert)};Buffer.prototype.writeUInt16BE=function(value,offset,noAssert){return writeUInt16(this,value,offset,false,noAssert)};function writeUInt32(buf,value,offset,littleEndian,noAssert){if(!noAssert){assert(value!==undefined&&value!==null,"missing value");assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+3<buf.length,"trying to write beyond buffer length");verifuint(value,4294967295)}var len=buf.length;if(offset>=len)return;for(var i=0,j=Math.min(len-offset,4);i<j;i++){buf[offset+i]=value>>>(littleEndian?i:3-i)*8&255}return offset+4}Buffer.prototype.writeUInt32LE=function(value,offset,noAssert){return writeUInt32(this,value,offset,true,noAssert)};Buffer.prototype.writeUInt32BE=function(value,offset,noAssert){return writeUInt32(this,value,offset,false,noAssert)};Buffer.prototype.writeInt8=function(value,offset,noAssert){if(!noAssert){assert(value!==undefined&&value!==null,"missing value");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset<this.length,"Trying to write beyond buffer length");verifsint(value,127,-128)}if(offset>=this.length)return;if(value>=0)this.writeUInt8(value,offset,noAssert);else this.writeUInt8(255+value+1,offset,noAssert);return offset+1};function writeInt16(buf,value,offset,littleEndian,noAssert){if(!noAssert){assert(value!==undefined&&value!==null,"missing value");assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+1<buf.length,"Trying to write beyond buffer length");verifsint(value,32767,-32768)}var len=buf.length;if(offset>=len)return;if(value>=0)writeUInt16(buf,value,offset,littleEndian,noAssert);else writeUInt16(buf,65535+value+1,offset,littleEndian,noAssert);return offset+2}Buffer.prototype.writeInt16LE=function(value,offset,noAssert){return writeInt16(this,value,offset,true,noAssert)};Buffer.prototype.writeInt16BE=function(value,offset,noAssert){return writeInt16(this,value,offset,false,noAssert)};function writeInt32(buf,value,offset,littleEndian,noAssert){if(!noAssert){assert(value!==undefined&&value!==null,"missing value");assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+3<buf.length,"Trying to write beyond buffer length");verifsint(value,2147483647,-2147483648)}var len=buf.length;if(offset>=len)return;if(value>=0)writeUInt32(buf,value,offset,littleEndian,noAssert);else writeUInt32(buf,4294967295+value+1,offset,littleEndian,noAssert);return offset+4}Buffer.prototype.writeInt32LE=function(value,offset,noAssert){return writeInt32(this,value,offset,true,noAssert)};Buffer.prototype.writeInt32BE=function(value,offset,noAssert){return writeInt32(this,value,offset,false,noAssert)};function writeFloat(buf,value,offset,littleEndian,noAssert){if(!noAssert){assert(value!==undefined&&value!==null,"missing value");assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+3<buf.length,"Trying to write beyond buffer length");verifIEEE754(value,3.4028234663852886e38,-3.4028234663852886e38)}var len=buf.length;if(offset>=len)return;ieee754.write(buf,value,offset,littleEndian,23,4);
return offset+4}Buffer.prototype.writeFloatLE=function(value,offset,noAssert){return writeFloat(this,value,offset,true,noAssert)};Buffer.prototype.writeFloatBE=function(value,offset,noAssert){return writeFloat(this,value,offset,false,noAssert)};function writeDouble(buf,value,offset,littleEndian,noAssert){if(!noAssert){assert(value!==undefined&&value!==null,"missing value");assert(typeof littleEndian==="boolean","missing or invalid endian");assert(offset!==undefined&&offset!==null,"missing offset");assert(offset+7<buf.length,"Trying to write beyond buffer length");verifIEEE754(value,1.7976931348623157e308,-1.7976931348623157e308)}var len=buf.length;if(offset>=len)return;ieee754.write(buf,value,offset,littleEndian,52,8);return offset+8}Buffer.prototype.writeDoubleLE=function(value,offset,noAssert){return writeDouble(this,value,offset,true,noAssert)};Buffer.prototype.writeDoubleBE=function(value,offset,noAssert){return writeDouble(this,value,offset,false,noAssert)};Buffer.prototype.fill=function(value,start,end){if(!value)value=0;if(!start)start=0;if(!end)end=this.length;assert(end>=start,"end < start");if(end===start)return;if(this.length===0)return;assert(start>=0&&start<this.length,"start out of bounds");assert(end>=0&&end<=this.length,"end out of bounds");var i;if(typeof value==="number"){for(i=start;i<end;i++){this[i]=value}}else{var bytes=utf8ToBytes(value.toString());var len=bytes.length;for(i=start;i<end;i++){this[i]=bytes[i%len]}}return this};Buffer.prototype.inspect=function(){var out=[];var len=this.length;for(var i=0;i<len;i++){out[i]=toHex(this[i]);if(i===exports.INSPECT_MAX_BYTES){out[i+1]="...";break}}return"<Buffer "+out.join(" ")+">"};Buffer.prototype.toArrayBuffer=function(){if(typeof Uint8Array!=="undefined"){if(TYPED_ARRAY_SUPPORT){return new Buffer(this).buffer}else{var buf=new Uint8Array(this.length);for(var i=0,len=buf.length;i<len;i+=1){buf[i]=this[i]}return buf.buffer}}else{throw new Error("Buffer.toArrayBuffer not supported in this browser")}};var BP=Buffer.prototype;Buffer._augment=function(arr){arr._isBuffer=true;arr._get=arr.get;arr._set=arr.set;arr.get=BP.get;arr.set=BP.set;arr.write=BP.write;arr.toString=BP.toString;arr.toLocaleString=BP.toString;arr.toJSON=BP.toJSON;arr.equals=BP.equals;arr.compare=BP.compare;arr.copy=BP.copy;arr.slice=BP.slice;arr.readUInt8=BP.readUInt8;arr.readUInt16LE=BP.readUInt16LE;arr.readUInt16BE=BP.readUInt16BE;arr.readUInt32LE=BP.readUInt32LE;arr.readUInt32BE=BP.readUInt32BE;arr.readInt8=BP.readInt8;arr.readInt16LE=BP.readInt16LE;arr.readInt16BE=BP.readInt16BE;arr.readInt32LE=BP.readInt32LE;arr.readInt32BE=BP.readInt32BE;arr.readFloatLE=BP.readFloatLE;arr.readFloatBE=BP.readFloatBE;arr.readDoubleLE=BP.readDoubleLE;arr.readDoubleBE=BP.readDoubleBE;arr.writeUInt8=BP.writeUInt8;arr.writeUInt16LE=BP.writeUInt16LE;arr.writeUInt16BE=BP.writeUInt16BE;arr.writeUInt32LE=BP.writeUInt32LE;arr.writeUInt32BE=BP.writeUInt32BE;arr.writeInt8=BP.writeInt8;arr.writeInt16LE=BP.writeInt16LE;arr.writeInt16BE=BP.writeInt16BE;arr.writeInt32LE=BP.writeInt32LE;arr.writeInt32BE=BP.writeInt32BE;arr.writeFloatLE=BP.writeFloatLE;arr.writeFloatBE=BP.writeFloatBE;arr.writeDoubleLE=BP.writeDoubleLE;arr.writeDoubleBE=BP.writeDoubleBE;arr.fill=BP.fill;arr.inspect=BP.inspect;arr.toArrayBuffer=BP.toArrayBuffer;return arr};var INVALID_BASE64_RE=/[^+\/0-9A-z]/g;function base64clean(str){str=stringtrim(str).replace(INVALID_BASE64_RE,"");while(str.length%4!==0){str=str+"="}return str}function stringtrim(str){if(str.trim)return str.trim();return str.replace(/^\s+|\s+$/g,"")}function isArray(subject){return(Array.isArray||function(subject){return Object.prototype.toString.call(subject)==="[object Array]"})(subject)}function isArrayish(subject){return isArray(subject)||Buffer.isBuffer(subject)||subject&&typeof subject==="object"&&typeof subject.length==="number"}function toHex(n){if(n<16)return"0"+n.toString(16);return n.toString(16)}function utf8ToBytes(str){var byteArray=[];for(var i=0;i<str.length;i++){var b=str.charCodeAt(i);if(b<=127){byteArray.push(b)}else{var start=i;if(b>=55296&&b<=57343)i++;var h=encodeURIComponent(str.slice(start,i+1)).substr(1).split("%");for(var j=0;j<h.length;j++){byteArray.push(parseInt(h[j],16))}}}return byteArray}function asciiToBytes(str){var byteArray=[];for(var i=0;i<str.length;i++){byteArray.push(str.charCodeAt(i)&255)}return byteArray}function utf16leToBytes(str){var c,hi,lo;var byteArray=[];for(var i=0;i<str.length;i++){c=str.charCodeAt(i);hi=c>>8;lo=c%256;byteArray.push(lo);byteArray.push(hi)}return byteArray}function base64ToBytes(str){return base64.toByteArray(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}function decodeUtf8Char(str){try{return decodeURIComponent(str)}catch(err){return String.fromCharCode(65533)}}function verifuint(value,max){assert(typeof value==="number","cannot write a non-number as a number");assert(value>=0,"specified a negative value for writing an unsigned value");assert(value<=max,"value is larger than maximum value for type");assert(Math.floor(value)===value,"value has a fractional component")}function verifsint(value,max,min){assert(typeof value==="number","cannot write a non-number as a number");assert(value<=max,"value larger than maximum allowed value");assert(value>=min,"value smaller than minimum allowed value");assert(Math.floor(value)===value,"value has a fractional component")}function verifIEEE754(value,max,min){assert(typeof value==="number","cannot write a non-number as a number");assert(value<=max,"value larger than maximum allowed value");assert(value>=min,"value smaller than minimum allowed value")}function assert(test,message){if(!test)throw new Error(message||"Failed assertion")}},{"base64-js":7,ieee754:8}],7:[function(require,module,exports){var lookup="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/";(function(exports){"use strict";var Arr=typeof Uint8Array!=="undefined"?Uint8Array:Array;var PLUS="+".charCodeAt(0);var SLASH="/".charCodeAt(0);var NUMBER="0".charCodeAt(0);var LOWER="a".charCodeAt(0);var UPPER="A".charCodeAt(0);function decode(elt){var code=elt.charCodeAt(0);if(code===PLUS)return 62;if(code===SLASH)return 63;if(code<NUMBER)return-1;if(code<NUMBER+10)return code-NUMBER+26+26;if(code<UPPER+26)return code-UPPER;if(code<LOWER+26)return code-LOWER+26}function b64ToByteArray(b64){var i,j,l,tmp,placeHolders,arr;if(b64.length%4>0){throw new Error("Invalid string. Length must be a multiple of 4")}var len=b64.length;placeHolders="="===b64.charAt(len-2)?2:"="===b64.charAt(len-1)?1:0;arr=new Arr(b64.length*3/4-placeHolders);l=placeHolders>0?b64.length-4:b64.length;var L=0;function push(v){arr[L++]=v}for(i=0,j=0;i<l;i+=4,j+=3){tmp=decode(b64.charAt(i))<<18|decode(b64.charAt(i+1))<<12|decode(b64.charAt(i+2))<<6|decode(b64.charAt(i+3));push((tmp&16711680)>>16);push((tmp&65280)>>8);push(tmp&255)}if(placeHolders===2){tmp=decode(b64.charAt(i))<<2|decode(b64.charAt(i+1))>>4;push(tmp&255)}else if(placeHolders===1){tmp=decode(b64.charAt(i))<<10|decode(b64.charAt(i+1))<<4|decode(b64.charAt(i+2))>>2;push(tmp>>8&255);push(tmp&255)}return arr}function uint8ToBase64(uint8){var i,extraBytes=uint8.length%3,output="",temp,length;function encode(num){return lookup.charAt(num)}function tripletToBase64(num){return encode(num>>18&63)+encode(num>>12&63)+encode(num>>6&63)+encode(num&63)}for(i=0,length=uint8.length-extraBytes;i<length;i+=3){temp=(uint8[i]<<16)+(uint8[i+1]<<8)+uint8[i+2];output+=tripletToBase64(temp)}switch(extraBytes){case 1:temp=uint8[uint8.length-1];output+=encode(temp>>2);output+=encode(temp<<4&63);output+="==";break;case 2:temp=(uint8[uint8.length-2]<<8)+uint8[uint8.length-1];output+=encode(temp>>10);output+=encode(temp>>4&63);output+=encode(temp<<2&63);output+="=";break}return output}exports.toByteArray=b64ToByteArray;exports.fromByteArray=uint8ToBase64})(typeof exports==="undefined"?this.base64js={}:exports)},{}],8:[function(require,module,exports){exports.read=function(buffer,offset,isLE,mLen,nBytes){var e,m,eLen=nBytes*8-mLen-1,eMax=(1<<eLen)-1,eBias=eMax>>1,nBits=-7,i=isLE?nBytes-1:0,d=isLE?-1:1,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,eLen=nBytes*8-mLen-1,eMax=(1<<eLen)-1,eBias=eMax>>1,rt=mLen===23?Math.pow(2,-24)-Math.pow(2,-77):0,i=isLE?0:nBytes-1,d=isLE?1:-1,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&255,i+=d,m/=256,mLen-=8);e=e<<mLen|m;eLen+=mLen;for(;eLen>0;buffer[offset+i]=e&255,i+=d,e/=256,eLen-=8);buffer[offset+i-d]|=s*128}},{}],9:[function(require,module,exports){function EventEmitter(){this._events=this._events||{};this._maxListeners=this._maxListeners||undefined}module.exports=EventEmitter;EventEmitter.EventEmitter=EventEmitter;EventEmitter.prototype._events=undefined;EventEmitter.prototype._maxListeners=undefined;EventEmitter.defaultMaxListeners=10;EventEmitter.prototype.setMaxListeners=function(n){if(!isNumber(n)||n<0||isNaN(n))throw TypeError("n must be a positive number");this._maxListeners=n;return this};EventEmitter.prototype.emit=function(type){var er,handler,len,args,i,listeners;if(!this._events)this._events={};if(type==="error"){if(!this._events.error||isObject(this._events.error)&&!this._events.error.length){er=arguments[1];if(er instanceof Error){throw er}else{throw TypeError('Uncaught, unspecified "error" event.')}return false}}handler=this._events[type];if(isUndefined(handler))return false;if(isFunction(handler)){switch(arguments.length){case 1:handler.call(this);break;case 2:handler.call(this,arguments[1]);break;case 3:handler.call(this,arguments[1],arguments[2]);break;default:len=arguments.length;args=new Array(len-1);for(i=1;i<len;i++)args[i-1]=arguments[i];handler.apply(this,args)}}else if(isObject(handler)){len=arguments.length;args=new Array(len-1);for(i=1;i<len;i++)args[i-1]=arguments[i];listeners=handler.slice();len=listeners.length;for(i=0;i<len;i++)listeners[i].apply(this,args)}return true};EventEmitter.prototype.addListener=function(type,listener){var m;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events)this._events={};if(this._events.newListener)this.emit("newListener",type,isFunction(listener.listener)?listener.listener:listener);if(!this._events[type])this._events[type]=listener;else if(isObject(this._events[type]))this._events[type].push(listener);else this._events[type]=[this._events[type],listener];if(isObject(this._events[type])&&!this._events[type].warned){var m;if(!isUndefined(this._maxListeners)){m=this._maxListeners}else{m=EventEmitter.defaultMaxListeners}if(m&&m>0&&this._events[type].length>m){this._events[type].warned=true;console.error("(node) warning: possible EventEmitter memory "+"leak detected. %d listeners added. "+"Use emitter.setMaxListeners() to increase limit.",this._events[type].length);if(typeof console.trace==="function"){console.trace()}}}return this};EventEmitter.prototype.on=EventEmitter.prototype.addListener;EventEmitter.prototype.once=function(type,listener){if(!isFunction(listener))throw TypeError("listener must be a function");var fired=false;function g(){this.removeListener(type,g);if(!fired){fired=true;listener.apply(this,arguments)}}g.listener=listener;this.on(type,g);return this};EventEmitter.prototype.removeListener=function(type,listener){var list,position,length,i;if(!isFunction(listener))throw TypeError("listener must be a function");if(!this._events||!this._events[type])return this;list=this._events[type];length=list.length;position=-1;if(list===listener||isFunction(list.listener)&&list.listener===listener){delete this._events[type];if(this._events.removeListener)this.emit("removeListener",type,listener)}else if(isObject(list)){for(i=length;i-->0;){if(list[i]===listener||list[i].listener&&list[i].listener===listener){position=i;break}}if(position<0)return this;if(list.length===1){list.length=0;delete this._events[type]}else{list.splice(position,1)}if(this._events.removeListener)this.emit("removeListener",type,listener)}return this};EventEmitter.prototype.removeAllListeners=function(type){var key,listeners;if(!this._events)return this;if(!this._events.removeListener){if(arguments.length===0)this._events={};else if(this._events[type])delete this._events[type];return this}if(arguments.length===0){for(key in this._events){if(key==="removeListener")continue;this.removeAllListeners(key)}this.removeAllListeners("removeListener");this._events={};return this}listeners=this._events[type];if(isFunction(listeners)){this.removeListener(type,listeners)}else{while(listeners.length)this.removeListener(type,listeners[listeners.length-1])}delete this._events[type];return this};EventEmitter.prototype.listeners=function(type){var ret;if(!this._events||!this._events[type])ret=[];else if(isFunction(this._events[type]))ret=[this._events[type]];else ret=this._events[type].slice();return ret};EventEmitter.listenerCount=function(emitter,type){var ret;if(!emitter._events||!emitter._events[type])ret=0;else if(isFunction(emitter._events[type]))ret=1;else ret=emitter._events[type].length;return ret};function isFunction(arg){return typeof arg==="function"}function isNumber(arg){return typeof arg==="number"}function isObject(arg){return typeof arg==="object"&&arg!==null}function isUndefined(arg){return arg===void 0}},{}],10:[function(require,module,exports){if(typeof Object.create==="function"){module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;ctor.prototype=Object.create(superCtor.prototype,{constructor:{value:ctor,enumerable:false,writable:true,configurable:true}})}}else{module.exports=function inherits(ctor,superCtor){ctor.super_=superCtor;var TempCtor=function(){};TempCtor.prototype=superCtor.prototype;ctor.prototype=new TempCtor;ctor.prototype.constructor=ctor}}},{}],11:[function(require,module,exports){module.exports=Array.isArray||function(arr){return Object.prototype.toString.call(arr)=="[object Array]"}},{}],12:[function(require,module,exports){(function(process){function normalizeArray(parts,allowAboveRoot){var up=0;for(var i=parts.length-1;i>=0;i--){var last=parts[i];if(last==="."){parts.splice(i,1)}else if(last===".."){parts.splice(i,1);up++}else if(up){parts.splice(i,1);up--}}if(allowAboveRoot){for(;up--;up){parts.unshift("..")}}return parts}var splitPathRe=/^(\/?|)([\s\S]*?)((?:\.{1,2}|[^\/]+?|)(\.[^.\/]*|))(?:[\/]*)$/;var splitPath=function(filename){return splitPathRe.exec(filename).slice(1)};exports.resolve=function(){var resolvedPath="",resolvedAbsolute=false;for(var i=arguments.length-1;i>=-1&&!resolvedAbsolute;i--){var path=i>=0?arguments[i]:process.cwd();if(typeof path!=="string"){throw new TypeError("Arguments to path.resolve must be strings")}else if(!path){continue}resolvedPath=path+"/"+resolvedPath;resolvedAbsolute=path.charAt(0)==="/"}resolvedPath=normalizeArray(filter(resolvedPath.split("/"),function(p){return!!p}),!resolvedAbsolute).join("/");return(resolvedAbsolute?"/":"")+resolvedPath||"."};exports.normalize=function(path){var isAbsolute=exports.isAbsolute(path),trailingSlash=substr(path,-1)==="/";path=normalizeArray(filter(path.split("/"),function(p){return!!p}),!isAbsolute).join("/");if(!path&&!isAbsolute){path="."}if(path&&trailingSlash){path+="/"}return(isAbsolute?"/":"")+path};exports.isAbsolute=function(path){return path.charAt(0)==="/"};exports.join=function(){var paths=Array.prototype.slice.call(arguments,0);return exports.normalize(filter(paths,function(p,index){if(typeof p!=="string"){throw new TypeError("Arguments to path.join must be strings")}return p}).join("/"))};exports.relative=function(from,to){from=exports.resolve(from).substr(1);to=exports.resolve(to).substr(1);function trim(arr){var start=0;for(;start<arr.length;start++){if(arr[start]!=="")break}var end=arr.length-1;for(;end>=0;end--){if(arr[end]!=="")break}if(start>end)return[];return arr.slice(start,end-start+1)}var fromParts=trim(from.split("/"));var toParts=trim(to.split("/"));var length=Math.min(fromParts.length,toParts.length);var samePartsLength=length;for(var i=0;i<length;i++){if(fromParts[i]!==toParts[i]){samePartsLength=i;break}}var outputParts=[];for(var i=samePartsLength;i<fromParts.length;i++){outputParts.push("..")}outputParts=outputParts.concat(toParts.slice(samePartsLength));return outputParts.join("/")};exports.sep="/";exports.delimiter=":";exports.dirname=function(path){var result=splitPath(path),root=result[0],dir=result[1];if(!root&&!dir){return"."}if(dir){dir=dir.substr(0,dir.length-1)}return root+dir};exports.basename=function(path,ext){var f=splitPath(path)[2];if(ext&&f.substr(-1*ext.length)===ext){f=f.substr(0,f.length-ext.length)}return f};exports.extname=function(path){return splitPath(path)[3]};function filter(xs,f){if(xs.filter)return xs.filter(f);var res=[];for(var i=0;i<xs.length;i++){if(f(xs[i],i,xs))res.push(xs[i])}return res}var substr="ab".substr(-1)==="b"?function(str,start,len){return str.substr(start,len)}:function(str,start,len){if(start<0)start=str.length+start;return str.substr(start,len)}}).call(this,require("_process"))},{_process:13}],13:[function(require,module,exports){var process=module.exports={};process.nextTick=function(){var canSetImmediate=typeof window!=="undefined"&&window.setImmediate;var canPost=typeof window!=="undefined"&&window.postMessage&&window.addEventListener;if(canSetImmediate){return function(f){return window.setImmediate(f)}}if(canPost){var queue=[];window.addEventListener("message",function(ev){var source=ev.source;if((source===window||source===null)&&ev.data==="process-tick"){ev.stopPropagation();if(queue.length>0){var fn=queue.shift();fn()}}},true);return function nextTick(fn){queue.push(fn);window.postMessage("process-tick","*")}}return function nextTick(fn){setTimeout(fn,0)}}();process.title="browser";process.browser=true;process.env={};process.argv=[];function noop(){}process.on=noop;process.addListener=noop;process.once=noop;process.off=noop;process.removeListener=noop;process.removeAllListeners=noop;process.emit=noop;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")}},{}],14:[function(require,module,exports){(function(global){(function(root){var freeExports=typeof exports=="object"&&exports;var freeModule=typeof module=="object"&&module&&module.exports==freeExports&&module;var freeGlobal=typeof global=="object"&&global;if(freeGlobal.global===freeGlobal||freeGlobal.window===freeGlobal){root=freeGlobal}var punycode,maxInt=2147483647,base=36,tMin=1,tMax=26,skew=38,damp=700,initialBias=72,initialN=128,delimiter="-",regexPunycode=/^xn--/,regexNonASCII=/[^ -~]/,regexSeparators=/\x2E|\u3002|\uFF0E|\uFF61/g,errors={overflow:"Overflow: input needs wider integers to process","not-basic":"Illegal input >= 0x80 (not a basic code point)","invalid-input":"Invalid input"},baseMinusTMin=base-tMin,floor=Math.floor,stringFromCharCode=String.fromCharCode,key;function error(type){throw RangeError(errors[type])}function map(array,fn){var length=array.length;while(length--){array[length]=fn(array[length])}return array}function mapDomain(string,fn){return map(string.split(regexSeparators),fn).join(".")}function ucs2decode(string){var output=[],counter=0,length=string.length,value,extra;while(counter<length){value=string.charCodeAt(counter++);if(value>=55296&&value<=56319&&counter<length){extra=string.charCodeAt(counter++);if((extra&64512)==56320){output.push(((value&1023)<<10)+(extra&1023)+65536)}else{output.push(value);counter--}}else{output.push(value)}}return output}function ucs2encode(array){return map(array,function(value){var output="";if(value>65535){value-=65536;output+=stringFromCharCode(value>>>10&1023|55296);value=56320|value&1023}output+=stringFromCharCode(value);return output}).join("")}function basicToDigit(codePoint){if(codePoint-48<10){return codePoint-22}if(codePoint-65<26){return codePoint-65}if(codePoint-97<26){return codePoint-97}return base}function digitToBasic(digit,flag){return digit+22+75*(digit<26)-((flag!=0)<<5)}function adapt(delta,numPoints,firstTime){var k=0;delta=firstTime?floor(delta/damp):delta>>1;delta+=floor(delta/numPoints);for(;delta>baseMinusTMin*tMax>>1;k+=base){delta=floor(delta/baseMinusTMin)}return floor(k+(baseMinusTMin+1)*delta/(delta+skew))}function decode(input){var output=[],inputLength=input.length,out,i=0,n=initialN,bias=initialBias,basic,j,index,oldi,w,k,digit,t,baseMinusT;basic=input.lastIndexOf(delimiter);if(basic<0){basic=0}for(j=0;j<basic;++j){if(input.charCodeAt(j)>=128){error("not-basic")}output.push(input.charCodeAt(j))}for(index=basic>0?basic+1:0;index<inputLength;){for(oldi=i,w=1,k=base;;k+=base){if(index>=inputLength){error("invalid-input")}digit=basicToDigit(input.charCodeAt(index++));if(digit>=base||digit>floor((maxInt-i)/w)){error("overflow")}i+=digit*w;t=k<=bias?tMin:k>=bias+tMax?tMax:k-bias;if(digit<t){break}baseMinusT=base-t;if(w>floor(maxInt/baseMinusT)){error("overflow")}w*=baseMinusT}out=output.length+1;bias=adapt(i-oldi,out,oldi==0);if(floor(i/out)>maxInt-n){error("overflow")}n+=floor(i/out);i%=out;output.splice(i++,0,n)}return ucs2encode(output)}function encode(input){var n,delta,handledCPCount,basicLength,bias,j,m,q,k,t,currentValue,output=[],inputLength,handledCPCountPlusOne,baseMinusT,qMinusT;input=ucs2decode(input);inputLength=input.length;n=initialN;delta=0;bias=initialBias;for(j=0;j<inputLength;++j){currentValue=input[j];if(currentValue<128){output.push(stringFromCharCode(currentValue))}}handledCPCount=basicLength=output.length;if(basicLength){output.push(delimiter)}while(handledCPCount<inputLength){for(m=maxInt,j=0;j<inputLength;++j){currentValue=input[j];if(currentValue>=n&&currentValue<m){m=currentValue}}handledCPCountPlusOne=handledCPCount+1;if(m-n>floor((maxInt-delta)/handledCPCountPlusOne)){error("overflow")}delta+=(m-n)*handledCPCountPlusOne;n=m;for(j=0;j<inputLength;++j){currentValue=input[j];if(currentValue<n&&++delta>maxInt){error("overflow")}if(currentValue==n){for(q=delta,k=base;;k+=base){t=k<=bias?tMin:k>=bias+tMax?tMax:k-bias;if(q<t){break}qMinusT=q-t;baseMinusT=base-t;output.push(stringFromCharCode(digitToBasic(t+qMinusT%baseMinusT,0)));q=floor(qMinusT/baseMinusT)}output.push(stringFromCharCode(digitToBasic(q,0)));bias=adapt(delta,handledCPCountPlusOne,handledCPCount==basicLength);delta=0;++handledCPCount}}++delta;++n}return output.join("")}function toUnicode(domain){return mapDomain(domain,function(string){return regexPunycode.test(string)?decode(string.slice(4).toLowerCase()):string})}function toASCII(domain){return mapDomain(domain,function(string){return regexNonASCII.test(string)?"xn--"+encode(string):string})}punycode={version:"1.2.4",ucs2:{decode:ucs2decode,encode:ucs2encode},decode:decode,encode:encode,toASCII:toASCII,toUnicode:toUnicode};if(typeof define=="function"&&typeof define.amd=="object"&&define.amd){define("punycode",function(){return punycode})}else if(freeExports&&!freeExports.nodeType){if(freeModule){freeModule.exports=punycode}else{for(key in punycode){punycode.hasOwnProperty(key)&&(freeExports[key]=punycode[key])}}}else{root.punycode=punycode}})(this)}).call(this,typeof global!=="undefined"?global:typeof self!=="undefined"?self:typeof window!=="undefined"?window:{})},{}],15:[function(require,module,exports){"use strict";function hasOwnProperty(obj,prop){return Object.prototype.hasOwnProperty.call(obj,prop)}module.exports=function(qs,sep,eq,options){sep=sep||"&";eq=eq||"=";var obj={};if(typeof qs!=="string"||qs.length===0){return obj}var regexp=/\+/g;qs=qs.split(sep);var maxKeys=1e3;if(options&&typeof options.maxKeys==="number"){maxKeys=options.maxKeys}var len=qs.length;if(maxKeys>0&&len>maxKeys){len=maxKeys}for(var i=0;i<len;++i){var x=qs[i].replace(regexp,"%20"),idx=x.indexOf(eq),kstr,vstr,k,v;if(idx>=0){kstr=x.substr(0,idx);vstr=x.substr(idx+1)}else{kstr=x;vstr=""}k=decodeURIComponent(kstr);v=decodeURIComponent(vstr);if(!hasOwnProperty(obj,k)){obj[k]=v}else if(isArray(obj[k])){obj[k].push(v)}else{obj[k]=[obj[k],v]}}return obj};var isArray=Array.isArray||function(xs){return Object.prototype.toString.call(xs)==="[object Array]"}},{}],16:[function(require,module,exports){"use strict";var stringifyPrimitive=function(v){switch(typeof v){case"string":return v;case"boolean":return v?"true":"false";case"number":return isFinite(v)?v:"";default:return""}};module.exports=function(obj,sep,eq,name){sep=sep||"&";eq=eq||"=";if(obj===null){obj=undefined}if(typeof obj==="object"){return map(objectKeys(obj),function(k){var ks=encodeURIComponent(stringifyPrimitive(k))+eq;if(isArray(obj[k])){return map(obj[k],function(v){return ks+encodeURIComponent(stringifyPrimitive(v))}).join(sep)}else{return ks+encodeURIComponent(stringifyPrimitive(obj[k]))}}).join(sep)}if(!name)return"";return encodeURIComponent(stringifyPrimitive(name))+eq+encodeURIComponent(stringifyPrimitive(obj))};var isArray=Array.isArray||function(xs){return Object.prototype.toString.call(xs)==="[object Array]"};function map(xs,f){if(xs.map)return xs.map(f);var res=[];for(var i=0;i<xs.length;i++){res.push(f(xs[i],i))}return res}var objectKeys=Object.keys||function(obj){var res=[];for(var key in obj){if(Object.prototype.hasOwnProperty.call(obj,key))res.push(key)}return res}},{}],17:[function(require,module,exports){"use strict";exports.decode=exports.parse=require("./decode");exports.encode=exports.stringify=require("./encode")},{"./decode":15,"./encode":16}],18:[function(require,module,exports){module.exports=require("./lib/_stream_duplex.js")},{"./lib/_stream_duplex.js":19}],19:[function(require,module,exports){(function(process){module.exports=Duplex;var objectKeys=Object.keys||function(obj){var keys=[];for(var key in obj)keys.push(key);return keys};var util=require("core-util-is");util.inherits=require("inherits");var Readable=require("./_stream_readable");var Writable=require("./_stream_writable");util.inherits(Duplex,Readable);forEach(objectKeys(Writable.prototype),function(method){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);if(options&&options.readable===false)this.readable=false;if(options&&options.writable===false)this.writable=false;this.allowHalfOpen=true;if(options&&options.allowHalfOpen===false)this.allowHalfOpen=false;this.once("end",onend)}function onend(){if(this.allowHalfOpen||this._writableState.ended)return;process.nextTick(this.end.bind(this))}function forEach(xs,f){for(var i=0,l=xs.length;i<l;i++){f(xs[i],i)}}}).call(this,require("_process"))},{"./_stream_readable":21,"./_stream_writable":23,_process:13,"core-util-is":24,inherits:10}],20:[function(require,module,exports){module.exports=PassThrough;var Transform=require("./_stream_transform");var util=require("core-util-is");util.inherits=require("inherits");util.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":22,"core-util-is":24,inherits:10}],21:[function(require,module,exports){(function(process){module.exports=Readable;var isArray=require("isarray");var Buffer=require("buffer").Buffer;Readable.ReadableState=ReadableState;var EE=require("events").EventEmitter;if(!EE.listenerCount)EE.listenerCount=function(emitter,type){return emitter.listeners(type).length};var Stream=require("stream");var util=require("core-util-is");util.inherits=require("inherits");var StringDecoder;util.inherits(Readable,Stream);function ReadableState(options,stream){options=options||{};var hwm=options.highWaterMark;this.highWaterMark=hwm||hwm===0?hwm:16*1024;this.highWaterMark=~~this.highWaterMark;this.buffer=[];this.length=0;this.pipes=null;this.pipesCount=0;this.flowing=false;this.ended=false;this.endEmitted=false;this.reading=false;this.calledRead=false;this.sync=true;this.needReadable=false;this.emittedReadable=false;this.readableListening=false;this.objectMode=!!options.objectMode;this.defaultEncoding=options.defaultEncoding||"utf8";this.ranOut=false;this.awaitDrain=0;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){if(!(this instanceof Readable))return new Readable(options);this._readableState=new ReadableState(options,this);this.readable=true;Stream.call(this)}Readable.prototype.push=function(chunk,encoding){var state=this._readableState;if(typeof chunk==="string"&&!state.objectMode){encoding=encoding||state.defaultEncoding;if(encoding!==state.encoding){chunk=new Buffer(chunk,encoding);encoding=""}}return readableAddChunk(this,state,chunk,encoding,false)};Readable.prototype.unshift=function(chunk){var state=this._readableState;return readableAddChunk(this,state,chunk,"",true)};function readableAddChunk(stream,state,chunk,encoding,addToFront){var er=chunkInvalid(state,chunk);if(er){stream.emit("error",er)}else if(chunk===null||chunk===undefined){state.reading=false;if(!state.ended)onEofChunk(stream,state)}else if(state.objectMode||chunk&&chunk.length>0){if(state.ended&&!addToFront){var e=new Error("stream.push() after EOF");stream.emit("error",e)}else if(state.endEmitted&&addToFront){var e=new Error("stream.unshift() after end event");stream.emit("error",e)}else{if(state.decoder&&!addToFront&&!encoding)chunk=state.decoder.write(chunk);state.length+=state.objectMode?1:chunk.length;if(addToFront){state.buffer.unshift(chunk)}else{state.reading=false;state.buffer.push(chunk)}if(state.needReadable)emitReadable(stream);maybeReadMore(stream,state)}}else if(!addToFront){state.reading=false}return needMoreData(state)}function needMoreData(state){return!state.ended&&(state.needReadable||state.length<state.highWaterMark||state.length===0)}Readable.prototype.setEncoding=function(enc){if(!StringDecoder)StringDecoder=require("string_decoder/").StringDecoder;this._readableState.decoder=new StringDecoder(enc);this._readableState.encoding=enc};var MAX_HWM=8388608;function roundUpToNextPowerOf2(n){if(n>=MAX_HWM){n=MAX_HWM}else{n--;for(var p=1;p<32;p<<=1)n|=n>>p;n++}return n}function howMuchToRead(n,state){if(state.length===0&&state.ended)return 0;if(state.objectMode)return n===0?0:1;if(n===null||isNaN(n)){if(state.flowing&&state.buffer.length)return state.buffer[0].length;else return state.length}if(n<=0)return 0;if(n>state.highWaterMark)state.highWaterMark=roundUpToNextPowerOf2(n);if(n>state.length){if(!state.ended){state.needReadable=true;return 0}else return state.length}return n}Readable.prototype.read=function(n){var state=this._readableState;state.calledRead=true;var nOrig=n;var ret;if(typeof n!=="number"||n>0)state.emittedReadable=false;if(n===0&&state.needReadable&&(state.length>=state.highWaterMark||state.ended)){emitReadable(this);return null}n=howMuchToRead(n,state);if(n===0&&state.ended){ret=null;if(state.length>0&&state.decoder){ret=fromList(n,state);state.length-=ret.length}if(state.length===0)endReadable(this);
return ret}var doRead=state.needReadable;if(state.length-n<=state.highWaterMark)doRead=true;if(state.ended||state.reading)doRead=false;if(doRead){state.reading=true;state.sync=true;if(state.length===0)state.needReadable=true;this._read(state.highWaterMark);state.sync=false}if(doRead&&!state.reading)n=howMuchToRead(nOrig,state);if(n>0)ret=fromList(n,state);else ret=null;if(ret===null){state.needReadable=true;n=0}state.length-=n;if(state.length===0&&!state.ended)state.needReadable=true;if(state.ended&&!state.endEmitted&&state.length===0)endReadable(this);return ret};function chunkInvalid(state,chunk){var er=null;if(!Buffer.isBuffer(chunk)&&"string"!==typeof chunk&&chunk!==null&&chunk!==undefined&&!state.objectMode){er=new TypeError("Invalid non-string/buffer chunk")}return er}function onEofChunk(stream,state){if(state.decoder&&!state.ended){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.length>0)emitReadable(stream);else endReadable(stream)}function emitReadable(stream){var state=stream._readableState;state.needReadable=false;if(state.emittedReadable)return;state.emittedReadable=true;if(state.sync)process.nextTick(function(){emitReadable_(stream)});else emitReadable_(stream)}function emitReadable_(stream){stream.emit("readable")}function maybeReadMore(stream,state){if(!state.readingMore){state.readingMore=true;process.nextTick(function(){maybeReadMore_(stream,state)})}}function maybeReadMore_(stream,state){var len=state.length;while(!state.reading&&!state.flowing&&!state.ended&&state.length<state.highWaterMark){stream.read(0);if(len===state.length)break;else len=state.length}state.readingMore=false}Readable.prototype._read=function(n){this.emit("error",new Error("not implemented"))};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;var doEnd=(!pipeOpts||pipeOpts.end!==false)&&dest!==process.stdout&&dest!==process.stderr;var endFn=doEnd?onend:cleanup;if(state.endEmitted)process.nextTick(endFn);else src.once("end",endFn);dest.on("unpipe",onunpipe);function onunpipe(readable){if(readable!==src)return;cleanup()}function onend(){dest.end()}var ondrain=pipeOnDrain(src);dest.on("drain",ondrain);function cleanup(){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",cleanup);if(!dest._writableState||dest._writableState.needDrain)ondrain()}function onerror(er){unpipe();dest.removeListener("error",onerror);if(EE.listenerCount(dest,"error")===0)dest.emit("error",er)}if(!dest._events||!dest._events.error)dest.on("error",onerror);else if(isArray(dest._events.error))dest._events.error.unshift(onerror);else dest._events.error=[onerror,dest._events.error];function onclose(){dest.removeListener("finish",onfinish);unpipe()}dest.once("close",onclose);function onfinish(){dest.removeListener("close",onclose);unpipe()}dest.once("finish",onfinish);function unpipe(){src.unpipe(dest)}dest.emit("pipe",src);if(!state.flowing){this.on("readable",pipeOnReadable);state.flowing=true;process.nextTick(function(){flow(src)})}return dest};function pipeOnDrain(src){return function(){var dest=this;var state=src._readableState;state.awaitDrain--;if(state.awaitDrain===0)flow(src)}}function flow(src){var state=src._readableState;var chunk;state.awaitDrain=0;function write(dest,i,list){var written=dest.write(chunk);if(false===written){state.awaitDrain++}}while(state.pipesCount&&null!==(chunk=src.read())){if(state.pipesCount===1)write(state.pipes,0,null);else forEach(state.pipes,write);src.emit("data",chunk);if(state.awaitDrain>0)return}if(state.pipesCount===0){state.flowing=false;if(EE.listenerCount(src,"data")>0)emitDataEvents(src);return}state.ranOut=true}function pipeOnReadable(){if(this._readableState.ranOut){this._readableState.ranOut=false;flow(this)}}Readable.prototype.unpipe=function(dest){var state=this._readableState;if(state.pipesCount===0)return this;if(state.pipesCount===1){if(dest&&dest!==state.pipes)return this;if(!dest)dest=state.pipes;state.pipes=null;state.pipesCount=0;this.removeListener("readable",pipeOnReadable);state.flowing=false;if(dest)dest.emit("unpipe",this);return this}if(!dest){var dests=state.pipes;var len=state.pipesCount;state.pipes=null;state.pipesCount=0;this.removeListener("readable",pipeOnReadable);state.flowing=false;for(var i=0;i<len;i++)dests[i].emit("unpipe",this);return this}var i=indexOf(state.pipes,dest);if(i===-1)return this;state.pipes.splice(i,1);state.pipesCount-=1;if(state.pipesCount===1)state.pipes=state.pipes[0];dest.emit("unpipe",this);return this};Readable.prototype.on=function(ev,fn){var res=Stream.prototype.on.call(this,ev,fn);if(ev==="data"&&!this._readableState.flowing)emitDataEvents(this);if(ev==="readable"&&this.readable){var state=this._readableState;if(!state.readableListening){state.readableListening=true;state.emittedReadable=false;state.needReadable=true;if(!state.reading){this.read(0)}else if(state.length){emitReadable(this,state)}}}return res};Readable.prototype.addListener=Readable.prototype.on;Readable.prototype.resume=function(){emitDataEvents(this);this.read(0);this.emit("resume")};Readable.prototype.pause=function(){emitDataEvents(this,true);this.emit("pause")};function emitDataEvents(stream,startPaused){var state=stream._readableState;if(state.flowing){throw new Error("Cannot switch to old mode now.")}var paused=startPaused||false;var readable=false;stream.readable=true;stream.pipe=Stream.prototype.pipe;stream.on=stream.addListener=Stream.prototype.on;stream.on("readable",function(){readable=true;var c;while(!paused&&null!==(c=stream.read()))stream.emit("data",c);if(c===null){readable=false;stream._readableState.needReadable=true}});stream.pause=function(){paused=true;this.emit("pause")};stream.resume=function(){paused=false;if(readable)process.nextTick(function(){stream.emit("readable")});else this.read(0);this.emit("resume")};stream.emit("readable")}Readable.prototype.wrap=function(stream){var state=this._readableState;var paused=false;var self=this;stream.on("end",function(){if(state.decoder&&!state.ended){var chunk=state.decoder.end();if(chunk&&chunk.length)self.push(chunk)}self.push(null)});stream.on("data",function(chunk){if(state.decoder)chunk=state.decoder.write(chunk);if(state.objectMode&&(chunk===null||chunk===undefined))return;else if(!state.objectMode&&(!chunk||!chunk.length))return;var ret=self.push(chunk);if(!ret){paused=true;stream.pause()}});for(var i in stream){if(typeof stream[i]==="function"&&typeof this[i]==="undefined"){this[i]=function(method){return function(){return stream[method].apply(stream,arguments)}}(i)}}var events=["error","close","destroy","pause","resume"];forEach(events,function(ev){stream.on(ev,self.emit.bind(self,ev))});self._read=function(n){if(paused){paused=false;stream.resume()}};return self};Readable._fromList=fromList;function fromList(n,state){var list=state.buffer;var length=state.length;var stringMode=!!state.decoder;var objectMode=!!state.objectMode;var ret;if(list.length===0)return null;if(length===0)ret=null;else if(objectMode)ret=list.shift();else if(!n||n>=length){if(stringMode)ret=list.join("");else ret=Buffer.concat(list,length);list.length=0}else{if(n<list[0].length){var buf=list[0];ret=buf.slice(0,n);list[0]=buf.slice(n)}else if(n===list[0].length){ret=list.shift()}else{if(stringMode)ret="";else ret=new Buffer(n);var c=0;for(var i=0,l=list.length;i<l&&c<n;i++){var buf=list[0];var cpy=Math.min(n-c,buf.length);if(stringMode)ret+=buf.slice(0,cpy);else buf.copy(ret,c,0,cpy);if(cpy<buf.length)list[0]=buf.slice(cpy);else list.shift();c+=cpy}}}return ret}function endReadable(stream){var state=stream._readableState;if(state.length>0)throw new Error("endReadable called on non-empty stream");if(!state.endEmitted&&state.calledRead){state.ended=true;process.nextTick(function(){if(!state.endEmitted&&state.length===0){state.endEmitted=true;stream.readable=false;stream.emit("end")}})}}function forEach(xs,f){for(var i=0,l=xs.length;i<l;i++){f(xs[i],i)}}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"))},{_process:13,buffer:6,"core-util-is":24,events:9,inherits:10,isarray:11,stream:30,"string_decoder/":25}],22:[function(require,module,exports){module.exports=Transform;var Duplex=require("./_stream_duplex");var util=require("core-util-is");util.inherits=require("inherits");util.inherits(Transform,Duplex);function TransformState(options,stream){this.afterTransform=function(er,data){return afterTransform(stream,er,data)};this.needTransform=false;this.transforming=false;this.writecb=null;this.writechunk=null}function afterTransform(stream,er,data){var ts=stream._transformState;ts.transforming=false;var cb=ts.writecb;if(!cb)return stream.emit("error",new Error("no writecb in Transform class"));ts.writechunk=null;ts.writecb=null;if(data!==null&&data!==undefined)stream.push(data);if(cb)cb(er);var rs=stream._readableState;rs.reading=false;if(rs.needReadable||rs.length<rs.highWaterMark){stream._read(rs.highWaterMark)}}function Transform(options){if(!(this instanceof Transform))return new Transform(options);Duplex.call(this,options);var ts=this._transformState=new TransformState(options,this);var stream=this;this._readableState.needReadable=true;this._readableState.sync=false;this.once("finish",function(){if("function"===typeof this._flush)this._flush(function(er){done(stream,er)});else done(stream)})}Transform.prototype.push=function(chunk,encoding){this._transformState.needTransform=false;return Duplex.prototype.push.call(this,chunk,encoding)};Transform.prototype._transform=function(chunk,encoding,cb){throw new Error("not implemented")};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)}};Transform.prototype._read=function(n){var ts=this._transformState;if(ts.writechunk!==null&&ts.writecb&&!ts.transforming){ts.transforming=true;this._transform(ts.writechunk,ts.writeencoding,ts.afterTransform)}else{ts.needTransform=true}};function done(stream,er){if(er)return stream.emit("error",er);var ws=stream._writableState;var rs=stream._readableState;var ts=stream._transformState;if(ws.length)throw new Error("calling transform done when ws.length != 0");if(ts.transforming)throw new Error("calling transform done when still transforming");return stream.push(null)}},{"./_stream_duplex":19,"core-util-is":24,inherits:10}],23:[function(require,module,exports){(function(process){module.exports=Writable;var Buffer=require("buffer").Buffer;Writable.WritableState=WritableState;var util=require("core-util-is");util.inherits=require("inherits");var Stream=require("stream");util.inherits(Writable,Stream);function WriteReq(chunk,encoding,cb){this.chunk=chunk;this.encoding=encoding;this.callback=cb}function WritableState(options,stream){options=options||{};var hwm=options.highWaterMark;this.highWaterMark=hwm||hwm===0?hwm:16*1024;this.objectMode=!!options.objectMode;this.highWaterMark=~~this.highWaterMark;this.needDrain=false;this.ending=false;this.ended=false;this.finished=false;var noDecode=options.decodeStrings===false;this.decodeStrings=!noDecode;this.defaultEncoding=options.defaultEncoding||"utf8";this.length=0;this.writing=false;this.sync=true;this.bufferProcessing=false;this.onwrite=function(er){onwrite(stream,er)};this.writecb=null;this.writelen=0;this.buffer=[];this.errorEmitted=false}function Writable(options){var Duplex=require("./_stream_duplex");if(!(this instanceof Writable)&&!(this instanceof Duplex))return new Writable(options);this._writableState=new WritableState(options,this);this.writable=true;Stream.call(this)}Writable.prototype.pipe=function(){this.emit("error",new Error("Cannot pipe. Not readable."))};function writeAfterEnd(stream,state,cb){var er=new Error("write after end");stream.emit("error",er);process.nextTick(function(){cb(er)})}function validChunk(stream,state,chunk,cb){var valid=true;if(!Buffer.isBuffer(chunk)&&"string"!==typeof chunk&&chunk!==null&&chunk!==undefined&&!state.objectMode){var er=new TypeError("Invalid non-string/buffer chunk");stream.emit("error",er);process.nextTick(function(){cb(er)});valid=false}return valid}Writable.prototype.write=function(chunk,encoding,cb){var state=this._writableState;var ret=false;if(typeof encoding==="function"){cb=encoding;encoding=null}if(Buffer.isBuffer(chunk))encoding="buffer";else if(!encoding)encoding=state.defaultEncoding;if(typeof cb!=="function")cb=function(){};if(state.ended)writeAfterEnd(this,state,cb);else if(validChunk(this,state,chunk,cb))ret=writeOrBuffer(this,state,chunk,encoding,cb);return ret};function decodeChunk(state,chunk,encoding){if(!state.objectMode&&state.decodeStrings!==false&&typeof chunk==="string"){chunk=new Buffer(chunk,encoding)}return chunk}function writeOrBuffer(stream,state,chunk,encoding,cb){chunk=decodeChunk(state,chunk,encoding);if(Buffer.isBuffer(chunk))encoding="buffer";var len=state.objectMode?1:chunk.length;state.length+=len;var ret=state.length<state.highWaterMark;if(!ret)state.needDrain=true;if(state.writing)state.buffer.push(new WriteReq(chunk,encoding,cb));else doWrite(stream,state,len,chunk,encoding,cb);return ret}function doWrite(stream,state,len,chunk,encoding,cb){state.writelen=len;state.writecb=cb;state.writing=true;state.sync=true;stream._write(chunk,encoding,state.onwrite);state.sync=false}function onwriteError(stream,state,sync,er,cb){if(sync)process.nextTick(function(){cb(er)});else cb(er);stream._writableState.errorEmitted=true;stream.emit("error",er)}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;onwriteStateUpdate(state);if(er)onwriteError(stream,state,sync,er,cb);else{var finished=needFinish(stream,state);if(!finished&&!state.bufferProcessing&&state.buffer.length)clearBuffer(stream,state);if(sync){process.nextTick(function(){afterWrite(stream,state,finished,cb)})}else{afterWrite(stream,state,finished,cb)}}}function afterWrite(stream,state,finished,cb){if(!finished)onwriteDrain(stream,state);cb();if(finished)finishMaybe(stream,state)}function onwriteDrain(stream,state){if(state.length===0&&state.needDrain){state.needDrain=false;stream.emit("drain")}}function clearBuffer(stream,state){state.bufferProcessing=true;for(var c=0;c<state.buffer.length;c++){var entry=state.buffer[c];var chunk=entry.chunk;var encoding=entry.encoding;var cb=entry.callback;var len=state.objectMode?1:chunk.length;doWrite(stream,state,len,chunk,encoding,cb);if(state.writing){c++;break}}state.bufferProcessing=false;if(c<state.buffer.length)state.buffer=state.buffer.slice(c);else state.buffer.length=0}Writable.prototype._write=function(chunk,encoding,cb){cb(new Error("not implemented"))};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(typeof chunk!=="undefined"&&chunk!==null)this.write(chunk,encoding);if(!state.ending&&!state.finished)endWritable(this,state,cb)};function needFinish(stream,state){return state.ending&&state.length===0&&!state.finished&&!state.writing}function finishMaybe(stream,state){var need=needFinish(stream,state);if(need){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}}).call(this,require("_process"))},{"./_stream_duplex":19,_process:13,buffer:6,"core-util-is":24,inherits:10,stream:30}],24:[function(require,module,exports){(function(Buffer){function isArray(ar){return Array.isArray(ar)}exports.isArray=isArray;function isBoolean(arg){return typeof arg==="boolean"}exports.isBoolean=isBoolean;function isNull(arg){return arg===null}exports.isNull=isNull;function isNullOrUndefined(arg){return arg==null}exports.isNullOrUndefined=isNullOrUndefined;function isNumber(arg){return typeof arg==="number"}exports.isNumber=isNumber;function isString(arg){return typeof arg==="string"}exports.isString=isString;function isSymbol(arg){return typeof arg==="symbol"}exports.isSymbol=isSymbol;function isUndefined(arg){return arg===void 0}exports.isUndefined=isUndefined;function isRegExp(re){return isObject(re)&&objectToString(re)==="[object RegExp]"}exports.isRegExp=isRegExp;function isObject(arg){return typeof arg==="object"&&arg!==null}exports.isObject=isObject;function isDate(d){return isObject(d)&&objectToString(d)==="[object Date]"}exports.isDate=isDate;function isError(e){return isObject(e)&&(objectToString(e)==="[object Error]"||e instanceof Error)}exports.isError=isError;function isFunction(arg){return typeof arg==="function"}exports.isFunction=isFunction;function isPrimitive(arg){return arg===null||typeof arg==="boolean"||typeof arg==="number"||typeof arg==="string"||typeof arg==="symbol"||typeof arg==="undefined"}exports.isPrimitive=isPrimitive;function isBuffer(arg){return Buffer.isBuffer(arg)}exports.isBuffer=isBuffer;function objectToString(o){return Object.prototype.toString.call(o)}}).call(this,require("buffer").Buffer)},{buffer:6}],25:[function(require,module,exports){var Buffer=require("buffer").Buffer;var isBufferEncoding=Buffer.isEncoding||function(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 assertEncoding(encoding){if(encoding&&!isBufferEncoding(encoding)){throw new Error("Unknown encoding: "+encoding)}}var StringDecoder=exports.StringDecoder=function(encoding){this.encoding=(encoding||"utf8").toLowerCase().replace(/[-_]/,"");assertEncoding(encoding);switch(this.encoding){case"utf8":this.surrogateSize=3;break;case"ucs2":case"utf16le":this.surrogateSize=2;this.detectIncompleteChar=utf16DetectIncompleteChar;break;case"base64":this.surrogateSize=3;this.detectIncompleteChar=base64DetectIncompleteChar;break;default:this.write=passThroughWrite;return}this.charBuffer=new Buffer(6);this.charReceived=0;this.charLength=0};StringDecoder.prototype.write=function(buffer){var charStr="";var offset=0;while(this.charLength){var i=buffer.length>=this.charLength-this.charReceived?this.charLength-this.charReceived:buffer.length;buffer.copy(this.charBuffer,this.charReceived,offset,i);this.charReceived+=i-offset;offset=i;if(this.charReceived<this.charLength){return""}charStr=this.charBuffer.slice(0,this.charLength).toString(this.encoding);var charCode=charStr.charCodeAt(charStr.length-1);if(charCode>=55296&&charCode<=56319){this.charLength+=this.surrogateSize;charStr="";continue}this.charReceived=this.charLength=0;if(i==buffer.length)return charStr;buffer=buffer.slice(i,buffer.length);break}var lenIncomplete=this.detectIncompleteChar(buffer);var end=buffer.length;if(this.charLength){buffer.copy(this.charBuffer,0,buffer.length-lenIncomplete,end);this.charReceived=lenIncomplete;end-=lenIncomplete}charStr+=buffer.toString(this.encoding,0,end);var end=charStr.length-1;var charCode=charStr.charCodeAt(end);if(charCode>=55296&&charCode<=56319){var size=this.surrogateSize;this.charLength+=size;this.charReceived+=size;this.charBuffer.copy(this.charBuffer,size,0,size);this.charBuffer.write(charStr.charAt(charStr.length-1),this.encoding);return charStr.substring(0,end)}return charStr};StringDecoder.prototype.detectIncompleteChar=function(buffer){var i=buffer.length>=3?3:buffer.length;for(;i>0;i--){var c=buffer[buffer.length-i];if(i==1&&c>>5==6){this.charLength=2;break}if(i<=2&&c>>4==14){this.charLength=3;break}if(i<=3&&c>>3==30){this.charLength=4;break}}return i};StringDecoder.prototype.end=function(buffer){var res="";if(buffer&&buffer.length)res=this.write(buffer);if(this.charReceived){var cr=this.charReceived;var buf=this.charBuffer;var enc=this.encoding;res+=buf.slice(0,cr).toString(enc)}return res};function passThroughWrite(buffer){return buffer.toString(this.encoding)}function utf16DetectIncompleteChar(buffer){var incomplete=this.charReceived=buffer.length%2;this.charLength=incomplete?2:0;return incomplete}function base64DetectIncompleteChar(buffer){var incomplete=this.charReceived=buffer.length%3;this.charLength=incomplete?3:0;return incomplete}},{buffer:6}],26:[function(require,module,exports){module.exports=require("./lib/_stream_passthrough.js")},{"./lib/_stream_passthrough.js":20}],27:[function(require,module,exports){exports=module.exports=require("./lib/_stream_readable.js");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")},{"./lib/_stream_duplex.js":19,"./lib/_stream_passthrough.js":20,"./lib/_stream_readable.js":21,"./lib/_stream_transform.js":22,"./lib/_stream_writable.js":23}],28:[function(require,module,exports){module.exports=require("./lib/_stream_transform.js")},{"./lib/_stream_transform.js":22}],29:[function(require,module,exports){module.exports=require("./lib/_stream_writable.js")},{"./lib/_stream_writable.js":23}],30:[function(require,module,exports){module.exports=Stream;var EE=require("events").EventEmitter;var inherits=require("inherits");inherits(Stream,EE);Stream.Readable=require("readable-stream/readable.js");Stream.Writable=require("readable-stream/writable.js");Stream.Duplex=require("readable-stream/duplex.js");Stream.Transform=require("readable-stream/transform.js");Stream.PassThrough=require("readable-stream/passthrough.js");Stream.Stream=Stream;function Stream(){EE.call(this)}Stream.prototype.pipe=function(dest,options){var source=this;function ondata(chunk){if(dest.writable){if(false===dest.write(chunk)&&source.pause){source.pause()}}}source.on("data",ondata);function ondrain(){if(source.readable&&source.resume){source.resume()}}dest.on("drain",ondrain);if(!dest._isStdio&&(!options||options.end!==false)){source.on("end",onend);source.on("close",onclose)}var didOnEnd=false;function onend(){if(didOnEnd)return;didOnEnd=true;dest.end()}function onclose(){if(didOnEnd)return;didOnEnd=true;if(typeof dest.destroy==="function")dest.destroy()}function onerror(er){cleanup();if(EE.listenerCount(this,"error")===0){throw er}}source.on("error",onerror);dest.on("error",onerror);function cleanup(){source.removeListener("data",ondata);dest.removeListener("drain",ondrain);source.removeListener("end",onend);source.removeListener("close",onclose);source.removeListener("error",onerror);dest.removeListener("error",onerror);source.removeListener("end",cleanup);source.removeListener("close",cleanup);dest.removeListener("close",cleanup)}source.on("end",cleanup);source.on("close",cleanup);dest.on("close",cleanup);dest.emit("pipe",source);return dest}},{events:9,inherits:10,"readable-stream/duplex.js":18,"readable-stream/passthrough.js":26,"readable-stream/readable.js":27,"readable-stream/transform.js":28,"readable-stream/writable.js":29}],31:[function(require,module,exports){var punycode=require("punycode");exports.parse=urlParse;exports.resolve=urlResolve;exports.resolveObject=urlResolveObject;exports.format=urlFormat;exports.Url=Url;function Url(){this.protocol=null;this.slashes=null;this.auth=null;this.host=null;this.port=null;this.hostname=null;this.hash=null;this.search=null;this.query=null;this.pathname=null;this.path=null;this.href=null}var protocolPattern=/^([a-z0-9.+-]+:)/i,portPattern=/:[0-9]*$/,delims=["<",">",'"',"`"," ","\r","\n","	"],unwise=["{","}","|","\\","^","`"].concat(delims),autoEscape=["'"].concat(unwise),nonHostChars=["%","/","?",";","#"].concat(autoEscape),hostEndingChars=["/","?","#"],hostnameMaxLen=255,hostnamePartPattern=/^[a-z0-9A-Z_-]{0,63}$/,hostnamePartStart=/^([a-z0-9A-Z_-]{0,63})(.*)$/,unsafeProtocol={javascript:true,"javascript:":true},hostlessProtocol={javascript:true,"javascript:":true},slashedProtocol={http:true,https:true,ftp:true,gopher:true,file:true,"http:":true,"https:":true,"ftp:":true,"gopher:":true,"file:":true},querystring=require("querystring");function urlParse(url,parseQueryString,slashesDenoteHost){if(url&&isObject(url)&&url instanceof Url)return url;var u=new Url;u.parse(url,parseQueryString,slashesDenoteHost);return u}Url.prototype.parse=function(url,parseQueryString,slashesDenoteHost){if(!isString(url)){throw new TypeError("Parameter 'url' must be a string, not "+typeof url)}var rest=url;rest=rest.trim();var proto=protocolPattern.exec(rest);if(proto){proto=proto[0];var lowerProto=proto.toLowerCase();this.protocol=lowerProto;rest=rest.substr(proto.length)}if(slashesDenoteHost||proto||rest.match(/^\/\/[^@\/]+@[^@\/]+/)){var slashes=rest.substr(0,2)==="//";if(slashes&&!(proto&&hostlessProtocol[proto])){rest=rest.substr(2);this.slashes=true}}if(!hostlessProtocol[proto]&&(slashes||proto&&!slashedProtocol[proto])){var hostEnd=-1;for(var i=0;i<hostEndingChars.length;i++){var hec=rest.indexOf(hostEndingChars[i]);if(hec!==-1&&(hostEnd===-1||hec<hostEnd))hostEnd=hec}var auth,atSign;if(hostEnd===-1){atSign=rest.lastIndexOf("@")}else{atSign=rest.lastIndexOf("@",hostEnd)}if(atSign!==-1){auth=rest.slice(0,atSign);rest=rest.slice(atSign+1);this.auth=decodeURIComponent(auth)}hostEnd=-1;for(var i=0;i<nonHostChars.length;i++){var hec=rest.indexOf(nonHostChars[i]);if(hec!==-1&&(hostEnd===-1||hec<hostEnd))hostEnd=hec}if(hostEnd===-1)hostEnd=rest.length;this.host=rest.slice(0,hostEnd);rest=rest.slice(hostEnd);this.parseHost();this.hostname=this.hostname||"";var ipv6Hostname=this.hostname[0]==="["&&this.hostname[this.hostname.length-1]==="]";if(!ipv6Hostname){var hostparts=this.hostname.split(/\./);for(var i=0,l=hostparts.length;i<l;i++){var part=hostparts[i];if(!part)continue;if(!part.match(hostnamePartPattern)){var newpart="";for(var j=0,k=part.length;j<k;j++){if(part.charCodeAt(j)>127){newpart+="x"}else{newpart+=part[j]}}if(!newpart.match(hostnamePartPattern)){var validParts=hostparts.slice(0,i);var notHost=hostparts.slice(i+1);var bit=part.match(hostnamePartStart);if(bit){validParts.push(bit[1]);notHost.unshift(bit[2])}if(notHost.length){rest="/"+notHost.join(".")+rest}this.hostname=validParts.join(".");break}}}}if(this.hostname.length>hostnameMaxLen){this.hostname=""}else{this.hostname=this.hostname.toLowerCase()}if(!ipv6Hostname){var domainArray=this.hostname.split(".");var newOut=[];for(var i=0;i<domainArray.length;++i){var s=domainArray[i];newOut.push(s.match(/[^A-Za-z0-9_-]/)?"xn--"+punycode.encode(s):s)}this.hostname=newOut.join(".")}var p=this.port?":"+this.port:"";var h=this.hostname||"";this.host=h+p;this.href+=this.host;if(ipv6Hostname){this.hostname=this.hostname.substr(1,this.hostname.length-2);if(rest[0]!=="/"){rest="/"+rest}}}if(!unsafeProtocol[lowerProto]){for(var i=0,l=autoEscape.length;i<l;i++){var ae=autoEscape[i];var esc=encodeURIComponent(ae);if(esc===ae){esc=escape(ae)}rest=rest.split(ae).join(esc)}}var hash=rest.indexOf("#");if(hash!==-1){this.hash=rest.substr(hash);rest=rest.slice(0,hash)}var qm=rest.indexOf("?");if(qm!==-1){this.search=rest.substr(qm);this.query=rest.substr(qm+1);if(parseQueryString){this.query=querystring.parse(this.query)}rest=rest.slice(0,qm)}else if(parseQueryString){this.search="";this.query={}}if(rest)this.pathname=rest;if(slashedProtocol[lowerProto]&&this.hostname&&!this.pathname){this.pathname="/"}if(this.pathname||this.search){var p=this.pathname||"";var s=this.search||"";this.path=p+s}this.href=this.format();return this};function urlFormat(obj){if(isString(obj))obj=urlParse(obj);if(!(obj instanceof Url))return Url.prototype.format.call(obj);return obj.format()}Url.prototype.format=function(){var auth=this.auth||"";if(auth){auth=encodeURIComponent(auth);auth=auth.replace(/%3A/i,":");auth+="@"}var protocol=this.protocol||"",pathname=this.pathname||"",hash=this.hash||"",host=false,query="";if(this.host){host=auth+this.host}else if(this.hostname){host=auth+(this.hostname.indexOf(":")===-1?this.hostname:"["+this.hostname+"]");if(this.port){host+=":"+this.port}}if(this.query&&isObject(this.query)&&Object.keys(this.query).length){query=querystring.stringify(this.query)}var search=this.search||query&&"?"+query||"";if(protocol&&protocol.substr(-1)!==":")protocol+=":";if(this.slashes||(!protocol||slashedProtocol[protocol])&&host!==false){host="//"+(host||"");if(pathname&&pathname.charAt(0)!=="/")pathname="/"+pathname}else if(!host){host=""}if(hash&&hash.charAt(0)!=="#")hash="#"+hash;if(search&&search.charAt(0)!=="?")search="?"+search;pathname=pathname.replace(/[?#]/g,function(match){return encodeURIComponent(match)});search=search.replace("#","%23");return protocol+host+pathname+search+hash};function urlResolve(source,relative){return urlParse(source,false,true).resolve(relative)}Url.prototype.resolve=function(relative){return this.resolveObject(urlParse(relative,false,true)).format()};function urlResolveObject(source,relative){if(!source)return relative;return urlParse(source,false,true).resolveObject(relative)}Url.prototype.resolveObject=function(relative){if(isString(relative)){var rel=new Url;rel.parse(relative,false,true);relative=rel}var result=new Url;Object.keys(this).forEach(function(k){result[k]=this[k]},this);result.hash=relative.hash;if(relative.href===""){result.href=result.format();return result}if(relative.slashes&&!relative.protocol){Object.keys(relative).forEach(function(k){if(k!=="protocol")result[k]=relative[k]});if(slashedProtocol[result.protocol]&&result.hostname&&!result.pathname){result.path=result.pathname="/"}result.href=result.format();return result}if(relative.protocol&&relative.protocol!==result.protocol){if(!slashedProtocol[relative.protocol]){Object.keys(relative).forEach(function(k){result[k]=relative[k]});result.href=result.format();return result}result.protocol=relative.protocol;if(!relative.host&&!hostlessProtocol[relative.protocol]){var relPath=(relative.pathname||"").split("/");while(relPath.length&&!(relative.host=relPath.shift()));if(!relative.host)relative.host="";if(!relative.hostname)relative.hostname="";if(relPath[0]!=="")relPath.unshift("");if(relPath.length<2)relPath.unshift("");result.pathname=relPath.join("/")}else{result.pathname=relative.pathname}result.search=relative.search;result.query=relative.query;result.host=relative.host||"";result.auth=relative.auth;result.hostname=relative.hostname||relative.host;result.port=relative.port;if(result.pathname||result.search){var p=result.pathname||"";var s=result.search||"";result.path=p+s}result.slashes=result.slashes||relative.slashes;result.href=result.format();return result}var isSourceAbs=result.pathname&&result.pathname.charAt(0)==="/",isRelAbs=relative.host||relative.pathname&&relative.pathname.charAt(0)==="/",mustEndAbs=isRelAbs||isSourceAbs||result.host&&relative.pathname,removeAllDots=mustEndAbs,srcPath=result.pathname&&result.pathname.split("/")||[],relPath=relative.pathname&&relative.pathname.split("/")||[],psychotic=result.protocol&&!slashedProtocol[result.protocol];if(psychotic){result.hostname="";result.port=null;if(result.host){if(srcPath[0]==="")srcPath[0]=result.host;else srcPath.unshift(result.host)}result.host="";if(relative.protocol){relative.hostname=null;relative.port=null;if(relative.host){if(relPath[0]==="")relPath[0]=relative.host;else relPath.unshift(relative.host)}relative.host=null}mustEndAbs=mustEndAbs&&(relPath[0]===""||srcPath[0]==="")
}if(isRelAbs){result.host=relative.host||relative.host===""?relative.host:result.host;result.hostname=relative.hostname||relative.hostname===""?relative.hostname:result.hostname;result.search=relative.search;result.query=relative.query;srcPath=relPath}else if(relPath.length){if(!srcPath)srcPath=[];srcPath.pop();srcPath=srcPath.concat(relPath);result.search=relative.search;result.query=relative.query}else if(!isNullOrUndefined(relative.search)){if(psychotic){result.hostname=result.host=srcPath.shift();var authInHost=result.host&&result.host.indexOf("@")>0?result.host.split("@"):false;if(authInHost){result.auth=authInHost.shift();result.host=result.hostname=authInHost.shift()}}result.search=relative.search;result.query=relative.query;if(!isNull(result.pathname)||!isNull(result.search)){result.path=(result.pathname?result.pathname:"")+(result.search?result.search:"")}result.href=result.format();return result}if(!srcPath.length){result.pathname=null;if(result.search){result.path="/"+result.search}else{result.path=null}result.href=result.format();return result}var last=srcPath.slice(-1)[0];var hasTrailingSlash=(result.host||relative.host)&&(last==="."||last==="..")||last==="";var up=0;for(var i=srcPath.length;i>=0;i--){last=srcPath[i];if(last=="."){srcPath.splice(i,1)}else if(last===".."){srcPath.splice(i,1);up++}else if(up){srcPath.splice(i,1);up--}}if(!mustEndAbs&&!removeAllDots){for(;up--;up){srcPath.unshift("..")}}if(mustEndAbs&&srcPath[0]!==""&&(!srcPath[0]||srcPath[0].charAt(0)!=="/")){srcPath.unshift("")}if(hasTrailingSlash&&srcPath.join("/").substr(-1)!=="/"){srcPath.push("")}var isAbsolute=srcPath[0]===""||srcPath[0]&&srcPath[0].charAt(0)==="/";if(psychotic){result.hostname=result.host=isAbsolute?"":srcPath.length?srcPath.shift():"";var authInHost=result.host&&result.host.indexOf("@")>0?result.host.split("@"):false;if(authInHost){result.auth=authInHost.shift();result.host=result.hostname=authInHost.shift()}}mustEndAbs=mustEndAbs||result.host&&srcPath.length;if(mustEndAbs&&!isAbsolute){srcPath.unshift("")}if(!srcPath.length){result.pathname=null;result.path=null}else{result.pathname=srcPath.join("/")}if(!isNull(result.pathname)||!isNull(result.search)){result.path=(result.pathname?result.pathname:"")+(result.search?result.search:"")}result.auth=relative.auth||result.auth;result.slashes=result.slashes||relative.slashes;result.href=result.format();return result};Url.prototype.parseHost=function(){var host=this.host;var port=portPattern.exec(host);if(port){port=port[0];if(port!==":"){this.port=port.substr(1)}host=host.substr(0,host.length-port.length)}if(host)this.hostname=host};function isString(arg){return typeof arg==="string"}function isObject(arg){return typeof arg==="object"&&arg!==null}function isNull(arg){return arg===null}function isNullOrUndefined(arg){return arg==null}},{punycode:14,querystring:17}],32:[function(require,module,exports){module.exports=require(3)},{}],33:[function(require,module,exports){module.exports=require(4)},{"./support/isBuffer":32,_process:13,inherits:10}],34:[function(require,module,exports){module.exports=FileStream;var debug=require("debug")("webtorrent:file-stream");var inherits=require("inherits");var path=require("path");var stream=require("stream");var VideoStream=require("./video-stream");inherits(FileStream,stream.Readable);function FileStream(file,opts){var self=this;if(!(self instanceof FileStream))return new FileStream(file,opts);stream.Readable.call(self,opts);debug("new filestream %s",JSON.stringify(opts));if(!opts)opts={};if(!opts.start)opts.start=0;if(!opts.end)opts.end=file.length-1;self.length=opts.end-opts.start+1;var offset=opts.start+file.offset;var pieceLength=opts.pieceLength;self.startPiece=offset/pieceLength|0;self.endPiece=(opts.end+file.offset)/pieceLength|0;self._extname=path.extname(file.name);self._storage=file.storage;self._piece=self.startPiece;self._missing=self.length;self._reading=false;self._notifying=false;self._destroyed=false;self._criticalLength=Math.min(1024*1024/pieceLength|0,2);self._offset=offset-self.startPiece*pieceLength}FileStream.prototype._read=function(){debug("_read");var self=this;if(self._reading)return;self._reading=true;self.notify()};FileStream.prototype.notify=function(){debug("notify");var self=this;if(!self._reading||self._missing===0)return;if(!self._storage.bitfield.get(self._piece))return self._storage.emit("critical",self._piece,self._piece+self._criticalLength);if(self._notifying)return;self._notifying=true;var p=self._piece;debug("before read %s",p);self._storage.read(self._piece++,function(err,buffer){debug("after read %s (buffer.length %s) (err %s)",p,buffer.length,err&&err.message||err);self._notifying=false;if(self._destroyed)return;if(err){self._storage.emit("error",err);return self.destroy(err)}if(self._offset){buffer=buffer.slice(self._offset);self._offset=0}if(self._missing<buffer.length){buffer=buffer.slice(0,self._missing)}self._missing-=buffer.length;debug("pushing buffer of length %s",buffer.length);self._reading=false;self.push(buffer);if(self._missing===0)self.push(null)})};FileStream.prototype.pipe=function(dst){var self=this;var pipe=stream.Readable.prototype.pipe;if(dst&&dst.nodeName==="VIDEO"){var type=self._extname===".webm"?'video/webm; codecs="vorbis,vp8"':self._extname===".mp4"?'video/mp4; codecs="avc1.42c01e,mp4a.40.2"':undefined;return pipe.call(self,new VideoStream(dst,{type:type}))}else return pipe.call(self,dst)};FileStream.prototype.destroy=function(){var self=this;if(self._destroyed)return;self._destroyed=true}},{"./video-stream":38,debug:49,inherits:61,path:12,stream:30}],35:[function(require,module,exports){module.exports=RarityMap;function RarityMap(swarm,numPieces){var self=this;self.swarm=swarm;self.numPieces=numPieces;function initWire(wire){wire.on("have",function(index){self.pieces[index]++});wire.on("bitfield",self.recalculate.bind(self));wire.on("close",function(){for(var i=0;i<self.numPieces;++i){self.pieces[i]-=wire.peerPieces.get(i)}})}self.swarm.wires.forEach(initWire);self.swarm.on("wire",function(wire){self.recalculate();initWire(wire)});self.recalculate()}RarityMap.prototype.recalculate=function(){var self=this;self.pieces=[];for(var i=0;i<self.numPieces;++i){self.pieces[i]=0}self.swarm.wires.forEach(function(wire){for(var i=0;i<self.numPieces;++i){self.pieces[i]+=wire.peerPieces.get(i)}})};RarityMap.prototype.getRarestPiece=function(pieceFilterFunc){var self=this;var candidates=[];var min=Infinity;pieceFilterFunc=pieceFilterFunc||function(){return true};for(var i=0;i<self.numPieces;++i){if(!pieceFilterFunc(i))continue;var availability=self.pieces[i];if(availability===min){candidates.push(i)}else if(availability<min){candidates=[i];min=availability}}if(candidates.length>0){return candidates[Math.random()*candidates.length|0]}else{return-1}}},{}],36:[function(require,module,exports){(function(process,Buffer){module.exports=Storage;var BitField=require("bitfield");var BlockStream=require("block-stream");var debug=require("debug")("webtorrent:storage");var dezalgo=require("dezalgo");var eos=require("end-of-stream");var EventEmitter=require("events").EventEmitter;var extend=require("extend.js");var FileStream=require("./file-stream");var inherits=require("inherits");var MultiStream=require("multistream");var once=require("once");var sha1=require("git-sha1");var stream=require("stream");var BLOCK_LENGTH=16*1024;var BLOCK_BLANK=0;var BLOCK_RESERVED=1;var BLOCK_WRITTEN=2;function noop(){}inherits(Piece,EventEmitter);function Piece(index,hash,buffer){var self=this;EventEmitter.call(self);self.index=index;self.hash=hash;if(typeof buffer==="number"){self.buffer=null;self.length=buffer}else{self.buffer=buffer;self.length=buffer.length}self._reset()}Piece.prototype.readBlock=function(offset,length,cb){var self=this;cb=dezalgo(cb);if(!self.buffer||!self._verifyOffset(offset)){return cb(new Error("invalid block offset "+offset))}cb(null,self.buffer.slice(offset,offset+length))};Piece.prototype.writeBlock=function(offset,buffer,cb){var self=this;cb=dezalgo(cb);if(!self._verifyOffset(offset)||!self._verifyBlock(offset,buffer)){return cb(new Error("invalid block "+offset+":"+buffer.length))}self._lazyAllocBuffer();var i=offset/BLOCK_LENGTH;if(self.blocks[i]===BLOCK_WRITTEN){return cb(null)}buffer.copy(self.buffer,offset);self.blocks[i]=BLOCK_WRITTEN;self.blocksWritten+=1;if(self.blocksWritten===self.blocks.length){self.verify()}cb(null)};Piece.prototype.reserveBlock=function(endGame){var self=this;var len=self.blocks.length;for(var i=0;i<len;i++){if(self.blocks[i]&&!endGame||self.blocks[i]===BLOCK_WRITTEN){continue}self.blocks[i]=BLOCK_RESERVED;return{offset:i*BLOCK_LENGTH,length:i===len-1?self.length-i*BLOCK_LENGTH:BLOCK_LENGTH}}return null};Piece.prototype.cancelBlock=function(offset){var self=this;if(!self.buffer||!self._verifyOffset(offset)){return false}var i=offset/BLOCK_LENGTH;if(self.blocks[i]===BLOCK_RESERVED){self.blocks[i]=BLOCK_BLANK}return true};Piece.prototype._reset=function(){var self=this;self.verified=false;self.blocks=new Buffer(Math.ceil(self.length/BLOCK_LENGTH));self.blocks.fill(0);self.blocksWritten=0};Piece.prototype.verify=function(buffer){var self=this;buffer=buffer||self.buffer;if(self.verified||!buffer){return}self.verified=sha1(buffer)===self.hash;if(self.verified){self.emit("done")}else{self.emit("warning",new Error("piece "+self.index+" failed verification; "+sha1(buffer)+" expected "+self.hash));self._reset()}};Piece.prototype._verifyOffset=function(offset){var self=this;if(offset%BLOCK_LENGTH===0){return true}else{self.emit("warning",new Error("piece "+self.index+" invalid offset "+offset+" not multiple of "+BLOCK_LENGTH+" bytes"));return false}};Piece.prototype._verifyBlock=function(offset,buffer){var self=this;if(buffer.length===BLOCK_LENGTH){return true}else if(buffer.length===self.length-offset&&self.length-offset<BLOCK_LENGTH){return true}else{self.emit("warning",new Error("piece "+self.index+" invalid block of size "+buffer.length+" bytes"));return false}};Piece.prototype._lazyAllocBuffer=function(){var self=this;if(!self.buffer){self.buffer=new Buffer(self.length)}};inherits(File,EventEmitter);function File(storage,file,pieces,pieceLength){var self=this;EventEmitter.call(self);self.storage=storage;self.name=file.name;self.path=file.path;self.length=file.length;self.offset=file.offset;self.pieces=pieces;self.pieceLength=pieceLength;self.done=false;self.pieces.forEach(function(piece){piece.on("done",function(){self._checkDone()})});self._checkDone()}File.prototype.select=function(){var self=this;if(self.pieces.length>0){self.storage.emit("select",self.pieces[0].index,self.pieces[self.pieces.length-1].index,false)}};File.prototype.deselect=function(){var self=this;if(self.pieces.length>0){self.storage.emit("deselect",self.pieces[0].index,self.pieces[self.pieces.length-1].index,false)}};File.prototype.createReadStream=function(opts){var self=this;debug("createReadStream");opts=extend({pieceLength:self.pieceLength},opts);var stream=new FileStream(self,opts);self.storage.emit("select",stream.startPiece,stream.endPiece,true,stream.notify.bind(stream));eos(stream,function(){self.storage.emit("deselect",stream.startPiece,stream.endPiece,true)});return stream};File.prototype._checkDone=function(){var self=this;self.done=self.pieces.every(function(piece){return piece.verified});if(self.done){process.nextTick(function(){self.emit("done")})}};inherits(Storage,EventEmitter);function Storage(parsedTorrent,opts){var self=this;EventEmitter.call(self);opts=opts||{};self.bitfield=new BitField(parsedTorrent.pieces.length);self.done=false;self.closed=false;self.readonly=true;if(!opts.nobuffer){self.buffer=new Buffer(parsedTorrent.length)}var pieceLength=self.pieceLength=parsedTorrent.pieceLength;var lastPieceLength=parsedTorrent.lastPieceLength;var numPieces=parsedTorrent.pieces.length;self.pieces=parsedTorrent.pieces.map(function(hash,index){var start=index*pieceLength;var end=start+(index===numPieces-1?lastPieceLength:pieceLength);var buffer=self.buffer?self.buffer.slice(start,end):end-start;var piece=new Piece(index,hash,buffer);piece.on("done",self._onPieceDone.bind(self,piece));return piece});self.files=parsedTorrent.files.map(function(fileObj){var start=fileObj.offset;var end=start+fileObj.length-1;var startPiece=start/pieceLength|0;var endPiece=end/pieceLength|0;var pieces=self.pieces.slice(startPiece,endPiece+1);var file=new File(self,fileObj,pieces,pieceLength);file.on("done",self._onFileDone.bind(self,file));return file})}Storage.BLOCK_LENGTH=BLOCK_LENGTH;Storage.prototype.load=function(streams,cb){var self=this;if(!Array.isArray(streams))streams=[streams];if(!cb)cb=function(){};cb=once(cb);var pieceIndex=0;new MultiStream(streams).pipe(new BlockStream(self.pieceLength,{nopad:true})).on("data",function(piece){var index=pieceIndex;pieceIndex+=1;var blockIndex=0;var s=new BlockStream(BLOCK_LENGTH,{nopad:true});s.on("data",function(block){var offset=blockIndex*BLOCK_LENGTH;blockIndex+=1;self.writeBlock(index,offset,block)});s.end(piece)}).on("end",function(){cb(null)}).on("error",function(err){cb(err)})};Object.defineProperty(Storage.prototype,"downloaded",{get:function(){var self=this;return self.pieces.reduce(function(total,piece){return total+(piece.verified?piece.length:piece.blocksWritten*BLOCK_LENGTH)},0)}});Object.defineProperty(Storage.prototype,"numMissing",{get:function(){var self=this;var numMissing=self.pieces.length;for(var index=0,len=self.pieces.length;index<len;index++){numMissing-=self.bitfield.get(index)}return numMissing}});Storage.prototype.readBlock=function(index,offset,length,cb){var self=this;cb=dezalgo(cb);var piece=self.pieces[index];if(!piece)return cb(new Error("invalid piece index "+index));piece.readBlock(offset,length,cb)};Storage.prototype.writeBlock=function(index,offset,buffer,cb){var self=this;if(!cb)cb=noop;cb=dezalgo(cb);if(self.readonly)return cb(new Error("cannot write to readonly storage"));var piece=self.pieces[index];if(!piece)return cb(new Error("invalid piece index "+index));piece.writeBlock(offset,buffer,cb)};Storage.prototype.read=function(index,range,cb,force){var self=this;if(typeof range==="function"){force=cb;cb=range;range=null}cb=dezalgo(cb);var piece=self.pieces[index];if(!piece){return cb(new Error("invalid piece index "+index))}if(!piece.verified&&!force){return cb(new Error("Storage.read called on incomplete piece "+index))}var offset=0;var length=piece.length;if(range){offset=range.offset||0;length=range.length||length}if(piece.buffer){return cb(null,piece.buffer.slice(offset,offset+length))}var blocks=[];function readNextBlock(){if(length<=0)return cb(null,Buffer.concat(blocks));var blockOffset=offset;var blockLength=Math.min(BLOCK_LENGTH,length);offset+=blockLength;length-=blockLength;self.readBlock(index,blockOffset,blockLength,function(err,block){if(err)return cb(err);blocks.push(block);readNextBlock()})}readNextBlock()};Storage.prototype.reserveBlock=function(index,endGame){var self=this;var piece=self.pieces[index];if(!piece)return null;return piece.reserveBlock(endGame)};Storage.prototype.cancelBlock=function(index,offset){var self=this;var piece=self.pieces[index];if(!piece)return false;return piece.cancelBlock(offset)};Storage.prototype.remove=function(cb){if(cb)dezalgo(cb)(null)};Storage.prototype.close=function(cb){var self=this;self.closed=true;if(cb)dezalgo(cb)(null)};Storage.prototype._onPieceDone=function(piece){var self=this;self.bitfield.set(piece.index);debug("piece done "+piece.index+" ("+self.numMissing+" still missing)");self.emit("piece",piece)};Storage.prototype._onFileDone=function(file){var self=this;debug("file done "+file.name);self.emit("file",file);self._checkDone()};Storage.prototype._checkDone=function(){var self=this;if(!self.done&&self.files.every(function(file){return file.done})){self.done=true;self.emit("done")}}}).call(this,require("_process"),require("buffer").Buffer)},{"./file-stream":34,_process:13,bitfield:40,"block-stream":41,buffer:6,debug:49,dezalgo:52,"end-of-stream":55,events:9,"extend.js":56,"git-sha1":59,inherits:61,multistream:62,once:64,stream:30}],37:[function(require,module,exports){(function(process){module.exports=Torrent;var addrToIPPort=require("addr-to-ip-port");var concat=require("concat-stream");var debug=require("debug")("webtorrent:torrent");var Discovery=require("torrent-discovery");var EventEmitter=require("events").EventEmitter;var fs=require("fs");var hh=require("http-https");var inherits=require("inherits");var once=require("once");var parallel=require("run-parallel");var parseTorrent=require("parse-torrent");var RarityMap=require("./rarity-map");var reemit=require("re-emitter");var Server=require("./server");var Storage=require("./storage");var Swarm=require("bittorrent-swarm");var url=require("url");var ut_metadata=require("ut_metadata");var ut_pex=require("ut_pex");var MAX_BLOCK_LENGTH=128*1024;var MAX_OUTSTANDING_REQUESTS=5;var PIECE_TIMEOUT=1e4;var CHOKE_TIMEOUT=5e3;var SPEED_THRESHOLD=3*Storage.BLOCK_LENGTH;var RECHOKE_INTERVAL=1e4;var RECHOKE_OPTIMISTIC_DURATION=2;function noop(){}inherits(Torrent,EventEmitter);function Torrent(torrentId,opts){var self=this;EventEmitter.call(self);debug("new torrent");self.client=opts.client;self.hotswapEnabled="hotswap"in opts?opts.hotswap:true;self.verify=opts.verify;self.storageOpts=opts.storageOpts;self.chokeTimeout=opts.chokeTimeout||CHOKE_TIMEOUT;self.pieceTimeout=opts.pieceTimeout||PIECE_TIMEOUT;self.strategy=opts.strategy||"sequential";self._rechokeNumSlots=opts.uploads===false||opts.uploads===0?0:+opts.uploads||10;self._rechokeOptimisticWire=null;self._rechokeOptimisticTime=0;self._rechokeIntervalId=null;self.ready=false;self.files=[];self.metadata=null;self.parsedTorrent=null;self.storage=null;self.numBlockedPeers=0;self._amInterested=false;self._destroyed=false;self._selections=[];self._critical=[];self._storageImpl=opts.storage||Storage;var parsedTorrent=parseTorrent(torrentId);if(parsedTorrent&&parsedTorrent.infoHash){onTorrentId(parsedTorrent)}else if(typeof hh.get==="function"&&/^https?:/.test(torrentId)){httpGet(torrentId,function(err,torrent){if(err)return self.emit("error",new Error("error downloading torrent: "+err.message));onTorrentId(torrent)})}else if(typeof fs.readFile==="function"){fs.readFile(torrentId,function(err,torrent){if(err)return self.emit("error",new Error("invalid torrent id"));onTorrentId(torrent)})}else throw new Error("invalid torrent id");function onTorrentId(torrentId){parsedTorrent=parseTorrent(torrentId);self.infoHash=parsedTorrent.infoHash;if(parsedTorrent.name)self.name=parsedTorrent.name;self.swarm=new Swarm(self.infoHash,self.client.peerId,{handshake:{dht:!!self.client.dht}});reemit(self.swarm,self,["warning","error"]);self.swarm.on("wire",self._onWire.bind(self));self.swarm.on("download",self.client.downloadSpeed.bind(self.client));self.swarm.on("upload",self.client.uploadSpeed.bind(self.client));if(process.browser){self._onSwarmListening(parsedTorrent)}else{self.swarm.listen(self.client.torrentPort,self._onSwarmListening.bind(self,parsedTorrent))}process.nextTick(function(){self.emit("infoHash")})}}Object.defineProperty(Torrent.prototype,"length",{get:function(){return this.parsedTorrent&&this.parsedTorrent.length||0}});Object.defineProperty(Torrent.prototype,"timeRemaining",{get:function(){if(this.swarm.downloadSpeed()===0)return Infinity;else return(this.length-this.downloaded)/this.swarm.downloadSpeed()*1e3}});Object.defineProperty(Torrent.prototype,"progress",{get:function(){return this.parsedTorrent&&this.downloaded/this.parsedTorrent.length||0}});Object.defineProperty(Torrent.prototype,"downloaded",{get:function(){return this.storage&&this.storage.downloaded||0}});Object.defineProperty(Torrent.prototype,"uploaded",{get:function(){return this.swarm.uploaded}});Object.defineProperty(Torrent.prototype,"ratio",{get:function(){return this.uploaded&&this.downloaded/this.uploaded||0}});Torrent.prototype._onSwarmListening=function(parsed,port){var self=this;if(self._destroyed)return;self.client.torrentPort=port;self.discovery=new Discovery({announce:parsed.announce,dht:self.client.dht,tracker:self.client.tracker,peerId:self.client.peerId,port:port});self.discovery.setTorrent(self.infoHash);self.discovery.on("peer",self.addPeer.bind(self));reemit(self.discovery,self,["dhtAnnounce","warning","error"]);if(parsed.info)self._onMetadata(parsed);self.emit("listening",port)};Torrent.prototype._onMetadata=function(metadata){var self=this;if(self.metadata||self._destroyed)return;debug("got metadata");if(metadata&&metadata.infoHash){self.metadata=parseTorrent.toBuffer(metadata);self.parsedTorrent=metadata}else{self.metadata=metadata;try{self.parsedTorrent=parseTorrent(self.metadata)}catch(err){return self.emit("error",err)}}self.name=self.parsedTorrent.name;self.discovery.setTorrent(self.parsedTorrent);self.rarityMap=new RarityMap(self.swarm,self.parsedTorrent.pieces.length);self.storage=new self._storageImpl(self.parsedTorrent,self.storageOpts);self.storage.on("piece",self._onStoragePiece.bind(self));self.storage.on("file",function(file){self.emit("file",file)});self._reservations=self.storage.pieces.map(function(){return[]});self.storage.on("done",function(){if(self.discovery.tracker)self.discovery.tracker.complete();debug("torrent "+self.infoHash+" done");self.emit("done")});self.storage.on("select",self.select.bind(self));self.storage.on("deselect",self.deselect.bind(self));self.storage.on("critical",self.critical.bind(self));self.storage.files.forEach(function(file){self.files.push(file)});self.swarm.wires.forEach(function(wire){if(wire.ut_metadata)wire.ut_metadata.setMetadata(self.metadata);self._onWireWithMetadata(wire)});if(self.verify){process.nextTick(function(){debug("verifying existing torrent data");var numPieces=0;var numVerified=0;parallel(self.storage.pieces.map(function(piece){return function(cb){self.storage.read(piece.index,function(err,buffer){numPieces+=1;self.emit("verifying",{percentDone:100*numPieces/self.storage.pieces.length,percentVerified:100*numVerified/self.storage.pieces.length});if(!err&&buffer){piece.verify(buffer);numVerified+=piece.verified;debug("piece "+(piece.verified?"verified":"invalid")+" "+piece.index)}cb()},true)}}),self._onStorage.bind(self))})}else{process.nextTick(self._onStorage.bind(self))}process.nextTick(function(){self.emit("metadata")})};Torrent.prototype.destroy=function(cb){var self=this;debug("destroy");self._destroyed=true;clearInterval(self._rechokeIntervalId);var tasks=[];if(self.swarm)tasks.push(function(cb){self.swarm.destroy(cb)});if(self.discovery)tasks.push(function(cb){self.discovery.stop(cb)});if(self.storage)tasks.push(function(cb){self.storage.close(cb)});parallel(tasks,cb)};Torrent.prototype.addPeer=function(peer){var self=this;if(typeof peer==="string"&&self.client.blocked&&self.client.blocked.contains(addrToIPPort(peer)[0])){self.numBlockedPeers+=1;self.emit("blocked-peer",peer)}else{self.emit("peer",peer);self.swarm.addPeer(peer)}};Torrent.prototype.select=function(start,end,priority,notify){var self=this;if(start>end||start<0||end>=self.storage.pieces.length)throw new Error("invalid selection ",start,":",end);priority=Number(priority)||0;debug("select %s-%s (priority %s)",start,end,priority);self._selections.push({from:start,to:end,offset:0,priority:priority,notify:notify||noop});self._selections.sort(function(a,b){return b.priority-a.priority});self._updateSelections()};Torrent.prototype.deselect=function(start,end,priority){var self=this;priority=Number(priority)||0;debug("deselect %s-%s (priority %s)",start,end,priority);for(var i=0;i<self._selections.length;++i){var s=self._selections[i];if(s.from===start&&s.to===end&&s.priority===priority){self._selections.splice(i--,1);break}}self._updateSelections()};Torrent.prototype.critical=function(start,end){var self=this;debug("critical %s-%s",start,end);for(var i=start;i<=end;++i){self._critical[i]=true}self._updateSelections()};Torrent.prototype._onWire=function(wire){var self=this;wire.use(ut_metadata(self.metadata));if(!self.metadata){wire.ut_metadata.on("metadata",function(metadata){debug("got metadata via ut_metadata");self._onMetadata(metadata)});wire.ut_metadata.fetch()}if(typeof ut_pex==="function")wire.use(ut_pex());if(wire.ut_pex)wire.ut_pex.on("peer",function(peer){debug("got peer via ut_pex "+peer);self.addPeer(peer)});if(wire.ut_pex)wire.ut_pex.on("dropped",function(peer){if(!(peer in self.swarm._peers))self.swarm.removePeer(peer)});wire.setKeepAlive(true);if(wire.peerExtensions.dht&&self.client.dht&&self.client.dht.port){wire.port(self.client.dht.port)}wire.on("port",function(port){debug("port message from "+wire.remoteAddress)});wire.on("timeout",function(){debug("wire timeout from "+wire.remoteAddress);wire.destroy()});wire.setTimeout(self.pieceTimeout);if(self.metadata){self._onWireWithMetadata(wire)}};Torrent.prototype._onWireWithMetadata=function(wire){var self=this;var timeoutId=null;var timeoutMs=self.chokeTimeout;function onChokeTimeout(){if(self._destroyed||wire._destroyed)return;if(self.swarm.numQueued>2*(self.swarm.numConns-self.swarm.numPeers)&&wire.amInterested){wire.destroy()}else{timeoutId=setTimeout(onChokeTimeout,timeoutMs)}}var i=0;function updateSeedStatus(){if(wire.peerPieces.length!==self.storage.pieces.length)return;for(;i<self.storage.pieces.length;++i){if(!wire.peerPieces.get(i))return}wire.isSeeder=true;wire.choke()}wire.on("bitfield",function(){updateSeedStatus();self._update()});wire.on("have",function(){updateSeedStatus();self._update()});wire.once("interested",function(){wire.unchoke()});wire.on("close",function(){clearTimeout(timeoutId)});wire.on("choke",function(){clearTimeout(timeoutId);timeoutId=setTimeout(onChokeTimeout,timeoutMs)});wire.on("unchoke",function(){clearTimeout(timeoutId);self._update()});wire.on("request",function(index,offset,length,cb){if(length>MAX_BLOCK_LENGTH){debug(wire.remoteAddress,"requested invalid block size",length);return wire.destroy()}self.storage.readBlock(index,offset,length,cb)});wire.bitfield(self.storage.bitfield);wire.interested();timeoutId=setTimeout(onChokeTimeout,timeoutMs);wire.isSeeder=false;updateSeedStatus()};Torrent.prototype._onStorage=function(){var self=this;debug("on storage");self.storage.readonly=false;self.select(0,self.storage.pieces.length-1,false);self._rechokeIntervalId=setInterval(self._rechoke.bind(self),RECHOKE_INTERVAL);self._rechokeIntervalId.unref&&self._rechokeIntervalId.unref();process.nextTick(function(){self.ready=true;self.emit("ready")})};Torrent.prototype._onStoragePiece=function(piece){var self=this;debug("piece done %s",piece.index);self._reservations[piece.index]=null;self.swarm.wires.forEach(function(wire){wire.have(piece.index)});self._gcSelections()};Torrent.prototype._updateSelections=function(){var self=this;if(!self.swarm||self._destroyed)return;if(!self.metadata)return self.once("metadata",self._updateSelections.bind(self));process.nextTick(self._gcSelections.bind(self));self._updateInterest();self._update()};Torrent.prototype._gcSelections=function(){var self=this;for(var i=0;i<self._selections.length;i++){var s=self._selections[i];var oldOffset=s.offset;while(self.storage.bitfield.get(s.from+s.offset)&&s.from+s.offset<s.to){s.offset++}if(oldOffset!==s.offset)s.notify();if(s.to!==s.from+s.offset)continue;if(!self.storage.bitfield.get(s.from+s.offset))continue;self._selections.splice(i--,1);s.notify();self._updateInterest()}if(!self._selections.length)self.emit("idle")};Torrent.prototype._updateInterest=function(){var self=this;var prev=self._amInterested;self._amInterested=!!self._selections.length;self.swarm.wires.forEach(function(wire){if(self._amInterested)wire.interested();else wire.uninterested()});if(prev===self._amInterested)return;if(self._amInterested)self.emit("interested");else self.emit("uninterested")};Torrent.prototype._update=function(){var self=this;if(self._destroyed)return;randomizedForEach(self.swarm.wires,self._updateWire.bind(self))};Torrent.prototype._updateWire=function(wire){var self=this;if(wire.peerChoking)return;if(!wire.downloaded)return validateWire();trySelectWire(false)||trySelectWire(true);function genPieceFilterFunc(start,end,tried,rank){return function(i){return i>=start&&i<=end&&!(i in tried)&&wire.peerPieces.get(i)&&(!rank||rank(i))}}function validateWire(){if(wire.requests.length)return;for(var i=self._selections.length;i--;){var next=self._selections[i];var piece;if(self.strategy==="rarest"){var start=next.from+next.offset;var end=next.to;var len=end-start+1;var tried={};var tries=0;var filter=genPieceFilterFunc(start,end,tried);while(tries<len){piece=self.rarityMap.getRarestPiece(filter);if(piece<0)break;if(self._request(wire,piece,false))return;tried[piece]=true;tries+=1}}else{for(piece=next.to;piece>=next.from+next.offset;--piece){if(!wire.peerPieces.get(piece))continue;if(self._request(wire,piece,false))return}}}}function speedRanker(){var speed=wire.downloadSpeed()||1;if(speed>SPEED_THRESHOLD)return function(){return true};var secs=MAX_OUTSTANDING_REQUESTS*Storage.BLOCK_LENGTH/speed;var tries=10;var ptr=0;return function(index){if(!tries||self.storage.bitfield.get(index))return true;var piece=self.storage.pieces[index];var missing=piece.blocks.length-piece.blocksWritten;for(;ptr<self.swarm.wires.length;ptr++){var otherWire=self.swarm.wires[ptr];var otherSpeed=otherWire.downloadSpeed();if(otherSpeed<SPEED_THRESHOLD)continue;if(otherSpeed<=speed)continue;if(!otherWire.peerPieces.get(index))continue;if((missing-=otherSpeed*secs)>0)continue;tries--;return false}return true}}function shufflePriority(i){var last=i;for(var j=i;j<self._selections.length&&self._selections[j].priority;j++){last=j}var tmp=self._selections[i];self._selections[i]=self._selections[last];self._selections[last]=tmp}function trySelectWire(hotswap){if(wire.requests.length>=MAX_OUTSTANDING_REQUESTS)return true;var rank=speedRanker();for(var i=0;i<self._selections.length;i++){var next=self._selections[i];var piece;if(self.strategy==="rarest"){var start=next.from+next.offset;var end=next.to;var len=end-start+1;var tried={};var tries=0;var filter=genPieceFilterFunc(start,end,tried,rank);while(tries<len){piece=self.rarityMap.getRarestPiece(filter);if(piece<0)break;while(self._request(wire,piece,self._critical[piece]||hotswap)){}if(wire.requests.length<MAX_OUTSTANDING_REQUESTS){tried[piece]=true;tries++;continue}if(next.priority)shufflePriority(i);return true}}else{for(piece=next.from+next.offset;piece<=next.to;piece++){if(!wire.peerPieces.get(piece)||!rank(piece))continue;while(self._request(wire,piece,self._critical[piece]||hotswap)){}if(wire.requests.length<MAX_OUTSTANDING_REQUESTS)continue;if(next.priority)shufflePriority(i);return true}}}return false}};Torrent.prototype._rechoke=function(){var self=this;if(self._rechokeOptimisticTime>0)self._rechokeOptimisticTime-=1;else self._rechokeOptimisticWire=null;var peers=[];self.swarm.wires.forEach(function(wire){if(!wire.isSeeder&&wire!==self._rechokeOptimisticWire){peers.push({wire:wire,downloadSpeed:wire.downloadSpeed(),uploadSpeed:wire.uploadSpeed(),salt:Math.random(),isChoked:true})}});peers.sort(rechokeSort);var unchokeInterested=0;var i=0;for(;i<peers.length&&unchokeInterested<self._rechokeNumSlots;++i){peers[i].isChoked=false;if(peers[i].wire.peerInterested)unchokeInterested+=1}if(!self._rechokeOptimisticWire&&i<peers.length&&self._rechokeNumSlots){var candidates=peers.slice(i).filter(function(peer){return peer.wire.peerInterested});var optimistic=candidates[randomInt(candidates.length)];if(optimistic){optimistic.isChoked=false;self._rechokeOptimisticWire=optimistic.wire;self._rechokeOptimisticTime=RECHOKE_OPTIMISTIC_DURATION}}peers.forEach(function(peer){if(peer.wire.amChoking!==peer.isChoked){if(peer.isChoked)peer.wire.choke();else peer.wire.unchoke()}});function rechokeSort(peerA,peerB){if(peerA.downloadSpeed!==peerB.downloadSpeed)return peerB.downloadSpeed-peerA.downloadSpeed;if(peerA.uploadSpeed!==peerB.uploadSpeed)return peerB.uploadSpeed-peerA.uploadSpeed;
if(peerA.wire.amChoking!==peerB.wire.amChoking)return peerA.wire.amChoking?1:-1;return peerA.salt-peerB.salt}};Torrent.prototype._hotswap=function(wire,index){var self=this;if(!self.hotswapEnabled)return false;var speed=wire.downloadSpeed();if(speed<Storage.BLOCK_LENGTH)return false;if(!self._reservations[index])return false;var r=self._reservations[index];if(!r){return false}var minSpeed=Infinity;var minWire;var i;for(i=0;i<r.length;i++){var otherWire=r[i];if(!otherWire||otherWire===wire)continue;var otherSpeed=otherWire.downloadSpeed();if(otherSpeed>=SPEED_THRESHOLD)continue;if(2*otherSpeed>speed||otherSpeed>minSpeed)continue;minWire=otherWire;minSpeed=otherSpeed}if(!minWire)return false;for(i=0;i<r.length;i++){if(r[i]===minWire)r[i]=null}for(i=0;i<minWire.requests.length;i++){var req=minWire.requests[i];if(req.piece!==index)continue;self.storage.cancelBlock(index,req.offset)}self.emit("hotswap",minWire,wire,index);return true};Torrent.prototype._request=function(wire,index,hotswap){var self=this;var numRequests=wire.requests.length;if(self.storage.bitfield.get(index))return false;if(numRequests>=MAX_OUTSTANDING_REQUESTS)return false;var endGame=wire.requests.length===0&&self.storage.numMissing<30;var block=self.storage.reserveBlock(index,endGame);if(!block&&!endGame&&hotswap&&self._hotswap(wire,index))block=self.storage.reserveBlock(index,false);if(!block)return false;var r=self._reservations[index];if(!r){r=self._reservations[index]=[]}var i=r.indexOf(null);if(i===-1)i=r.length;r[i]=wire;function gotPiece(err,buffer){if(!self.ready){self.once("ready",function(){gotPiece(err,buffer)});return}if(r[i]===wire)r[i]=null;if(err){debug("error getting piece "+index+"(offset: "+block.offset+" length: "+block.length+") from "+wire.remoteAddress+" "+err.message);self.storage.cancelBlock(index,block.offset);process.nextTick(self._update.bind(self));return false}else{self.storage.writeBlock(index,block.offset,buffer,function(err){if(err){debug("error writing block");self.storage.cancelBlock(index,block.offset)}process.nextTick(self._update.bind(self))})}}wire.request(index,block.offset,block.length,gotPiece);return true};Torrent.prototype.createServer=function(opts){var self=this;if(typeof Server==="function"){return new Server(self,opts)}};function randomInt(high){return Math.random()*high|0}function randomizedForEach(array,cb){var indices=array.map(function(value,index){return index});for(var i=indices.length-1;i>0;--i){var j=randomInt(i+1);var tmp=indices[i];indices[i]=indices[j];indices[j]=tmp}indices.forEach(function(index){cb(array[index],index,array)})}function httpGet(u,cb,maxRedirects){cb=once(cb);if(!maxRedirects)maxRedirects=5;if(maxRedirects===0)return cb(new Error("too many redirects"));hh.get(u,function(res){if(res.statusCode>=300&&res.statusCode<400&&"location"in res.headers){var location=res.headers.location;if(!url.parse(location).host){var parsed=url.parse(u);location=parsed.protocol+"//"+parsed.host+location}res.resume();return httpGet(location,cb,--maxRedirects)}res.pipe(concat(function(data){cb(null,data)}))}).on("error",cb)}}).call(this,require("_process"))},{"./rarity-map":35,"./server":5,"./storage":36,_process:13,"addr-to-ip-port":39,"bittorrent-swarm":86,"concat-stream":5,debug:49,events:9,fs:1,"http-https":5,inherits:61,once:64,"parse-torrent":65,"re-emitter":73,"run-parallel":74,"torrent-discovery":76,url:31,ut_metadata:82,ut_pex:5}],38:[function(require,module,exports){module.exports=VideoStream;var debug=require("debug")("webtorrent:video-stream");var inherits=require("inherits");var once=require("once");var stream=require("stream");var MediaSource=typeof window!=="undefined"&&(window.MediaSource||window.WebKitMediaSource);inherits(VideoStream,stream.Writable);function VideoStream(video,opts){var self=this;if(!(self instanceof VideoStream))return new VideoStream($video,opts);stream.Writable.call(self,opts);self.video=video;opts=opts||{};opts.type=opts.type||'video/webm; codecs="vorbis,vp8"';debug("new videostream %s %s",video,JSON.stringify(opts));self._mediaSource=new MediaSource;self._playing=false;self._sourceBuffer=null;self._cb=null;self.video.src=window.URL.createObjectURL(self._mediaSource);var sourceopen=once(function(){self._sourceBuffer=self._mediaSource.addSourceBuffer(opts.type);self._sourceBuffer.addEventListener("updateend",self._flow.bind(self));self._flow()});self._mediaSource.addEventListener("webkitsourceopen",sourceopen,false);self._mediaSource.addEventListener("sourceopen",sourceopen,false);self.on("finish",function(){debug("finish");self._mediaSource.endOfStream()});window.vs=self}VideoStream.prototype._write=function(chunk,encoding,cb){var self=this;if(!self._sourceBuffer)return self._cb=function(){self._write(chunk,encoding,cb)};if(self._sourceBuffer.updating)return cb(new Error("Cannot append buffer while source buffer updating"));self._sourceBuffer.appendBuffer(chunk);debug("appendBuffer %s",chunk.length);self._cb=cb;if(!self._playing){self.video.play();self._playing=true}};VideoStream.prototype._flow=function(){var self=this;debug("flow");if(self._cb){self._cb(null)}}},{debug:49,inherits:61,once:64,stream:30}],39:[function(require,module,exports){var cache={};module.exports=function addrToIPPort(addr){if(!cache[addr]){var s=addr.split(":");cache[addr]=[s[0],Number(s[1])]}return cache[addr]}},{}],40:[function(require,module,exports){(function(Buffer){var Container=typeof Buffer!=="undefined"?Buffer:typeof Int8Array!=="undefined"?Int8Array:function(l){var a=new Array(l);for(var i=0;i<l;i++)a[i]=0};function BitField(data,opts){if(!(this instanceof BitField)){return new BitField(data)}if(arguments.length===0){data=0}this.grow=opts&&(isFinite(opts.grow)&&getByteSize(opts.grow)||opts.grow)||0;if(typeof data==="number"||data===undefined){data=new Container(getByteSize(data));if(data.fill)data.fill(0)}this.buffer=data}function getByteSize(num){var out=num>>3;if(num%8!==0)out++;return out}BitField.prototype.get=function(i){var j=i>>3;return j<this.buffer.length&&!!(this.buffer[j]&128>>i%8)};BitField.prototype.set=function(i,b){var j=i>>3;if(b||arguments.length===1){this._grow(j+1);this.buffer[j]|=128>>i%8}else if(j<this.buffer.length){this.buffer[j]&=~(128>>i%8)}};BitField.prototype._grow=function(length){if(this.buffer.length<length&&length<=this.grow){var newBuffer=new Container(length);if(newBuffer.fill)newBuffer.fill(0);for(var i=0;i<this.buffer.length;i++){newBuffer[i]=this.buffer[i]}this.buffer=newBuffer}};if(typeof module!=="undefined")module.exports=BitField}).call(this,require("buffer").Buffer)},{buffer:6}],41:[function(require,module,exports){(function(process,Buffer){module.exports=BlockStream;var Stream=require("stream").Stream,inherits=require("inherits"),assert=require("assert").ok,debug=process.env.DEBUG?console.error:function(){};function BlockStream(size,opt){this.writable=this.readable=true;this._opt=opt||{};this._chunkSize=size||512;this._offset=0;this._buffer=[];this._bufferLength=0;if(this._opt.nopad)this._zeroes=false;else{this._zeroes=new Buffer(this._chunkSize);for(var i=0;i<this._chunkSize;i++){this._zeroes[i]=0}}}inherits(BlockStream,Stream);BlockStream.prototype.write=function(c){if(this._ended)throw new Error("BlockStream: write after end");if(c&&!Buffer.isBuffer(c))c=new Buffer(c+"");if(c.length){this._buffer.push(c);this._bufferLength+=c.length}if(this._bufferLength>=this._chunkSize){if(this._paused){this._needDrain=true;return false}this._emitChunk()}return true};BlockStream.prototype.pause=function(){this._paused=true};BlockStream.prototype.resume=function(){this._paused=false;return this._emitChunk()};BlockStream.prototype.end=function(chunk){if(typeof chunk==="function")cb=chunk,chunk=null;if(chunk)this.write(chunk);this._ended=true;this.flush()};BlockStream.prototype.flush=function(){this._emitChunk(true)};BlockStream.prototype._emitChunk=function(flush){if(flush&&this._zeroes){var padBytes=this._bufferLength%this._chunkSize;if(padBytes!==0)padBytes=this._chunkSize-padBytes;if(padBytes>0){this._buffer.push(this._zeroes.slice(0,padBytes));this._bufferLength+=padBytes}}if(this._emitting||this._paused)return;this._emitting=true;var bufferIndex=0;while(this._bufferLength>=this._chunkSize&&(flush||!this._paused)){var out,outOffset=0,outHas=this._chunkSize;while(outHas>0&&(flush||!this._paused)){var cur=this._buffer[bufferIndex],curHas=cur.length-this._offset;if(out||curHas<outHas){out=out||new Buffer(this._chunkSize);cur.copy(out,outOffset,this._offset,this._offset+Math.min(curHas,outHas))}else if(cur.length===outHas&&this._offset===0){out=cur}else{out=cur.slice(this._offset,this._offset+outHas)}if(curHas>outHas){this._offset+=outHas;outHas=0}else{outHas-=curHas;outOffset+=curHas;bufferIndex++;this._offset=0}}this._bufferLength-=this._chunkSize;assert(out.length===this._chunkSize);this.emit("data",out);out=null}this._buffer=this._buffer.slice(bufferIndex);if(this._paused){this._needsDrain=true;this._emitting=false;return}var l=this._buffer.length;if(flush&&!this._zeroes&&l){if(l===1){if(this._offset){this.emit("data",this._buffer[0].slice(this._offset))}else{this.emit("data",this._buffer[0])}}else{var outHas=this._bufferLength,out=new Buffer(outHas),outOffset=0;for(var i=0;i<l;i++){var cur=this._buffer[i],curHas=cur.length-this._offset;cur.copy(out,outOffset,this._offset);this._offset=0;outOffset+=curHas;this._bufferLength-=curHas}this.emit("data",out)}this._buffer.length=0;this._bufferLength=0;this._offset=0}if(this._needDrain){this._needDrain=false;this.emit("drain")}if(this._bufferLength===0&&this._ended&&!this._endEmitted){this._endEmitted=true;this.emit("end")}this._emitting=false}}).call(this,require("_process"),require("buffer").Buffer)},{_process:13,assert:2,buffer:6,inherits:61,stream:30}],42:[function(require,module,exports){(function(Buffer){module.exports=createTorrent;var bencode=require("bencode");var BlockStream=require("block-stream");var calcPieceLength=require("piece-length");var corePath=require("path");var FileReadStream=require("filestream/read");var flatten=require("flatten");var fs=require("fs");var MultiStream=require("multistream");var once=require("once");var parallel=require("run-parallel");var sha1=require("git-sha1");var stream=require("stream");function createTorrent(input,opts,cb){if(typeof opts==="function"){cb=opts;opts={}}var files;if(typeof FileList==="function"&&input instanceof FileList){input=Array.prototype.slice.call(input)}if(isBlob(input)||Buffer.isBuffer(input)){input=[input]}if(Array.isArray(input)&&input.length>0){opts.name=opts.name||input[0].name;files=input.map(function(item){if(!item)return;var file={length:item.size,path:[item.name]};if(isBlob(item))file.getStream=getBlobStream(item);else if(Buffer.isBuffer(item))file.getStream=getBufferStream(item);else throw new Error("Array must contain only File objects");return file});onFiles(files,opts,cb)}else if(typeof input==="string"){opts.name=opts.name||corePath.basename(input);traversePath(getFileInfo,input,function(err,files){if(err)return cb(err);if(Array.isArray(files)){files=flatten(files)}else{files=[files]}var dirName=corePath.normalize(input)+corePath.sep;files.forEach(function(file){file.getStream=getFSStream(file.path);file.path=file.path.replace(dirName,"").split(corePath.sep)});onFiles(files,opts,cb)})}else{throw new Error("invalid input type")}}function getBlobStream(data){return function(){return new FileReadStream(data)}}function getBufferStream(data){return function(){var stream=new stream.PassThrough;stream.end(data);return stream}}function getFSStream(data){return function(){return fs.createReadStream(data)}}createTorrent.announceList=[["udp://tracker.publicbt.com:80"],["udp://tracker.openbittorrent.com:80"],["udp://tracker.webtorrent.io:80"],["wss://tracker.webtorrent.io"]];function each(arr,fn,cb){var tasks=arr.map(function(item){return function(cb){fn(item,cb)}});parallel(tasks,cb)}function getFileInfo(path,cb){cb=once(cb);fs.stat(path,function(err,stat){if(err)return cb(err);var info={length:stat.size,path:path};cb(null,info)})}function traversePath(fn,path,cb){fs.readdir(path,function(err,entries){if(err&&err.code==="ENOTDIR"){fn(path,cb)}else if(err){cb(err)}else{each(entries,function(entry,cb){traversePath(fn,corePath.join(path,entry),cb)},cb)}})}function getPieceList(files,pieceLength,cb){cb=once(cb);var pieces="";var streams=files.map(function(file){return file.getStream});new MultiStream(streams).pipe(new BlockStream(pieceLength,{nopad:true})).on("data",function(chunk){pieces+=sha1(chunk)}).on("end",function(){cb(null,new Buffer(pieces,"hex"))}).on("error",cb)}function onFiles(files,opts,cb){var announceList=opts.announceList!==undefined?opts.announceList:createTorrent.announceList;var torrent={info:{name:opts.name},announce:announceList[0][0],"announce-list":announceList,"creation date":Number(opts.creationDate)||Date.now(),encoding:"UTF-8"};if(opts.comment!==undefined){torrent.info.comment=opts.comment}if(opts.createdBy!==undefined){torrent.info["created by"]=opts.createdBy}if(opts.private!==undefined){torrent.info.private=Number(opts.private)}if(opts.urlList!==undefined){torrent["url-list"]=opts.urlList}var singleFile=files.length===1;var length=files.reduce(sumLength,0);var pieceLength=opts.pieceLength||calcPieceLength(length);torrent.info["piece length"]=pieceLength;if(singleFile){torrent.info.length=length}getPieceList(files,pieceLength,function(err,pieces){if(err)return cb(err);torrent.info.pieces=pieces;files.forEach(function(file){delete file.getStream});if(!singleFile){torrent.info.files=files}cb(null,bencode.encode(torrent))})}function sumLength(sum,file){return sum+file.length}function isBlob(obj){return typeof Blob!=="undefined"&&obj instanceof Blob}}).call(this,require("buffer").Buffer)},{bencode:43,"block-stream":41,buffer:6,"filestream/read":58,flatten:46,fs:1,"git-sha1":59,multistream:62,once:64,path:12,"piece-length":47,"run-parallel":74,stream:30}],43:[function(require,module,exports){module.exports={encode:require("./lib/encode"),decode:require("./lib/decode")}},{"./lib/decode":44,"./lib/encode":45}],44:[function(require,module,exports){(function(Buffer){function decode(data,encoding){decode.position=0;decode.encoding=encoding||null;decode.data=!Buffer.isBuffer(data)?new Buffer(data):data;return decode.next()}decode.position=0;decode.data=null;decode.encoding=null;decode.next=function(){switch(decode.data[decode.position]){case 100:return decode.dictionary();break;case 108:return decode.list();break;case 105:return decode.integer();break;default:return decode.bytes();break}};decode.find=function(chr){var i=decode.position;var c=decode.data.length;var d=decode.data;while(i<c){if(d[i]===chr)return i;i++}throw new Error('Invalid data: Missing delimiter "'+String.fromCharCode(chr)+'" [0x'+chr.toString(16)+"]")};decode.dictionary=function(){decode.position++;var dict={};while(decode.data[decode.position]!==101){dict[decode.bytes()]=decode.next()}decode.position++;return dict};decode.list=function(){decode.position++;var lst=[];while(decode.data[decode.position]!==101){lst.push(decode.next())}decode.position++;return lst};decode.integer=function(){var end=decode.find(101);var number=decode.data.toString("ascii",decode.position+1,end);decode.position+=end+1-decode.position;return parseInt(number,10)};decode.bytes=function(){var sep=decode.find(58);var length=parseInt(decode.data.toString("ascii",decode.position,sep),10);var end=++sep+length;decode.position=end;return decode.encoding?decode.data.toString(decode.encoding,sep,end):decode.data.slice(sep,end)};module.exports=decode}).call(this,require("buffer").Buffer)},{buffer:6}],45:[function(require,module,exports){(function(Buffer){function encode(data){var buffers=[];encode._encode(buffers,data);return Buffer.concat(buffers)}encode._floatConversionDetected=false;encode._encode=function(buffers,data){if(Buffer.isBuffer(data)){buffers.push(new Buffer(data.length+":"));buffers.push(data);return}switch(typeof data){case"string":encode.bytes(buffers,data);break;case"number":encode.number(buffers,data);break;case"object":data.constructor===Array?encode.list(buffers,data):encode.dict(buffers,data);break}};var buff_e=new Buffer("e"),buff_d=new Buffer("d"),buff_l=new Buffer("l");encode.bytes=function(buffers,data){buffers.push(new Buffer(Buffer.byteLength(data)+":"+data))};encode.number=function(buffers,data){var maxLo=2147483648;var hi=data/maxLo<<0;var lo=data%maxLo<<0;var val=hi*maxLo+lo;buffers.push(new Buffer("i"+val+"e"));if(val!==data&&!encode._floatConversionDetected){encode._floatConversionDetected=true;console.warn('WARNING: Possible data corruption detected with value "'+data+'":','Bencoding only defines support for integers, value was converted to "'+val+'"');console.trace()}};encode.dict=function(buffers,data){buffers.push(buff_d);var j=0;var k;var keys=Object.keys(data).sort();var kl=keys.length;for(;j<kl;j++){k=keys[j];encode.bytes(buffers,k);encode._encode(buffers,data[k])}buffers.push(buff_e)};encode.list=function(buffers,data){var i=0,j=1;var c=data.length;buffers.push(buff_l);for(;i<c;i++){encode._encode(buffers,data[i])}buffers.push(buff_e)};module.exports=encode}).call(this,require("buffer").Buffer)},{buffer:6}],46:[function(require,module,exports){module.exports=function flatten(list,depth){depth=typeof depth=="number"?depth:Infinity;return _flatten(list,1);function _flatten(list,d){return list.reduce(function(acc,item){if(Array.isArray(item)&&d<depth){return acc.concat(_flatten(item,d+1))}else{return acc.concat(item)}},[])}}},{}],47:[function(require,module,exports){var closest=require("closest-to");var sizes=[];for(var i=14;i<=22;i++){sizes.push(Math.pow(2,i))}module.exports=function(size){return closest(size/Math.pow(2,10),sizes)}},{"closest-to":48}],48:[function(require,module,exports){module.exports=function(target,numbers){var closest=Infinity;var difference=0;var winner=null;numbers.sort(function(a,b){return a-b});for(var i=0,l=numbers.length;i<l;i++){difference=Math.abs(target-numbers[i]);if(difference>=closest){break}closest=difference;winner=numbers[i]}return winner}},{}],49:[function(require,module,exports){exports=module.exports=require("./debug");exports.log=log;exports.formatArgs=formatArgs;exports.save=save;exports.load=load;exports.useColors=useColors;exports.colors=["lightseagreen","forestgreen","goldenrod","dodgerblue","darkorchid","crimson"];function useColors(){return"WebkitAppearance"in document.documentElement.style||window.console&&(console.firebug||console.exception&&console.table)||navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/)&&parseInt(RegExp.$1,10)>=31}exports.formatters.j=function(v){return JSON.stringify(v)};function formatArgs(){var args=arguments;var useColors=this.useColors;args[0]=(useColors?"%c":"")+this.namespace+(useColors?" %c":" ")+args[0]+(useColors?"%c ":" ")+"+"+exports.humanize(this.diff);if(!useColors)return args;var c="color: "+this.color;args=[args[0],c,"color: inherit"].concat(Array.prototype.slice.call(args,1));var index=0;var lastC=0;args[0].replace(/%[a-z%]/g,function(match){if("%%"===match)return;index++;if("%c"===match){lastC=index}});args.splice(lastC,0,c);return args}function log(){return"object"==typeof console&&"function"==typeof console.log&&Function.prototype.apply.call(console.log,console,arguments)}function save(namespaces){try{if(null==namespaces){localStorage.removeItem("debug")}else{localStorage.debug=namespaces}}catch(e){}}function load(){var r;try{r=localStorage.debug}catch(e){}return r}exports.enable(load())},{"./debug":50}],50:[function(require,module,exports){exports=module.exports=debug;exports.coerce=coerce;exports.disable=disable;exports.enable=enable;exports.enabled=enabled;exports.humanize=require("ms");exports.names=[];exports.skips=[];exports.formatters={};var prevColor=0;var prevTime;function selectColor(){return exports.colors[prevColor++%exports.colors.length]}function debug(namespace){function disabled(){}disabled.enabled=false;function enabled(){var self=enabled;var curr=+new Date;var ms=curr-(prevTime||curr);self.diff=ms;self.prev=prevTime;self.curr=curr;prevTime=curr;if(null==self.useColors)self.useColors=exports.useColors();if(null==self.color&&self.useColors)self.color=selectColor();var args=Array.prototype.slice.call(arguments);args[0]=exports.coerce(args[0]);if("string"!==typeof args[0]){args=["%o"].concat(args)}var index=0;args[0]=args[0].replace(/%([a-z%])/g,function(match,format){if(match==="%%")return match;index++;var formatter=exports.formatters[format];if("function"===typeof formatter){var val=args[index];match=formatter.call(self,val);args.splice(index,1);index--}return match});if("function"===typeof exports.formatArgs){args=exports.formatArgs.apply(self,args)}var logFn=enabled.log||exports.log||console.log.bind(console);logFn.apply(self,args)}enabled.enabled=true;var fn=exports.enabled(namespace)?enabled:disabled;fn.namespace=namespace;return fn}function enable(namespaces){exports.save(namespaces);var split=(namespaces||"").split(/[\s,]+/);var len=split.length;for(var i=0;i<len;i++){if(!split[i])continue;namespaces=split[i].replace(/\*/g,".*?");if(namespaces[0]==="-"){exports.skips.push(new RegExp("^"+namespaces.substr(1)+"$"))}else{exports.names.push(new RegExp("^"+namespaces+"$"))}}}function disable(){exports.enable("")}function enabled(name){var i,len;for(i=0,len=exports.skips.length;i<len;i++){if(exports.skips[i].test(name)){return false}}for(i=0,len=exports.names.length;i<len;i++){if(exports.names[i].test(name)){return true}}return false}function coerce(val){if(val instanceof Error)return val.stack||val.message;return val}},{ms:51}],51:[function(require,module,exports){var s=1e3;var m=s*60;var h=m*60;var d=h*24;var y=d*365.25;module.exports=function(val,options){options=options||{};if("string"==typeof val)return parse(val);return options.long?long(val):short(val)};function parse(str){var match=/^((?:\d+)?\.?\d+) *(ms|seconds?|s|minutes?|m|hours?|h|days?|d|years?|y)?$/i.exec(str);if(!match)return;var n=parseFloat(match[1]);var type=(match[2]||"ms").toLowerCase();switch(type){case"years":case"year":case"y":return n*y;case"days":case"day":case"d":return n*d;case"hours":case"hour":case"h":return n*h;case"minutes":case"minute":case"m":return n*m;case"seconds":case"second":case"s":return n*s;case"ms":return n}}function short(ms){if(ms>=d)return Math.round(ms/d)+"d";if(ms>=h)return Math.round(ms/h)+"h";if(ms>=m)return Math.round(ms/m)+"m";if(ms>=s)return Math.round(ms/s)+"s";return ms+"ms"}function long(ms){return plural(ms,d,"day")||plural(ms,h,"hour")||plural(ms,m,"minute")||plural(ms,s,"second")||ms+" ms"}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"}},{}],52:[function(require,module,exports){var wrappy=require("wrappy");module.exports=wrappy(dezalgo);var asap=require("asap");function dezalgo(cb){var sync=true;asap(function(){sync=false});return function zalgoSafe(){var args=arguments;var me=this;if(sync)asap(function(){cb.apply(me,args)});else cb.apply(me,args)}}},{asap:53,wrappy:54}],53:[function(require,module,exports){(function(process){var head={task:void 0,next:null};var tail=head;var flushing=false;var requestFlush=void 0;var isNodeJS=false;function flush(){while(head.next){head=head.next;var task=head.task;head.task=void 0;var domain=head.domain;if(domain){head.domain=void 0;domain.enter()}try{task()}catch(e){if(isNodeJS){if(domain){domain.exit()}setTimeout(flush,0);if(domain){domain.enter()}throw e}else{setTimeout(function(){throw e},0)}}if(domain){domain.exit()}}flushing=false}if(typeof process!=="undefined"&&process.nextTick){isNodeJS=true;requestFlush=function(){process.nextTick(flush)}}else if(typeof setImmediate==="function"){if(typeof window!=="undefined"){requestFlush=setImmediate.bind(window,flush)}else{requestFlush=function(){setImmediate(flush)}}}else if(typeof MessageChannel!=="undefined"){var channel=new MessageChannel;channel.port1.onmessage=flush;requestFlush=function(){channel.port2.postMessage(0)}}else{requestFlush=function(){setTimeout(flush,0)}}function asap(task){tail=tail.next={task:task,domain:isNodeJS&&process.domain,next:null};if(!flushing){flushing=true;requestFlush()}}module.exports=asap}).call(this,require("_process"))},{_process:13}],54:[function(require,module,exports){module.exports=wrappy;function wrappy(fn,cb){if(fn&&cb)return wrappy(fn)(cb);if(typeof fn!=="function")throw new TypeError("need wrapper function");Object.keys(fn).forEach(function(k){wrapper[k]=fn[k]});return wrapper;function wrapper(){var args=new Array(arguments.length);for(var i=0;i<args.length;i++){args[i]=arguments[i]}var ret=fn.apply(this,args);var cb=args[args.length-1];if(typeof ret==="function"&&ret!==cb){Object.keys(cb).forEach(function(k){ret[k]=cb[k]})}return ret}}},{}],55:[function(require,module,exports){var once=require("once");var noop=function(){};var isRequest=function(stream){return stream.setHeader&&typeof stream.abort==="function"};var isChildProcess=function(stream){return stream.stdio&&Array.isArray(stream.stdio)&&stream.stdio.length===3};var eos=function(stream,opts,callback){if(typeof opts==="function")return eos(stream,null,opts);if(!opts)opts={};callback=once(callback||noop);var ws=stream._writableState;var rs=stream._readableState;var readable=opts.readable||opts.readable!==false&&stream.readable;var writable=opts.writable||opts.writable!==false&&stream.writable;var onlegacyfinish=function(){if(!stream.writable)onfinish()};var onfinish=function(){writable=false;if(!readable)callback()};var onend=function(){readable=false;if(!writable)callback()};var onexit=function(exitCode){callback(exitCode?new Error("exited with error code: "+exitCode):null)};var onclose=function(){if(readable&&!(rs&&rs.ended))return callback(new Error("premature close"));if(writable&&!(ws&&ws.ended))return callback(new Error("premature close"))};var onrequest=function(){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&&!ws){stream.on("end",onlegacyfinish);stream.on("close",onlegacyfinish)}if(isChildProcess(stream))stream.on("exit",onexit);stream.on("end",onend);stream.on("finish",onfinish);if(opts.error!==false)stream.on("error",callback);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("exit",onexit);stream.removeListener("end",onend);stream.removeListener("error",callback);stream.removeListener("close",onclose)}};module.exports=eos},{once:64}],56:[function(require,module,exports){module.exports=function(src){var objs=[].slice.call(arguments,1),obj;for(var i=0,len=objs.length;i<len;i++){obj=objs[i];for(var prop in obj){src[prop]=obj[prop]}}return src}},{}],57:[function(require,module,exports){(function(Buffer){module.exports=function(arr){if(typeof Buffer._augment==="function"&&Buffer.TYPED_ARRAY_SUPPORT){return Buffer._augment(arr)}else{return new Buffer(arr)}}}).call(this,require("buffer").Buffer)},{buffer:6}],58:[function(require,module,exports){"use strict";var Readable=require("stream").Readable;var util=require("util");var reExtension=/^.*\.(\w+)$/;var extend=require("extend.js");var toBuffer=require("typedarray-to-buffer");function FileReadStream(file,opts){if(!(this instanceof FileReadStream)){return new FileReadStream(file,opts)}opts=opts||{};Readable.call(this,extend({objectMode:true},opts));this._offset=0;this._eof=false;this._metasent=!opts.meta;this._metadata={name:file.name,size:file.size,extension:file.name.replace(reExtension,"$1")};if(opts.mime&&typeof opts.mime.lookup=="function"){this._metadata.type=opts.mime.lookup(this._metadata.extension)}this.reader=new FileReader;this.reader.onprogress=this._handleProgress.bind(this);this.reader.onload=this._handleLoad.bind(this);this.reader.readAsArrayBuffer(file)}util.inherits(FileReadStream,Readable);module.exports=FileReadStream;FileReadStream.prototype._read=function(bytes){var stream=this;var reader=this.reader;function checkBytes(){var startOffset=stream._offset;var endOffset=stream._offset+bytes;var availableBytes=reader.result&&reader.result.byteLength;var done=reader.readyState===2&&endOffset>availableBytes;var chunk;if(availableBytes&&(done||availableBytes>endOffset)){chunk=toBuffer(new Uint8Array(reader.result,startOffset,Math.min(bytes,reader.result.byteLength-startOffset)));stream._offset=startOffset+chunk.length;stream._eof=chunk.length===0;return stream.push(chunk.length>0?chunk:null)}stream.once("readable",checkBytes)}if(!this._metasent){this._metasent=true;return this.push("meta|"+JSON.stringify(this._metadata))}checkBytes()};FileReadStream.prototype._handleLoad=function(evt){this.emit("readable")};FileReadStream.prototype._handleProgress=function(evt){this.emit("readable")}},{"extend.js":56,stream:30,"typedarray-to-buffer":57,util:33}],59:[function(require,module,exports){(function(process){"use strict";var isNode=typeof process==="object"&&typeof process.versions==="object"&&process.versions.node&&process.__atom_type!=="renderer";var shared,create,crypto;if(isNode){var nodeRequire=require;crypto=nodeRequire("crypto");create=createNode}else{shared=new Uint32Array(80);create=createJs}module.exports=function sha1(buffer){if(buffer===undefined)return create(false);var shasum=create(true);shasum.update(buffer);return shasum.digest()};function createNode(){var shasum=crypto.createHash("sha1");return{update:function(buffer){return shasum.update(buffer)},digest:function(){return shasum.digest("hex")}}}function createJs(sync){var h0=1732584193;var h1=4023233417;var h2=2562383102;var h3=271733878;var h4=3285377520;var block,offset=0,shift=24;var totalLength=0;if(sync)block=shared;else block=new Uint32Array(80);return{update:update,digest:digest};function update(chunk){if(typeof chunk==="string")return updateString(chunk);var length=chunk.length;totalLength+=length*8;for(var i=0;i<length;i++){write(chunk[i])}}function updateString(string){var length=string.length;totalLength+=length*8;for(var i=0;i<length;i++){write(string.charCodeAt(i))}}function write(byte){block[offset]|=(byte&255)<<shift;if(shift){shift-=8}else{offset++;shift=24}if(offset===16)processBlock()}function digest(){write(128);if(offset>14||offset===14&&shift<24){processBlock()}offset=14;shift=24;write(0);write(0);write(totalLength>0xffffffffff?totalLength/1099511627776:0);write(totalLength>4294967295?totalLength/4294967296:0);for(var s=24;s>=0;s-=8){write(totalLength>>s)}return toHex(h0)+toHex(h1)+toHex(h2)+toHex(h3)+toHex(h4)}function processBlock(){for(var i=16;i<80;i++){var w=block[i-3]^block[i-8]^block[i-14]^block[i-16];block[i]=w<<1|w>>>31}var a=h0;var b=h1;var c=h2;var d=h3;var e=h4;var f,k;for(i=0;i<80;i++){if(i<20){f=d^b&(c^d);k=1518500249}else if(i<40){f=b^c^d;k=1859775393}else if(i<60){f=b&c|d&(b|c);k=2400959708}else{f=b^c^d;k=3395469782}var temp=(a<<5|a>>>27)+f+e+k+(block[i]|0);e=d;d=c;c=b<<30|b>>>2;b=a;a=temp}h0=h0+a|0;h1=h1+b|0;h2=h2+c|0;h3=h3+d|0;h4=h4+e|0;offset=0;for(i=0;i<16;i++){block[i]=0}}function toHex(word){var hex="";for(var i=28;i>=0;i-=4){hex+=(word>>i&15).toString(16)}return hex}}}).call(this,require("_process"))},{_process:13}],60:[function(require,module,exports){var hat=module.exports=function(bits,base){if(!base)base=16;if(bits===undefined)bits=128;if(bits<=0)return"0";var digits=Math.log(Math.pow(2,bits))/Math.log(base);for(var i=2;digits===Infinity;i*=2){digits=Math.log(Math.pow(2,bits/i))/Math.log(base)*i}var rem=digits-Math.floor(digits);var res="";for(var i=0;i<Math.floor(digits);i++){var x=Math.floor(Math.random()*base).toString(base);res=x+res}if(rem){var b=Math.pow(base,rem);var x=Math.floor(Math.random()*b).toString(base);
res=x+res}var parsed=parseInt(res,base);if(parsed!==Infinity&&parsed>=Math.pow(2,bits)){return hat(bits,base)}else return res};hat.rack=function(bits,base,expandBy){var fn=function(data){var iters=0;do{if(iters++>10){if(expandBy)bits+=expandBy;else throw new Error("too many ID collisions, use more bits")}var id=hat(bits,base)}while(Object.hasOwnProperty.call(hats,id));hats[id]=data;return id};var hats=fn.hats={};fn.get=function(id){return fn.hats[id]};fn.set=function(id,value){fn.hats[id]=value;return fn};fn.bits=bits||128;fn.base=base||16;return fn}},{}],61:[function(require,module,exports){module.exports=require(10)},{}],62:[function(require,module,exports){module.exports=MultiStream;var inherits=require("inherits");var stream=require("stream");inherits(MultiStream,stream.Readable);function MultiStream(streams,opts){if(!(this instanceof MultiStream))return new MultiStream(streams,opts);stream.Readable.call(this,opts);this.destroyed=false;this._drained=false;this._forwarding=false;this._current=null;this._queue=streams.map(toStreams2);this._next()}MultiStream.obj=function(streams){return new MultiStream(streams,{objectMode:true,highWaterMark:16})};MultiStream.prototype._read=function(){this._drained=true;this._forward()};MultiStream.prototype._forward=function(){if(this._forwarding||!this._drained)return;this._forwarding=true;var chunk;while((chunk=this._current.read())!==null){this._drained=this.push(chunk)}this._forwarding=false};MultiStream.prototype.destroy=function(err){if(this.destroyed)return;this.destroyed=true;if(this._current&&this._current.destroy)this._current.destroy();this._queue.forEach(function(stream){if(stream.destroy)stream.destroy()});if(err)this.emit("error",err);this.emit("close")};MultiStream.prototype._next=function(){var self=this;var stream=this._queue.shift();if(typeof stream==="function")stream=toStreams2(stream());if(!stream){this.push(null);return}this._current=stream;stream.on("readable",onReadable);stream.on("end",onEnd);stream.on("error",onError);stream.on("close",onClose);function onReadable(){self._forward()}function onClose(){if(!stream._readableState.ended){self.destroy()}}function onEnd(){self._current=null;stream.removeListener("readable",onReadable);stream.removeListener("end",onEnd);stream.removeListener("error",onError);stream.removeListener("close",onClose);self._next()}function onError(err){self.destroy(err)}};function toStreams2(s){if(!s||typeof s==="function"||s._readableState)return s;var wrap=(new stream.Readable).wrap(s);if(s.destroy){wrap.destroy=s.destroy.bind(s)}return wrap}},{inherits:61,stream:30}],63:[function(require,module,exports){module.exports=require(54)},{}],64:[function(require,module,exports){var wrappy=require("wrappy");module.exports=wrappy(once);once.proto=once(function(){Object.defineProperty(Function.prototype,"once",{value:function(){return once(this)},configurable:true})});function once(fn){var f=function(){if(f.called)return f.value;f.called=true;return f.value=fn.apply(this,arguments)};f.called=false;return f}},{wrappy:63}],65:[function(require,module,exports){(function(Buffer){var magnet=require("magnet-uri");var parseTorrentFile=require("parse-torrent-file");module.exports=function parseTorrent(torrentId){if(typeof torrentId==="string"&&/magnet:/.test(torrentId)){return magnet(torrentId)}else if(typeof torrentId==="string"&&(torrentId.length===40||torrentId.length===32)){var info=magnet("magnet:?xt=urn:btih:"+torrentId);if(info)return{infoHash:info.infoHash};else return null}else if(Buffer.isBuffer(torrentId)&&torrentId.length===20){return{infoHash:torrentId.toString("hex")}}else if(Buffer.isBuffer(torrentId)){try{return parseTorrentFile(torrentId)}catch(err){return null}}else if(torrentId&&torrentId.infoHash){return torrentId}else{return null}};module.exports.toBuffer=parseTorrentFile.toBuffer}).call(this,require("buffer").Buffer)},{buffer:6,"magnet-uri":66,"parse-torrent-file":69}],66:[function(require,module,exports){(function(Buffer){var base32=require("thirty-two");module.exports=function(uri){var result={};var data=uri.split("magnet:?")[1];if(!data||data.length===0)return result;var params=data.split("&");params.forEach(function(param){var keyval=param.split("=");if(keyval.length!==2)return;var key=keyval[0];var val=keyval[1];if(key==="dn")val=decodeURIComponent(val).replace(/\+/g," ");if(key==="tr")val=decodeURIComponent(val);if(key==="kt")val=decodeURIComponent(val).split("+");if(result[key]){if(Array.isArray(result[key])){result[key].push(val)}else{var old=result[key];result[key]=[old,val]}}else{result[key]=val}});var m;if(result.xt&&(m=result.xt.match(/^urn:btih:(.{40})/))){result.infoHash=new Buffer(m[1],"hex").toString("hex")}else if(result.xt&&(m=result.xt.match(/^urn:btih:(.{32})/))){var decodedStr=base32.decode(m[1]);result.infoHash=new Buffer(decodedStr,"binary").toString("hex")}if(result.dn)result.name=result.dn;if(result.kt)result.keywords=result.kt;if(typeof result.tr==="string")result.announce=[result.tr];else if(Array.isArray(result.tr))result.announce=result.tr;return result}}).call(this,require("buffer").Buffer)},{buffer:6,"thirty-two":67}],67:[function(require,module,exports){var base32=require("./thirty-two");exports.encode=base32.encode;exports.decode=base32.decode},{"./thirty-two":68}],68:[function(require,module,exports){(function(Buffer){var charTable="ABCDEFGHIJKLMNOPQRSTUVWXYZ234567";var byteTable=[255,255,26,27,28,29,30,31,255,255,255,255,255,255,255,255,255,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,255,255,255,255,255,255,0,1,2,3,4,5,6,7,8,9,10,11,12,13,14,15,16,17,18,19,20,21,22,23,24,25,255,255,255,255,255];function quintetCount(buff){var quintets=Math.floor(buff.length/5);return buff.length%5==0?quintets:quintets+1}exports.encode=function(plain){var i=0;var j=0;var shiftIndex=0;var digit=0;var encoded=new Buffer(quintetCount(plain)*8);if(!Buffer.isBuffer(plain)){plain=new Buffer(plain)}while(i<plain.length){var current=plain[i];if(shiftIndex>3){digit=current&255>>shiftIndex;shiftIndex=(shiftIndex+5)%8;digit=digit<<shiftIndex|(i+1<plain.length?plain[i+1]:0)>>8-shiftIndex;i++}else{digit=current>>8-(shiftIndex+5)&31;shiftIndex=(shiftIndex+5)%8;if(shiftIndex==0)i++}encoded[j]=charTable.charCodeAt(digit);j++}for(i=j;i<encoded.length;i++)encoded[i]=61;return encoded};exports.decode=function(encoded){var shiftIndex=0;var plainDigit=0;var plainChar;var plainPos=0;if(!Buffer.isBuffer(encoded)){encoded=new Buffer(encoded)}var decoded=new Buffer(Math.ceil(encoded.length*5/8));for(var i=0;i<encoded.length;i++){if(encoded[i]==61){break}var encodedByte=encoded[i]-48;if(encodedByte<byteTable.length){plainDigit=byteTable[encodedByte];if(shiftIndex<=3){shiftIndex=(shiftIndex+5)%8;if(shiftIndex==0){plainChar|=plainDigit;decoded[plainPos]=plainChar;plainPos++;plainChar=0}else{plainChar|=255&plainDigit<<8-shiftIndex}}else{shiftIndex=(shiftIndex+5)%8;plainChar|=255&plainDigit>>>shiftIndex;decoded[plainPos]=plainChar;plainPos++;plainChar=255&plainDigit<<8-shiftIndex}}else{throw new Error("Invalid input - it is not base32 encoded string")}}return decoded.slice(0,plainPos)}}).call(this,require("buffer").Buffer)},{buffer:6}],69:[function(require,module,exports){(function(Buffer){module.exports=parseTorrent;module.exports.toBuffer=toBuffer;var bencode=require("bencode");var path=require("path");var sha1=require("git-sha1");function parseTorrent(torrent){if(Buffer.isBuffer(torrent)){torrent=bencode.decode(torrent)}ensure(torrent.info,"info");ensure(torrent.info.name,"info.name");ensure(torrent.info["piece length"],"info['piece length']");ensure(torrent.info.pieces,"info.pieces");if(torrent.info.files){torrent.info.files.forEach(function(file){ensure(typeof file.length==="number","info.files[0].length");ensure(file.path,"info.files[0].path")})}else{ensure(torrent.info.length,"info.length")}var result={};result.info=torrent.info;result.infoBuffer=bencode.encode(torrent.info);result.infoHash=sha1(result.infoBuffer);result.name=torrent.info.name.toString();result.private=!!torrent.info.private;if(torrent["creation date"])result.created=new Date(torrent["creation date"]*1e3);if(Buffer.isBuffer(torrent.comment))result.comment=torrent.comment.toString();var announce=torrent["announce-list"];if(!announce){if(torrent.announce){announce=[[torrent.announce]]}else{announce=[]}}result.announceList=announce.map(function(urls){return urls.map(function(url){return url.toString()})});result.announce=[].concat.apply([],result.announceList);result.urlList=(torrent["url-list"]||[]).map(function(url){return url.toString()});var files=torrent.info.files||[torrent.info];result.files=files.map(function(file,i){var parts=[].concat(file.name||result.name,file.path||[]).map(function(p){return p.toString()});return{path:path.join.apply(null,[path.sep].concat(parts)).slice(1),name:parts[parts.length-1],length:file.length,offset:files.slice(0,i).reduce(sumLength,0)}});result.length=files.reduce(sumLength,0);var lastFile=result.files[result.files.length-1];result.pieceLength=torrent.info["piece length"];result.lastPieceLength=(lastFile.offset+lastFile.length)%result.pieceLength||result.pieceLength;result.pieces=splitPieces(torrent.info.pieces);return result}function toBuffer(parsed){var torrent={info:parsed.info};if(parsed.announce&&parsed.announce[0]){torrent.announce=parsed.announce[0]}if(parsed.announceList){torrent["announce-list"]=parsed.announceList.map(function(urls){return urls.map(function(url){url=new Buffer(url,"utf8");if(!torrent.announce){torrent.announce=url}return url})})}if(parsed.created){torrent["creation date"]=parsed.created.getTime()/1e3|0}return bencode.encode(torrent)}function sumLength(sum,file){return sum+file.length}function splitPieces(buf){var pieces=[];for(var i=0;i<buf.length;i+=20){pieces.push(buf.slice(i,i+20).toString("hex"))}return pieces}function ensure(bool,fieldName){if(!bool)throw new Error("Torrent is missing required field: "+fieldName)}}).call(this,require("buffer").Buffer)},{bencode:70,buffer:6,"git-sha1":59,path:12}],70:[function(require,module,exports){module.exports=require(43)},{"./lib/decode":71,"./lib/encode":72}],71:[function(require,module,exports){module.exports=require(44)},{buffer:6}],72:[function(require,module,exports){module.exports=require(45)},{buffer:6}],73:[function(require,module,exports){module.exports=reemit;module.exports.filter=filter;var EventEmitter=require("events").EventEmitter;function reemit(source,target,events){if(!Array.isArray(events))events=[events];events.forEach(function(event){source.on(event,function(){var args=[].slice.call(arguments);args.unshift(event);target.emit.apply(target,args)})})}function filter(source,events){var emitter=new EventEmitter;reemit(source,emitter,events);return emitter}},{events:9}],74:[function(require,module,exports){module.exports=function(tasks,cb){var results,pending,keys;if(Array.isArray(tasks)){results=[];pending=tasks.length}else{keys=Object.keys(tasks);results={};pending=keys.length}function done(i,err,result){results[i]=result;if(--pending===0||err){cb&&cb(err,results);cb=null}}if(!pending){cb&&cb(null,results);cb=null}else if(keys){keys.forEach(function(key){tasks[key](done.bind(undefined,key))})}else{tasks.forEach(function(task,i){task(done.bind(undefined,i))})}}},{}],75:[function(require,module,exports){var tick=1;var maxTick=65535;var resolution=4;var inc=function(){tick=tick+1&maxTick};var timer=setInterval(inc,1e3/resolution|0);if(timer.unref)timer.unref();module.exports=function(seconds){var size=resolution*(seconds||5);var buffer=[0];var pointer=1;var last=tick-1&maxTick;return function(delta){var dist=tick-last&maxTick;if(dist>size)dist=size;last=tick;while(dist--){if(pointer===size)pointer=0;buffer[pointer]=buffer[pointer===0?size-1:pointer-1];pointer++}if(delta)buffer[pointer-1]+=delta;var top=buffer[pointer-1];var btm=buffer.length<size?0:buffer[pointer===size?0:pointer];return buffer.length<resolution?top:(top-btm)*resolution/buffer.length}}},{}],76:[function(require,module,exports){(function(process){module.exports=Discovery;var debug=require("debug")("torrent-discovery");var DHT=require("bittorrent-dht/client");var EventEmitter=require("events").EventEmitter;var extend=require("extend.js");var inherits=require("inherits");var reemit=require("re-emitter");var Tracker=require("bittorrent-tracker/client");inherits(Discovery,EventEmitter);function Discovery(opts){var self=this;if(!(self instanceof Discovery))return new Discovery(opts);EventEmitter.call(self);if(!opts)opts={};self._performedDHTLookup=false;extend(self,{announce:[],dht:typeof DHT==="function",externalDHT:false,tracker:true,port:null},opts);if(!self.peerId)throw new Error("peerId required");if(!self.port&&!process.browser)throw new Error("port required");self._createDHT(opts.dhtPort)}Discovery.prototype.setTorrent=function(torrent){var self=this;if(self.torrent)return;if(torrent&&torrent.infoHash){self.torrent=torrent;self.infoHash=torrent.infoHash}else{if(self.infoHash)return;self.infoHash=torrent}debug("setTorrent %s",torrent);if(self.tracker&&self.tracker!==true)self.tracker.torrentLength=torrent.length;else self._createTracker();if(self.dht){if(self.dht.ready)self._dhtLookupAndAnnounce();else self.dht.on("ready",self._dhtLookupAndAnnounce.bind(self))}};Discovery.prototype.stop=function(cb){var self=this;if(self.tracker&&self.tracker.stop)self.tracker.stop();if(!self.externalDHT&&self.dht&&self.dht.destroy)self.dht.destroy(cb);else process.nextTick(function(){cb(null)})};Discovery.prototype._createDHT=function(port){var self=this;if(!self.dht)return;if(self.dht)self.externalDHT=true;else self.dht=new DHT;reemit(self.dht,self,["peer","error","warning"]);if(!self.externalDHT)self.dht.listen(port)};Discovery.prototype._createTracker=function(){var self=this;if(!self.tracker)return;var torrent=self.torrent||{infoHash:self.infoHash,announce:self.announce};self.tracker=process.browser?new Tracker(self.peerId,torrent):new Tracker(self.peerId,self.port,torrent);reemit(self.tracker,self,["peer","warning","error"]);self.tracker.start()};Discovery.prototype._dhtLookupAndAnnounce=function(){var self=this;if(self._performedDHTLookup)return;self._performedDHTLookup=true;debug("lookup");self.dht.lookup(self.infoHash,function(err){if(err||!self.port)return;debug("dhtAnnounce");self.dht.announce(self.infoHash,self.port,function(){self.emit("dhtAnnounce")})})}}).call(this,require("_process"))},{_process:13,"bittorrent-dht/client":5,"bittorrent-tracker/client":77,debug:49,events:9,"extend.js":56,inherits:61,"re-emitter":73}],77:[function(require,module,exports){(function(Buffer){module.exports=Client;var debug=require("debug")("webtorrent-tracker");var EventEmitter=require("events").EventEmitter;var extend=require("extend.js");var hat=require("hat");var inherits=require("inherits");var Peer=require("simple-peer");var Socket=require("simple-websocket");var DEFAULT_NUM_WANT=15;inherits(Client,EventEmitter);var sockets={};function Client(peerId,torrent,opts){var self=this;if(!(self instanceof Client))return new Client(peerId,torrent,opts);EventEmitter.call(self);self._opts=opts||{};self._peerId=Buffer.isBuffer(peerId)?peerId:new Buffer(peerId,"utf8");self._infoHash=Buffer.isBuffer(torrent.infoHash)?torrent.infoHash:new Buffer(torrent.infoHash,"hex");self.torrentLength=torrent.length;self._numWant=self._opts.numWant||DEFAULT_NUM_WANT;self._intervalMs=self._opts.interval||30*60*1e3;debug("new client %s",self._infoHash.toString("hex"));if(typeof torrent.announce==="string")torrent.announce=[torrent.announce];self._trackers=(torrent.announce||[]).filter(function(announceUrl){return announceUrl.indexOf("ws://")===0||announceUrl.indexOf("wss://")===0}).map(function(announceUrl){return new Tracker(self,announceUrl,self._opts)})}Client.prototype.start=function(opts){var self=this;self._trackers.forEach(function(tracker){tracker.start(opts)})};Client.prototype.stop=function(opts){var self=this;self._trackers.forEach(function(tracker){tracker.stop(opts)})};Client.prototype.complete=function(opts){var self=this;self._trackers.forEach(function(tracker){tracker.complete(opts)})};Client.prototype.update=function(opts){var self=this;self._trackers.forEach(function(tracker){tracker.update(opts)})};Client.prototype.setInterval=function(intervalMs){var self=this;self._intervalMs=intervalMs;self._trackers.forEach(function(tracker){tracker.setInterval(intervalMs)})};inherits(Tracker,EventEmitter);function Tracker(client,announceUrl,opts){var self=this;EventEmitter.call(self);self._opts=opts||{};self._announceUrl=announceUrl;self._peers={};debug("new tracker %s",announceUrl);self.client=client;self.ready=false;self._socket=null;self._intervalMs=self.client._intervalMs;self._interval=null}Tracker.prototype.start=function(opts){var self=this;opts=opts||{};opts.event="started";debug("sent `start` %s %s",self._announceUrl,JSON.stringify(opts));self._announce(opts);self.setInterval(self._intervalMs)};Tracker.prototype.stop=function(opts){var self=this;opts=opts||{};opts.event="stopped";debug("sent `stop` %s %s",self._announceUrl,JSON.stringify(opts));self._announce(opts);self.setInterval(0)};Tracker.prototype.complete=function(opts){var self=this;opts=opts||{};opts.event="completed";opts.downloaded=opts.downloaded||self.torrentLength||0;debug("sent `complete` %s %s",self._announceUrl,JSON.stringify(opts));self._announce(opts)};Tracker.prototype.update=function(opts){var self=this;opts=opts||{};debug("sent `update` %s %s",self._announceUrl,JSON.stringify(opts));self._announce(opts)};Tracker.prototype._init=function(onready){var self=this;if(onready)self.once("ready",onready);if(self._socket)return;if(sockets[self._announceUrl]){self._socket=sockets[self._announceUrl];self._onSocketReady()}else{self._socket=sockets[self._announceUrl]=new Socket(self._announceUrl);self._socket.on("ready",self._onSocketReady.bind(self))}self._socket.on("warning",self._onSocketWarning.bind(self));self._socket.on("error",self._onSocketWarning.bind(self));self._socket.on("message",self._onSocketMessage.bind(self))};Tracker.prototype._onSocketReady=function(){var self=this;self.ready=true;self.emit("ready")};Tracker.prototype._onSocketWarning=function(err){debug("tracker warning %s",err.message)};Tracker.prototype._onSocketMessage=function(data){var self=this;if(!(typeof data==="object"&&data!==null))return self.client.emit("warning",new Error("Invalid tracker response"));if(data.info_hash!==self.client._infoHash.toString("binary"))return;debug("received %s from %s",JSON.stringify(data),self._announceUrl);var failure=data["failure reason"];if(failure)return self.client.emit("warning",new Error(failure));var warning=data["warning message"];if(warning)self.client.emit("warning",new Error(warning));var interval=data.interval||data["min interval"];if(interval&&!self._opts.interval&&self._intervalMs!==0){self.setInterval(interval*1e3)}var trackerId=data["tracker id"];if(trackerId){self._trackerId=trackerId}if(data.complete){self.client.emit("update",{announce:self._announceUrl,complete:data.complete,incomplete:data.incomplete})}var peer;if(data.offer){peer=new Peer({trickle:false});peer.id=binaryToHex(data.peer_id);peer.once("signal",function(answer){var opts={info_hash:self.client._infoHash.toString("binary"),peer_id:self.client._peerId.toString("binary"),to_peer_id:data.peer_id};if(self._trackerId)opts.trackerid=self._trackerId;self._send(extend({answer:answer,offer_id:data.offer_id},opts))});peer.signal(data.offer);self.client.emit("peer",peer)}if(data.answer){peer=self._peers[data.offer_id];if(peer){peer.signal(data.answer);self.client.emit("peer",peer)}}};Tracker.prototype._announce=function(opts){var self=this;if(!self.ready)return self._init(self._announce.bind(self,opts));self._generateOffers(function(offers){opts=extend({uploaded:0,downloaded:0,info_hash:self.client._infoHash.toString("binary"),peer_id:self.client._peerId.toString("binary"),offers:offers},opts);if(self.client.torrentLength!=null&&opts.left==null){opts.left=self.client.torrentLength-(opts.downloaded||0)}if(self._trackerId){opts.trackerid=self._trackerId}self._send(opts)})};Tracker.prototype._send=function(opts){var self=this;debug("send %s",JSON.stringify(opts));self._socket.send(opts)};Tracker.prototype._generateOffers=function(cb){var self=this;var offers=[];debug("generating %s offers",self.client._numWant);for(var i=0;i<self.client._numWant;++i){generateOffer()}function generateOffer(){var offerId=hat(160);var peer=self._peers[offerId]=new Peer({initiator:true,trickle:false});peer.once("signal",function(offer){offers.push({offer:offer,offer_id:offerId});checkDone()})}function checkDone(){if(offers.length===self.client._numWant){debug("generated %s offers",self.client._numWant);cb(offers)}}};Tracker.prototype.setInterval=function(intervalMs){var self=this;clearInterval(self._interval);self._intervalMs=intervalMs;if(intervalMs){self._interval=setInterval(self.update.bind(self),self._intervalMs)}};function binaryToHex(id){return new Buffer(id,"binary").toString("hex")}}).call(this,require("buffer").Buffer)},{buffer:6,debug:49,events:9,"extend.js":56,hat:60,inherits:61,"simple-peer":78,"simple-websocket":81}],78:[function(require,module,exports){module.exports=Peer;var debug=require("debug")("simple-peer");var EventEmitter=require("events").EventEmitter;var extend=require("extend.js");var hat=require("hat");var inherits=require("inherits");var isTypedArray=require("is-typedarray");var once=require("once");var stream=require("stream");var toBuffer=require("typedarray-to-buffer");var RTCPeerConnection=typeof window!=="undefined"&&(window.mozRTCPeerConnection||window.RTCPeerConnection||window.webkitRTCPeerConnection);var RTCSessionDescription=typeof window!=="undefined"&&(window.mozRTCSessionDescription||window.RTCSessionDescription||window.webkitRTCSessionDescription);var RTCIceCandidate=typeof window!=="undefined"&&(window.mozRTCIceCandidate||window.RTCIceCandidate||window.webkitRTCIceCandidate);inherits(Peer,EventEmitter);function Peer(opts){if(!(this instanceof Peer))return new Peer(opts);EventEmitter.call(this);opts=extend({initiator:false,stream:false,config:Peer.config,constraints:Peer.constraints,channelName:opts&&opts.initiator?hat(160):null,trickle:true},opts);extend(this,opts);debug("new peer initiator: %s channelName: %s",this.initiator,this.channelName);this.destroyed=false;this.ready=false;this._pcReady=false;this._channelReady=false;this._dataStreams=[];this._iceComplete=false;this._pc=new RTCPeerConnection(this.config,this.constraints);this._pc.oniceconnectionstatechange=this._onIceConnectionStateChange.bind(this);this._pc.onsignalingstatechange=this._onSignalingStateChange.bind(this);this._pc.onicecandidate=this._onIceCandidate.bind(this);this._channel=null;if(this.stream)this._setupVideo(this.stream);if(this.initiator){this._setupData({channel:this._pc.createDataChannel(this.channelName)});this._pc.onnegotiationneeded=once(function(){this._pc.createOffer(function(offer){this._pc.setLocalDescription(offer);var sendOffer=function(){this.emit("signal",this._pc.localDescription||offer)}.bind(this);if(this.trickle||this._iceComplete)sendOffer();else this.once("_iceComplete",sendOffer)}.bind(this),this._onError.bind(this))}.bind(this));if(window.mozRTCPeerConnection){setTimeout(this._pc.onnegotiationneeded.bind(this._pc),0)}}else{this._pc.ondatachannel=this._setupData.bind(this)}}Peer.config={iceServers:[{url:"stun:23.21.150.121"}]};Peer.constraints={};Peer.prototype.send=function(data,cb){if(!this._channelReady)return this.once("ready",this.send.bind(this,data,cb));debug("send %s",data);if(isTypedArray.strict(data)||data instanceof ArrayBuffer||data instanceof Blob||typeof data==="string"){this._channel.send(data)}else{this._channel.send(JSON.stringify(data))}if(cb)cb(null)};Peer.prototype.signal=function(data){if(this.destroyed)return;if(typeof data==="string"){try{data=JSON.parse(data)}catch(err){data={}}}debug("signal %s",JSON.stringify(data));if(data.sdp){this._pc.setRemoteDescription(new RTCSessionDescription(data),function(){var needsAnswer=this._pc.remoteDescription.type==="offer";if(needsAnswer){this._pc.createAnswer(function(answer){this._pc.setLocalDescription(answer);var sendAnswer=function(){this.emit("signal",this._pc.localDescription||answer)}.bind(this);if(this.trickle||this._iceComplete)sendAnswer();else this.once("_iceComplete",sendAnswer)}.bind(this),this._onError.bind(this))}}.bind(this),this._onError.bind(this))}if(data.candidate){try{this._pc.addIceCandidate(new RTCIceCandidate(data.candidate))}catch(err){this.destroy(new Error("error adding candidate, "+err.message))}}if(!data.sdp&&!data.candidate)this.destroy(new Error("signal() called with invalid signal data"))};Peer.prototype.destroy=function(err,onclose){if(this.destroyed)return;debug("destroy (error: %s)",err&&err.message);this.destroyed=true;this.ready=false;if(typeof err==="function"){onclose=err;err=null}if(onclose)this.once("close",onclose);if(this._pc){try{this._pc.close()}catch(err){}this._pc.oniceconnectionstatechange=null;this._pc.onsignalingstatechange=null;this._pc.onicecandidate=null}if(this._channel){try{this._channel.close()}catch(err){}this._channel.onmessage=null;this._channel.onopen=null;this._channel.onclose=null}this._pc=null;this._channel=null;this._dataStreams.forEach(function(stream){if(err)stream.emit("error",err);if(!stream._readableState.ended)stream.push(null);if(!stream._writableState.finished)stream.end()});this._dataStreams=[];if(err)this.emit("error",err);this.emit("close")};Peer.prototype.getDataStream=function(opts){if(this.destroyed)throw new Error("peer is destroyed");var dataStream=new DataStream(extend({_peer:this},opts));this._dataStreams.push(dataStream);return dataStream};Peer.prototype._setupData=function(event){this._channel=event.channel;this.channelName=this._channel.label;this._channel.binaryType="arraybuffer";this._channel.onmessage=this._onChannelMessage.bind(this);this._channel.onopen=this._onChannelOpen.bind(this);this._channel.onclose=this._onChannelClose.bind(this)};Peer.prototype._setupVideo=function(stream){this._pc.addStream(stream);this._pc.onaddstream=this._onAddStream.bind(this)};Peer.prototype._onIceConnectionStateChange=function(){var iceGatheringState=this._pc.iceGatheringState;var iceConnectionState=this._pc.iceConnectionState;this.emit("iceConnectionStateChange",iceGatheringState,iceConnectionState);debug("iceConnectionStateChange %s %s",iceGatheringState,iceConnectionState);if(iceConnectionState==="connected"||iceConnectionState==="completed"){this._pcReady=true;this._maybeReady()}if(iceConnectionState==="disconnected"||iceConnectionState==="closed")this.destroy()};Peer.prototype._maybeReady=function(){debug("maybeReady pc %s channel %s",this._pcReady,this._channelReady);if(!this.ready&&this._pcReady&&this._channelReady){debug("ready");this.ready=true;this.emit("ready")}};Peer.prototype._onSignalingStateChange=function(){this.emit("signalingStateChange",this._pc.signalingState);debug("signalingStateChange %s",this._pc.signalingState)};Peer.prototype._onIceCandidate=function(event){if(event.candidate&&this.trickle){this.emit("signal",{candidate:event.candidate})}else if(!event.candidate){this._iceComplete=true;this.emit("_iceComplete")}};Peer.prototype._onChannelMessage=function(event){if(this.destroyed)return;var data=event.data;debug("receive %s",data);if(data instanceof ArrayBuffer){data=toBuffer(new Uint8Array(data));this.emit("message",data)}else{try{this.emit("message",JSON.parse(data))}catch(err){this.emit("message",data)}}this._dataStreams.forEach(function(stream){stream.push(data)})};Peer.prototype._onChannelOpen=function(){this._channelReady=true;this._maybeReady()};Peer.prototype._onChannelClose=function(){this._channelReady=false;this.destroy()};Peer.prototype._onAddStream=function(event){this.emit("stream",event.stream)};Peer.prototype._onError=function(err){debug("error %s",err.message);this.destroy(err)};inherits(DataStream,stream.Duplex);function DataStream(opts){stream.Duplex.call(this,opts);this._peer=opts._peer;debug("new stream")}DataStream.prototype.destroy=function(){this._peer.destroy()};DataStream.prototype._read=function(){};DataStream.prototype._write=function(chunk,encoding,cb){this._peer.send(chunk,cb)}},{debug:49,events:9,"extend.js":56,hat:60,inherits:61,"is-typedarray":79,once:64,stream:30,"typedarray-to-buffer":80}],79:[function(require,module,exports){module.exports=isTypedArray;isTypedArray.strict=isStrictTypedArray;isTypedArray.loose=isLooseTypedArray;var toString=Object.prototype.toString;var names={"[object Int8Array]":true,"[object Int16Array]":true,"[object Int32Array]":true,"[object Uint8Array]":true,"[object Uint16Array]":true,"[object Uint32Array]":true,"[object Float32Array]":true,"[object Float64Array]":true};function isTypedArray(arr){return isStrictTypedArray(arr)||isLooseTypedArray(arr)}function isStrictTypedArray(arr){return arr instanceof Int8Array||arr instanceof Int16Array||arr instanceof Int32Array||arr instanceof Uint8Array||arr instanceof Uint16Array||arr instanceof Uint32Array||arr instanceof Float32Array||arr instanceof Float64Array}function isLooseTypedArray(arr){return names[toString.call(arr)]}},{}],80:[function(require,module,exports){module.exports=require(57)},{buffer:6}],81:[function(require,module,exports){module.exports=Socket;var EventEmitter=require("events").EventEmitter;var inherits=require("inherits");var once=require("once");var RECONNECT_TIMEOUT=5e3;inherits(Socket,EventEmitter);function Socket(url,opts){if(!(this instanceof Socket))return new Socket(url,opts);EventEmitter.call(this);if(!opts)opts={};this._url=url;this._reconnect=opts.reconnect!==undefined?opts.reconnect:RECONNECT_TIMEOUT;this._init()}Socket.prototype.send=function(message){if(this._ws&&this._ws.readyState===WebSocket.OPEN){if(typeof message==="object")message=JSON.stringify(message);this._ws.send(message)}};Socket.prototype.destroy=function(onclose){if(onclose)this.once("close",onclose);try{this._ws.close()}catch(err){this._onclose()}};Socket.prototype._init=function(){this._errored=false;this._ws=new WebSocket(this._url);this._ws.onopen=this._onopen.bind(this);this._ws.onmessage=this._onmessage.bind(this);this._ws.onclose=this._onclose.bind(this);this._ws.onerror=once(this._onerror.bind(this))};Socket.prototype._onopen=function(){this.emit("ready")};Socket.prototype._onerror=function(err){this._errored=true;this.destroy();if(this._reconnect){this._timeout=setTimeout(this._init.bind(this),this._reconnect);this.emit("warning",err)}else{this.emit("error",err)}};Socket.prototype._onmessage=function(event){var message=event.data;try{message=JSON.parse(event.data)}catch(err){}this.emit("message",message)};Socket.prototype._onclose=function(){clearTimeout(this._timeout);if(this._ws){this._ws.onopen=null;this._ws.onerror=null;this._ws.onmessage=null;this._ws.onclose=null}this._ws=null;if(!this._errored)this.emit("close")}},{events:9,inherits:61,once:64}],82:[function(require,module,exports){(function(Buffer){var bencode=require("bencode");var BitField=require("bitfield");var EventEmitter=require("events").EventEmitter;var inherits=require("inherits");var sha1=require("git-sha1");var MAX_METADATA_SIZE=1e7;var BITFIELD_GROW=1e3;var PIECE_LENGTH=16*1024;module.exports=function(metadata){inherits(ut_metadata,EventEmitter);function ut_metadata(wire){EventEmitter.call(this);this._wire=wire;this._metadataComplete=false;this._metadataSize=null;this._remainingRejects=null;this._fetching=false;this._bitfield=new BitField(0,{grow:BITFIELD_GROW});if(Buffer.isBuffer(metadata)){this.setMetadata(metadata)}}ut_metadata.prototype.name="ut_metadata";ut_metadata.prototype.onHandshake=function(infoHash,peerId,extensions){this._infoHash=infoHash;this._infoHashHex=infoHash.toString("hex")};ut_metadata.prototype.onExtendedHandshake=function(handshake){if(!handshake.m||!handshake.m.ut_metadata){return this.emit("warning",new Error("Peer does not support ut_metadata"))
}if(!handshake.metadata_size){return this.emit("warning",new Error("Peer does not have metadata"))}if(handshake.metadata_size>MAX_METADATA_SIZE){return this.emit("warning",new Error("Peer gave maliciously large metadata size"))}this._metadataSize=handshake.metadata_size;this._numPieces=Math.ceil(this._metadataSize/PIECE_LENGTH);this._remainingRejects=this._numPieces*2;if(this._fetching){this._requestPieces()}};ut_metadata.prototype.onMessage=function(buf){var dict,trailer;try{var str=buf.toString();var trailerIndex=str.indexOf("ee")+2;dict=bencode.decode(str.substring(0,trailerIndex));trailer=buf.slice(trailerIndex)}catch(err){return}switch(dict.msg_type){case 0:this._onRequest(dict.piece);break;case 1:this._onData(dict.piece,trailer,dict.total_size);break;case 2:this._onReject(dict.piece);break}};ut_metadata.prototype.fetch=function(){if(this._metadataComplete){return}this._fetching=true;if(this._metadataSize){this._requestPieces()}};ut_metadata.prototype.cancel=function(){this._fetching=false};ut_metadata.prototype.setMetadata=function(metadata){if(this._metadataComplete)return true;try{var info=bencode.decode(metadata).info;if(info){metadata=bencode.encode(info)}}catch(err){}if(this._infoHashHex&&this._infoHashHex!==sha1(metadata)){return false}this.cancel();this.metadata=metadata;this._metadataComplete=true;this._metadataSize=this.metadata.length;this._wire.extendedHandshake.metadata_size=this._metadataSize;this.emit("metadata",bencode.encode({info:bencode.decode(this.metadata)}));return true};ut_metadata.prototype._send=function(dict,trailer){var buf=bencode.encode(dict);if(Buffer.isBuffer(trailer)){buf=Buffer.concat([buf,trailer])}this._wire.extended("ut_metadata",buf)};ut_metadata.prototype._request=function(piece){this._send({msg_type:0,piece:piece})};ut_metadata.prototype._data=function(piece,buf,totalSize){var msg={msg_type:1,piece:piece};if(typeof totalSize==="number"){msg.total_size=totalSize}this._send(msg,buf)};ut_metadata.prototype._reject=function(piece){this._send({msg_type:2,piece:piece})};ut_metadata.prototype._onRequest=function(piece){if(!this._metadataComplete){this._reject(piece);return}var start=piece*PIECE_LENGTH;var end=start+PIECE_LENGTH;if(end>this._metadataSize){end=this._metadataSize}var buf=this.metadata.slice(start,end);this._data(piece,buf,this._metadataSize)};ut_metadata.prototype._onData=function(piece,buf,totalSize){if(buf.length>PIECE_LENGTH){return}buf.copy(this.metadata,piece*PIECE_LENGTH);this._bitfield.set(piece);this._checkDone()};ut_metadata.prototype._onReject=function(piece){if(this._remainingRejects>0&&this._fetching){this._request(piece);this._remainingRejects-=1}else{this.emit("warning",new Error('Peer sent "reject" too much'))}};ut_metadata.prototype._requestPieces=function(){this.metadata=new Buffer(this._metadataSize);for(var piece=0;piece<this._numPieces;piece++){this._request(piece)}};ut_metadata.prototype._checkDone=function(){var done=true;for(var piece=0;piece<this._numPieces;piece++){if(!this._bitfield.get(piece)){done=false;break}}if(!done)return;var success=this.setMetadata(this.metadata);if(!success){this._failedMetadata()}};ut_metadata.prototype._failedMetadata=function(){this._bitfield=new BitField(0,{grow:BITFIELD_GROW});this._remainingRejects-=this._numPieces;if(this._remainingRejects>0){this._requestPieces()}else{this.emit("warning",new Error("Peer sent invalid metadata"))}};return ut_metadata}}).call(this,require("buffer").Buffer)},{bencode:83,bitfield:40,buffer:6,events:9,"git-sha1":59,inherits:61}],83:[function(require,module,exports){module.exports=require(43)},{"./lib/decode":84,"./lib/encode":85}],84:[function(require,module,exports){module.exports=require(44)},{buffer:6}],85:[function(require,module,exports){module.exports=require(45)},{buffer:6}],86:[function(require,module,exports){(function(Buffer){module.exports=Swarm;var debug=require("debug")("webtorrent-swarm");var EventEmitter=require("events").EventEmitter;var inherits=require("inherits");var once=require("once");var speedometer=require("speedometer");var Wire=require("bittorrent-protocol");var MAX_PEERS=30;var HANDSHAKE_TIMEOUT=25e3;function Peer(swarm,stream,id){this.swarm=swarm;this.stream=stream;this.id=id;var wire=this.wire=new Wire;this.timeout=null;this.handshaked=false;this.paused=true;var destroy=once(function(){if(this.handshaked)this.swarm.wires.splice(this.swarm.wires.indexOf(this.wire),1);this.destroy();this.swarm._drain();this.swarm._peers[this.id]=null}.bind(this));stream.once("end",destroy);stream.once("error",destroy);stream.once("close",destroy);stream.once("finish",destroy);wire.once("end",destroy);wire.once("close",destroy);wire.once("error",destroy);wire.once("finish",destroy);wire.on("handshake",this._onHandshake.bind(this));stream.pipe(wire).pipe(stream)}Peer.prototype.destroy=function(){debug("peer destroy");if(this.stream)this.stream.destroy();if(this.wire)this.wire.destroy();if(this.timeout)clearTimeout(this.timeout);this.stream=null;this.wire=null;this.timeout=null};Peer.prototype.handshake=function(){this.paused=false;this.wire.handshake(this.swarm.infoHash,this.swarm.peerId,this.swarm.handshake);debug("sent handshake i %s p %s",this.swarm.infoHashHex,this.swarm.peerIdHex);if(!this.handshaked){this.timeout=setTimeout(function(){this.destroy()}.bind(this),HANDSHAKE_TIMEOUT)}};Peer.prototype._onHandshake=function(infoHash){var infoHashHex=infoHash.toString("hex");debug("got handshake %s",infoHashHex);if(this.swarm.destroyed||infoHashHex!==this.swarm.infoHashHex)return this.destroy();this.handshaked=true;clearTimeout(this.timeout);this.wire.on("download",function(downloaded){this.swarm.downloaded+=downloaded;this.swarm.downloadSpeed(downloaded);this.swarm.emit("download",downloaded)}.bind(this));this.wire.on("upload",function(uploaded){this.swarm.uploaded+=uploaded;this.swarm.uploadSpeed(uploaded);this.swarm.emit("upload",uploaded)}.bind(this));this.swarm.wires.push(this.wire);this.swarm.emit("wire",this.wire)};inherits(Swarm,EventEmitter);function Swarm(infoHash,peerId,opts){if(!(this instanceof Swarm))return new Swarm(infoHash,peerId,opts);EventEmitter.call(this);if(!opts)opts={};this.infoHash=typeof infoHash==="string"?new Buffer(infoHash,"hex"):infoHash;this.infoHashHex=this.infoHash.toString("hex");this.peerId=typeof peerId==="string"?new Buffer(peerId,"utf8"):peerId;this.peerIdHex=this.peerId.toString("hex");debug("new swarm i %s p %s",this.infoHashHex,this.peerIdHex);this.handshake=opts.handshake;this.maxPeers=opts.maxPeers||MAX_PEERS;this.downloaded=0;this.uploaded=0;this.downloadSpeed=speedometer();this.uploadSpeed=speedometer();this.wires=[];this._queue=[];this._peers={};this.paused=false;this.destroyed=false}Object.defineProperty(Swarm.prototype,"ratio",{get:function(){if(this.downloaded===0)return 0;else return this.uploaded/this.downloaded}});Object.defineProperty(Swarm.prototype,"numQueued",{get:function(){return this._queue.length}});Object.defineProperty(Swarm.prototype,"numPeers",{get:function(){return this.wires.length}});Swarm.prototype.addPeer=function(simplePeer){if(this.destroyed)return;if(this._peers[simplePeer.id])return;var stream=simplePeer.getDataStream();var peer=new Peer(this,stream,simplePeer.id);this._peers[simplePeer.id]=peer;this._queue.push(peer);this._drain()};Swarm.prototype.pause=function(){debug("pause");this.paused=true};Swarm.prototype.resume=function(){debug("resume");this.paused=false;this._drain()};Swarm.prototype.removePeer=function(peer){debug("removePeer %s",peer);this._removePeer(peer);this._drain()};Swarm.prototype._removePeer=function(peer){debug("_removePeer %s",peer);peer.destroy()};Swarm.prototype.destroy=function(onclose){if(this.destroyed)return;this.destroyed=true;if(onclose)this.once("close",onclose);debug("destroy");for(var peer in this._peers){this._removePeer(peer)}this.emit("close")};Swarm.prototype._drain=function(){if(this.paused||this.destroyed||this.numPeers>=this.maxPeers)return;debug("drain %s queued %s peers %s max",this.numQueued,this.numPeers,this.maxPeers);var peer=this._queue.shift();if(peer){peer.handshake()}}}).call(this,require("buffer").Buffer)},{"bittorrent-protocol":87,buffer:6,debug:49,events:9,inherits:61,once:64,speedometer:75}],87:[function(require,module,exports){(function(Buffer){module.exports=Wire;var BitField=require("bitfield");var bencode=require("bencode");var debug=require("debug")("bittorrent-protocol");var extend=require("extend.js");var inherits=require("inherits");var speedometer=require("speedometer");var stream=require("stream");var BITFIELD_GROW=4e5;var MESSAGE_PROTOCOL=new Buffer("BitTorrent protocol");var MESSAGE_KEEP_ALIVE=new Buffer([0,0,0,0]);var MESSAGE_CHOKE=new Buffer([0,0,0,1,0]);var MESSAGE_UNCHOKE=new Buffer([0,0,0,1,1]);var MESSAGE_INTERESTED=new Buffer([0,0,0,1,2]);var MESSAGE_UNINTERESTED=new Buffer([0,0,0,1,3]);var MESSAGE_RESERVED=[0,0,0,0,0,0,0,0];var MESSAGE_PORT=[0,0,0,3,9,0,0];function Request(piece,offset,length,callback){this.piece=piece;this.offset=offset;this.length=length;this.callback=callback}inherits(Wire,stream.Duplex);function Wire(){if(!(this instanceof Wire))return new Wire;stream.Duplex.call(this);debug("new wire");this.amChoking=true;this.amInterested=false;this.peerChoking=true;this.peerInterested=false;this.peerPieces=new BitField(0,{grow:BITFIELD_GROW});this.peerExtensions={};this.requests=[];this.peerRequests=[];this.extendedMapping={};this.peerExtendedMapping={};this.extendedHandshake={};this.peerExtendedHandshake={};this._ext={};this._nextExt=1;this.uploaded=0;this.downloaded=0;this.uploadSpeed=speedometer();this.downloadSpeed=speedometer();this._keepAlive=null;this._timeout=null;this._timeoutMs=0;this.destroyed=false;this._finished=false;this._buffer=[];this._bufferSize=0;this._parser=null;this._parserSize=0;this.on("finish",this._onfinish);this._parseHandshake()}Wire.prototype.setKeepAlive=function(enable){clearInterval(this._keepAlive);if(enable===false)return;this._keepAlive=setInterval(this._push.bind(this,MESSAGE_KEEP_ALIVE),6e4)};Wire.prototype.setTimeout=function(ms){this._clearTimeout();this._timeoutMs=ms;this._updateTimeout()};Wire.prototype.destroy=function(){this.destroyed=true;this.end()};Wire.prototype.end=function(){this._onUninterested();this._onChoke();stream.Duplex.prototype.end.apply(this,arguments)};Wire.prototype.use=function(Extension){var name=Extension.name||Extension.prototype.name;if(!name){throw new Error("Extension API requires a named function, e.g. function name() {}")}var ext=this._nextExt;var handler=new Extension(this);function noop(){}if(typeof handler.onHandshake!=="function"){handler.onHandshake=noop}if(typeof handler.onExtendedHandshake!=="function"){handler.onExtendedHandshake=noop}if(typeof handler.onMessage!=="function"){handler.onMessage=noop}this.extendedMapping[ext]=name;this._ext[name]=handler;this[name]=handler;this._nextExt+=1};Wire.prototype.handshake=function(infoHash,peerId,extensions){if(typeof infoHash==="string")infoHash=new Buffer(infoHash,"hex");if(typeof peerId==="string")peerId=new Buffer(peerId,"hex");if(infoHash.length!==20||peerId.length!==20)throw new Error("infoHash and peerId MUST have length 20");var reserved=new Buffer(MESSAGE_RESERVED);reserved[5]|=16;if(extensions&&extensions.dht)reserved[7]|=1;this._push(Buffer.concat([MESSAGE_PROTOCOL,reserved,infoHash,peerId]))};Wire.prototype.choke=function(){if(this.amChoking)return;this.amChoking=true;while(this.peerRequests.length)this.peerRequests.pop();this._push(MESSAGE_CHOKE)};Wire.prototype.unchoke=function(){if(!this.amChoking)return;this.amChoking=false;this._push(MESSAGE_UNCHOKE)};Wire.prototype.interested=function(){if(this.amInterested)return;this.amInterested=true;this._push(MESSAGE_INTERESTED)};Wire.prototype.uninterested=function(){if(!this.amInterested)return;this.amInterested=false;this._push(MESSAGE_UNINTERESTED)};Wire.prototype.have=function(index){this._message(4,[index],null)};Wire.prototype.bitfield=function(bitfield){if(!Buffer.isBuffer(bitfield))bitfield=bitfield.buffer;this._message(5,[],bitfield)};Wire.prototype.request=function(index,offset,length,cb){if(!cb)cb=function(){};if(this._finished)return cb(new Error("wire is closed"));if(this.peerChoking)return cb(new Error("peer is choking"));this.requests.push(new Request(index,offset,length,cb));this._updateTimeout();this._message(6,[index,offset,length],null)};Wire.prototype.piece=function(index,offset,buffer){this.uploaded+=buffer.length;this.uploadSpeed(buffer.length);this.emit("upload",buffer.length);this._message(7,[index,offset],buffer)};Wire.prototype.cancel=function(index,offset,length){this._callback(pull(this.requests,index,offset,length),new Error("request was cancelled"),null);this._message(8,[index,offset,length],null)};Wire.prototype.port=function(port){var message=new Buffer(MESSAGE_PORT);message.writeUInt16BE(port,5);this._push(message)};Wire.prototype.extended=function(ext,obj){if(typeof ext==="string"&&this.peerExtendedMapping[ext]){ext=this.peerExtendedMapping[ext]}if(typeof ext==="number"){var ext_id=new Buffer([ext]);var buf=Buffer.isBuffer(obj)?obj:bencode.encode(obj);this._message(20,[],Buffer.concat([ext_id,buf]))}else{console.warn("Skipping extension",ext)}};Wire.prototype._onKeepAlive=function(){this.emit("keep-alive")};Wire.prototype._onHandshake=function(infoHash,peerId,extensions){this.peerId=peerId;this.peerExtensions=extensions;this.emit("handshake",infoHash,peerId,extensions);var name;for(name in this._ext){this._ext[name].onHandshake(infoHash,peerId,extensions)}if(extensions.extended){var msg=extend({},this.extendedHandshake);msg.m={};for(var ext in this.extendedMapping){name=this.extendedMapping[ext];msg.m[name]=Number(ext)}this.extended(0,bencode.encode(msg))}};Wire.prototype._onChoke=function(){this.peerChoking=true;this.emit("choke");while(this.requests.length)this._callback(this.requests.shift(),new Error("peer is choking"),null)};Wire.prototype._onUnchoke=function(){this.peerChoking=false;this.emit("unchoke")};Wire.prototype._onInterested=function(){this.peerInterested=true;this.emit("interested")};Wire.prototype._onUninterested=function(){this.peerInterested=false;this.emit("uninterested")};Wire.prototype._onHave=function(index){if(this.peerPieces.get(index)){return}this.peerPieces.set(index,true);this.emit("have",index)};Wire.prototype._onBitField=function(buffer){this.peerPieces=new BitField(buffer);this.emit("bitfield",this.peerPieces)};Wire.prototype._onRequest=function(index,offset,length){if(this.amChoking)return;var respond=function(err,buffer){if(request!==pull(this.peerRequests,index,offset,length))return;if(err)return;this.piece(index,offset,buffer)}.bind(this);var request=new Request(index,offset,length,respond);this.peerRequests.push(request);this.emit("request",index,offset,length,respond)};Wire.prototype._onPiece=function(index,offset,buffer){this._callback(pull(this.requests,index,offset,buffer.length),null,buffer);this.downloaded+=buffer.length;this.downloadSpeed(buffer.length);this.emit("download",buffer.length);this.emit("piece",index,offset,buffer)};Wire.prototype._onCancel=function(index,offset,length){pull(this.peerRequests,index,offset,length);this.emit("cancel",index,offset,length)};Wire.prototype._onPort=function(port){this.emit("port",port)};Wire.prototype._onExtended=function(ext,buf){var info,name;if(ext===0&&(info=safeBdecode(buf))){this.peerExtendedHandshake=info;if(typeof info.m==="object"){for(name in info.m){this.peerExtendedMapping[name]=Number(info.m[name].toString())}}for(name in this._ext){if(this.peerExtendedMapping[name]){this._ext[name].onExtendedHandshake(this.peerExtendedHandshake)}}this.emit("extended","handshake",this.peerExtendedHandshake)}else{if(this.extendedMapping[ext]){ext=this.extendedMapping[ext];if(this._ext[ext]){this._ext[ext].onMessage(buf)}}this.emit("extended",ext,buf)}};Wire.prototype._onTimeout=function(){this._callback(this.requests.shift(),new Error("request has timed out"),null);this.emit("timeout")};Wire.prototype._push=function(data){if(this._finished)return;return this.push(data)};Wire.prototype._write=function(data,encoding,cb){this._bufferSize+=data.length;this._buffer.push(data);while(this._bufferSize>=this._parserSize){var buffer=this._buffer.length===1?this._buffer[0]:Buffer.concat(this._buffer);this._bufferSize-=this._parserSize;this._buffer=this._bufferSize?[buffer.slice(this._parserSize)]:[];this._parser(buffer.slice(0,this._parserSize))}cb(null)};Wire.prototype._read=function(){};Wire.prototype._callback=function(request,err,buffer){if(!request)return;this._clearTimeout();if(!this.peerChoking&&!this._finished)this._updateTimeout();request.callback(err,buffer)};Wire.prototype._clearTimeout=function(){if(!this._timeout)return;clearTimeout(this._timeout);this._timeout=null};Wire.prototype._updateTimeout=function(){if(!this._timeoutMs||!this.requests.length||this._timeout)return;this._timeout=setTimeout(this._onTimeout.bind(this),this._timeoutMs)};Wire.prototype._parse=function(size,parser){this._parserSize=size;this._parser=parser};Wire.prototype._message=function(id,numbers,data){var dataLength=data?data.length:0;var buffer=new Buffer(5+4*numbers.length);buffer.writeUInt32BE(buffer.length+dataLength-4,0);buffer[4]=id;for(var i=0;i<numbers.length;i++){buffer.writeUInt32BE(numbers[i],5+4*i)}this._push(buffer);if(data)this._push(data)};Wire.prototype._onmessagelength=function(buffer){var length=buffer.readUInt32BE(0);if(length>0){this._parse(length,this._onmessage)}else{this._onKeepAlive();this._parse(4,this._onmessagelength)}};Wire.prototype._onmessage=function(buffer){this._parse(4,this._onmessagelength);switch(buffer[0]){case 0:return this._onChoke();case 1:return this._onUnchoke();case 2:return this._onInterested();case 3:return this._onUninterested();case 4:return this._onHave(buffer.readUInt32BE(1));case 5:return this._onBitField(buffer.slice(1));case 6:return this._onRequest(buffer.readUInt32BE(1),buffer.readUInt32BE(5),buffer.readUInt32BE(9));case 7:return this._onPiece(buffer.readUInt32BE(1),buffer.readUInt32BE(5),buffer.slice(9));case 8:return this._onCancel(buffer.readUInt32BE(1),buffer.readUInt32BE(5),buffer.readUInt32BE(9));case 9:return this._onPort(buffer.readUInt16BE(1));case 20:return this._onExtended(buffer.readUInt8(1),buffer.slice(2))}this.emit("unknownmessage",buffer)};Wire.prototype._parseHandshake=function(){this._parse(1,function(buffer){var pstrlen=buffer.readUInt8(0);this._parse(pstrlen+48,function(handshake){var protocol=handshake.slice(0,pstrlen);if(protocol.toString()!=="BitTorrent protocol"){debug("Error: wire not speaking BitTorrent protocol (%s)",protocol.toString());this.end();return}handshake=handshake.slice(pstrlen);this._onHandshake(handshake.slice(8,28),handshake.slice(28,48),{dht:!!(handshake[7]&1),extended:!!(handshake[5]&16)});this._parse(4,this._onmessagelength)}.bind(this))}.bind(this))};Wire.prototype._onfinish=function(){this._finished=true;this.push(null);while(this.read()){}clearInterval(this._keepAlive);this._parse(Number.MAX_VALUE,function(){});this.peerRequests=[];while(this.requests.length)this._callback(this.requests.shift(),new Error("wire was closed"),null)};function pull(requests,piece,offset,length){for(var i=0;i<requests.length;i++){var req=requests[i];if(req.piece!==piece||req.offset!==offset||req.length!==length)continue;if(i===0)requests.shift();else requests.splice(i,1);return req}return null}function safeBdecode(buf){try{return bencode.decode(buf)}catch(e){console.warn(e)}}}).call(this,require("buffer").Buffer)},{bencode:88,bitfield:40,buffer:6,debug:49,"extend.js":56,inherits:61,speedometer:75,stream:30}],88:[function(require,module,exports){module.exports=require(43)},{"./lib/decode":89,"./lib/encode":90}],89:[function(require,module,exports){module.exports=require(44)},{buffer:6}],90:[function(require,module,exports){module.exports=require(45)},{buffer:6}],webtorrent:[function(require,module,exports){(function(process,Buffer){module.exports=WebTorrent;var createTorrent=require("create-torrent");var debug=require("debug")("webtorrent");var DHT=require("bittorrent-dht/client");var EventEmitter=require("events").EventEmitter;var extend=require("extend.js");var FileReadStream=require("filestream/read");var FSStorage=require("./lib/fs-storage");var hat=require("hat");var inherits=require("inherits");var loadIPSet=require("load-ip-set");var parallel=require("run-parallel");var parseTorrent=require("parse-torrent");var speedometer=require("speedometer");var Storage=require("./lib/storage");var stream=require("stream");var Torrent=require("./lib/torrent");inherits(WebTorrent,EventEmitter);function WebTorrent(opts){var self=this;if(!(self instanceof WebTorrent))return new WebTorrent(opts);if(!opts)opts={};EventEmitter.call(self);if(!debug.enabled)self.setMaxListeners(0);self.torrentPort=opts.torrentPort||0;self.tracker=opts.tracker!==undefined?opts.tracker:true;self.torrents=[];self.downloadSpeed=speedometer();self.uploadSpeed=speedometer();self.storage=typeof opts.storage==="function"?opts.storage:opts.storage!==false&&typeof FSStorage==="function"?FSStorage:Storage;self.peerId=opts.peerId===undefined?new Buffer("-WW0001-"+hat(48),"utf8"):typeof opts.peerId==="string"?new Buffer(opts.peerId,"utf8"):opts.peerId;self.peerIdHex=self.peerId.toString("hex");self.nodeId=opts.nodeId===undefined?new Buffer(hat(160),"hex"):typeof opts.nodeId==="string"?new Buffer(opts.nodeId,"hex"):opts.nodeId;self.nodeIdHex=self.nodeId.toString("hex");if(opts.dht!==false&&typeof DHT==="function"){self.dht=new DHT(extend({nodeId:self.nodeId},opts.dht));self.dht.listen(opts.dhtPort)}debug("new webtorrent (peerId %s, nodeId %s)",self.peerIdHex,self.nodeIdHex);if(typeof loadIPSet==="function"){loadIPSet(opts.blocklist,function(err,ipSet){self.blocked=ipSet;ready()})}else process.nextTick(ready);function ready(){self.ready=true;self.emit("ready")}}Object.defineProperty(WebTorrent.prototype,"ratio",{get:function(){var self=this;var uploaded=self.torrents.reduce(function(total,torrent){return total+torrent.uploaded},0);var downloaded=self.torrents.reduce(function(total,torrent){return total+torrent.downloaded},0)||1;return uploaded/downloaded}});WebTorrent.prototype.get=function(torrentId){var self=this;var parsed=parseTorrent(torrentId);if(!parsed||!parsed.infoHash)return null;for(var i=0,len=self.torrents.length;i<len;i++){var torrent=self.torrents[i];if(torrent.infoHash===parsed.infoHash)return torrent}return null};WebTorrent.prototype.add=WebTorrent.prototype.download=function(torrentId,opts,ontorrent){var self=this;debug("add %s",torrentId);if(typeof opts==="function"){ontorrent=opts;opts={}}if(!opts)opts={};opts.client=self;opts.storage=opts.storage||self.storage;if(opts.tmp)opts.storageOpts={tmp:opts.tmp};var torrent=new Torrent(torrentId,extend({client:self},opts));self.torrents.push(torrent);function clientOnTorrent(_torrent){if(torrent.infoHash===_torrent.infoHash){ontorrent(torrent);self.removeListener("torrent",clientOnTorrent)}}if(ontorrent)self.on("torrent",clientOnTorrent);torrent.on("error",function(err){self.emit("error",err,torrent)});torrent.on("listening",function(port){self.emit("listening",port,torrent)});torrent.on("ready",function(){debug("torrent");self.emit("torrent",torrent)});return torrent};WebTorrent.prototype.seed=function(input,opts,onseed){var self=this;if(typeof opts==="function"){onseed=opts;opts={}}if(typeof FileList!=="undefined"&&input instanceof FileList)input=Array.prototype.slice.call(input);if(isBlob(input)||Buffer.isBuffer(input)){input=[input]}var streams=input.map(function(item){if(isBlob(item))return new FileReadStream(item);else if(Buffer.isBuffer(item)){var s=new stream.PassThrough;s.end(item);return s}else throw new Error("unsupported input type to `seed`")});var torrent;createTorrent(input,opts,function(err,torrentBuf){if(err)return self.emit("error",err);self.add(torrentBuf,opts,function(_torrent){torrent=_torrent;torrent.storage.load(streams,function(err){if(err)return self.emit("error",err);self.emit("seed",torrent)})})});function clientOnSeed(_torrent){if(torrent.infoHash===_torrent.infoHash){onseed(torrent);self.removeListener("seed",clientOnSeed)}}if(onseed)self.on("seed",clientOnSeed)};WebTorrent.prototype.remove=function(torrentId,cb){var self=this;var torrent=self.get(torrentId);if(!torrent)throw new Error("No torrent with id "+torrentId);debug("remove");self.torrents.splice(self.torrents.indexOf(torrent),1);torrent.destroy(cb)};WebTorrent.prototype.destroy=function(cb){var self=this;debug("destroy");var tasks=self.torrents.map(function(torrent){return function(cb){self.remove(torrent.infoHash,cb)}});if(self.dht)tasks.push(function(cb){self.dht.destroy(cb)});parallel(tasks,cb)};function isBlob(obj){return typeof Blob!=="undefined"&&obj instanceof Blob}}).call(this,require("_process"),require("buffer").Buffer)},{"./lib/fs-storage":5,"./lib/storage":36,"./lib/torrent":37,_process:13,"bittorrent-dht/client":5,buffer:6,"create-torrent":42,debug:49,events:9,"extend.js":56,"filestream/read":58,hat:60,inherits:61,"load-ip-set":5,"parse-torrent":65,"run-parallel":74,speedometer:75,stream:30}]},{},[]);require=function e(t,n,r){function s(o,u){if(!n[o]){if(!t[o]){var a=typeof require=="function"&&require;if(!u&&a)return a(o,!0);if(i)return i(o,!0);var f=new Error("Cannot find module '"+o+"'");throw f.code="MODULE_NOT_FOUND",f}var l=n[o]={exports:{}};t[o][0].call(l.exports,function(e){var n=t[o][1][e];return s(n?n:e)},l,l.exports,e,t,n,r)}return n[o].exports}var i=typeof require=="function"&&require;for(var o=0;o<r.length;o++)s(r[o]);return s}({domify:[function(require,module,exports){module.exports=parse;var div=document.createElement("div");div.innerHTML='  <link/><table></table><a href="/a">a</a><input type="checkbox"/>';var innerHTMLBug=!div.getElementsByTagName("link").length;div=undefined;var map={legend:[1,"<fieldset>","</fieldset>"],tr:[2,"<table><tbody>","</tbody></table>"],col:[2,"<table><tbody></tbody><colgroup>","</colgroup></table>"],_default:innerHTMLBug?[1,"X<div>","</div>"]:[0,"",""]};map.td=map.th=[3,"<table><tbody><tr>","</tr></tbody></table>"];map.option=map.optgroup=[1,'<select multiple="multiple">',"</select>"];map.thead=map.tbody=map.colgroup=map.caption=map.tfoot=[1,"<table>","</table>"];map.text=map.circle=map.ellipse=map.line=map.path=map.polygon=map.polyline=map.rect=[1,'<svg xmlns="http://www.w3.org/2000/svg" version="1.1">',"</svg>"];function parse(html,doc){if("string"!=typeof html)throw new TypeError("String expected");if(!doc)doc=document;var m=/<([\w:]+)/.exec(html);if(!m)return doc.createTextNode(html);html=html.replace(/^\s+|\s+$/g,"");var tag=m[1];if(tag=="body"){var el=doc.createElement("html");el.innerHTML=html;return el.removeChild(el.lastChild)}var wrap=map[tag]||map._default;var depth=wrap[0];var prefix=wrap[1];var suffix=wrap[2];var el=doc.createElement("div");el.innerHTML=prefix+html+suffix;while(depth--)el=el.lastChild;if(el.firstChild==el.lastChild){return el.removeChild(el.firstChild)}var fragment=doc.createDocumentFragment();while(el.firstChild){fragment.appendChild(el.removeChild(el.firstChild))}return fragment}},{}]},{},[]);var WebTorrent=require("webtorrent");var domify=require("domify");document.body.appendChild(domify("loading..."));var infohash="3a3cca2992987699def85776f58c3c510bc2b166";var client=new WebTorrent;function onTorrent(torrent){torrent.files[0].createReadStream().on("data",function(data){document.write(data)})}client.add({infoHash:infohash,announce:["wss://tracker.webtorrent.io"]},onTorrent);

package.json

{
  "name": "requirebin-sketch",
  "version": "1.0.0",
  "dependencies": {
    "webtorrent": "0.13.0",
    "domify": "1.3.1"
  }
}

page-head.html

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body, html { height: 100%; width: 100%; }</style>

requirebin.md

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