webtorrent.min.js

(function(e){if("object"==typeof exports&&"undefined"!=typeof module)module.exports=e();else if("function"==typeof define&&define.amd)define([],e);else{var t;t="undefined"==typeof window?"undefined"==typeof global?"undefined"==typeof self?this:self:global:window,t.WebTorrent=e()}})(function(){var t=Math.abs,n=Math.pow,r=Math.floor,o=String.fromCharCode,a=Math.ceil,d=Math.max,s=Math.min,l;return function(){function d(s,e,n){function t(o,i){if(!e[o]){if(!s[o]){var l="function"==typeof require&&require;if(!i&&l)return l(o,!0);if(r)return r(o,!0);var c=new Error("Cannot find module '"+o+"'");throw c.code="MODULE_NOT_FOUND",c}var a=e[o]={exports:{}};s[o][0].call(a.exports,function(e){var r=s[o][1][e];return t(r||e)},a,a.exports,d,s,e,n)}return e[o].exports}for(var r="function"==typeof require&&require,o=0;o<n.length;o++)t(n[o]);return t}return d}()({1:[function(e,t){const n=e("debug")("webtorrent:file-stream"),r=e("readable-stream");class o extends r.Readable{constructor(e,t){super(t),this.destroyed=!1,this._torrent=e._torrent;const 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=s(0|1048576/o,2)}_read(){this._reading||(this._reading=!0,this._notify())}_notify(){if(!this._reading||0===this._missing)return;if(!this._torrent.bitfield.get(this._piece))return this._torrent.critical(this._piece,this._piece+this._criticalLength);if(this._notifying)return;if(this._notifying=!0,this._torrent.destroyed)return this._destroy(new Error("Torrent removed"));const e=this._piece;this._torrent.store.get(e,(t,r)=>{if(this._notifying=!1,!this.destroyed)return n("read %s (length %s) (err %s)",e,r.length,t&&t.message),t?this._destroy(t):void(this._offset&&(r=r.slice(this._offset),this._offset=0),this._missing<r.length&&(r=r.slice(0,this._missing)),this._missing-=r.length,n("pushing buffer of length %s",r.length),this._reading=!1,this.push(r),0===this._missing&&this.push(null))}),this._piece+=1}destroy(e){this._destroy(null,e)}_destroy(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())}}t.exports=o},{debug:30,"readable-stream":85}],2:[function(e,t){(function(n){const{EventEmitter:r}=e("events"),{PassThrough:o}=e("readable-stream"),i=e("end-of-stream"),a=e("path"),l=e("render-media"),c=e("stream-to-blob"),u=e("stream-to-blob-url"),f=e("stream-with-known-length-to-buffer"),p=e("./file-stream");class h extends r{constructor(e,t){super(),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;const 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"))}get downloaded(){if(!this._torrent.bitfield)return 0;const{pieces:e,bitfield:t,pieceLength:n}=this._torrent,{_startPiece:r,_endPiece:o}=this,i=e[r],a=this.offset%n;let l=t.get(r)?n-a:d(n-a-i.missing,0);for(let i=r+1;i<=o;++i)if(t.get(i))l+=n;else{const t=e[i];l+=n-t.missing}return s(l,this.length)}get progress(){return this.length?this.downloaded/this.length:0}select(e){0===this.length||this._torrent.select(this._startPiece,this._endPiece,e)}deselect(){0===this.length||this._torrent.deselect(this._startPiece,this._endPiece,!1)}createReadStream(e){if(0===this.length){const e=new o;return n.nextTick(()=>{e.end()}),e}const t=new p(this,e);return this._torrent.select(t._startPiece,t._endPiece,!0,()=>{t._notify()}),i(t,()=>{this._destroyed||!this._torrent.destroyed&&this._torrent.deselect(t._startPiece,t._endPiece,!0)}),t}getBuffer(e){f(this.createReadStream(),this.length,e)}getBlob(e){if("undefined"==typeof window)throw new Error("browser-only method");c(this.createReadStream(),this._getMimeType()).then(t=>e(null,t),t=>e(t))}getBlobURL(e){if("undefined"==typeof window)throw new Error("browser-only method");u(this.createReadStream(),this._getMimeType()).then(t=>e(null,t),t=>e(t))}appendTo(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");l.append(this,e,t,n)}renderTo(e,t,n){if("undefined"==typeof window)throw new Error("browser-only method");l.render(this,e,t,n)}_getMimeType(){return l.mime[a.extname(this.name).toLowerCase()]}_destroy(){this._destroyed=!0,this._torrent=null}}t.exports=h}).call(this,e("_process"))},{"./file-stream":1,_process:61,"end-of-stream":32,events:33,path:59,"readable-stream":85,"render-media":86,"stream-to-blob":104,"stream-to-blob-url":103,"stream-with-known-length-to-buffer":105}],3:[function(e,t,n){const r=e("unordered-array-remove"),o=e("debug")("webtorrent:peer"),i=e("bittorrent-protocol"),a=e("./webconn");n.createWebRTCPeer=(e,t)=>{const n=new d(e.id,"webrtc");return n.conn=e,n.swarm=t,n.conn.connected?n.onConnect():(n.conn.once("connect",()=>{n.onConnect()}),n.conn.once("error",e=>{n.destroy(e)}),n.startConnectTimeout()),n},n.createTCPIncomingPeer=e=>{const t=`${e.remoteAddress}:${e.remotePort}`,n=new d(t,"tcpIncoming");return n.conn=e,n.addr=t,n.onConnect(),n},n.createTCPOutgoingPeer=(e,t)=>{const n=new d(e,"tcpOutgoing");return n.addr=e,n.swarm=t,n},n.createWebSeedPeer=(e,t)=>{const n=new d(e,"webSeed");return n.swarm=t,n.conn=new a(e,t),n.onConnect(),n};class d{constructor(e,t){this.id=e,this.type=t,o("new %s Peer %s",t,e),this.addr=null,this.conn=null,this.swarm=null,this.wire=null,this.connected=!1,this.destroyed=!1,this.timeout=null,this.retries=0,this.sentHandshake=!1}onConnect(){if(!this.destroyed){this.connected=!0,o("Peer %s connected",this.id),clearTimeout(this.connectTimeout);const e=this.conn;e.once("end",()=>{this.destroy()}),e.once("close",()=>{this.destroy()}),e.once("finish",()=>{this.destroy()}),e.once("error",e=>{this.destroy(e)});const t=this.wire=new i;t.type=this.type,t.once("end",()=>{this.destroy()}),t.once("close",()=>{this.destroy()}),t.once("finish",()=>{this.destroy()}),t.once("error",e=>{this.destroy(e)}),t.once("handshake",(e,t)=>{this.onHandshake(e,t)}),this.startHandshakeTimeout(),e.pipe(t).pipe(e),this.swarm&&!this.sentHandshake&&this.handshake()}}onHandshake(e,t){if(!this.swarm)return;if(this.destroyed)return;if(this.swarm.destroyed)return this.destroy(new Error("swarm already destroyed"));if(e!==this.swarm.infoHash)return this.destroy(new Error("unexpected handshake info hash for this swarm"));if(t===this.swarm.peerId)return this.destroy(new Error("refusing to connect to ourselves"));o("Peer %s got handshake %s",this.id,e),clearTimeout(this.handshakeTimeout),this.retries=0;let n=this.addr;!n&&this.conn.remoteAddress&&this.conn.remotePort&&(n=`${this.conn.remoteAddress}:${this.conn.remotePort}`),this.swarm._onWire(this.wire,n);this.swarm&&!this.swarm.destroyed&&(this.sentHandshake||this.handshake())}handshake(){const e={dht:!this.swarm.private&&!!this.swarm.client.dht};this.wire.handshake(this.swarm.infoHash,this.swarm.client.peerId,e),this.sentHandshake=!0}startConnectTimeout(){clearTimeout(this.connectTimeout),this.connectTimeout=setTimeout(()=>{this.destroy(new Error("connect timeout"))},"webrtc"===this.type?25e3:5e3),this.connectTimeout.unref&&this.connectTimeout.unref()}startHandshakeTimeout(){clearTimeout(this.handshakeTimeout),this.handshakeTimeout=setTimeout(()=>{this.destroy(new Error("handshake timeout"))},25e3),this.handshakeTimeout.unref&&this.handshakeTimeout.unref()}destroy(e){if(this.destroyed)return;this.destroyed=!0,this.connected=!1,o("destroy %s (error: %s)",this.id,e&&(e.message||e)),clearTimeout(this.connectTimeout),clearTimeout(this.handshakeTimeout);const t=this.swarm,n=this.conn,i=this.wire;this.swarm=null,this.conn=null,this.wire=null,t&&i&&r(t.wires,t.wires.indexOf(i)),n&&(n.on("error",()=>{}),n.destroy()),i&&i.destroy(),t&&t.removePeer(this.id)}}},{"./webconn":6,"bittorrent-protocol":14,debug:30,"unordered-array-remove":115}],4:[function(e,t){t.exports=class{constructor(e){this._torrent=e,this._numPieces=e.pieces.length,this._pieces=Array(this._numPieces),this._onWire=e=>{this.recalculate(),this._initWire(e)},this._onWireHave=e=>{this._pieces[e]+=1},this._onWireBitfield=()=>{this.recalculate()},this._torrent.wires.forEach(e=>{this._initWire(e)}),this._torrent.on("wire",this._onWire),this.recalculate()}getRarestPiece(e){let t=[],n=1/0;for(let r=0;r<this._numPieces;++r){if(e&&!e(r))continue;const o=this._pieces[r];o===n?t.push(r):o<n&&(t=[r],n=o)}return t.length?t[0|Math.random()*t.length]:-1}destroy(){this._torrent.removeListener("wire",this._onWire),this._torrent.wires.forEach(e=>{this._cleanupWireEvents(e)}),this._torrent=null,this._pieces=null,this._onWire=null,this._onWireHave=null,this._onWireBitfield=null}_initWire(e){e._onClose=()=>{this._cleanupWireEvents(e);for(let t=0;t<this._numPieces;++t)this._pieces[t]-=e.peerPieces.get(t)},e.on("have",this._onWireHave),e.on("bitfield",this._onWireBitfield),e.once("close",e._onClose)}recalculate(){this._pieces.fill(0);for(const e of this._torrent.wires)for(let t=0;t<this._numPieces;++t)this._pieces[t]+=e.peerPieces.get(t)}_cleanupWireEvents(e){e.removeListener("have",this._onWireHave),e.removeListener("bitfield",this._onWireBitfield),e._onClose&&e.removeListener("close",e._onClose),e._onClose=null}}},{}],5:[function(e,t){(function(n,r){function o(e,t){return 2+a(t*e.downloadSpeed()/L.BLOCK_LENGTH)}function l(e,t,n){return 1+a(t*e.downloadSpeed()/n)}function c(e){return 0|Math.random()*e}function u(){}const f=e("addr-to-ip-port"),p=e("bitfield"),h=e("chunk-store-stream/write"),m=e("debug")("webtorrent:torrent"),g=e("torrent-discovery"),_=e("events").EventEmitter,b=e("fs"),i=e("fs-chunk-store"),y=e("simple-get"),w=e("immediate-chunk-store"),k=e("multistream"),E=e("net"),x=e("os"),v=e("run-parallel"),S=e("run-parallel-limit"),C=e("parse-torrent"),I=e("path"),L=e("torrent-piece"),T=e("pump"),B=e("random-iterate"),R=e("simple-sha1"),A=e("speedometer"),U=e("uniq"),P=e("ut_metadata"),O=e("ut_pex"),N=e("parse-numeric-range"),M=e("./file"),H=e("./peer"),q=e("./rarity-map"),D=e("./server"),j=5e3,F=3*L.BLOCK_LENGTH,W=1,z=n.browser?1/0:2,V=[1e3,5e3,15e3],G=e("../package.json").version,K=`WebTorrent/${G} (https://webtorrent.io)`;let Y;try{Y=I.join(b.statSync("/tmp")&&"/tmp","webtorrent")}catch(e){Y=I.join("function"==typeof x.tmpdir?x.tmpdir():"/","webtorrent")}class X extends _{constructor(e,t,n){super(),this._debugId="unknown infohash",this.client=t,this.announce=n.announce,this.urlList=n.urlList,this.path=n.path,this.skipVerify=!!n.skipVerify,this._store=n.store||i,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=A(),this._uploadSpeed=A(),this._servers=[],this._xsRequests=[],this._fileModtimes=n.fileModtimes,null!==e&&this._onTorrentId(e),this._debug("new torrent")}get timeRemaining(){return this.done?0:0===this.downloadSpeed?1/0:1e3*((this.length-this.downloaded)/this.downloadSpeed)}get downloaded(){if(!this.bitfield)return 0;let e=0;for(let t=0,n=this.pieces.length;t<n;++t)if(this.bitfield.get(t))e+=t===n-1?this.lastPieceLength:this.pieceLength;else{const n=this.pieces[t];e+=n.length-n.missing}return e}get downloadSpeed(){return this._downloadSpeed()}get uploadSpeed(){return this._uploadSpeed()}get progress(){return this.length?this.downloaded/this.length:0}get ratio(){return this.uploaded/(this.received||1)}get numPeers(){return this.wires.length}get torrentFileBlobURL(){if("undefined"==typeof window)throw new Error("browser-only property");return this.torrentFile?URL.createObjectURL(new Blob([this.torrentFile],{type:"application/x-bittorrent"})):null}get _numQueued(){return this._queue.length+(this._peersLength-this._numConns)}get _numConns(){let e=0;for(const t in this._peers)this._peers[t].connected&&(e+=1);return e}get swarm(){return console.warn("WebTorrent: `torrent.swarm` is deprecated. Use `torrent` directly instead."),this}_onTorrentId(e){if(this.destroyed)return;let t;try{t=C(e)}catch(e){}t?(this.infoHash=t.infoHash,this._debugId=t.infoHash.toString("hex").substring(0,7),n.nextTick(()=>{this.destroyed||this._onParsedTorrent(t)})):C.remote(e,(e,t)=>this.destroyed?void 0:e?this._destroy(e):void this._onParsedTorrent(t))}_onParsedTorrent(e){if(!this.destroyed){if(this._processParsedTorrent(e),!this.infoHash)return this._destroy(new Error("Malformed torrent data: No info hash"));(this.path||(this.path=I.join(Y,this.infoHash)),this._rechokeIntervalId=setInterval(()=>{this._rechoke()},1e4),this._rechokeIntervalId.unref&&this._rechokeIntervalId.unref(),this.emit("_infoHash",this.infoHash),!this.destroyed)&&(this.emit("infoHash",this.infoHash),this.destroyed||(this.client.listening?this._onListening():this.client.once("listening",()=>{this._onListening()})))}}_processParsedTorrent(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)),U(e.announce),U(e.urlList),Object.assign(this,e),this.magnetURI=C.toMagnetURI(e),this.torrentFile=C.toTorrentFile(e)}_onListening(){this.destroyed||(this.info?this._onMetadata(this):(this.xs&&this._getMetadataFromServer(),this._startDiscovery()))}_startDiscovery(){if(this.discovery||this.destroyed)return;let e=this.client.tracker;e&&(e=Object.assign({},this.client.tracker,{getAnnounceOpts:()=>{const e={uploaded:this.uploaded,downloaded:this.downloaded,left:d(this.length-this.downloaded,0)};return this.client.tracker.getAnnounceOpts&&Object.assign(e,this.client.tracker.getAnnounceOpts()),this._getAnnounceOpts&&Object.assign(e,this._getAnnounceOpts()),e}})),this.discovery=new g({infoHash:this.infoHash,announce:this.announce,peerId:this.client.peerId,dht:!this.private&&this.client.dht,tracker:e,port:this.client.torrentPort,userAgent:K}),this.discovery.on("error",e=>{this._destroy(e)}),this.discovery.on("peer",e=>{"string"==typeof e&&this.done||this.addPeer(e)}),this.discovery.on("trackerAnnounce",()=>{this.emit("trackerAnnounce"),0===this.numPeers&&this.emit("noPeers","tracker")}),this.discovery.on("dhtAnnounce",()=>{this.emit("dhtAnnounce"),0===this.numPeers&&this.emit("noPeers","dht")}),this.discovery.on("warning",e=>{this.emit("warning",e)})}_getMetadataFromServer(){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);let a;try{a=C(i)}catch(e){}return a?a.infoHash===t.infoHash?void(t._onMetadata(a),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);let o;try{o=y.concat({url:e,method:"GET",headers:{"user-agent":K}},r)}catch(r){return t.emit("warning",new Error(`skipping invalid url xs param: ${e}`)),n(null)}t._xsRequests.push(o)}const t=this,n=Array.isArray(this.xs)?this.xs:[this.xs],r=n.map(t=>n=>{e(t,n)});v(r)}_onMetadata(e){if(this.metadata||this.destroyed)return;this._debug("got metadata"),this._xsRequests.forEach(e=>{e.abort()}),this._xsRequests=[];let t;if(e&&e.infoHash)t=e;else try{t=C(e)}catch(e){return this._destroy(e)}if(this._processParsedTorrent(t),this.metadata=this.torrentFile,this.client.enableWebSeeds&&this.urlList.forEach(e=>{this.addWebSeed(e)}),this._rarityMap=new q(this),this.store=new w(new this._store(this.pieceLength,{torrent:{infoHash:this.infoHash},files:this.files.map(e=>({path:I.join(this.path,e.path),length:e.length,offset:e.offset})),length:this.length,name:this.infoHash})),this.files=this.files.map(e=>new M(this,e)),this.so){const e=N.parse(this.so);this.files.forEach((t,n)=>{e.includes(n)&&this.files[n].select(!0)})}else 0!==this.pieces.length&&this.select(0,this.pieces.length-1,!1);if(this._hashes=this.pieces,this.pieces=this.pieces.map((e,t)=>{const n=t===this.pieces.length-1?this.lastPieceLength:this.pieceLength;return new L(n)}),this._reservations=this.pieces.map(()=>[]),this.bitfield=new p(this.pieces.length),this.wires.forEach(e=>{e.ut_metadata&&e.ut_metadata.setMetadata(this.metadata),this._onWireWithMetadata(e)}),this.emit("metadata"),!this.destroyed)if(this.skipVerify)this._markAllVerified(),this._onStore();else{const e=e=>e?this._destroy(e):void(this._debug("done verifying"),this._onStore());this._debug("verifying existing torrent data"),this._fileModtimes&&this._store===i?this.getFileModtimes((t,n)=>{if(t)return this._destroy(t);const r=this.files.map((e,t)=>n[t]===this._fileModtimes[t]).every(e=>e);r?(this._markAllVerified(),this._onStore()):this._verifyPieces(e)}):this._verifyPieces(e)}}getFileModtimes(e){const t=[];S(this.files.map((e,n)=>r=>{b.stat(I.join(this.path,e.path),(e,o)=>e&&"ENOENT"!==e.code?r(e):void(t[n]=o&&o.mtime.getTime(),r(null)))}),z,n=>{this._debug("done getting file modtimes"),e(n,t)})}_verifyPieces(e){S(this.pieces.map((e,t)=>e=>this.destroyed?e(new Error("torrent is destroyed")):void this.store.get(t,(r,o)=>this.destroyed?e(new Error("torrent is destroyed")):r?n.nextTick(e,null):void R(o,n=>{if(this.destroyed)return e(new Error("torrent is destroyed"));if(n===this._hashes[t]){if(!this.pieces[t])return e(null);this._debug("piece verified %s",t),this._markVerified(t)}else this._debug("piece invalid %s",t);e(null)}))),z,e)}rescanFiles(e){if(this.destroyed)throw new Error("torrent is destroyed");e||(e=u),this._verifyPieces(t=>t?(this._destroy(t),e(t)):void(this._checkDone(),e(null)))}_markAllVerified(){for(let e=0;e<this.pieces.length;e++)this._markVerified(e)}_markVerified(e){this.pieces[e]=null,this._reservations[e]=null,this.bitfield.set(e,!0)}_onStore(){this.destroyed||(this._debug("on store"),this._startDiscovery(),this.ready=!0,this.emit("ready"),this._checkDone(),this._updateSelections())}destroy(e){this._destroy(null,e)}_destroy(e,t){if(!this.destroyed){for(const e in this.destroyed=!0,this._debug("destroy"),this.client._remove(this),clearInterval(this._rechokeIntervalId),this._xsRequests.forEach(e=>{e.abort()}),this._rarityMap&&this._rarityMap.destroy(),this._peers)this.removePeer(e);this.files.forEach(e=>{e instanceof M&&e._destroy()});const n=this._servers.map(e=>t=>{e.destroy(t)});this.discovery&&n.push(e=>{this.discovery.destroy(e)}),this.store&&n.push(e=>{this.store.close(e)}),v(n,t),e&&(0===this.listenerCount("error")?this.client.emit("error",e):this.emit("error",e)),this.emit("close"),this.client=null,this.files=[],this.discovery=null,this.store=null,this._rarityMap=null,this._peers=null,this._servers=null,this._xsRequests=null}}addPeer(t){if(this.destroyed)throw new Error("torrent is destroyed");if(!this.infoHash)throw new Error("addPeer() must not be called before the `infoHash` event");if(this.client.blocked){let e;if("string"==typeof t){let n;try{n=f(t)}catch(n){return this._debug("ignoring peer: invalid %s",t),this.emit("invalidPeer",t),!1}e=n[0]}else"string"==typeof t.remoteAddress&&(e=t.remoteAddress);if(e&&this.client.blocked.contains(e))return this._debug("ignoring peer: blocked %s",t),"string"!=typeof t&&t.destroy(),this.emit("blockedPeer",t),!1}const n=!!this._addPeer(t);return n?this.emit("peer",t):this.emit("invalidPeer",t),n}_addPeer(e){if(this.destroyed)return"string"!=typeof e&&e.destroy(),null;if("string"==typeof e&&!this._validAddr(e))return this._debug("ignoring peer: invalid %s",e),null;const t=e&&e.id||e;if(this._peers[t])return this._debug("ignoring peer: duplicate (%s)",t),"string"!=typeof e&&e.destroy(),null;if(this.paused)return this._debug("ignoring peer: torrent is paused"),"string"!=typeof e&&e.destroy(),null;this._debug("add peer %s",t);let n;return n="string"==typeof e?H.createTCPOutgoingPeer(e,this):H.createWebRTCPeer(e,this),this._peers[n.id]=n,this._peersLength+=1,"string"==typeof e&&(this._queue.push(n),this._drain()),n}addWebSeed(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);const t=H.createWebSeedPeer(e,this);this._peers[t.id]=t,this._peersLength+=1,this.emit("peer",e)}_addIncomingPeer(e){return this.destroyed?e.destroy(new Error("torrent is destroyed")):this.paused?e.destroy(new Error("torrent is paused")):void(this._debug("add incoming peer %s",e.id),this._peers[e.id]=e,this._peersLength+=1)}removePeer(e){const t=e&&e.id||e;e=this._peers[t];e&&(this._debug("removePeer %s",t),delete this._peers[t],this._peersLength-=1,e.destroy(),this._drain())}select(e,t,n,r){if(this.destroyed)throw new Error("torrent is destroyed");if(0>e||t<e||this.pieces.length<=t)throw new Error(`invalid selection ${e} : ${t}`);n=+n||0,this._debug("select %s-%s (priority %s)",e,t,n),this._selections.push({from:e,to:t,offset:0,priority:n,notify:r||u}),this._selections.sort((e,t)=>t.priority-e.priority),this._updateSelections()}deselect(e,t,n){if(this.destroyed)throw new Error("torrent is destroyed");n=+n||0,this._debug("deselect %s-%s (priority %s)",e,t,n);for(let r=0;r<this._selections.length;++r){const o=this._selections[r];if(o.from===e&&o.to===t&&o.priority===n){this._selections.splice(r,1);break}}this._updateSelections()}critical(e,t){if(this.destroyed)throw new Error("torrent is destroyed");this._debug("critical %s-%s",e,t);for(let n=e;n<=t;++n)this._critical[n]=!0;this._updateSelections()}_onWire(e,t){if(this._debug("got wire %s (%s)",e._debugId,t||"Unknown"),e.on("download",e=>{this.destroyed||(this.received+=e,this._downloadSpeed(e),this.client._downloadSpeed(e),this.emit("download",e),this.client.emit("download",e))}),e.on("upload",e=>{this.destroyed||(this.uploaded+=e,this._uploadSpeed(e),this.client._uploadSpeed(e),this.emit("upload",e),this.client.emit("upload",e))}),this.wires.push(e),t){const n=f(t);e.remoteAddress=n[0],e.remotePort=n[1]}this.client.dht&&this.client.dht.listening&&e.on("port",n=>this.destroyed||this.client.dht.destroyed?void 0:e.remoteAddress?0===n||65536<n?this._debug("ignoring invalid PORT from peer"):void(this._debug("port: %s (from %s)",n,t),this.client.dht.addNode({host:e.remoteAddress,port:n})):this._debug("ignoring PORT from peer with no address")),e.on("timeout",()=>{this._debug("wire timeout (%s)",t),e.destroy()}),e.setTimeout(3e4,!0),e.setKeepAlive(!0),e.use(P(this.metadata)),e.ut_metadata.on("warning",e=>{this._debug("ut_metadata warning: %s",e.message)}),this.metadata||(e.ut_metadata.on("metadata",e=>{this._debug("got metadata via ut_metadata"),this._onMetadata(e)}),e.ut_metadata.fetch()),"function"!=typeof O||this.private||(e.use(O()),e.ut_pex.on("peer",e=>{this.done||(this._debug("ut_pex: got peer: %s (from %s)",e,t),this.addPeer(e))}),e.ut_pex.on("dropped",e=>{const n=this._peers[e];n&&!n.connected&&(this._debug("ut_pex: dropped peer: %s (from %s)",e,t),this.removePeer(e))}),e.once("close",()=>{e.ut_pex.reset()})),this.emit("wire",e,t),this.metadata&&n.nextTick(()=>{this._onWireWithMetadata(e)})}_onWireWithMetadata(e){let t=null;const n=()=>{this.destroyed||e.destroyed||(this._numQueued>2*(this._numConns-this.numPeers)&&e.amInterested?e.destroy():(t=setTimeout(n,j),t.unref&&t.unref()))};let r;const o=()=>{if(e.peerPieces.buffer.length===this.bitfield.buffer.length){for(r=0;r<this.pieces.length;++r)if(!e.peerPieces.get(r))return;e.isSeeder=!0,e.choke()}};e.on("bitfield",()=>{o(),this._update()}),e.on("have",()=>{o(),this._update()}),e.once("interested",()=>{e.unchoke()}),e.once("close",()=>{clearTimeout(t)}),e.on("choke",()=>{clearTimeout(t),t=setTimeout(n,j),t.unref&&t.unref()}),e.on("unchoke",()=>{clearTimeout(t),this._update()}),e.on("request",(t,n,r,o)=>r>131072?e.destroy():void(this.pieces[t]||this.store.get(t,{offset:n,length:r},o))),e.bitfield(this.bitfield),e.uninterested(),e.peerExtensions.dht&&this.client.dht&&this.client.dht.listening&&e.port(this.client.dht.address().port),"webSeed"!==e.type&&(t=setTimeout(n,j),t.unref&&t.unref()),e.isSeeder=!1,o()}_updateSelections(){!this.ready||this.destroyed||(n.nextTick(()=>{this._gcSelections()}),this._updateInterest(),this._update())}_gcSelections(){for(let e=0;e<this._selections.length;++e){const t=this._selections[e],n=t.offset;for(;this.bitfield.get(t.from+t.offset)&&t.from+t.offset<t.to;)t.offset+=1;n!==t.offset&&t.notify(),t.to===t.from+t.offset&&this.bitfield.get(t.from+t.offset)&&(this._selections.splice(e,1),e-=1,t.notify(),this._updateInterest())}this._selections.length||this.emit("idle")}_updateInterest(){const e=this._amInterested;this._amInterested=!!this._selections.length,this.wires.forEach(e=>{let t=!1;for(let n=0;n<this.pieces.length;++n)if(this.pieces[n]&&e.peerPieces.get(n)){t=!0;break}t?e.interested():e.uninterested()});e===this._amInterested||(this._amInterested?this.emit("interested"):this.emit("uninterested"))}_update(){if(!this.destroyed){const e=B(this.wires);for(let t;t=e();)this._updateWireWrapper(t)}}_updateWireWrapper(e){const t=this;"undefined"!=typeof window&&"function"==typeof window.requestIdleCallback?window.requestIdleCallback(function(){t._updateWire(e)},{timeout:250}):t._updateWire(e)}_updateWire(e){function t(t,n,r,o){return a=>a>=t&&a<=n&&!(a in r)&&e.peerPieces.get(a)&&(!o||o(a))}function n(){const t=e.downloadSpeed()||1;if(t>F)return()=>!0;const n=d(1,e.requests.length)*L.BLOCK_LENGTH/t;let r=10,o=0;return e=>{if(!r||a.bitfield.get(e))return!0;for(let i=a.pieces[e].missing;o<a.wires.length;o++){const d=a.wires[o],s=d.downloadSpeed();if(!(s<F)&&!(s<=t)&&d.peerPieces.get(e)&&!(0<(i-=s*n)))return r--,!1}return!0}}function r(e){let t=e;for(let n=e;n<a._selections.length&&a._selections[n].priority;n++)t=n;const n=a._selections[e];a._selections[e]=a._selections[t],a._selections[t]=n}function i(o){if(e.requests.length>=l)return!0;const d=n();for(let n=0;n<a._selections.length;n++){const i=a._selections[n];let s;if("rarest"===a.strategy){const c=i.from+i.offset,u=i.to,f={};let p=0;for(const h=t(c,u,f,d);p<u-c+1&&(s=a._rarityMap.getRarestPiece(h),!(0>s));){for(;a._request(e,s,a._critical[s]||o););if(e.requests.length<l){f[s]=!0,p++;continue}return i.priority&&r(n),!0}}else for(s=i.from+i.offset;s<=i.to;s++)if(e.peerPieces.get(s)&&d(s)){for(;a._request(e,s,a._critical[s]||o););if(!(e.requests.length<l))return i.priority&&r(n),!0}}return!1}const a=this;if(e.peerChoking)return;if(!e.downloaded)return function(){if(!e.requests.length)for(let n=a._selections.length;n--;){const r=a._selections[n];let o;if("rarest"===a.strategy){const n=r.from+r.offset,i=r.to,d={};let s=0;for(const r=t(n,i,d);s<i-n+1&&(o=a._rarityMap.getRarestPiece(r),!(0>o));){if(a._request(e,o,!1))return;d[o]=!0,s+=1}}else for(o=r.to;o>=r.from+r.offset;--o)if(e.peerPieces.get(o)&&a._request(e,o,!1))return}}();const s=o(e,.5);if(e.requests.length>=s)return;const l=o(e,W);i(!1)||i(!0)}_rechoke(){if(!this.ready)return;0<this._rechokeOptimisticTime?this._rechokeOptimisticTime-=1:this._rechokeOptimisticWire=null;const e=[];this.wires.forEach(t=>{t.isSeeder||t===this._rechokeOptimisticWire||e.push({wire:t,downloadSpeed:t.downloadSpeed(),uploadSpeed:t.uploadSpeed(),salt:Math.random(),isChoked:!0})}),e.sort(function(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});let t=0,n=0;for(;n<e.length&&t<this._rechokeNumSlots;++n)e[n].isChoked=!1,e[n].wire.peerInterested&&(t+=1);if(!this._rechokeOptimisticWire&&n<e.length&&this._rechokeNumSlots){const t=e.slice(n).filter(e=>e.wire.peerInterested),r=t[c(t.length)];r&&(r.isChoked=!1,this._rechokeOptimisticWire=r.wire,this._rechokeOptimisticTime=2)}e.forEach(e=>{e.wire.amChoking!==e.isChoked&&(e.isChoked?e.wire.choke():e.wire.unchoke())})}_hotswap(e,t){const n=e.downloadSpeed();if(n<L.BLOCK_LENGTH)return!1;if(!this._reservations[t])return!1;const o=this._reservations[t];if(!o)return!1;let r=1/0,a,d;for(d=0;d<o.length;d++){const t=o[d];if(!t||t===e)continue;const i=t.downloadSpeed();i>=F||2*i>n||i>r||(a=t,r=i)}if(!a)return!1;for(d=0;d<o.length;d++)o[d]===a&&(o[d]=null);for(d=0;d<a.requests.length;d++){const e=a.requests[d];e.piece===t&&this.pieces[t].cancel(0|e.offset/L.BLOCK_LENGTH)}return this.emit("hotswap",a,e,t),!0}_request(e,t,a){function d(){n.nextTick(()=>{c._update()})}const c=this,u=e.requests.length,f="webSeed"===e.type;if(c.bitfield.get(t))return!1;const p=f?s(l(e,W,c.pieceLength),c.maxWebConns):o(e,W);if(u>=p)return!1;const h=c.pieces[t];let m=f?h.reserveRemaining():h.reserve();if(-1===m&&a&&c._hotswap(e,t)&&(m=f?h.reserveRemaining():h.reserve()),-1===m)return!1;let g=c._reservations[t];g||(g=c._reservations[t]=[]);let _=g.indexOf(null);-1===_&&(_=g.length),g[_]=e;const b=h.chunkOffset(m),y=f?h.chunkLengthRemaining(m):h.chunkLength(m);return e.request(t,b,y,function n(r,o){if(c.destroyed)return;if(!c.ready)return c.once("ready",()=>{n(r,o)});if(g[_]===e&&(g[_]=null),h!==c.pieces[t])return d();if(r)return c._debug("error getting piece %s (offset: %s length: %s) from %s: %s",t,b,y,`${e.remoteAddress}:${e.remotePort}`,r.message),f?h.cancelRemaining(m):h.cancel(m),void d();if(c._debug("got piece %s (offset: %s length: %s) from %s",t,b,y,`${e.remoteAddress}:${e.remotePort}`),!h.set(m,o,e))return d();const i=h.flush();R(i,e=>{if(!c.destroyed){if(e===c._hashes[t]){if(!c.pieces[t])return;c._debug("piece verified %s",t),c.pieces[t]=null,c._reservations[t]=null,c.bitfield.set(t,!0),c.store.put(t,i),c.wires.forEach(e=>{e.have(t)}),c._checkDone()&&!c.destroyed&&c.discovery.complete()}else c.pieces[t]=new L(h.length),c.emit("warning",new Error(`Piece ${t} failed verification`));d()}})}),!0}_checkDone(){if(this.destroyed)return;this.files.forEach(e=>{if(!e.done){for(let t=e._startPiece;t<=e._endPiece;++t)if(!this.bitfield.get(t))return;e.done=!0,e.emit("done"),this._debug(`file done: ${e.name}`)}});let e=!0;for(let t=0;t<this._selections.length;t++){const n=this._selections[t];for(let t=n.from;t<=n.to;t++)if(!this.bitfield.get(t)){e=!1;break}if(!e)break}return!this.done&&e&&(this.done=!0,this._debug(`torrent done: ${this.infoHash}`),this.emit("done")),this._gcSelections(),e}load(e,t){if(this.destroyed)throw new Error("torrent is destroyed");if(!this.ready)return this.once("ready",()=>{this.load(e,t)});Array.isArray(e)||(e=[e]),t||(t=u);const n=new k(e),r=new h(this.store,this.pieceLength);T(n,r,e=>e?t(e):void(this._markAllVerified(),this._checkDone(),t(null)))}createServer(e){if("function"!=typeof D)throw new Error("node.js-only method");if(this.destroyed)throw new Error("torrent is destroyed");const t=new D(this,e);return this._servers.push(t),t}pause(){this.destroyed||(this._debug("pause"),this.paused=!0)}resume(){this.destroyed||(this._debug("resume"),this.paused=!1,this._drain())}_debug(){const e=[].slice.call(arguments);e[0]=`[${this.client._debugId}] [${this._debugId}] ${e[0]}`,m(...e)}_drain(){if(this._debug("_drain numConns %s maxConns %s",this._numConns,this.client.maxConns),"function"!=typeof E.connect||this.destroyed||this.paused||this._numConns>=this.client.maxConns)return;this._debug("drain (%s queued, %s/%s peers)",this._numQueued,this.numPeers,this.client.maxConns);const e=this._queue.shift();if(!e)return;this._debug("tcp connect attempt to %s",e.addr);const t=f(e.addr),n={host:t[0],port:t[1]},r=e.conn=E.connect(n);r.once("connect",()=>{e.onConnect()}),r.once("error",t=>{e.destroy(t)}),e.startConnectTimeout(),r.on("close",()=>{if(!this.destroyed){if(e.retries>=V.length)return void this._debug("conn %s closed: will not re-add (max %s attempts)",e.addr,V.length);const t=V[e.retries];this._debug("conn %s closed: will re-add to queue in %sms (attempt %s)",e.addr,t,e.retries+1);const n=setTimeout(()=>{const t=this._addPeer(e.addr);t&&(t.retries=e.retries+1)},t);n.unref&&n.unref()}})}_validAddr(e){let t;try{t=f(e)}catch(t){return!1}const n=t[0],r=t[1];return 0<r&&65535>r&&("127.0.0.1"!==n||r!==this.client.torrentPort)}}t.exports=X}).call(this,e("_process"),"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global)},{"../package.json":124,"./file":2,"./peer":3,"./rarity-map":4,"./server":21,_process:61,"addr-to-ip-port":7,bitfield:13,"chunk-store-stream/write":28,debug:30,events:33,fs:22,"fs-chunk-store":46,"immediate-chunk-store":38,multistream:54,net:21,os:21,"parse-numeric-range":57,"parse-torrent":58,path:59,pump:62,"random-iterate":68,"run-parallel":89,"run-parallel-limit":88,"simple-get":93,"simple-sha1":95,speedometer:98,"torrent-discovery":110,"torrent-piece":111,uniq:114,ut_metadata:118,ut_pex:21}],6:[function(e,t){(function(n){const r=e("bitfield"),o=e("debug")("webtorrent:webconn"),i=e("simple-get"),a=e("simple-sha1"),l=e("bittorrent-protocol"),c=e("../package.json").version;t.exports=class extends l{constructor(e,t){super(),this.url=e,this.webPeerId=a.sync(e),this._torrent=t,this._init()}_init(){this.setKeepAlive(!0),this.once("handshake",e=>{if(this.destroyed)return;this.handshake(e,this.webPeerId);const t=this._torrent.pieces.length,n=new r(t);for(let r=0;r<=t;r++)n.set(r,!0);this.bitfield(n)}),this.once("interested",()=>{o("interested"),this.unchoke()}),this.on("uninterested",()=>{o("uninterested")}),this.on("choke",()=>{o("choke")}),this.on("unchoke",()=>{o("unchoke")}),this.on("bitfield",()=>{o("bitfield")}),this.on("request",(e,t,n,r)=>{o("request pieceIndex=%d offset=%d length=%d",e,t,n),this.httpRequest(e,t,n,r)})}httpRequest(e,t,r,a){const l=e*this._torrent.pieceLength,u=l+t,f=u+r-1,p=this._torrent.files;let h;if(1>=p.length)h=[{url:this.url,start:u,end:f}];else{const e=p.filter(e=>e.offset<=f&&e.offset+e.length>u);if(1>e.length)return a(new Error("Could not find file corresponnding to web seed range request"));h=e.map(e=>{const t=e.offset+e.length-1,n=this.url+("/"===this.url[this.url.length-1]?"":"/")+e.path;return{url:n,fileOffsetInRange:d(e.offset-u,0),start:d(u-e.offset,0),end:s(t,f-e.offset)}})}let m=0,g=!1,_;1<h.length&&(_=n.alloc(r)),h.forEach(n=>{function d(e,t){return 200>e.statusCode||300<=e.statusCode?(g=!0,a(new Error(`Unexpected HTTP status code ${e.statusCode}`))):void(o("Got data of length %d",t.length),1===h.length?a(null,t):(t.copy(_,n.fileOffsetInRange),++m===h.length&&a(null,_)))}const s=n.url,l=n.start,u=n.end;o("Requesting url=%s pieceIndex=%d offset=%d length=%d start=%d end=%d",s,e,t,r,l,u);const f={url:s,method:"GET",headers:{"user-agent":`WebTorrent/${c} (https://webtorrent.io)`,range:`bytes=${l}-${u}`}};i.concat(f,(e,t,n)=>g?void 0:e?"undefined"==typeof window||s.startsWith(`${window.location.origin}/`)?(g=!0,a(e)):i.head(s,(t,n)=>g?void 0:t?(g=!0,a(t)):200>n.statusCode||300<=n.statusCode?(g=!0,a(new Error(`Unexpected HTTP status code 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protocol"),u=n.from([0,0,0,0]),f=n.from([0,0,0,1,0]),p=n.from([0,0,0,1,1]),h=n.from([0,0,0,1,2]),m=n.from([0,0,0,1,3]),g=[0,0,0,0,0,0,0,0],_=[0,0,0,3,9,0,0];class b{constructor(e,t,n,r){this.piece=e,this.offset=t,this.length=n,this.callback=r}}class y extends l.Duplex{constructor(){super(),this._debugId=d(4).toString("hex"),this._debug("new wire"),this.peerId=null,this.peerIdBuffer=null,this.type=null,this.amChoking=!0,this.amInterested=!1,this.peerChoking=!0,this.peerInterested=!1,this.peerPieces=new i(0,{grow:4e5}),this.peerExtensions={},this.requests=[],this.peerRequests=[],this.extendedMapping={},this.peerExtendedMapping={},this.extendedHandshake={},this.peerExtendedHandshake={},this._ext={},this._nextExt=1,this.uploaded=0,this.downloaded=0,this.uploadSpeed=s(),this.downloadSpeed=s(),this._keepAliveInterval=null,this._timeout=null,this._timeoutMs=0,this.destroyed=!1,this._finished=!1,this._parserSize=0,this._parser=null,this._buffer=[],this._bufferSize=0,this.once("finish",()=>this._onFinish()),this._parseHandshake()}setKeepAlive(e){this._debug("setKeepAlive %s",e),clearInterval(this._keepAliveInterval);!1===e||(this._keepAliveInterval=setInterval(()=>{this.keepAlive()},55e3))}setTimeout(e,t){this._debug("setTimeout ms=%d unref=%s",e,t),this._clearTimeout(),this._timeoutMs=e,this._timeoutUnref=!!t,this._updateTimeout()}destroy(){this.destroyed||(this.destroyed=!0,this._debug("destroy"),this.emit("close"),this.end())}end(...e){this._debug("end"),this._onUninterested(),this._onChoke(),super.end(...e)}use(e){function t(){}const 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);const 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}keepAlive(){this._debug("keep-alive"),this._push(u)}handshake(e,t,r){let o,i;if("string"==typeof e?(e=e.toLowerCase(),o=n.from(e,"hex")):(o=e,e=o.toString("hex")),"string"==typeof t?i=n.from(t,"hex"):(i=t,t=i.toString("hex")),20!==o.length||20!==i.length)throw new Error("infoHash and peerId MUST have length 20");this._debug("handshake i=%s p=%s exts=%o",e,t,r);const a=n.from(g);a[5]|=16,r&&r.dht&&(a[7]|=1),this._push(n.concat([c,a,o,i])),this._handshakeSent=!0,this.peerExtensions.extended&&!this._extendedHandshakeSent&&this._sendExtendedHandshake()}_sendExtendedHandshake(){const e=Object.assign({},this.extendedHandshake);for(const t in e.m={},this.extendedMapping){const n=this.extendedMapping[t];e.m[n]=+t}this.extended(0,o.encode(e)),this._extendedHandshakeSent=!0}choke(){if(!this.amChoking){for(this.amChoking=!0,this._debug("choke");this.peerRequests.length;)this.peerRequests.pop();this._push(f)}}unchoke(){this.amChoking&&(this.amChoking=!1,this._debug("unchoke"),this._push(p))}interested(){this.amInterested||(this.amInterested=!0,this._debug("interested"),this._push(h))}uninterested(){this.amInterested&&(this.amInterested=!1,this._debug("uninterested"),this._push(m))}have(e){this._debug("have %d",e),this._message(4,[e],null)}bitfield(e){this._debug("bitfield"),n.isBuffer(e)||(e=e.buffer),this._message(5,[],e)}request(e,t,n,r){return r||(r=()=>{}),this._finished?r(new Error("wire is closed")):this.peerChoking?r(new Error("peer is choking")):void(this._debug("request index=%d offset=%d length=%d",e,t,n),this.requests.push(new b(e,t,n,r)),this._updateTimeout(),this._message(6,[e,t,n],null))}piece(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)}cancel(e,t,n){this._debug("cancel index=%d offset=%d length=%d",e,t,n),this._callback(this._pull(this.requests,e,t,n),new Error("request was cancelled"),null),this._message(8,[e,t,n],null)}port(e){this._debug("port %d",e);const t=n.from(_);t.writeUInt16BE(e,5),this._push(t)}extended(e,t){if(this._debug("extended ext=%s",e),"string"==typeof e&&this.peerExtendedMapping[e]&&(e=this.peerExtendedMapping[e]),"number"==typeof e){const r=n.from([e]),i=n.isBuffer(t)?t:o.encode(t);this._message(20,[],n.concat([r,i]))}else throw new Error(`Unrecognized extension: ${e}`)}_read(){}_message(e,t,r){const o=r?r.length:0,a=n.allocUnsafe(5+4*t.length);a.writeUInt32BE(a.length+o-4,0),a[4]=e;for(let n=0;n<t.length;n++)a.writeUInt32BE(t[n],5+4*n);this._push(a),r&&this._push(r)}_push(e){return this._finished?void 0:this.push(e)}_onKeepAlive(){this._debug("got keep-alive"),this.emit("keep-alive")}_onHandshake(e,t,n){const 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()}_onChoke(){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)}_onUnchoke(){this.peerChoking=!1,this._debug("got unchoke"),this.emit("unchoke")}_onInterested(){this.peerInterested=!0,this._debug("got interested"),this.emit("interested")}_onUninterested(){this.peerInterested=!1,this._debug("got uninterested"),this.emit("uninterested")}_onHave(e){this.peerPieces.get(e)||(this._debug("got have %d",e),this.peerPieces.set(e,!0),this.emit("have",e))}_onBitField(e){this.peerPieces=new i(e),this._debug("got bitfield"),this.emit("bitfield",this.peerPieces)}_onRequest(e,t,n){if(!this.amChoking){this._debug("got request index=%d offset=%d length=%d",e,t,n);const o=(o,i)=>r===this._pull(this.peerRequests,e,t,n)?o?this._debug("error satisfying request index=%d offset=%d length=%d (%s)",e,t,n,o.message):void this.piece(e,t,i):void 0;var r=new b(e,t,n,o);this.peerRequests.push(r),this.emit("request",e,t,n,o)}}_onPiece(e,t,n){this._debug("got piece index=%d offset=%d",e,t),this._callback(this._pull(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)}_onCancel(e,t,n){this._debug("got cancel index=%d offset=%d length=%d",e,t,n),this._pull(this.peerRequests,e,t,n),this.emit("cancel",e,t,n)}_onPort(e){this._debug("got port %d",e),this.emit("port",e)}_onExtended(e,t){if(0===e){let e;try{e=o.decode(t)}catch(e){this._debug("ignoring invalid extended handshake: %s",e.message||e)}if(!e)return;this.peerExtendedHandshake=e;if("object"==typeof e.m)for(var n in e.m)this.peerExtendedMapping[n]=+e.m[n].toString();for(n in this._ext)this.peerExtendedMapping[n]&&this._ext[n].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)}_onTimeout(){this._debug("request timed out"),this._callback(this.requests.shift(),new Error("request has timed out"),null),this.emit("timeout")}_write(e,t,r){for(this._bufferSize+=e.length,this._buffer.push(e);this._bufferSize>=this._parserSize;){const e=1===this._buffer.length?this._buffer[0]:n.concat(this._buffer);this._bufferSize-=this._parserSize,this._buffer=this._bufferSize?[e.slice(this._parserSize)]:[],this._parser(e.slice(0,this._parserSize))}r(null)}_callback(e,t,n){e&&(this._clearTimeout(),!this.peerChoking&&!this._finished&&this._updateTimeout(),e.callback(t,n))}_clearTimeout(){this._timeout&&(clearTimeout(this._timeout),this._timeout=null)}_updateTimeout(){this._timeoutMs&&this.requests.length&&!this._timeout&&(this._timeout=setTimeout(()=>this._onTimeout(),this._timeoutMs),this._timeoutUnref&&this._timeout.unref&&this._timeout.unref())}_parse(e,t){this._parserSize=e,this._parser=t}_onMessageLength(e){const t=e.readUInt32BE(0);0<t?this._parse(t,this._onMessage):(this._onKeepAlive(),this._parse(4,this._onMessageLength))}_onMessage(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);}}_parseHandshake(){this._parse(1,e=>{const t=e.readUInt8(0);this._parse(t+48,e=>{const n=e.slice(0,t);return"BitTorrent protocol"===n.toString()?void(e=e.slice(t),this._onHandshake(e.slice(8,28),e.slice(28,48),{dht:!!(1&e[7]),extended:!!(16&e[5])}),this._parse(4,this._onMessageLength)):(this._debug("Error: wire not speaking BitTorrent protocol (%s)",n.toString()),void this.end())})})}_onFinish(){for(this._finished=!0,this.push(null);this.read(););for(clearInterval(this._keepAliveInterval),this._parse(Number.MAX_VALUE,()=>{});this.peerRequests.length;)this.peerRequests.pop();for(;this.requests.length;)this._callback(this.requests.pop(),new Error("wire was closed"),null)}_debug(...e){e[0]=`[${this._debugId}] ${e[0]}`,a(...e)}_pull(e,t,n,o){for(let a=0;a<e.length;a++){const i=e[a];if(i.piece===t&&i.offset===n&&i.length===o)return r(e,a),i}return null}}t.exports=y}).call(this,e("buffer").Buffer)},{bencode:11,bitfield:13,buffer:26,debug:30,randombytes:69,"readable-stream":85,speedometer:98,"unordered-array-remove":115}],15:[function(e,t){(function(n,r){const o=e("debug")("bittorrent-tracker:client"),i=e("events"),a=e("once"),d=e("run-parallel"),s=e("simple-peer"),l=e("uniq"),c=e("./lib/common"),u=e("./lib/client/http-tracker"),f=e("./lib/client/udp-tracker"),p=e("./lib/client/websocket-tracker");class h extends i{constructor(e={}){if(super(),!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");this.peerId="string"==typeof e.peerId?e.peerId:e.peerId.toString("hex"),this._peerIdBuffer=r.from(this.peerId,"hex"),this._peerIdBinary=this._peerIdBuffer.toString("binary"),this.infoHash="string"==typeof e.infoHash?e.infoHash.toLowerCase():e.infoHash.toString("hex"),this._infoHashBuffer=r.from(this.infoHash,"hex"),this._infoHashBinary=this._infoHashBuffer.toString("binary"),o("new client %s",this.infoHash),this.destroyed=!1,this._port=e.port,this._getAnnounceOpts=e.getAnnounceOpts,this._rtcConfig=e.rtcConfig,this._userAgent=e.userAgent,this._wrtc="function"==typeof e.wrtc?e.wrtc():e.wrtc;let t="string"==typeof e.announce?[e.announce]:null==e.announce?[]:e.announce;t=t.map(e=>(e=e.toString(),"/"===e[e.length-1]&&(e=e.substring(0,e.length-1)),e)),t=l(t);const i=!1!==this._wrtc&&(!!this._wrtc||s.WEBRTC_SUPPORT),a=e=>{n.nextTick(()=>{this.emit("warning",e)})};this._trackers=t.map(e=>{let t;try{t=new URL(e)}catch(t){return a(new Error(`Invalid tracker URL: ${e}`)),null}const n=t.port;if(0>n||65535<n)return a(new Error(`Invalid tracker port: ${e}`)),null;const r=t.protocol;return("http:"===r||"https:"===r)&&"function"==typeof u?new u(this,e):"udp:"===r&&"function"==typeof f?new f(this,e):("ws:"===r||"wss:"===r)&&i?"ws:"===r&&"undefined"!=typeof window&&"https:"===window.location.protocol?(a(new Error(`Unsupported tracker protocol: ${e}`)),null):new p(this,e):(a(new Error(`Unsupported tracker protocol: ${e}`)),null)}).filter(Boolean)}start(e){e=this._defaultAnnounceOpts(e),e.event="started",o("send `start` %o",e),this._announce(e),this._trackers.forEach(e=>{e.setInterval()})}stop(e){e=this._defaultAnnounceOpts(e),e.event="stopped",o("send `stop` %o",e),this._announce(e)}complete(e){e||(e={}),e=this._defaultAnnounceOpts(e),e.event="completed",o("send `complete` %o",e),this._announce(e)}update(e){e=this._defaultAnnounceOpts(e),e.event&&delete e.event,o("send `update` %o",e),this._announce(e)}_announce(e){this._trackers.forEach(t=>{t.announce(e)})}scrape(e){o("send `scrape`"),e||(e={}),this._trackers.forEach(t=>{t.scrape(e)})}setInterval(e){o("setInterval %d",e),this._trackers.forEach(t=>{t.setInterval(e)})}destroy(e){if(!this.destroyed){this.destroyed=!0,o("destroy");const t=this._trackers.map(e=>t=>{e.destroy(t)});d(t,e),this._trackers=[],this._getAnnounceOpts=null}}_defaultAnnounceOpts(e={}){return null==e.numwant&&(e.numwant=c.DEFAULT_ANNOUNCE_PEERS),null==e.uploaded&&(e.uploaded=0),null==e.downloaded&&(e.downloaded=0),this._getAnnounceOpts&&(e=Object.assign({},e,this._getAnnounceOpts())),e}}h.scrape=(e,t)=>{if(t=a(t),!e.infoHash)throw new Error("Option `infoHash` is required");if(!e.announce)throw new Error("Option `announce` is required");const n=Object.assign({},e,{infoHash:Array.isArray(e.infoHash)?e.infoHash[0]:e.infoHash,peerId:r.from("01234567890123456789"),port:6881}),o=new h(n);o.once("error",t),o.once("warning",t);let i=Array.isArray(e.infoHash)?e.infoHash.length:1;const d={};return o.on("scrape",e=>{if(i-=1,d[e.infoHash]=e,0===i){o.destroy();const e=Object.keys(d);1===e.length?t(null,d[e[0]]):t(null,d)}}),e.infoHash=Array.isArray(e.infoHash)?e.infoHash.map(e=>r.from(e,"hex")):r.from(e.infoHash,"hex"),o.scrape({infoHash:e.infoHash}),o},t.exports=h}).call(this,e("_process"),e("buffer").Buffer)},{"./lib/client/http-tracker":21,"./lib/client/udp-tracker":21,"./lib/client/websocket-tracker":17,"./lib/common":18,_process:61,buffer:26,debug:30,events:33,once:56,"run-parallel":89,"simple-peer":94,uniq:114}],16:[function(e,t){const n=e("events");t.exports=class extends n{constructor(e,t){super(),this.client=e,this.announceUrl=t,this.interval=null,this.destroyed=!1}setInterval(e){null==e&&(e=this.DEFAULT_ANNOUNCE_INTERVAL),clearInterval(this.interval),e&&(this.interval=setInterval(()=>{this.announce(this.client._defaultAnnounceOpts())},e),this.interval.unref&&this.interval.unref())}}},{events:33}],17:[function(e,t){function o(){}const i=e("debug")("bittorrent-tracker:websocket-tracker"),a=e("simple-peer"),d=e("randombytes"),l=e("simple-websocket"),c=e("../common"),u=e("./tracker"),f={};class p extends u{constructor(e,t,n){super(e,t),i("new websocket tracker %s",t),this.peers={},this.socket=null,this.reconnecting=!1,this.retries=0,this.reconnectTimer=null,this.expectingResponse=!1,this._openSocket()}announce(e){if(this.destroyed||this.reconnecting)return;if(!this.socket.connected)return void this.socket.once("connect",()=>{this.announce(e)});const t=Object.assign({},e,{action:"announce",info_hash:this.client._infoHashBinary,peer_id:this.client._peerIdBinary});if(this._trackerId&&(t.trackerid=this._trackerId),"stopped"===e.event||"completed"===e.event)this._send(t);else{const n=s(e.numwant,10);this._generateOffers(n,e=>{t.numwant=n,t.offers=e,this._send(t)})}}scrape(e){if(this.destroyed||this.reconnecting)return;if(!this.socket.connected)return void this.socket.once("connect",()=>{this.scrape(e)});const t=Array.isArray(e.infoHash)&&0<e.infoHash.length?e.infoHash.map(e=>e.toString("binary")):e.infoHash&&e.infoHash.toString("binary")||this.client._infoHashBinary;this._send({action:"scrape",info_hash:t})}destroy(e=o){function t(){r&&(clearTimeout(r),r=null),n.removeListener("data",t),n.destroy(),n=null}if(this.destroyed)return e(null);for(const t in this.destroyed=!0,clearInterval(this.interval),clearTimeout(this.reconnectTimer),this.peers){const e=this.peers[t];clearTimeout(e.trackerTimeout),e.destroy()}if(this.peers=null,this.socket&&(this.socket.removeListener("connect",this._onSocketConnectBound),this.socket.removeListener("data",this._onSocketDataBound),this.socket.removeListener("close",this._onSocketCloseBound),this.socket.removeListener("error",this._onSocketErrorBound),this.socket=null),this._onSocketConnectBound=null,this._onSocketErrorBound=null,this._onSocketDataBound=null,this._onSocketCloseBound=null,f[this.announceUrl]&&(f[this.announceUrl].consumers-=1),0<f[this.announceUrl].consumers)return e();let n=f[this.announceUrl];if(delete f[this.announceUrl],n.on("error",o),n.once("close",e),!this.expectingResponse)return t();var r=setTimeout(t,c.DESTROY_TIMEOUT);n.once("data",t)}_openSocket(){this.destroyed=!1,this.peers||(this.peers={}),this._onSocketConnectBound=()=>{this._onSocketConnect()},this._onSocketErrorBound=e=>{this._onSocketError(e)},this._onSocketDataBound=e=>{this._onSocketData(e)},this._onSocketCloseBound=()=>{this._onSocketClose()},this.socket=f[this.announceUrl],this.socket?(f[this.announceUrl].consumers+=1,this.socket.connected&&this._onSocketConnectBound()):(this.socket=f[this.announceUrl]=new l(this.announceUrl),this.socket.consumers=1,this.socket.once("connect",this._onSocketConnectBound)),this.socket.on("data",this._onSocketDataBound),this.socket.once("close",this._onSocketCloseBound),this.socket.once("error",this._onSocketErrorBound)}_onSocketConnect(){this.destroyed||this.reconnecting&&(this.reconnecting=!1,this.retries=0,this.announce(this.client._defaultAnnounceOpts()))}_onSocketData(e){if(!this.destroyed){this.expectingResponse=!1;try{e=JSON.parse(e)}catch(e){return void this.client.emit("warning",new Error("Invalid tracker response"))}"announce"===e.action?this._onAnnounceResponse(e):"scrape"===e.action?this._onScrapeResponse(e):this._onSocketError(new Error(`invalid action in WS response: ${e.action}`))}}_onAnnounceResponse(e){if(e.info_hash!==this.client._infoHashBinary)return void i("ignoring websocket data from %s for %s (looking for %s: reused socket)",this.announceUrl,c.binaryToHex(e.info_hash),this.client.infoHash);if(e.peer_id&&e.peer_id===this.client._peerIdBinary)return;i("received %s from %s for %s",JSON.stringify(e),this.announceUrl,this.client.infoHash);const t=e["failure reason"];if(t)return this.client.emit("warning",new Error(t));const n=e["warning message"];n&&this.client.emit("warning",new Error(n));const r=e.interval||e["min interval"];r&&this.setInterval(1e3*r);const o=e["tracker id"];if(o&&(this._trackerId=o),null!=e.complete){const t=Object.assign({},e,{announce:this.announceUrl,infoHash:c.binaryToHex(e.info_hash)});this.client.emit("update",t)}let a;if(e.offer&&e.peer_id&&(i("creating peer (from remote offer)"),a=this._createPeer(),a.id=c.binaryToHex(e.peer_id),a.once("signal",t=>{const n={action:"announce",info_hash:this.client._infoHashBinary,peer_id:this.client._peerIdBinary,to_peer_id:e.peer_id,answer:t,offer_id:e.offer_id};this._trackerId&&(n.trackerid=this._trackerId),this._send(n)}),a.signal(e.offer),this.client.emit("peer",a)),e.answer&&e.peer_id){const t=c.binaryToHex(e.offer_id);a=this.peers[t],a?(a.id=c.binaryToHex(e.peer_id),a.signal(e.answer),this.client.emit("peer",a),clearTimeout(a.trackerTimeout),a.trackerTimeout=null,delete this.peers[t]):i(`got unexpected answer: ${JSON.stringify(e.answer)}`)}}_onScrapeResponse(e){e=e.files||{};const t=Object.keys(e);return 0===t.length?void this.client.emit("warning",new Error("invalid scrape response")):void t.forEach(t=>{const n=Object.assign(e[t],{announce:this.announceUrl,infoHash:c.binaryToHex(t)});this.client.emit("scrape",n)})}_onSocketClose(){this.destroyed||(this.destroy(),this._startReconnectTimer())}_onSocketError(e){this.destroyed||(this.destroy(),this.client.emit("warning",e),this._startReconnectTimer())}_startReconnectTimer(){const e=r(Math.random()*120000)+s(n(2,this.retries)*10000,1800000);this.reconnecting=!0,clearTimeout(this.reconnectTimer),this.reconnectTimer=setTimeout(()=>{this.retries++,this._openSocket()},e),this.reconnectTimer.unref&&this.reconnectTimer.unref(),i("reconnecting socket in %s ms",e)}_send(e){if(!this.destroyed){this.expectingResponse=!0;const t=JSON.stringify(e);i("send %s",t),this.socket.send(t)}}_generateOffers(e,t){function n(){const e=d(20).toString("hex");i("creating peer (from _generateOffers)");const t=o.peers[e]=o._createPeer({initiator:!0});t.once("signal",t=>{a.push({offer:t,offer_id:c.hexToBinary(e)}),r()}),t.trackerTimeout=setTimeout(()=>{i("tracker timeout: 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e;null!==(e=this._current.read())&&this._drained;)this._drained=this.push(e);this._forwarding=!1}}destroy(e){this.destroyed||(this.destroyed=!0,this._current&&this._current.destroy&&this._current.destroy(),"function"!=typeof this._queue&&this._queue.forEach(e=>{e.destroy&&e.destroy()}),e&&this.emit("error",e),this.emit("close"))}_next(){if(this._current=null,"function"==typeof this._queue)this._queue((e,t)=>e?this.destroy(e):void(t=this._toStreams2(t),this._attachErrorListener(t),this._gotNextStream(t)));else{var e=this._queue.shift();"function"==typeof e&&(e=this._toStreams2(e()),this._attachErrorListener(e)),this._gotNextStream(e)}}_gotNextStream(e){if(!e)return this.push(null),void this.destroy();this._current=e,this._forward();const t=()=>{this._forward()},n=()=>{e._readableState.ended||this.destroy()},r=()=>{this._current=null,e.removeListener("readable",t),e.removeListener("end",r),e.removeListener("close",n),this._next()};e.on("readable",t),e.once("end",r),e.once("close",n)}_attachErrorListener(e){if(!e)return;const t=n=>{e.removeListener("error",t),this.destroy(n)};e.once("error",t)}}a.obj=e=>new a(e,{objectMode:!0,highWaterMark:16}),t.exports=a},{"readable-stream":85}],55:[function(e,t){t.exports=function(e,t){var n=null;return e.on(t,function(e){if(n){var t=n;n=null,t(e)}}),function(e){n=e}}},{}],56:[function(e,t){function n(e){var t=function(){return t.called?t.value:(t.called=!0,t.value=e.apply(this,arguments))};return t.called=!1,t}function r(e){var t=function(){if(t.called)throw new Error(t.onceError);return t.called=!0,t.value=e.apply(this,arguments)},n=e.name||"Function wrapped with `once`";return t.onceError=n+" shouldn't be called more than once",t.called=!1,t}var o=e("wrappy");t.exports=o(n),t.exports.strict=o(r),n.proto=n(function(){Object.defineProperty(Function.prototype,"once",{value:function(){return n(this)},configurable:!0}),Object.defineProperty(Function.prototype,"onceStrict",{value:function(){return r(this)},configurable:!0})})},{wrappy:122}],57:[function(e,t){function n(e){if(/^-?\d+$/.test(e))return parseInt(e,10);var t;if(t=e.match(/^(-?\d+)(-|\.\.\.?|\u2025|\u2026|\u22EF)(-?\d+)$/)){var n=t[1],r=t[2],o=t[3];if(n&&o){n=parseInt(n),o=parseInt(o);var a=[],d=n<o?1:-1;("-"==r||".."==r||"\u2025"==r)&&(o+=d);for(var s=n;s!=o;s+=d)a.push(s);return a}}return[]}t.exports.parse=function(e){var t=e.split(","),r=t.map(function(e){return n(e)});return 0===r.length?[]:1===r.length?Array.isArray(r[0])?r[0]:r:r.reduce(function(e,t){return Array.isArray(e)||(e=[e]),Array.isArray(t)||(t=[t]),e.concat(t)})}},{}],58:[function(e,t){(function(n,r){function o(e){if("string"==typeof e&&/^(stream-)?magnet:/.test(e))return h(e);if("string"==typeof 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0!==e.info.private&&(t.private=!!e.info.private),e["creation date"]&&(t.created=new Date(1e3*e["creation date"])),e["created by"]&&(t.createdBy=e["created by"].toString()),r.isBuffer(e.comment)&&(t.comment=e.comment.toString()),Array.isArray(e["announce-list"])&&0<e["announce-list"].length?e["announce-list"].forEach(e=>{e.forEach(e=>{t.announce.push(e.toString())})}):e.announce&&t.announce.push(e.announce.toString()),r.isBuffer(e["url-list"])&&(e["url-list"]=0<e["url-list"].length?[e["url-list"]]:[]),t.urlList=(e["url-list"]||[]).map(e=>e.toString()),_(t.announce),_(t.urlList);const n=e.info.files||[e.info];t.files=n.map((e,r)=>{const o=[].concat(t.name,e["path.utf-8"]||e.path||[]).map(e=>e.toString());return{path:m.join.apply(null,[m.sep].concat(o)).slice(1),name:o[o.length-1],length:e.length,offset:n.slice(0,r).reduce(d,0)}}),t.length=n.reduce(d,0);const o=t.files[t.files.length-1];return t.pieceLength=e.info["piece length"],t.lastPieceLength=(o.offset+o.length)%t.pieceLength||t.pieceLength,t.pieces=s(e.info.pieces),t}function a(e){return"undefined"!=typeof Blob&&e instanceof Blob}function d(e,t){return e+t.length}function s(e){const t=[];for(let n=0;n<e.length;n+=20)t.push(e.slice(n,n+20).toString("hex"));return t}function l(e,t){if(!e)throw new Error(`Torrent is missing required field: ${t}`)}const c=e("bencode"),u=e("blob-to-buffer"),f=e("fs"),p=e("simple-get"),h=e("magnet-uri"),m=e("path"),g=e("simple-sha1"),_=e("uniq");t.exports=o,t.exports.remote=function(e,t){function r(e){try{i=o(e)}catch(e){return t(e)}i&&i.infoHash?t(null,i):t(new Error("Invalid torrent identifier"))}let i;if("function"!=typeof t)throw new Error("second argument must be a Function");try{i=o(e)}catch(e){}i&&i.infoHash?n.nextTick(()=>{t(null,i)}):a(e)?u(e,(e,n)=>e?t(new Error(`Error converting Blob: ${e.message}`)):void r(n)):"function"==typeof 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data","ERR_SIGNALING"))}_addIceCandidate(e){var t=new this._wrtc.RTCIceCandidate(e);this._pc.addIceCandidate(t).catch(e=>{!t.address||t.address.endsWith(".local")?i("Ignoring unsupported ICE candidate."):this.destroy(o(e,"ERR_ADD_ICE_CANDIDATE"))})}send(e){this._channel.send(e)}addTransceiver(e,t){if(this._debug("addTransceiver()"),this.initiator)try{this._pc.addTransceiver(e,t),this._needsNegotiation()}catch(e){this.destroy(o(e,"ERR_ADD_TRANSCEIVER"))}else this.emit("signal",{transceiverRequest:{kind:e,init:t}})}addStream(e){this._debug("addStream()"),e.getTracks().forEach(t=>{this.addTrack(t,e)})}addTrack(e,t){this._debug("addTrack()");var n=this._senderMap.get(e)||new Map,r=n.get(t);if(!r)r=this._pc.addTrack(e,t),n.set(t,r),this._senderMap.set(e,n),this._needsNegotiation();else if(r.removed)throw o("Track has been removed. You should enable/disable tracks that you want to re-add.","ERR_SENDER_REMOVED");else throw o("Track has already been added to that stream.","ERR_SENDER_ALREADY_ADDED")}replaceTrack(e,t,n){this._debug("replaceTrack()");var r=this._senderMap.get(e),i=r?r.get(n):null;if(!i)throw o("Cannot replace track that was never added.","ERR_TRACK_NOT_ADDED");t&&this._senderMap.set(t,r),null==i.replaceTrack?this.destroy(o("replaceTrack is not supported in this browser","ERR_UNSUPPORTED_REPLACETRACK")):i.replaceTrack(t)}removeTrack(e,t){this._debug("removeSender()");var n=this._senderMap.get(e),r=n?n.get(t):null;if(!r)throw o("Cannot remove track that was never added.","ERR_TRACK_NOT_ADDED");try{r.removed=!0,this._pc.removeTrack(r)}catch(e){"NS_ERROR_UNEXPECTED"===e.name?this._sendersAwaitingStable.push(r):this.destroy(o(e,"ERR_REMOVE_TRACK"))}this._needsNegotiation()}removeStream(e){this._debug("removeSenders()"),e.getTracks().forEach(t=>{this.removeTrack(t,e)})}_needsNegotiation(){this._debug("_needsNegotiation");this._batchedNegotiation||(this._batchedNegotiation=!0,c(()=>{this._batchedNegotiation=!1,this._debug("starting batched negotiation"),this.negotiate()}))}negotiate(){this.initiator?this._isNegotiating?(this._queuedNegotiation=!0,this._debug("already negotiating, queueing")):(this._debug("start negotiation"),setTimeout(()=>{this._createOffer()},0)):!this._isNegotiating&&(this._debug("requesting negotiation from initiator"),this.emit("signal",{renegotiate:!0})),this._isNegotiating=!0}destroy(e){this._destroy(e,()=>{})}_destroy(e,t){if(!this.destroyed){if(this._debug("destroy (error: 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this.destroy(o("Data channel event is missing `channel` property","ERR_DATA_CHANNEL"));this._channel=e.channel,this._channel.binaryType="arraybuffer","number"==typeof this._channel.bufferedAmountLowThreshold&&(this._channel.bufferedAmountLowThreshold=u),this.channelName=this._channel.label,this._channel.onmessage=e=>{this._onChannelMessage(e)},this._channel.onbufferedamountlow=()=>{this._onChannelBufferedAmountLow()},this._channel.onopen=()=>{this._onChannelOpen()},this._channel.onclose=()=>{this._onChannelClose()},this._channel.onerror=e=>{this.destroy(o(e,"ERR_DATA_CHANNEL"))};var t=!1;this._closingInterval=setInterval(()=>{this._channel&&"closing"===this._channel.readyState?(t&&this._onChannelClose(),t=!0):t=!1},5000)}_read(){}_write(e,t,n){if(this.destroyed)return n(o("cannot write after peer is destroyed","ERR_DATA_CHANNEL"));if(this._connected){try{this.send(e)}catch(e){return this.destroy(o(e,"ERR_DATA_CHANNEL"))}this._channel.bufferedAmount>u?(this._debug("start backpressure: bufferedAmount %d",this._channel.bufferedAmount),this._cb=n):n(null)}else this._debug("write before connect"),this._chunk=e,this._cb=n}_onFinish(){if(!this.destroyed){const e=()=>{setTimeout(()=>this.destroy(),1e3)};this._connected?e():this.once("connect",e)}}_startIceCompleteTimeout(){this.destroyed||this._iceCompleteTimer||(this._debug("started iceComplete timeout"),this._iceCompleteTimer=setTimeout(()=>{this._iceComplete||(this._iceComplete=!0,this._debug("iceComplete timeout completed"),this.emit("iceTimeout"),this.emit("_iceComplete"))},this.iceCompleteTimeout))}_createOffer(){this.destroyed||this._pc.createOffer(this.offerOptions).then(e=>{if(this.destroyed)return;this.trickle||this.allowHalfTrickle||(e.sdp=r(e.sdp)),e.sdp=this.sdpTransform(e.sdp);const t=()=>{if(!this.destroyed){var t=this._pc.localDescription||e;this._debug("signal"),this.emit("signal",{type:t.type,sdp:t.sdp})}};this._pc.setLocalDescription(e).then(()=>{this._debug("createOffer success");this.destroyed||(this.trickle||this._iceComplete?t():this.once("_iceComplete",t))}).catch(e=>{this.destroy(o(e,"ERR_SET_LOCAL_DESCRIPTION"))})}).catch(e=>{this.destroy(o(e,"ERR_CREATE_OFFER"))})}_requestMissingTransceivers(){this._pc.getTransceivers&&this._pc.getTransceivers().forEach(e=>{e.mid||!e.sender.track||e.requested||(e.requested=!0,this.addTransceiver(e.sender.track.kind))})}_createAnswer(){this.destroyed||this._pc.createAnswer(this.answerOptions).then(e=>{if(this.destroyed)return;this.trickle||this.allowHalfTrickle||(e.sdp=r(e.sdp)),e.sdp=this.sdpTransform(e.sdp);const t=()=>{if(!this.destroyed){var t=this._pc.localDescription||e;this._debug("signal"),this.emit("signal",{type:t.type,sdp:t.sdp}),this.initiator||this._requestMissingTransceivers()}};this._pc.setLocalDescription(e).then(()=>{this.destroyed||(this.trickle||this._iceComplete?t():this.once("_iceComplete",t))}).catch(e=>{this.destroy(o(e,"ERR_SET_LOCAL_DESCRIPTION"))})}).catch(e=>{this.destroy(o(e,"ERR_CREATE_ANSWER"))})}_onConnectionStateChange(){this.destroyed||"failed"===this._pc.connectionState&&this.destroy(o("Connection failed.","ERR_CONNECTION_FAILURE"))}_onIceStateChange(){if(!this.destroyed){var e=this._pc.iceConnectionState,t=this._pc.iceGatheringState;this._debug("iceStateChange (connection: %s) (gathering: %s)",e,t),this.emit("iceStateChange",e,t),("connected"===e||"completed"===e)&&(this._pcReady=!0,this._maybeReady()),"failed"===e&&this.destroy(o("Ice connection failed.","ERR_ICE_CONNECTION_FAILURE")),"closed"===e&&this.destroy(o("Ice connection closed.","ERR_ICE_CONNECTION_CLOSED"))}}getStats(e){const 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r={},i={},a={},d=!1;n.forEach(e=>{("remotecandidate"===e.type||"remote-candidate"===e.type)&&(r[e.id]=e),("localcandidate"===e.type||"local-candidate"===e.type)&&(i[e.id]=e),("candidatepair"===e.type||"candidate-pair"===e.type)&&(a[e.id]=e)});const s=e=>{d=!0;var t=i[e.localCandidateId];t&&(t.ip||t.address)?(this.localAddress=t.ip||t.address,this.localPort=+t.port):t&&t.ipAddress?(this.localAddress=t.ipAddress,this.localPort=+t.portNumber):"string"==typeof e.googLocalAddress&&(t=e.googLocalAddress.split(":"),this.localAddress=t[0],this.localPort=+t[1]),this.localAddress&&(this.localFamily=this.localAddress.includes(":")?"IPv6":"IPv4");var n=r[e.remoteCandidateId];n&&(n.ip||n.address)?(this.remoteAddress=n.ip||n.address,this.remotePort=+n.port):n&&n.ipAddress?(this.remoteAddress=n.ipAddress,this.remotePort=+n.portNumber):"string"==typeof e.googRemoteAddress&&(n=e.googRemoteAddress.split(":"),this.remoteAddress=n[0],this.remotePort=+n[1]),this.remoteAddress&&(this.remoteFamily=this.remoteAddress.includes(":")?"IPv6":"IPv4"),this._debug("connect local: %s:%s remote: %s:%s",this.localAddress,this.localPort,this.remoteAddress,this.remotePort)};if(n.forEach(e=>{"transport"===e.type&&e.selectedCandidatePairId&&s(a[e.selectedCandidatePairId]),("googCandidatePair"===e.type&&"true"===e.googActiveConnection||("candidatepair"===e.type||"candidate-pair"===e.type)&&e.selected)&&s(e)}),!d&&(!Object.keys(a).length||Object.keys(i).length))return void setTimeout(e,100);if(this._connecting=!1,this._connected=!0,this._chunk){try{this.send(this._chunk)}catch(e){return this.destroy(o(e,"ERR_DATA_CHANNEL"))}this._chunk=null,this._debug("sent chunk from \"write before connect\"");var l=this._cb;this._cb=null,l(null)}"number"!=typeof 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r=this;r._body.push(e),n()},p.prototype.abort=p.prototype.destroy=function(){var e=this;e._destroyed=!0,r.clearTimeout(e._fetchTimer),e._response&&(e._response._destroyed=!0),e._xhr?e._xhr.abort():e._fetchAbortController&&e._fetchAbortController.abort()},p.prototype.end=function(e,t,n){var r=this;"function"==typeof e&&(n=e,e=void 0),c.Writable.prototype.end.call(r,e,t,n)},p.prototype.flushHeaders=function(){},p.prototype.setTimeout=function(){},p.prototype.setNoDelay=function(){},p.prototype.setSocketKeepAlive=function(){};var h=["accept-charset","accept-encoding","access-control-request-headers","access-control-request-method","connection","content-length","cookie","cookie2","date","dnt","expect","host","keep-alive","origin","referer","te","trailer","transfer-encoding","upgrade","via"]}).call(this,e("_process"),"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof 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V=this.pathname||"",Q=this.search||"";this.path=V+Q}return this.href=this.format(),this},r.prototype.format=function(){var e=this.auth||"";e&&(e=encodeURIComponent(e),e=e.replace(/%3A/i,":"),e+="@");var t=this.protocol||"",n=this.pathname||"",r=this.hash||"",o=!1,i="";this.host?o=e+this.host:this.hostname&&(o=e+(-1===this.hostname.indexOf(":")?this.hostname:"["+this.hostname+"]"),this.port&&(o+=":"+this.port)),this.query&&d.isObject(this.query)&&Object.keys(this.query).length&&(i=x.stringify(this.query));var a=this.search||i&&"?"+i||"";return t&&":"!==t.substr(-1)&&(t+=":"),this.slashes||(!t||E[t])&&!1!==o?(o="//"+(o||""),n&&"/"!==n.charAt(0)&&(n="/"+n)):!o&&(o=""),r&&"#"!==r.charAt(0)&&(r="#"+r),a&&"?"!==a.charAt(0)&&(a="?"+a),n=n.replace(/[?#]/g,function(e){return encodeURIComponent(e)}),a=a.replace("#","%23"),t+o+n+a+r},r.prototype.resolve=function(e){return this.resolveObject(o(e,!1,!0)).format()},r.prototype.resolveObject=function(e){if(d.isString(e)){var t=new r;t.parse(e,!1,!0),e=t}for(var n=new r,o=Object.keys(this),a=0,l;a<o.length;a++)l=o[a],n[l]=this[l];if(n.hash=e.hash,""===e.href)return n.href=n.format(),n;if(e.slashes&&!e.protocol){for(var c=Object.keys(e),u=0,f;u<c.length;u++)f=c[u],"protocol"!==f&&(n[f]=e[f]);return E[n.protocol]&&n.hostname&&!n.pathname&&(n.path=n.pathname="/"),n.href=n.format(),n}if(e.protocol&&e.protocol!==n.protocol){if(!E[e.protocol]){for(var h=Object.keys(e),m=0,g;m<h.length;m++)g=h[m],n[g]=e[g];return n.href=n.format(),n}if(n.protocol=e.protocol,!e.host&&!w[e.protocol]){for(var _=(e.pathname||"").split("/");_.length&&!(e.host=_.shift()););e.host||(e.host=""),e.hostname||(e.hostname=""),""!==_[0]&&_.unshift(""),2>_.length&&_.unshift(""),n.pathname=_.join("/")}else n.pathname=e.pathname;if(n.search=e.search,n.query=e.query,n.host=e.host||"",n.auth=e.auth,n.hostname=e.hostname||e.host,n.port=e.port,n.pathname||n.search){var b=n.pathname||"",p=n.search||"";n.path=b+p}return n.slashes=n.slashes||e.slashes,n.href=n.format(),n}var s=n.pathname&&"/"===n.pathname.charAt(0),y=e.host||e.pathname&&"/"===e.pathname.charAt(0),x=y||s||n.host&&e.pathname,S=x,C=n.pathname&&n.pathname.split("/")||[],_=e.pathname&&e.pathname.split("/")||[],I=n.protocol&&!E[n.protocol];if(I&&(n.hostname="",n.port=null,n.host&&(""===C[0]?C[0]=n.host:C.unshift(n.host)),n.host="",e.protocol&&(e.hostname=null,e.port=null,e.host&&(""===_[0]?_[0]=e.host:_.unshift(e.host)),e.host=null),x=x&&(""===_[0]||""===C[0])),y)n.host=e.host||""===e.host?e.host:n.host,n.hostname=e.hostname||""===e.hostname?e.hostname:n.hostname,n.search=e.search,n.query=e.query,C=_;else if(_.length)C||(C=[]),C.pop(),C=C.concat(_),n.search=e.search,n.query=e.query;else if(!d.isNullOrUndefined(e.search)){if(I){n.hostname=n.host=C.shift();var L=!!(n.host&&0<n.host.indexOf("@"))&&n.host.split("@");L&&(n.auth=L.shift(),n.host=n.hostname=L.shift())}return n.search=e.search,n.query=e.query,d.isNull(n.pathname)&&d.isNull(n.search)||(n.path=(n.pathname?n.pathname:"")+(n.search?n.search:"")),n.href=n.format(),n}if(!C.length)return n.pathname=null,n.path=n.search?"/"+n.search:null,n.href=n.format(),n;for(var T=C.slice(-1)[0],B=(n.host||e.host||1<C.length)&&("."===T||".."===T)||""===T,R=0,A=C.length;0<=A;A--)T=C[A],"."===T?C.splice(A,1):".."===T?(C.splice(A,1),R++):R&&(C.splice(A,1),R--);if(!x&&!S)for(;R--;R)C.unshift("..");x&&""!==C[0]&&(!C[0]||"/"!==C[0].charAt(0))&&C.unshift(""),B&&"/"!==C.join("/").substr(-1)&&C.push("");var U=""===C[0]||C[0]&&"/"===C[0].charAt(0);if(I){n.hostname=n.host=U?"":C.length?C.shift():"";var L=!!(n.host&&0<n.host.indexOf("@"))&&n.host.split("@");L&&(n.auth=L.shift(),n.host=n.hostname=L.shift())}return x=x||n.host&&C.length,x&&!U&&C.unshift(""),C.length?n.pathname=C.join("/"):(n.pathname=null,n.path=null),d.isNull(n.pathname)&&d.isNull(n.search)||(n.path=(n.pathname?n.pathname:"")+(n.search?n.search:"")),n.auth=e.auth||n.auth,n.slashes=n.slashes||e.slashes,n.href=n.format(),n},r.prototype.parseHost=function(){var e=this.host,t=u.exec(e);t&&(t=t[0],":"!==t&&(this.port=t.substr(1)),e=e.substr(0,e.length-t.length)),e&&(this.hostname=e)}},{"./util":117,punycode:63,querystring:66}],117:[function(e,t){'use strict';t.exports={isString:function(e){return"string"==typeof e},isObject:function(e){return"object"==typeof e&&null!==e},isNull:function(e){return null===e},isNullOrUndefined:function(e){return null==e}}},{}],118:[function(e,t){(function(n){const{EventEmitter:r}=e("events"),o=e("bencode"),i=e("bitfield"),d=e("debug")("ut_metadata"),s=e("simple-sha1"),l=1E3,c=16384;t.exports=e=>{class t extends r{constructor(t){super(),this._wire=t,this._fetching=!1,this._metadataComplete=!1,this._metadataSize=null,this._remainingRejects=null,this._bitfield=new i(0,{grow:l}),n.isBuffer(e)&&this.setMetadata(e)}onHandshake(e,t,n){this._infoHash=e}onExtendedHandshake(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=a(this._metadataSize/c),this._remainingRejects=2*this._numPieces,this._requestPieces()):this.emit("warning",new Error("Peer does not have metadata")):this.emit("warning",new Error("Peer does not support ut_metadata"))}onMessage(e){let t,n;try{const r=e.toString(),i=r.indexOf("ee")+2;t=o.decode(r.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);}}fetch(){this._metadataComplete||(this._fetching=!0,this._metadataSize&&this._requestPieces())}cancel(){this._fetching=!1}setMetadata(e){if(this._metadataComplete)return!0;d("set metadata");try{const t=o.decode(e).info;t&&(e=o.encode(t))}catch(e){}return!(this._infoHash&&this._infoHash!==s.sync(e))&&(this.cancel(),this.metadata=e,this._metadataComplete=!0,this._metadataSize=this.metadata.length,this._wire.extendedHandshake.metadata_size=this._metadataSize,this.emit("metadata",o.encode({info:o.decode(this.metadata)})),!0)}_send(e,t){let r=o.encode(e);n.isBuffer(t)&&(r=n.concat([r,t])),this._wire.extended("ut_metadata",r)}_request(e){this._send({msg_type:0,piece:e})}_data(e,t,n){const r={msg_type:1,piece:e};"number"==typeof n&&(r.total_size=n),this._send(r,t)}_reject(e){this._send({msg_type:2,piece:e})}_onRequest(e){if(!this._metadataComplete)return void this._reject(e);const t=e*c;let n=t+c;n>this._metadataSize&&(n=this._metadataSize);const r=this.metadata.slice(t,n);this._data(e,r,this._metadataSize)}_onData(e,t,n){t.length>c||!this._fetching||(t.copy(this.metadata,e*c),this._bitfield.set(e),this._checkDone())}_onReject(e){0<this._remainingRejects&&this._fetching?(this._request(e),this._remainingRejects-=1):this.emit("warning",new Error("Peer sent \"reject\" too much"))}_requestPieces(){if(this._fetching){this.metadata=n.alloc(this._metadataSize);for(let e=0;e<this._numPieces;e++)this._request(e)}}_checkDone(){let e=!0;for(let t=0;t<this._numPieces;t++)if(!this._bitfield.get(t)){e=!1;break}if(e){const e=this.setMetadata(this.metadata);e||this._failedMetadata()}}_failedMetadata(){this._bitfield=new i(0,{grow:l}),this._remainingRejects-=this._numPieces,0<this._remainingRejects?this._requestPieces():this.emit("warning",new Error("Peer sent invalid metadata"))}}return t.prototype.name="ut_metadata",t}}).call(this,e("buffer").Buffer)},{bencode:11,bitfield:13,buffer:26,debug:30,events:33,"simple-sha1":95}],119:[function(e,t){(function(e){function n(t){try{if(!e.localStorage)return!1}catch(e){return!1}var n=e.localStorage[t];return null!=n&&"true"===(n+"").toLowerCase()}t.exports=function(e,t){function r(){if(!o){if(n("throwDeprecation"))throw new Error(t);else n("traceDeprecation")?console.trace(t):console.warn(t);o=!0}return e.apply(this,arguments)}if(n("noDeprecation"))return e;var o=!1;return r}}).call(this,"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global)},{}],120:[function(e,t){(function(n){function o(){return{version:0,flags:0,entries:[]}}const i=e("binary-search"),a=e("events"),d=e("mp4-stream"),s=e("mp4-box-encoding"),l=e("range-slice-stream");class c{constructor(e,t){this._entries=e,this._countName=t||"count",this._index=0,this._offset=0,this.value=this._entries[0]}inc(){this._offset++,this._offset>=this._entries[this._index][this._countName]&&(this._index++,this._offset=0),this.value=this._entries[this._index]}}t.exports=class extends a{constructor(e){super(),this._tracks=[],this._file=e,this._decoder=null,this._findMoov(0)}_findMoov(e){this._decoder&&this._decoder.destroy();let t=0;this._decoder=d.decode();const n=this._file.createReadStream({start:e});n.pipe(this._decoder);const r=o=>{"moov"===o.type?(this._decoder.removeListener("box",r),this._decoder.decode(e=>{n.destroy();try{this._processMoov(e)}catch(e){e.message=`Cannot parse mp4 file: ${e.message}`,this.emit("error",e)}})):o.length<4096?(t+=o.length,this._decoder.ignore()):(this._decoder.removeListener("box",r),t+=o.length,n.destroy(),this._decoder.destroy(),this._findMoov(e+t))};this._decoder.on("box",r)}_processMoov(e){const t=e.traks;this._tracks=[],this._hasVideo=!1,this._hasAudio=!1;for(let n=0;n<t.length;n++){const i=t[n],a=i.mdia.minf.stbl,d=a.stsd.entries[0],s=i.mdia.hdlr.handlerType;let l,u;if("vide"===s&&"avc1"===d.type){if(this._hasVideo)continue;this._hasVideo=!0,l="avc1",d.avcC&&(l+=`.${d.avcC.mimeCodec}`),u=`video/mp4; codecs="${l}"`}else if("soun"===s&&"mp4a"===d.type){if(this._hasAudio)continue;this._hasAudio=!0,l="mp4a",d.esds&&d.esds.mimeCodec&&(l+=`.${d.esds.mimeCodec}`),u=`audio/mp4; codecs="${l}"`}else continue;const f=[];let p=0,h=0,m=0,g=0,_=0,b=0;const y=new c(a.stts.entries);let w=null;a.ctts&&(w=new c(a.ctts.entries));for(let e=0;;){var r=a.stsc.entries[_];const t=a.stsz.entries[p],n=y.value.duration,o=w?w.value.compositionOffset:0;let i=!0;a.stss&&(i=a.stss.entries[e]===p+1);const d=a.stco||a.co64;if(f.push({size:t,duration:n,dts:b,presentationOffset:o,sync:i,offset:g+d.entries[m]}),p++,p>=a.stsz.entries.length)break;if(h++,g+=t,h>=r.samplesPerChunk){h=0,g=0,m++;const e=a.stsc.entries[_+1];e&&m+1>=e.firstChunk&&_++}b+=n,y.inc(),w&&w.inc(),i&&e++}i.mdia.mdhd.duration=0,i.tkhd.duration=0;const k=r.sampleDescriptionId,E={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:o(),ctts:o(),stsc:o(),stsz:o(),stco:o(),stss:o()}}}}],mvex:{mehd:{fragmentDuration:e.mvhd.duration},trexs:[{trackId:i.tkhd.trackId,defaultSampleDescriptionIndex:k,defaultSampleDuration:0,defaultSampleSize:0,defaultSampleFlags:0}]}};this._tracks.push({fragmentSequence:1,trackId:i.tkhd.trackId,timeScale:i.mdia.mdhd.timeScale,samples:f,currSample:null,currTime:null,moov:E,mime:u})}if(0===this._tracks.length)return void this.emit("error",new Error("no playable tracks"));e.mvhd.duration=0,this._ftyp={type:"ftyp",brand:"iso5",brandVersion:0,compatibleBrands:["iso5"]};const i=s.encode(this._ftyp),a=this._tracks.map(e=>{const t=s.encode(e.moov);return{mime:e.mime,init:n.concat([i,t])}});this.emit("ready",a)}seek(e){if(!this._tracks)throw new Error("Not ready yet; wait for 'ready' event");this._fileStream&&(this._fileStream.destroy(),this._fileStream=null);let t=-1;if(this._tracks.map((n,r)=>{n.outStream&&n.outStream.destroy(),n.inStream&&(n.inStream.destroy(),n.inStream=null);const o=n.outStream=d.encode(),i=this._generateFragment(r,e);if(!i)return o.finalize();(-1===t||i.ranges[0].start<t)&&(t=i.ranges[0].start);const a=e=>{o.destroyed||o.box(e.moof,t=>{if(t)return this.emit("error",t);if(!o.destroyed){const t=n.inStream.slice(e.ranges);t.pipe(o.mediaData(e.length,e=>{if(e)return this.emit("error",e);if(!o.destroyed){const e=this._generateFragment(r);return e?void a(e):o.finalize()}}))}})};a(i)}),0<=t){const e=this._fileStream=this._file.createReadStream({start:t});this._tracks.forEach(n=>{n.inStream=new l(t,{highWaterMark:1e7}),e.pipe(n.inStream)})}return this._tracks.map(e=>e.outStream)}_findSampleBefore(e,t){const n=this._tracks[e],o=r(n.timeScale*t);let a=i(n.samples,o,(e,n)=>{const t=e.dts+e.presentationOffset;return t-n});for(-1===a?a=0:0>a&&(a=-a-2);!n.samples[a].sync;)a--;return a}_generateFragment(e,t){const n=this._tracks[e];let r;if(r=void 0===t?n.currSample:this._findSampleBefore(e,t),r>=n.samples.length)return null;const o=n.samples[r].dts;let i=0;const a=[];for(var d=r;d<n.samples.length;d++){const e=n.samples[d];if(e.sync&&e.dts-o>=n.timeScale*1)break;i+=e.size;const t=a.length-1;0>t||a[t].end!==e.offset?a.push({start:e.offset,end:e.offset+e.size}):a[t].end+=e.size}return n.currSample=d,{moof:this._generateMoof(e,r,d),ranges:a,length:i}}_generateMoof(e,t,n){const r=this._tracks[e],o=[];let i=0;for(let a=t;a<n;a++){const e=r.samples[a];0>e.presentationOffset&&(i=1),o.push({sampleDuration:e.duration,sampleSize:e.size,sampleFlags:e.sync?33554432:16842752,sampleCompositionTimeOffset:e.presentationOffset})}const a={type:"moof",mfhd:{sequenceNumber:r.fragmentSequence++},trafs:[{tfhd:{flags:131072,trackId:r.trackId},tfdt:{baseMediaDecodeTime:r.samples[t].dts},trun:{flags:3841,dataOffset:8,entries:o,version:i}}]};return a.trafs[0].trun.dataOffset+=s.encodingLength(a),a}}}).call(this,e("buffer").Buffer)},{"binary-search":12,buffer:26,events:33,"mp4-box-encoding":49,"mp4-stream":52,"range-slice-stream":70}],121:[function(e,t){function n(e,t,o={}){return this instanceof n?void(this.detailedError=null,this._elem=t,this._elemWrapper=new r(t),this._waitingFired=!1,this._trackMeta=null,this._file=e,this._tracks=null,"none"!==this._elem.preload&&this._createMuxer(),this._onError=()=>{this.detailedError=this._elemWrapper.detailedError,this.destroy()},this._onWaiting=()=>{this._waitingFired=!0,this._muxer?this._tracks&&this._pump():this._createMuxer()},t.autoplay&&(t.preload="auto"),t.addEventListener("waiting",this._onWaiting),t.addEventListener("error",this._onError)):(console.warn("don't invoked VideoStream without 'new'"),new n(e,t,o))}const r=e("mediasource"),o=e("pump"),i=e("./mp4-remuxer");n.prototype={_createMuxer(){this._muxer=new i(this._file),this._muxer.on("ready",e=>{this._tracks=e.map(e=>{const t=this._elemWrapper.createWriteStream(e.mime);t.on("error",e=>{this._elemWrapper.error(e)});const n={muxed:null,mediaSource:t,initFlushed:!1,onInitFlushed:null};return t.write(e.init,e=>{n.initFlushed=!0,n.onInitFlushed&&n.onInitFlushed(e)}),n}),(this._waitingFired||"auto"===this._elem.preload)&&this._pump()}),this._muxer.on("error",e=>{this._elemWrapper.error(e)})},_pump(){const e=this._muxer.seek(this._elem.currentTime,!this._tracks);this._tracks.forEach((t,n)=>{const r=()=>{t.muxed&&(t.muxed.destroy(),t.mediaSource=this._elemWrapper.createWriteStream(t.mediaSource),t.mediaSource.on("error",e=>{this._elemWrapper.error(e)})),t.muxed=e[n],o(t.muxed,t.mediaSource)};t.initFlushed?r():t.onInitFlushed=e=>e?void this._elemWrapper.error(e):void r()})},destroy(){this.destroyed||(this.destroyed=!0,this._elem.removeEventListener("waiting",this._onWaiting),this._elem.removeEventListener("error",this._onError),this._tracks&&this._tracks.forEach(e=>{e.muxed&&e.muxed.destroy()}),this._elem.src="")}},t.exports=n},{"./mp4-remuxer":120,mediasource:45,pump:62}],122:[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},{}],123:[function(e,t){t.exports=function(){for(var e={},t=0,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},{}],124:[function(e,t){t.exports={version:"0.107.17"}},{}],125:[function(e,t){(function(n,r,o){function i(e){return"object"==typeof e&&null!=e&&"function"==typeof e.pipe}function a(e){return"undefined"!=typeof FileList&&e instanceof FileList}const{EventEmitter:d}=e("events"),s=e("simple-concat"),l=e("create-torrent"),c=e("debug")("webtorrent"),u=e("bittorrent-dht/client"),f=e("load-ip-set"),p=e("run-parallel"),h=e("parse-torrent"),m=e("path"),g=e("simple-peer"),_=e("randombytes"),b=e("speedometer"),y=e("./lib/tcp-pool"),w=e("./lib/torrent"),k=e("./package.json").version,E=k.replace(/\d*./g,e=>`0${e%100}`.slice(-2)).slice(0,4);class x extends d{constructor(e={}){super(),this.peerId="string"==typeof e.peerId?e.peerId:o.isBuffer(e.peerId)?e.peerId.toString("hex"):o.from(`-WW${E}-`+_(9).toString("base64")).toString("hex"),this.peerIdBuffer=o.from(this.peerId,"hex"),this.nodeId="string"==typeof e.nodeId?e.nodeId:o.isBuffer(e.nodeId)?e.nodeId.toString("hex"):_(20).toString("hex"),this.nodeIdBuffer=o.from(this.nodeId,"hex"),this._debugId=this.peerId.toString("hex").substring(0,7),this.destroyed=!1,this.listening=!1,this.torrentPort=e.torrentPort||0,this.dhtPort=e.dhtPort||0,this.tracker=e.tracker===void 0?{}:e.tracker,this.torrents=[],this.maxConns=+e.maxConns||55,this._debug("new webtorrent (peerId %s, nodeId %s, port %s)",this.peerId,this.nodeId,this.torrentPort),this.tracker&&("object"!=typeof this.tracker&&(this.tracker={}),e.rtcConfig&&(console.warn("WebTorrent: opts.rtcConfig is deprecated. Use opts.tracker.rtcConfig instead"),this.tracker.rtcConfig=e.rtcConfig),e.wrtc&&(console.warn("WebTorrent: opts.wrtc is deprecated. Use opts.tracker.wrtc instead"),this.tracker.wrtc=e.wrtc),r.WRTC&&!this.tracker.wrtc&&(this.tracker.wrtc=r.WRTC)),"function"==typeof y?this._tcpPool=new y(this):n.nextTick(()=>{this._onListening()}),this._downloadSpeed=b(),this._uploadSpeed=b(),!1!==e.dht&&"function"==typeof u?(this.dht=new u(Object.assign({},{nodeId:this.nodeId},e.dht)),this.dht.once("error",e=>{this._destroy(e)}),this.dht.once("listening",()=>{const e=this.dht.address();e&&(this.dhtPort=e.port)}),this.dht.setMaxListeners(0),this.dht.listen(this.dhtPort)):this.dht=!1,this.enableWebSeeds=!1!==e.webSeeds;const t=()=>{this.destroyed||(this.ready=!0,this.emit("ready"))};"function"==typeof f&&null!=e.blocklist?f(e.blocklist,{headers:{"user-agent":`WebTorrent/${k} (https://webtorrent.io)`}},(e,n)=>e?this.error(`Failed to load blocklist: ${e.message}`):void(this.blocked=n,t())):n.nextTick(t)}get downloadSpeed(){return this._downloadSpeed()}get uploadSpeed(){return this._uploadSpeed()}get progress(){const e=this.torrents.filter(e=>1!==e.progress),t=e.reduce((e,t)=>e+t.downloaded,0),n=e.reduce((e,t)=>e+(t.length||0),0)||1;return t/n}get ratio(){const e=this.torrents.reduce((e,t)=>e+t.uploaded,0),t=this.torrents.reduce((e,t)=>e+t.received,0)||1;return e/t}get(e){if(!(e instanceof w)){let t;try{t=h(e)}catch(e){}if(!t)return null;if(!t.infoHash)throw new Error("Invalid torrent identifier");for(const e of this.torrents)if(e.infoHash===t.infoHash)return e}else if(this.torrents.includes(e))return e;return null}download(e,t,n){return console.warn("WebTorrent: client.download() is deprecated. Use client.add() instead"),this.add(e,t,n)}add(e,t={},n){function r(){a.removeListener("_infoHash",o),a.removeListener("ready",i),a.removeListener("close",r)}if(this.destroyed)throw new Error("client is destroyed");"function"==typeof t&&([t,n]=[{},t]);const o=()=>{if(!this.destroyed)for(const e of this.torrents)if(e.infoHash===a.infoHash&&e!==a)return void a._destroy(new Error(`Cannot add duplicate torrent ${a.infoHash}`))},i=()=>{this.destroyed||("function"==typeof n&&n(a),this.emit("torrent",a))};this._debug("add"),t=t?Object.assign({},t):{};const a=new w(e,this,t);return this.torrents.push(a),a.once("_infoHash",o),a.once("ready",i),a.once("close",r),a}seed(e,t,n){if(this.destroyed)throw new Error("client is destroyed");"function"==typeof t&&([t,n]=[{},t]),this._debug("seed"),t=t?Object.assign({},t):{},t.skipVerify=!0;const r="string"==typeof e;r&&(t.path=m.dirname(e)),t.createdBy||(t.createdBy=`WebTorrent/${E}`);const o=e=>{this._debug("on seed"),"function"==typeof n&&n(e),e.emit("seed"),this.emit("seed",e)},d=this.add(null,t,e=>{const t=[t=>r?t():void e.load(c,t)];this.dht&&t.push(t=>{e.once("dhtAnnounce",t)}),p(t,t=>this.destroyed?void 0:t?e._destroy(t):void o(e))});let c;return a(e)?e=Array.from(e):!Array.isArray(e)&&(e=[e]),p(e.map(e=>t=>{i(e)?s(e,t):t(null,e)}),(e,n)=>this.destroyed?void 0:e?d._destroy(e):void l.parseInput(n,t,(e,r)=>this.destroyed?void 0:e?d._destroy(e):void(c=r.map(e=>e.getStream),l(n,t,(e,t)=>{if(!this.destroyed){if(e)return d._destroy(e);const n=this.get(t);n?d._destroy(new Error(`Cannot add duplicate torrent ${n.infoHash}`)):d._onTorrentId(t)}})))),d}remove(e,t){this._debug("remove");const n=this.get(e);if(!n)throw new Error(`No torrent with id ${e}`);this._remove(e,t)}_remove(e,t){const n=this.get(e);n&&(this.torrents.splice(this.torrents.indexOf(n),1),n.destroy(t))}address(){return this.listening?this._tcpPool?this._tcpPool.server.address():{address:"0.0.0.0",family:"IPv4",port:0}:null}destroy(e){if(this.destroyed)throw new Error("client already destroyed");this._destroy(null,e)}_destroy(e,t){this._debug("client destroy"),this.destroyed=!0;const n=this.torrents.map(e=>t=>{e.destroy(t)});this._tcpPool&&n.push(e=>{this._tcpPool.destroy(e)}),this.dht&&n.push(e=>{this.dht.destroy(e)}),p(n,t),e&&this.emit("error",e),this.torrents=[],this._tcpPool=null,this.dht=null}_onListening(){if(this._debug("listening"),this.listening=!0,this._tcpPool){const e=this._tcpPool.server.address();e&&(this.torrentPort=e.port)}this.emit("listening")}_debug(){const e=[].slice.call(arguments);e[0]=`[${this._debugId}] ${e[0]}`,c(...e)}}x.WEBRTC_SUPPORT=g.WEBRTC_SUPPORT,x.VERSION=k,t.exports=x}).call(this,e("_process"),"undefined"==typeof global?"undefined"==typeof self?"undefined"==typeof window?{}:window:self:global,e("buffer").Buffer)},{"./lib/tcp-pool":21,"./lib/torrent":5,"./package.json":124,_process:61,"bittorrent-dht/client":21,buffer:26,"create-torrent":29,debug:30,events:33,"load-ip-set":21,"parse-torrent":58,path:59,randombytes:69,"run-parallel":89,"simple-concat":92,"simple-peer":94,speedometer:98}]},{},[125])(125)});