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o=0;o<e.length;o++){var i=e[o];if(i.piece===t&&i.offset===n&&i.length===r)return 0===o?e.shift():e.splice(o,1),i}return null}t.exports=r;var i=e("bencode"),s=e("bitfield"),a=e("safe-buffer").Buffer,u=e("debug")("bittorrent-protocol"),c=e("xtend"),f=e("inherits"),d=e("randombytes"),h=e("speedometer"),l=e("readable-stream"),p=4e5,m=55e3,g=a.from("BitTorrent protocol"),y=a.from([0,0,0,0]),_=a.from([0,0,0,1,0]),v=a.from([0,0,0,1,1]),b=a.from([0,0,0,1,2]),w=a.from([0,0,0,1,3]),E=[0,0,0,0,0,0,0,0],k=[0,0,0,3,9,0,0];f(r,l.Duplex),r.prototype.setKeepAlive=function(e){var t=this;t._debug("setKeepAlive %s",e),clearInterval(t._keepAliveInterval),e!==!1&&(t._keepAliveInterval=setInterval(function(){t.keepAlive()},m))},r.prototype.setTimeout=function(e,t){this._debug("setTimeout ms=%d unref=%s",e,t),this._clearTimeout(),this._timeoutMs=e,this._timeoutUnref=!!t,this._updateTimeout()},r.prototype.destroy=function(){this.destroyed||(this.destroyed=!0,this._debug("destroy"),this.emit("close"),this.end())},r.prototype.end=function(){this._debug("end"),this._onUninterested(),this._onChoke(),l.Duplex.prototype.end.apply(this,arguments)},r.prototype.use=function(e){function t(){}var n=e.prototype.name;if(!n)throw new Error('Extension class requires a "name" property on the prototype');this._debug("use extension.name=%s",n);var r=this._nextExt,o=new e(this);"function"!=typeof o.onHandshake&&(o.onHandshake=t),"function"!=typeof o.onExtendedHandshake&&(o.onExtendedHandshake=t),"function"!=typeof o.onMessage&&(o.onMessage=t),this.extendedMapping[r]=n,this._ext[n]=o,this[n]=o,this._nextExt+=1},r.prototype.keepAlive=function(){this._debug("keep-alive"),this._push(y)},r.prototype.handshake=function(e,t,n){var r,o;if("string"==typeof 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(E);i[5]|=16,n&&n.dht&&(i[7]|=1),this._push(a.concat([g,i,r,o])),this._handshakeSent=!0,this.peerExtensions.extended&&!this._extendedHandshakeSent&&this._sendExtendedHandshake()},r.prototype._sendExtendedHandshake=function(){var e=c(this.extendedHandshake);e.m={};for(var t in this.extendedMapping){var n=this.extendedMapping[t];e.m[n]=Number(t)}this.extended(0,i.encode(e)),this._extendedHandshakeSent=!0},r.prototype.choke=function(){this.amChoking||(this.amChoking=!0,this._debug("choke"),this.peerRequests.splice(0,this.peerRequests.length),this._push(_))},r.prototype.unchoke=function(){this.amChoking&&(this.amChoking=!1,this._debug("unchoke"),this._push(v))},r.prototype.interested=function(){this.amInterested||(this.amInterested=!0,this._debug("interested"),this._push(b))},r.prototype.uninterested=function(){this.amInterested&&(this.amInterested=!1,this._debug("uninterested"),this._push(w))},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")):(this._debug("request index=%d offset=%d length=%d",e,t,r),this.requests.push(new n(e,t,r,o)),this._updateTimeout(),void 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(k);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)throw new Error("Unrecognized extension: "+e);var n=a.from([e]),r=a.isBuffer(t)?t:i.encode(t);this._message(20,[],a.concat([n,r]))},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 i=0;i<t.length;i++)o.writeUInt32BE(t[i],5+4*i);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);var i;for(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.shift(),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 s(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 a===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},a=new n(e,t,r,s);i.peerRequests.push(a),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(r){this._debug("ignoring invalid extended handshake: %s",r.message||r)}if(!n)return;this.peerExtendedHandshake=n;var o;if("object"==typeof n.m)for(o in n.m)this.peerExtendedMapping[o]=Number(n.m[o].toString());for(o in this._ext)this.peerExtendedMapping[o]&&this._ext[o].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);t>0?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()?(e._debug("Error: wire not speaking BitTorrent protocol (%s)",r.toString()),void e.end()):(t=t.slice(n),e._onHandshake(t.slice(8,28),t.slice(28,48),{dht:!!(1&t[7]),extended:!!(16&t[5])}),void e._parse(4,e._onMessageLength))})})},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=[];this.requests.length;)this._callback(this.requests.shift(),new Error("wire was closed"),null)},r.prototype._debug=function(){var e=[].slice.call(arguments);e[0]="["+this._debugId+"] 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o=e("safe-buffer").Buffer,i=e("debug")("bittorrent-tracker:client"),s=e("events").EventEmitter,a=e("xtend"),u=e("inherits"),c=e("once"),f=e("run-parallel"),d=e("simple-peer"),h=e("uniq"),l=e("url"),p=e("./lib/common"),m=e("./lib/client/http-tracker"),g=e("./lib/client/udp-tracker"),y=e("./lib/client/websocket-tracker");u(r,s),r.scrape=function(e,t){if(t=c(t),!e.infoHash)throw new Error("Option `infoHash` is required");if(!e.announce)throw new Error("Option `announce` is required");var n=a(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,u={};return i.on("scrape",function(e){if(s-=1,u[e.infoHash]=e,0===s){i.destroy();var n=Object.keys(u);1===n.length?t(null,u[n[0]]):t(null,u)}}),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 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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:29,inherits:36}],11:[function(e,t){function n(e,t){var n=this;d.call(n,e,t),o("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 r(){}t.exports=n;var o=e("debug")("bittorrent-tracker:websocket-tracker"),i=e("xtend"),s=e("inherits"),a=e("simple-peer"),u=e("randombytes"),c=e("simple-websocket"),f=e("../common"),d=e("./tracker"),h=15e3,l=18e5,p=3e4,m=5e4;s(n,d),n.prototype.DEFAULT_ANNOUNCE_INTERVAL=3e4,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=Math.min(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)&&e.infoHash.length>0?e.infoHash.map(function(e){return e.toString("binary")}):e.infoHash&&e.infoHash.toString("binary")||t.client._infoHashBinary,r={action:"scrape",info_hash:n};t._send(r)}},n.prototype.destroy=function(e){function t(){a&&(clearTimeout(a),a=null),s.removeListener("data",t),s.destroy(),s=null}var n=this;if(e||(e=r),n.destroyed)return e(null);n.destroyed=!0,clearInterval(n.interval),clearTimeout(n.reconnectTimer);for(var o in n.peers){var i=n.peers[o];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,n.client._socketPool[n.announceUrl]&&(n.client._socketPool[n.announceUrl].consumers-=1),n.client._socketPool[n.announceUrl].consumers>0)return e();var s=n.client._socketPool[n.announceUrl];if(delete n.client._socketPool[n.announceUrl],s.on("error",r),s.once("close",e),!n.expectingResponse)return t();var a=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=e.client._socketPool[e.announceUrl],e.socket?e.client._socketPool[e.announceUrl].consumers+=1:(e.socket=e.client._socketPool[e.announceUrl]=new c(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(n){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 o("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){o("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 i=e.interval||e["min interval"];i&&t.setInterval(1e3*i);var s=e["tracker id"];s&&(t._trackerId=s),null!=e.complete&&t.client.emit("update",{announce:t.announceUrl,complete:e.complete,incomplete:e.incomplete});var u;if(e.offer&&e.peer_id&&(o("creating peer (from remote offer)"),u=new a({trickle:!1,config:t.client._rtcConfig,wrtc:t.client._wrtc}),u.id=f.binaryToHex(e.peer_id),u.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)}),u.signal(e.offer),t.client.emit("peer",u)),e.answer&&e.peer_id){var c=f.binaryToHex(e.offer_id);u=t.peers[c],u?(u.id=f.binaryToHex(e.peer_id),u.signal(e.answer),t.client.emit("peer",u),clearTimeout(u.trackerTimeout),u.trackerTimeout=null,delete t.peers[c]):o("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=e[n];t.client.emit("scrape",{announce:t.announceUrl,infoHash:f.binaryToHex(n),complete:r.complete,incomplete:r.incomplete,downloaded:r.downloaded})})},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=Math.floor(Math.random()*p)+Math.min(Math.pow(2,e.retries)*h,l);e.reconnecting=!0,clearTimeout(e.reconnectTimer),e.reconnectTimer=setTimeout(function(){e.retries++,e._openSocket()},t),e.reconnectTimer.unref&&e.reconnectTimer.unref(),o("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);o("send %s",n),t.socket.send(n)}},n.prototype._generateOffers=function(e,t){function n(){var e=u(20).toString("hex");o("creating peer (from _generateOffers)");var t=i.peers[e]=new a({initiator:!0,trickle:!1,config:i.client._rtcConfig,wrtc:i.client._wrtc});t.once("signal",function(t){s.push({offer:t,offer_id:f.hexToBinary(e)}),r()}),t.trackerTimeout=setTimeout(function(){o("tracker timeout: destroying peer"),t.trackerTimeout=null,delete i.peers[e],t.destroy()},m),t.trackerTimeout.unref&&t.trackerTimeout.unref()}function r(){s.length===e&&(o("generated %s offers",e),t(s))}var i=this,s=[];o("generating %s offers",e);for(var c=0;e>c;++c)n();r()}},{"../common":12,"./tracker":10,debug:24,inherits:36,randombytes:68,"simple-peer":85,"simple-websocket":87,xtend:124}],12:[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=String(e)),r.from(e,"binary").toString("hex")},n.hexToBinary=function(e){return"string"!=typeof e&&(e=String(e)),r.from(e,"hex").toString("binary")};var 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p=e("./index"),m=e("./descriptor"),g=20828448e5;n.fullBoxes={};var y=["mvhd","tkhd","mdhd","vmhd","smhd","stsd","esds","stsz","stco","stss","stts","ctts","stsc","dref","elst","hdlr","mehd","trex","mfhd","tfhd","tfdt","trun"];y.forEach(function(e){n.fullBoxes[e]=!0}),n.ftyp={},n.ftyp.encode=function(e,r,o){r=r?r.slice(o):new t(n.ftyp.encodingLength(e));var i=e.compatibleBrands||[];r.write(e.brand,0,4,"ascii"),r.writeUInt32BE(e.brandVersion,4);for(var s=0;s<i.length;s++)r.write(i[s],8+4*s,4,"ascii");return n.ftyp.encode.bytes=8+4*i.length,r},n.ftyp.decode=function(e,t){e=e.slice(t);for(var n=e.toString("ascii",0,4),r=e.readUInt32BE(4),o=[],i=8;i<e.length;i+=4)o.push(e.toString("ascii",i,i+4));return{brand:n,brandVersion:r,compatibleBrands:o}},n.ftyp.encodingLength=function(e){return 8+4*(e.compatibleBrands||[]).length},n.mvhd={},n.mvhd.encode=function(e,u,c){return u=u?u.slice(c):new t(96),o(e.ctime||new Date,u,0),o(e.mtime||new Date,u,4),u.writeUInt32BE(e.timeScale||0,8),u.writeUInt32BE(e.duration||0,12),i(e.preferredRate||0,u,16),s(e.preferredVolume||0,u,20),r(u,22,32),a(e.matrix,u,32),u.writeUInt32BE(e.previewTime||0,68),u.writeUInt32BE(e.previewDuration||0,72),u.writeUInt32BE(e.posterTime||0,76),u.writeUInt32BE(e.selectionTime||0,80),u.writeUInt32BE(e.selectionDuration||0,84),u.writeUInt32BE(e.currentTime||0,88),u.writeUInt32BE(e.nextTrackId||0,92),n.mvhd.encode.bytes=96,u},n.mvhd.decode=function(e,t){return e=e.slice(t),{ctime:f(e,0),mtime:f(e,4),timeScale:e.readUInt32BE(8),duration:e.readUInt32BE(12),preferredRate:d(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,i,s){return i=i?i.slice(s):new t(80),o(e.ctime||new Date,i,0),o(e.mtime||new Date,i,4),i.writeUInt32BE(e.trackId||0,8),r(i,12,16),i.writeUInt32BE(e.duration||0,16),r(i,20,28),i.writeUInt16BE(e.layer||0,28),i.writeUInt16BE(e.alternateGroup||0,30),i.writeUInt16BE(e.volume||0,32),a(e.matrix,i,36),i.writeUInt32BE(e.trackWidth||0,72),i.writeUInt32BE(e.trackHeight||0,76),n.tkhd.encode.bytes=80,i},n.tkhd.decode=function(e,t){return e=e.slice(t),{ctime:f(e,0),mtime:f(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,i){return r=r?r.slice(i):new t(20),o(e.ctime||new Date,r,0),o(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:f(e,0),mtime:f(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,o,i){return o=o?o.slice(i):new t(4),o.writeUInt16BE(e.balance||0,0),r(o,2,4),n.smhd.encode.bytes=4,o},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 i=e.entries||[];r.writeUInt32BE(i.length,0);for(var s=4,a=0;a<i.length;a++){var u=i[a];p.encode(u,r,s),s+=p.encode.bytes}return n.stsd.encode.bytes=s,r},n.stsd.decode=function(e,t,n){e=e.slice(t);for(var r=e.readUInt32BE(0),o=new Array(r),i=4,s=0;r>s;s++){var a=p.decode(e,i,n);o[s]=a,i+=a.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+=p.encodingLength(e.entries[n]);return t},n.avc1=n.VisualSampleEntry={},n.VisualSampleEntry.encode=function(e,o,i){o=o?o.slice(i):new 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a=p.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+=p.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,o,i){o=o?o.slice(i):new t(n.AudioSampleEntry.encodingLength(e)),r(o,0,6),o.writeUInt16BE(e.dataReferenceIndex||0,6),r(o,8,16),o.writeUInt16BE(e.channelCount||2,16),o.writeUInt16BE(e.sampleSize||16,18),r(o,20,24),o.writeUInt32BE(e.sampleRate||0,24);var s=28,a=e.children||[];a.forEach(function(e){p.encode(e,o,s),s+=p.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;r-i>=8;){var s=p.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+=p.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=m.Descriptor.decode(e,0,e.length),i="ESDescriptor"===o.tagName?o:{},s=i.DecoderConfigDescriptor||{},a=s.oti||0,u=s.DecoderSpecificInfo,c=u?(248&u.buffer.readUInt8(0))>>3:0,f=null;return a&&(f=a.toString(16),c&&(f+="."+c)),{mimeCodec:f,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 i=e.entries||[];r=r?r.slice(o):t(n.stsz.encodingLength(e)),r.writeUInt32BE(0,0),r.writeUInt32BE(i.length,4);for(var s=0;s<i.length;s++)r.writeUInt32BE(i[s],4*s+8);return n.stsz.encode.bytes=8+4*i.length,r},n.stsz.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=e.readUInt32BE(4),o=new Array(r),i=0;r>i;i++)o[i]=0===n?e.readUInt32BE(4*i+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 i=e.entries||[];r=r?r.slice(o):new t(n.stco.encodingLength(e)),r.writeUInt32BE(i.length,0);for(var s=0;s<i.length;s++)r.writeUInt32BE(i[s],4*s+4);return n.stco.encode.bytes=4+4*i.length,r},n.stco.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=new Array(n),o=0;n>o;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 i=e.entries||[];r=r?r.slice(o):new t(n.stts.encodingLength(e)),r.writeUInt32BE(i.length,0);for(var s=0;s<i.length;s++){var a=8*s+4;r.writeUInt32BE(i[s].count||0,a),r.writeUInt32BE(i[s].duration||0,a+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=new Array(n),o=0;n>o;o++){var 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 i=e.entries||[];r=r?r.slice(o):new t(n.ctts.encodingLength(e)),r.writeUInt32BE(i.length,0);for(var s=0;s<i.length;s++){var a=8*s+4;r.writeUInt32BE(i[s].count||0,a),r.writeUInt32BE(i[s].compositionOffset||0,a+4)}return n.ctts.encode.bytes=4+8*i.length,r},n.ctts.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=new Array(n),o=0;n>o;o++){var 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 i=e.entries||[];r=r?r.slice(o):new t(n.stsc.encodingLength(e)),r.writeUInt32BE(i.length,0);for(var s=0;s<i.length;s++){var a=12*s+4;r.writeUInt32BE(i[s].firstChunk||0,a),r.writeUInt32BE(i[s].samplesPerChunk||0,a+4),r.writeUInt32BE(i[s].sampleDescriptionId||0,a+8)}return n.stsc.encode.bytes=4+12*i.length,r},n.stsc.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=new Array(n),o=0;n>o;o++){var 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 i=e.entries||[];r.writeUInt32BE(i.length,0);for(var s=4,a=0;a<i.length;a++){var u=i[a],c=(u.buf?u.buf.length:0)+4+4;r.writeUInt32BE(c,s),s+=4,r.write(u.type,s,4,"ascii"),s+=4,u.buf&&(u.buf.copy(r,s),s+=u.buf.length)}return n.dref.encode.bytes=s,r},n.dref.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=new Array(n),o=4,i=0;n>i;i++){var s=e.readUInt32BE(o),a=e.toString("ascii",o+4,o+8),u=e.slice(o+8,o+s);o+=s,r[i]={type:a,buf:u}}return{entries:r}},n.dref.encodingLength=function(e){var t=4;if(!e.entries)return t;for(var n=0;n<e.entries.length;n++){var r=e.entries[n].buf;t+=(r?r.length:0)+4+4}return t},n.elst={},n.elst.encode=function(e,r,o){var s=e.entries||[];r=r?r.slice(o):new t(n.elst.encodingLength(e)),r.writeUInt32BE(s.length,0);for(var a=0;a<s.length;a++){var u=12*a+4;r.writeUInt32BE(s[a].trackDuration||0,u),r.writeUInt32BE(s[a].mediaTime||0,u+4),i(s[a].mediaRate||0,r,u+8)}return n.elst.encode.bytes=4+12*s.length,r},n.elst.decode=function(e,t){e=e.slice(t);for(var n=e.readUInt32BE(0),r=new Array(n),o=0;n>o;o++){var i=12*o+4;r[o]={trackDuration:e.readUInt32BE(i),
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t._intervalMs+Math.floor(Math.random()*t._intervalMs/5)}var t=this;t._dhtAnnouncing||(o("dht announce"),t._dhtAnnouncing=!0,clearTimeout(t._dhtTimeout),t.dht.announce(t.infoHash,t._port,function(n){t._dhtAnnouncing=!1,o("dht announce complete"),n&&t.emit("warning",n),t.emit("dhtAnnounce"),t.destroyed||(t._dhtTimeout=setTimeout(function(){t._dhtAnnounce()},e()),t._dhtTimeout.unref&&t._dhtTimeout.unref())}))}}).call(this,e("_process"))},{_process:61,"bittorrent-dht/client":15,"bittorrent-tracker/client":9,debug:24,events:29,inherits:36,"run-parallel":80,xtend:124}],101:[function(e,t){(function(e){function n(e){return this instanceof n?(this.length=e,this.missing=e,this.sources=null,this._chunks=Math.ceil(e/r),this._remainder=e%r||r,this._buffered=0,this._buffer=null,this._cancellations=null,this._reservations=0,void(this._flushed=!1)):new n(e)}t.exports=n;var r=16384;n.BLOCK_LENGTH=r,n.prototype.chunkLength=function(e){return 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0:this._onRequest(t.piece);break;case 1:this._onData(t.piece,r,t.total_size);break;case 2:this._onReject(t.piece)}},t.prototype.fetch=function(){this._metadataComplete||(this._fetching=!0,this._metadataSize&&this._requestPieces())},t.prototype.cancel=function(){this._fetching=!1},t.prototype.setMetadata=function(e){if(this._metadataComplete)return!0;i("set metadata");try{var t=n.decode(e).info;t&&(e=n.encode(t))}catch(r){}return this.cancel(),this.metadata=e,this._metadataComplete=!0,this._metadataSize=this.metadata.length,this._wire.extendedHandshake.metadata_size=this._metadataSize,this.emit("metadata",n.encode({info:n.decode(this.metadata)})),!0},t.prototype._send=function(e,t){var r=n.encode(e);o.isBuffer(t)&&(r=o.concat([r,t])),this._wire.extended("ut_metadata",r)},t.prototype._request=function(e){this._send({msg_type:0,piece:e})},t.prototype._data=function(e,t,n){var r={msg_type:1,piece:e};"number"==typeof 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r(0,{grow:c}),this._remainingRejects-=this._numPieces,this._remainingRejects>0?this._requestPieces():this.emit("warning",new Error("Peer sent invalid metadata"))},t}},{bencode:111,bitfield:7,debug:24,events:29,inherits:36,"safe-buffer":82,"simple-sha1":86}],109:[function(e,t){(function(e){function n(t,r,o,i){return"number"!=typeof r&&null==i&&(i=r,r=void 0),"number"!=typeof o&&null==i&&(i=o,o=void 0),n.position=0,n.encoding=i||null,n.data=e.isBuffer(t)?t.slice(r,o):new e(t),n.bytes=n.data.length,n.next()}n.bytes=0,n.position=0,n.data=null,n.encoding=null,n.next=function(){switch(n.data[n.position]){case 100:return n.dictionary();case 108:return n.list();case 105:return n.integer();default:return n.buffer()}},n.find=function(e){for(var t=n.position,r=n.data.length,o=n.data;r>t;){if(o[t]===e)return t;t++}throw new Error('Invalid data: Missing delimiter "'+String.fromCharCode(e)+'" [0x'+e.toString(16)+"]")},n.dictionary=function(){n.position++;for(var e={};101!==n.data[n.position];)e[n.buffer()]=n.next();return n.position++,e},n.list=function(){n.position++;for(var e=[];101!==n.data[n.position];)e.push(n.next());return n.position++,e},n.integer=function(){var e=n.find(101),t=n.data.toString("ascii",n.position+1,e);return n.position+=e+1-n.position,parseInt(t,10)},n.buffer=function(){var e=n.find(58),t=parseInt(n.data.toString("ascii",n.position,e),10),r=++e+t;return n.position=r,n.encoding?n.data.toString(n.encoding,e,r):n.data.slice(e,r)},t.exports=n}).call(this,e("buffer").Buffer)},{buffer:18}],110:[function(e,t){(function(e){function n(t,r,o){var i=[],s=null;return n._encode(i,t),s=e.concat(i),n.bytes=s.length,e.isBuffer(r)?(s.copy(r,o),r):s}n.bytes=-1,n._floatConversionDetected=!1,n._encode=function(t,r){if(e.isBuffer(r))return t.push(new e(r.length+":")),void t.push(r);switch(typeof r){case"string":n.buffer(t,r);break;case"number":n.number(t,r);break;case"object":r.constructor===Array?n.list(t,r):n.dict(t,r);break;case"boolean":n.number(t,r?1:0)}};var r=new e("e"),o=new e("d"),i=new e("l");n.buffer=function(t,n){t.push(new e(e.byteLength(n)+":"+n))},n.number=function(t,r){var o=2147483648,i=r/o<<0,s=r%o<<0,a=i*o+s;t.push(new e("i"+a+"e")),a===r||n._floatConversionDetected||(n._floatConversionDetected=!0,console.warn('WARNING: Possible data corruption detected with value "'+r+'":','Bencoding only defines support for integers, value was converted to "'+a+'"'),console.trace())},n.dict=function(e,t){e.push(o);for(var i,s=0,a=Object.keys(t).sort(),u=a.length;u>s;s++)i=a[s],n.buffer(e,i),n._encode(e,t[i]);e.push(r)},n.list=function(e,t){var o=0,s=t.length;for(e.push(i);s>o;o++)n._encode(e,t[o]);e.push(r)},t.exports=n}).call(this,e("buffer").Buffer)},{buffer:18}],111:[function(e,t,n){arguments[4][5][0].apply(n,arguments)},{"./decode":109,"./encode":110,dup:5}],112:[function(e,t){(function(e){function n(e,t){function n(){if(!o){if(r("throwDeprecation"))throw new Error(t);r("traceDeprecation")?console.trace(t):console.warn(t),o=!0}return e.apply(this,arguments)}if(r("noDeprecation"))return e;var o=!1;return n}function r(t){try{if(!e.localStorage)return!1}catch(n){return!1}var r=e.localStorage[t];return null==r?!1:"true"===String(r).toLowerCase()}t.exports=n}).call(this,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{}],113:[function(e,t){(function(n){function r(e){var t=this;a.call(t),t._tracks=[],t._fragmentSequence=1,t._file=e,t._decoder=null,t._findMoov(0)}function o(e,t){var n=this;n._entries=e,n._countName=t||"count",n._index=0,n._offset=0,n.value=n._entries[0]}function i(){return{version:0,flags:0,entries:[]}}var s=e("binary-search"),a=e("events").EventEmitter,u=e("inherits"),c=e("mp4-stream"),f=e("mp4-box-encoding"),d=e("range-slice-stream");t.exports=r,u(r,a),r.prototype._findMoov=function(e){var t=this;t._decoder&&t._decoder.destroy(),t._decoder=c.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(r){r.message="Cannot parse mp4 file: "+r.message,t.emit("error",r)}}):(n.destroy(),t._findMoov(e+r.length))})},o.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]},r.prototype._processMoov=function(e){var t=this,r=e.traks;t._tracks=[],t._hasVideo=!1,t._hasAudio=!1;for(var s=0;s<r.length;s++){var a,u,c=r[s],d=c.mdia.minf.stbl,h=d.stsd.entries[0],l=c.mdia.hdlr.handlerType;if("vide"===l&&"avc1"===h.type){if(t._hasVideo)continue;t._hasVideo=!0,a="avc1",h.avcC&&(a+="."+h.avcC.mimeCodec),u='video/mp4; codecs="'+a+'"'}else{if("soun"!==l||"mp4a"!==h.type)continue;if(t._hasAudio)continue;t._hasAudio=!0,a="mp4a",h.esds&&h.esds.mimeCodec&&(a+="."+h.esds.mimeCodec),u='audio/mp4; codecs="'+a+'"'}var p=[],m=0,g=0,y=0,_=0,v=0,b=0,w=new o(d.stts.entries),E=null;d.ctts&&(E=new o(d.ctts.entries));for(var k=0;;){var x=d.stsc.entries[v],S=d.stsz.entries[m],B=w.value.duration,A=E?E.value.compositionOffset:0,I=!0;if(d.stss&&(I=d.stss.entries[k]===m+1),p.push({size:S,duration:B,dts:b,presentationOffset:A,sync:I,offset:_+d.stco.entries[y]}),m++,m>=d.stsz.entries.length)break;if(g++,_+=S,g>=x.samplesPerChunk){g=0,_=0,y++;var T=d.stsc.entries[v+1];T&&y+1>=T.firstChunk&&v++}b+=B,w.inc(),E&&E.inc(),I&&k++}c.mdia.mdhd.duration=0,c.tkhd.duration=0;var C=x.sampleDescriptionId,L={type:"moov",mvhd:e.mvhd,traks:[{tkhd:c.tkhd,mdia:{mdhd:c.mdia.mdhd,hdlr:c.mdia.hdlr,elng:c.mdia.elng,minf:{vmhd:c.mdia.minf.vmhd,smhd:c.mdia.minf.smhd,dinf:c.mdia.minf.dinf,stbl:{stsd:d.stsd,stts:i(),ctts:i(),stsc:i(),stsz:i(),stco:i(),stss:i()}}}}],mvex:{mehd:{fragmentDuration:e.mvhd.duration},trexs:[{trackId:c.tkhd.trackId,defaultSampleDescriptionIndex:C,defaultSampleDuration:0,defaultSampleSize:0,defaultSampleFlags:0}]}};t._tracks.push({trackId:c.tkhd.trackId,timeScale:c.mdia.mdhd.timeScale,samples:p,currSample:null,currTime:null,moov:L,mime:u})}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 R=f.encode(t._ftyp),U=t._tracks.map(function(e){var t=f.encode(e.moov);return{mime:e.mime,init:n.concat([R,t])}});t.emit("ready",U)},r.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 a=r.inStream.slice(e.ranges);a.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=c.encode(),a=t._generateFragment(o,e);return a?((-1===n||a.ranges[0].start<n)&&(n=a.ranges[0].start),void i(a)):s.finalize()}),n>=0){var r=t._fileStream=t._file.createReadStream({start:n});t._tracks.forEach(function(e){e.inStream=new d(n,{highWaterMark:1e7}),r.pipe(e.inStream)})}return t._tracks.map(function(e){return e.outStream})},r.prototype._findSampleBefore=function(e,t){var n=this,r=n._tracks[e],o=Math.floor(r.timeScale*t),i=s(r.samples,o,function(e,t){var n=e.dts+e.presentationOffset;return n-t});for(-1===i?i=0:0>i&&(i=-i-2);!r.samples[i].sync;)i--;return i};var h=1;r.prototype._generateFragment=function(e,t){var n,r=this,o=r._tracks[e];if(n=void 0!==t?r._findSampleBefore(e,t):o.currSample,n>=o.samples.length)return null;for(var i=o.samples[n].dts,s=0,a=[],u=n;u<o.samples.length;u++){var c=o.samples[u];if(c.sync&&c.dts-i>=o.timeScale*h)break;s+=c.size;var f=a.length-1;0>f||a[f].end!==c.offset?a.push({start:c.offset,end:c.offset+c.size}):a[f].end+=c.size}return o.currSample=u,{moof:r._generateMoof(e,n,u),ranges:a,length:s}},r.prototype._generateMoof=function(e,t,n){for(var r=this,o=r._tracks[e],i=[],s=t;n>s;s++){var a=o.samples[s];i.push({sampleDuration:a.duration,sampleSize:a.size,sampleFlags:a.sync?33554432:16842752,sampleCompositionTimeOffset:a.presentationOffset})}var u={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 u.trafs[0].trun.dataOffset+=f.encodingLength(u),u}}).call(this,e("buffer").Buffer)},{"binary-search":6,buffer:18,events:29,inherits:36,"mp4-box-encoding":48,"mp4-stream":51,"range-slice-stream":69}],114:[function(e,t){function n(e,t,o){var i=this;return this instanceof n?(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),void 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":113,mediasource:44,pump:62}],115:[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?(h.call(i),e||(e={}),i.peerId="string"==typeof e.peerId?e.peerId:a.isBuffer(e.peerId)?e.peerId.toString("hex"):a.from(A+b(9).toString("base64")).toString("hex"),i.peerIdBuffer=a.from(i.peerId,"hex"),i.nodeId="string"==typeof e.nodeId?e.nodeId:a.isBuffer(e.nodeId)?e.nodeId.toString("hex"):b(20).toString("hex"),i.nodeIdBuffer=a.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=void 0!==e.tracker?e.tracker:{},i.torrents=[],i.maxConns=Number(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 k?i._tcpPool=new k(i):n.nextTick(function(){i._onListening()}),i._downloadSpeed=w(),i._uploadSpeed=w(),e.dht!==!1&&"function"==typeof d?(i.dht=new d(l({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=e.webSeeds!==!1,void("function"==typeof m&&null!=e.blocklist?m(e.blocklist,{headers:{"user-agent":"WebTorrent/"+S+" (https://webtorrent.io)"}},function(e,n){return e?i.error("Failed to load blocklist: "+e.message):(i.blocked=n,void 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 a=e("safe-buffer").Buffer,u=e("simple-concat"),c=e("create-torrent"),f=e("debug")("webtorrent"),d=e("bittorrent-dht/client"),h=e("events").EventEmitter,l=e("xtend"),p=e("inherits"),m=e("load-ip-set"),g=e("run-parallel"),y=e("parse-torrent"),_=e("path"),v=e("simple-peer"),b=e("randombytes"),w=e("speedometer"),E=e("zero-fill"),k=e("./lib/tcp-pool"),x=e("./lib/torrent"),S=e("./package.json").version,B=S.match(/([0-9]+)/g).slice(0,2).map(function(e){return E(2,e)}).join(""),A="-WW"+B+"-";p(o,h),o.WEBRTC_SUPPORT=v.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,n,r=this,o=r.torrents.length;if(e instanceof x){for(t=0;o>t;t++)if(n=r.torrents[t],n===e)return n}else{var i;try{i=y(e)}catch(s){}if(!i)return null;if(!i.infoHash)throw new Error("Invalid torrent identifier");for(t=0;o>t;t++)if(n=r.torrents[t],n.infoHash===i.infoHash)return n}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,t=s.torrents.length;t>e;e++){var n=s.torrents[e];if(n.infoHash===a.infoHash&&n!==a)return void a._destroy(new Error("Cannot add duplicate torrent "+a.infoHash))}}function o(){s.destroyed||("function"==typeof n&&n(a),s.emit("torrent",a))}function i(){a.removeListener("_infoHash",r),a.removeListener("ready",o),a.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?l(t):{};var a=new x(e,s,t);return s.torrents.push(a),a.once("_infoHash",r),a.once("ready",o),a.once("close",i),a},o.prototype.seed=function(e,t,n){function r(e){var t=[function(t){e.load(f,t)}];a.dht&&t.push(function(t){e.once("dhtAnnounce",t)}),g(t,function(t){return a.destroyed?void 0:t?e._destroy(t):void o(e)})}function o(e){a._debug("on seed"),"function"==typeof n&&n(e),e.emit("seed"),a.emit("seed",e)}var a=this;if(a.destroyed)throw new Error("client is destroyed");if("function"==typeof t)return a.seed(e,null,t);a._debug("seed"),t=t?l(t):{},"string"==typeof e&&(t.path=_.dirname(e)),t.createdBy||(t.createdBy="WebTorrent/"+B);var f,d=a.add(null,t,r);return s(e)&&(e=Array.prototype.slice.call(e)),Array.isArray(e)||(e=[e]),g(e.map(function(e){return function(t){i(e)?u(e,t):t(null,e)}}),function(e,n){return a.destroyed?void 0:e?d._destroy(e):void c.parseInput(n,t,function(e,r){if(!a.destroyed){if(e)return d._destroy(e);f=r.map(function(e){return e.getStream}),c(n,t,function(e,n){if(!a.destroyed){if(e)return d._destroy(e);var r=a.get(n);r?d._destroy(new Error("Cannot add duplicate torrent "+r.infoHash)):d._onTorrentId(n,t.forced_id)}})}})}),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)}),g(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],f.apply(null,e)}}).call(this,e("_process"),"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{"./lib/tcp-pool":15,"./lib/torrent":120,"./package.json":122,_process:61,"bittorrent-dht/client":15,"create-torrent":23,debug:24,events:29,inherits:36,"load-ip-set":15,"parse-torrent":57,path:58,randombytes:68,"run-parallel":80,"safe-buffer":82,"simple-concat":83,"simple-peer":85,speedometer:88,xtend:124,"zero-fill":126}],116:[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=(n+e.offset)/o|0,this._endPiece=(r+e.offset)/o|0,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=Math.min(1048576/o|0,2)}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){if(e._notifying=!1,!e.destroyed){if(n)return e._destroy(n);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:24,inherits:36,"readable-stream":76}],117:[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=n/this._torrent.pieceLength|0,this._endPiece=r/this._torrent.pieceLength|0,0===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"),a=e("inherits"),u=e("path"),c=e("render-media"),f=e("readable-stream"),d=e("stream-to-blob"),h=e("stream-to-blob-url"),l=e("stream-with-known-length-to-buffer");a(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}}),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 f.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){l(this.createReadStream(),this.length,e)},r.prototype.getBlob=function(e){if("undefined"==typeof window)throw new Error("browser-only method");d(this.createReadStream(),this._getMimeType(),e)},r.prototype.getBlobURL=function(e){if("undefined"==typeof window)throw new Error("browser-only method");h(this.createReadStream(),this._getMimeType(),e)},r.prototype.appendTo=function(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");c.append(this,e,t,n)},r.prototype.renderTo=function(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");c.render(this,e,t,n)},r.prototype._getMimeType=function(){return c.mime[u.extname(this.name).toLowerCase()]},r.prototype._destroy=function(){this._destroyed=!0,this._torrent=null}}).call(this,e("_process"))},{"./file-stream":116,_process:61,"end-of-stream":27,events:29,inherits:36,path:58,"readable-stream":76,"render-media":77,"stream-to-blob":94,"stream-to-blob-url":93,"stream-with-known-length-to-buffer":95}],118:[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"),a=e("bittorrent-protocol"),u=e("./webconn"),c=5e3,f=25e3,d=25e3;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 u(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 a;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"]?!1:!!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?f:c),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"))},d),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,a=t.wire;t.swarm=null,t.conn=null,t.wire=null,n&&a&&i(n.wires,n.wires.indexOf(a)),r&&(r.on("error",o),r.destroy()),a&&a.destroy(),n&&n.removePeer(t.id)}}},{"./webconn":121,"bittorrent-protocol":8,debug:24,"unordered-array-remove":105}],119:[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=1/0,o=0;o<this._numPieces;++o)if(e(o)){var i=this._pieces[o];i===n?t.push(o):n>i&&(t=[o],n=i)}return t.length>0?t[Math.random()*t.length|0]:-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;t>e;++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}},{}],120:[function(e,t){(function(n,r){function o(e,t,n){m.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||v,this._getAnnounceOpts=n.getAnnounceOpts,this.strategy=n.strategy||"sequential",this.maxWebConns=n.maxWebConns||4,this._rechokeNumSlots=n.uploads===!1||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=P(),this._uploadSpeed=P(),this._servers=[],this._xsRequests=[],this._fileModtimes=n.fileModtimes,null!==e&&this._onTorrentId(e),this._debug("new torrent")}function i(e,t){return 2+Math.ceil(t*e.downloadSpeed()/C.BLOCK_LENGTH)}function s(e,t,n){return 1+Math.ceil(t*e.downloadSpeed()/n)}function a(e){return Math.random()*e|0}function u(){}t.exports=o;var c,f=e("addr-to-ip-port"),d=e("bitfield"),h=e("chunk-store-stream/write"),l=e("debug")("webtorrent:torrent"),p=e("torrent-discovery"),m=e("events").EventEmitter,g=e("xtend"),y=e("xtend/mutable"),_=e("fs"),v=e("fs-chunk-store"),b=e("simple-get"),w=e("immediate-chunk-store"),E=e("inherits"),k=e("multistream"),x=e("net"),S=e("os"),B=e("run-parallel"),A=e("run-parallel-limit"),I=e("parse-torrent"),T=e("path"),C=e("torrent-piece"),L=e("pump"),R=e("random-iterate"),U=e("simple-sha1"),P=e("speedometer"),O=e("uniq"),M=e("ut_metadata"),j=e("ut_pex"),H=e("./file"),D=e("./peer"),q=e("./rarity-map"),N=e("./server"),W=131072,z=3e4,F=5e3,Y=3*C.BLOCK_LENGTH,V=.5,G=1,$=1e4,K=2,X=2,J=[1e3,5e3,15e3],Z=e("../package.json").version,Q="WebTorrent/"+Z+" (https://webtorrent.io)";try{c=T.join(_.statSync("/tmp")&&"/tmp","webtorrent")}catch(ee){c=T.join("function"==typeof S.tmpDir?S.tmpDir():"/","webtorrent")}E(o,m),Object.defineProperty(o.prototype,"timeRemaining",{get:function(){return this.done?0:0===this.downloadSpeed?1/0:(this.length-this.downloaded)/this.downloadSpeed*1e3}}),Object.defineProperty(o.prototype,"downloaded",{get:function(){if(!this.bitfield)return 0;for(var e=0,t=0,n=this.pieces.length;n>t;++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(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(){return this.length?this.downloaded/this.length:0}}),Object.defineProperty(o.prototype,"ratio",{get:function(){return this.uploaded/(this.received||1)}}),Object.defineProperty(o.prototype,"numPeers",{get:function(){return this.wires.length}}),Object.defineProperty(o.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(o.prototype,"_numQueued",{get:function(){return this._queue.length+(this._peersLength-this._numConns)}}),Object.defineProperty(o.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(o.prototype,"swarm",{get:function(){return console.warn("WebTorrent: `torrent.swarm` is deprecated. Use `torrent` directly instead."),this}}),o.prototype._onTorrentId=function(e,t){var r=this;if(!r.destroyed){var o;try{o=I(e)}catch(i){}o?(r.infoHash=o.infoHash,r._debugId=o.infoHash.toString("hex").substring(0,7),n.nextTick(function(){r.destroyed||r._onParsedTorrent(o,t)})):I.remote(e,function(e,n){return r.destroyed?void 0:e?r._destroy(e):void r._onParsedTorrent(n,t)})}},o.prototype._onParsedTorrent=function(e,t){var n=this;if(!n.destroyed){if(n._processParsedTorrent(e),!n.infoHash)return n._destroy(new Error("Malformed torrent data: No info hash"));n.path||(n.path=T.join(c,n.infoHash)),n._rechokeIntervalId=setInterval(function(){n._rechoke()},$),n._rechokeIntervalId.unref&&n._rechokeIntervalId.unref(),t?(n.emit("_infoHash",t),n.emit("infoHash",t),n.infoHash=t):(n.emit("_infoHash",n.infoHash),n.emit("infoHash",n.infoHash)),n.destroyed||(n.client.listening?n._onListening():n.client.once("listening",function(){n._onListening()}))}},o.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&&r.WEBTORRENT_ANNOUNCE&&!this["private"]&&(e.announce=e.announce.concat(r.WEBTORRENT_ANNOUNCE)),this.urlList&&(e.urlList=e.urlList.concat(this.urlList)),O(e.announce),O(e.urlList),y(this,e),this.magnetURI=I.toMagnetURI(e),this.torrentFile=I.toTorrentFile(e)},o.prototype._onListening=function(){function e(e){i._destroy(e)}function t(e){"string"==typeof e&&i.done||i.addPeer(e)}function n(){i.emit("trackerAnnounce"),0===i.numPeers&&i.emit("noPeers","tracker")}function r(){i.emit("dhtAnnounce"),0===i.numPeers&&i.emit("noPeers","dht")}function o(e){i.emit("warning",e)}var i=this;if(!i.discovery&&!i.destroyed){var s=i.client.tracker;s&&(s=g(i.client.tracker,{getAnnounceOpts:function(){var e={uploaded:i.uploaded,downloaded:i.downloaded,left:Math.max(i.length-i.downloaded,0)};return i.client.tracker.getAnnounceOpts&&y(e,i.client.tracker.getAnnounceOpts()),i._getAnnounceOpts&&y(e,i._getAnnounceOpts()),e}})),i.discovery=new p({infoHash:i.infoHash,announce:i.announce,peerId:i.client.peerId,dht:!i["private"]&&i.client.dht,tracker:s,port:i.client.torrentPort,userAgent:Q}),i.discovery.on("error",e),i.discovery.on("peer",t),i.discovery.on("trackerAnnounce",n),i.discovery.on("dhtAnnounce",r),i.discovery.on("warning",o),i.info?i._onMetadata(i):i.xs&&i._getMetadataFromServer()}},o.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=I(i)}catch(r){}return s?s.infoHash!==t.infoHash?(t.emit("warning",new Error("got torrent file with incorrect info hash from xs param: "+e)),n(null)):(t._onMetadata(s),void 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,i={url:e,method:"GET",headers:{"user-agent":Q}};try{o=b.concat(i,r)}catch(s){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)}});B(r)},o.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=I(e)}catch(r){return t._destroy(r)}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 q(t),t.store=new w(new t._store(t.pieceLength,{torrent:{infoHash:t.infoHash},files:t.files.map(function(e){return{path:T.join(t.path,e.path),length:e.length,offset:e.offset}}),length:t.length})),t.files=t.files.map(function(e){return new H(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 C(r)}),t._reservations=t.pieces.map(function(){return[]}),t.bitfield=new d(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===v?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")}},o.prototype.getFileModtimes=function(e){var t=this,n=[];A(t.files.map(function(e,r){return function(o){_.stat(T.join(t.path,e.path),function(e,t){return e&&"ENOENT"!==e.code?o(e):(n[r]=t&&t.mtime.getTime(),void o(null))})}}),X,function(r){t._debug("done getting file modtimes"),e(r,n)})},o.prototype._verifyPieces=function(){var e=this;A(e.pieces.map(function(t,r){return function(t){return e.destroyed?t(new Error("torrent is destroyed")):void e.store.get(r,function(o,i){return e.destroyed?t(new Error("torrent is destroyed")):o?n.nextTick(t,null):void U(i,function(n){if(e.destroyed)return t(new Error("torrent is destroyed"));if(n===e._hashes[r]){if(!e.pieces[r])return;e._debug("piece verified %s",r),e._markVerified(r)}else e._debug("piece invalid %s",r);t(null)})})}}),X,function(t){return t?e._destroy(t):(e._debug("done verifying"),void e._onStore())})},o.prototype._markVerified=function(e){this.pieces[e]=null,this._reservations[e]=null,this.bitfield.set(e,!0)},o.prototype._onStore=function(){var e=this;e.destroyed||(e._debug("on store"),e.ready=!0,e.emit("ready"),e._checkDone(),e._updateSelections())},o.prototype.destroy=function(e){var t=this;t._destroy(null,e)},o.prototype._destroy=function(e,t){var n=this;if(!n.destroyed){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();for(var r in n._peers)n.removePeer(r);n.files.forEach(function(e){e instanceof H&&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)}),B(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}},o.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=f(e)}catch(o){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 i=!!t._addPeer(e);return i?t.emit("peer",e):t.emit("invalidPeer",e),i},o.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?D.createTCPOutgoingPeer(e,t):D.createWebRTCPeer(e,t),t._peers[r.id]=r,t._peersLength+=1,"string"==typeof e&&(t._queue.push(r),t._drain()),r},o.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=D.createWebSeedPeer(e,this);this._peers[t.id]=t,this._peersLength+=1,this.emit("peer",e)},o.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")):(this._debug("add incoming peer %s",e.id),t._peers[e.id]=e,void(t._peersLength+=1))},o.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())},o.prototype.select=function(e,t,n,r){var o=this;if(o.destroyed)throw new Error("torrent is destroyed");if(0>e||e>t||o.pieces.length<=t)throw new Error("invalid selection ",e,":",t);n=Number(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||u}),o._selections.sort(function(e,t){return t.priority-e.priority}),o._updateSelections()},o.prototype.deselect=function(e,t,n){var r=this;if(r.destroyed)throw new Error("torrent is destroyed");n=Number(n)||0,r._debug("deselect %s-%s (priority %s)",e,t,n);for(var o=0;o<r._selections.length;++o){var i=r._selections[o];if(i.from===e&&i.to===t&&i.priority===n){r._selections.splice(o--,1);break}}r._updateSelections()},o.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;t>=r;++r)n._critical[r]=!0;n._updateSelections()},o.prototype._onWire=function(e,t){var r=this;if(r._debug("got wire %s (%s)",e._debugId,t||"Unknown"),e.on("download",function(e){r.destroyed||(r.received+=e,r._downloadSpeed(e),r.client._downloadSpeed(e),r.emit("download",e),r.client.emit("download",e))}),e.on("upload",function(e){r.destroyed||(r.uploaded+=e,r._uploadSpeed(e),r.client._uploadSpeed(e),r.emit("upload",e),r.client.emit("upload",e))}),r.wires.push(e),t){var o=f(t);e.remoteAddress=o[0],e.remotePort=o[1]}r.client.dht&&r.client.dht.listening&&e.on("port",function(n){if(!r.destroyed&&!r.client.dht.destroyed){if(!e.remoteAddress)return r._debug("ignoring PORT from peer with no address");if(0===n||n>65536)return r._debug("ignoring invalid PORT from peer");r._debug("port: %s (from %s)",n,t),r.client.dht.addNode({host:e.remoteAddress,port:n})}}),e.on("timeout",function(){r._debug("wire timeout (%s)",t),e.destroy()}),e.setTimeout(z,!0),e.setKeepAlive(!0),e.use(M(r.metadata)),e.ut_metadata.on("warning",function(e){r._debug("ut_metadata warning: %s",e.message)}),r.metadata||(e.ut_metadata.on("metadata",function(e){r._debug("got metadata via ut_metadata"),r._onMetadata(e)}),e.ut_metadata.fetch()),"function"!=typeof j||r["private"]||(e.use(j()),e.ut_pex.on("peer",function(e){r.done||(r._debug("ut_pex: got peer: %s (from %s)",e,t),r.addPeer(e))}),e.ut_pex.on("dropped",function(e){var n=r._peers[e];n&&!n.connected&&(r._debug("ut_pex: dropped peer: %s (from %s)",e,t),r.removePeer(e))}),e.once("close",function(){e.ut_pex.reset()})),r.emit("wire",e,t),r.metadata&&n.nextTick(function(){r._onWireWithMetadata(e)})},o.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.length===r.pieces.length){for(;i<r.pieces.length;++i)if(!e.peerPieces.get(i))return;e.isSeeder=!0,e.choke()}}var r=this,o=null,i=0;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>W?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()},o.prototype._updateSelections=function(){var e=this;e.ready&&!e.destroyed&&(n.nextTick(function(){e._gcSelections()}),e._updateInterest(),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++;r!==n.offset&&n.notify(),n.to===n.from+n.offset&&e.bitfield.get(n.from+n.offset)&&(e._selections.splice(t--,1),n.notify(),e._updateInterest())}e._selections.length||e.emit("idle")},o.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.emit(e._amInterested?"interested":"uninterested")},o.prototype._update=function(){var e=this;if(!e.destroyed)for(var t,n=R(e.wires);t=n();)e._updateWire(t)},o.prototype._updateWire=function(e){function t(t,n,r,o){return function(i){return i>=t&&n>=i&&!(i in r)&&e.peerPieces.get(i)&&(!o||o(i))}}function n(){if(!e.requests.length)for(var n=a._selections.length;n--;){var r,o=a._selections[n];if("rarest"===a.strategy)for(var i=o.from+o.offset,s=o.to,u=s-i+1,c={},f=0,d=t(i,s,c);u>f&&(r=a._rarityMap.getRarestPiece(d),!(0>r));){if(a._request(e,r,!1))return;c[r]=!0,f+=1}else for(r=o.to;r>=o.from+o.offset;--r)if(e.peerPieces.get(r)&&a._request(e,r,!1))return}}function r(){var t=e.downloadSpeed()||1;if(t>Y)return function(){return!0};var n=Math.max(1,e.requests.length)*C.BLOCK_LENGTH/t,r=10,o=0;return function(e){if(!r||a.bitfield.get(e))return!0;for(var i=a.pieces[e].missing;o<a.wires.length;o++){var s=a.wires[o],u=s.downloadSpeed();if(!(Y>u||t>=u||!s.peerPieces.get(e)||(i-=u*n)>0))return r--,!1}return!0}}
function o(e){for(var t=e,n=e;n<a._selections.length&&a._selections[n].priority;n++)t=n;var r=a._selections[e];a._selections[e]=a._selections[t],a._selections[t]=r}function s(n){if(e.requests.length>=c)return!0;for(var i=r(),s=0;s<a._selections.length;s++){var u,f=a._selections[s];if("rarest"===a.strategy)for(var d=f.from+f.offset,h=f.to,l=h-d+1,p={},m=0,g=t(d,h,p,i);l>m&&(u=a._rarityMap.getRarestPiece(g),!(0>u));){for(;a._request(e,u,a._critical[u]||n););if(!(e.requests.length<c))return f.priority&&o(s),!0;p[u]=!0,m++}else for(u=f.from+f.offset;u<=f.to;u++)if(e.peerPieces.get(u)&&i(u)){for(;a._request(e,u,a._critical[u]||n););if(!(e.requests.length<c))return f.priority&&o(s),!0}}return!1}var a=this;if(!e.peerChoking){if(!e.downloaded)return n();var u=i(e,V);if(!(e.requests.length>=u)){var c=i(e,G);s(!1)||s(!0)}}},o.prototype._rechoke=function(){function e(e,t){return e.downloadSpeed!==t.downloadSpeed?t.downloadSpeed-e.downloadSpeed:e.uploadSpeed!==t.uploadSpeed?t.uploadSpeed-e.uploadSpeed:e.wire.amChoking!==t.wire.amChoking?e.wire.amChoking?1:-1:e.salt-t.salt}var t=this;if(t.ready){t._rechokeOptimisticTime>0?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[a(i.length)];s&&(s.isChoked=!1,t._rechokeOptimisticWire=s.wire,t._rechokeOptimisticTime=K)}n.forEach(function(e){e.wire.amChoking!==e.isChoked&&(e.isChoked?e.wire.choke():e.wire.unchoke())})}},o.prototype._hotswap=function(e,t){var n=this,r=e.downloadSpeed();if(r<C.BLOCK_LENGTH)return!1;if(!n._reservations[t])return!1;var o=n._reservations[t];if(!o)return!1;var i,s,a=1/0;for(s=0;s<o.length;s++){var u=o[s];if(u&&u!==e){var c=u.downloadSpeed();c>=Y||2*c>r||c>a||(i=u,a=c)}}if(!i)return!1;for(s=0;s<o.length;s++)o[s]===i&&(o[s]=null);for(s=0;s<i.requests.length;s++){var f=i.requests[s];f.piece===t&&n.pieces[t].cancel(f.offset/C.BLOCK_LENGTH|0)}return n.emit("hotswap",i,e,t),!0},o.prototype._request=function(e,t,r){function o(){n.nextTick(function(){a._update()})}var a=this,u=e.requests.length,c="webSeed"===e.type;if(a.bitfield.get(t))return!1;var f=c?Math.min(s(e,G,a.pieceLength),a.maxWebConns):i(e,G);if(u>=f)return!1;var d=a.pieces[t],h=c?d.reserveRemaining():d.reserve();if(-1===h&&r&&a._hotswap(e,t)&&(h=c?d.reserveRemaining():d.reserve()),-1===h)return!1;var l=a._reservations[t];l||(l=a._reservations[t]=[]);var p=l.indexOf(null);-1===p&&(p=l.length),l[p]=e;var m=d.chunkOffset(h),g=c?d.chunkLengthRemaining(h):d.chunkLength(h);return e.request(t,m,g,function y(n,r){if(!a.ready)return a.once("ready",function(){y(n,r)});if(l[p]===e&&(l[p]=null),d!==a.pieces[t])return o();if(n)return a._debug("error getting piece %s (offset: %s length: %s) from %s: %s",t,m,g,e.remoteAddress+":"+e.remotePort,n.message),c?d.cancelRemaining(h):d.cancel(h),void o();if(a._debug("got piece %s (offset: %s length: %s) from %s",t,m,g,e.remoteAddress+":"+e.remotePort),!d.set(h,r,e))return o();var i=d.flush();U(i,function(e){if(!a.destroyed){if(e===a._hashes[t]){if(!a.pieces[t])return;a._debug("piece verified %s",t),a.pieces[t]=null,a._reservations[t]=null,a.bitfield.set(t,!0),a.store.put(t,i),a.wires.forEach(function(e){e.have(t)}),a._checkDone()&&!a.destroyed&&a.discovery.complete()}else a.pieces[t]=new C(d.length),a.emit("warning",new Error("Piece "+t+" failed verification"));o()}})}),!0},o.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;n<e._selections.length;n++){for(var r=e._selections[n],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}},o.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=u);var r=new k(e),o=new h(n.store,n.pieceLength);L(r,o,function(e){return e?t(e):(n.pieces.forEach(function(e,t){n.pieces[t]=null,n._reservations[t]=null,n.bitfield.set(t,!0)}),n._checkDone(),void t(null))})},o.prototype.createServer=function(e){if("function"!=typeof N)throw new Error("node.js-only method");if(this.destroyed)throw new Error("torrent is destroyed");var t=new N(this,e);return this._servers.push(t),t},o.prototype.pause=function(){this.destroyed||(this._debug("pause"),this.paused=!0)},o.prototype.resume=function(){this.destroyed||(this._debug("resume"),this.paused=!1,this._drain())},o.prototype._debug=function(){var e=[].slice.call(arguments);e[0]="["+this.client._debugId+"] ["+this._debugId+"] "+e[0],l.apply(null,e)},o.prototype._drain=function(){var e=this;if(this._debug("_drain numConns %s maxConns %s",e._numConns,e.client.maxConns),!("function"!=typeof x.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=f(t.addr),r={host:n[0],port:n[1]},o=t.conn=x.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>=J.length)return void e._debug("conn %s closed: will not re-add (max %s attempts)",t.addr,J.length);var n=J[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()}})}}},o.prototype._validAddr=function(e){var t;try{t=f(e)}catch(n){return!1}var r=t[0],o=t[1];return o>0&&65535>o&&!("127.0.0.1"===r&&o===this.client.torrentPort)}}).call(this,e("_process"),"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{})},{"../package.json":122,"./file":117,"./peer":118,"./rarity-map":119,"./server":15,_process:61,"addr-to-ip-port":1,bitfield:7,"chunk-store-stream/write":20,debug:24,events:29,fs:16,"fs-chunk-store":45,"immediate-chunk-store":35,inherits:36,multistream:53,net:15,os:15,"parse-torrent":57,path:58,pump:62,"random-iterate":67,"run-parallel":80,"run-parallel-limit":79,"simple-get":84,"simple-sha1":86,speedometer:88,"torrent-discovery":100,"torrent-piece":101,uniq:104,ut_metadata:108,ut_pex:15,xtend:124,"xtend/mutable":125}],121:[function(e,t){function n(e,t){c.call(this),this.url=e,this.webPeerId=u.sync(e),this._torrent=t,this._init()}t.exports=n;var r=e("bitfield"),o=e("safe-buffer").Buffer,i=e("debug")("webtorrent:webconn"),s=e("simple-get"),a=e("inherits"),u=e("simple-sha1"),c=e("bittorrent-protocol"),f=e("../package.json").version;a(n,c),n.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,o=new r(n),i=0;n>=i;i++)o.set(i,!0);e.bitfield(o)}}),e.once("interested",function(){i("interested"),e.unchoke()}),e.on("uninterested",function(){i("uninterested")}),e.on("choke",function(){i("choke")}),e.on("unchoke",function(){i("unchoke")}),e.on("bitfield",function(){i("bitfield")}),e.on("request",function(t,n,r,o){i("request pieceIndex=%d offset=%d length=%d",t,n,r),e.httpRequest(t,n,r,o)})},n.prototype.httpRequest=function(e,t,n,r){var a,u=this,c=e*u._torrent.pieceLength,d=c+t,h=d+n-1,l=u._torrent.files;if(l.length<=1)a=[{url:u.url,start:d,end:h}];else{var p=l.filter(function(e){return e.offset<=h&&e.offset+e.length>d});if(p.length<1)return r(new Error("Could not find file corresponnding to web seed range request"));a=p.map(function(e){var t=e.offset+e.length-1,n=u.url+("/"===u.url[u.url.length-1]?"":"/")+e.path;return{url:n,fileOffsetInRange:Math.max(e.offset-d,0),start:Math.max(d-e.offset,0),end:Math.min(t,h-e.offset)}})}var m,g=0,y=!1;a.length>1&&(m=o.alloc(n)),a.forEach(function(o){function u(e,t){return e.statusCode<200||e.statusCode>=300?(y=!0,r(new Error("Unexpected HTTP status code "+e.statusCode))):(i("Got data of length %d",t.length),void(1===a.length?r(null,t):(t.copy(m,o.fileOffsetInRange),++g===a.length&&r(null,m))))}var c=o.url,d=o.start,h=o.end;i("Requesting url=%s pieceIndex=%d offset=%d length=%d start=%d end=%d",c,e,t,n,d,h);var l={url:c,method:"GET",headers:{"user-agent":"WebTorrent/"+f+" (https://webtorrent.io)",range:"bytes="+d+"-"+h}};s.concat(l,function(e,t,n){return y?void 0:e?"undefined"==typeof window||c.startsWith(window.location.origin+"/")?(y=!0,r(e)):s.head(c,function(t,n){if(!y){if(t)return y=!0,r(t);if(n.statusCode<200||n.statusCode>=300)return y=!0,r(new Error("Unexpected HTTP status code 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r=Object.prototype.hasOwnProperty},{}],125:[function(e,t){function n(e){for(var t=1;t<arguments.length;t++){var n=arguments[t];for(var o in n)r.call(n,o)&&(e[o]=n[o])}return e}t.exports=n;var r=Object.prototype.hasOwnProperty},{}],126:[function(e,t){t.exports=function n(e,t,r){return void 0===t?function(t,r){return n(e,t,r)}:(void 0===r&&(r="0"),e-=t.toString().length,e>0?new Array(e+(/\./.test(t)?2:1)).join(r)+t:t+"")}},{}],127:[function(e,t){function n(e,t){function r(e){e.files.forEach(function(e){e.getBuffer(function(e,t){if(e)return log(e.message);var n=JSON.parse(t.toString("utf8"));o(n.page,function(e){return e!=c.security_sha1[n.url]?void c.emit("message","Cached version of "+n.url+" received, has wrong security hash, rejecting it."):(c.emit("message","Cached version of "+n.url+" has a verified security hash! 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