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e?r=a.from(e,"hex"):(r=e,e=r.toString("hex")),"string"==typeof t?o=a.from(t,"hex"):(o=t,t=o.toString("hex")),20!==r.length||20!==o.length)throw new Error("infoHash and peerId MUST have length 20");this._debug("handshake i=%s p=%s exts=%o",e,t,n);var i=a.from(x);i[5]|=16,n&&n.dht&&(i[7]|=1),this._push(a.concat([m,i,r,o])),this._handshakeSent=!0,this.peerExtensions.extended&&!this._extendedHandshakeSent&&this._sendExtendedHandshake()},r.prototype._sendExtendedHandshake=function(){var e=p(this.extendedHandshake);for(var t in e.m={},this.extendedMapping){var n=this.extendedMapping[t];e.m[n]=+t}this.extended(0,i.encode(e)),this._extendedHandshakeSent=!0},r.prototype.choke=function(){if(!this.amChoking){for(this.amChoking=!0,this._debug("choke");this.peerRequests.length;)this.peerRequests.pop();this._push(y)}},r.prototype.unchoke=function(){this.amChoking&&(this.amChoking=!1,this._debug("unchoke"),this._push(b))},r.prototype.interested=function(){this.amInterested||(this.amInterested=!0,this._debug("interested"),this._push(w))},r.prototype.uninterested=function(){this.amInterested&&(this.amInterested=!1,this._debug("uninterested"),this._push(k))},r.prototype.have=function(e){this._debug("have %d",e),this._message(4,[e],null)},r.prototype.bitfield=function(e){this._debug("bitfield"),a.isBuffer(e)||(e=e.buffer),this._message(5,[],e)},r.prototype.request=function(e,t,r,o){return o||(o=function(){}),this._finished?o(new Error("wire is closed")):this.peerChoking?o(new Error("peer is choking")):void(this._debug("request index=%d offset=%d length=%d",e,t,r),this.requests.push(new n(e,t,r,o)),this._updateTimeout(),this._message(6,[e,t,r],null))},r.prototype.piece=function(e,t,n){this._debug("piece index=%d offset=%d",e,t),this.uploaded+=n.length,this.uploadSpeed(n.length),this.emit("upload",n.length),this._message(7,[e,t],n)},r.prototype.cancel=function(e,t,n){this._debug("cancel index=%d offset=%d length=%d",e,t,n),this._callback(o(this.requests,e,t,n),new Error("request was cancelled"),null),this._message(8,[e,t,n],null)},r.prototype.port=function(e){this._debug("port %d",e);var t=a.from(v);t.writeUInt16BE(e,5),this._push(t)},r.prototype.extended=function(e,t){if(this._debug("extended ext=%s",e),"string"==typeof e&&this.peerExtendedMapping[e]&&(e=this.peerExtendedMapping[e]),"number"==typeof e){var n=a.from([e]),r=a.isBuffer(t)?t:i.encode(t);this._message(20,[],a.concat([n,r]))}else throw new Error("Unrecognized extension: "+e)},r.prototype._read=function(){},r.prototype._message=function(e,t,n){var r=n?n.length:0,o=a.allocUnsafe(5+4*t.length);o.writeUInt32BE(o.length+r-4,0),o[4]=e;for(var s=0;s<t.length;s++)o.writeUInt32BE(t[s],5+4*s);this._push(o),n&&this._push(n)},r.prototype._push=function(e){return this._finished?void 0:this.push(e)},r.prototype._onKeepAlive=function(){this._debug("got keep-alive"),this.emit("keep-alive")},r.prototype._onHandshake=function(e,t,n){var r=e.toString("hex"),o=t.toString("hex");this._debug("got handshake i=%s p=%s exts=%o",r,o,n),this.peerId=o,this.peerIdBuffer=t,this.peerExtensions=n,this.emit("handshake",r,o,n);for(var i in this._ext)this._ext[i].onHandshake(r,o,n);n.extended&&this._handshakeSent&&!this._extendedHandshakeSent&&this._sendExtendedHandshake()},r.prototype._onChoke=function(){for(this.peerChoking=!0,this._debug("got choke"),this.emit("choke");this.requests.length;)this._callback(this.requests.pop(),new Error("peer is choking"),null)},r.prototype._onUnchoke=function(){this.peerChoking=!1,this._debug("got unchoke"),this.emit("unchoke")},r.prototype._onInterested=function(){this.peerInterested=!0,this._debug("got interested"),this.emit("interested")},r.prototype._onUninterested=function(){this.peerInterested=!1,this._debug("got uninterested"),this.emit("uninterested")},r.prototype._onHave=function(e){this.peerPieces.get(e)||(this._debug("got have %d",e),this.peerPieces.set(e,!0),this.emit("have",e))},r.prototype._onBitField=function(e){this.peerPieces=new d(e),this._debug("got bitfield"),this.emit("bitfield",this.peerPieces)},r.prototype._onRequest=function(e,t,r){var i=this;if(!i.amChoking){i._debug("got request index=%d offset=%d length=%d",e,t,r);var s=function(n,s){return d===o(i.peerRequests,e,t,r)?n?i._debug("error satisfying request index=%d offset=%d length=%d (%s)",e,t,r,n.message):void i.piece(e,t,s):void 0},d=new n(e,t,r,s);i.peerRequests.push(d),i.emit("request",e,t,r,s)}},r.prototype._onPiece=function(e,t,n){this._debug("got piece index=%d offset=%d",e,t),this._callback(o(this.requests,e,t,n.length),null,n),this.downloaded+=n.length,this.downloadSpeed(n.length),this.emit("download",n.length),this.emit("piece",e,t,n)},r.prototype._onCancel=function(e,t,n){this._debug("got cancel index=%d offset=%d length=%d",e,t,n),o(this.peerRequests,e,t,n),this.emit("cancel",e,t,n)},r.prototype._onPort=function(e){this._debug("got port %d",e),this.emit("port",e)},r.prototype._onExtended=function(e,t){if(0===e){var n;try{n=i.decode(t)}catch(e){this._debug("ignoring invalid extended handshake: %s",e.message||e)}if(!n)return;this.peerExtendedHandshake=n;if("object"==typeof n.m)for(var r in n.m)this.peerExtendedMapping[r]=+n.m[r].toString();for(r in this._ext)this.peerExtendedMapping[r]&&this._ext[r].onExtendedHandshake(this.peerExtendedHandshake);this._debug("got extended handshake"),this.emit("extended","handshake",this.peerExtendedHandshake)}else this.extendedMapping[e]&&(e=this.extendedMapping[e],this._ext[e]&&this._ext[e].onMessage(t)),this._debug("got extended message ext=%s",e),this.emit("extended",e,t)},r.prototype._onTimeout=function(){this._debug("request timed out"),this._callback(this.requests.shift(),new Error("request has timed out"),null),this.emit("timeout")},r.prototype._write=function(e,t,n){for(this._bufferSize+=e.length,this._buffer.push(e);this._bufferSize>=this._parserSize;){var r=1===this._buffer.length?this._buffer[0]:a.concat(this._buffer);this._bufferSize-=this._parserSize,this._buffer=this._bufferSize?[r.slice(this._parserSize)]:[],this._parser(r.slice(0,this._parserSize))}n(null)},r.prototype._callback=function(e,t,n){e&&(this._clearTimeout(),!this.peerChoking&&!this._finished&&this._updateTimeout(),e.callback(t,n))},r.prototype._clearTimeout=function(){this._timeout&&(clearTimeout(this._timeout),this._timeout=null)},r.prototype._updateTimeout=function(){var e=this;e._timeoutMs&&e.requests.length&&!e._timeout&&(e._timeout=setTimeout(function(){e._onTimeout()},e._timeoutMs),e._timeoutUnref&&e._timeout.unref&&e._timeout.unref())},r.prototype._parse=function(e,t){this._parserSize=e,this._parser=t},r.prototype._onMessageLength=function(e){var t=e.readUInt32BE(0);0<t?this._parse(t,this._onMessage):(this._onKeepAlive(),this._parse(4,this._onMessageLength))},r.prototype._onMessage=function(e){switch(this._parse(4,this._onMessageLength),e[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(e.readUInt32BE(1));case 5:return this._onBitField(e.slice(1));case 6:return this._onRequest(e.readUInt32BE(1),e.readUInt32BE(5),e.readUInt32BE(9));case 7:return this._onPiece(e.readUInt32BE(1),e.readUInt32BE(5),e.slice(9));case 8:return this._onCancel(e.readUInt32BE(1),e.readUInt32BE(5),e.readUInt32BE(9));case 9:return this._onPort(e.readUInt16BE(1));case 20:return this._onExtended(e.readUInt8(1),e.slice(2));default:return this._debug("got unknown message"),this.emit("unknownmessage",e);}},r.prototype._parseHandshake=function(){var e=this;e._parse(1,function(t){var n=t.readUInt8(0);e._parse(n+48,function(t){var r=t.slice(0,n);return"BitTorrent protocol"===r.toString()?void(t=t.slice(n),e._onHandshake(t.slice(8,28),t.slice(28,48),{dht:!!(1&t[7]),extended:!!(16&t[5])}),e._parse(4,e._onMessageLength)):(e._debug("Error: wire not speaking BitTorrent protocol (%s)",r.toString()),void e.end())})})},r.prototype._onFinish=function(){for(this._finished=!0,this.push(null);this.read(););for(clearInterval(this._keepAliveInterval),this._parse(Number.MAX_VALUE,function(){});this.peerRequests.length;)this.peerRequests.pop();for(;this.requests.length;)this._callback(this.requests.pop(),new Error("wire was closed"),null)},r.prototype._debug=function(){var e=[].slice.call(arguments);e[0]="["+this._debugId+"] "+e[0],l.apply(null,e)}},{bencode:71,bitfield:73,debug:87,inherits:96,randombytes:125,"readable-stream":135,"safe-buffer":141,speedometer:147,"unordered-array-remove":160,xtend:174}],75:[function(e,t){(function(n){function r(e){function t(e){n.nextTick(function(){d.emit("warning",e)})}var d=this;if(!(d instanceof r))return new r(e);if(s.call(d),e||(e={}),!e.peerId)throw new Error("Option `peerId` is required");if(!e.infoHash)throw new Error("Option `infoHash` is required");if(!e.announce)throw new Error("Option `announce` is required");if(!n.browser&&!e.port)throw new Error("Option `port` is required");d.peerId="string"==typeof e.peerId?e.peerId:e.peerId.toString("hex"),d._peerIdBuffer=o.from(d.peerId,"hex"),d._peerIdBinary=d._peerIdBuffer.toString("binary"),d.infoHash="string"==typeof e.infoHash?e.infoHash:e.infoHash.toString("hex"),d._infoHashBuffer=o.from(d.infoHash,"hex"),d._infoHashBinary=d._infoHashBuffer.toString("binary"),i("new client %s",d.infoHash),d.destroyed=!1,d._port=e.port,d._getAnnounceOpts=e.getAnnounceOpts,d._rtcConfig=e.rtcConfig,d._userAgent=e.userAgent,d._wrtc="function"==typeof e.wrtc?e.wrtc():e.wrtc;var a="string"==typeof e.announce?[e.announce]:null==e.announce?[]:e.announce;a=a.map(function(e){return e=e.toString(),"/"===e[e.length-1]&&(e=e.substring(0,e.length-1)),e}),a=u(a);var l=!1!==d._wrtc&&(!!d._wrtc||c.WEBRTC_SUPPORT);d._trackers=a.map(function(e){var n=f.parse(e).protocol;return("http:"===n||"https:"===n)&&"function"==typeof g?new g(d,e):"udp:"===n&&"function"==typeof m?new m(d,e):("ws:"===n||"wss:"===n)&&l?"ws:"===n&&"undefined"!=typeof window&&"https:"===window.location.protocol?(t(new Error("Unsupported tracker protocol: "+e)),null):new _(d,e):(t(new Error("Unsupported tracker protocol: "+e)),null)}).filter(Boolean)}t.exports=r;var o=e("safe-buffer").Buffer,i=e("debug")("bittorrent-tracker:client"),s=e("events").EventEmitter,d=e("xtend"),a=e("inherits"),l=e("once"),p=e("run-parallel"),c=e("simple-peer"),u=e("uniq"),f=e("url"),h=e("./lib/common"),g=e("./lib/client/http-tracker"),m=e("./lib/client/udp-tracker"),_=e("./lib/client/websocket-tracker");a(r,s),r.scrape=function(e,t){if(t=l(t),!e.infoHash)throw new Error("Option `infoHash` is required");if(!e.announce)throw new Error("Option `announce` is required");var n=d(e,{infoHash:Array.isArray(e.infoHash)?e.infoHash[0]:e.infoHash,peerId:o.from("01234567890123456789"),port:6881}),i=new r(n);i.once("error",t),i.once("warning",t);var s=Array.isArray(e.infoHash)?e.infoHash.length:1,a={};return i.on("scrape",function(e){if(s-=1,a[e.infoHash]=e,0===s){i.destroy();var n=Object.keys(a);1===n.length?t(null,a[n[0]]):t(null,a)}}),e.infoHash=Array.isArray(e.infoHash)?e.infoHash.map(function(e){return o.from(e,"hex")}):o.from(e.infoHash,"hex"),i.scrape({infoHash:e.infoHash}),i},r.prototype.start=function(e){var t=this;i("send `start`"),e=t._defaultAnnounceOpts(e),e.event="started",t._announce(e),t._trackers.forEach(function(e){e.setInterval()})},r.prototype.stop=function(e){var t=this;i("send `stop`"),e=t._defaultAnnounceOpts(e),e.event="stopped",t._announce(e)},r.prototype.complete=function(e){var t=this;i("send `complete`"),e||(e={}),e=t._defaultAnnounceOpts(e),e.event="completed",t._announce(e)},r.prototype.update=function(e){var t=this;i("send `update`"),e=t._defaultAnnounceOpts(e),e.event&&delete e.event,t._announce(e)},r.prototype._announce=function(e){var t=this;t._trackers.forEach(function(t){t.announce(e)})},r.prototype.scrape=function(e){var t=this;i("send `scrape`"),e||(e={}),t._trackers.forEach(function(t){t.scrape(e)})},r.prototype.setInterval=function(e){var t=this;i("setInterval %d",e),t._trackers.forEach(function(t){t.setInterval(e)})},r.prototype.destroy=function(e){var t=this;if(!t.destroyed){t.destroyed=!0,i("destroy");var n=t._trackers.map(function(e){return function(t){e.destroy(t)}});p(n,e),t._trackers=[],t._getAnnounceOpts=null}},r.prototype._defaultAnnounceOpts=function(e){var t=this;return e||(e={}),null==e.numwant&&(e.numwant=h.DEFAULT_ANNOUNCE_PEERS),null==e.uploaded&&(e.uploaded=0),null==e.downloaded&&(e.downloaded=0),t._getAnnounceOpts&&(e=d(e,t._getAnnounceOpts())),e}}).call(this,e("_process"))},{"./lib/client/http-tracker":3,"./lib/client/udp-tracker":3,"./lib/client/websocket-tracker":77,"./lib/common":78,_process:15,debug:87,events:7,inherits:96,once:115,"run-parallel":139,"safe-buffer":141,"simple-peer":144,uniq:159,url:37,xtend:174}],76:[function(e,t){function n(e,t){var n=this;r.call(n),n.client=e,n.announceUrl=t,n.interval=null,n.destroyed=!1}t.exports=n;var r=e("events").EventEmitter,o=e("inherits");o(n,r),n.prototype.setInterval=function(e){var t=this;null==e&&(e=t.DEFAULT_ANNOUNCE_INTERVAL),clearInterval(t.interval),e&&(t.interval=setInterval(function(){t.announce(t.client._defaultAnnounceOpts())},e),t.interval.unref&&t.interval.unref())}},{events:7,inherits:96}],77:[function(e,t){function n(e,t){var n=this;h.call(n,e,t),s("new websocket tracker %s",t),n.peers={},n.socket=null,n.reconnecting=!1,n.retries=0,n.reconnectTimer=null,n.expectingResponse=!1,n._openSocket()}function o(){}t.exports=n;var s=e("debug")("bittorrent-tracker:websocket-tracker"),i=e("xtend"),l=e("inherits"),p=e("simple-peer"),c=e("randombytes"),u=e("simple-websocket"),f=e("../common"),h=e("./tracker"),g={};l(n,h),n.prototype.DEFAULT_ANNOUNCE_INTERVAL=30000,n.prototype.announce=function(e){var t=this;if(!(t.destroyed||t.reconnecting)){if(!t.socket.connected)return void t.socket.once("connect",function(){t.announce(e)});var n=i(e,{action:"announce",info_hash:t.client._infoHashBinary,peer_id:t.client._peerIdBinary});if(t._trackerId&&(n.trackerid=t._trackerId),"stopped"===e.event||"completed"===e.event)t._send(n);else{var r=d(e.numwant,10);t._generateOffers(r,function(e){n.numwant=r,n.offers=e,t._send(n)})}}},n.prototype.scrape=function(e){var t=this;if(!(t.destroyed||t.reconnecting)){if(!t.socket.connected)return void t.socket.once("connect",function(){t.scrape(e)});var n=Array.isArray(e.infoHash)&&0<e.infoHash.length?e.infoHash.map(function(e){return e.toString("binary")}):e.infoHash&&e.infoHash.toString("binary")||t.client._infoHashBinary;t._send({action:"scrape",info_hash:n})}},n.prototype.destroy=function(e){function t(){d&&(clearTimeout(d),d=null),s.removeListener("data",t),s.destroy(),s=null}var n=this;if(e||(e=o),n.destroyed)return e(null);for(var r in n.destroyed=!0,clearInterval(n.interval),clearTimeout(n.reconnectTimer),n.peers){var i=n.peers[r];clearTimeout(i.trackerTimeout),i.destroy()}if(n.peers=null,n.socket&&(n.socket.removeListener("connect",n._onSocketConnectBound),n.socket.removeListener("data",n._onSocketDataBound),n.socket.removeListener("close",n._onSocketCloseBound),n.socket.removeListener("error",n._onSocketErrorBound),n.socket=null),n._onSocketConnectBound=null,n._onSocketErrorBound=null,n._onSocketDataBound=null,n._onSocketCloseBound=null,g[n.announceUrl]&&(g[n.announceUrl].consumers-=1),0<g[n.announceUrl].consumers)return e();var s=g[n.announceUrl];if(delete g[n.announceUrl],s.on("error",o),s.once("close",e),!n.expectingResponse)return t();var d=setTimeout(t,f.DESTROY_TIMEOUT);s.once("data",t)},n.prototype._openSocket=function(){var e=this;e.destroyed=!1,e.peers||(e.peers={}),e._onSocketConnectBound=function(){e._onSocketConnect()},e._onSocketErrorBound=function(t){e._onSocketError(t)},e._onSocketDataBound=function(t){e._onSocketData(t)},e._onSocketCloseBound=function(){e._onSocketClose()},e.socket=g[e.announceUrl],e.socket?g[e.announceUrl].consumers+=1:(e.socket=g[e.announceUrl]=new u(e.announceUrl),e.socket.consumers=1,e.socket.once("connect",e._onSocketConnectBound)),e.socket.on("data",e._onSocketDataBound),e.socket.once("close",e._onSocketCloseBound),e.socket.once("error",e._onSocketErrorBound)},n.prototype._onSocketConnect=function(){var e=this;e.destroyed||e.reconnecting&&(e.reconnecting=!1,e.retries=0,e.announce(e.client._defaultAnnounceOpts()))},n.prototype._onSocketData=function(e){var t=this;if(!t.destroyed){t.expectingResponse=!1;try{e=JSON.parse(e)}catch(e){return void t.client.emit("warning",new Error("Invalid tracker response"))}"announce"===e.action?t._onAnnounceResponse(e):"scrape"===e.action?t._onScrapeResponse(e):t._onSocketError(new Error("invalid action in WS response: "+e.action))}},n.prototype._onAnnounceResponse=function(e){var t=this;if(e.info_hash!==t.client._infoHashBinary)return void s("ignoring websocket data from %s for %s (looking for %s: reused socket)",t.announceUrl,f.binaryToHex(e.info_hash),t.client.infoHash);if(!(e.peer_id&&e.peer_id===t.client._peerIdBinary)){s("received %s from %s for %s",JSON.stringify(e),t.announceUrl,t.client.infoHash);var n=e["failure reason"];if(n)return t.client.emit("warning",new Error(n));var r=e["warning message"];r&&t.client.emit("warning",new Error(r));var o=e.interval||e["min interval"];o&&t.setInterval(1e3*o);var i=e["tracker id"];if(i&&(t._trackerId=i),null!=e.complete){var d=Object.assign({},e,{announce:t.announceUrl,infoHash:f.binaryToHex(e.info_hash)});t.client.emit("update",d)}var a;if(e.offer&&e.peer_id&&(s("creating peer (from remote offer)"),a=t._createPeer(),a.id=f.binaryToHex(e.peer_id),a.once("signal",function(n){var r={action:"announce",info_hash:t.client._infoHashBinary,peer_id:t.client._peerIdBinary,to_peer_id:e.peer_id,answer:n,offer_id:e.offer_id};t._trackerId&&(r.trackerid=t._trackerId),t._send(r)}),a.signal(e.offer),t.client.emit("peer",a)),e.answer&&e.peer_id){var l=f.binaryToHex(e.offer_id);a=t.peers[l],a?(a.id=f.binaryToHex(e.peer_id),a.signal(e.answer),t.client.emit("peer",a),clearTimeout(a.trackerTimeout),a.trackerTimeout=null,delete t.peers[l]):s("got unexpected answer: "+JSON.stringify(e.answer))}}},n.prototype._onScrapeResponse=function(e){var t=this;e=e.files||{};var n=Object.keys(e);return 0===n.length?void t.client.emit("warning",new Error("invalid scrape response")):void n.forEach(function(n){var r=Object.assign(e[n],{announce:t.announceUrl,infoHash:f.binaryToHex(n)});t.client.emit("scrape",r)})},n.prototype._onSocketClose=function(){var e=this;e.destroyed||(e.destroy(),e._startReconnectTimer())},n.prototype._onSocketError=function(e){var t=this;t.destroyed||(t.destroy(),t.client.emit("warning",e),t._startReconnectTimer())},n.prototype._startReconnectTimer=function(){var e=this,t=r(Math.random()*30000)+d(a(2,e.retries)*15000,1800000);e.reconnecting=!0,clearTimeout(e.reconnectTimer),e.reconnectTimer=setTimeout(function(){e.retries++,e._openSocket()},t),e.reconnectTimer.unref&&e.reconnectTimer.unref(),s("reconnecting socket in %s ms",t)},n.prototype._send=function(e){var t=this;if(!t.destroyed){t.expectingResponse=!0;var n=JSON.stringify(e);s("send %s",n),t.socket.send(n)}},n.prototype._generateOffers=function(e,t){function n(){var e=c(20).toString("hex");s("creating peer (from _generateOffers)");var t=o.peers[e]=o._createPeer({initiator:!0});t.once("signal",function(t){d.push({offer:t,offer_id:f.hexToBinary(e)}),r()}),t.trackerTimeout=setTimeout(function(){s("tracker timeout: destroying peer"),t.trackerTimeout=null,delete o.peers[e],t.destroy()},50000),t.trackerTimeout.unref&&t.trackerTimeout.unref()}function r(){d.length===e&&(s("generated %s offers",e),t(d))}var o=this,d=[];s("generating %s offers",e);for(var a=0;a<e;++a)n();r()},n.prototype._createPeer=function(e){function t(e){r.client.emit("warning",new Error("Connection error: "+e.message)),o.destroy()}function n(){o.removeListener("error",t),o.removeListener("connect",n)}var r=this;e=Object.assign({trickle:!1,config:r.client._rtcConfig,wrtc:r.client._wrtc},e);var o=new p(e);return o.once("error",t),o.once("connect",n),o}},{"../common":78,"./tracker":76,debug:87,inherits:96,randombytes:125,"simple-peer":144,"simple-websocket":146,xtend:174}],78:[function(e,t,n){var r=e("safe-buffer").Buffer,o=e("xtend/mutable");n.DEFAULT_ANNOUNCE_PEERS=50,n.MAX_ANNOUNCE_PEERS=82,n.binaryToHex=function(e){return"string"!=typeof e&&(e+=""),r.from(e,"binary").toString("hex")},n.hexToBinary=function(e){return"string"!=typeof e&&(e+=""),r.from(e,"hex").toString("binary")};var i=e("./common-node");o(n,i)},{"./common-node":3,"safe-buffer":141,"xtend/mutable":175}],79:[function(e,t){(function(n){t.exports=function(e,t){function r(i){o.removeEventListener("loadend",r,!1),i.error?t(i.error):t(null,new n(o.result))}if("undefined"==typeof Blob||!(e instanceof Blob))throw new Error("first argument must be a Blob");if("function"!=typeof t)throw new Error("second argument must be a function");var o=new FileReader;o.addEventListener("loadend",r,!1),o.readAsArrayBuffer(e)}}).call(this,e("buffer").Buffer)},{buffer:4}],80:[function(e,t){(function(n){function r(e,t){return this instanceof r?void(i.call(this),!t&&(t={}),"object"==typeof e&&(t=e,e=t.size),this.size=e||512,this._zeroPadding=!t.nopad&&s(t.zeroPadding,!0),this._buffered=[],this._bufferedBytes=0):new r(e,t)}var 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t=this;t.destroyed||(t.destroyed=!0,t._allStreams.splice(t._allStreams.indexOf(t),1),t._mediaSource.removeEventListener("sourceopen",t._openHandler),t._elem.removeEventListener("timeupdate",t._flowHandler),t._sourceBuffer&&(t._sourceBuffer.removeEventListener("updateend",t._flowHandler),"open"===t._mediaSource.readyState&&t._sourceBuffer.abort()),e&&t.emit("error",e),t.emit("close"))},r.prototype._createSourceBuffer=function(){var e=this;if(!e.destroyed)if(!d.isTypeSupported(e._type))e.destroy(new Error("The provided type is not supported"));else if(e._sourceBuffer=e._mediaSource.addSourceBuffer(e._type),e._sourceBuffer.addEventListener("updateend",e._flowHandler),e._cb){var t=e._cb;e._cb=null,t()}},r.prototype._write=function(e,t,n){var r=this;if(!r.destroyed){if(!r._sourceBuffer)return void(r._cb=function(o){return o?n(o):void r._write(e,t,n)});if(r._sourceBuffer.updating)return n(new Error("Cannot append buffer while source buffer 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Date,r,4),r.writeUInt32BE(e.timeScale||0,8),r.writeUInt32BE(e.duration||0,12),s(e.preferredRate||0,r,16),a(e.preferredVolume||0,r,20),o(r,22,32),l(e.matrix,r,32),r.writeUInt32BE(e.previewTime||0,68),r.writeUInt32BE(e.previewDuration||0,72),r.writeUInt32BE(e.posterTime||0,76),r.writeUInt32BE(e.selectionTime||0,80),r.writeUInt32BE(e.selectionDuration||0,84),r.writeUInt32BE(e.currentTime||0,88),r.writeUInt32BE(e.nextTrackId||0,92),n.mvhd.encode.bytes=96,r},n.mvhd.decode=function(e,t){return e=e.slice(t),{ctime:u(e,0),mtime:u(e,4),timeScale:e.readUInt32BE(8),duration:e.readUInt32BE(12),preferredRate:f(e,16),preferredVolume:h(e,20),matrix:c(e.slice(32,68)),previewTime:e.readUInt32BE(68),previewDuration:e.readUInt32BE(72),posterTime:e.readUInt32BE(76),selectionTime:e.readUInt32BE(80),selectionDuration:e.readUInt32BE(84),currentTime:e.readUInt32BE(88),nextTrackId:e.readUInt32BE(92)}},n.mvhd.encodingLength=function(){return 96},n.tkhd={},n.tkhd.encode=function(e,r,s){return r=r?r.slice(s):new t(80),i(e.ctime||new Date,r,0),i(e.mtime||new Date,r,4),r.writeUInt32BE(e.trackId||0,8),o(r,12,16),r.writeUInt32BE(e.duration||0,16),o(r,20,28),r.writeUInt16BE(e.layer||0,28),r.writeUInt16BE(e.alternateGroup||0,30),r.writeUInt16BE(e.volume||0,32),l(e.matrix,r,36),r.writeUInt32BE(e.trackWidth||0,72),r.writeUInt32BE(e.trackHeight||0,76),n.tkhd.encode.bytes=80,r},n.tkhd.decode=function(e,t){return e=e.slice(t),{ctime:u(e,0),mtime:u(e,4),trackId:e.readUInt32BE(8),duration:e.readUInt32BE(16),layer:e.readUInt16BE(28),alternateGroup:e.readUInt16BE(30),volume:e.readUInt16BE(32),matrix:c(e.slice(36,72)),trackWidth:e.readUInt32BE(72),trackHeight:e.readUInt32BE(76)}},n.tkhd.encodingLength=function(){return 80},n.mdhd={},n.mdhd.encode=function(e,r,o){return r=r?r.slice(o):new t(20),i(e.ctime||new Date,r,0),i(e.mtime||new Date,r,4),r.writeUInt32BE(e.timeScale||0,8),r.writeUInt32BE(e.duration||0,12),r.writeUInt16BE(e.language||0,16),r.writeUInt16BE(e.quality||0,18),n.mdhd.encode.bytes=20,r},n.mdhd.decode=function(e,t){return e=e.slice(t),{ctime:u(e,0),mtime:u(e,4),timeScale:e.readUInt32BE(8),duration:e.readUInt32BE(12),language:e.readUInt16BE(16),quality:e.readUInt16BE(18)}},n.mdhd.encodingLength=function(){return 20},n.vmhd={},n.vmhd.encode=function(e,r,o){r=r?r.slice(o):new t(8),r.writeUInt16BE(e.graphicsMode||0,0);var i=e.opcolor||[0,0,0];return r.writeUInt16BE(i[0],2),r.writeUInt16BE(i[1],4),r.writeUInt16BE(i[2],6),n.vmhd.encode.bytes=8,r},n.vmhd.decode=function(e,t){return e=e.slice(t),{graphicsMode:e.readUInt16BE(0),opcolor:[e.readUInt16BE(2),e.readUInt16BE(4),e.readUInt16BE(6)]}},n.vmhd.encodingLength=function(){return 8},n.smhd={},n.smhd.encode=function(e,r,i){return r=r?r.slice(i):new t(4),r.writeUInt16BE(e.balance||0,0),o(r,2,4),n.smhd.encode.bytes=4,r},n.smhd.decode=function(e,t){return e=e.slice(t),{balance:e.readUInt16BE(0)}},n.smhd.encodingLength=function(){return 4},n.stsd={},n.stsd.encode=function(e,r,o){r=r?r.slice(o):new t(n.stsd.encodingLength(e));var s=e.entries||[];r.writeUInt32BE(s.length,0);for(var d=4,a=0,i;a<s.length;a++)i=s[a],m.encode(i,r,d),d+=m.encode.bytes;return n.stsd.encode.bytes=d,r},n.stsd.decode=function(e,t,n){e=e.slice(t);for(var r=e.readUInt32BE(0),o=Array(r),s=4,d=0,i;d<r;d++)i=m.decode(e,s,n),o[d]=i,s+=i.length;return{entries:o}},n.stsd.encodingLength=function(e){var t=4;if(!e.entries)return t;for(var n=0;n<e.entries.length;n++)t+=m.encodingLength(e.entries[n]);return t},n.avc1=n.VisualSampleEntry={},n.VisualSampleEntry.encode=function(e,r,i){r=r?r.slice(i):new 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a=m.decode(e,s,r);i.children.push(a),i[a.type]=a,s+=a.length}return i},n.VisualSampleEntry.encodingLength=function(e){var t=78,n=e.children||[];return n.forEach(function(e){t+=m.encodingLength(e)}),t},n.avcC={},n.avcC.encode=function(e,r,o){r=r?r.slice(o):t(e.buffer.length),e.buffer.copy(r),n.avcC.encode.bytes=e.buffer.length},n.avcC.decode=function(e,n,r){return e=e.slice(n,r),{mimeCodec:e.toString("hex",1,4),buffer:new t(e)}},n.avcC.encodingLength=function(e){return e.buffer.length},n.mp4a=n.AudioSampleEntry={},n.AudioSampleEntry.encode=function(e,r,i){r=r?r.slice(i):new t(n.AudioSampleEntry.encodingLength(e)),o(r,0,6),r.writeUInt16BE(e.dataReferenceIndex||0,6),o(r,8,16),r.writeUInt16BE(e.channelCount||2,16),r.writeUInt16BE(e.sampleSize||16,18),o(r,20,24),r.writeUInt32BE(e.sampleRate||0,24);var s=28,d=e.children||[];d.forEach(function(e){m.encode(e,r,s),s+=m.encode.bytes}),n.AudioSampleEntry.encode.bytes=s},n.AudioSampleEntry.decode=function(e,t,n){e=e.slice(t,n);for(var r=n-t,o={dataReferenceIndex:e.readUInt16BE(6),channelCount:e.readUInt16BE(16),sampleSize:e.readUInt16BE(18),sampleRate:e.readUInt32BE(24),children:[]},i=28;8<=r-i;){var s=m.decode(e,i,r);o.children.push(s),o[s.type]=s,i+=s.length}return o},n.AudioSampleEntry.encodingLength=function(e){var t=28,n=e.children||[];return n.forEach(function(e){t+=m.encodingLength(e)}),t},n.esds={},n.esds.encode=function(e,r,o){r=r?r.slice(o):t(e.buffer.length),e.buffer.copy(r,0),n.esds.encode.bytes=e.buffer.length},n.esds.decode=function(e,n,r){e=e.slice(n,r);var o=_.Descriptor.decode(e,0,e.length),i="ESDescriptor"===o.tagName?o:{},s=i.DecoderConfigDescriptor||{},d=s.oti||0,a=s.DecoderSpecificInfo,l=a?(248&a.buffer.readUInt8(0))>>3:0,p=null;return d&&(p=d.toString(16),l&&(p+="."+l)),{mimeCodec:p,buffer:new t(e.slice(0))}},n.esds.encodingLength=function(e){return e.buffer.length},n.stsz={},n.stsz.encode=function(e,r,o){var s=e.entries||[];r=r?r.slice(o):t(n.stsz.encodingLength(e)),r.writeUInt32BE(0,0),r.writeUInt32BE(s.length,4);for(var d=0;d<s.length;d++)r.writeUInt32BE(s[d],4*d+8);return n.stsz.encode.bytes=8+4*s.length,r},n.stsz.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=e.readUInt32BE(4),o=Array(r),s=0;s<r;s++)o[s]=0===n?e.readUInt32BE(4*s+8):n;return{entries:o}},n.stsz.encodingLength=function(e){return 8+4*e.entries.length},n.stss=n.stco={},n.stco.encode=function(e,r,o){var s=e.entries||[];r=r?r.slice(o):new t(n.stco.encodingLength(e)),r.writeUInt32BE(s.length,0);for(var d=0;d<s.length;d++)r.writeUInt32BE(s[d],4*d+4);return n.stco.encode.bytes=4+4*s.length,r},n.stco.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=Array(n),o=0;o<n;o++)r[o]=e.readUInt32BE(4*o+4);return{entries:r}},n.stco.encodingLength=function(e){return 4+4*e.entries.length},n.stts={},n.stts.encode=function(e,r,o){var s=e.entries||[];r=r?r.slice(o):new t(n.stts.encodingLength(e)),r.writeUInt32BE(s.length,0);for(var d=0,i;d<s.length;d++)i=8*d+4,r.writeUInt32BE(s[d].count||0,i),r.writeUInt32BE(s[d].duration||0,i+4);return n.stts.encode.bytes=4+8*e.entries.length,r},n.stts.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=Array(n),o=0,i;o<n;o++)i=8*o+4,r[o]={count:e.readUInt32BE(i),duration:e.readUInt32BE(i+4)};return{entries:r}},n.stts.encodingLength=function(e){return 4+8*e.entries.length},n.ctts={},n.ctts.encode=function(e,r,o){var s=e.entries||[];r=r?r.slice(o):new t(n.ctts.encodingLength(e)),r.writeUInt32BE(s.length,0);for(var d=0,i;d<s.length;d++)i=8*d+4,r.writeUInt32BE(s[d].count||0,i),r.writeUInt32BE(s[d].compositionOffset||0,i+4);return n.ctts.encode.bytes=4+8*s.length,r},n.ctts.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=Array(n),o=0,i;o<n;o++)i=8*o+4,r[o]={count:e.readUInt32BE(i),compositionOffset:e.readInt32BE(i+4)};return{entries:r}},n.ctts.encodingLength=function(e){return 4+8*e.entries.length},n.stsc={},n.stsc.encode=function(e,r,o){var s=e.entries||[];r=r?r.slice(o):new t(n.stsc.encodingLength(e)),r.writeUInt32BE(s.length,0);for(var d=0,i;d<s.length;d++)i=12*d+4,r.writeUInt32BE(s[d].firstChunk||0,i),r.writeUInt32BE(s[d].samplesPerChunk||0,i+4),r.writeUInt32BE(s[d].sampleDescriptionId||0,i+8);return n.stsc.encode.bytes=4+12*s.length,r},n.stsc.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=Array(n),o=0,i;o<n;o++)i=12*o+4,r[o]={firstChunk:e.readUInt32BE(i),samplesPerChunk:e.readUInt32BE(i+4),sampleDescriptionId:e.readUInt32BE(i+8)};return{entries:r}},n.stsc.encodingLength=function(e){return 4+12*e.entries.length},n.dref={},n.dref.encode=function(e,r,o){r=r?r.slice(o):new t(n.dref.encodingLength(e));var s=e.entries||[];r.writeUInt32BE(s.length,0);for(var d=4,a=0;a<s.length;a++){var i=s[a],l=(i.buf?i.buf.length:0)+4+4;r.writeUInt32BE(l,d),d+=4,r.write(i.type,d,4,"ascii"),d+=4,i.buf&&(i.buf.copy(r,d),d+=i.buf.length)}return 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this._buffered===this._chunks},r.prototype.flush=function(){if(!this._buffer||this._chunks!==this._buffered)return null;var t=e.concat(this._buffer,this.length);return this._buffer=null,this._cancellations=null,this.sources=null,this._flushed=!0,t},r.prototype.init=function(){return!this._flushed&&(!!this._buffer||(this._buffer=Array(this._chunks),this._cancellations=[],this.sources=[],!0))}}).call(this,e("buffer").Buffer)},{buffer:4}],157:[function(e,t){(function(n){var r=e("is-typedarray").strict;t.exports=function(e){if(r(e)){var t=new n(e.buffer);return e.byteLength!==e.buffer.byteLength&&(t=t.slice(e.byteOffset,e.byteOffset+e.byteLength)),t}return new n(e)}}).call(this,e("buffer").Buffer)},{buffer:4,"is-typedarray":100}],158:[function(e,t,n){(function(e){var t=4294967295;n.encodingLength=function(){return 8},n.encode=function(n,o,i){o||(o=new e(8)),i||(i=0);var s=r(n/t);return o.writeUInt32BE(s,i),o.writeUInt32BE(n-s*t,i+4),o},n.decode=function(n,r){r||(r=0),n||(n=new e(4)),r||(r=0);var o=n.readUInt32BE(r),i=n.readUInt32BE(r+4);return o*t+i},n.encode.bytes=8,n.decode.bytes=8}).call(this,e("buffer").Buffer)},{buffer:4}],159:[function(e,t){"use strict";function n(e,t){for(var n=1,r=e.length,o=e[0],s=e[0],d=1;d<r;++d)if(s=o,o=e[d],t(o,s)){if(d===n){n++;continue}e[n++]=o}return e.length=n,e}function r(e){for(var t=1,n=e.length,r=e[0],o=e[0],s=1;s<n;++s,o=r)if(o=r,r=e[s],r!==o){if(s===t){t++;continue}e[t++]=r}return e.length=t,e}t.exports=function(e,t,o){return 0===e.length?e:t?(o||e.sort(t),n(e,t)):(o||e.sort(),r(e))}},{}],160:[function(e,t){t.exports=function(e,t){if(!(t>=e.length||0>t)){var n=e.pop();if(t<e.length){var r=e[t];return e[t]=n,r}return n}}},{}],161:[function(e,n){var r=e("bencode"),o=e("bitfield"),i=e("safe-buffer").Buffer,s=e("debug")("ut_metadata"),d=e("events").EventEmitter,a=e("inherits"),l=e("simple-sha1"),p=1e3,c=16384;n.exports=function(e){function n(t){d.call(this),this._wire=t,this._metadataComplete=!1,this._metadataSize=null,this._remainingRejects=null,this._fetching=!1,this._bitfield=new o(0,{grow:p}),i.isBuffer(e)&&this.setMetadata(e)}return a(n,d),n.prototype.name="ut_metadata",n.prototype.onHandshake=function(e){this._infoHash=e},n.prototype.onExtendedHandshake=function(e){return e.m&&e.m.ut_metadata?e.metadata_size?"number"!=typeof e.metadata_size||1e7<e.metadata_size||0>=e.metadata_size?this.emit("warning",new Error("Peer gave invalid metadata size")):void(this._metadataSize=e.metadata_size,this._numPieces=t(this._metadataSize/c),this._remainingRejects=2*this._numPieces,this._fetching&&this._requestPieces()):this.emit("warning",new Error("Peer does not have metadata")):this.emit("warning",new Error("Peer does not support ut_metadata"))},n.prototype.onMessage=function(e){var t,n;try{var o=e.toString(),i=o.indexOf("ee")+2;t=r.decode(o.substring(0,i)),n=e.slice(i)}catch(e){return}switch(t.msg_type){case 0:this._onRequest(t.piece);break;case 1:this._onData(t.piece,n,t.total_size);break;case 2:this._onReject(t.piece);}},n.prototype.fetch=function(){this._metadataComplete||(this._fetching=!0,this._metadataSize&&this._requestPieces())},n.prototype.cancel=function(){this._fetching=!1},n.prototype.setMetadata=function(e){if(this._metadataComplete)return!0;s("set metadata");try{var t=r.decode(e).info;t&&(e=r.encode(t))}catch(e){}return this._infoHash&&this._infoHash!==l.sync(e)?!1:(this.cancel(),this.metadata=e,this._metadataComplete=!0,this._metadataSize=this.metadata.length,this._wire.extendedHandshake.metadata_size=this._metadataSize,this.emit("metadata",r.encode({info:r.decode(this.metadata)})),!0)},n.prototype._send=function(e,t){var n=r.encode(e);i.isBuffer(t)&&(n=i.concat([n,t])),this._wire.extended("ut_metadata",n)},n.prototype._request=function(e){this._send({msg_type:0,piece:e})},n.prototype._data=function(e,t,n){var r={msg_type:1,piece:e};"number"==typeof n&&(r.total_size=n),this._send(r,t)},n.prototype._reject=function(e){this._send({msg_type:2,piece:e})},n.prototype._onRequest=function(e){if(!this._metadataComplete)return void this._reject(e);var t=e*c,n=t+c;n>this._metadataSize&&(n=this._metadataSize);var r=this.metadata.slice(t,n);this._data(e,r,this._metadataSize)},n.prototype._onData=function(e,t){t.length>c||(t.copy(this.metadata,e*c),this._bitfield.set(e),this._checkDone())},n.prototype._onReject=function(e){0<this._remainingRejects&&this._fetching?(this._request(e),this._remainingRejects-=1):this.emit("warning",new Error("Peer sent \"reject\" too much"))},n.prototype._requestPieces=function(){this.metadata=i.alloc(this._metadataSize);for(var e=0;e<this._numPieces;e++)this._request(e)},n.prototype._checkDone=function(){for(var e=!0,t=0;t<this._numPieces;t++)if(!this._bitfield.get(t)){e=!1;break}if(e){var n=this.setMetadata(this.metadata);n||this._failedMetadata()}},n.prototype._failedMetadata=function(){this._bitfield=new o(0,{grow:p}),this._remainingRejects-=this._numPieces,0<this._remainingRejects?this._requestPieces():this.emit("warning",new Error("Peer sent invalid metadata"))},n}},{bencode:71,bitfield:73,debug:87,events:7,inherits:96,"safe-buffer":141,"simple-sha1":145}],162:[function(e,t,n){arguments[4][39][0].apply(n,arguments)},{dup:39}],163:[function(e,t){(function(n){function o(e){var t=this;a.call(t),t._tracks=[],t._fragmentSequence=1,t._file=e,t._decoder=null,t._findMoov(0)}function s(e,t){var n=this;n._entries=e,n._countName=t||"count",n._index=0,n._offset=0,n.value=n._entries[0]}function d(){return{version:0,flags:0,entries:[]}}var i=e("binary-search"),a=e("events").EventEmitter,l=e("inherits"),p=e("mp4-stream"),c=e("mp4-box-encoding"),u=e("range-slice-stream");t.exports=o,l(o,a),o.prototype._findMoov=function(e){var t=this;t._decoder&&t._decoder.destroy(),t._decoder=p.decode();var n=t._file.createReadStream({start:e});n.pipe(t._decoder),t._decoder.once("box",function(r){"moov"===r.type?t._decoder.decode(function(e){n.destroy();try{t._processMoov(e)}catch(e){e.message="Cannot parse mp4 file: "+e.message,t.emit("error",e)}}):(n.destroy(),t._findMoov(e+r.length))})},s.prototype.inc=function(){var e=this;e._offset++,e._offset>=e._entries[e._index][e._countName]&&(e._index++,e._offset=0),e.value=e._entries[e._index]},o.prototype._processMoov=function(e){var t=this,r=e.traks;t._tracks=[],t._hasVideo=!1,t._hasAudio=!1;for(var o=0;o<r.length;o++){var i=r[o],a=i.mdia.minf.stbl,l=a.stsd.entries[0],p=i.mdia.hdlr.handlerType,u,f;if("vide"===p&&"avc1"===l.type){if(t._hasVideo)continue;t._hasVideo=!0,u="avc1",l.avcC&&(u+="."+l.avcC.mimeCodec),f="video/mp4; codecs=\""+u+"\""}else if("soun"===p&&"mp4a"===l.type){if(t._hasAudio)continue;t._hasAudio=!0,u="mp4a",l.esds&&l.esds.mimeCodec&&(u+="."+l.esds.mimeCodec),f="audio/mp4; codecs=\""+u+"\""}else continue;var h=[],g=0,m=0,_=0,y=0,b=0,w=0,k=new s(a.stts.entries),x=null;a.ctts&&(x=new s(a.ctts.entries));for(var v=0;;){var S=a.stsc.entries[b],C=a.stsz.entries[g],E=k.value.duration,T=x?x.value.compositionOffset:0,I=!0;if(a.stss&&(I=a.stss.entries[v]===g+1),h.push({size:C,duration:E,dts:w,presentationOffset:T,sync:I,offset:y+a.stco.entries[_]}),g++,g>=a.stsz.entries.length)break;if(m++,y+=C,m>=S.samplesPerChunk){m=0,y=0,_++;var L=a.stsc.entries[b+1];L&&_+1>=L.firstChunk&&b++}w+=E,k.inc(),x&&x.inc(),I&&v++}i.mdia.mdhd.duration=0,i.tkhd.duration=0;var B=S.sampleDescriptionId,R={type:"moov",mvhd:e.mvhd,traks:[{tkhd:i.tkhd,mdia:{mdhd:i.mdia.mdhd,hdlr:i.mdia.hdlr,elng:i.mdia.elng,minf:{vmhd:i.mdia.minf.vmhd,smhd:i.mdia.minf.smhd,dinf:i.mdia.minf.dinf,stbl:{stsd:a.stsd,stts:d(),ctts:d(),stsc:d(),stsz:d(),stco:d(),stss:d()}}}}],mvex:{mehd:{fragmentDuration:e.mvhd.duration},trexs:[{trackId:i.tkhd.trackId,defaultSampleDescriptionIndex:B,defaultSampleDuration:0,defaultSampleSize:0,defaultSampleFlags:0}]}};t._tracks.push({trackId:i.tkhd.trackId,timeScale:i.mdia.mdhd.timeScale,samples:h,currSample:null,currTime:null,moov:R,mime:f})}if(0===t._tracks.length)return void t.emit("error",new Error("no playable tracks"));e.mvhd.duration=0,t._ftyp={type:"ftyp",brand:"iso5",brandVersion:0,compatibleBrands:["iso5"]};var P=c.encode(t._ftyp),A=t._tracks.map(function(e){var t=c.encode(e.moov);return{mime:e.mime,init:n.concat([P,t])}});t.emit("ready",A)},o.prototype.seek=function(e){var t=this;if(!t._tracks)throw new Error("Not ready yet; wait for 'ready' event");t._fileStream&&(t._fileStream.destroy(),t._fileStream=null);var n=-1;if(t._tracks.map(function(r,o){function i(e){s.destroyed||s.box(e.moof,function(n){if(n)return t.emit("error",n);if(!s.destroyed){var d=r.inStream.slice(e.ranges);d.pipe(s.mediaData(e.length,function(e){if(e)return t.emit("error",e);if(!s.destroyed){var n=t._generateFragment(o);return n?void i(n):s.finalize()}}))}})}r.outStream&&r.outStream.destroy(),r.inStream&&(r.inStream.destroy(),r.inStream=null);var s=r.outStream=p.encode(),d=t._generateFragment(o,e);return d?void((-1==n||d.ranges[0].start<n)&&(n=d.ranges[0].start),i(d)):s.finalize()}),0<=n){var r=t._fileStream=t._file.createReadStream({start:n});t._tracks.forEach(function(e){e.inStream=new u(n,{highWaterMark:1e7}),r.pipe(e.inStream)})}return t._tracks.map(function(e){return e.outStream})},o.prototype._findSampleBefore=function(e,t){var n=this,o=n._tracks[e],s=r(o.timeScale*t),d=i(o.samples,s,function(e,n){var t=e.dts+e.presentationOffset;return t-n});for(-1===d?d=0:0>d&&(d=-d-2);!o.samples[d].sync;)d--;return d};o.prototype._generateFragment=function(e,t){var n=this,r=n._tracks[e],o;if(o=void 0===t?r.currSample:n._findSampleBefore(e,t),o>=r.samples.length)return null;for(var i=r.samples[o].dts,s=0,d=[],a=o,l;a<r.samples.length&&(l=r.samples[a],!(l.sync&&l.dts-i>=r.timeScale*1));a++){s+=l.size;var p=d.length-1;0>p||d[p].end!==l.offset?d.push({start:l.offset,end:l.offset+l.size}):d[p].end+=l.size}return r.currSample=a,{moof:n._generateMoof(e,o,a),ranges:d,length:s}},o.prototype._generateMoof=function(e,t,n){for(var r=this,o=r._tracks[e],i=[],s=t,d;s<n;s++)d=o.samples[s],i.push({sampleDuration:d.duration,sampleSize:d.size,sampleFlags:d.sync?33554432:16842752,sampleCompositionTimeOffset:d.presentationOffset});var a={type:"moof",mfhd:{sequenceNumber:r._fragmentSequence++},trafs:[{tfhd:{flags:131072,trackId:o.trackId},tfdt:{baseMediaDecodeTime:o.samples[t].dts},trun:{flags:3841,dataOffset:8,entries:i}}]};return a.trafs[0].trun.dataOffset+=c.encodingLength(a),a}}).call(this,e("buffer").Buffer)},{"binary-search":72,buffer:4,events:7,inherits:96,"mp4-box-encoding":108,"mp4-stream":111,"range-slice-stream":126}],164:[function(e,t){function n(e,t,o){var i=this;return this instanceof n?void(o=o||{},i.detailedError=null,i._elem=t,i._elemWrapper=new r(t),i._waitingFired=!1,i._trackMeta=null,i._file=e,i._tracks=null,"none"!==i._elem.preload&&i._createMuxer(),i._onError=function(){i.detailedError=i._elemWrapper.detailedError,i.destroy()},i._onWaiting=function(){i._waitingFired=!0,i._muxer?i._tracks&&i._pump():i._createMuxer()},i._elem.addEventListener("waiting",i._onWaiting),i._elem.addEventListener("error",i._onError)):new n(e,t,o)}var r=e("mediasource"),o=e("pump"),i=e("./mp4-remuxer");t.exports=n,n.prototype._createMuxer=function(){var e=this;e._muxer=new i(e._file),e._muxer.on("ready",function(t){e._tracks=t.map(function(t){var n=e._elemWrapper.createWriteStream(t.mime);n.on("error",function(t){e._elemWrapper.error(t)});var r={muxed:null,mediaSource:n,initFlushed:!1,onInitFlushed:null};return n.write(t.init,function(e){r.initFlushed=!0,r.onInitFlushed&&r.onInitFlushed(e)}),r}),(e._waitingFired||"auto"===e._elem.preload)&&e._pump()}),e._muxer.on("error",function(t){e._elemWrapper.error(t)})},n.prototype._pump=function(){var e=this,t=e._muxer.seek(e._elem.currentTime,!e._tracks);e._tracks.forEach(function(n,r){var i=function(){n.muxed&&(n.muxed.destroy(),n.mediaSource=e._elemWrapper.createWriteStream(n.mediaSource),n.mediaSource.on("error",function(t){e._elemWrapper.error(t)})),n.muxed=t[r],o(n.muxed,n.mediaSource)};n.initFlushed?i():n.onInitFlushed=function(t){return t?void e._elemWrapper.error(t):void i()}})},n.prototype.destroy=function(){var e=this;e.destroyed||(e.destroyed=!0,e._elem.removeEventListener("waiting",e._onWaiting),e._elem.removeEventListener("error",e._onError),e._tracks&&e._tracks.forEach(function(e){e.muxed.destroy()}),e._elem.src="")}},{"./mp4-remuxer":163,mediasource:104,pump:123}],165:[function(e,t){(function(n,r){function o(e){function t(){i.destroyed||(i.ready=!0,i.emit("ready"))}var i=this;return i instanceof o?void(u.call(i),!e&&(e={}),i.peerId="string"==typeof e.peerId?e.peerId:d.isBuffer(e.peerId)?e.peerId.toString("hex"):d.from(T+w(9).toString("base64")).toString("hex"),i.peerIdBuffer=d.from(i.peerId,"hex"),i.nodeId="string"==typeof e.nodeId?e.nodeId:d.isBuffer(e.nodeId)?e.nodeId.toString("hex"):w(20).toString("hex"),i.nodeIdBuffer=d.from(i.nodeId,"hex"),i._debugId=i.peerId.toString("hex").substring(0,7),i.destroyed=!1,i.listening=!1,i.torrentPort=e.torrentPort||0,i.dhtPort=e.dhtPort||0,i.tracker=e.tracker===void 0?{}:e.tracker,i.torrents=[],i.maxConns=+e.maxConns||55,i._debug("new webtorrent (peerId %s, nodeId %s, port %s)",i.peerId,i.nodeId,i.torrentPort),i.tracker&&("object"!=typeof i.tracker&&(i.tracker={}),e.rtcConfig&&(console.warn("WebTorrent: opts.rtcConfig is deprecated. Use opts.tracker.rtcConfig instead"),i.tracker.rtcConfig=e.rtcConfig),e.wrtc&&(console.warn("WebTorrent: opts.wrtc is deprecated. Use opts.tracker.wrtc instead"),i.tracker.wrtc=e.wrtc),r.WRTC&&!i.tracker.wrtc&&(i.tracker.wrtc=r.WRTC)),"function"==typeof v?i._tcpPool=new v(i):n.nextTick(function(){i._onListening()}),i._downloadSpeed=k(),i._uploadSpeed=k(),!1!==e.dht&&"function"==typeof c?(i.dht=new c(f({nodeId:i.nodeId},e.dht)),i.dht.once("error",function(e){i._destroy(e)}),i.dht.once("listening",function(){var e=i.dht.address();e&&(i.dhtPort=e.port)}),i.dht.setMaxListeners(0),i.dht.listen(i.dhtPort)):i.dht=!1,i.enableWebSeeds=!1!==e.webSeeds,"function"==typeof g&&null!=e.blocklist?g(e.blocklist,{headers:{"user-agent":"WebTorrent/"+C+" (https://webtorrent.io)"}},function(e,n){return e?i.error("Failed to load blocklist: "+e.message):void(i.blocked=n,t())}):n.nextTick(t)):new o(e)}function i(e){return"object"==typeof e&&null!=e&&"function"==typeof e.pipe}function s(e){return"undefined"!=typeof FileList&&e instanceof FileList}t.exports=o;var d=e("safe-buffer").Buffer,a=e("simple-concat"),l=e("create-torrent"),p=e("debug")("webtorrent"),c=e("bittorrent-dht/client"),u=e("events").EventEmitter,f=e("xtend"),h=e("inherits"),g=e("load-ip-set"),m=e("run-parallel"),_=e("parse-torrent"),y=e("path"),b=e("simple-peer"),w=e("randombytes"),k=e("speedometer"),x=e("zero-fill"),v=e("./lib/tcp-pool"),S=e("./lib/torrent"),C=e("./package.json").version,E=C.match(/([0-9]+)/g).slice(0,2).map(function(e){return x(2,e)}).join(""),T="-WW"+E+"-";h(o,u),o.WEBRTC_SUPPORT=b.WEBRTC_SUPPORT,Object.defineProperty(o.prototype,"downloadSpeed",{get:function(){return this._downloadSpeed()}}),Object.defineProperty(o.prototype,"uploadSpeed",{get:function(){return this._uploadSpeed()}}),Object.defineProperty(o.prototype,"progress",{get:function(){var e=this.torrents.filter(function(e){return 1!==e.progress}),t=e.reduce(function(e,t){return e+t.downloaded},0),n=e.reduce(function(e,t){return e+(t.length||0)},0)||1;return t/n}}),Object.defineProperty(o.prototype,"ratio",{get:function(){var e=this.torrents.reduce(function(e,t){return e+t.uploaded},0),t=this.torrents.reduce(function(e,t){return e+t.received},0)||1;return e/t}}),o.prototype.get=function(e){var t=this,n=t.torrents.length,r,o;if(e instanceof S){for(r=0;r<n;r++)if(o=t.torrents[r],o===e)return o;}else{var i;try{i=_(e)}catch(e){}if(!i)return null;if(!i.infoHash)throw new Error("Invalid torrent identifier");for(r=0;r<n;r++)if(o=t.torrents[r],o.infoHash===i.infoHash)return o}return null},o.prototype.download=function(e,t,n){return console.warn("WebTorrent: client.download() is deprecated. Use client.add() instead"),this.add(e,t,n)},o.prototype.add=function(e,t,n){function r(){if(!s.destroyed)for(var e=0,n=s.torrents.length,r;e<n;e++)if(r=s.torrents[e],r.infoHash===d.infoHash&&r!==d)return void d._destroy(new Error("Cannot add duplicate torrent "+d.infoHash))}function o(){s.destroyed||("function"==typeof n&&n(d),s.emit("torrent",d))}function i(){d.removeListener("_infoHash",r),d.removeListener("ready",o),d.removeListener("close",i)}var s=this;if(s.destroyed)throw new Error("client is destroyed");if("function"==typeof t)return s.add(e,null,t);s._debug("add"),t=t?f(t):{};var d=new S(e,s,t);return s.torrents.push(d),d.once("_infoHash",r),d.once("ready",o),d.once("close",i),d},o.prototype.seed=function(e,t,n){function r(e){o._debug("on seed"),"function"==typeof n&&n(e),e.emit("seed"),o.emit("seed",e)}var o=this;if(o.destroyed)throw new Error("client is destroyed");if("function"==typeof t)return o.seed(e,null,t);o._debug("seed"),t=t?f(t):{},"string"==typeof e&&(t.path=y.dirname(e)),t.createdBy||(t.createdBy="WebTorrent/"+E);var d=o.add(null,t,function(e){var t=[function(t){e.load(p,t)}];o.dht&&t.push(function(t){e.once("dhtAnnounce",t)}),m(t,function(t){return o.destroyed?void 0:t?e._destroy(t):void r(e)})}),p;return s(e)&&(e=Array.prototype.slice.call(e)),Array.isArray(e)||(e=[e]),m(e.map(function(e){return function(t){i(e)?a(e,t):t(null,e)}}),function(e,n){return o.destroyed?void 0:e?d._destroy(e):void l.parseInput(n,t,function(e,r){return o.destroyed?void 0:e?d._destroy(e):void(p=r.map(function(e){return e.getStream}),l(n,t,function(e,t){if(!o.destroyed){if(e)return d._destroy(e);var n=o.get(t);n?d._destroy(new Error("Cannot add duplicate torrent "+n.infoHash)):d._onTorrentId(t)}}))})}),d},o.prototype.remove=function(e,t){this._debug("remove");var n=this.get(e);if(!n)throw new Error("No torrent with id "+e);this._remove(e,t)},o.prototype._remove=function(e,t){var n=this.get(e);n&&(this.torrents.splice(this.torrents.indexOf(n),1),n.destroy(t))},o.prototype.address=function(){return this.listening?this._tcpPool?this._tcpPool.server.address():{address:"0.0.0.0",family:"IPv4",port:0}:null},o.prototype.destroy=function(e){if(this.destroyed)throw new Error("client already destroyed");this._destroy(null,e)},o.prototype._destroy=function(e,t){var n=this;n._debug("client destroy"),n.destroyed=!0;var r=n.torrents.map(function(e){return function(t){e.destroy(t)}});n._tcpPool&&r.push(function(e){n._tcpPool.destroy(e)}),n.dht&&r.push(function(e){n.dht.destroy(e)}),m(r,t),e&&n.emit("error",e),n.torrents=[],n._tcpPool=null,n.dht=null},o.prototype._onListening=function(){if(this._debug("listening"),this.listening=!0,this._tcpPool){var e=this._tcpPool.server.address();e&&(this.torrentPort=e.port)}this.emit("listening")},o.prototype._debug=function(){var e=[].slice.call(arguments);e[0]="["+this._debugId+"] "+e[0],p.apply(null,e)}}).call(this,e("_process"),"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global)},{"./lib/tcp-pool":3,"./lib/torrent":170,"./package.json":172,_process:15,"bittorrent-dht/client":3,"create-torrent":86,debug:87,events:7,inherits:96,"load-ip-set":3,"parse-torrent":120,path:13,randombytes:125,"run-parallel":139,"safe-buffer":141,"simple-concat":142,"simple-peer":144,speedometer:147,xtend:174,"zero-fill":176}],166:[function(e,t){function n(e,t){i.Readable.call(this,t),this.destroyed=!1,this._torrent=e._torrent;var n=t&&t.start||0,r=t&&t.end&&t.end<e.length?t.end:e.length-1,o=e._torrent.pieceLength;this._startPiece=0|(n+e.offset)/o,this._endPiece=0|(r+e.offset)/o,this._piece=this._startPiece,this._offset=n+e.offset-this._startPiece*o,this._missing=r-n+1,this._reading=!1,this._notifying=!1,this._criticalLength=d(0|1048576/o,2)}t.exports=n;var r=e("debug")("webtorrent:file-stream"),o=e("inherits"),i=e("readable-stream");o(n,i.Readable),n.prototype._read=function(){this._reading||(this._reading=!0,this._notify())},n.prototype._notify=function(){var e=this;if(e._reading&&0!==e._missing){if(!e._torrent.bitfield.get(e._piece))return e._torrent.critical(e._piece,e._piece+e._criticalLength);if(!e._notifying){e._notifying=!0;var t=e._piece;e._torrent.store.get(t,function(n,o){return e._notifying=!1,e.destroyed?void 0:n?e._destroy(n):void(r("read %s (length %s) (err %s)",t,o.length,n&&n.message),e._offset&&(o=o.slice(e._offset),e._offset=0),e._missing<o.length&&(o=o.slice(0,e._missing)),e._missing-=o.length,r("pushing buffer of length %s",o.length),e._reading=!1,e.push(o),0===e._missing&&e.push(null))}),e._piece+=1}}},n.prototype.destroy=function(e){this._destroy(null,e)},n.prototype._destroy=function(e,t){this.destroyed||(this.destroyed=!0,!this._torrent.destroyed&&this._torrent.deselect(this._startPiece,this._endPiece,!0),e&&this.emit("error",e),this.emit("close"),t&&t())}},{debug:87,inherits:96,"readable-stream":135}],167:[function(e,t){(function(n){function r(e,t){i.call(this),this._torrent=e,this._destroyed=!1,this.name=t.name,this.path=t.path,this.length=t.length,this.offset=t.offset,this.done=!1;var n=t.offset,r=n+t.length-1;this._startPiece=0|n/this._torrent.pieceLength,this._endPiece=0|r/this._torrent.pieceLength,0===this.length&&(this.done=!0,this.emit("done"))}t.exports=r;var o=e("end-of-stream"),i=e("events").EventEmitter,s=e("./file-stream"),d=e("inherits"),a=e("path"),l=e("render-media"),p=e("readable-stream"),c=e("stream-to-blob"),u=e("stream-to-blob-url"),f=e("stream-with-known-length-to-buffer");d(r,i),Object.defineProperty(r.prototype,"downloaded",{get:function(){if(!this._torrent.bitfield)return 0;for(var e=0,t=this._startPiece;t<=this._endPiece;++t)if(this._torrent.bitfield.get(t))e+=this._torrent.pieceLength;else{var n=this._torrent.pieces[t];e+=n.length-n.missing}return e}}),Object.defineProperty(r.prototype,"progress",{get:function(){return this.length?this.downloaded/this.length:0}}),r.prototype.select=function(e){0===this.length||this._torrent.select(this._startPiece,this._endPiece,e)},r.prototype.deselect=function(){0===this.length||this._torrent.deselect(this._startPiece,this._endPiece,!1)},r.prototype.createReadStream=function(e){var t=this;if(0===this.length){var r=new p.PassThrough;return n.nextTick(function(){r.end()}),r}var i=new s(t,e);return t._torrent.select(i._startPiece,i._endPiece,!0,function(){i._notify()}),o(i,function(){t._destroyed||!t._torrent.destroyed&&t._torrent.deselect(i._startPiece,i._endPiece,!0)}),i},r.prototype.getBuffer=function(e){f(this.createReadStream(),this.length,e)},r.prototype.getBlob=function(e){if("undefined"==typeof window)throw new Error("browser-only method");c(this.createReadStream(),this._getMimeType(),e)},r.prototype.getBlobURL=function(e){if("undefined"==typeof window)throw new Error("browser-only method");u(this.createReadStream(),this._getMimeType(),e)},r.prototype.appendTo=function(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");l.append(this,e,t,n)},r.prototype.renderTo=function(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");l.render(this,e,t,n)},r.prototype._getMimeType=function(){return l.mime[a.extname(this.name).toLowerCase()]},r.prototype._destroy=function(){this._destroyed=!0,this._torrent=null}}).call(this,e("_process"))},{"./file-stream":166,_process:15,"end-of-stream":90,events:7,inherits:96,path:13,"readable-stream":135,"render-media":136,"stream-to-blob":149,"stream-to-blob-url":148,"stream-with-known-length-to-buffer":150}],168:[function(e,t,n){function r(e,t){var n=this;n.id=e,n.type=t,s("new Peer %s",e),n.addr=null,n.conn=null,n.swarm=null,n.wire=null,n.connected=!1,n.destroyed=!1,n.timeout=null,n.retries=0,n.sentHandshake=!1}function o(){}var i=e("unordered-array-remove"),s=e("debug")("webtorrent:peer"),d=e("bittorrent-protocol"),a=e("./webconn");n.createWebRTCPeer=function(e,t){var n=new r(e.id,"webrtc");return n.conn=e,n.swarm=t,n.conn.connected?n.onConnect():(n.conn.once("connect",function(){n.onConnect()}),n.conn.once("error",function(e){n.destroy(e)}),n.startConnectTimeout()),n},n.createTCPIncomingPeer=function(e){var t=e.remoteAddress+":"+e.remotePort,n=new r(t,"tcpIncoming");return n.conn=e,n.addr=t,n.onConnect(),n},n.createTCPOutgoingPeer=function(e,t){var n=new r(e,"tcpOutgoing");return n.addr=e,n.swarm=t,n},n.createWebSeedPeer=function(e,t){var n=new r(e,"webSeed");return n.swarm=t,n.conn=new a(e,t),n.onConnect(),n},r.prototype.onConnect=function(){var e=this;if(!e.destroyed){e.connected=!0,s("Peer %s connected",e.id),clearTimeout(e.connectTimeout);var t=e.conn;t.once("end",function(){e.destroy()}),t.once("close",function(){e.destroy()}),t.once("finish",function(){e.destroy()}),t.once("error",function(t){e.destroy(t)});var n=e.wire=new d;n.type=e.type,n.once("end",function(){e.destroy()}),n.once("close",function(){e.destroy()}),n.once("finish",function(){e.destroy()}),n.once("error",function(t){e.destroy(t)}),n.once("handshake",function(t,n){e.onHandshake(t,n)}),e.startHandshakeTimeout(),t.pipe(n).pipe(t),e.swarm&&!e.sentHandshake&&e.handshake()}},r.prototype.onHandshake=function(e,t){var n=this;if(n.swarm&&!n.destroyed){if(n.swarm.destroyed)return n.destroy(new Error("swarm already destroyed"));if(e!==n.swarm.infoHash)return n.destroy(new Error("unexpected handshake info hash for this swarm"));if(t===n.swarm.peerId)return n.destroy(new Error("refusing to connect to ourselves"));s("Peer %s got handshake %s",n.id,e),clearTimeout(n.handshakeTimeout),n.retries=0;var r=n.addr;!r&&n.conn.remoteAddress&&(r=n.conn.remoteAddress+":"+n.conn.remotePort),n.swarm._onWire(n.wire,r),n.swarm&&!n.swarm.destroyed&&(n.sentHandshake||n.handshake())}},r.prototype.handshake=function(){var e=this,t={dht:!e.swarm.private&&!!e.swarm.client.dht};e.wire.handshake(e.swarm.infoHash,e.swarm.client.peerId,t),e.sentHandshake=!0},r.prototype.startConnectTimeout=function(){var e=this;clearTimeout(e.connectTimeout),e.connectTimeout=setTimeout(function(){e.destroy(new Error("connect timeout"))},"webrtc"===e.type?25000:5e3),e.connectTimeout.unref&&e.connectTimeout.unref()},r.prototype.startHandshakeTimeout=function(){var e=this;clearTimeout(e.handshakeTimeout),e.handshakeTimeout=setTimeout(function(){e.destroy(new Error("handshake timeout"))},25000),e.handshakeTimeout.unref&&e.handshakeTimeout.unref()},r.prototype.destroy=function(e){var t=this;if(!t.destroyed){t.destroyed=!0,t.connected=!1,s("destroy %s (error: %s)",t.id,e&&(e.message||e)),clearTimeout(t.connectTimeout),clearTimeout(t.handshakeTimeout);var n=t.swarm,r=t.conn,d=t.wire;t.swarm=null,t.conn=null,t.wire=null,n&&d&&i(n.wires,n.wires.indexOf(d)),r&&(r.on("error",o),r.destroy()),d&&d.destroy(),n&&n.removePeer(t.id)}}},{"./webconn":171,"bittorrent-protocol":74,debug:87,"unordered-array-remove":160}],169:[function(e,t){function n(e){var t=this;t._torrent=e,t._numPieces=e.pieces.length,t._pieces=[],t._onWire=function(e){t.recalculate(),t._initWire(e)},t._onWireHave=function(e){t._pieces[e]+=1},t._onWireBitfield=function(){t.recalculate()},t._torrent.wires.forEach(function(e){t._initWire(e)}),t._torrent.on("wire",t._onWire),t.recalculate()}function r(){return!0}t.exports=n,n.prototype.getRarestPiece=function(e){e||(e=r);for(var t=[],n=Infinity,o=0;o<this._numPieces;++o)if(e(o)){var i=this._pieces[o];i===n?t.push(o):i<n&&(t=[o],n=i)}return 0<t.length?t[0|Math.random()*t.length]:-1},n.prototype.destroy=function(){var e=this;e._torrent.removeListener("wire",e._onWire),e._torrent.wires.forEach(function(t){e._cleanupWireEvents(t)}),e._torrent=null,e._pieces=null,e._onWire=null,e._onWireHave=null,e._onWireBitfield=null},n.prototype._initWire=function(e){var t=this;e._onClose=function(){t._cleanupWireEvents(e);for(var n=0;n<this._numPieces;++n)t._pieces[n]-=e.peerPieces.get(n)},e.on("have",t._onWireHave),e.on("bitfield",t._onWireBitfield),e.once("close",e._onClose)},n.prototype.recalculate=function(){var e;for(e=0;e<this._numPieces;++e)this._pieces[e]=0;var t=this._torrent.wires.length;for(e=0;e<t;++e)for(var n=this._torrent.wires[e],r=0;r<this._numPieces;++r)this._pieces[r]+=n.peerPieces.get(r)},n.prototype._cleanupWireEvents=function(e){e.removeListener("have",this._onWireHave),e.removeListener("bitfield",this._onWireBitfield),e._onClose&&e.removeListener("close",e._onClose),e._onClose=null}},{}],170:[function(n,r){(function(o,i){function s(e,t,n){_.call(this),this._debugId="unknown infohash",this.client=t,this.announce=n.announce,this.urlList=n.urlList,this.path=n.path,this._store=n.store||k,this._getAnnounceOpts=n.getAnnounceOpts,this.strategy=n.strategy||"sequential",this.maxWebConns=n.maxWebConns||4,this._rechokeNumSlots=!1===n.uploads||0===n.uploads?0:+n.uploads||10,this._rechokeOptimisticWire=null,this._rechokeOptimisticTime=0,this._rechokeIntervalId=null,this.ready=!1,this.destroyed=!1,this.paused=!1,this.done=!1,this.metadata=null,this.store=null,this.files=[],this.pieces=[],this._amInterested=!1,this._selections=[],this._critical=[],this.wires=[],this._queue=[],this._peers={},this._peersLength=0,this.received=0,this.uploaded=0,this._downloadSpeed=M(),this._uploadSpeed=M(),this._servers=[],this._xsRequests=[],this._fileModtimes=n.fileModtimes,null!==e&&this._onTorrentId(e),this._debug("new torrent")}function a(e,n){return 2+t(n*e.downloadSpeed()/P.BLOCK_LENGTH)}function l(e,n,r){return 1+t(n*e.downloadSpeed()/r)}function p(e){return 0|Math.random()*e}function c(){}r.exports=s;var u=n("addr-to-ip-port"),f=n("bitfield"),h=n("chunk-store-stream/write"),g=n("debug")("webtorrent:torrent"),m=n("torrent-discovery"),_=n("events").EventEmitter,y=n("xtend"),b=n("xtend/mutable"),w=n("fs"),k=n("fs-chunk-store"),x=n("simple-get"),v=n("immediate-chunk-store"),S=n("inherits"),C=n("multistream"),E=n("net"),T=n("os"),I=n("run-parallel"),L=n("run-parallel-limit"),B=n("parse-torrent"),R=n("path"),P=n("torrent-piece"),A=n("pump"),U=n("random-iterate"),O=n("simple-sha1"),M=n("speedometer"),q=n("uniq"),j=n("ut_metadata"),H=n("ut_pex"),D=n("./file"),N=n("./peer"),W=n("./rarity-map"),z=n("./server"),F=5e3,V=3*P.BLOCK_LENGTH,G=1,K=2,X=[1000,5000,15000],Y=n("../package.json").version,Q="WebTorrent/"+Y+" (https://webtorrent.io)",J;try{J=R.join(w.statSync("/tmp")&&"/tmp","webtorrent")}catch(e){J=R.join("function"==typeof T.tmpdir?T.tmpdir():"/","webtorrent")}S(s,_),Object.defineProperty(s.prototype,"timeRemaining",{get:function(){return this.done?0:0===this.downloadSpeed?Infinity:1e3*((this.length-this.downloaded)/this.downloadSpeed)}}),Object.defineProperty(s.prototype,"downloaded",{get:function(){if(!this.bitfield)return 0;for(var e=0,t=0,n=this.pieces.length;t<n;++t)if(this.bitfield.get(t))e+=t===n-1?this.lastPieceLength:this.pieceLength;else{var r=this.pieces[t];e+=r.length-r.missing}return e}}),Object.defineProperty(s.prototype,"downloadSpeed",{get:function(){return this._downloadSpeed()}}),Object.defineProperty(s.prototype,"uploadSpeed",{get:function(){return this._uploadSpeed()}}),Object.defineProperty(s.prototype,"progress",{get:function(){return this.length?this.downloaded/this.length:0}}),Object.defineProperty(s.prototype,"ratio",{get:function(){return this.uploaded/(this.received||1)}}),Object.defineProperty(s.prototype,"numPeers",{get:function(){return this.wires.length}}),Object.defineProperty(s.prototype,"torrentFileBlobURL",{get:function(){if("undefined"==typeof window)throw new Error("browser-only property");return this.torrentFile?URL.createObjectURL(new Blob([this.torrentFile],{type:"application/x-bittorrent"})):null}}),Object.defineProperty(s.prototype,"_numQueued",{get:function(){return this._queue.length+(this._peersLength-this._numConns)}}),Object.defineProperty(s.prototype,"_numConns",{get:function(){var e=this,t=0;for(var n in e._peers)e._peers[n].connected&&(t+=1);return t}}),Object.defineProperty(s.prototype,"swarm",{get:function(){return console.warn("WebTorrent: `torrent.swarm` is deprecated. Use `torrent` directly instead."),this}}),s.prototype._onTorrentId=function(e){var t=this;if(!t.destroyed){var n;try{n=B(e)}catch(e){}n?(t.infoHash=n.infoHash,t._debugId=n.infoHash.toString("hex").substring(0,7),o.nextTick(function(){t.destroyed||t._onParsedTorrent(n)})):B.remote(e,function(e,n){return t.destroyed?void 0:e?t._destroy(e):void t._onParsedTorrent(n)})}},s.prototype._onParsedTorrent=function(e){var t=this;if(!t.destroyed){if(t._processParsedTorrent(e),!t.infoHash)return t._destroy(new Error("Malformed torrent data: No info hash"));(t.path||(t.path=R.join(J,t.infoHash)),t._rechokeIntervalId=setInterval(function(){t._rechoke()},1e4),t._rechokeIntervalId.unref&&t._rechokeIntervalId.unref(),t.emit("_infoHash",t.infoHash),!t.destroyed)&&(t.emit("infoHash",t.infoHash),t.destroyed||(t.client.listening?t._onListening():t.client.once("listening",function(){t._onListening()})))}},s.prototype._processParsedTorrent=function(e){this._debugId=e.infoHash.toString("hex").substring(0,7),this.announce&&(e.announce=e.announce.concat(this.announce)),this.client.tracker&&i.WEBTORRENT_ANNOUNCE&&!this.private&&(e.announce=e.announce.concat(i.WEBTORRENT_ANNOUNCE)),this.urlList&&(e.urlList=e.urlList.concat(this.urlList)),q(e.announce),q(e.urlList),b(this,e),this.magnetURI=B.toMagnetURI(e),this.torrentFile=B.toTorrentFile(e)},s.prototype._onListening=function(){function t(e){s._destroy(e)}function n(e){"string"==typeof e&&s.done||s.addPeer(e)}function r(){s.emit("trackerAnnounce"),0===s.numPeers&&s.emit("noPeers","tracker")}function o(){s.emit("dhtAnnounce"),0===s.numPeers&&s.emit("noPeers","dht")}function i(e){s.emit("warning",e)}var s=this;if(!(s.discovery||s.destroyed)){var d=s.client.tracker;d&&(d=y(s.client.tracker,{getAnnounceOpts:function(){var t={uploaded:s.uploaded,downloaded:s.downloaded,left:e(s.length-s.downloaded,0)};return s.client.tracker.getAnnounceOpts&&b(t,s.client.tracker.getAnnounceOpts()),s._getAnnounceOpts&&b(t,s._getAnnounceOpts()),t}})),s.discovery=new m({infoHash:s.infoHash,announce:s.announce,peerId:s.client.peerId,dht:!s.private&&s.client.dht,tracker:d,port:s.client.torrentPort,userAgent:Q}),s.discovery.on("error",t),s.discovery.on("peer",n),s.discovery.on("trackerAnnounce",r),s.discovery.on("dhtAnnounce",o),s.discovery.on("warning",i),s.info?s._onMetadata(s):s.xs&&s._getMetadataFromServer()}},s.prototype._getMetadataFromServer=function(){function e(e,n){function r(r,o,i){if(t.destroyed)return n(null);if(t.metadata)return n(null);if(r)return t.emit("warning",new Error("http error from xs param: "+e)),n(null);if(200!==o.statusCode)return t.emit("warning",new Error("non-200 status code "+o.statusCode+" from xs param: "+e)),n(null);var s;try{s=B(i)}catch(e){}return s?s.infoHash===t.infoHash?void(t._onMetadata(s),n(null)):(t.emit("warning",new Error("got torrent file with incorrect info hash from xs param: "+e)),n(null)):(t.emit("warning",new Error("got invalid torrent file from xs param: "+e)),n(null))}if(0!==e.indexOf("http://")&&0!==e.indexOf("https://"))return t.emit("warning",new Error("skipping non-http xs param: "+e)),n(null);var o;try{o=x.concat({url:e,method:"GET",headers:{"user-agent":Q}},r)}catch(r){return t.emit("warning",new Error("skipping invalid url xs param: "+e)),n(null)}t._xsRequests.push(o)}var t=this,n=Array.isArray(t.xs)?t.xs:[t.xs],r=n.map(function(t){return function(n){e(t,n)}});I(r)},s.prototype._onMetadata=function(e){var t=this;if(!(t.metadata||t.destroyed)){t._debug("got metadata"),t._xsRequests.forEach(function(e){e.abort()}),t._xsRequests=[];var n;if(e&&e.infoHash)n=e;else try{n=B(e)}catch(e){return t._destroy(e)}t._processParsedTorrent(n),t.metadata=t.torrentFile,t.client.enableWebSeeds&&t.urlList.forEach(function(e){t.addWebSeed(e)}),0!==t.pieces.length&&t.select(0,t.pieces.length-1,!1),t._rarityMap=new W(t),t.store=new v(new t._store(t.pieceLength,{torrent:{infoHash:t.infoHash},files:t.files.map(function(e){return{path:R.join(t.path,e.path),length:e.length,offset:e.offset}}),length:t.length})),t.files=t.files.map(function(e){return new D(t,e)}),t._hashes=t.pieces,t.pieces=t.pieces.map(function(e,n){var r=n===t.pieces.length-1?t.lastPieceLength:t.pieceLength;return new P(r)}),t._reservations=t.pieces.map(function(){return[]}),t.bitfield=new f(t.pieces.length),t.wires.forEach(function(e){e.ut_metadata&&e.ut_metadata.setMetadata(t.metadata),t._onWireWithMetadata(e)}),t._debug("verifying existing torrent data"),t._fileModtimes&&t._store===k?t.getFileModtimes(function(e,n){if(e)return t._destroy(e);var r=t.files.map(function(e,r){return n[r]===t._fileModtimes[r]}).every(function(e){return e});if(r){for(var o=0;o<t.pieces.length;o++)t._markVerified(o);t._onStore()}else t._verifyPieces()}):t._verifyPieces(),t.emit("metadata")}},s.prototype.getFileModtimes=function(e){var t=this,n=[];L(t.files.map(function(e,r){return function(o){w.stat(R.join(t.path,e.path),function(e,t){return e&&"ENOENT"!==e.code?o(e):void(n[r]=t&&t.mtime.getTime(),o(null))})}}),K,function(r){t._debug("done getting file modtimes"),e(r,n)})},s.prototype._verifyPieces=function(){var e=this;L(e.pieces.map(function(t,n){return function(t){return e.destroyed?t(new Error("torrent is destroyed")):void e.store.get(n,function(r,i){return e.destroyed?t(new Error("torrent is destroyed")):r?o.nextTick(t,null):void O(i,function(r){if(e.destroyed)return t(new Error("torrent is destroyed"));if(r===e._hashes[n]){if(!e.pieces[n])return;e._debug("piece verified %s",n),e._markVerified(n)}else e._debug("piece invalid %s",n);t(null)})})}}),K,function(t){return t?e._destroy(t):void(e._debug("done verifying"),e._onStore())})},s.prototype._markVerified=function(e){this.pieces[e]=null,this._reservations[e]=null,this.bitfield.set(e,!0)},s.prototype._onStore=function(){var e=this;e.destroyed||(e._debug("on store"),e.ready=!0,e.emit("ready"),e._checkDone(),e._updateSelections())},s.prototype.destroy=function(e){var t=this;t._destroy(null,e)},s.prototype._destroy=function(e,t){var n=this;if(!n.destroyed){for(var r in n.destroyed=!0,n._debug("destroy"),n.client._remove(n),clearInterval(n._rechokeIntervalId),n._xsRequests.forEach(function(e){e.abort()}),n._rarityMap&&n._rarityMap.destroy(),n._peers)n.removePeer(r);n.files.forEach(function(e){e instanceof D&&e._destroy()});var o=n._servers.map(function(e){return function(t){e.destroy(t)}});n.discovery&&o.push(function(e){n.discovery.destroy(e)}),n.store&&o.push(function(e){n.store.close(e)}),I(o,t),e&&(0===n.listenerCount("error")?n.client.emit("error",e):n.emit("error",e)),n.emit("close"),n.client=null,n.files=[],n.discovery=null,n.store=null,n._rarityMap=null,n._peers=null,n._servers=null,n._xsRequests=null}},s.prototype.addPeer=function(e){var t=this;if(t.destroyed)throw new Error("torrent is destroyed");if(!t.infoHash)throw new Error("addPeer() must not be called before the `infoHash` event");if(t.client.blocked){var n;if("string"==typeof e){var r;try{r=u(e)}catch(n){return t._debug("ignoring peer: invalid %s",e),t.emit("invalidPeer",e),!1}n=r[0]}else"string"==typeof e.remoteAddress&&(n=e.remoteAddress);if(n&&t.client.blocked.contains(n))return t._debug("ignoring peer: blocked %s",e),"string"!=typeof e&&e.destroy(),t.emit("blockedPeer",e),!1}var o=!!t._addPeer(e);return o?t.emit("peer",e):t.emit("invalidPeer",e),o},s.prototype._addPeer=function(e){var t=this;if(t.destroyed)return"string"!=typeof e&&e.destroy(),null;if("string"==typeof e&&!t._validAddr(e))return t._debug("ignoring peer: invalid %s",e),null;var n=e&&e.id||e;if(t._peers[n])return t._debug("ignoring peer: duplicate (%s)",n),"string"!=typeof e&&e.destroy(),null;if(t.paused)return t._debug("ignoring peer: torrent is paused"),"string"!=typeof e&&e.destroy(),null;t._debug("add peer %s",n);var r;return r="string"==typeof e?N.createTCPOutgoingPeer(e,t):N.createWebRTCPeer(e,t),t._peers[r.id]=r,t._peersLength+=1,"string"==typeof e&&(t._queue.push(r),t._drain()),r},s.prototype.addWebSeed=function(e){if(this.destroyed)throw new Error("torrent is destroyed");if(!/^https?:\/\/.+/.test(e))return this.emit("warning",new Error("ignoring invalid web seed: "+e)),void this.emit("invalidPeer",e);if(this._peers[e])return this.emit("warning",new Error("ignoring duplicate web seed: "+e)),void this.emit("invalidPeer",e);this._debug("add web seed %s",e);var t=N.createWebSeedPeer(e,this);this._peers[t.id]=t,this._peersLength+=1,this.emit("peer",e)},s.prototype._addIncomingPeer=function(e){var t=this;return t.destroyed?e.destroy(new Error("torrent is destroyed")):t.paused?e.destroy(new Error("torrent is paused")):void(this._debug("add incoming peer %s",e.id),t._peers[e.id]=e,t._peersLength+=1)},s.prototype.removePeer=function(e){var t=this,n=e&&e.id||e;e=t._peers[n];e&&(this._debug("removePeer %s",n),delete t._peers[n],t._peersLength-=1,e.destroy(),t._drain())},s.prototype.select=function(e,t,n,r){var o=this;if(o.destroyed)throw new Error("torrent is destroyed");if(0>e||t<e||o.pieces.length<=t)throw new Error("invalid selection ",e,":",t);n=+n||0,o._debug("select %s-%s (priority %s)",e,t,n),o._selections.push({from:e,to:t,offset:0,priority:n,notify:r||c}),o._selections.sort(function(e,t){return t.priority-e.priority}),o._updateSelections()},s.prototype.deselect=function(e,t,n){var r=this;if(r.destroyed)throw new Error("torrent is destroyed");n=+n||0,r._debug("deselect %s-%s (priority %s)",e,t,n);for(var o=0,i;o<r._selections.length;++o)if(i=r._selections[o],i.from===e&&i.to===t&&i.priority===n){r._selections.splice(o,1);break}r._updateSelections()},s.prototype.critical=function(e,t){var n=this;if(n.destroyed)throw new Error("torrent is destroyed");n._debug("critical %s-%s",e,t);for(var r=e;r<=t;++r)n._critical[r]=!0;n._updateSelections()},s.prototype._onWire=function(e,t){var n=this;if(n._debug("got wire %s (%s)",e._debugId,t||"Unknown"),e.on("download",function(e){n.destroyed||(n.received+=e,n._downloadSpeed(e),n.client._downloadSpeed(e),n.emit("download",e),n.client.emit("download",e))}),e.on("upload",function(e){n.destroyed||(n.uploaded+=e,n._uploadSpeed(e),n.client._uploadSpeed(e),n.emit("upload",e),n.client.emit("upload",e))}),n.wires.push(e),t){var r=u(t);e.remoteAddress=r[0],e.remotePort=r[1]}n.client.dht&&n.client.dht.listening&&e.on("port",function(r){return n.destroyed||n.client.dht.destroyed?void 0:e.remoteAddress?0===r||65536<r?n._debug("ignoring invalid PORT from peer"):void(n._debug("port: %s (from %s)",r,t),n.client.dht.addNode({host:e.remoteAddress,port:r})):n._debug("ignoring PORT from peer with no address")}),e.on("timeout",function(){n._debug("wire timeout (%s)",t),e.destroy()}),e.setTimeout(3e4,!0),e.setKeepAlive(!0),e.use(j(n.metadata)),e.ut_metadata.on("warning",function(e){n._debug("ut_metadata warning: %s",e.message)}),n.metadata||(e.ut_metadata.on("metadata",function(e){n._debug("got metadata via ut_metadata"),n._onMetadata(e)}),e.ut_metadata.fetch()),"function"!=typeof H||n.private||(e.use(H()),e.ut_pex.on("peer",function(e){n.done||(n._debug("ut_pex: got peer: %s (from %s)",e,t),n.addPeer(e))}),e.ut_pex.on("dropped",function(e){var r=n._peers[e];r&&!r.connected&&(n._debug("ut_pex: dropped peer: %s (from %s)",e,t),n.removePeer(e))}),e.once("close",function(){e.ut_pex.reset()})),n.emit("wire",e,t),n.metadata&&o.nextTick(function(){n._onWireWithMetadata(e)})},s.prototype._onWireWithMetadata=function(e){function t(){r.destroyed||e.destroyed||(r._numQueued>2*(r._numConns-r.numPeers)&&e.amInterested?e.destroy():(o=setTimeout(t,F),o.unref&&o.unref()))}function n(){if(e.peerPieces.buffer.length===r.bitfield.buffer.length){for(s=0;s<r.pieces.length;++s)if(!e.peerPieces.get(s))return;e.isSeeder=!0,e.choke()}}var r=this,o=null,s;e.on("bitfield",function(){n(),r._update()}),e.on("have",function(){n(),r._update()}),e.once("interested",function(){e.unchoke()}),e.once("close",function(){clearTimeout(o)}),e.on("choke",function(){clearTimeout(o),o=setTimeout(t,F),o.unref&&o.unref()}),e.on("unchoke",function(){clearTimeout(o),r._update()}),e.on("request",function(t,n,o,i){return o>131072?e.destroy():void(r.pieces[t]||r.store.get(t,{offset:n,length:o},i))}),e.bitfield(r.bitfield),e.interested(),e.peerExtensions.dht&&r.client.dht&&r.client.dht.listening&&e.port(r.client.dht.address().port),"webSeed"!==e.type&&(o=setTimeout(t,F),o.unref&&o.unref()),e.isSeeder=!1,n()},s.prototype._updateSelections=function(){var e=this;!e.ready||e.destroyed||(o.nextTick(function(){e._gcSelections()}),e._updateInterest(),e._update())},s.prototype._gcSelections=function(){for(var e=this,t=0;t<e._selections.length;++t){for(var n=e._selections[t],r=n.offset;e.bitfield.get(n.from+n.offset)&&n.from+n.offset<n.to;)n.offset+=1;r!==n.offset&&n.notify(),n.to===n.from+n.offset&&e.bitfield.get(n.from+n.offset)&&(e._selections.splice(t,1),t-=1,n.notify(),e._updateInterest())}e._selections.length||e.emit("idle")},s.prototype._updateInterest=function(){var e=this,t=e._amInterested;e._amInterested=!!e._selections.length,e.wires.forEach(function(t){e._amInterested?t.interested():t.uninterested()});t===e._amInterested||(e._amInterested?e.emit("interested"):e.emit("uninterested"))},s.prototype._update=function(){var e=this;if(!e.destroyed)for(var t=U(e.wires),n;n=t();)e._updateWire(n)},s.prototype._updateWire=function(t){function n(e,n,r,o){return function(s){return s>=e&&s<=n&&!(s in r)&&t.peerPieces.get(s)&&(!o||o(s))}}function r(){if(!t.requests.length)for(var e=d._selections.length;e--;){var r=d._selections[e],o;if("rarest"===d.strategy)for(var i=r.from+r.offset,s=r.to,a={},l=0,p=n(i,s,a);l<s-i+1&&(o=d._rarityMap.getRarestPiece(p),!(0>o));){if(d._request(t,o,!1))return;a[o]=!0,l+=1}else for(o=r.to;o>=r.from+r.offset;--o)if(t.peerPieces.get(o)&&d._request(t,o,!1))return}}function o(){var n=t.downloadSpeed()||1;if(n>V)return function(){return!0};var r=e(1,t.requests.length)*P.BLOCK_LENGTH/n,o=10,i=0;return function(e){if(!o||d.bitfield.get(e))return!0;for(var t=d.pieces[e].missing;i<d.wires.length;i++){var s=d.wires[i],a=s.downloadSpeed();if(!(a<V)&&!(a<=n)&&s.peerPieces.get(e)&&!(0<(t-=a*r)))return o--,!1}return!0}}function s(e){for(var t=e,n=e;n<d._selections.length&&d._selections[n].priority;n++)t=n;var r=d._selections[e];d._selections[e]=d._selections[t],d._selections[t]=r}function i(e){if(t.requests.length>=p)return!0;for(var r=o(),a=0;a<d._selections.length;a++){var i=d._selections[a],l;if("rarest"===d.strategy)for(var c=i.from+i.offset,u=i.to,f={},h=0,g=n(c,u,f,r);h<u-c+1&&(l=d._rarityMap.getRarestPiece(g),!(0>l));){for(;d._request(t,l,d._critical[l]||e););if(t.requests.length<p){f[l]=!0,h++;continue}return i.priority&&s(a),!0}else for(l=i.from+i.offset;l<=i.to;l++)if(t.peerPieces.get(l)&&r(l)){for(;d._request(t,l,d._critical[l]||e););if(!(t.requests.length<p))return i.priority&&s(a),!0}}return!1}var d=this;if(!t.peerChoking){if(!t.downloaded)return r();var l=a(t,0.5);if(!(t.requests.length>=l)){var p=a(t,G);i(!1)||i(!0)}}},s.prototype._rechoke=function(){function e(e,t){return e.downloadSpeed===t.downloadSpeed?e.uploadSpeed===t.uploadSpeed?e.wire.amChoking===t.wire.amChoking?e.salt-t.salt:e.wire.amChoking?1:-1:t.uploadSpeed-e.uploadSpeed:t.downloadSpeed-e.downloadSpeed}var t=this;if(t.ready){0<t._rechokeOptimisticTime?t._rechokeOptimisticTime-=1:t._rechokeOptimisticWire=null;var n=[];t.wires.forEach(function(e){e.isSeeder||e===t._rechokeOptimisticWire||n.push({wire:e,downloadSpeed:e.downloadSpeed(),uploadSpeed:e.uploadSpeed(),salt:Math.random(),isChoked:!0})}),n.sort(e);for(var r=0,o=0;o<n.length&&r<t._rechokeNumSlots;++o)n[o].isChoked=!1,n[o].wire.peerInterested&&(r+=1);if(!t._rechokeOptimisticWire&&o<n.length&&t._rechokeNumSlots){var i=n.slice(o).filter(function(e){return e.wire.peerInterested}),s=i[p(i.length)];s&&(s.isChoked=!1,t._rechokeOptimisticWire=s.wire,t._rechokeOptimisticTime=2)}n.forEach(function(e){e.wire.amChoking!==e.isChoked&&(e.isChoked?e.wire.choke():e.wire.unchoke())})}},s.prototype._hotswap=function(e,t){var n=this,o=e.downloadSpeed();if(o<P.BLOCK_LENGTH)return!1;if(!n._reservations[t])return!1;var s=n._reservations[t];if(!s)return!1;var d=Infinity,a,l;for(l=0;l<s.length;l++){var i=s[l];if(i&&i!==e){var p=i.downloadSpeed();p>=V||2*p>o||p>d||(a=i,d=p)}}if(!a)return!1;for(l=0;l<s.length;l++)s[l]===a&&(s[l]=null);for(l=0;l<a.requests.length;l++){var c=a.requests[l];c.piece===t&&n.pieces[t].cancel(0|c.offset/P.BLOCK_LENGTH)}return n.emit("hotswap",a,e,t),!0},s.prototype._request=function(e,t,n){function s(){o.nextTick(function(){p._update()})}var p=this,c=e.requests.length,u="webSeed"===e.type;if(p.bitfield.get(t))return!1;var f=u?d(l(e,G,p.pieceLength),p.maxWebConns):a(e,G);if(c>=f)return!1;var h=p.pieces[t],g=u?h.reserveRemaining():h.reserve();if(-1===g&&n&&p._hotswap(e,t)&&(g=u?h.reserveRemaining():h.reserve()),-1===g)return!1;var m=p._reservations[t];m||(m=p._reservations[t]=[]);var r=m.indexOf(null);-1===r&&(r=m.length),m[r]=e;var i=h.chunkOffset(g),_=u?h.chunkLengthRemaining(g):h.chunkLength(g);return e.request(t,i,_,function n(o,d){if(!p.destroyed){if(!p.ready)return p.once("ready",function(){n(o,d)});if(m[r]===e&&(m[r]=null),h!==p.pieces[t])return s();if(o)return p._debug("error getting piece %s (offset: %s length: %s) from %s: %s",t,i,_,e.remoteAddress+":"+e.remotePort,o.message),u?h.cancelRemaining(g):h.cancel(g),void s();if(p._debug("got piece %s (offset: %s length: %s) from %s",t,i,_,e.remoteAddress+":"+e.remotePort),!h.set(g,d,e))return s();var a=h.flush();O(a,function(e){if(!p.destroyed){if(e===p._hashes[t]){if(!p.pieces[t])return;p._debug("piece verified %s",t),p.pieces[t]=null,p._reservations[t]=null,p.bitfield.set(t,!0),p.store.put(t,a),p.wires.forEach(function(e){e.have(t)}),p._checkDone()&&!p.destroyed&&p.discovery.complete()}else p.pieces[t]=new P(h.length),p.emit("warning",new Error("Piece "+t+" failed verification"));s()}})}}),!0},s.prototype._checkDone=function(){var e=this;if(!e.destroyed){e.files.forEach(function(t){if(!t.done){for(var n=t._startPiece;n<=t._endPiece;++n)if(!e.bitfield.get(n))return;t.done=!0,t.emit("done"),e._debug("file done: "+t.name)}});for(var t=!0,n=0,r;n<e._selections.length;n++){r=e._selections[n];for(var o=r.from;o<=r.to;o++)if(!e.bitfield.get(o)){t=!1;break}if(!t)break}return!e.done&&t&&(e.done=!0,e._debug("torrent done: "+e.infoHash),e.emit("done")),e._gcSelections(),t}},s.prototype.load=function(e,t){var n=this;if(n.destroyed)throw new Error("torrent is destroyed");if(!n.ready)return n.once("ready",function(){n.load(e,t)});Array.isArray(e)||(e=[e]),t||(t=c);var r=new C(e),o=new h(n.store,n.pieceLength);A(r,o,function(e){return e?t(e):void(n.pieces.forEach(function(e,t){n.pieces[t]=null,n._reservations[t]=null,n.bitfield.set(t,!0)}),n._checkDone(),t(null))})},s.prototype.createServer=function(e){if("function"!=typeof z)throw new Error("node.js-only method");if(this.destroyed)throw new Error("torrent is destroyed");var t=new z(this,e);return this._servers.push(t),t},s.prototype.pause=function(){this.destroyed||(this._debug("pause"),this.paused=!0)},s.prototype.resume=function(){this.destroyed||(this._debug("resume"),this.paused=!1,this._drain())},s.prototype._debug=function(){var e=[].slice.call(arguments);e[0]="["+this.client._debugId+"] ["+this._debugId+"] "+e[0],g.apply(null,e)},s.prototype._drain=function(){var e=this;if(this._debug("_drain numConns %s maxConns %s",e._numConns,e.client.maxConns),!("function"!=typeof E.connect||e.destroyed||e.paused||e._numConns>=e.client.maxConns)){this._debug("drain (%s queued, %s/%s peers)",e._numQueued,e.numPeers,e.client.maxConns);var t=e._queue.shift();if(t){this._debug("tcp connect attempt to %s",t.addr);var n=u(t.addr),r={host:n[0],port:n[1]},o=t.conn=E.connect(r);o.once("connect",function(){t.onConnect()}),o.once("error",function(e){t.destroy(e)}),t.startConnectTimeout(),o.on("close",function(){if(!e.destroyed){if(t.retries>=X.length)return void e._debug("conn %s closed: will not re-add (max %s attempts)",t.addr,X.length);var n=X[t.retries];e._debug("conn %s closed: will re-add to queue in %sms (attempt %s)",t.addr,n,t.retries+1);var r=setTimeout(function(){var n=e._addPeer(t.addr);n&&(n.retries=t.retries+1)},n);r.unref&&r.unref()}})}}},s.prototype._validAddr=function(e){var t;try{t=u(e)}catch(t){return!1}var n=t[0],r=t[1];return 0<r&&65535>r&&("127.0.0.1"!==n||r!==this.client.torrentPort)}}).call(this,n("_process"),"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global)},{"../package.json":172,"./file":167,"./peer":168,"./rarity-map":169,"./server":3,_process:15,"addr-to-ip-port":42,bitfield:73,"chunk-store-stream/write":83,debug:87,events:7,fs:1,"fs-chunk-store":105,"immediate-chunk-store":95,inherits:96,multistream:113,net:3,os:3,"parse-torrent":120,path:13,pump:123,"random-iterate":124,"run-parallel":139,"run-parallel-limit":138,"simple-get":143,"simple-sha1":145,speedometer:147,"torrent-discovery":155,"torrent-piece":156,uniq:159,ut_metadata:161,ut_pex:3,xtend:174,"xtend/mutable":175}],171:[function(t,n){function r(e,t){c.call(this),this.url=e,this.webPeerId=p.sync(e),this._torrent=t,this._init()}n.exports=r;var o=t("bitfield"),i=t("safe-buffer").Buffer,s=t("debug")("webtorrent:webconn"),a=t("simple-get"),l=t("inherits"),p=t("simple-sha1"),c=t("bittorrent-protocol"),u=t("../package.json").version;l(r,c),r.prototype._init=function(){var e=this;e.setKeepAlive(!0),e.once("handshake",function(t){if(!e.destroyed){e.handshake(t,e.webPeerId);for(var n=e._torrent.pieces.length,r=new o(n),s=0;s<=n;s++)r.set(s,!0);e.bitfield(r)}}),e.once("interested",function(){s("interested"),e.unchoke()}),e.on("uninterested",function(){s("uninterested")}),e.on("choke",function(){s("choke")}),e.on("unchoke",function(){s("unchoke")}),e.on("bitfield",function(){s("bitfield")}),e.on("request",function(t,n,r,o){s("request pieceIndex=%d offset=%d length=%d",t,n,r),e.httpRequest(t,n,r,o)})},r.prototype.httpRequest=function(t,n,r,o){var l=this,p=t*l._torrent.pieceLength,c=p+n,f=c+r-1,h=l._torrent.files,g;if(1>=h.length)g=[{url:l.url,start:c,end:f}];else{var m=h.filter(function(e){return e.offset<=f&&e.offset+e.length>c});if(1>m.length)return o(new Error("Could not find file corresponnding to web seed range request"));g=m.map(function(t){var n=t.offset+t.length-1,r=l.url+("/"===l.url[l.url.length-1]?"":"/")+t.path;return{url:r,fileOffsetInRange:e(t.offset-c,0),start:e(c-t.offset,0),end:d(n,f-t.offset)}})}var _=0,y=!1,b;1<g.length&&(b=i.alloc(r)),g.forEach(function(e){function i(t,n){return 200>t.statusCode||300<=t.statusCode?(y=!0,o(new Error("Unexpected HTTP status code "+t.statusCode))):void(s("Got data of length %d",n.length),1===g.length?o(null,n):(n.copy(b,e.fileOffsetInRange),++_===g.length&&o(null,b)))}var d=e.url,l=e.start,p=e.end;s("Requesting url=%s pieceIndex=%d offset=%d length=%d start=%d end=%d",d,t,n,r,l,p);var c={url:d,method:"GET",headers:{"user-agent":"WebTorrent/"+u+" (https://webtorrent.io)",range:"bytes="+l+"-"+p}};a.concat(c,function(e,t,n){return y?void 0:e?"undefined"==typeof window||d.startsWith(window.location.origin+"/")?(y=!0,o(e)):a.head(d,function(t,n){return y?void 0:t?(y=!0,o(t)):200>n.statusCode||300<=n.statusCode?(y=!0,o(new Error("Unexpected HTTP status code "+n.statusCode))):n.url===d?(y=!0,o(e)):void(c.url=n.url,a.concat(c,function(e,t,n){return y?void 0:e?(y=!0,o(e)):void i(t,n)}))}):void i(t,n)})})},r.prototype.destroy=function(){c.prototype.destroy.call(this),this._torrent=null}},{"../package.json":172,bitfield:73,"bittorrent-protocol":74,debug:87,inherits:96,"safe-buffer":141,"simple-get":143,"simple-sha1":145}],172:[function(e,t){t.exports={version:"0.98.19"}},{}],173:[function(e,t){function n(e,t){function r(){for(var t=Array(arguments.length),n=0;n<t.length;n++)t[n]=arguments[n];var r=e.apply(this,t),o=t[t.length-1];return"function"==typeof r&&r!==o&&Object.keys(o).forEach(function(e){r[e]=o[e]}),r}if(e&&t)return n(e)(t);if("function"!=typeof e)throw new TypeError("need wrapper function");return Object.keys(e).forEach(function(t){r[t]=e[t]}),r}t.exports=n},{}],174:[function(e,t,n){arguments[4][40][0].apply(n,arguments)},{dup:40}],175:[function(e,t){t.exports=function(e){for(var t=1,r;t<arguments.length;t++)for(var o in r=arguments[t],r)n.call(r,o)&&(e[o]=r[o]);return e};var n=Object.prototype.hasOwnProperty},{}],176:[function(e,t){t.exports=function e(t,n,r){return void 0===n?function(n,r){return e(t,n,r)}:(void 0===r&&(r="0"),t-=n.toString().length,0<t?Array(t+(/\./.test(n)?2:1)).join(r)+n:n+"")}},{}],177:[function(e,t){t.exports={name:"pearplayer",version:"2.5.9",description:"",main:"./dist/pear-player.js",dependencies:{axios:"^0.17.1",babili:"^0.1.4","blueimp-md5":"^2.7.0",buffer:"^5.0.6","end-of-stream":"^1.4.0",events:"^1.1.1","fs-chunk-store":"^1.6.5",inherits:"^2.0.3",jquery:"^3.2.1",mp4box:"^0.3.15","parse-torrent":"^5.8.3","parse-torrent-file":"^4.1.0","readable-stream":"^2.2.9","render-media":"^2.10.0",rusha:"^0.8.13",webtorrent:"^0.98.16"},devDependencies:{copy:"^0.1.2",del:"^2.0.2"},scripts:{"build-player":"browserify index.player.js -s PearPlayer > ./dist/pear-player.js","uglify-player":"browserify -s PearPlayer -e  ./index.player.js | babili > ./dist/pear-player.min.js","pull-from-github":"git pull","push-to-github":"git add . && git commit -m 'update' && git push","npm-publish":"npm publish"},author:"Xie Ting Pear Limited",license:"MIT",homepage:"https://pear.hk",keywords:["WebRTC","video","player","p2p","peer-to-peer","peers","streaming","multiple source","torrent","web torrent","webrtc data channel","webtorrent"]}},{}],178:[function(e,t){(function(n){function o(e){a.call(this);var t=this;if(!(e.initialDownloaders&&e.fileSize&&e.scheduler))throw new Error("config is not completed");t.fileSize=e.fileSize,t.initialDownloaders=e.initialDownloaders,t.pieceLength=e.chunkSize||524288,t.interval=e.interval||5e3,t.auto=e.auto||!1,t.useMonitor=e.useMonitor||!1,t.downloaded=0,t.fogDownloaded=0,t._windowOffset=0,t.ready=!1,t.done=!1,t.destroyed=!1,t.chunks=0<e.fileSize%t.pieceLength?r(e.fileSize/t.pieceLength)+1:e.fileSize/t.pieceLength,t._selections=[],t._store=p,t.path="",t.bufferSources=Array(t.chunks),t.slide=null,t.noMoreNodes=!1,t.startTime=new Date().getTime(),t.fogRatio=0,t.sequencial=e.sequencial||!1;var n=t.initialDownloaders.filter(function(e){return 5<e.ability}).length;t.maxLoaders=5<n&&n<=t.maxLoaders?n:e.maxLoaders,t._windowLength=10<=t.initialDownloaders.length?10:t.initialDownloaders.length,t._colddown=5,t.downloaders=[],t.torrent=null,t.scheduler=e.scheduler,t._windowEnd=0,t.algorithm=e.algorithm}function i(){}t.exports=o;var d=e("debug")("pear:dispatcher"),s=e("bitfield"),a=e("events").EventEmitter,l=e("inherits"),p=e("fs-chunk-store"),c=e("immediate-chunk-store");l(o,a);o.prototype._init=function(){var e=this;if(e.downloaders=e.initialDownloaders.map(function(t){return e._setupHttp(t),t}),e.store=new c(new e._store(e.pieceLength,{path:e.path,length:e.fileSize})),e.bitfield=new s(e.chunks),e.auto){if("push"===e.algorithm){for(;e._windowEnd!==e.chunks;)e._createPushStream();e._windowEnd=0}e.select(0,e.chunks-1,!0),e.autoSlide(),e.slide=i}else;for(var t=0;t<e.bufferSources;++t)e.bufferSources[t]=null;setInterval(function(){if(!e.done){var t=new Date().getTime(),n=e.downloaded/(t-e.startTime);e.emit("meanspeed",n)}},2e3),e.ready=!0,e.emit("ready",e.chunks)},o.prototype.select=function(e,t,n,r){var o=this;if(o.destroyed)throw new Error("dispatcher is destroyed");if(0>e||t<e||o.chunks.length<=t)throw new Error("invalid selection ",e,":",t);n=+n||0,d("select %s-%s (priority %s)",e,t,n),o._selections.push({from:e,to:t,offset:0,priority:n,notify:r||i}),o._selections.sort(function(e,t){return e.priority-t.priority}),o._updateSelections()},o.prototype.deselect=function(e,t,n){var r=this;if(r.destroyed)throw new Error("dispatcher is destroyed");n=+n||0,d("deselect %s-%s (priority %s)",e,t,n);for(var o=0,i;o<r._selections.length;++o)if(i=r._selections[o],i.from===e&&i.to===t&&i.priority===n){r._selections.splice(o,1);break}r._updateSelections()},o.prototype._slide=function(){var e=this;e.done||(d("[dispatcher] slide window downloader length:"+e.downloaders.length),e._fillWindow())},o.prototype._updateSelections=function(){var e=this;!e.ready||e.destroyed||(n.nextTick(function(){e._gcSelections()}),e._update())},o.prototype._gcSelections=function(){for(var e=this,t=0;t<e._selections.length;++t){for(var n=e._selections[t],r=n.offset;e.bitfield.get(n.from+n.offset)&&n.from+n.offset<n.to;)n.offset+=1;e._windowOffset=n.from+n.offset,r!==n.offset&&n.notify(),n.to===n.from+n.offset&&e.bitfield.get(n.from+n.offset)&&(e._selections.splice(t,1),t-=1,n.notify())}e._selections.length||e.emit("idle")},o.prototype._update=function(){var e=this;if(!e.destroyed){var t=e._selections.length;if(0<t){var n=e._selections[0],r=n.from+n.offset,o=n.to;d("current _windowOffset:"+e._windowOffset),e._slide()}}},o.prototype._resetWindow=function(){if(!this.done)for(var e=0;e<this.chunks;e++)if(!this.bitfield.get(e)){this._windowEnd=e;break}},o.prototype._checkDone=function(){var e=this;if(!e.destroyed){for(var t=!0,n=0;n<e.chunks;n++)if(!e.bitfield.get(n)){t=!1;break}if(!e.done&&t){e.done=!0,e.emit("done"),e.useMonitor;for(var r=0;r<e.downloaders.length;++r)2===e.downloaders[r].type&&e.downloaders[r].simpleRTC.dataChannel.close()}else e.sequencial||e._windowEnd!==e.chunks||e._resetWindow();return e._gcSelections(),t}},o.prototype._calRange=function(e){var t=this,n=e*t.pieceLength,r=(e+1)*t.pieceLength-1;return e==t.chunks-1&&(r=e*t.pieceLength+t.fileSize%t.pieceLength-1),[n,r]},o.prototype._calIndex=function(e){var t=this;return r(e/t.pieceLength)},o.prototype._getNodes=function(e){return this.downloaders[e%this.downloaders.length]},o.prototype._fillWindow=function(){var e=this;if(!e.done){var t=e.scheduler(this.downloaders,{windowLength:e._windowLength,windowOffset:e._windowOffset});if(0!==t.length){var n=0,r=e.sequencial?e._windowOffset:e._windowEnd;for(e.emit("fillwindow",r,e._windowLength);n!==e._windowLength&&!(r>=e.chunks)&&!(n>=t.length);){if(!e.bitfield.get(r)){var o=e._calRange(r),i=t[n%t.length];i.select(o[0],o[1]),n++}else;r++}e._windowEnd=r,d("_fillWindow _windowEnd:"+e._windowEnd)}}},o.prototype._createPushStream=function(){var e=this,t=this.downloaders;if(0!==t.length){for(var n=0,r=e._windowEnd;n!==e.maxLoaders&&!(r>=e.chunks);){if(!e.bitfield.get(r)){var o=e._calRange(r),i=t[n%t.length];i.select(o[0],o[1]),n++}else;r++}e._windowEnd=r}},o.prototype._setupHttp=function(e){var t=this;return e.once("start",function(){}),e.once("done",function(){}),e.once("error",function(){console.warn("http"+e.uri+"error!"),t.downloaders.removeObj(e),t.checkoutDownloaders(),t.emit("httperror")}),e.on("data",function(n,r,o){var i=t._calIndex(r);if(d("httpDownloader"+e.uri+" ondata range:"+r+"-"+o+" at index:"+i+" speed:"+e.meanSpeed),t.validator&&!t.validator.validate(n,i))return void e.emit("error");var s=o-r+1;if(!!t.bitfield.get(i))d("\u91CD\u590D\u4E0B\u8F7D");else if(t.bitfield.set(i,!0),t.store.put(i,n),t._checkDone(),t.useMonitor){if(t.downloaded+=s,t.emit("downloaded",s),t.emit("traffic",e.mac,s,1===e.type?"HTTP_Node":"HTTP_Server",e.meanSpeed),d("ondata hd.type:"+e.type+" index:"+i),1===e.type){t.fogDownloaded+=s;var a=t.fogDownloaded/t.downloaded;a>=t.fogRatio&&t.emit("fograte",a),t.emit("fogspeed",t.downloaders.getCurrentSpeed([1])),t.bufferSources[i]=1===e.type?"n":"b"}else t.emit("cloudspeed",t.downloaders.getCurrentSpeed([0])),t.bufferSources[i]="s";t.emit("buffersources",t.bufferSources),t.emit("sourcemap",1===e.type?"n":"s",i)}}),e},o.prototype._setupDC=function(e){var t=this;e.once("start",function(){}),e.on("data",function(n,r,o){var i=t._calIndex(r);d("pear_webrtc "+e.dc_id+" ondata range:"+r+"-"+o+" at index:"+i+" speed:"+e.meanSpeed);var s=o-r+1;if(!!t.bitfield.get(i)){d("\u91CD\u590D\u4E0B\u8F7D");for(var a=0;a<t.downloaders.length;++a)2===t.downloaders[a].type&&t.downloaders[a].clearQueue()}else if(t.bitfield.set(i,!0),t.store.put(i,n),t._checkDone(),t.useMonitor){t.downloaded+=s,t.fogDownloaded+=s,d("downloaded:"+t.downloaded+" fogDownloaded:"+t.fogDownloaded),t.emit("downloaded",s);var l=t.fogDownloaded/t.downloaded;l>=t.fogRatio&&t.emit("fograte",l),t.emit("fogspeed",t.downloaders.getCurrentSpeed([2])),t.bufferSources[i]="d",t.emit("buffersources",t.bufferSources),t.emit("sourcemap","d",i),t.emit("traffic",e.mac,s,"WebRTC_Node",e.meanSpeed)}}),e.once("error",function(){console.warn("webrtc error mac:"+e.mac),e.close(),t.downloaders.removeObj(e),t.downloaders.length<t._windowLength&&t._windowLength--,t.checkoutDownloaders(),t.emit("datachannelerror")})},o.prototype.checkoutDownloaders=function(){3>=this.downloaders.length&&!this.noMoreNodes&&(this.requestMoreNodes(),this.requestMoreDataChannels(),2>=this.downloaders.length&&2<=this._windowLength/this.downloaders.length&&this.emit("needsource"))},o.prototype.addTorrent=function(e){var t=this;e.pieces.length!==this.chunks||(this.torrent=e,e.pear_downloaded=0,d("addTorrent _windowOffset:"+t._windowOffset),t._windowOffset+t._windowLength<e.pieces.length-1&&(d("torrent.select:%d to %d",t._windowOffset+t._windowLength,e.pieces.length-1),e.select(t._windowOffset+t._windowLength,e.pieces.length-1,1e3)),e.on("piecefromtorrent",function(n){if(d("piecefromtorrent:"+n),t.useMonitor){t.downloaded+=t.pieceLength,t.fogDownloaded+=t.pieceLength,e.pear_downloaded+=t.pieceLength,t.emit("downloaded",t.downloaded);var r=t.fogDownloaded/t.downloaded;r>=t.fogRatio&&t.emit("fograte",r),t.emit("fogspeed",e.downloadSpeed/1024),t.bufferSources[n]="b",t.emit("buffersources",t.bufferSources),t.emit("sourcemap","b",n),t.emit("traffic","Webtorrent",t.pieceLength,"WebRTC_Browser")}}),e.on("done",function(){d("torrent done")}))},o.prototype.addDataChannel=function(e){this.downloaders.splice(this._windowLength-1,0,e),this._setupDC(e),!this.sequencial&&10>this._windowLength&&this._windowLength++},o.prototype.addNode=function(e){this._setupHttp(e),this.downloaders.push(e),d("dispatcher add node: "+e.uri),!this.sequencial&&10>this._windowLength&&this._windowLength++},o.prototype.requestMoreNodes=function(){0<this.downloaders.length?this.emit("needmorenodes"):this.emit("error")},o.prototype.requestMoreDataChannels=function(){0<this.downloaders.length?this.emit("needmoredatachannels"):this.emit("error")},o.prototype.destroy=function(){var e=this;if(!e.destroyed){e.destroyed=!0;for(var t=0;t<e.downloaders.length;++t)e.downloaders[t].close();e.store&&e.store.close(),e.emit("close"),e.store=null,d("Dispatcher destroyed")}},o.prototype._throttle=function(e,t){var n=!1;return function(){n||(n=!0,setTimeout(function(){e.call(t),n=!1},1e3*this._colddown))}},o.prototype.autoSlide=function(){var e=this;"pull"===e.algorithm&&e._slide(),setTimeout(function(){e._slide(),e._checkDone(),e.done||e.destroyed||setTimeout(arguments.callee,e.interval)},e.interval)},o.prototype._clearAllQueues=function(){d("clearAllQueues");for(var e=0;e<this.downloaders.length;++e)this.downloaders[e].clearQueue()},o.prototype._abortAll=function(){for(var e=0;e<this.downloaders.length;++e)this.downloaders[e].abort()},Array.prototype.removeObj=function(e){for(var t=this.length,n=0;n<t;n++)if(this[n]==e){this.splice(n,1);break}},Array.prototype.getMeanSpeed=function(e){var t=0,n=0;if(e)for(var o=0;o<this.length;o++)0<=e.indexOf(this[o].type)&&(t+=this[o].meanSpeed,n++);else for(var o=0;o<this.length;o++)t+=this[o].meanSpeed,n++;return r(t/n)},Array.prototype.getCurrentSpeed=function(e){var t=0;if(e)for(var n=0;n<this.length;n++)0<=e.indexOf(this[n].type)&&(t+=this[n].speed);else for(var n=0;n<this.length;n++)t+=this[n].speed;return r(t)}}).call(this,e("_process"))},{_process:15,bitfield:73,debug:87,events:7,"fs-chunk-store":105,"immediate-chunk-store":95,inherits:96}],179:[function(e,t){function n(e,t){s.Readable.call(this,t),this.destroyed=!1,this._dispatcher=e._dispatcher;var n=t&&t.start||0,r=t&&t.end&&t.end<e.length?t.end:e.length-1,o=e._dispatcher.pieceLength;this._startPiece=0|(n+e.offset)/o,this._endPiece=0|(r+e.offset)/o,this._piece=this._startPiece,this._offset=n+e.offset-this._startPiece*o,this._missing=r-n+1,this._reading=!1,this._notifying=!1,this._criticalLength=d(0|1048576/o,2)}function r(){}t.exports=n;var o=e("debug")("pear:file-stream"),i=e("inherits"),s=e("readable-stream");i(n,s.Readable),n.prototype._read=function(){this._reading||(this._reading=!0,this._notify())},n.prototype._notify=function(){var e=this;if(e._reading&&0!==e._missing){if(!e._dispatcher.bitfield.get(e._piece))return r();if(!e._notifying){e._notifying=!0;var t=e._piece;e._dispatcher.store.get(t,function(t,n){return e._notifying=!1,e.destroyed?void 0:t?e._destroy(t):void(e._offset&&(n=n.slice(e._offset),e._offset=0),e._missing<n.length&&(n=n.slice(0,e._missing)),e._missing-=n.length,e._reading=!1,e.push(n),0===e._missing&&e.push(null))}),e._piece+=1}}},n.prototype.destroy=function(e){this._destroy(null,e)},n.prototype._destroy=function(e,t){this.destroyed||(this.destroyed=!0,!this._dispatcher.destroyed&&this._dispatcher.deselect(this._startPiece,this._endPiece,!0),o("FileStream destroy"),e&&this.emit("error",e),this.emit("close"),t&&t())}},{debug:87,inherits:96,"readable-stream":135}],180:[function(e,t){(function(n){function r(e,t){s.call(this),this._dispatcher=e,this._destroyed=!1,this.name=t.name,this.path="/tmp/player"+this.name,this.length=t.length,this.offset=t.offset,this.done=!1;var n=t.offset,r=n+t.length-1;this._startPiece=0|n/this._dispatcher.pieceLength,this._endPiece=0|r/this._dispatcher.pieceLength,0===this.length&&(this.done=!0,this.emit("done")),this._dispatcher.path=this.path,this._dispatcher.elem=t.elem}t.exports=r;var o=e("debug")("pear:file"),i=e("end-of-stream"),s=e("events").EventEmitter,d=e("path"),a=e("inherits"),l=e("render-media/lib/mime.json"),p=e("readable-stream"),c=e("./file-stream"),u=e("stream-to-blob-url"),f=e("stream-with-known-length-to-buffer");a(r,s);r.prototype.createReadStream=function(e){var t=this;if(0===this.length){var r=new p.PassThrough;return n.nextTick(function(){r.end()}),r}var o=new c(t,e);return t._dispatcher.select(o._startPiece,o._endPiece,!0,function(){o._notify()}),i(o,function(){t._destroyed||!t._dispatcher.destroyed&&t._dispatcher.deselect(o._startPiece,o._endPiece,!0)}),o},r.prototype.getBuffer=function(e){f(this.createReadStream(),this.length,e)},r.prototype.getBlobURL=function(e){u(this.createReadStream(),this._getMimeType(),e)},r.prototype.getProgressiveBlobURL=function(e){u(this.createReadStream({start:0,end:this._dispatcher.downloaded}),this._getMimeType(),e)},r.prototype._getMimeType=function(){return l[d.extname(this.name).toLowerCase()]},r.prototype._destroy=function(){this._destroyed=!0,this._dispatcher=null}}).call(this,e("_process"))},{"./file-stream":179,_process:15,debug:87,"end-of-stream":90,events:7,inherits:96,path:13,"readable-stream":135,"render-media/lib/mime.json":137,"stream-to-blob-url":148,"stream-with-known-length-to-buffer":150}],181:[function(e,t){function n(e,t,n){s.call(this),n=n||{},this.uri=e,this.type="server"===t?0:1,this.downloading=!1,this.queue=[],this.startTime=0,this.endTime=0,this.speed=0,this.meanSpeed=-1,this.counter=0,this.weight="server"===t?0.7:1,this.isAsync=n.isAsync||!1,this.downloaded=0,this.mac=this.uri.split(".")[0].split("//")[1],o("HttpDownloader mac:"+this.mac)}t.exports=n;var o=e("debug")("pear:http-downloader"),i=e("buffer/").Buffer,s=e("events").EventEmitter,d=e("inherits");d(n,s);n.prototype.select=function(e,t){var n=r(e/1048576);o("HttpDownloader "+this.uri+" select:"+e+"-"+t+" at "+n+" weight:"+this.weight),this.isAsync?this._getChunk(e,t):this.downloading?this.queue.push([e,t]):this._getChunk(e,t)},n.prototype.abort=function(){var e=this;e._xhr&&(2==e._xhr.readyState||3==e._xhr.readyState)&&(e._xhr.abort(),o("HttpDownloader "+e.uri+" aborted!")),e.downloading=!1},n.prototype.clearQueue=function(){0<this.queue.length&&(this.queue=[])},n.prototype._getChunk=function(e,t){var n=this;o("HttpDownloader _getChunk"),n.downloading=!0;var i=new XMLHttpRequest;n._xhr=i,i.open("GET",n.uri),i.responseType="arraybuffer",n.startTime=new Date().getTime();i.setRequestHeader("Range","bytes="+e+"-"+t),i.onload=function(e){if(200<=this.status||300>this.status){if(n.downloading=!1,n.endTime=new Date().getTime(),n.speed=r(e.total/(n.endTime-n.startTime)),o("http speed:"+n.speed+"KB/s"),-1==n.meanSpeed&&(n.meanSpeed=n.speed),n.meanSpeed=0.95*n.meanSpeed+0.05*n.speed,o("http "+n.uri+" meanSpeed:"+n.meanSpeed+"KB/s"),!n.isAsync&&0<n.queue.length){var t=n.queue.shift();n._getChunk(t[0],t[1])}var i=this.getResponseHeader("Content-Range").split(" ",2)[1].split("/",1)[0];n._handleChunk(i,this.response)}else n.emit("error")},i.onerror=function(){n.emit("error")},i.ontimeout=function(){o("HttpDownloader "+n.uri+" timeout"),n.emit("error")},i.send()},n.prototype._handleChunk=function(e,t){var n=e.split("-")[0],r=e.split("-")[1],o=i.from(t);this.emit("data",o,n,r,this.speed)}},{"buffer/":82,debug:87,events:7,inherits:96}],182:[function(e,t){function n(e,t,o){var d=this;if(!(d instanceof n))return new n(e,t,o);if("object"==typeof t)return n(e,"",t);if(o.algorithm&&-1==["push","pull"].indexOf(o.algorithm))throw new Error("Algorithm "+o.algorithm+" is not supported");o||(o={}),o.debug?r.enable("pear:*"):r.disable(),d.version=s,console.info("pear version:"+s),i.call(d,e,t,o)}t.exports=n;var r=e("debug"),o=e("inherits"),i=e("./worker"),s=e("../package.json").version;o(n,i),n.isWebRTCSupported=function(){return i.isRTCSupported()}},{"../package.json":177,"./worker":200,debug:87,inherits:96}],183:[function(e,t){function n(e,t){i.Readable.call(this,t),this.destroyed=!1,this._torrent=e._torrent;var n=t&&t.start||0,r=t&&t.end&&t.end<e.length?t.end:e.length-1,o=e._torrent.pieceLength;this._startPiece=0|(n+e.offset)/o,this._endPiece=0|(r+e.offset)/o,this._piece=this._startPiece,this._offset=n+e.offset-this._startPiece*o,this._missing=r-n+1,this._reading=!1,this._notifying=!1,this._criticalLength=d(0|1048576/o,2)}t.exports=n;var r=e("debug")("webtorrent:file-stream"),o=e("inherits"),i=e("readable-stream");o(n,i.Readable),n.prototype._read=function(){this._reading||(this._reading=!0,this._notify())},n.prototype._notify=function(){var e=this;if(e._reading&&0!==e._missing){if(!e._torrent.bitfield.get(e._piece))return e._torrent.critical(e._piece,e._piece+e._criticalLength);if(!e._notifying){e._notifying=!0;var t=e._piece;e._torrent.store.get(t,function(n,o){return e._notifying=!1,e.destroyed?void 0:n?e._destroy(n):void(r("read %s (length %s) (err %s)",t,o.length,n&&n.message),e._offset&&(o=o.slice(e._offset),e._offset=0),e._missing<o.length&&(o=o.slice(0,e._missing)),e._missing-=o.length,r("pushing buffer of length %s",o.length),e._reading=!1,e.push(o),0===e._missing&&e.push(null))}),e._piece+=1}}},n.prototype.destroy=function(e){this._destroy(null,e)},n.prototype._destroy=function(e,t){this.destroyed||(this.destroyed=!0,!this._torrent.destroyed&&this._torrent.deselect(this._startPiece,this._endPiece,!0),e&&this.emit("error",e),this.emit("close"),t&&t())}},{debug:87,inherits:96,"readable-stream":135}],184:[function(e,t){(function(n){function r(e,t){i.call(this),this._torrent=e,this._destroyed=!1,this.name=t.name,this.path=t.path,this.length=t.length,this.offset=t.offset,this.done=!1;var n=t.offset,r=n+t.length-1;this._startPiece=0|n/this._torrent.pieceLength,this._endPiece=0|r/this._torrent.pieceLength,0===this.length&&(this.done=!0,this.emit("done"))}t.exports=r;var o=e("end-of-stream"),i=e("events").EventEmitter,s=e("./file-stream"),d=e("inherits"),a=e("path"),l=e("readable-stream"),p=e("stream-with-known-length-to-buffer");d(r,i),Object.defineProperty(r.prototype,"downloaded",{get:function(){if(!this._torrent.bitfield)return 0;for(var e=0,t=this._startPiece;t<=this._endPiece;++t)if(this._torrent.bitfield.get(t))e+=this._torrent.pieceLength;else{var n=this._torrent.pieces[t];e+=n.length-n.missing}return e}}),Object.defineProperty(r.prototype,"progress",{get:function(){return this.length?this.downloaded/this.length:0}}),r.prototype.select=function(e){0===this.length||this._torrent.select(this._startPiece,this._endPiece,e)},r.prototype.deselect=function(){0===this.length||this._torrent.deselect(this._startPiece,this._endPiece,!1)},r.prototype.createReadStream=function(e){var t=this;if(0===this.length){var r=new l.PassThrough;return n.nextTick(function(){r.end()}),r}var i=new s(t,e);return t._torrent.select(i._startPiece,i._endPiece,!0,function(){i._notify()}),o(i,function(){t._destroyed||!t._torrent.destroyed&&t._torrent.deselect(i._startPiece,i._endPiece,!0)}),i},r.prototype.getBuffer=function(e){p(this.createReadStream(),this.length,e)},r.prototype._destroy=function(){this._destroyed=!0,this._torrent=null}}).call(this,e("_process"))},{"./file-stream":183,_process:15,"end-of-stream":90,events:7,inherits:96,path:13,"readable-stream":135,"stream-with-known-length-to-buffer":150}],185:[function(e,t,n){function r(e,t){var n=this;n.id=e,n.type=t,s("new Peer %s",e),n.addr=null,n.conn=null,n.swarm=null,n.wire=null,n.connected=!1,n.destroyed=!1,n.timeout=null,n.retries=0,n.sentHandshake=!1}function o(){}var i=e("unordered-array-remove"),s=e("debug")("webtorrent:peer"),d=e("bittorrent-protocol"),a=e("./webconn");n.createWebRTCPeer=function(e,t){var n=new r(e.id,"webrtc");return n.conn=e,n.swarm=t,n.conn.connected?n.onConnect():(n.conn.once("connect",function(){n.onConnect()}),n.conn.once("error",function(e){n.destroy(e)}),n.startConnectTimeout()),n},n.createTCPIncomingPeer=function(e){var t=e.remoteAddress+":"+e.remotePort,n=new r(t,"tcpIncoming");return n.conn=e,n.addr=t,n.onConnect(),n},n.createTCPOutgoingPeer=function(e,t){var n=new r(e,"tcpOutgoing");return n.addr=e,n.swarm=t,n},n.createWebSeedPeer=function(e,t){var n=new r(e,"webSeed");return n.swarm=t,n.conn=new a(e,t),n.onConnect(),n},r.prototype.onConnect=function(){var e=this;if(!e.destroyed){e.connected=!0,s("Peer %s connected",e.id),clearTimeout(e.connectTimeout);var t=e.conn;t.once("end",function(){e.destroy()}),t.once("close",function(){e.destroy()}),t.once("finish",function(){e.destroy()}),t.once("error",function(t){e.destroy(t)});var n=e.wire=new d;n.type=e.type,n.once("end",function(){e.destroy()}),n.once("close",function(){e.destroy()}),n.once("finish",function(){e.destroy()}),n.once("error",function(t){e.destroy(t)}),n.once("handshake",function(t,n){e.onHandshake(t,n)}),e.startHandshakeTimeout(),t.pipe(n).pipe(t),e.swarm&&!e.sentHandshake&&e.handshake()}},r.prototype.onHandshake=function(e,t){var n=this;if(n.swarm&&!n.destroyed){if(n.swarm.destroyed)return n.destroy(new Error("swarm already destroyed"));if(e!==n.swarm.infoHash)return n.destroy(new Error("unexpected handshake info hash for this swarm"));if(t===n.swarm.peerId)return n.destroy(new Error("refusing to connect to ourselves"));s("Peer %s got handshake %s",n.id,e),clearTimeout(n.handshakeTimeout),n.retries=0;var r=n.addr;!r&&n.conn.remoteAddress&&(r=n.conn.remoteAddress+":"+n.conn.remotePort),n.swarm._onWire(n.wire,r),n.swarm&&!n.swarm.destroyed&&(n.sentHandshake||n.handshake())}},r.prototype.handshake=function(){var e=this,t={dht:!e.swarm.private&&!!e.swarm.client.dht};e.wire.handshake(e.swarm.infoHash,e.swarm.client.peerId,t),e.sentHandshake=!0},r.prototype.startConnectTimeout=function(){var e=this;clearTimeout(e.connectTimeout),e.connectTimeout=setTimeout(function(){e.destroy(new Error("connect timeout"))},"webrtc"===e.type?25000:5e3),e.connectTimeout.unref&&e.connectTimeout.unref()},r.prototype.startHandshakeTimeout=function(){var e=this;clearTimeout(e.handshakeTimeout),e.handshakeTimeout=setTimeout(function(){e.destroy(new Error("handshake timeout"))},25000),e.handshakeTimeout.unref&&e.handshakeTimeout.unref()},r.prototype.destroy=function(e){var t=this;if(!t.destroyed){t.destroyed=!0,t.connected=!1,s("destroy %s (error: %s)",t.id,e&&(e.message||e)),clearTimeout(t.connectTimeout),clearTimeout(t.handshakeTimeout);var n=t.swarm,r=t.conn,d=t.wire;t.swarm=null,t.conn=null,t.wire=null,n&&d&&i(n.wires,n.wires.indexOf(d)),r&&(r.on("error",o),r.destroy()),d&&d.destroy(),n&&n.removePeer(t.id)}}},{"./webconn":188,"bittorrent-protocol":74,debug:87,"unordered-array-remove":160}],186:[function(e,t){function n(e){var t=this;t._torrent=e,t._numPieces=e.pieces.length,t._pieces=[],t._onWire=function(e){t.recalculate(),t._initWire(e)},t._onWireHave=function(e){t._pieces[e]+=1},t._onWireBitfield=function(){t.recalculate()},t._torrent.wires.forEach(function(e){t._initWire(e)}),t._torrent.on("wire",t._onWire),t.recalculate()}function r(){return!0}t.exports=n,n.prototype.getRarestPiece=function(e){e||(e=r);for(var t=[],n=Infinity,o=0;o<this._numPieces;++o)if(e(o)){var i=this._pieces[o];i===n?t.push(o):i<n&&(t=[o],n=i)}return 0<t.length?t[0|Math.random()*t.length]:-1},n.prototype.destroy=function(){var e=this;e._torrent.removeListener("wire",e._onWire),e._torrent.wires.forEach(function(t){e._cleanupWireEvents(t)}),e._torrent=null,e._pieces=null,e._onWire=null,e._onWireHave=null,e._onWireBitfield=null},n.prototype._initWire=function(e){var t=this;e._onClose=function(){t._cleanupWireEvents(e);for(var n=0;n<this._numPieces;++n)t._pieces[n]-=e.peerPieces.get(n)},e.on("have",t._onWireHave),e.on("bitfield",t._onWireBitfield),e.once("close",e._onClose)},n.prototype.recalculate=function(){var e;for(e=0;e<this._numPieces;++e)this._pieces[e]=0;var t=this._torrent.wires.length;for(e=0;e<t;++e)for(var n=this._torrent.wires[e],r=0;r<this._numPieces;++r)this._pieces[r]+=n.peerPieces.get(r)},n.prototype._cleanupWireEvents=function(e){e.removeListener("have",this._onWireHave),e.removeListener("bitfield",this._onWireBitfield),e._onClose&&e.removeListener("close",e._onClose),e._onClose=null}},{}],187:[function(n,r){(function(o,i){function s(e,t,n){_.call(this),this._debugId="unknown infohash",this.client=t,this.announce=n.announce,this.urlList=n.urlList,this.path=n.path,this._store=k,this._getAnnounceOpts=n.getAnnounceOpts,this.strategy=n.strategy||"sequential",this.maxWebConns=n.maxWebConns||4,this._rechokeNumSlots=!1===n.uploads||0===n.uploads?0:+n.uploads||10,this._rechokeOptimisticWire=null,this._rechokeOptimisticTime=0,this._rechokeIntervalId=null,this.ready=!1,this.destroyed=!1,this.paused=!1,this.done=!1,this.metadata=null,this.store=n.store,this.bitfield=n.bitfield,this.files=[],this.pieces=[],this._amInterested=!1,this._selections=[],this._critical=[],this.wires=[],this._queue=[],this._peers={},this._peersLength=0,this.received=0,this.uploaded=0,this._downloadSpeed=M(),this._uploadSpeed=M(),this._servers=[],this._xsRequests=[],this._fileModtimes=n.fileModtimes,null!==e&&this._onTorrentId(e),this._debug("new torrent")}function a(e,n){return 2+t(n*e.downloadSpeed()/P.BLOCK_LENGTH)}function l(e,n,r){return 1+t(n*e.downloadSpeed()/r)}function p(e){return 0|Math.random()*e}function c(){}r.exports=s;var u=n("addr-to-ip-port"),f=n("bitfield"),h=n("chunk-store-stream/write"),g=n("debug")("webtorrent:torrent"),m=n("torrent-discovery"),_=n("events").EventEmitter,y=n("xtend"),b=n("xtend/mutable"),w=n("fs"),k=n("fs-chunk-store"),x=n("simple-get"),v=n("immediate-chunk-store"),S=n("inherits"),C=n("multistream"),E=n("net"),T=n("os"),I=n("run-parallel"),L=n("run-parallel-limit"),B=n("parse-torrent"),R=n("path"),P=n("torrent-piece"),A=n("pump"),U=n("random-iterate"),O=n("rusha"),M=n("speedometer"),q=n("uniq"),j=n("ut_metadata"),H=n("ut_pex"),D=n("./file"),N=n("./peer"),W=n("./rarity-map"),z=n("./server"),F=5e3,V=3*P.BLOCK_LENGTH,G=1,K=2,X=[1000,5000,15000],Y=n("../package.json").version,Q="WebTorrent/"+Y+" (https://webtorrent.io)",J;try{J=R.join(w.statSync("/tmp")&&"/tmp","webtorrent")}catch(e){J=R.join("function"==typeof T.tmpdir?T.tmpdir():"/","webtorrent")}S(s,_),Object.defineProperty(s.prototype,"timeRemaining",{get:function(){return this.done?0:0===this.downloadSpeed?Infinity:1e3*((this.length-this.downloaded)/this.downloadSpeed)}}),Object.defineProperty(s.prototype,"downloaded",{get:function(){if(!this.bitfield)return 0;for(var e=0,t=0,n=this.pieces.length;t<n;++t)if(this.bitfield.get(t))e+=t===n-1?this.lastPieceLength:this.pieceLength;else{var r=this.pieces[t];e+=r.length-r.missing}return e}}),Object.defineProperty(s.prototype,"downloadSpeed",{get:function(){return this._downloadSpeed()}}),Object.defineProperty(s.prototype,"uploadSpeed",{get:function(){return this._uploadSpeed()}}),Object.defineProperty(s.prototype,"progress",{get:function(){return this.length?this.downloaded/this.length:0}}),Object.defineProperty(s.prototype,"ratio",{get:function(){return this.uploaded/(this.received||1)}}),Object.defineProperty(s.prototype,"numPeers",{get:function(){return this.wires.length}}),Object.defineProperty(s.prototype,"torrentFileBlobURL",{get:function(){if("undefined"==typeof window)throw new Error("browser-only property");return this.torrentFile?URL.createObjectURL(new Blob([this.torrentFile],{type:"application/x-bittorrent"})):null}}),Object.defineProperty(s.prototype,"_numQueued",{get:function(){return this._queue.length+(this._peersLength-this._numConns)}}),Object.defineProperty(s.prototype,"_numConns",{get:function(){var e=this,t=0;for(var n in e._peers)e._peers[n].connected&&(t+=1);return t}}),Object.defineProperty(s.prototype,"swarm",{get:function(){return console.warn("WebTorrent: `torrent.swarm` is deprecated. Use `torrent` directly instead."),this}}),s.prototype._onTorrentId=function(e){var t=this;if(!t.destroyed){var n;try{n=B(e)}catch(e){}n?(t.infoHash=n.infoHash,t._debugId=n.infoHash.toString("hex").substring(0,7),o.nextTick(function(){t.destroyed||t._onParsedTorrent(n)})):B.remote(e,function(e,n){return t.destroyed?void 0:e?t._destroy(e):void t._onParsedTorrent(n)})}},s.prototype._onParsedTorrent=function(e){var t=this;if(!t.destroyed){if(t._processParsedTorrent(e),!t.infoHash)return t._destroy(new Error("Malformed torrent data: No info hash"));(t.path||(t.path=R.join(J,t.infoHash)),t._rechokeIntervalId=setInterval(function(){t._rechoke()},1e4),t._rechokeIntervalId.unref&&t._rechokeIntervalId.unref(),t.emit("_infoHash",t.infoHash),!t.destroyed)&&(t.emit("infoHash",t.infoHash),t.destroyed||(t.client.listening?t._onListening():t.client.once("listening",function(){t._onListening()})))}},s.prototype._processParsedTorrent=function(e){this._debugId=e.infoHash.toString("hex").substring(0,7),this.announce&&(e.announce=e.announce.concat(this.announce)),this.client.tracker&&i.WEBTORRENT_ANNOUNCE&&!this.private&&(e.announce=e.announce.concat(i.WEBTORRENT_ANNOUNCE)),this.urlList&&(e.urlList=e.urlList.concat(this.urlList)),q(e.announce),q(e.urlList),b(this,e),this.magnetURI=B.toMagnetURI(e),this.torrentFile=B.toTorrentFile(e)},s.prototype._onListening=function(){function t(e){s._destroy(e)}function n(e){"string"==typeof e&&s.done||s.addPeer(e)}function r(){s.emit("trackerAnnounce"),0===s.numPeers&&s.emit("noPeers","tracker")}function o(){s.emit("dhtAnnounce"),0===s.numPeers&&s.emit("noPeers","dht")}function i(e){s.emit("warning",e)}var s=this;if(!(s.discovery||s.destroyed)){var d=s.client.tracker;d&&(d=y(s.client.tracker,{getAnnounceOpts:function(){var t={uploaded:s.uploaded,downloaded:s.downloaded,left:e(s.length-s.downloaded,0)};return s.client.tracker.getAnnounceOpts&&b(t,s.client.tracker.getAnnounceOpts()),s._getAnnounceOpts&&b(t,s._getAnnounceOpts()),t}})),s.discovery=new m({infoHash:s.infoHash,announce:s.announce,peerId:s.client.peerId,dht:!s.private&&s.client.dht,tracker:d,port:s.client.torrentPort,userAgent:Q}),s.discovery.on("error",t),s.discovery.on("peer",n),s.discovery.on("trackerAnnounce",r),s.discovery.on("dhtAnnounce",o),s.discovery.on("warning",i),s.info?s._onMetadata(s):s.xs&&s._getMetadataFromServer()}},s.prototype._getMetadataFromServer=function(){function e(e,n){function r(r,o,i){if(t.destroyed)return n(null);if(t.metadata)return n(null);if(r)return t.emit("warning",new Error("http error from xs param: "+e)),n(null);if(200!==o.statusCode)return t.emit("warning",new Error("non-200 status code "+o.statusCode+" from xs param: "+e)),n(null);var s;try{s=B(i)}catch(e){}return s?s.infoHash===t.infoHash?void(t._onMetadata(s),n(null)):(t.emit("warning",new Error("got torrent file with incorrect info hash from xs param: "+e)),n(null)):(t.emit("warning",new Error("got invalid torrent file from xs param: "+e)),n(null))}if(0!==e.indexOf("http://")&&0!==e.indexOf("https://"))return t.emit("warning",new Error("skipping non-http xs param: "+e)),n(null);var o;try{o=x.concat({url:e,method:"GET",headers:{"user-agent":Q}},r)}catch(r){return t.emit("warning",new Error("skipping invalid url xs param: "+e)),n(null)}t._xsRequests.push(o)}var t=this,n=Array.isArray(t.xs)?t.xs:[t.xs],r=n.map(function(t){return function(n){e(t,n)}});I(r)},s.prototype._onMetadata=function(e){var t=this;if(!(t.metadata||t.destroyed)){t._debug("got metadata"),t._xsRequests.forEach(function(e){e.abort()}),t._xsRequests=[];var n;if(e&&e.infoHash)n=e;else try{n=B(e)}catch(e){return t._destroy(e)}t._processParsedTorrent(n),t.metadata=t.torrentFile,t.client.enableWebSeeds&&t.urlList.forEach(function(e){t.addWebSeed(e)}),t._rarityMap=new W(t),t.files=t.files.map(function(e){return new D(t,e)}),t._hashes=t.pieces,t.pieces=t.pieces.map(function(e,n){var r=n===t.pieces.length-1?t.lastPieceLength:t.pieceLength;return new P(r)}),t._reservations=t.pieces.map(function(){return[]}),t.wires.forEach(function(e){e.ut_metadata&&e.ut_metadata.setMetadata(t.metadata),t._onWireWithMetadata(e)}),t._debug("verifying existing torrent data"),t._fileModtimes&&t._store===k?t.getFileModtimes(function(e,n){if(e)return t._destroy(e);var r=t.files.map(function(e,r){return n[r]===t._fileModtimes[r]}).every(function(e){return e});if(r){for(var o=0;o<t.pieces.length;o++)t._markVerified(o);t._onStore()}else t._verifyPieces()}):t._verifyPieces(),t.emit("metadata")}},s.prototype.getFileModtimes=function(e){var t=this,n=[];L(t.files.map(function(e,r){return function(o){w.stat(R.join(t.path,e.path),function(e,t){return e&&"ENOENT"!==e.code?o(e):void(n[r]=t&&t.mtime.getTime(),o(null))})}}),K,function(r){t._debug("done getting file modtimes"),e(r,n)})},s.prototype._verifyPieces=function(){var e=this;L(e.pieces.map(function(t,n){return function(t){return e.destroyed?t(new Error("torrent is destroyed")):void e.store.get(n,function(r,i){if(e.destroyed)return t(new Error("torrent is destroyed"));if(r)return o.nextTick(t,null);var s=O.createHash().update(i).digest("hex");if(e.destroyed)return t(new Error("torrent is destroyed"));if(s===e._hashes[n]){if(!e.pieces[n])return;e._debug("piece verified %s",n),e._markVerified(n)}else e._debug("piece invalid %s",n);t(null)})}}),K,function(t){return t?e._destroy(t):void(e._debug("done verifying"),e._onStore())})},s.prototype._markVerified=function(e){this.pieces[e]=null,this._reservations[e]=null,this.bitfield.get(e)||this.emit("piecefromtorrent",e),this.bitfield.set(e,!0)},s.prototype._onStore=function(){var e=this;e.destroyed||(e._debug("on store"),e.ready=!0,e.emit("ready"),e._checkDone(),e._updateSelections())},s.prototype.destroy=function(e){var t=this;t._destroy(null,e)},s.prototype._destroy=function(e,t){var n=this;if(!n.destroyed){for(var r in n.destroyed=!0,n._debug("destroy"),n.client._remove(n),clearInterval(n._rechokeIntervalId),n._xsRequests.forEach(function(e){e.abort()}),n._rarityMap&&n._rarityMap.destroy(),n._peers)n.removePeer(r);n.files.forEach(function(e){e instanceof D&&e._destroy()});var o=n._servers.map(function(e){return function(t){e.destroy(t)}});n.discovery&&o.push(function(e){n.discovery.destroy(e)}),n.store&&o.push(function(e){n.store.close(e)}),I(o,t),e&&(0===n.listenerCount("error")?n.client.emit("error",e):n.emit("error",e)),n.emit("close"),n.client=null,n.files=[],n.discovery=null,n.store=null,n._rarityMap=null,n._peers=null,n._servers=null,n._xsRequests=null}},s.prototype.addPeer=function(e){var t=this;if(t.destroyed)throw new Error("torrent is destroyed");if(!t.infoHash)throw new Error("addPeer() must not be called before the `infoHash` event");if(t.client.blocked){var n;if("string"==typeof e){var r;try{r=u(e)}catch(n){return t._debug("ignoring peer: invalid %s",e),t.emit("invalidPeer",e),!1}n=r[0]}else"string"==typeof e.remoteAddress&&(n=e.remoteAddress);if(n&&t.client.blocked.contains(n))return t._debug("ignoring peer: blocked %s",e),"string"!=typeof e&&e.destroy(),t.emit("blockedPeer",e),!1}var o=!!t._addPeer(e);return o?t.emit("peer",e):t.emit("invalidPeer",e),o},s.prototype._addPeer=function(e){var t=this;if(t.destroyed)return"string"!=typeof e&&e.destroy(),null;if("string"==typeof e&&!t._validAddr(e))return t._debug("ignoring peer: invalid %s",e),null;var n=e&&e.id||e;if(t._peers[n])return t._debug("ignoring peer: duplicate (%s)",n),"string"!=typeof e&&e.destroy(),null;if(t.paused)return t._debug("ignoring peer: torrent is paused"),"string"!=typeof e&&e.destroy(),null;t._debug("add peer %s",n);var r;return r="string"==typeof e?N.createTCPOutgoingPeer(e,t):N.createWebRTCPeer(e,t),t._peers[r.id]=r,t._peersLength+=1,"string"==typeof e&&(t._queue.push(r),t._drain()),r},s.prototype.addWebSeed=function(e){if(this.destroyed)throw new Error("torrent is destroyed");if(!/^https?:\/\/.+/.test(e))return this.emit("warning",new Error("ignoring invalid web seed: "+e)),void this.emit("invalidPeer",e);if(this._peers[e])return this.emit("warning",new Error("ignoring duplicate web seed: "+e)),void this.emit("invalidPeer",e);this._debug("add web seed %s",e);var t=N.createWebSeedPeer(e,this);this._peers[t.id]=t,this._peersLength+=1,this.emit("peer",e)},s.prototype._addIncomingPeer=function(e){var t=this;return t.destroyed?e.destroy(new Error("torrent is destroyed")):t.paused?e.destroy(new Error("torrent is paused")):void(this._debug("add incoming peer %s",e.id),t._peers[e.id]=e,t._peersLength+=1)},s.prototype.removePeer=function(e){var t=this,n=e&&e.id||e;e=t._peers[n];e&&(this._debug("removePeer %s",n),delete t._peers[n],t._peersLength-=1,e.destroy(),t._drain())},s.prototype.select=function(e,t,n,r){var o=this;if(o.destroyed)throw new Error("torrent is destroyed");if(0>e||t<e||o.pieces.length<=t)throw console.log("start:"+e+"end:"+t+"length:"+o.pieces.length),new Error("invalid selection ",e,":",t);n=+n||0,o._debug("select %s-%s (priority %s)",e,t,n),o._selections.push({from:e,to:t,offset:0,priority:n,notify:r||c}),o._selections.sort(function(e,t){return t.priority-e.priority}),o._updateSelections()},s.prototype.deselect=function(e,t,n){var r=this;if(r.destroyed)throw new Error("torrent is destroyed");n=+n||0,r._debug("deselect %s-%s (priority %s)",e,t,n);for(var o=0,i;o<r._selections.length;++o)if(i=r._selections[o],i.from===e&&i.to===t&&i.priority===n){r._selections.splice(o,1);break}r._updateSelections()},s.prototype.critical=function(e,t){var n=this;if(n.destroyed)throw new Error("torrent is destroyed");n._debug("critical %s-%s",e,t);for(var r=e;r<=t;++r)n._critical[r]=!0;n._updateSelections()},s.prototype._onWire=function(e,t){var n=this;if(n._debug("got wire %s (%s)",e._debugId,t||"Unknown"),e.on("download",function(e){n.destroyed||(n.received+=e,n._downloadSpeed(e),n.client._downloadSpeed(e),n.emit("download",e),n.client.emit("download",e))}),e.on("upload",function(e){n.destroyed||(n.uploaded+=e,n._uploadSpeed(e),n.client._uploadSpeed(e),n.emit("upload",e),n.client.emit("upload",e))}),n.wires.push(e),t){var r=u(t);e.remoteAddress=r[0],e.remotePort=r[1]}n.client.dht&&n.client.dht.listening&&e.on("port",function(r){return n.destroyed||n.client.dht.destroyed?void 0:e.remoteAddress?0===r||65536<r?n._debug("ignoring invalid PORT from peer"):void(n._debug("port: %s (from %s)",r,t),n.client.dht.addNode({host:e.remoteAddress,port:r})):n._debug("ignoring PORT from peer with no address")}),e.on("timeout",function(){n._debug("wire timeout (%s)",t),e.destroy()}),e.setTimeout(3e4,!0),e.setKeepAlive(!0),e.use(j(n.metadata)),e.ut_metadata.on("warning",function(e){n._debug("ut_metadata warning: %s",e.message)}),n.metadata||(e.ut_metadata.on("metadata",function(e){n._debug("got metadata via ut_metadata"),n._onMetadata(e)}),e.ut_metadata.fetch()),"function"!=typeof H||n.private||(e.use(H()),e.ut_pex.on("peer",function(e){n.done||(n._debug("ut_pex: got peer: %s (from %s)",e,t),n.addPeer(e))}),e.ut_pex.on("dropped",function(e){var r=n._peers[e];r&&!r.connected&&(n._debug("ut_pex: dropped peer: %s (from %s)",e,t),n.removePeer(e))}),e.once("close",function(){e.ut_pex.reset()})),n.emit("wire",e,t),n.metadata&&o.nextTick(function(){n._onWireWithMetadata(e)})},s.prototype._onWireWithMetadata=function(e){function t(){r.destroyed||e.destroyed||(r._numQueued>2*(r._numConns-r.numPeers)&&e.amInterested?e.destroy():(o=setTimeout(t,F),o.unref&&o.unref()))}function n(){if(e.peerPieces.buffer.length===r.bitfield.buffer.length){for(s=0;s<r.pieces.length;++s)if(!e.peerPieces.get(s))return;e.isSeeder=!0,e.choke()}}var r=this,o=null,s;e.on("bitfield",function(){n(),r._update()}),e.on("have",function(){n(),r._update()}),e.once("interested",function(){e.unchoke()}),e.once("close",function(){clearTimeout(o)}),e.on("choke",function(){clearTimeout(o),o=setTimeout(t,F),o.unref&&o.unref()}),e.on("unchoke",function(){clearTimeout(o),r._update()}),e.on("request",function(t,n,o,i){return o>131072?e.destroy():void(r.pieces[t]||r.store.get(t,{offset:n,length:o},i))}),e.bitfield(r.bitfield),e.interested(),e.peerExtensions.dht&&r.client.dht&&r.client.dht.listening&&e.port(r.client.dht.address().port),"webSeed"!==e.type&&(o=setTimeout(t,F),o.unref&&o.unref()),e.isSeeder=!1,n()},s.prototype._updateSelections=function(){var e=this;!e.ready||e.destroyed||(o.nextTick(function(){e._gcSelections()}),e._updateInterest(),e._update())},s.prototype._gcSelections=function(){for(var e=this,t=0;t<e._selections.length;++t){for(var n=e._selections[t],r=n.offset;e.bitfield.get(n.from+n.offset)&&n.from+n.offset<n.to;)n.offset+=1;r!==n.offset&&n.notify(),n.to===n.from+n.offset&&e.bitfield.get(n.from+n.offset)&&(e._selections.splice(t,1),t-=1,n.notify(),e._updateInterest())}e._selections.length||e.emit("idle")},s.prototype._updateInterest=function(){var e=this,t=e._amInterested;e._amInterested=!!e._selections.length,e.wires.forEach(function(t){e._amInterested?t.interested():t.uninterested()});t===e._amInterested||(e._amInterested?e.emit("interested"):e.emit("uninterested"))},s.prototype._update=function(){var e=this;if(!e.destroyed)for(var t=U(e.wires),n;n=t();)e._updateWire(n)},s.prototype._updateWire=function(t){function n(e,n,r,o){return function(s){return s>=e&&s<=n&&!(s in r)&&t.peerPieces.get(s)&&(!o||o(s))}}function r(){if(!t.requests.length)for(var e=d._selections.length;e--;){var r=d._selections[e],o;if("rarest"===d.strategy)for(var i=r.from+r.offset,s=r.to,a={},l=0,p=n(i,s,a);l<s-i+1&&(o=d._rarityMap.getRarestPiece(p),!(0>o));){if(d._request(t,o,!1))return;a[o]=!0,l+=1}else for(o=r.to;o>=r.from+r.offset;--o)if(t.peerPieces.get(o)&&d._request(t,o,!1))return}}function o(){var n=t.downloadSpeed()||1;if(n>V)return function(){return!0};var r=e(1,t.requests.length)*P.BLOCK_LENGTH/n,o=10,i=0;return function(e){if(!o||d.bitfield.get(e))return!0;for(var t=d.pieces[e].missing;i<d.wires.length;i++){var s=d.wires[i],a=s.downloadSpeed();if(!(a<V)&&!(a<=n)&&s.peerPieces.get(e)&&!(0<(t-=a*r)))return o--,!1}return!0}}function s(e){for(var t=e,n=e;n<d._selections.length&&d._selections[n].priority;n++)t=n;var r=d._selections[e];d._selections[e]=d._selections[t],d._selections[t]=r}function i(e){if(t.requests.length>=p)return!0;for(var r=o(),a=0;a<d._selections.length;a++){var i=d._selections[a],l;if("rarest"===d.strategy)for(var c=i.from+i.offset,u=i.to,f={},h=0,g=n(c,u,f,r);h<u-c+1&&(l=d._rarityMap.getRarestPiece(g),!(0>l));){for(;d._request(t,l,d._critical[l]||e););if(t.requests.length<p){f[l]=!0,h++;continue}return i.priority&&s(a),!0}else for(l=i.from+i.offset;l<=i.to;l++)if(t.peerPieces.get(l)&&r(l)){for(;d._request(t,l,d._critical[l]||e););if(!(t.requests.length<p))return i.priority&&s(a),!0}}return!1}var d=this;if(!t.peerChoking){if(!t.downloaded)return r();var l=a(t,0.5);if(!(t.requests.length>=l)){var p=a(t,G);i(!1)||i(!0)}}},s.prototype._rechoke=function(){function e(e,t){return e.downloadSpeed===t.downloadSpeed?e.uploadSpeed===t.uploadSpeed?e.wire.amChoking===t.wire.amChoking?e.salt-t.salt:e.wire.amChoking?1:-1:t.uploadSpeed-e.uploadSpeed:t.downloadSpeed-e.downloadSpeed}var t=this;if(t.ready){0<t._rechokeOptimisticTime?t._rechokeOptimisticTime-=1:t._rechokeOptimisticWire=null;var n=[];t.wires.forEach(function(e){e.isSeeder||e===t._rechokeOptimisticWire||n.push({wire:e,downloadSpeed:e.downloadSpeed(),uploadSpeed:e.uploadSpeed(),salt:Math.random(),isChoked:!0})}),n.sort(e);for(var r=0,o=0;o<n.length&&r<t._rechokeNumSlots;++o)n[o].isChoked=!1,n[o].wire.peerInterested&&(r+=1);if(!t._rechokeOptimisticWire&&o<n.length&&t._rechokeNumSlots){var i=n.slice(o).filter(function(e){return e.wire.peerInterested}),s=i[p(i.length)];s&&(s.isChoked=!1,t._rechokeOptimisticWire=s.wire,t._rechokeOptimisticTime=2)}n.forEach(function(e){e.wire.amChoking!==e.isChoked&&(e.isChoked?e.wire.choke():e.wire.unchoke())})}},s.prototype._hotswap=function(e,t){var n=this,o=e.downloadSpeed();if(o<P.BLOCK_LENGTH)return!1;if(!n._reservations[t])return!1;var s=n._reservations[t];if(!s)return!1;var d=Infinity,a,l;for(l=0;l<s.length;l++){var i=s[l];if(i&&i!==e){var p=i.downloadSpeed();p>=V||2*p>o||p>d||(a=i,d=p)}}if(!a)return!1;for(l=0;l<s.length;l++)s[l]===a&&(s[l]=null);for(l=0;l<a.requests.length;l++){var c=a.requests[l];c.piece===t&&n.pieces[t].cancel(0|c.offset/P.BLOCK_LENGTH)}return n.emit("hotswap",a,e,t),!0},s.prototype._request=function(e,t,n){function s(){o.nextTick(function(){p._update()})}var p=this,c=e.requests.length,u="webSeed"===e.type;if(p.bitfield.get(t))return!1;var f=u?d(l(e,G,p.pieceLength),p.maxWebConns):a(e,G);if(c>=f)return!1;var h=p.pieces[t],g=u?h.reserveRemaining():h.reserve();if(-1===g&&n&&p._hotswap(e,t)&&(g=u?h.reserveRemaining():h.reserve()),-1===g)return!1;var m=p._reservations[t];m||(m=p._reservations[t]=[]);var r=m.indexOf(null);-1===r&&(r=m.length),m[r]=e;var i=h.chunkOffset(g),_=u?h.chunkLengthRemaining(g):h.chunkLength(g);return e.request(t,i,_,function n(o,d){if(!p.destroyed){if(!p.ready)return p.once("ready",function(){n(o,d)});if(m[r]===e&&(m[r]=null),h!==p.pieces[t])return s();if(o)return p._debug("error getting piece %s (offset: %s length: %s) from %s: %s",t,i,_,e.remoteAddress+":"+e.remotePort,o.message),u?h.cancelRemaining(g):h.cancel(g),void s();if(p._debug("got piece %s (offset: %s length: %s) from %s",t,i,_,e.remoteAddress+":"+e.remotePort),!h.set(g,d,e))return s();var a=h.flush(),l=O.createHash().update(a).digest("hex");if(!p.destroyed){if(l===p._hashes[t]){if(!p.pieces[t])return;p._debug("piece verified %s",t),p.pieces[t]=null,p._reservations[t]=null,p.bitfield.get(t)||p.emit("piecefromtorrent",t),p.bitfield.set(t,!0),p.store.put(t,a),p.wires.forEach(function(e){e.have(t)}),p._checkDone()&&!p.destroyed&&p.discovery.complete()}else p.pieces[t]=new P(h.length),p.emit("warning",new Error("Piece "+t+" failed verification"));s()}}}),!0},s.prototype._checkDone=function(){var e=this;if(!e.destroyed){e.files.forEach(function(t){if(!t.done){for(var n=t._startPiece;n<=t._endPiece;++n)if(!e.bitfield.get(n))return;t.done=!0,t.emit("done"),e._debug("file done: "+t.name)}});for(var t=!0,n=0,r;n<e._selections.length;n++){r=e._selections[n];for(var o=r.from;o<=r.to;o++)if(!e.bitfield.get(o)){t=!1;break}if(!t)break}return!e.done&&t&&(e.done=!0,e._debug("torrent done: "+e.infoHash),e.emit("done")),e._gcSelections(),t}},s.prototype.load=function(e,t){var n=this;if(n.destroyed)throw new Error("torrent is destroyed");if(!n.ready)return n.once("ready",function(){n.load(e,t)});Array.isArray(e)||(e=[e]),t||(t=c);var r=new C(e),o=new h(n.store,n.pieceLength);A(r,o,function(e){return e?t(e):void(n.pieces.forEach(function(e,t){n.pieces[t]=null,n._reservations[t]=null,n.bitfield.get(t)||n.emit("piecefromtorrent",t),n.bitfield.set(t,!0)}),n._checkDone(),t(null))})},s.prototype.createServer=function(e){if("function"!=typeof z)throw new Error("node.js-only method");if(this.destroyed)throw new Error("torrent is destroyed");var t=new z(this,e);return this._servers.push(t),t},s.prototype.pause=function(){this.destroyed||(this._debug("pause"),this.paused=!0)},s.prototype.resume=function(){this.destroyed||(this._debug("resume"),this.paused=!1,this._drain())},s.prototype._debug=function(){var e=[].slice.call(arguments);e[0]="["+this.client._debugId+"] ["+this._debugId+"] "+e[0],g.apply(null,e)},s.prototype._drain=function(){var e=this;if(this._debug("_drain numConns %s maxConns %s",e._numConns,e.client.maxConns),!("function"!=typeof E.connect||e.destroyed||e.paused||e._numConns>=e.client.maxConns)){this._debug("drain (%s queued, %s/%s peers)",e._numQueued,e.numPeers,e.client.maxConns);var t=e._queue.shift();if(t){this._debug("tcp connect attempt to %s",t.addr);var n=u(t.addr),r={host:n[0],port:n[1]},o=t.conn=E.connect(r);o.once("connect",function(){t.onConnect()}),o.once("error",function(e){t.destroy(e)}),t.startConnectTimeout(),o.on("close",function(){if(!e.destroyed){if(t.retries>=X.length)return void e._debug("conn %s closed: will not re-add (max %s attempts)",t.addr,X.length);var n=X[t.retries];e._debug("conn %s closed: will re-add to queue in %sms (attempt %s)",t.addr,n,t.retries+1);var r=setTimeout(function(){var n=e._addPeer(t.addr);n&&(n.retries=t.retries+1)},n);r.unref&&r.unref()}})}}},s.prototype._validAddr=function(e){var t;try{t=u(e)}catch(t){return!1}var n=t[0],r=t[1];return 0<r&&65535>r&&("127.0.0.1"!==n||r!==this.client.torrentPort)}}).call(this,n("_process"),"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global)},{"../package.json":191,"./file":184,"./peer":185,"./rarity-map":186,"./server":3,_process:15,"addr-to-ip-port":42,bitfield:73,"chunk-store-stream/write":83,debug:87,events:7,fs:1,"fs-chunk-store":105,"immediate-chunk-store":95,inherits:96,multistream:113,net:3,os:3,"parse-torrent":120,path:13,pump:123,"random-iterate":124,"run-parallel":139,"run-parallel-limit":138,rusha:140,"simple-get":143,speedometer:147,"torrent-discovery":155,"torrent-piece":156,uniq:159,ut_metadata:161,ut_pex:3,xtend:174,"xtend/mutable":175}],188:[function(t,n){function r(e,t){c.call(this),this.url=e,this.webPeerId=p.createHash().update(e).digest("hex"),this._torrent=t,this._init()}n.exports=r;var o=t("bitfield"),i=t("safe-buffer").Buffer,s=t("debug")("webtorrent:webconn"),a=t("simple-get"),l=t("inherits"),p=t("rusha"),c=t("bittorrent-protocol"),u=t("../package.json").version;l(r,c),r.prototype._init=function(){var e=this;e.setKeepAlive(!0),e.once("handshake",function(t){if(!e.destroyed){e.handshake(t,e.webPeerId);for(var n=e._torrent.pieces.length,r=new o(n),s=0;s<=n;s++)r.set(s,!0);e.bitfield(r)}}),e.once("interested",function(){s("interested"),e.unchoke()}),e.on("uninterested",function(){s("uninterested")}),e.on("choke",function(){s("choke")}),e.on("unchoke",function(){s("unchoke")}),e.on("bitfield",function(){s("bitfield")}),e.on("request",function(t,n,r,o){s("request pieceIndex=%d offset=%d length=%d",t,n,r),e.httpRequest(t,n,r,o)})},r.prototype.httpRequest=function(t,n,r,o){var l=this,p=t*l._torrent.pieceLength,c=p+n,f=c+r-1,h=l._torrent.files,g;if(1>=h.length)g=[{url:l.url,start:c,end:f}];else{var m=h.filter(function(e){return e.offset<=f&&e.offset+e.length>c});if(1>m.length)return o(new Error("Could not find file corresponnding to web seed range request"));g=m.map(function(t){var n=t.offset+t.length-1,r=l.url+("/"===l.url[l.url.length-1]?"":"/")+t.path;return{url:r,fileOffsetInRange:e(t.offset-c,0),start:e(c-t.offset,0),end:d(n,f-t.offset)}})}var _=0,y=!1,b;1<g.length&&(b=i.alloc(r)),g.forEach(function(e){function i(t,n){return 200>t.statusCode||300<=t.statusCode?(y=!0,o(new Error("Unexpected HTTP status code "+t.statusCode))):void(s("Got data of length %d",n.length),1===g.length?o(null,n):(n.copy(b,e.fileOffsetInRange),++_===g.length&&o(null,b)))}var d=e.url,l=e.start,p=e.end;s("Requesting url=%s pieceIndex=%d offset=%d length=%d start=%d end=%d",d,t,n,r,l,p);var c={url:d,method:"GET",headers:{"user-agent":"WebTorrent/"+u+" (https://webtorrent.io)",range:"bytes="+l+"-"+p}};a.concat(c,function(e,t,n){return y?void 0:e?"undefined"==typeof window||d.startsWith(window.location.origin+"/")?(y=!0,o(e)):a.head(d,function(t,n){return y?void 0:t?(y=!0,o(t)):200>n.statusCode||300<=n.statusCode?(y=!0,o(new Error("Unexpected HTTP status code "+n.statusCode))):n.url===d?(y=!0,o(e)):void(c.url=n.url,a.concat(c,function(e,t,n){return y?void 0:e?(y=!0,o(e)):void i(t,n)}))}):void i(t,n)})})},r.prototype.destroy=function(){c.prototype.destroy.call(this),this._torrent=null}},{"../package.json":191,bitfield:73,"bittorrent-protocol":74,debug:87,inherits:96,rusha:140,"safe-buffer":141,"simple-get":143}],189:[function(e,t){t.exports=function(e,t,r){function o(e){var t=new XMLHttpRequest;t.timeout=1500,t.open("head",e.uri),t.onload=function(){d++,e.time=performance.now()-p,200<=this.status&&300>this.status&&(a.push(e),l=t.getResponseHeader("content-length")),s()},t.ontimeout=function(){d++,n(e.uri+" timeout"),s()},t.onerror=function(){d++,s()},t.send()}function s(){if(d==r.end-r.start){a.sort(function(e,t){return e.time-t.time});for(var e=0;e<a.length;e++)n("node "+e+" capacity "+a[e].capacity);n("length: "+a.filter(function(e){return 5<=e.capacity}).length),t(a,l)}}var d=0,a=[],l=0;r?r.end>e.length&&(r.end=e.length):r={start:0,end:e.length};for(var p=performance.now(),c=r.start;c<r.end;++c)try{o(e[c])}catch(t){}};var n=e("debug")("pear:node-filter")},{debug:87}],190:[function(e,t){e("debug")("pear:node-scheduler");t.exports={IdleFirst:function(e,t){var n=e.filter(function(e){return!1===e.downloading});n.sort(function(e,t){return t.meanSpeed-e.meanSpeed});var r=e.filter(function(e){return!0===e.downloading&&1>=e.queue.length}).sort(function(e,t){return e.queue.length-t.queue.length});r.sort(function(e,t){return t.meanSpeed-e.meanSpeed});var o=n.concat(r);return o.length>t.windowLength&&(o=o.filter(function(e){return 0!==e.type})),o},WebRTCFirst:function(e,t){var n=e.filter(function(e){return!1===e.downloading}).sort(function(e,t){return t.type-e.type}),r=e.filter(function(e){return!0===e.downloading&&1>=e.queue.length}).sort(function(e,t){return e.queue.length-t.queue.length}),o=n.concat(r);return o.length>t.windowLength&&(o=o.filter(function(e){return 0!==e.type})),o},CloudFirst:function(e,t){var n=e.filter(function(e){return!1===e.downloading}).sort(function(e,t){return e.type-t.type}),r=e.filter(function(e){return!0===e.downloading&&1>=e.queue.length}).sort(function(e,t){return e.queue.length-t.queue.length}),o=n.concat(r);return o.length>t.windowLength&&(o=o.filter(function(e){return 0!==e.type})),o}}},{debug:87}],191:[function(e,t){t.exports={name:"webtorrent",description:"Streaming torrent client",version:"0.98.19",author:{name:"WebTorrent, LLC",email:"feross@webtorrent.io",url:"https://webtorrent.io"},browser:{"./lib/server.js":!1,"./lib/tcp-pool.js":!1,"bittorrent-dht/client":!1,"fs-chunk-store":"memory-chunk-store","load-ip-set":!1,net:!1,os:!1,ut_pex:!1},browserify:{transform:["package-json-versionify"]},bugs:{url:"https://github.com/webtorrent/webtorrent/issues"},dependencies:{"addr-to-ip-port":"^1.4.2",bitfield:"^1.1.2","bittorrent-dht":"^7.2.2","bittorrent-protocol":"^2.1.5","chunk-store-stream":"^2.0.2","create-torrent":"^3.24.5",debug:"^2.2.0","end-of-stream":"^1.1.0","fs-chunk-store":"^1.6.2","immediate-chunk-store":"^1.0.8",inherits:"^2.0.1","load-ip-set":"^1.2.7","memory-chunk-store":"^1.2.0",mime:"^1.3.4",multistream:"^2.0.5","package-json-versionify":"^1.0.2","parse-torrent":"^5.8.0",pump:"^1.0.1","random-iterate":"^1.0.1",randombytes:"^2.0.3","range-parser":"^1.2.0","readable-stream":"^2.1.4","render-media":"^2.8.0","run-parallel":"^1.1.6","run-parallel-limit":"^1.0.3","safe-buffer":"^5.0.1","simple-concat":"^1.0.0","simple-get":"^2.2.1","simple-peer":"^8.0.0","simple-sha1":"^2.0.8",speedometer:"^1.0.0","stream-to-blob":"^1.0.0","stream-to-blob-url":"^2.1.0","stream-with-known-length-to-buffer":"^1.0.0","torrent-discovery":"^8.1.0","torrent-piece":"^1.1.0",uniq:"^1.0.1","unordered-array-remove":"^1.0.2",ut_metadata:"^3.0.8",ut_pex:"^1.1.1",xtend:"^4.0.1","zero-fill":"^2.2.3"},devDependencies:{babili:"^0.1.4","bittorrent-tracker":"^9.0.0",brfs:"^1.4.3",browserify:"^14.0.0","cross-spawn":"^5.0.1","electron-prebuilt":"^0.37.8",finalhandler:"^1.0.0","network-address":"^1.1.0","run-series":"^1.1.4","serve-static":"^1.11.1",standard:"*",tape:"^4.6.0","webtorrent-fixtures":"^1.5.0",zuul:"^3.10.1"},engines:{node:">=4"},homepage:"https://webtorrent.io",keywords:["bittorrent","bittorrent client","download","mad science","p2p","peer-to-peer","peers","streaming","swarm","torrent","web torrent","webrtc","webrtc data","webtorrent"],license:"MIT",main:"index.js",repository:{type:"git",url:"git://github.com/webtorrent/webtorrent.git"},scripts:{build:"browserify -s WebTorrent -e ./ | babili > webtorrent.min.js","build-debug":"browserify -s WebTorrent -e ./ > webtorrent.debug.js",size:"npm run build && cat webtorrent.min.js | gzip | wc -c",test:"standard && node ./bin/test.js","test-browser":"zuul -- test/*.js test/browser/*.js","test-browser-headless":"zuul --electron -- test/*.js test/browser/*.js","test-browser-local":"zuul --local -- test/*.js test/browser/*.js","test-node":"tape test/*.js test/node/*.js","update-authors":"./bin/update-authors.sh"}}},{}],192:[function(e,t){(function(n,r){function o(e){function t(){i.destroyed||(i.ready=!0,i.emit("ready"))}var i=this;return i instanceof o?void(u.call(i),!e&&(e={}),i.peerId="string"==typeof e.peerId?e.peerId:d.isBuffer(e.peerId)?e.peerId.toString("hex"):d.from(T+w(9).toString("base64")).toString("hex"),i.peerIdBuffer=d.from(i.peerId,"hex"),i.nodeId="string"==typeof e.nodeId?e.nodeId:d.isBuffer(e.nodeId)?e.nodeId.toString("hex"):w(20).toString("hex"),i.nodeIdBuffer=d.from(i.nodeId,"hex"),i._debugId=i.peerId.toString("hex").substring(0,7),i.destroyed=!1,i.listening=!1,i.torrentPort=e.torrentPort||0,i.dhtPort=e.dhtPort||0,i.tracker=e.tracker===void 0?{}:e.tracker,i.torrents=[],i.maxConns=+e.maxConns||55,i._debug("new webtorrent (peerId %s, nodeId %s, port %s)",i.peerId,i.nodeId,i.torrentPort),i.tracker&&("object"!=typeof i.tracker&&(i.tracker={}),e.rtcConfig&&(console.warn("WebTorrent: opts.rtcConfig is deprecated. Use opts.tracker.rtcConfig instead"),i.tracker.rtcConfig=e.rtcConfig),e.wrtc&&(console.warn("WebTorrent: opts.wrtc is deprecated. Use opts.tracker.wrtc instead"),i.tracker.wrtc=e.wrtc),r.WRTC&&!i.tracker.wrtc&&(i.tracker.wrtc=r.WRTC)),"function"==typeof v?i._tcpPool=new v(i):n.nextTick(function(){i._onListening()}),i._downloadSpeed=k(),i._uploadSpeed=k(),!1!==e.dht&&"function"==typeof c?(i.dht=new c(f({nodeId:i.nodeId},e.dht)),i.dht.once("error",function(e){i._destroy(e)}),i.dht.once("listening",function(){var e=i.dht.address();e&&(i.dhtPort=e.port)}),i.dht.setMaxListeners(0),i.dht.listen(i.dhtPort)):i.dht=!1,i.enableWebSeeds=!1!==e.webSeeds,"function"==typeof g&&null!=e.blocklist?g(e.blocklist,{headers:{"user-agent":"WebTorrent/"+C+" (https://webtorrent.io)"}},function(e,n){return e?i.error("Failed to load blocklist: "+e.message):void(i.blocked=n,t())}):n.nextTick(t)):new o(e)}function i(e){return"object"==typeof e&&null!=e&&"function"==typeof e.pipe}function s(e){return"undefined"!=typeof FileList&&e instanceof FileList}t.exports=o;var d=e("safe-buffer").Buffer,a=e("simple-concat"),l=e("create-torrent"),p=e("debug")("webtorrent"),c=e("bittorrent-dht/client"),u=e("events").EventEmitter,f=e("xtend"),h=e("inherits"),g=e("load-ip-set"),m=e("run-parallel"),_=e("parse-torrent"),y=e("path"),b=e("simple-peer"),w=e("randombytes"),k=e("speedometer"),x=e("zero-fill"),v=e("./lib/tcp-pool"),S=e("./lib/torrent"),C=e("./package.json").version,E=C.match(/([0-9]+)/g).slice(0,2).map(function(e){return x(2,e)}).join(""),T="-WW"+E+"-";h(o,u),o.WEBRTC_SUPPORT=b.WEBRTC_SUPPORT,Object.defineProperty(o.prototype,"downloadSpeed",{get:function(){return this._downloadSpeed()}}),Object.defineProperty(o.prototype,"uploadSpeed",{get:function(){return this._uploadSpeed()}}),Object.defineProperty(o.prototype,"progress",{get:function(){var e=this.torrents.filter(function(e){return 1!==e.progress}),t=e.reduce(function(e,t){return e+t.downloaded},0),n=e.reduce(function(e,t){return e+(t.length||0)},0)||1;return t/n}}),Object.defineProperty(o.prototype,"ratio",{get:function(){var e=this.torrents.reduce(function(e,t){return e+t.uploaded},0),t=this.torrents.reduce(function(e,t){return e+t.received},0)||1;return e/t}}),o.prototype.get=function(e){var t=this,n=t.torrents.length,r,o;if(e instanceof S){for(r=0;r<n;r++)if(o=t.torrents[r],o===e)return o;}else{var i;try{i=_(e)}catch(e){}if(!i)return null;if(!i.infoHash)throw new Error("Invalid torrent identifier");for(r=0;r<n;r++)if(o=t.torrents[r],o.infoHash===i.infoHash)return o}return null},o.prototype.download=function(e,t,n){return console.warn("WebTorrent: client.download() is deprecated. Use client.add() instead"),this.add(e,t,n)},o.prototype.add=function(e,t,n){function r(){if(!s.destroyed)for(var e=0,n=s.torrents.length,r;e<n;e++)if(r=s.torrents[e],r.infoHash===d.infoHash&&r!==d)return void d._destroy(new Error("Cannot add duplicate torrent "+d.infoHash))}function o(){s.destroyed||("function"==typeof n&&n(d),s.emit("torrent",d))}function i(){d.removeListener("_infoHash",r),d.removeListener("ready",o),d.removeListener("close",i)}var s=this;if(s.destroyed)throw new Error("client is destroyed");if("function"==typeof t)return s.add(e,null,t);s._debug("add"),t=t?f(t):{};var d=new S(e,s,t);return s.torrents.push(d),d.once("_infoHash",r),d.once("ready",o),d.once("close",i),d},o.prototype.seed=function(e,t,n){function r(e){o._debug("on seed"),"function"==typeof n&&n(e),e.emit("seed"),o.emit("seed",e)}var o=this;if(o.destroyed)throw new Error("client is destroyed");if("function"==typeof t)return o.seed(e,null,t);o._debug("seed"),t=t?f(t):{},"string"==typeof e&&(t.path=y.dirname(e)),t.createdBy||(t.createdBy="WebTorrent/"+E);var d=o.add(null,t,function(e){var t=[function(t){e.load(p,t)}];o.dht&&t.push(function(t){e.once("dhtAnnounce",t)}),m(t,function(t){return o.destroyed?void 0:t?e._destroy(t):void r(e)})}),p;return s(e)&&(e=Array.prototype.slice.call(e)),Array.isArray(e)||(e=[e]),m(e.map(function(e){return function(t){i(e)?a(e,t):t(null,e)}}),function(e,n){return o.destroyed?void 0:e?d._destroy(e):void l.parseInput(n,t,function(e,r){return o.destroyed?void 0:e?d._destroy(e):void(p=r.map(function(e){return e.getStream}),l(n,t,function(e,t){if(!o.destroyed){if(e)return d._destroy(e);var n=o.get(t);n?d._destroy(new Error("Cannot add duplicate torrent "+n.infoHash)):d._onTorrentId(t)}}))})}),d},o.prototype.remove=function(e,t){this._debug("remove");var n=this.get(e);if(!n)throw new Error("No torrent with id "+e);this._remove(e,t)},o.prototype._remove=function(e,t){var n=this.get(e);n&&(this.torrents.splice(this.torrents.indexOf(n),1),n.destroy(t))},o.prototype.address=function(){return this.listening?this._tcpPool?this._tcpPool.server.address():{address:"0.0.0.0",family:"IPv4",port:0}:null},o.prototype.destroy=function(e){if(this.destroyed)throw new Error("client already destroyed");this._destroy(null,e)},o.prototype._destroy=function(e,t){var n=this;n._debug("client destroy"),n.destroyed=!0;var r=n.torrents.map(function(e){return function(t){e.destroy(t)}});n._tcpPool&&r.push(function(e){n._tcpPool.destroy(e)}),n.dht&&r.push(function(e){n.dht.destroy(e)}),m(r,t),e&&n.emit("error",e),n.torrents=[],n._tcpPool=null,n.dht=null},o.prototype._onListening=function(){if(this._debug("listening"),this.listening=!0,this._tcpPool){var e=this._tcpPool.server.address();e&&(this.torrentPort=e.port)}this.emit("listening")},o.prototype._debug=function(){var e=[].slice.call(arguments);e[0]="["+this._debugId+"] "+e[0],p.apply(null,e)}}).call(this,e("_process"),"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global)},{"./lib/tcp-pool":3,"./lib/torrent":187,"./package.json":191,_process:15,"bittorrent-dht/client":3,"create-torrent":86,debug:87,events:7,inherits:96,"load-ip-set":3,"parse-torrent":120,path:13,randombytes:125,"run-parallel":139,"safe-buffer":141,"simple-concat":142,"simple-peer":144,speedometer:147,xtend:174,"zero-fill":176}],193:[function(e,n){n.exports=function(){for(var e=parseInt(new Date().valueOf()/1e3),n="0123456789qwertyuioplkjhgfdsazxcvbnmQWERTYUIOPASDFGHJKLZXCVBNM",r="",o=0;o<9;o++)r+=n.charAt(t(1e8*Math.random())%n.length);return e+"-"+r}},{}],194:[function(e,t){function n(e){o.call(this);var t=s(a.from(e));this.piecesHash=t.pieces}t.exports=n;var r=e("debug")("pear:dispatcher"),o=e("events").EventEmitter,i=e("inherits"),s=e("parse-torrent-file"),d=e("rusha"),a=e("buffer/").Buffer;i(n,o),n.prototype.validate=function(e,t){var n=d.createHash().update(e).digest("hex"),r=n===this.piecesHash[t];return r||console.warn(`[HashValidateError] buffer validate fail ${t} hash ${n} ref ${this.piecesHash[t]}`),r}},{"buffer/":82,debug:87,events:7,inherits:96,"parse-torrent-file":116,rusha:140}],195:[function(e,t){function n(e){o.call(this),this.initialDownloaders=e.initialDownloaders,this.downloaders=[],this.callback={};var t=this;this.downloaders=this.initialDownloaders.map(function(e){return t._setupHttp(e),e})}var r=e("debug")("pear:reporter"),o=e("events").EventEmitter,i=e("inherits");t.exports=n,i(n,o),n.prototype.select=function(e,t,n){var r=this.downloaders.shift();r.select(e,t),this.downloaders.push(r),this.callback[e+"-"+t]=n},n.prototype._setupHttp=function(e){var t=this;return e.once("error",function(){t.emit("error")}),e.on("data",function(n,o,i){r("httpDownloader"+e.uri+" ondata range:"+o+"-"+i);var s=t.callback[o+"-"+i];s&&s(n)}),e}},{debug:87,events:7,inherits:96}],196:[function(e,t){var n=e("debug")("pear:reporter"),r=e("axios");r.defaults.baseURL="https://statdapi.webrtc.win:9801";var o=0;t.exports={reportTraffic:function(){},finalyReportTraffic:function(){},reportAbilities:function(){}}},{axios:43,debug:87}],197:[function(e,t){function n(){this.items={}}t.exports=n,n.prototype={constructer:n,has:function(e){return e in this.items},add:function(e){return!this.has(e)&&(this.items[e]=e,!0)},remove:function(e){return!!this.has(e)&&(delete this.items[e],!0)},clear:function(){this.items={}},size:function(){return Object.keys(this.items).length},values:function(){return Object.keys(this.items)},union:function(e){for(var t=new n,r=this.values(),o=0;o<r.length;o++)t.add(r[o]);r=e.values();for(var o=0;o<r.length;o++)t.add(r[o]);return t},intersection:function(e){for(var t=new n,r=this.values(),o=0;o<r.length;o++)e.has(r[o])&&t.add(r[o]);return t},difference:function(e){for(var t=new n,r=e.values(),o=0;o<r.length;o++)this.has(r[o])||t.add(r[o]);return t},subset:function(e){if(this.size()>e.size())return!1;for(var t=this.values(),n=0;n<t.length;n++)if(!e.has(t[n]))return!1;return!0}}},{}],198:[function(e,t){function n(e){i.call(this),o("start simpleRTC");var t=this;t.config=e||{};var n=r();t.RTCPeerConnection=n.RTCPeerConnection,t.RTCSessionDescription=n.RTCSessionDescription,t.RTCIceCandidate=n.RTCIceCandidate,t.dataChannel=null,t.peerConnection=null,t.currentoffer=null,t.sdp="",t.isDataChannelCreating=!1,t.iceServers=[{urls:"stun:stun.miwifi.com"},{urls:"stun:stun.ekiga.net"},{urls:"stun:stun.ideasip.com"}],t.pc_config={iceServers:t.iceServers},t.createPeerConnect()}function r(){if("undefined"==typeof window)return null;var e={RTCPeerConnection:window.RTCPeerConnection||window.mozRTCPeerConnection||window.webkitRTCPeerConnection,RTCSessionDescription:window.RTCSessionDescription||window.mozRTCSessionDescription||window.webkitRTCSessionDescription,RTCIceCandidate:window.RTCIceCandidate||window.mozRTCIceCandidate||window.webkitRTCIceCandidate};return e.RTCPeerConnection?e:null}t.exports=n;var o=e("debug")("pear:simple-RTC"),i=e("events").EventEmitter,s=e("inherits");s(n,i),n.prototype.signal=function(e){o("[pear_webrtc] event.type"+e.type),o("event JSON: "+JSON.stringify(e)),"offer"===e.type?this.receiveOffer(e):"answer"===e.type?this.receiveAnswer(e):this.receiveIceCandidate(e)},n.prototype.createPeerConnect=function(){var e=this;try{this.peerConnection=new e.RTCPeerConnection(this.pc_config),this.config.initiator&&!0==this.config.initiator&&(o("[pear_webrtc]  sendOffer"),this.sendOffer())}catch(t){o("pc established error\uFF1A"+t.message),this.emit("error",t.message)}this.peerConnection.onopen=function(){o("PeerConnection established")},this.peerConnection.onicecandidate=function(t){return null==t.candidate?""==e.sdp?(o("sdp error"),void e.emit("error","sdp error")):void 0:void(e.emit("signal",t.candidate),e.config.initiator&&!1!=e.config.initiator)},this.peerConnection.oniceconnectionstatechange=function(){o("connectionState: "+e.peerConnection.connectionState),o("signalingstate:"+e.peerConnection.signalingState),"stable"!=e.peerConnection.signalingState||e.isDataChannelCreating||(o("[pear_webrtc] oniceconnectionstatechange stable"),e.createDatachannel(),e.isDataChannelCreating=!0)},this.peerConnection.ondatachannel=function(t){e.dataChannel=t.channel,o(this.dataChannel.label+"dc state: "+e.dataChannel.readyState),e.dataChannelEvents(this.dataChannel)},this.peerConnection.onicegatheringstatechange=function(){"complete"===e.peerConnection.iceGatheringState&&e.emit("signal",{candidate:"completed"})}},n.prototype.createDatachannel=function(){try{this.dataChannel=this.peerConnection.createDataChannel("dataChannel",{reliable:!0}),o("Channel [ "+this.dataChannel.label+" ] creating!"),o(this.dataChannel.label+" Datachannel state: "+this.dataChannel.readyState)}catch(e){o("dc established error: "+e.message),this.emit("error",e.message)}this.dataChannelEvents(this.dataChannel)},n.prototype.dataChannelEvents=function(e){var t=this;e.onopen=function(){o("Datachannel opened, current stateis :\n"+t.dataChannel.readyState),o(e),t.emit("connect",t.dataChannel.readyState)},e.onmessage=function(e){var n=e.data;if(n instanceof Blob){var r=new FileReader;r.onload=function(){t.emit("data",this.result)},r.readAsArrayBuffer(n)}else t.emit("data",n)},e.onerror=function(e){t.emit("error",e)},e.onclose=function(){o("DataChannel is closed"),clearInterval(t.timer),t.timer=null}},n.prototype.receiveOffer=function(e){var t=this;this.peerConnection.setRemoteDescription(new RTCSessionDescription(e)),this.peerConnection.createAnswer(function(e){t.peerConnection.setLocalDescription(e),t.currentoffer=e,t.sdp=e.sdp,t.emit("signal",e)},function(e){o(e)})},n.prototype.sendOffer=function(){this.peerConnection.createOffer(function(e){this.currentoffer=e,o("Create an offer : \n"+JSON.stringify(e)),this.peerConnection.setLocalDescription(e),o("Offer Set as Local Desc"),this.emit("signal",e),this.sdp=e.sdp,o("Send offer:\n"+JSON.stringify(this.sdp))},function(e){o(e)})},n.prototype.receiveAnswer=function(e){o("Received remote Answer: \n"+JSON.stringify(e)),this.peerConnection.setRemoteDescription(new RTCSessionDescription(e)),o("already set remote desc, current ice gather state: "+this.peerConnection.iceGatheringState)},n.prototype.receiveIceCandidate=function(e){e&&(o("Received and add candidate:\n"+JSON.stringify(e)),this.peerConnection.addIceCandidate(new RTCIceCandidate(e)))},n.prototype.connect=function(){this.createDatachannel()},n.prototype.send=function(e){try{this.dataChannel.send(e),o("[pear_webrtc] send data\uFF1A"+e)}catch(t){o("dataChannel send error\uFF1A"+t.message)}},n.prototype.close=function(){this.peerConnection&&(this.peerConnection.close(),clearInterval(this.timer))},n.prototype.startHeartbeat=function(){var e=this,t={action:"ping"};this.timer=setInterval(function(){o(JSON.stringify(t)),e.send(JSON.stringify(t))},90000)}},{debug:87,events:7,inherits:96}],199:[function(e,t){function n(e){d.call(this);var t=this;t.type=2,t.peer_id=e.peer_id,t.chunkSize=e.chunkSize||1048576,t.uri=e.uri,t.host=e.host,t.fileSize=e.fileSize,t.useMonitor=e.useMonitor||!1,t.chunkStore=[],t.start=-1,t.end=-1,t.connectFlag=!1,t.downloading=!1,t.queue=[],t.startTime=0,t.endTime=0,t.speed=0,t.meanSpeed=-1,t.counter=0,t.expectedLength=1048576,t.simpleRTC=new i,t._setupSimpleRTC(t.simpleRTC),t.dc_id="",t.downloaded=0,t.mac=""}t.exports=n;var o=e("debug")("pear:webrtc-downloader-bin"),s=e("buffer/").Buffer,i=e("./simple-RTC"),d=e("events").EventEmitter,a=e("inherits");a(n,d);n.prototype.offerFromWS=function(e){var t=this;t.message=e,o("[webrtc] messageFromDC:"+JSON.stringify(e)),t.dc_id=e.peer_id,t.simpleRTC.signal(e.sdp)},n.prototype.candidatesFromWS=function(e){for(var t=0;t<e.length;++t)this.simpleRTC.receiveIceCandidate(e[t])},n.prototype.select=function(e,t){var n=this;o("pear_webrtc"+n.dc_id+"select:"+e+"-"+t),n.downloading?n.queue.push([e,t]):n.startDownloading(e,t)},n.prototype.startDownloading=function(e,t){var n=this;n.downloading=!0;var r={host:n.host,uri:n.uri,action:"get",response_type:"binary",start:e,end:t};o("pear_send_file : "+JSON.stringify(r)),n.startTime=new Date().getTime(),n.expectedLength=t-e+1,n.simpleRTC.send(JSON.stringify(r))},n.prototype._receive=function(e){var t=this,n=new Uint8Array(e),d=t._getHeaderInfo(n);if(!d)t.emit("error");else if(d.value)t.chunkStore.push(n);else if(d.begin)t.emit("start"),t.chunkStore=[];else if(d.done){var a=[],l=t.chunkStore.length;t.end=d.end,t.start=t._getHeaderInfo(t.chunkStore[0]).start,t.end=t._getHeaderInfo(t.chunkStore[t.chunkStore.length-1]).end,t.endTime=new Date().getTime(),t.speed=r((t.end-t.start+1)/(t.endTime-t.startTime)),o("pear_webrtc speed:"+t.speed+"KB/s"),-1==t.meanSpeed&&(t.meanSpeed=t.speed),t.meanSpeed=0.95*t.meanSpeed+0.05*t.speed,o("datachannel "+t.dc_id+" meanSpeed:"+t.meanSpeed+"KB/s");for(var p=0;p<l;p++)if(!!t.chunkStore[p]){var i=t.chunkStore[p].subarray(256);a.push(s.from(i))}var c=s.concat(a);if(c.length===t.expectedLength&&t.emit("data",c,t.start,t.end,t.speed),t.downloading=!1,0<t.queue.length){var u=t.queue.shift();t.startDownloading(u[0],u[1])}}else if(d.action);else o("RTC error msg:"+JSON.stringify(d)),t.emit("error")},n.prototype.abort=function(){},n.prototype.close=function(){var e=this;e.simpleRTC&&e.simpleRTC.close()},n.prototype.clearQueue=function(){0<this.queue.length&&(this.queue=[])},n.prototype._getHeaderInfo=function(e){var t=e.subarray(0,256),n=l.apply(String,t);return JSON.parse(n.split("}")[0]+"}")},n.prototype._setupSimpleRTC=function(e){var t=this;e.on("data",function(e){t._receive(e)}),e.on("error",function(e){o("[simpleRTC] error",e),t.emit("error")}),e.on("signal",function(e){var n={peer_id:t.peer_id,to_peer_id:t.message.peer_id,offer_id:t.message.offer_id};t.mac=t.message.peer_id.replace(/:/g,""),"answer"==e.type?(n.action="answer",n.sdps=e):e.candidate&&(n.action="candidate",o("signal candidate:"+JSON.stringify(e)),n.candidates=e),t.emit("signal",n)}),e.on("connect",function(n){o("[datachannel] "+t.dc_id+" CONNECT"),e.startHeartbeat(),t.connectFlag||(t.emit("connect",n),t.connectFlag=!0)})}},{"./simple-RTC":198,"buffer/":82,debug:87,events:7,inherits:96}],200:[function(e,n){function r(e,n,o){var i=this;return"object"==typeof n?r(e,"",n):void(m.call(i),o=o||{},i.render=o.render,i.selector=o.selector,i.autoplay=!1!==o.autoplay,i.auto=o.auto,i.src=e,i.urlObj=u.parse(i.src),i.scheduler=o.scheduler||"IdleFirst",i.token=n,i.useDataChannel=!1!==o.useDataChannel,i.useMonitor=!1!==o.useMonitor,i.useTorrent=!1!==o.useTorrent,i.magnetURI=o.magnetURI||void 0,i.trackers=o.trackers&&Array.isArray(o.trackers)&&0<o.trackers.length?o.trackers:null,i.sources=o.sources&&Array.isArray(o.sources)&&0<o.sources.length?o.sources:null,i.auto=!1!==o.auto,i.dataChannels=o.dataChannels||20,i.peerId=c(),i.isPlaying=!1,i.fileLength=0,i.downloaded=0,i.nodes=[],i.websocket=null,i.dispatcher=null,i.JDMap={},i.nodeSet=new _,i.tempDCQueue=[],i.fileName=i.urlObj.path.split("/").pop(),i.file=null,i.dispatcherConfig={chunkSize:o.chunkSize&&(0==o.chunkSize%C?o.chunkSize:t(o.chunkSize/C)*C),interval:o.interval?o.interval:o.sequencial?5e3:2e3,auto:i.auto,useMonitor:i.useMonitor,scheduler:b[i.scheduler],sequencial:o.sequencial,maxLoaders:o.maxLoaders||10,algorithm:o.algorithm||"push"},i.useDataChannel&&i._pearSignalHandshake(),i.candidateMap={},i.connectedDC=0,i.usefulDC=0,i._debugInfo={totalDCs:0,connectedDCs:0,usefulDCs:0,totalHTTP:0,totalHTTPS:0,usefulHTTPAndHTTPS:0,windowOffset:0,windowLength:0,signalServerConnected:!1,traffics:{},abilities:{}},i.getNodesUrl=!0===o.geoEnabled?S:v,i._start())}function o(){if("undefined"==typeof window)return null;var e={RTCPeerConnection:window.RTCPeerConnection||window.mozRTCPeerConnection||window.webkitRTCPeerConnection};return e.RTCPeerConnection?e:null}function i(e){for(var t=e.split("\r\n"),n=/^(a=ice-ufrag)/,r=0,o;r<t.length;++r)if(n.test(t[r])){o=t[r].split(":")[1];break}for(var i=/^(a=candidate)/,s=[],r=0;r<t.length;++r)if(i.test(t[r])){t[r]+=" generation 0 ufrag "+o+" network-cost 50";var d={sdpMid:"data",sdpMLineIndex:0};d.candidate=t[r].substring(2),s.push(d)}return s}n.exports=r;var s=e("debug")("pear:worker"),d=e("blueimp-md5"),a=e("./dispatcher"),l=e("./http-downloader"),p=e("./webrtc-downloader-bin"),c=e("./peerid-generator"),u=e("url"),f=e("./file"),h=e("./node-filter"),g=e("inherits"),m=e("events").EventEmitter,_=e("./set"),y=e("./pear-torrent"),b=e("./node-scheduler"),w=e("./reporter"),k=e("./range-loader"),x=e("./piece-validator"),v="https://api.webrtc.win:6601/v1/customer/nodes",S="https://api.webrtc.win/v1/customer/geo_nodes",d=e("blueimp-md5"),C=32768;g(r,m),r.isRTCSupported=function(){return!!o()},Object.defineProperty(r.prototype,"debugInfo",{get:function(){return this._debugInfo}}),r.prototype._start=function(){var e=this;window.WebSocket||(e.useDataChannel=!1),e.sources?(e.sources=e.sources.map(function(e){return{uri:e,type:"server"}}),h(e.sources,function(t,n){var r=t.length;s("nodes:"+JSON.stringify(t)),r?(s("nodeFilter fileLength:"+n),e.auto?e._startPlaying(t):e._initRangeLoader(t)):e._fallBack()},{start:0,end:30})):e._getNodes(e.token,function(t){if(s("debug _getNodes: %j",t),t){var n=new XMLHttpRequest;n.responseType="arraybuffer",n.open("GET",e.torrentUrl),n.onload=function(){var n=this.response;e.validator=new x(n),e.auto?e._startPlaying(t):e._initRangeLoader(t)},n.send()}else e._fallBackToWRTC()})},r.prototype._fallBack=function(){s("PearDownloader _fallBack"),this.emit("fallback")},r.prototype._fallBackToWRTC=function(){var e=this;s("_fallBackToWRTC"),!0===e._debugInfo.signalServerConnected?h([{uri:e.src,type:"server"}],function(t,n){var r=t.length;r?(s("nodeFilter fileLength:"+n),e.fileLength=n,e._startPlaying(t)):e._fallBack()}):e._fallBack()},r.prototype._getNodes=function(e,t){var n=this,r={host:n.urlObj.host,uri:n.urlObj.path};r=function(e){var t="?";for(var n in e)t+=n+"="+e[n]+"&";return t}(r);var o=new XMLHttpRequest;o.open("GET",n.getNodesUrl+r),o.timeout=2e3,o.setRequestHeader("X-Pear-Token",n.token),o.ontimeout=function(){t(null)},o.onerror=function(){n._fallBackToWRTC()},o.onload=function(){if(200<=this.status&&300>this.status||304==this.status){s(this.response);var e=JSON.parse(this.response);if(!e.size)t(null);else if(n.fileLength=e.size,n.torrentUrl=e.torrents[512],!e.nodes)n._fallBackToWRTC();else{for(var r=e.nodes,o=[],d="http:"===location.protocol,a=0,l=0,p=0,i;p<r.length;++p)if(i=r[p].protocol,i&&"webtorrent"===i)n.magnetURI||(n.magnetURI=r[p].magnet_uri,s("_getNodes magnetURI:"+r[p].magnet_uri));else{a++,l++,i=d?"http":"https";var c=d?r[p].http_port:r[p].https_port,u=r[p].host+":"+c,f=r[p].type,g=r[p].capacity,m=n.urlObj.host+n.urlObj.path,_=i+"://"+u+"/"+m;n.nodeSet.has(_)||(o.push({uri:_,type:f,capacity:g}),n.nodeSet.add(_))}n._debugInfo.totalHTTPS=a,n._debugInfo.totalHTTP=l,n.nodes=o,0===o.length&&t([{uri:n.src,type:"server"}]),h(o,function(e){var r=e.length;n._debugInfo.usefulHTTPAndHTTPS=r,r&&(2>=r?(e.push({uri:n.src,type:"server"}),t(e)):20<=e.length?(e=e.slice(0,20),t(e)):t(e))},{start:0,end:30},n.fileLength)}}else t(null)},o.send()},r.prototype._pearSignalHandshake=function(){var e=this,t=0;s("_pearSignalHandshake");var n=new WebSocket("wss://signal.webrtc.win:7601/wss");e.websocket=n,n.onopen=function(){e._debugInfo.signalServerConnected=!0;var t=d(e.urlObj.host+e.urlObj.path);n.push(JSON.stringify({action:"get",peer_id:e.peerId,host:e.urlObj.host,uri:e.urlObj.path,md5:t}))},n.push=n.send,n.send=function(e){return 1==n.readyState?void n.push(e):(console.warn("websocket connection is not opened yet."),setTimeout(function(){n.send(e)},1e3))},n.onmessage=function(n){var r=JSON.parse(n.data);if("candidate"===r.action&&"end"===r.candidates.type)for(var o in e.candidateMap)r.peer_id===o&&e.JDMap[o].candidatesFromWS(e.candidateMap[o]);else if(r.nodes){var d=r.nodes;e._debugInfo.totalDCs=d.length;for(var a=0,l;a<d.length;++a)if(l=d[a],!l.errorcode){if(t===e.dataChannels)break;e.JDMap[l.peer_id]?s("datachannel \u91CD\u590D"):(e.candidateMap[l.peer_id]=i(l.sdp.sdp),l.sdp.sdp=l.sdp.sdp.split("a=candidate")[0],e.JDMap[l.peer_id]=e.initDC(l),t++)}else s("dc error message:"+JSON.stringify(r))}}},r.prototype.initDC=function(e){var t=this,n={peer_id:t.peerId,chunkSize:32768,host:t.urlObj.host,uri:t.urlObj.path,useMonitor:t.useMonitor},r=new p(n);return r.offerFromWS(e),r.on("signal",function(e){t.websocket.send(JSON.stringify(e))}),r.once("connect",function(){t._debugInfo.connectedDCs++,t._debugInfo.usefulDCs++,t.dispatcher?t.dispatcher.addDataChannel(r):t.tempDCQueue.push(r)}),r},r.prototype._startPlaying=function(e){var t=this;s("start playing"),t.dispatcherConfig.initialDownloaders=[];for(var n=0;n<e.length;++n){var r=e[n],o=new l(r.uri,r.type);o.id=n,t.dispatcherConfig.initialDownloaders.push(o)}t.dispatcherConfig.fileSize=t.fileLength;var i={length:t.fileLength,offset:0,name:t.urlObj.path,elem:t.selector},p=new a(t.dispatcherConfig);for(t.dispatcher=p,p.validator=t.validator;t.tempDCQueue.length;){var c=t.tempDCQueue.shift();t.dispatcher.addDataChannel(c)}p.once("ready",function(e){if(t.emit("begin",t.fileLength,e),t.reportTrafficId=setInterval(function(){var e=[],n=t._debugInfo.traffics;for(var r in n)e.push(n[r]);w.reportTraffic(t.peerId,t.fileLength,e)},5e3),t.reportAbilitiesId=setInterval(function(){w.reportAbilities(t._debugInfo.abilities)},1e4),t.useTorrent&&t.magnetURI){var n=new y;s("magnetURI:"+t.magnetURI),n.add(t.magnetURI,{announce:t.trackers||["wss://tracker.openwebtorrent.com","wss://tracker.btorrent.xyz"],store:p.store,bitfield:p.bitfield,strategy:"rarest"},function(e){s("Torrent:",e),p.addTorrent(e)})}});var u=new f(p,i);t.file=u,u._dispatcher._init(),t.render&&t.render.render(u,t.selector,{autoplay:t.autoplay}),t.isPlaying=!0,p.on("error",function(){s("dispatcher error!")}),p.on("needmorenodes",function(){s("request more nodes")}),p.on("needsource",function(){if(!t.nodeSet.has(t.src)){var e=new l(t.src,"server");p.addNode(e),s("dispatcher add source:"+t.src),t.nodeSet.add(t.src)}}),p.on("needmoredatachannels",function(){if(s("request more datachannels"),t.websocket&&t.websocket.readyState===WebSocket.OPEN){var e=d(t.urlObj.host+t.urlObj.path);t.websocket.push(JSON.stringify({action:"get",peer_id:t.peerId,host:t.urlObj.host,uri:t.urlObj.path,md5:e}))}}),p.once("done",function(){var e=[],n=t._debugInfo.traffics;for(var r in n)e.push(n[r]);w.finalyReportTraffic(t.peerId,t.fileLength,e),clearInterval(t.reportTrafficId),clearInterval(t.reportAbilitiesId),t.reportTrafficId=null,t.emit("done")}),p.on("downloaded",function(e){t.downloaded+=e,t.downloaded>=t.fileLength?t.emit("progress",1):t.emit("progress",t.downloaded/t.fileLength)}),p.on("meanspeed",function(e){t.emit("meanspeed",e)}),p.on("fograte",function(e){t.emit("fogratio",e)}),p.on("fogspeed",function(e){t.emit("fogspeed",e)}),p.on("cloudspeed",function(e){t.emit("cloudspeed",e)}),p.on("buffersources",function(e){t.emit("buffersources",e)}),p.on("sourcemap",function(e,n){t.emit("sourcemap",e,n)}),p.on("traffic",function(e,n,r,o){t._debugInfo.traffics[e]?t._debugInfo.traffics[e].traffic+=n:(t._debugInfo.traffics[e]={},t._debugInfo.traffics[e].mac=e,t._debugInfo.traffics[e].traffic=n),o&&(t._debugInfo.abilities[e]=o),t.emit("traffic",e,n,r)}),p.on("datachannelerror",function(){t._debugInfo.usefulDCs--}),p.on("fillwindow",function(e,n){t._debugInfo.windowOffset=e,t._debugInfo.windowLength=n}),p.on("httperror",function(){t._debugInfo.usefulHTTPAndHTTPS--})},r.prototype._initRangeLoader=function(e){s("_initRangeLoader");for(var t=[],n=0;n<e.length;++n){var r=e[n],o=new l(r.uri,r.type);o.id=n,t.push(o)}this.loader=new k({initialDownloaders:t}),this.emit("begin")},r.prototype.select=function(e,t,n){this.loader.select(e,t,n)}},{"./dispatcher":178,"./file":180,"./http-downloader":181,"./node-filter":189,"./node-scheduler":190,"./pear-torrent":192,"./peerid-generator":193,"./piece-validator":194,"./range-loader":195,"./reporter":196,"./set":197,"./webrtc-downloader-bin":199,"blueimp-md5":81,debug:87,events:7,inherits:96,url:37}]},{},[41])(41)});