File indexing completed on 2024-05-19 06:00:35

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t=this;if(!e.channel)return t.destroy(s("Data channel event is missing `channel` property","ERR_DATA_CHANNEL"));t._channel=e.channel,t._channel.binaryType="arraybuffer","number"==typeof t._channel.bufferedAmountLowThreshold&&(t._channel.bufferedAmountLowThreshold=65536),t.channelName=t._channel.label,t._channel.onmessage=function(e){t._onChannelMessage(e)},t._channel.onbufferedamountlow=function(){t._onChannelBufferedAmountLow()},t._channel.onopen=function(){t._onChannelOpen()},t._channel.onclose=function(){t._onChannelClose()},t._channel.onerror=function(e){t.destroy(s(e,"ERR_DATA_CHANNEL"))};var n=!1;t._closingInterval=setInterval(function(){t._channel&&"closing"===t._channel.readyState?(n&&t._onChannelClose(),n=!0):n=!1},5e3)},r.prototype._read=function(){},r.prototype._write=function(e,t,n){if(this.destroyed)return n(s("cannot write after peer is destroyed","ERR_DATA_CHANNEL"));if(this._connected){try{this.send(e)}catch(li){return this.destroy(s(li,"ERR_DATA_CHANNEL"))}this._channel.bufferedAmount>65536?(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},r.prototype._onFinish=function(){var e=this;function t(){setTimeout(function(){e.destroy()},1e3)}e.destroyed||(e._connected?t():e.once("connect",t))},r.prototype._startIceCompleteTimeout=function(){var e=this;e.destroyed||e._iceCompleteTimer||(e._debug("started iceComplete timeout"),e._iceCompleteTimer=setTimeout(function(){e._iceComplete||(e._iceComplete=!0,e._debug("iceComplete timeout completed"),e.emit("iceTimeout"),e.emit("_iceComplete"))},e.iceCompleteTimeout))},r.prototype._createOffer=function(){var e=this;e.destroyed||e._pc.createOffer(e.offerOptions).then(function(t){function n(){if(!e.destroyed){var n=e._pc.localDescription||t;e._debug("signal"),e.emit("signal",{type:n.type,sdp:n.sdp})}}e.destroyed||(e.trickle||e.allowHalfTrickle||(t.sdp=i(t.sdp)),t.sdp=e.sdpTransform(t.sdp),e._pc.setLocalDescription(t).then(function(){e._debug("createOffer success"),e.destroyed||(e.trickle||e._iceComplete?n():e.once("_iceComplete",n))}).catch(function(t){e.destroy(s(t,"ERR_SET_LOCAL_DESCRIPTION"))}))}).catch(function(t){e.destroy(s(t,"ERR_CREATE_OFFER"))})},r.prototype._requestMissingTransceivers=function(){var e=this;e._pc.getTransceivers&&e._pc.getTransceivers().forEach(t=>{t.mid||!t.sender.track||t.requested||(t.requested=!0,e.addTransceiver(t.sender.track.kind))})},r.prototype._createAnswer=function(){var e=this;e.destroyed||e._pc.createAnswer(e.answerOptions).then(function(t){function n(){if(!e.destroyed){var n=e._pc.localDescription||t;e._debug("signal"),e.emit("signal",{type:n.type,sdp:n.sdp}),e.initiator||e._requestMissingTransceivers()}}e.destroyed||(e.trickle||e.allowHalfTrickle||(t.sdp=i(t.sdp)),t.sdp=e.sdpTransform(t.sdp),e._pc.setLocalDescription(t).then(function(){e.destroyed||(e.trickle||e._iceComplete?n():e.once("_iceComplete",n))}).catch(function(t){e.destroy(s(t,"ERR_SET_LOCAL_DESCRIPTION"))}))}).catch(function(t){e.destroy(s(t,"ERR_CREATE_ANSWER"))})},r.prototype._onIceStateChange=function(){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(s("Ice connection failed.","ERR_ICE_CONNECTION_FAILURE")),"closed"===e&&this.destroy(s("Ice connection closed.","ERR_ICE_CONNECTION_CLOSED"))}},r.prototype.getStats=function(e){var t=this;function n(e){return"[object Array]"===Object.prototype.toString.call(e.values)&&e.values.forEach(function(t){Object.assign(e,t)}),e}0===t._pc.getStats.length?t._pc.getStats().then(function(t){var r=[];t.forEach(function(e){r.push(n(e))}),e(null,r)},function(t){e(t)}):t._isReactNativeWebrtc?t._pc.getStats(null,function(t){var r=[];t.forEach(function(e){r.push(n(e))}),e(null,r)},function(t){e(t)}):t._pc.getStats.length>0?t._pc.getStats(function(r){if(!t.destroyed){var i=[];r.result().forEach(function(e){var t={};e.names().forEach(function(n){t[n]=e.stat(n)}),t.id=e.id,t.type=e.type,t.timestamp=e.timestamp,i.push(n(t))}),e(null,i)}},function(t){e(t)}):e(null,[])},r.prototype._maybeReady=function(){var e=this;e._debug("maybeReady pc %s channel %s",e._pcReady,e._channelReady),!e._connected&&!e._connecting&&e._pcReady&&e._channelReady&&(e._connecting=!0,function t(){e.destroyed||e.getStats(function(n,r){if(!e.destroyed){n&&(r=[]);var i={},o={},a={},h=!1;if(r.forEach(function(e){"remotecandidate"!==e.type&&"remote-candidate"!==e.type||(i[e.id]=e),"localcandidate"!==e.type&&"local-candidate"!==e.type||(o[e.id]=e),"candidatepair"!==e.type&&"candidate-pair"!==e.type||(a[e.id]=e)}),r.forEach(function(e){"transport"===e.type&&e.selectedCandidatePairId&&u(a[e.selectedCandidatePairId]),("googCandidatePair"===e.type&&"true"===e.googActiveConnection||("candidatepair"===e.type||"candidate-pair"===e.type)&&e.selected)&&u(e)}),h||Object.keys(a).length&&!Object.keys(o).length){if(e._connecting=!1,e._connected=!0,e._chunk){try{e.send(e._chunk)}catch(n){return e.destroy(s(n,"ERR_DATA_CHANNEL"))}e._chunk=null,e._debug('sent chunk from "write before connect"');var c=e._cb;e._cb=null,c(null)}"number"!=typeof e._channel.bufferedAmountLowThreshold&&(e._interval=setInterval(function(){e._onInterval()},150),e._interval.unref&&e._interval.unref()),e._debug("connect"),e.emit("connect")}else setTimeout(t,100)}function u(t){h=!0;var n=o[t.localCandidateId];n&&(n.ip||n.address)?(e.localAddress=n.ip||n.address,e.localPort=Number(n.port)):n&&n.ipAddress?(e.localAddress=n.ipAddress,e.localPort=Number(n.portNumber)):"string"==typeof t.googLocalAddress&&(n=t.googLocalAddress.split(":"),e.localAddress=n[0],e.localPort=Number(n[1])),e.localAddress&&(e.localFamily=e.localAddress.includes(":")?"IPv6":"IPv4");var r=i[t.remoteCandidateId];r&&(r.ip||r.address)?(e.remoteAddress=r.ip||r.address,e.remotePort=Number(r.port)):r&&r.ipAddress?(e.remoteAddress=r.ipAddress,e.remotePort=Number(r.portNumber)):"string"==typeof t.googRemoteAddress&&(r=t.googRemoteAddress.split(":"),e.remoteAddress=r[0],e.remotePort=Number(r[1])),e.remoteAddress&&(e.remoteFamily=e.remoteAddress.includes(":")?"IPv6":"IPv4"),e._debug("connect local: %s:%s remote: %s:%s",e.localAddress,e.localPort,e.remoteAddress,e.remotePort)}})}())},r.prototype._onInterval=function(){!this._cb||!this._channel||this._channel.bufferedAmount>65536||this._onChannelBufferedAmountLow()},r.prototype._onSignalingStateChange=function(){var e=this;e.destroyed||("stable"!==e._pc.signalingState||e._firstStable||(e._isNegotiating=!1,e._debug("flushing sender queue",e._sendersAwaitingStable),e._sendersAwaitingStable.forEach(function(t){e._pc.removeTrack(t),e._queuedNegotiation=!0}),e._sendersAwaitingStable=[],e._queuedNegotiation&&(e._debug("flushing negotiation queue"),e._queuedNegotiation=!1,e._needsNegotiation()),e._debug("negotiate"),e.emit("negotiate")),e._firstStable=!1,e._debug("signalingStateChange %s",e._pc.signalingState),e.emit("signalingStateChange",e._pc.signalingState))},r.prototype._onIceCandidate=function(e){this.destroyed||(e.candidate&&this.trickle?this.emit("signal",{candidate:{candidate:e.candidate.candidate,sdpMLineIndex:e.candidate.sdpMLineIndex,sdpMid:e.candidate.sdpMid}}):e.candidate||this._iceComplete||(this._iceComplete=!0,this.emit("_iceComplete")),e.candidate&&this._startIceCompleteTimeout())},r.prototype._onChannelMessage=function(t){if(!this.destroyed){var n=t.data;n instanceof ArrayBuffer&&(n=e.from(n)),this.push(n)}},r.prototype._onChannelBufferedAmountLow=function(){if(!this.destroyed&&this._cb){this._debug("ending backpressure: bufferedAmount %d",this._channel.bufferedAmount);var e=this._cb;this._cb=null,e(null)}},r.prototype._onChannelOpen=function(){this._connected||this.destroyed||(this._debug("on channel open"),this._channelReady=!0,this._maybeReady())},r.prototype._onChannelClose=function(){this.destroyed||(this._debug("on channel close"),this.destroy())},r.prototype._onTrack=function(e){var t=this;t.destroyed||e.streams.forEach(function(n){t._debug("on track"),t.emit("track",e.track,n),t._remoteTracks.push({track:e.track,stream:n}),t._remoteStreams.some(function(e){return e.id===n.id})||(t._remoteStreams.push(n),setTimeout(function(){t.emit("stream",n)},0))})},r.prototype._debug=function(){var e=[].slice.call(arguments);e[0]="["+this._id+"] "+e[0],t.apply(null,e)}}).call(this,u({}).Buffer);var An,Rn=1,Ln=function(){Rn=Rn+1&65535},Bn=function(e){An||(An=setInterval(Ln,250)).unref&&An.unref();var t=4*(e||5),n=[0],r=1,i=Rn-1&65535;return function(e){var s=Rn-i&65535;for(s>t&&(s=t),i=Rn;s--;)r===t&&(r=0),n[r]=n[0===r?t-1:r-1],r++;e&&(n[r-1]+=e);var o=n[r-1],a=n.length<t?0:n[r===t?0:r];return n.length<4?o:4*(o-a)/n.length}},Un={};const On=/^\[?([^\]]+)\]?:(\d+)$/;let Mn={},Pn=0;(Un=function(e){if(1e5===Pn&&Un.reset(),!Mn[e]){const t=On.exec(e);if(!t)throw new Error(`invalid addr: ${e}`);Mn[e]=[t[1],Number(t[2])],Pn+=1}return Mn[e]}).reset=function(){Mn={},Pn=0};var Nn={exports:{}};function jn(e){let t=e>>3;return e%8!=0&&t++,t}Nn.exports=class{constructor(e=0,t){const n=null!=t&&t.grow;this.grow=n&&isFinite(n)&&jn(n)||n||0,this.buffer="number"==typeof e?new Uint8Array(jn(e)):e}get(e){const t=e>>3;return t<this.buffer.length&&!!(this.buffer[t]&128>>e%8)}set(e,t=!0){const n=e>>3;if(t){if(this.buffer.length<n+1){const e=Math.max(n+1,Math.min(2*this.buffer.length,this.grow));if(e<=this.grow){const t=new Uint8Array(e);t.set(this.buffer),this.buffer=t}}this.buffer[n]|=128>>e%8}else n<this.buffer.length&&(this.buffer[n]&=~(128>>e%8))}},Nn=Nn.exports;var Hn=class extends Ze.Writable{constructor(e,t,n={}){if(super(n),!e||!e.put||!e.get)throw new Error("First argument must be an abstract-chunk-store compliant store");if(!(t=Number(t)))throw new Error("Second argument must be a chunk length");this._blockstream=new Qe(t,{zeroPadding:!1}),this._outstandingPuts=0;let r=0;this._blockstream.on("data",t=>{this.destroyed||(this._outstandingPuts+=1,e.put(r,t,()=>{this._outstandingPuts-=1,0===this._outstandingPuts&&"function"==typeof this._finalCb&&(this._finalCb(null),this._finalCb=null)}),r+=1)}).on("error",e=>{this.destroy(e)})}_write(e,t,n){this._blockstream.write(e,t,n)}_final(e){this._blockstream.end(),this._blockstream.once("end",()=>{0===this._outstandingPuts?e(null):this._finalCb=e})}destroy(e){this.destroyed||(this.destroyed=!0,e&&this.emit("error",e),this.emit("close"))}},Dn={};(function(e){Dn.DEFAULT_ANNOUNCE_PEERS=50,Dn.binaryToHex=function(t){return"string"!=typeof t&&(t=String(t)),e.from(t,"binary").toString("hex")},Dn.hexToBinary=function(t){return"string"!=typeof t&&(t=String(t)),e.from(t,"hex").toString("binary")},Object.assign(Dn,te)}).call(this,u({}).Buffer);var qn={};(function(e,t){const n=Nt("simple-websocket"),r="function"!=typeof te?WebSocket:te,i=65536;class s extends Ze.Duplex{constructor(t={}){if("string"==typeof t&&(t={url:t}),super(t=Object.assign({allowHalfOpen:!1},t)),null==t.url&&null==t.socket)throw new Error("Missing required `url` or `socket` option");if(null!=t.url&&null!=t.socket)throw new Error("Must specify either `url` or `socket` option, not both");if(this._id=Tn(4).toString("hex").slice(0,7),this._debug("new websocket: %o",t),this.connected=!1,this.destroyed=!1,this._chunk=null,this._cb=null,this._interval=null,t.socket)this.url=t.socket.url,this._ws=t.socket,this.connected=t.socket.readyState===r.OPEN;else{this.url=t.url;try{this._ws="function"==typeof te?new r(t.url,t):new r(t.url)}catch(li){return void e.nextTick(()=>this.destroy(li))}}this._ws.binaryType="arraybuffer",this._ws.onopen=(()=>{this._onOpen()}),this._ws.onmessage=(e=>{this._onMessage(e)}),this._ws.onclose=(()=>{this._onClose()}),this._ws.onerror=(()=>{this.destroy(new Error("connection error to "+this.url))}),this._onFinishBound=(()=>{this._onFinish()}),this.once("finish",this._onFinishBound)}send(e){this._ws.send(e)}destroy(e){this._destroy(e,()=>{})}_destroy(e,t){if(!this.destroyed){if(this._debug("destroy (error: %s)",e&&(e.message||e)),this.readable=this.writable=!1,this._readableState.ended||this.push(null),this._writableState.finished||this.end(),this.connected=!1,this.destroyed=!0,clearInterval(this._interval),this._interval=null,this._chunk=null,this._cb=null,this._onFinishBound&&this.removeListener("finish",this._onFinishBound),this._onFinishBound=null,this._ws){const t=this._ws,n=()=>{t.onclose=null};if(t.readyState===r.CLOSED)n();else try{t.onclose=n,t.close()}catch(e){n()}t.onopen=null,t.onmessage=null,t.onerror=(()=>{})}if(this._ws=null,e){if("undefined"!=typeof DOMException&&e instanceof DOMException){const t=e.code;(e=new Error(e.message)).code=t}this.emit("error",e)}this.emit("close"),t()}}_read(){}_write(e,t,n){if(this.destroyed)return n(new Error("cannot write after socket is destroyed"));if(this.connected){try{this.send(e)}catch(li){return this.destroy(li)}"function"!=typeof te&&this._ws.bufferedAmount>i?(this._debug("start backpressure: bufferedAmount %d",this._ws.bufferedAmount),this._cb=n):n(null)}else this._debug("write before connect"),this._chunk=e,this._cb=n}_onFinish(){if(this.destroyed)return;const e=()=>{setTimeout(()=>this.destroy(),1e3)};this.connected?e():this.once("connect",e)}_onMessage(e){if(this.destroyed)return;let n=e.data;n instanceof ArrayBuffer&&(n=t.from(n)),this.push(n)}_onOpen(){if(!this.connected&&!this.destroyed){if(this.connected=!0,this._chunk){try{this.send(this._chunk)}catch(li){return this.destroy(li)}this._chunk=null,this._debug('sent chunk from "write before connect"');const e=this._cb;this._cb=null,e(null)}"function"!=typeof te&&(this._interval=setInterval(()=>this._onInterval(),150),this._interval.unref&&this._interval.unref()),this._debug("connect"),this.emit("connect")}}_onInterval(){if(!this._cb||!this._ws||this._ws.bufferedAmount>i)return;this._debug("ending backpressure: bufferedAmount %d",this._ws.bufferedAmount);const e=this._cb;this._cb=null,e(null)}_onClose(){this.destroyed||(this._debug("on close"),this.destroy())}_debug(){const e=[].slice.call(arguments);e[0]="["+this._id+"] "+e[0],n.apply(null,e)}}s.WEBSOCKET_SUPPORT=!!r,qn=s}).call(this,ce,u({}).Buffer);var Fn=class extends d{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())}},Wn={};const zn=Nt("bittorrent-tracker:websocket-tracker"),$n={},Vn=1e4,Gn=18e5,Kn=12e4,Yn=5e4;class Jn extends Fn{constructor(e,t,n){super(e,t),zn("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=Math.min(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={action:"scrape",info_hash:Array.isArray(e.infoHash)&&e.infoHash.length>0?e.infoHash.map(e=>e.toString("binary")):e.infoHash&&e.infoHash.toString("binary")||this.client._infoHashBinary};this._send(t)}destroy(e=Xn){if(this.destroyed)return e(null);this.destroyed=!0,clearInterval(this.interval),clearTimeout(this.reconnectTimer);for(const i in this.peers){const e=this.peers[i];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,$n[this.announceUrl]&&($n[this.announceUrl].consumers-=1),$n[this.announceUrl].consumers>0)return e();let t=$n[this.announceUrl];if(delete $n[this.announceUrl],t.on("error",Xn),t.once("close",e),!this.expectingResponse)return r();var n=setTimeout(r,Dn.DESTROY_TIMEOUT);function r(){n&&(clearTimeout(n),n=null),t.removeListener("data",r),t.destroy(),t=null}t.once("data",r)}_openSocket(){this.destroyed=!1,this.peers||(this.peers={}),this._onSocketConnectBound=(()=>{this._onSocketConnect()}),this._onSocketErrorBound=(e=>{this._onSocketError(e)}),this._onSocketDataBound=(e=>{this._onSocketData(e)}),this._onSocketCloseBound=(()=>{this._onSocketClose()}),this.socket=$n[this.announceUrl],this.socket?($n[this.announceUrl].consumers+=1,this.socket.connected&&this._onSocketConnectBound()):(this.socket=$n[this.announceUrl]=new qn(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(li){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 zn("ignoring websocket data from %s for %s (looking for %s: reused socket)",this.announceUrl,Dn.binaryToHex(e.info_hash),this.client.infoHash);if(e.peer_id&&e.peer_id===this.client._peerIdBinary)return;zn("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 i=e["tracker id"];if(i&&(this._trackerId=i),null!=e.complete){const t=Object.assign({},e,{announce:this.announceUrl,infoHash:Dn.binaryToHex(e.info_hash)});this.client.emit("update",t)}let s;if(e.offer&&e.peer_id&&(zn("creating peer (from remote offer)"),(s=this._createPeer()).id=Dn.binaryToHex(e.peer_id),s.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)}),s.signal(e.offer),this.client.emit("peer",s)),e.answer&&e.peer_id){const t=Dn.binaryToHex(e.offer_id);(s=this.peers[t])?(s.id=Dn.binaryToHex(e.peer_id),s.signal(e.answer),this.client.emit("peer",s),clearTimeout(s.trackerTimeout),s.trackerTimeout=null,delete this.peers[t]):zn(`got unexpected answer: ${JSON.stringify(e.answer)}`)}}_onScrapeResponse(e){e=e.files||{};const t=Object.keys(e);0!==t.length?t.forEach(t=>{const n=Object.assign(e[t],{announce:this.announceUrl,infoHash:Dn.binaryToHex(t)});this.client.emit("scrape",n)}):this.client.emit("warning",new Error("invalid scrape 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window.Blob(n)),i.download=r,i.click()}))},Re(mr,Ze.Writable),mr.prototype._onSourceOpen=function(){this.destroyed||(this._mediaSource.removeEventListener("sourceopen",this._openHandler),this._createSourceBuffer())},mr.prototype.destroy=function(e){this.destroyed||(this.destroyed=!0,this._allStreams.splice(this._allStreams.indexOf(this),1),this._mediaSource.removeEventListener("sourceopen",this._openHandler),this._elem.removeEventListener("timeupdate",this._flowHandler),this._sourceBuffer&&(this._sourceBuffer.removeEventListener("updateend",this._flowHandler),this._sourceBuffer.removeEventListener("error",this._errorHandler),"open"===this._mediaSource.readyState&&this._sourceBuffer.abort()),e&&this.emit("error",e),this.emit("close"))},mr.prototype._createSourceBuffer=function(){if(!this.destroyed)if(fr.isTypeSupported(this._type)){if(this._sourceBuffer=this._mediaSource.addSourceBuffer(this._type),this._sourceBuffer.addEventListener("updateend",this._flowHandler),this._sourceBuffer.addEventListener("error",this._errorHandler),this._cb){var e=this._cb;this._cb=null,e()}}else this.destroy(new Error("The provided type is not supported"))},mr.prototype._write=function(e,t,n){var r=this;if(!r.destroyed)if(r._sourceBuffer){if(r._sourceBuffer.updating)return n(new Error("Cannot append buffer while source buffer updating"));var i=function(e){if(e instanceof Uint8Array){if(0===e.byteOffset&&e.byteLength===e.buffer.byteLength)return e.buffer;if("function"==typeof e.buffer.slice)return e.buffer.slice(e.byteOffset,e.byteOffset+e.byteLength)}if(dr.isBuffer(e)){for(var t=new Uint8Array(e.length),n=e.length,r=0;r<n;r++)t[r]=e[r];return t.buffer}throw new Error("Argument must be a Buffer")}(e);r._wrapper._debug&&r._debugBuffers.push(i);try{r._sourceBuffer.appendBuffer(i)}catch(li){return void r.destroy(li)}r._cb=n}else r._cb=function(i){if(i)return n(i);r._write(e,t,n)}},mr.prototype._flow=function(){if(!this.destroyed&&this._sourceBuffer&&!this._sourceBuffer.updating&&!("open"===this._mediaSource.readyState&&this._getBufferDuration()>this._bufferDuration)&&this._cb){var e=this._cb;this._cb=null,e()}},mr.prototype._getBufferDuration=function(){for(var e=this._sourceBuffer.buffered,t=this._elem.currentTime,n=-1,r=0;r<e.length;r++){var i=e.start(r),s=e.end(r)+0;if(i>t)break;(n>=0||t<=s)&&(n=s)}var o=n-t;return o<0&&(o=0),o};var _r=function(e,t){if(null!=t&&"string"!=typeof t)throw new Error("Invalid mimetype, expected string.");return new Promise((n,r)=>{const i=[];e.on("data",e=>i.push(e)).once("end",()=>{const e=null!=t?new Blob(i,{type:t}):new Blob(i);n(e)}).once("error",r)})},yr=async function(e,t){const n=await _r(e,t);return URL.createObjectURL(n)},br={};(function(e){var t=function(){try{if(!e.isEncoding("latin1"))return!1;var t=e.alloc?e.alloc(4):new e(4);return 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t={3:"ESDescriptor",4:"DecoderConfigDescriptor",5:"DecoderSpecificInfo",6:"SLConfigDescriptor"};Sr.Descriptor={},Sr.Descriptor.decode=function(n,r,i){var s,o,a=n.readUInt8(r),h=r+1,c=0;do{c=c<<7|127&(s=n.readUInt8(h++))}while(128&s);var u=t[a];return(o=Sr[u]?Sr[u].decode(n,h,i):{buffer:e.from(n.slice(h,h+c))}).tag=a,o.tagName=u,o.length=h-r+c,o.contentsLen=c,o},Sr.DescriptorArray={},Sr.DescriptorArray.decode=function(e,n,r){for(var i=n,s={};i+2<=r;){var o=Sr.Descriptor.decode(e,i,r);i+=o.length,s[t[o.tag]||"Descriptor"+o.tag]=o}return s},Sr.ESDescriptor={},Sr.ESDescriptor.decode=function(e,t,n){var r=e.readUInt8(t+2),i=t+3;return 128&r&&(i+=2),64&r&&(i+=e.readUInt8(i)+1),32&r&&(i+=2),Sr.DescriptorArray.decode(e,i,n)},Sr.DecoderConfigDescriptor={},Sr.DecoderConfigDescriptor.decode=function(e,t,n){var r=e.readUInt8(t),i=Sr.DescriptorArray.decode(e,t+13,n);return i.oti=r,i}}).call(this,u({}).Buffer);var Cr={};(function(e){var n=t({}),r=e.alloc(0);class i extends 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new Error("this function can only be called once after 'box' is emitted");var t=this._headers;this._headers=null,this._buffer(t.contentLen,r=>{var i=n.decodeWithoutHeaders(t,r);e(i),this._pending--,this._kick()})}ignore(){if(!this._headers)throw new Error("this function can only be called once after 'box' is emitted");var e=this._headers;this._headers=null,this._missing=e.contentLen,0===this._missing&&(this._ignoreEmpty=!0),this._cb=(()=>{this._pending--,this._kick()})}_kick(){if(!this._pending&&(this._buf||this._str||this._readBox(),this._writeBuffer)){var e=this._writeCb,t=this._writeBuffer;this._writeBuffer=null,this._writeCb=null,this._write(t,null,e)}}}}).call(this,u({}).Buffer);var xr={};(function(e,n){var r=t({});function i(){}class s extends Ze.PassThrough{constructor(e){super(),this._parent=e,this.destroyed=!1}destroy(e){this.destroyed||(this.destroyed=!0,this._parent.destroy(e),e&&this.emit("error",e),this.emit("close"))}}xr=class extends Ze.Readable{constructor(e){super(e),this.destroyed=!1,this._finalized=!1,this._reading=!1,this._stream=null,this._drain=null,this._want=!1,this._onreadable=(()=>{this._want&&(this._want=!1,this._read())}),this._onend=(()=>{this._stream=null})}mdat(e,t){this.mediaData(e,t)}mediaData(e,t){var n=new s(this);return this.box({type:"mdat",contentLength:e,encodeBufferLen:8,stream:n},t),n}box(t,s){if(s||(s=i),this.destroyed)return s(new Error("Encoder is destroyed"));var o;if(t.encodeBufferLen&&(o=n.alloc(t.encodeBufferLen)),t.stream)t.buffer=null,o=r.encode(t,o),this.push(o),this._stream=t.stream,this._stream.on("readable",this._onreadable),this._stream.on("end",this._onend),this._stream.on("end",s),this._forward();else{if(o=r.encode(t,o),this.push(o))return e.nextTick(s);this._drain=s}}destroy(e){if(!this.destroyed){if(this.destroyed=!0,this._stream&&this._stream.destroy&&this._stream.destroy(),this._stream=null,this._drain){var t=this._drain;this._drain=null,t(e)}e&&this.emit("error",e),this.emit("close")}}finalize(){this._finalized=!0,this._stream||this._drain||this.push(null)}_forward(){if(this._stream)for(;!this.destroyed;){var e=this._stream.read();if(!e)return void(this._want=!!this._stream);if(!this.push(e))return}}_read(){if(!this._reading&&!this.destroyed){if(this._reading=!0,this._stream&&this._forward(),this._drain){var e=this._drain;this._drain=null,e()}this._reading=!1,this._finalized&&this.push(null)}}}}).call(this,ce,u({}).Buffer);var Tr={decode:e=>new Cr(e),encode:e=>new xr(e)};const{Writable:Ir,PassThrough:Ar}=Ze;var Rr=class extends Ir{constructor(e,t={}){super(t),this.destroyed=!1,this._queue=[],this._position=e||0,this._cb=null,this._buffer=null,this._out=null}_write(e,t,n){let r=!0;for(;;){if(this.destroyed)return;if(0===this._queue.length)return this._buffer=e,void(this._cb=n);this._buffer=null;var i=this._queue[0];const t=Math.max(i.start-this._position,0),s=i.end-this._position;if(t>=e.length)return this._position+=e.length,n(null);let o;if(s>e.length){this._position+=e.length,o=0===t?e:e.slice(t),r=i.stream.write(o)&&r;break}this._position+=s,o=0===t&&s===e.length?e:e.slice(t,s),r=i.stream.write(o)&&r,i.last&&i.stream.end(),e=e.slice(s),this._queue.shift()}r?n(null):i.stream.once("drain",n.bind(null,null))}slice(e){if(this.destroyed)return null;Array.isArray(e)||(e=[e]);const t=new Ar;return e.forEach((n,r)=>{this._queue.push({start:n.start,end:n.end,stream:t,last:r===e.length-1})}),this._buffer&&this._write(this._buffer,null,this._cb),t}destroy(e){this.destroyed||(this.destroyed=!0,e&&this.emit("error",e))}},Lr={};(function(e){const n=t({});class r{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]}}Lr=class extends d{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=Tr.decode();const n=this._file.createReadStream({start:e});n.pipe(this._decoder);const r=i=>{"moov"===i.type?(this._decoder.removeListener("box",r),this._decoder.decode(e=>{n.destroy();try{this._processMoov(e)}catch(li){li.message=`Cannot parse mp4 file: ${li.message}`,this.emit("error",li)}})):i.length<4096?(t+=i.length,this._decoder.ignore()):(this._decoder.removeListener("box",r),t+=i.length,n.destroy(),this._decoder.destroy(),this._findMoov(e+t))};this._decoder.on("box",r)}_processMoov(t){const i=t.traks;this._tracks=[],this._hasVideo=!1,this._hasAudio=!1;for(let e=0;e<i.length;e++){const n=i[e],o=n.mdia.minf.stbl,a=o.stsd.entries[0],h=n.mdia.hdlr.handlerType;let c,u;if("vide"===h&&"avc1"===a.type){if(this._hasVideo)continue;this._hasVideo=!0,c="avc1",a.avcC&&(c+=`.${a.avcC.mimeCodec}`),u=`video/mp4; codecs="${c}"`}else{if("soun"!==h||"mp4a"!==a.type)continue;if(this._hasAudio)continue;this._hasAudio=!0,c="mp4a",a.esds&&a.esds.mimeCodec&&(c+=`.${a.esds.mimeCodec}`),u=`audio/mp4; codecs="${c}"`}const d=[];let l=0,f=0,p=0,g=0,m=0,_=0;const y=new r(o.stts.entries);let b=null;o.ctts&&(b=new r(o.ctts.entries));let w=0;for(;;){var s=o.stsc.entries[m];const e=o.stsz.entries[l],t=y.value.duration,n=b?b.value.compositionOffset:0;let r=!0;o.stss&&(r=o.stss.entries[w]===l+1);const i=o.stco||o.co64;if(d.push({size:e,duration:t,dts:_,presentationOffset:n,sync:r,offset:g+i.entries[p]}),++l>=o.stsz.entries.length)break;if(g+=e,++f>=s.samplesPerChunk){f=0,g=0,p++;const e=o.stsc.entries[m+1];e&&p+1>=e.firstChunk&&m++}_+=t,y.inc(),b&&b.inc(),r&&w++}n.mdia.mdhd.duration=0,n.tkhd.duration=0;const v=s.sampleDescriptionId,E={type:"moov",mvhd:t.mvhd,traks:[{tkhd:n.tkhd,mdia:{mdhd:n.mdia.mdhd,hdlr:n.mdia.hdlr,elng:n.mdia.elng,minf:{vmhd:n.mdia.minf.vmhd,smhd:n.mdia.minf.smhd,dinf:n.mdia.minf.dinf,stbl:{stsd:o.stsd,stts:{version:0,flags:0,entries:[]},ctts:{version:0,flags:0,entries:[]},stsc:{version:0,flags:0,entries:[]},stsz:{version:0,flags:0,entries:[]},stco:{version:0,flags:0,entries:[]},stss:{version:0,flags:0,entries:[]}}}}}],mvex:{mehd:{fragmentDuration:t.mvhd.duration},trexs:[{trackId:n.tkhd.trackId,defaultSampleDescriptionIndex:v,defaultSampleDuration:0,defaultSampleSize:0,defaultSampleFlags:0}]}};this._tracks.push({fragmentSequence:1,trackId:n.tkhd.trackId,timeScale:n.mdia.mdhd.timeScale,samples:d,currSample:null,currTime:null,moov:E,mime:u})}if(0===this._tracks.length)return void this.emit("error",new Error("no playable tracks"));t.mvhd.duration=0,this._ftyp={type:"ftyp",brand:"iso5",brandVersion:0,compatibleBrands:["iso5"]};const o=n.encode(this._ftyp),a=this._tracks.map(t=>{const r=n.encode(t.moov);return{mime:t.mime,init:e.concat([o,r])}});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 i=n.outStream=Tr.encode(),s=this._generateFragment(r,e);if(!s)return i.finalize();(-1===t||s.ranges[0].start<t)&&(t=s.ranges[0].start);const o=e=>{i.destroyed||i.box(e.moof,t=>{if(t)return this.emit("error",t);i.destroyed||n.inStream.slice(e.ranges).pipe(i.mediaData(e.length,e=>{if(e)return this.emit("error",e);if(i.destroyed)return;const t=this._generateFragment(r);if(!t)return i.finalize();o(t)}))})};o(s)}),t>=0){const e=this._fileStream=this._file.createReadStream({start:t});this._tracks.forEach(n=>{n.inStream=new Rr(t,{highWaterMark:1e7}),e.pipe(n.inStream)})}return this._tracks.map(e=>e.outStream)}_findSampleBefore(e,t){const n=this._tracks[e],r=Math.floor(n.timeScale*t);let i=function(e,t,n,r,i){var s,o;if(void 0===r)r=0;else if((r|=0)<0||r>=e.length)throw new RangeError("invalid lower bound");if(void 0===i)i=e.length-1;else if((i|=0)<r||i>=e.length)throw new RangeError("invalid upper bound");for(;r<=i;)if((o=+n(e[s=r+(i-r>>>1)],t,s,e))<0)r=s+1;else{if(!(o>0))return s;i=s-1}return~r}(n.samples,r,(e,t)=>e.dts+e.presentationOffset-t);for(-1===i?i=0:i<0&&(i=-i-2);!n.samples[i].sync;)i--;return i}_generateFragment(e,t){const n=this._tracks[e];let r;if((r=void 0!==t?this._findSampleBefore(e,t):n.currSample)>=n.samples.length)return null;const i=n.samples[r].dts;let s=0;const o=[];for(var a=r;a<n.samples.length;a++){const e=n.samples[a];if(e.sync&&e.dts-i>=1*n.timeScale)break;s+=e.size;const t=o.length-1;t<0||o[t].end!==e.offset?o.push({start:e.offset,end:e.offset+e.size}):o[t].end+=e.size}return n.currSample=a,{moof:this._generateMoof(e,r,a),ranges:o,length:s}}_generateMoof(e,t,r){const i=this._tracks[e],s=[];let o=0;for(let n=t;n<r;n++){const e=i.samples[n];e.presentationOffset<0&&(o=1),s.push({sampleDuration:e.duration,sampleSize:e.size,sampleFlags:e.sync?33554432:16842752,sampleCompositionTimeOffset:e.presentationOffset})}const a={type:"moof",mfhd:{sequenceNumber:i.fragmentSequence++},trafs:[{tfhd:{flags:131072,trackId:i.trackId},tfdt:{baseMediaDecodeTime:i.samples[t].dts},trun:{flags:3841,dataOffset:8,entries:s,version:o}}]};return a.trafs[0].trun.dataOffset+=n.encodingLength(a),a}}}).call(this,u({}).Buffer);var Br={};function Ur(e,t,n={}){if(!(this instanceof Ur))return console.warn("don't invoked VideoStream without 'new'"),new Ur(e,t,n);this.detailedError=null,this._elem=t,this._elemWrapper=new lr(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)}Ur.prototype={_createMuxer(){this._muxer=new Lr(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],ar(t.muxed,t.mediaSource)};t.initFlushed?r():t.onInitFlushed=(e=>{e?this._elemWrapper.error(e):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="")}},Br=Ur;var Or={render:function(e,t,n,r){"function"==typeof n&&(r=n,n={}),n||(n={}),r||(r=function(){}),Gr(e),Kr(n),"string"==typeof t&&(t=document.querySelector(t)),$r(e,function(r){if(t.nodeName!==r.toUpperCase()){var i=et.extname(e.name).toLowerCase();throw new Error('Cannot render "'+i+'" inside a "'+t.nodeName.toLowerCase()+'" element, expected 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0;const{pieces:e,bitfield:t,pieceLength:n}=this._torrent,{_startPiece:r,_endPiece:i}=this,s=e[r],o=this.offset%n;let a=t.get(r)?n-o:Math.max(n-o-s.missing,0);for(let h=r+1;h<=i;++h)t.get(h)?a+=n:a+=n-e[h].missing;return Math.min(a,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(t){if(0===this.length){const t=new n;return e.nextTick(()=>{t.end()}),t}const r=new Zr(this,t);return this._torrent.select(r._startPiece,r._endPiece,!0,()=>{r._notify()}),or(r,()=>{this._destroyed||this._torrent.destroyed||this._torrent.deselect(r._startPiece,r._endPiece,!0)}),r}getBuffer(e){Jr(this.createReadStream(),this.length,e)}getBlob(e){if("undefined"==typeof window)throw new Error("browser-only 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u{constructor(e,t,n,r){this.piece=e,this.offset=t,this.length=n,this.callback=r}}ti=class extends Ze.Duplex{constructor(){super(),this._debugId=Tn(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 Nn(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=Bn(),this.downloadSpeed=Bn(),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 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t?(t=t.toLowerCase(),s=e.from(t,"hex")):t=(s=t).toString("hex"),"string"==typeof r?o=e.from(r,"hex"):r=(o=r).toString("hex"),20!==s.length||20!==o.length)throw new Error("infoHash and peerId MUST have length 20");this._debug("handshake i=%s p=%s exts=%o",t,r,i);const a=e.from(h);a[5]|=16,i&&i.dht&&(a[7]|=1),this._push(e.concat([n,a,s,o])),this._handshakeSent=!0,this.peerExtensions.extended&&!this._extendedHandshakeSent&&this._sendExtendedHandshake()}_sendExtendedHandshake(){const e=Object.assign({},this.extendedHandshake);e.m={};for(const t in this.extendedMapping){const n=this.extendedMapping[t];e.m[n]=Number(t)}this.extended(0,Z.encode(e)),this._extendedHandshakeSent=!0}choke(){if(!this.amChoking){for(this.amChoking=!0,this._debug("choke");this.peerRequests.length;)this.peerRequests.pop();this._push(i)}}unchoke(){this.amChoking&&(this.amChoking=!1,this._debug("unchoke"),this._push(s))}interested(){this.amInterested||(this.amInterested=!0,this._debug("interested"),this._push(o))}uninterested(){this.amInterested&&(this.amInterested=!1,this._debug("uninterested"),this._push(a))}have(e){this._debug("have %d",e),this._message(4,[e],null)}bitfield(t){this._debug("bitfield"),e.isBuffer(t)||(t=t.buffer),this._message(5,[],t)}request(e,t,n,r){return r||(r=(()=>{})),this._finished?r(new Error("wire is closed")):this.peerChoking?r(new Error("peer is choking")):(this._debug("request index=%d offset=%d length=%d",e,t,n),this.requests.push(new u(e,t,n,r)),this._updateTimeout(),void 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(t){this._debug("port %d",t);const n=e.from(c);n.writeUInt16BE(t,5),this._push(n)}extended(t,n){if(this._debug("extended ext=%s",t),"string"==typeof t&&this.peerExtendedMapping[t]&&(t=this.peerExtendedMapping[t]),"number"!=typeof t)throw new Error(`Unrecognized extension: ${t}`);{const r=e.from([t]),i=e.isBuffer(n)?n:Z.encode(n);this._message(20,[],e.concat([r,i]))}}_read(){}_message(t,n,r){const i=r?r.length:0,s=e.allocUnsafe(5+4*n.length);s.writeUInt32BE(s.length+i-4,0),s[4]=t;for(let e=0;e<n.length;e++)s.writeUInt32BE(n[e],5+4*e);this._push(s),r&&this._push(r)}_push(e){if(!this._finished)return this.push(e)}_onKeepAlive(){this._debug("got keep-alive"),this.emit("keep-alive")}_onHandshake(e,t,n){const r=e.toString("hex"),i=t.toString("hex");let s;for(s in this._debug("got handshake i=%s p=%s exts=%o",r,i,n),this.peerId=i,this.peerIdBuffer=t,this.peerExtensions=n,this.emit("handshake",r,i,n),this._ext)this._ext[s].onHandshake(r,i,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 Nn(e),this._debug("got bitfield"),this.emit("bitfield",this.peerPieces)}_onRequest(e,t,n){if(this.amChoking)return;this._debug("got request index=%d offset=%d length=%d",e,t,n);const r=(r,s)=>{if(i===this._pull(this.peerRequests,e,t,n))return r?this._debug("error satisfying request index=%d offset=%d length=%d (%s)",e,t,n,r.message):void this.piece(e,t,s)};var i=new u(e,t,n,r);this.peerRequests.push(i),this.emit("request",e,t,n,r)}_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,n;try{e=Z.decode(t)}catch(li){this._debug("ignoring invalid extended handshake: %s",li.message||li)}if(!e)return;if(this.peerExtendedHandshake=e,"object"==typeof e.m)for(n in e.m)this.peerExtendedMapping[n]=Number(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(t,n,r){for(this._bufferSize+=t.length,this._buffer.push(t);this._bufferSize>=this._parserSize;){const t=1===this._buffer.length?this._buffer[0]:e.concat(this._buffer);this._bufferSize-=this._parserSize,this._buffer=this._bufferSize?[t.slice(this._parserSize)]:[],this._parser(t.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);t>0?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);if("BitTorrent protocol"!==n.toString())return this._debug("Error: wire not speaking BitTorrent protocol (%s)",n.toString()),void this.end();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)})})}_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}] ${e[0]}`,t(...e)}_pull(e,t,n,r){for(let i=0;i<e.length;i++){const s=e[i];if(s.piece===t&&s.offset===n&&s.length===r)return ei(e,i),s}return null}}}).call(this,u({}).Buffer);var ni="0.107.16",ri={};(function(e){const t=Nt("webtorrent:webconn"),n=ni;ri=class extends ti{constructor(e,t){super(),this.url=e,this.webPeerId=Rt.sync(e),this._torrent=t,this._init()}_init(){this.setKeepAlive(!0),this.once("handshake",(e,t)=>{if(this.destroyed)return;this.handshake(e,this.webPeerId);const n=this._torrent.pieces.length,r=new Nn(n);for(let i=0;i<=n;i++)r.set(i,!0);this.bitfield(r)}),this.once("interested",()=>{t("interested"),this.unchoke()}),this.on("uninterested",()=>{t("uninterested")}),this.on("choke",()=>{t("choke")}),this.on("unchoke",()=>{t("unchoke")}),this.on("bitfield",()=>{t("bitfield")}),this.on("request",(e,n,r,i)=>{t("request pieceIndex=%d offset=%d length=%d",e,n,r),this.httpRequest(e,n,r,i)})}httpRequest(r,i,s,o){const a=r*this._torrent.pieceLength+i,h=a+s-1,c=this._torrent.files;let u;if(c.length<=1)u=[{url:this.url,start:a,end:h}];else{const e=c.filter(e=>e.offset<=h&&e.offset+e.length>a);if(e.length<1)return o(new Error("Could not find file corresponnding to web seed range request"));u=e.map(e=>{const t=e.offset+e.length-1;return{url:this.url+("/"===this.url[this.url.length-1]?"":"/")+e.path,fileOffsetInRange:Math.max(e.offset-a,0),start:Math.max(a-e.offset,0),end:Math.min(t,h-e.offset)}})}let d,l=0,f=!1;u.length>1&&(d=e.alloc(s)),u.forEach(e=>{const a=e.url,h=e.start,c=e.end;t("Requesting url=%s pieceIndex=%d offset=%d length=%d start=%d end=%d",a,r,i,s,h,c);const p={url:a,method:"GET",headers:{"user-agent":`WebTorrent/${n} (https://webtorrent.io)`,range:`bytes=${h}-${c}`}};function g(n,r){if(n.statusCode<200||n.statusCode>=300)return f=!0,o(new Error(`Unexpected HTTP status code ${n.statusCode}`));t("Got data of length %d",r.length),1===u.length?o(null,r):(r.copy(d,e.fileOffsetInRange),++l===u.length&&o(null,d))}wn.concat(p,(e,t,n)=>{if(!f)return e?"undefined"==typeof window||a.startsWith(`${window.location.origin}/`)?(f=!0,o(e)):wn.head(a,(t,n)=>{if(!f){if(t)return f=!0,o(t);if(n.statusCode<200||n.statusCode>=300)return f=!0,o(new Error(`Unexpected HTTP status code ${n.statusCode}`));if(n.url===a)return f=!0,o(e);p.url=n.url,wn.concat(p,(e,t,n)=>{if(!f)return e?(f=!0,o(e)):void g(t,n)})}}):void g(t,n)})})}destroy(){super.destroy(),this._torrent=null}}}).call(this,u({}).Buffer);var ii={};const si=Nt("webtorrent:peer"),oi=5e3,ai=25e3,hi=25e3;ii.createWebRTCPeer=((e,t)=>{const n=new ci(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}),ii.createTCPOutgoingPeer=((e,t)=>{const n=new ci(e,"tcpOutgoing");return n.addr=e,n.swarm=t,n}),ii.createWebSeedPeer=((e,t)=>{const n=new ci(e,"webSeed");return n.swarm=t,n.conn=new ri(e,t),n.onConnect(),n});class ci{constructor(e,t){this.id=e,this.type=t,si("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)return;this.connected=!0,si("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 ti;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"));si("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}:${this.conn.remotePort}`),this.swarm._onWire(this.wire,n),this.swarm&&!this.swarm.destroyed&&(this.sentHandshake||this.handshake())}handshake(){const e={dht:!this.swarm.private&&!!this.swarm.client.dht};this.wire.handshake(this.swarm.infoHash,this.swarm.client.peerId,e),this.sentHandshake=!0}startConnectTimeout(){clearTimeout(this.connectTimeout),this.connectTimeout=setTimeout(()=>{this.destroy(new Error("connect timeout"))},"webrtc"===this.type?ai:oi),this.connectTimeout.unref&&this.connectTimeout.unref()}startHandshakeTimeout(){clearTimeout(this.handshakeTimeout),this.handshakeTimeout=setTimeout(()=>{this.destroy(new Error("handshake timeout"))},hi),this.handshakeTimeout.unref&&this.handshakeTimeout.unref()}destroy(e){if(this.destroyed)return;this.destroyed=!0,this.connected=!1,si("destroy %s (error: %s)",this.id,e&&(e.message||e)),clearTimeout(this.connectTimeout),clearTimeout(this.handshakeTimeout);const t=this.swarm,n=this.conn,r=this.wire;this.swarm=null,this.conn=null,this.wire=null,t&&r&&ei(t.wires,t.wires.indexOf(r)),n&&(n.on("error",()=>{}),n.destroy()),r&&r.destroy(),t&&t.removePeer(this.id)}}var ui={};(function(e,t){const n=Nt("webtorrent:torrent"),r=d.EventEmitter,i=3*rr.BLOCK_LENGTH,s=e.browser?1/0:2,o=[1e3,5e3,15e3],a=`WebTorrent/${ni} (https://webtorrent.io)`;let h;try{h=et.join(ut.statSync("/tmp")&&"/tmp","webtorrent")}catch(li){h=et.join("function"==typeof te.tmpdir?te.tmpdir():"/","webtorrent")}function c(e,t){return 2+Math.ceil(t*e.downloadSpeed()/rr.BLOCK_LENGTH)}function u(){}ui=class extends r{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||er,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=Bn(),this._uploadSpeed=Bn(),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:(this.length-this.downloaded)/this.downloadSpeed*1e3}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(t){if(this.destroyed)return;let n;try{n=Cn(t)}catch(li){}n?(this.infoHash=n.infoHash,this._debugId=n.infoHash.toString("hex").substring(0,7),e.nextTick(()=>{this.destroyed||this._onParsedTorrent(n)})):Cn.remote(t,(e,t)=>{if(!this.destroyed)return 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=et.join(h,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&&t.WEBTORRENT_ANNOUNCE&&!this.private&&(e.announce=e.announce.concat(t.WEBTORRENT_ANNOUNCE)),this.urlList&&(e.urlList=e.urlList.concat(this.urlList)),kn(e.announce),kn(e.urlList),Object.assign(this,e),this.magnetURI=Cn.toMagnetURI(e),this.torrentFile=Cn.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:Math.max(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 Qn({infoHash:this.infoHash,announce:this.announce,peerId:this.client.peerId,dht:!this.private&&this.client.dht,tracker:e,port:this.client.torrentPort,userAgent:a}),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(){const e=this,t=(Array.isArray(this.xs)?this.xs:[this.xs]).map(t=>n=>{!function(t,n){if(0!==t.indexOf("http://")&&0!==t.indexOf("https://"))return e.emit("warning",new Error(`skipping non-http xs param: ${t}`)),n(null);const r={url:t,method:"GET",headers:{"user-agent":a}};let i;try{i=wn.concat(r,function(r,i,s){if(e.destroyed)return n(null);if(e.metadata)return n(null);if(r)return e.emit("warning",new Error(`http error from xs param: ${t}`)),n(null);if(200!==i.statusCode)return e.emit("warning",new Error(`non-200 status code ${i.statusCode} from xs param: ${t}`)),n(null);let o;try{o=Cn(s)}catch(r){}return o?o.infoHash!==e.infoHash?(e.emit("warning",new Error(`got torrent file with incorrect info hash from xs param: ${t}`)),n(null)):(e._onMetadata(o),void n(null)):(e.emit("warning",new Error(`got invalid torrent file from xs param: ${t}`)),n(null))})}catch(li){return e.emit("warning",new Error(`skipping invalid url xs param: ${t}`)),n(null)}e._xsRequests.push(i)}(t,n)});kt(t)}_onMetadata(e){if(this.metadata||this.destroyed)return;let t;if(this._debug("got metadata"),this._xsRequests.forEach(e=>{e.abort()}),this._xsRequests=[],e&&e.infoHash)t=e;else try{t=Cn(e)}catch(li){return this._destroy(li)}if(this._processParsedTorrent(t),this.metadata=this.torrentFile,this.client.enableWebSeeds&&this.urlList.forEach(e=>{this.addWebSeed(e)}),this._rarityMap=new class{constructor(e){this._torrent=e,this._numPieces=e.pieces.length,this._pieces=new 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 i=this._pieces[r];i===n?t.push(r):i<n&&(t=[r],n=i)}return t.length?t[Math.random()*t.length|0]:-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}}(this),this.store=new tr(new this._store(this.pieceLength,{torrent:{infoHash:this.infoHash},files:this.files.map(e=>({path:et.join(this.path,e.path),length:e.length,offset:e.offset})),length:this.length,name:this.infoHash})),this.files=this.files.map(e=>new Qr(this,e)),this.so){const e=cr.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 rr(n)}),this._reservations=this.pieces.map(()=>[]),this.bitfield=new Nn(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=>{if(e)return this._destroy(e);this._debug("done verifying"),this._onStore()};this._debug("verifying existing torrent data"),this._fileModtimes&&this._store===er?this.getFileModtimes((t,n)=>{if(t)return this._destroy(t);this.files.map((e,t)=>n[t]===this._fileModtimes[t]).every(e=>e)?(this._markAllVerified(),this._onStore()):this._verifyPieces(e)}):this._verifyPieces(e)}}getFileModtimes(e){const t=[];nr(this.files.map((e,n)=>r=>{ut.stat(et.join(this.path,e.path),(e,i)=>{if(e&&"ENOENT"!==e.code)return r(e);t[n]=i&&i.mtime.getTime(),r(null)})}),s,n=>{this._debug("done getting file modtimes"),e(n,t)})}_verifyPieces(t){nr(this.pieces.map((t,n)=>t=>{if(this.destroyed)return t(new Error("torrent is destroyed"));this.store.get(n,(r,i)=>this.destroyed?t(new Error("torrent is destroyed")):r?e.nextTick(t,null):void Rt(i,e=>{if(this.destroyed)return t(new Error("torrent is destroyed"));if(e===this._hashes[n]){if(!this.pieces[n])return t(null);this._debug("piece verified %s",n),this._markVerified(n)}else this._debug("piece invalid %s",n);t(null)}))}),s,t)}rescanFiles(e){if(this.destroyed)throw new Error("torrent is destroyed");e||(e=u),this._verifyPieces(t=>{if(t)return this._destroy(t),e(t);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)return;this.destroyed=!0,this._debug("destroy"),this.client._remove(this),clearInterval(this._rechokeIntervalId),this._xsRequests.forEach(e=>{e.abort()}),this._rarityMap&&this._rarityMap.destroy();for(const r in this._peers)this.removePeer(r);this.files.forEach(e=>{e instanceof Qr&&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)}),kt(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(e){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 t;if("string"==typeof e){let r;try{r=Un(e)}catch(n){return this._debug("ignoring peer: invalid %s",e),this.emit("invalidPeer",e),!1}t=r[0]}else"string"==typeof e.remoteAddress&&(t=e.remoteAddress);if(t&&this.client.blocked.contains(t))return this._debug("ignoring peer: blocked %s",e),"string"!=typeof e&&e.destroy(),this.emit("blockedPeer",e),!1}const t=!!this._addPeer(e);return t?this.emit("peer",e):this.emit("invalidPeer",e),t}_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;let n;return this._debug("add peer %s",t),n="string"==typeof e?ii.createTCPOutgoingPeer(e,this):ii.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=ii.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")):(this._debug("add incoming peer %s",e.id),this._peers[e.id]=e,void(this._peersLength+=1))}removePeer(e){const t=e&&e.id||e;(e=this._peers[t])&&(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(e<0||t<e||this.pieces.length<=t)throw new Error(`invalid selection ${e} : ${t}`);n=Number(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=Number(n)||0,this._debug("deselect %s-%s (priority %s)",e,t,n);for(let r=0;r<this._selections.length;++r){const i=this._selections[r];if(i.from===e&&i.to===t&&i.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(t,n){if(this._debug("got wire %s (%s)",t._debugId,n||"Unknown"),t.on("download",e=>{this.destroyed||(this.received+=e,this._downloadSpeed(e),this.client._downloadSpeed(e),this.emit("download",e),this.client.emit("download",e))}),t.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(t),n){const e=Un(n);t.remoteAddress=e[0],t.remotePort=e[1]}this.client.dht&&this.client.dht.listening&&t.on("port",e=>{if(!this.destroyed&&!this.client.dht.destroyed){if(!t.remoteAddress)return this._debug("ignoring PORT from peer with no address");if(0===e||e>65536)return this._debug("ignoring invalid PORT from peer");this._debug("port: %s (from %s)",e,n),this.client.dht.addNode({host:t.remoteAddress,port:e})}}),t.on("timeout",()=>{this._debug("wire timeout (%s)",n),t.destroy()}),t.setTimeout(3e4,!0),t.setKeepAlive(!0),t.use(hr(this.metadata)),t.ut_metadata.on("warning",e=>{this._debug("ut_metadata warning: %s",e.message)}),this.metadata||(t.ut_metadata.on("metadata",e=>{this._debug("got metadata via ut_metadata"),this._onMetadata(e)}),t.ut_metadata.fetch()),"function"!=typeof te||this.private||(t.use(te()),t.ut_pex.on("peer",e=>{this.done||(this._debug("ut_pex: got peer: %s (from %s)",e,n),this.addPeer(e))}),t.ut_pex.on("dropped",e=>{const t=this._peers[e];t&&!t.connected&&(this._debug("ut_pex: dropped peer: %s (from %s)",e,n),this.removePeer(e))}),t.once("close",()=>{t.ut_pex.reset()})),this.emit("wire",t,n),this.metadata&&e.nextTick(()=>{this._onWireWithMetadata(t)})}_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,5e3)).unref&&t.unref())};let r;const i=()=>{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",()=>{i(),this._update()}),e.on("have",()=>{i(),this._update()}),e.once("interested",()=>{e.unchoke()}),e.once("close",()=>{clearTimeout(t)}),e.on("choke",()=>{clearTimeout(t),(t=setTimeout(n,5e3)).unref&&t.unref()}),e.on("unchoke",()=>{clearTimeout(t),this._update()}),e.on("request",(t,n,r,i)=>{if(r>131072)return e.destroy();this.pieces[t]||this.store.get(t,{offset:n,length:r},i)}),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,5e3)).unref&&t.unref(),e.isSeeder=!1,i()}_updateSelections(){this.ready&&!this.destroyed&&(e.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)return;const e=(t=this.wires,n=0,function(){if(n===t.length)return null;var e=t.length-n,r=Math.random()*e|0,i=t[n+r],s=t[n];return t[n]=i,t[n+r]=s,n++,i});var t,n;let r;for(;r=e();)this._updateWireWrapper(r)}_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){const t=this;if(e.peerChoking)return;if(!e.downloaded)return function(){if(e.requests.length)return;let n=t._selections.length;for(;n--;){const r=t._selections[n];let i;if("rarest"===t.strategy){const n=r.from+r.offset,o=r.to,a=o-n+1,h={};let c=0;const u=s(n,o,h);for(;c<a&&!((i=t._rarityMap.getRarestPiece(u))<0);){if(t._request(e,i,!1))return;h[i]=!0,c+=1}}else for(i=r.to;i>=r.from+r.offset;--i)if(e.peerPieces.get(i)&&t._request(e,i,!1))return}}();const n=c(e,.5);if(e.requests.length>=n)return;const r=c(e,1);function s(t,n,r,i){return s=>s>=t&&s<=n&&!(s in r)&&e.peerPieces.get(s)&&(!i||i(s))}function o(e){let n=e;for(let i=e;i<t._selections.length&&t._selections[i].priority;i++)n=i;const r=t._selections[e];t._selections[e]=t._selections[n],t._selections[n]=r}function a(n){if(e.requests.length>=r)return!0;const a=function(){const n=e.downloadSpeed()||1;if(n>i)return()=>!0;const r=Math.max(1,e.requests.length)*rr.BLOCK_LENGTH/n;let s=10,o=0;return e=>{if(!s||t.bitfield.get(e))return!0;let a=t.pieces[e].missing;for(;o<t.wires.length;o++){const h=t.wires[o],c=h.downloadSpeed();if(!(c<i)&&!(c<=n)&&h.peerPieces.get(e)&&!((a-=c*r)>0))return s--,!1}return!0}}();for(let i=0;i<t._selections.length;i++){const h=t._selections[i];let c;if("rarest"===t.strategy){const u=h.from+h.offset,d=h.to,l=d-u+1,f={};let p=0;const g=s(u,d,f,a);for(;p<l&&!((c=t._rarityMap.getRarestPiece(g))<0);){for(;t._request(e,c,t._critical[c]||n););if(!(e.requests.length<r))return h.priority&&o(i),!0;f[c]=!0,p++}}else for(c=h.from+h.offset;c<=h.to;c++)if(e.peerPieces.get(c)&&a(c)){for(;t._request(e,c,t._critical[c]||n););if(!(e.requests.length<r))return h.priority&&o(i),!0}}return!1}a(!1)||a(!0)}_rechoke(){if(!this.ready)return;this._rechokeOptimisticTime>0?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?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});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),i=t[(r=t.length,Math.random()*r|0)];i&&(i.isChoked=!1,this._rechokeOptimisticWire=i.wire,this._rechokeOptimisticTime=2)}var r;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<rr.BLOCK_LENGTH)return!1;if(!this._reservations[t])return!1;const r=this._reservations[t];if(!r)return!1;let s,o,a=1/0;for(o=0;o<r.length;o++){const t=r[o];if(!t||t===e)continue;const h=t.downloadSpeed();h>=i||2*h>n||h>a||(s=t,a=h)}if(!s)return!1;for(o=0;o<r.length;o++)r[o]===s&&(r[o]=null);for(o=0;o<s.requests.length;o++){const e=s.requests[o];e.piece===t&&this.pieces[t].cancel(e.offset/rr.BLOCK_LENGTH|0)}return this.emit("hotswap",s,e,t),!0}_request(t,n,r){const i=this,s=t.requests.length,o="webSeed"===t.type;if(i.bitfield.get(n))return!1;if(s>=(o?Math.min(function(e,t,n){return 1+Math.ceil(1*e.downloadSpeed()/n)}(t,0,i.pieceLength),i.maxWebConns):c(t,1)))return!1;const a=i.pieces[n];let h=o?a.reserveRemaining():a.reserve();if(-1===h&&r&&i._hotswap(t,n)&&(h=o?a.reserveRemaining():a.reserve()),-1===h)return!1;let u=i._reservations[n];u||(u=i._reservations[n]=[]);let d=u.indexOf(null);-1===d&&(d=u.length),u[d]=t;const l=a.chunkOffset(h),f=o?a.chunkLengthRemaining(h):a.chunkLength(h);function p(){e.nextTick(()=>{i._update()})}return t.request(n,l,f,function e(r,s){if(i.destroyed)return;if(!i.ready)return i.once("ready",()=>{e(r,s)});if(u[d]===t&&(u[d]=null),a!==i.pieces[n])return p();if(r)return i._debug("error getting piece %s (offset: %s length: %s) from %s: %s",n,l,f,`${t.remoteAddress}:${t.remotePort}`,r.message),o?a.cancelRemaining(h):a.cancel(h),void p();if(i._debug("got piece %s (offset: %s length: %s) from %s",n,l,f,`${t.remoteAddress}:${t.remotePort}`),!a.set(h,s,t))return p();const c=a.flush();Rt(c,e=>{if(!i.destroyed){if(e===i._hashes[n]){if(!i.pieces[n])return;i._debug("piece verified %s",n),i.pieces[n]=null,i._reservations[n]=null,i.bitfield.set(n,!0),i.store.put(n,c),i.wires.forEach(e=>{e.have(n)}),i._checkDone()&&!i.destroyed&&i.discovery.complete()}else i.pieces[n]=new rr(a.length),i.emit("warning",new Error(`Piece ${n} failed verification`));p()}})}),!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: ${this.infoHash}`),this.emit("done")),this._gcSelections(),e}load(e,t){if(this.destroyed)throw new Error("torrent is destroyed");if(!this.ready)return this.once("ready",()=>{this.load(e,t)});Array.isArray(e)||(e=[e]),t||(t=u);const n=new pt(e),r=new Hn(this.store,this.pieceLength);ar(n,r,e=>{if(e)return t(e);this._markAllVerified(),this._checkDone(),t(null)})}createServer(e){if("function"!=typeof te)throw new Error("node.js-only method");if(this.destroyed)throw new Error("torrent is destroyed");const t=new te(this,e);return this._servers.push(t),t}pause(){this.destroyed||(this._debug("pause"),this.paused=!0)}resume(){this.destroyed||(this._debug("resume"),this.paused=!1,this._drain())}_debug(){const e=[].slice.call(arguments);e[0]=`[${this.client._debugId}] [${this._debugId}] ${e[0]}`,n(...e)}_drain(){if(this._debug("_drain numConns %s maxConns %s",this._numConns,this.client.maxConns),"function"!=typeof te.connect||this.destroyed||this.paused||this._numConns>=this.client.maxConns)return;this._debug("drain (%s queued, %s/%s peers)",this._numQueued,this.numPeers,this.client.maxConns);const e=this._queue.shift();if(!e)return;this._debug("tcp connect attempt to %s",e.addr);const t=Un(e.addr),n={host:t[0],port:t[1]},r=e.conn=te.connect(n);r.once("connect",()=>{e.onConnect()}),r.once("error",t=>{e.destroy(t)}),e.startConnectTimeout(),r.on("close",()=>{if(this.destroyed)return;if(e.retries>=o.length)return void this._debug("conn %s closed: will not re-add (max %s attempts)",e.addr,o.length);const t=o[e.retries];this._debug("conn %s closed: will re-add to queue in %sms (attempt %s)",e.addr,t,e.retries+1);const n=setTimeout(()=>{const t=this._addPeer(e.addr);t&&(t.retries=e.retries+1)},t);n.unref&&n.unref()})}_validAddr(e){let t;try{t=Un(e)}catch(i){return!1}const n=t[0],r=t[1];return r>0&&r<65535&&!("127.0.0.1"===n&&r===this.client.torrentPort)}}}).call(this,ce,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{});var di={};return function(e,t,n){const{EventEmitter:r}=d,i=Nt("webtorrent"),s=ni,o=s.replace(/\d*./g,e=>`0${e%100}`.slice(-2)).slice(0,4),a=`-WW${o}-`;class h extends r{constructor(r={}){super(),"string"==typeof r.peerId?this.peerId=r.peerId:n.isBuffer(r.peerId)?this.peerId=r.peerId.toString("hex"):this.peerId=n.from(a+Tn(9).toString("base64")).toString("hex"),this.peerIdBuffer=n.from(this.peerId,"hex"),"string"==typeof r.nodeId?this.nodeId=r.nodeId:n.isBuffer(r.nodeId)?this.nodeId=r.nodeId.toString("hex"):this.nodeId=Tn(20).toString("hex"),this.nodeIdBuffer=n.from(this.nodeId,"hex"),this._debugId=this.peerId.toString("hex").substring(0,7),this.destroyed=!1,this.listening=!1,this.torrentPort=r.torrentPort||0,this.dhtPort=r.dhtPort||0,this.tracker=void 0!==r.tracker?r.tracker:{},this.torrents=[],this.maxConns=Number(r.maxConns)||55,this._debug("new webtorrent (peerId %s, nodeId %s, port %s)",this.peerId,this.nodeId,this.torrentPort),this.tracker&&("object"!=typeof this.tracker&&(this.tracker={}),r.rtcConfig&&(console.warn("WebTorrent: opts.rtcConfig is deprecated. Use opts.tracker.rtcConfig instead"),this.tracker.rtcConfig=r.rtcConfig),r.wrtc&&(console.warn("WebTorrent: opts.wrtc is deprecated. Use opts.tracker.wrtc instead"),this.tracker.wrtc=r.wrtc),t.WRTC&&!this.tracker.wrtc&&(this.tracker.wrtc=t.WRTC)),"function"==typeof te?this._tcpPool=new te(this):e.nextTick(()=>{this._onListening()}),this._downloadSpeed=Bn(),this._uploadSpeed=Bn(),!1!==r.dht&&"function"==typeof te?(this.dht=new te(Object.assign({},{nodeId:this.nodeId},r.dht)),this.dht.once("error",e=>{this._destroy(e)}),this.dht.once("listening",()=>{const e=this.dht.address();e&&(this.dhtPort=e.port)}),this.dht.setMaxListeners(0),this.dht.listen(this.dhtPort)):this.dht=!1,this.enableWebSeeds=!1!==r.webSeeds;const i=()=>{this.destroyed||(this.ready=!0,this.emit("ready"))};"function"==typeof te&&null!=r.blocklist?te(r.blocklist,{headers:{"user-agent":`WebTorrent/${s} (https://webtorrent.io)`}},(e,t)=>{if(e)return this.error(`Failed to load blocklist: ${e.message}`);this.blocked=t,i()}):e.nextTick(i)}get downloadSpeed(){return this._downloadSpeed()}get uploadSpeed(){return this._uploadSpeed()}get progress(){const e=this.torrents.filter(e=>1!==e.progress);return e.reduce((e,t)=>e+t.downloaded,0)/(e.reduce((e,t)=>e+(t.length||0),0)||1)}get ratio(){return this.torrents.reduce((e,t)=>e+t.uploaded,0)/(this.torrents.reduce((e,t)=>e+t.received,0)||1)}get(e){if(e instanceof ui){if(this.torrents.includes(e))return e}else{let t;try{t=Cn(e)}catch(li){}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}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){if(this.destroyed)throw new Error("client is destroyed");"function"==typeof t&&([t,n]=[{},t]);const r=()=>{if(!this.destroyed)for(const e of this.torrents)if(e.infoHash===s.infoHash&&e!==s)return void s._destroy(new Error(`Cannot add duplicate torrent ${s.infoHash}`))},i=()=>{this.destroyed||("function"==typeof n&&n(s),this.emit("torrent",s))};this._debug("add"),t=t?Object.assign({},t):{};const s=new ui(e,this,t);return this.torrents.push(s),s.once("_infoHash",r),s.once("ready",i),s.once("close",function e(){s.removeListener("_infoHash",r),s.removeListener("ready",i),s.removeListener("close",e)}),s}seed(e,t,n){if(this.destroyed)throw new Error("client is destroyed");"function"==typeof t&&([t,n]=[{},t]),this._debug("seed"),(t=t?Object.assign({},t):{}).skipVerify=!0;const r="string"==typeof e;r&&(t.path=et.dirname(e)),t.createdBy||(t.createdBy=`WebTorrent/${o}`);const i=e=>{this._debug("on seed"),"function"==typeof n&&n(e),e.emit("seed"),this.emit("seed",e)},s=this.add(null,t,e=>{const t=[t=>{if(r)return t();e.load(a,t)}];this.dht&&t.push(t=>{e.once("dhtAnnounce",t)}),kt(t,t=>{if(!this.destroyed)return t?e._destroy(t):void i(e)})});let a;return"undefined"!=typeof FileList&&e instanceof FileList?e=Array.from(e):Array.isArray(e)||(e=[e]),kt(e.map(e=>t=>{!function(t){return"object"==typeof e&&null!=e&&"function"==typeof e.pipe}()?t(null,e):P(e,t)}),(e,n)=>{if(!this.destroyed)return e?s._destroy(e):void Pt.parseInput(n,t,(e,r)=>{if(!this.destroyed){if(e)return s._destroy(e);a=r.map(e=>e.getStream),Pt(n,t,(e,t)=>{if(this.destroyed)return;if(e)return s._destroy(e);const n=this.get(t);n?s._destroy(new Error(`Cannot add duplicate torrent ${n.infoHash}`)):s._onTorrentId(t)})}})}),s}remove(e,t){if(this._debug("remove"),!this.get(e))throw new Error(`No torrent with id ${e}`);this._remove(e,t)}_remove(e,t){const n=this.get(e);n&&(this.torrents.splice(this.torrents.indexOf(n),1),n.destroy(t))}address(){return this.listening?this._tcpPool?this._tcpPool.server.address():{address:"0.0.0.0",family:"IPv4",port:0}:null}destroy(e){if(this.destroyed)throw new Error("client already destroyed");this._destroy(null,e)}_destroy(e,t){this._debug("client destroy"),this.destroyed=!0;const n=this.torrents.map(e=>t=>{e.destroy(t)});this._tcpPool&&n.push(e=>{this._tcpPool.destroy(e)}),this.dht&&n.push(e=>{this.dht.destroy(e)}),kt(n,t),e&&this.emit("error",e),this.torrents=[],this._tcpPool=null,this.dht=null}_onListening(){if(this._debug("listening"),this.listening=!0,this._tcpPool){const e=this._tcpPool.server.address();e&&(this.torrentPort=e.port)}this.emit("listening")}_debug(){const e=[].slice.call(arguments);e[0]=`[${this._debugId}] ${e[0]}`,i(...e)}}h.WEBRTC_SUPPORT=In.WEBRTC_SUPPORT,h.VERSION=s,di=h}.call(this,ce,"undefined"!=typeof global?global:"undefined"!=typeof self?self:"undefined"!=typeof window?window:{},u({}).Buffer),di});