2 lines
140 KiB
JavaScript
2 lines
140 KiB
JavaScript
require=function e(t,n,r){function i(o,a){if(!n[o]){if(!t[o]){var u="function"==typeof require&&require;if(!a&&u)return u(o,!0);if(s)return s(o,!0);var c=new Error("Cannot find module '"+o+"'");throw c.code="MODULE_NOT_FOUND",c}var h=n[o]={exports:{}};t[o][0].call(h.exports,function(e){return i(t[o][1][e]||e)},h,h.exports,e,t,n,r)}return n[o].exports}for(var s="function"==typeof require&&require,o=0;o<r.length;o++)i(r[o]);return i}({1:[function(e,t,n){"use strict";Object.defineProperty(n,"__esModule",{value:!0});const r=1e3,i=6e4;class s{constructor(e,t){this.value=e,this.timeStamp=t}}n.BandwidthApproximator=class{constructor(){this.lastBytes=[],this.currentBytesSum=0,this.lastBandwidth=[]}addBytes(e,t){for(this.lastBytes.push(new s(e,t)),this.currentBytesSum+=e;t-this.lastBytes[0].timeStamp>r;)this.currentBytesSum-=this.lastBytes.shift().value;this.lastBandwidth.push(new s(this.currentBytesSum/r,t))}getBandwidth(e){for(;0!=this.lastBandwidth.length&&e-this.lastBandwidth[0].timeStamp>i;)this.lastBandwidth.shift();let t=0;for(const e of this.lastBandwidth)e.value>t&&(t=e.value);return t}getSmoothInterval(){return r}getMeasureInterval(){return i}}},{}],2:[function(e,t,n){window.p2pml||(window.p2pml={}),window.p2pml.core=e("./index")},{"./index":"p2p-media-loader-core"}],3:[function(e,t,n){"use strict";Object.defineProperty(n,"__esModule",{value:!0});const r=e("debug"),i=e("./stringly-typed-event-emitter");n.HttpMediaManager=class extends i.STEEmitter{constructor(e){super(),this.settings=e,this.xhrRequests=new Map,this.failedSegments=new Map,this.debug=r("p2pml:http-media-manager"),this.now=()=>performance.now()}download(e,t){if(this.isDownloading(e))return;this.cleanTimedOutFailedSegments();const n=this.settings.segmentUrlBuilder?this.settings.segmentUrlBuilder(e):e.url;this.debug("http segment download",n),e.requestUrl=n;const r=new XMLHttpRequest;if(r.open("GET",n,!0),r.responseType="arraybuffer",e.range)r.setRequestHeader("Range",e.range),t=void 0;else if(void 0!==t&&this.settings.httpUseRanges){let e=0;for(const n of t)e+=n.byteLength;r.setRequestHeader("Range",`bytes=${e}-`),this.debug("continue download from",e)}else t=void 0;this.setupXhrEvents(r,e,t),this.settings.xhrSetup&&this.settings.xhrSetup(r,n),this.xhrRequests.set(e.id,{xhr:r,segment:e}),r.send()}abort(e){const t=this.xhrRequests.get(e.id);t&&(t.xhr.abort(),this.xhrRequests.delete(e.id),this.debug("http segment abort",e.id))}isDownloading(e){return this.xhrRequests.has(e.id)}isFailed(e){const t=this.failedSegments.get(e.id);return void 0!==t&&t>this.now()}getActiveDownloads(){return this.xhrRequests}getActiveDownloadsCount(){return this.xhrRequests.size}destroy(){this.xhrRequests.forEach(e=>e.xhr.abort()),this.xhrRequests.clear()}setupXhrEvents(e,t,n){let r=0;e.addEventListener("progress",e=>{const t=e.loaded-r;this.emit("bytes-downloaded",t),r=e.loaded}),e.addEventListener("load",async r=>{if(r.target.status<200||r.target.status>=300)return void this.segmentFailure(t,r,e);let i=r.target.response;if(void 0!==n&&206===r.target.status){let e=0;for(const t of n)e+=t.byteLength;const t=new Uint8Array(e+i.byteLength);let r=0;for(const e of n)t.set(new Uint8Array(e),r),r+=e.byteLength;t.set(new Uint8Array(i),r),i=t.buffer}await this.segmentDownloadFinished(t,i,e)}),e.addEventListener("error",n=>{this.segmentFailure(t,n,e)}),e.addEventListener("timeout",n=>{this.segmentFailure(t,n,e)})}async segmentDownloadFinished(e,t,n){if(e.responseUrl=null===n.responseURL?void 0:n.responseURL,this.settings.segmentValidator)try{await this.settings.segmentValidator(Object.assign(Object.assign({},e),{data:t}),"http")}catch(t){return this.debug("segment validator failed",t),void this.segmentFailure(e,t,n)}this.xhrRequests.delete(e.id),this.emit("segment-loaded",e,t)}segmentFailure(e,t,n){e.responseUrl=null===n.responseURL?void 0:n.responseURL,this.xhrRequests.delete(e.id),this.failedSegments.set(e.id,this.now()+this.settings.httpFailedSegmentTimeout),this.emit("segment-error",e,t)}cleanTimedOutFailedSegments(){const e=this.now(),t=[];this.failedSegments.forEach((n,r)=>{n<e&&t.push(r)}),t.forEach(e=>this.failedSegments.delete(e))}}},{"./stringly-typed-event-emitter":9,debug:"debug"}],4:[function(e,t,n){"use strict";Object.defineProperty(n,"__esModule",{value:!0});const r=e("debug"),i=e("./loader-interface"),s=e("events"),o=e("./http-media-manager"),a=e("./p2p-media-manager"),u=e("./media-peer"),c=e("./bandwidth-approximator"),h=e("./segments-memory-storage"),l=e("get-browser-rtc"),d={cachedSegmentExpiration:3e5,cachedSegmentsCount:30,useP2P:!0,consumeOnly:!1,requiredSegmentsPriority:1,simultaneousHttpDownloads:2,httpDownloadProbability:.1,httpDownloadProbabilityInterval:1e3,httpDownloadProbabilitySkipIfNoPeers:!1,httpFailedSegmentTimeout:1e4,httpDownloadMaxPriority:20,httpDownloadInitialTimeout:0,httpDownloadInitialTimeoutPerSegment:4e3,httpUseRanges:!1,simultaneousP2PDownloads:3,p2pDownloadMaxPriority:20,p2pSegmentDownloadTimeout:6e4,webRtcMaxMessageSize:65535,trackerAnnounce:["wss://tracker.novage.com.ua","wss://tracker.openwebtorrent.com"],peerRequestsPerAnnounce:10,rtcConfig:e("simple-peer").config};n.HybridLoader=class extends s.EventEmitter{constructor(e={}){super(),this.debug=r("p2pml:hybrid-loader"),this.debugSegments=r("p2pml:hybrid-loader-segments"),this.segmentsQueue=[],this.bandwidthApproximator=new c.BandwidthApproximator,this.httpDownloadInitialTimeoutTimestamp=-1/0,this.processInitialSegmentTimeout=async()=>{if(void 0!==this.httpRandomDownloadInterval){if(void 0!==this.masterSwarmId){const e=await this.segmentsStorage.getSegmentsMap(this.masterSwarmId);this.processSegmentsQueue(e)&&!this.settings.consumeOnly&&this.p2pManager.sendSegmentsMapToAll(this.createSegmentsMap(e))}this.httpDownloadInitialTimeoutTimestamp!==-1/0&&setTimeout(this.processInitialSegmentTimeout,this.settings.httpDownloadInitialTimeoutPerSegment)}},this.downloadRandomSegmentOverHttp=async()=>{if(void 0===this.masterSwarmId||void 0===this.httpRandomDownloadInterval||this.httpDownloadInitialTimeoutTimestamp!==-1/0||this.httpManager.getActiveDownloadsCount()>=this.settings.simultaneousHttpDownloads||this.settings.httpDownloadProbabilitySkipIfNoPeers&&0===this.p2pManager.getPeers().size||this.settings.consumeOnly)return;const e=await this.segmentsStorage.getSegmentsMap(this.masterSwarmId),t=this.p2pManager.getOvrallSegmentsMap(),n=this.segmentsQueue.filter(n=>!this.p2pManager.isDownloading(n)&&!this.httpManager.isDownloading(n)&&!t.has(n.id)&&!this.httpManager.isFailed(n)&&n.priority<=this.settings.httpDownloadMaxPriority&&!e.has(n.id));if(0==n.length)return;if(Math.random()>this.settings.httpDownloadProbability*n.length)return;const r=n[Math.floor(Math.random()*n.length)];this.debugSegments("HTTP download (random)",r.priority,r.url),this.httpManager.download(r),this.p2pManager.sendSegmentsMapToAll(this.createSegmentsMap(e))},this.onPieceBytesDownloaded=(e,t,n)=>{this.bandwidthApproximator.addBytes(t,this.now()),this.emit(i.Events.PieceBytesDownloaded,e,t,n)},this.onPieceBytesUploaded=(e,t,n)=>{this.emit(i.Events.PieceBytesUploaded,e,t,n)},this.onSegmentLoaded=async(e,t,n)=>{if(this.debugSegments("segment loaded",e.id,e.url),void 0===this.masterSwarmId)return;let r;e.data=t,e.downloadBandwidth=this.bandwidthApproximator.getBandwidth(this.now()),await this.segmentsStorage.storeSegment(e),this.emit(i.Events.SegmentLoaded,e,n),r=void 0===r?await this.segmentsStorage.getSegmentsMap(this.masterSwarmId):r,this.processSegmentsQueue(r),this.settings.consumeOnly||this.p2pManager.sendSegmentsMapToAll(this.createSegmentsMap(r))},this.onSegmentError=async(e,t,n)=>{if(this.debugSegments("segment error",e.id,e.url,n,t),this.emit(i.Events.SegmentError,e,t,n),void 0!==this.masterSwarmId){const e=await this.segmentsStorage.getSegmentsMap(this.masterSwarmId);this.processSegmentsQueue(e)&&!this.settings.consumeOnly&&this.p2pManager.sendSegmentsMapToAll(this.createSegmentsMap(e))}},this.onPeerConnect=async e=>{this.emit(i.Events.PeerConnect,e),this.settings.consumeOnly||void 0===this.masterSwarmId||this.p2pManager.sendSegmentsMap(e.id,this.createSegmentsMap(await this.segmentsStorage.getSegmentsMap(this.masterSwarmId)))},this.onPeerClose=e=>{this.emit(i.Events.PeerClose,e)},this.onTrackerUpdate=async e=>{if(this.httpDownloadInitialTimeoutTimestamp!==-1/0&&void 0!==e.incomplete&&e.incomplete<=1&&(this.debugSegments("cancel initial HTTP download timeout - no peers"),this.httpDownloadInitialTimeoutTimestamp=-1/0,void 0!==this.masterSwarmId)){const e=await this.segmentsStorage.getSegmentsMap(this.masterSwarmId);this.processSegmentsQueue(e)&&!this.settings.consumeOnly&&this.p2pManager.sendSegmentsMapToAll(this.createSegmentsMap(e))}},this.settings=Object.assign(Object.assign({},d),e),e.bufferedSegmentsCount&&(void 0===e.p2pDownloadMaxPriority&&(this.settings.p2pDownloadMaxPriority=e.bufferedSegmentsCount),void 0===e.httpDownloadMaxPriority&&(this.settings.p2pDownloadMaxPriority=e.bufferedSegmentsCount),delete this.settings.bufferedSegmentsCount),this.segmentsStorage=void 0===this.settings.segmentsStorage?new h.SegmentsMemoryStorage(this.settings):this.settings.segmentsStorage,this.debug("loader settings",this.settings),this.httpManager=this.createHttpManager(),this.httpManager.on("segment-loaded",this.onSegmentLoaded),this.httpManager.on("segment-error",this.onSegmentError),this.httpManager.on("bytes-downloaded",e=>this.onPieceBytesDownloaded("http",e)),this.p2pManager=this.createP2PManager(),this.p2pManager.on("segment-loaded",this.onSegmentLoaded),this.p2pManager.on("segment-error",this.onSegmentError),this.p2pManager.on("peer-data-updated",async()=>{if(void 0===this.masterSwarmId)return;const e=await this.segmentsStorage.getSegmentsMap(this.masterSwarmId);this.processSegmentsQueue(e)&&!this.settings.consumeOnly&&this.p2pManager.sendSegmentsMapToAll(this.createSegmentsMap(e))}),this.p2pManager.on("bytes-downloaded",(e,t)=>this.onPieceBytesDownloaded("p2p",e,t)),this.p2pManager.on("bytes-uploaded",(e,t)=>this.onPieceBytesUploaded("p2p",e,t)),this.p2pManager.on("peer-connected",this.onPeerConnect),this.p2pManager.on("peer-closed",this.onPeerClose),this.p2pManager.on("tracker-update",this.onTrackerUpdate)}static isSupported(){const e=l();return e&&void 0!==e.RTCPeerConnection.prototype.createDataChannel}createHttpManager(){return new o.HttpMediaManager(this.settings)}createP2PManager(){return new a.P2PMediaManager(this.segmentsStorage,this.settings)}async load(e,t){void 0===this.httpRandomDownloadInterval&&(this.httpRandomDownloadInterval=setInterval(this.downloadRandomSegmentOverHttp,this.settings.httpDownloadProbabilityInterval),this.settings.httpDownloadInitialTimeout>0&&this.settings.httpDownloadInitialTimeoutPerSegment>0&&(this.debugSegments("enable initial HTTP download timeout",this.settings.httpDownloadInitialTimeout,"per segment",this.settings.httpDownloadInitialTimeoutPerSegment),this.httpDownloadInitialTimeoutTimestamp=this.now(),setTimeout(this.processInitialSegmentTimeout,this.settings.httpDownloadInitialTimeoutPerSegment+100))),e.length>0&&(this.masterSwarmId=e[0].masterSwarmId),void 0!==this.masterSwarmId&&this.p2pManager.setStreamSwarmId(t,this.masterSwarmId),this.debug("load segments");let n=!1;for(const t of this.segmentsQueue)e.find(e=>e.url==t.url)||(this.debug("remove segment",t.url),this.httpManager.isDownloading(t)?(n=!0,this.httpManager.abort(t)):this.p2pManager.abort(t),this.emit(i.Events.SegmentAbort,t));if(this.debug.enabled)for(const t of e)this.segmentsQueue.find(e=>e.url==t.url)||this.debug("add segment",t.url);if(this.segmentsQueue=e,void 0===this.masterSwarmId)return;let r=await this.segmentsStorage.getSegmentsMap(this.masterSwarmId);n=this.processSegmentsQueue(r)||n,await this.cleanSegmentsStorage()&&(r=await this.segmentsStorage.getSegmentsMap(this.masterSwarmId),n=!0),n&&!this.settings.consumeOnly&&this.p2pManager.sendSegmentsMapToAll(this.createSegmentsMap(r))}async getSegment(e){return void 0===this.masterSwarmId?void 0:this.segmentsStorage.getSegment(e,this.masterSwarmId)}getSettings(){return this.settings}getDetails(){return{peerId:this.p2pManager.getPeerId()}}async destroy(){void 0!==this.httpRandomDownloadInterval&&(clearInterval(this.httpRandomDownloadInterval),this.httpRandomDownloadInterval=void 0),this.httpDownloadInitialTimeoutTimestamp=-1/0,this.segmentsQueue=[],this.httpManager.destroy(),this.p2pManager.destroy(),this.masterSwarmId=void 0,await this.segmentsStorage.destroy()}processSegmentsQueue(e){if(this.debugSegments("process segments queue. priority",this.segmentsQueue.length>0?this.segmentsQueue[0].priority:0),void 0===this.masterSwarmId||0===this.segmentsQueue.length)return!1;let t,n=!1,r=!0;if(this.httpDownloadInitialTimeoutTimestamp!==-1/0){let t;for(const n of this.segmentsQueue)if(!e.has(n.id)){t=n.priority;break}const n=this.now()-this.httpDownloadInitialTimeoutTimestamp;(r=n>=this.settings.httpDownloadInitialTimeout||void 0!==t&&n>this.settings.httpDownloadInitialTimeoutPerSegment&&t<=0)&&(this.debugSegments("cancel initial HTTP download timeout - timed out"),this.httpDownloadInitialTimeoutTimestamp=-1/0)}for(let i=0;i<this.segmentsQueue.length;i++){const s=this.segmentsQueue[i];if(!e.has(s.id)&&!this.httpManager.isDownloading(s)){if(s.priority<=this.settings.requiredSegmentsPriority&&r&&!this.httpManager.isFailed(s)){if(this.httpManager.getActiveDownloadsCount()>=this.settings.simultaneousHttpDownloads)for(let e=this.segmentsQueue.length-1;e>i;e--){const t=this.segmentsQueue[e];if(this.httpManager.isDownloading(t)){this.debugSegments("cancel HTTP download",t.priority,t.url),this.httpManager.abort(t);break}}if(this.httpManager.getActiveDownloadsCount()<this.settings.simultaneousHttpDownloads){const e=this.p2pManager.abort(s);this.httpManager.download(s,e),this.debugSegments("HTTP download (priority)",s.priority,s.url),n=!0;continue}}if(!this.p2pManager.isDownloading(s))if(s.priority<=this.settings.requiredSegmentsPriority){if((t=t||this.p2pManager.getOvrallSegmentsMap()).get(s.id)!==u.MediaPeerSegmentStatus.Loaded)continue;if(this.p2pManager.getActiveDownloadsCount()>=this.settings.simultaneousP2PDownloads)for(let e=this.segmentsQueue.length-1;e>i;e--){const t=this.segmentsQueue[e];if(this.p2pManager.isDownloading(t)){this.debugSegments("cancel P2P download",t.priority,t.url),this.p2pManager.abort(t);break}}if(this.p2pManager.getActiveDownloadsCount()<this.settings.simultaneousP2PDownloads&&this.p2pManager.download(s)){this.debugSegments("P2P download (priority)",s.priority,s.url);continue}}else this.p2pManager.getActiveDownloadsCount()<this.settings.simultaneousP2PDownloads&&s.priority<=this.settings.p2pDownloadMaxPriority&&this.p2pManager.download(s)&&this.debugSegments("P2P download",s.priority,s.url)}}return n}getStreamSwarmId(e){return void 0===e.streamId?e.masterSwarmId:`${e.masterSwarmId}+${e.streamId}`}createSegmentsMap(e){const t={},n=(e,n)=>{const r=this.getStreamSwarmId(e),i=e.sequence;let s=t[r];void 0===s&&(s=["",[]],t[r]=s);const o=s[1];s[0]+=0==o.length?i:`|${i}`,o.push(n)};for(const t of e.values())n(t.segment,u.MediaPeerSegmentStatus.Loaded);for(const e of this.httpManager.getActiveDownloads().values())n(e.segment,u.MediaPeerSegmentStatus.LoadingByHttp);return t}async cleanSegmentsStorage(){return void 0!==this.masterSwarmId&&this.segmentsStorage.clean(this.masterSwarmId,e=>void 0!==this.segmentsQueue.find(t=>t.id===e))}now(){return performance.now()}}},{"./bandwidth-approximator":1,"./http-media-manager":3,"./loader-interface":5,"./media-peer":6,"./p2p-media-manager":7,"./segments-memory-storage":8,debug:"debug",events:"events","get-browser-rtc":18,"simple-peer":44}],5:[function(e,t,n){"use strict";Object.defineProperty(n,"__esModule",{value:!0}),function(e){e.SegmentLoaded="segment_loaded",e.SegmentError="segment_error",e.SegmentAbort="segment_abort",e.PeerConnect="peer_connect",e.PeerClose="peer_close",e.PieceBytesDownloaded="piece_bytes_downloaded",e.PieceBytesUploaded="piece_bytes_uploaded"}(n.Events||(n.Events={}))},{}],6:[function(e,t,n){"use strict";Object.defineProperty(n,"__esModule",{value:!0});const r=e("debug"),i=e("./stringly-typed-event-emitter"),s=e("buffer");var o,a;!function(e){e[e.SegmentData=0]="SegmentData",e[e.SegmentAbsent=1]="SegmentAbsent",e[e.SegmentsMap=2]="SegmentsMap",e[e.SegmentRequest=3]="SegmentRequest",e[e.CancelSegmentRequest=4]="CancelSegmentRequest"}(o||(o={})),function(e){e[e.Loaded=0]="Loaded",e[e.LoadingByHttp=1]="LoadingByHttp"}(a=n.MediaPeerSegmentStatus||(n.MediaPeerSegmentStatus={}));class u{constructor(e,t){this.id=e,this.size=t,this.bytesDownloaded=0,this.pieces=[]}}n.MediaPeer=class extends i.STEEmitter{constructor(e,t){super(),this.peer=e,this.settings=t,this.remoteAddress="",this.downloadingSegmentId=null,this.downloadingSegment=null,this.segmentsMap=new Map,this.debug=r("p2pml:media-peer"),this.timer=null,this.onPeerConnect=()=>{this.debug("peer connect",this.id,this),this.remoteAddress=this.peer.remoteAddress,this.emit("connect",this)},this.onPeerClose=()=>{this.debug("peer close",this.id,this),this.terminateSegmentRequest(),this.emit("close",this)},this.onPeerError=e=>{this.debug("peer error",this.id,e,this)},this.onPeerData=e=>{const t=this.getJsonCommand(e);if(null!=t){if(this.downloadingSegment){this.debug("peer segment download is interrupted by a command",this.id,this);const e=this.downloadingSegment.id;return this.terminateSegmentRequest(),void this.emit("segment-error",this,e,"Segment download is interrupted by a command")}switch(this.debug("peer receive command",this.id,t,this),t.c){case o.SegmentsMap:this.segmentsMap=this.createSegmentsMap(t.m),this.emit("data-updated");break;case o.SegmentRequest:this.emit("segment-request",this,t.i);break;case o.SegmentData:this.downloadingSegmentId===t.i&&(this.downloadingSegment=new u(t.i,t.s),this.cancelResponseTimeoutTimer());break;case o.SegmentAbsent:this.downloadingSegmentId===t.i&&(this.terminateSegmentRequest(),this.segmentsMap.delete(t.i),this.emit("segment-absent",this,t.i));break;case o.CancelSegmentRequest:}}else this.receiveSegmentPiece(e)},this.peer.on("connect",this.onPeerConnect),this.peer.on("close",this.onPeerClose),this.peer.on("error",this.onPeerError),this.peer.on("data",this.onPeerData),this.id=e.id}receiveSegmentPiece(e){if(!this.downloadingSegment)return void this.debug("peer segment not requested",this.id,this);this.downloadingSegment.bytesDownloaded+=e.byteLength,this.downloadingSegment.pieces.push(e),this.emit("bytes-downloaded",this,e.byteLength);const t=this.downloadingSegment.id;if(this.downloadingSegment.bytesDownloaded==this.downloadingSegment.size){const e=new Uint8Array(this.downloadingSegment.size);let n=0;for(const t of this.downloadingSegment.pieces)e.set(new Uint8Array(t),n),n+=t.byteLength;this.debug("peer segment download done",this.id,t,this),this.terminateSegmentRequest(),this.emit("segment-loaded",this,t,e.buffer)}else this.downloadingSegment.bytesDownloaded>this.downloadingSegment.size&&(this.debug("peer segment download bytes mismatch",this.id,t,this),this.terminateSegmentRequest(),this.emit("segment-error",this,t,"Too many bytes received for segment"))}getJsonCommand(e){const t=new Uint8Array(e);if(123==t[0]&&34==t[1]&&125==t[e.byteLength-1])try{return JSON.parse((new TextDecoder).decode(e))}catch(e){}return null}createSegmentsMap(e){if(null==e||!(e instanceof Object))return new Map;const t=new Map;for(const n of Object.keys(e)){const r=e[n];if(!(r instanceof Array&&2===r.length&&"string"==typeof r[0]&&r[1]instanceof Array))return new Map;const i=r[0].split("|"),s=r[1];if(i.length!==s.length)return new Map;for(let e=0;e<i.length;e++){const r=s[e];if("number"!=typeof r||void 0===a[r])return new Map;t.set(`${n}+${i[e]}`,r)}}return t}sendCommand(e){this.debug("peer send command",this.id,e,this),this.peer.write(JSON.stringify(e))}destroy(){this.debug("peer destroy",this.id,this),this.terminateSegmentRequest(),this.peer.destroy()}getDownloadingSegmentId(){return this.downloadingSegmentId}getSegmentsMap(){return this.segmentsMap}sendSegmentsMap(e){this.sendCommand({c:o.SegmentsMap,m:e})}sendSegmentData(e,t){this.sendCommand({c:o.SegmentData,i:e,s:t.byteLength});let n=t.byteLength;for(;n>0;){const e=n>=this.settings.webRtcMaxMessageSize?this.settings.webRtcMaxMessageSize:n,r=s.Buffer.from(t,t.byteLength-n,e);this.peer.write(r),n-=e}this.emit("bytes-uploaded",this,t.byteLength)}sendSegmentAbsent(e){this.sendCommand({c:o.SegmentAbsent,i:e})}requestSegment(e){if(this.downloadingSegmentId)throw new Error("A segment is already downloading: "+this.downloadingSegmentId);this.sendCommand({c:o.SegmentRequest,i:e}),this.downloadingSegmentId=e,this.runResponseTimeoutTimer()}cancelSegmentRequest(){let e;if(this.downloadingSegmentId){const t=this.downloadingSegmentId;e=this.downloadingSegment?this.downloadingSegment.pieces:void 0,this.terminateSegmentRequest(),this.sendCommand({c:o.CancelSegmentRequest,i:t})}return e}runResponseTimeoutTimer(){this.timer=setTimeout(()=>{if(this.timer=null,!this.downloadingSegmentId)return;const e=this.downloadingSegmentId;this.cancelSegmentRequest(),this.emit("segment-timeout",this,e)},this.settings.p2pSegmentDownloadTimeout)}cancelResponseTimeoutTimer(){this.timer&&(clearTimeout(this.timer),this.timer=null)}terminateSegmentRequest(){this.downloadingSegmentId=null,this.downloadingSegment=null,this.cancelResponseTimeoutTimer()}}},{"./stringly-typed-event-emitter":9,buffer:16,debug:"debug"}],7:[function(e,t,n){"use strict";Object.defineProperty(n,"__esModule",{value:!0});const r=e("debug"),i=e("bittorrent-tracker/client"),s=e("./stringly-typed-event-emitter"),o=e("./media-peer"),a=e("buffer"),u=e("sha.js/sha1"),c=e("./index"),h=2,l=`-WW${c.version.replace(/\d*./g,e=>`0${parseInt(e,10)%100}`.slice(-2)).slice(0,4)}-`;class d{constructor(e,t){this.peerId=e,this.segment=t}}n.P2PMediaManager=class extends s.STEEmitter{constructor(e,t){super(),this.sementsStorage=e,this.settings=t,this.trackerClient=null,this.peers=new Map,this.peerCandidates=new Map,this.peerSegmentRequests=new Map,this.streamSwarmId=null,this.debug=r("p2pml:p2p-media-manager"),this.pendingTrackerClient=null,this.onTrackerError=e=>{this.debug("tracker error",e)},this.onTrackerWarning=e=>{this.debug("tracker warning",e)},this.onTrackerUpdate=e=>{this.debug("tracker update",e),this.emit("tracker-update",e)},this.onTrackerPeer=e=>{if(this.debug("tracker peer",e.id,e),this.peers.has(e.id))return this.debug("tracker peer already connected",e.id,e),void e.destroy();const t=new o.MediaPeer(e,this.settings);t.on("connect",this.onPeerConnect),t.on("close",this.onPeerClose),t.on("data-updated",this.onPeerDataUpdated),t.on("segment-request",this.onSegmentRequest),t.on("segment-loaded",this.onSegmentLoaded),t.on("segment-absent",this.onSegmentAbsent),t.on("segment-error",this.onSegmentError),t.on("segment-timeout",this.onSegmentTimeout),t.on("bytes-downloaded",this.onPieceBytesDownloaded),t.on("bytes-uploaded",this.onPieceBytesUploaded);let n=this.peerCandidates.get(t.id);n||(n=[],this.peerCandidates.set(t.id,n)),n.push(t)},this.onPieceBytesDownloaded=(e,t)=>{this.emit("bytes-downloaded",t,e.id)},this.onPieceBytesUploaded=(e,t)=>{this.emit("bytes-uploaded",t,e.id)},this.onPeerConnect=e=>{if(this.peers.get(e.id))return this.debug("tracker peer already connected (in peer connect)",e.id,e),void e.destroy();this.peers.set(e.id,e);const t=this.peerCandidates.get(e.id);if(t){for(const n of t)n!=e&&n.destroy();this.peerCandidates.delete(e.id)}this.emit("peer-connected",{id:e.id,remoteAddress:e.remoteAddress})},this.onPeerClose=e=>{if(this.peers.get(e.id)!=e){const t=this.peerCandidates.get(e.id);if(!t)return;const n=t.indexOf(e);return-1!=n&&t.splice(n,1),void(0==t.length&&this.peerCandidates.delete(e.id))}for(const[t,n]of this.peerSegmentRequests)n.peerId==e.id&&this.peerSegmentRequests.delete(t);this.peers.delete(e.id),this.emit("peer-data-updated"),this.emit("peer-closed",e.id)},this.onPeerDataUpdated=()=>{this.emit("peer-data-updated")},this.onSegmentRequest=async(e,t)=>{if(void 0===this.masterSwarmId)return;const n=await this.sementsStorage.getSegment(t,this.masterSwarmId);n?e.sendSegmentData(t,n.data):e.sendSegmentAbsent(t)},this.onSegmentLoaded=async(e,t,n)=>{const r=this.peerSegmentRequests.get(t);if(!r)return;const i=r.segment;if(this.settings.segmentValidator)try{await this.settings.segmentValidator(Object.assign(Object.assign({},i),{data:n}),"p2p",e.id)}catch(n){return this.debug("segment validator failed",n),this.peerSegmentRequests.delete(t),this.emit("segment-error",i,n,e.id),void this.onPeerClose(e)}this.peerSegmentRequests.delete(t),this.emit("segment-loaded",i,n,e.id)},this.onSegmentAbsent=(e,t)=>{this.peerSegmentRequests.delete(t),this.emit("peer-data-updated")},this.onSegmentError=(e,t,n)=>{const r=this.peerSegmentRequests.get(t);r&&(this.peerSegmentRequests.delete(t),this.emit("segment-error",r.segment,n,e.id))},this.onSegmentTimeout=(e,t)=>{const n=this.peerSegmentRequests.get(t);n&&(this.peerSegmentRequests.delete(t),e.destroy(),this.peers.delete(n.peerId)&&this.emit("peer-data-updated"))},this.peerId=t.useP2P?function(){const e="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789";let t=l;for(let n=0;n<20-l.length;n++)t+=e.charAt(Math.floor(Math.random()*e.length));return(new TextEncoder).encode(t).buffer}():new ArrayBuffer(0),this.debug.enabled&&this.debug("peer ID",this.getPeerId(),(new TextDecoder).decode(this.peerId))}getPeers(){return this.peers}getPeerId(){return a.Buffer.from(this.peerId).toString("hex")}async setStreamSwarmId(e,t){if(this.streamSwarmId===e)return;this.destroy(!0),this.streamSwarmId=e,this.masterSwarmId=t,this.debug("stream swarm ID",this.streamSwarmId),this.pendingTrackerClient={isDestroyed:!1};const n=this.pendingTrackerClient,r=(new u).update(h+this.streamSwarmId).digest();n.isDestroyed?null!=this.trackerClient&&(this.trackerClient.destroy(),this.trackerClient=null):(this.pendingTrackerClient=null,this.createClient(r))}createClient(e){if(!this.settings.useP2P)return;const t={infoHash:a.Buffer.from(e,0,20),peerId:a.Buffer.from(this.peerId,0,20),announce:this.settings.trackerAnnounce,rtcConfig:this.settings.rtcConfig,port:6881,getAnnounceOpts:()=>({numwant:this.settings.peerRequestsPerAnnounce})};let n=this.trackerClient;this.trackerClient=new i(t),this.trackerClient.on("error",this.onTrackerError),this.trackerClient.on("warning",this.onTrackerWarning),this.trackerClient.on("update",this.onTrackerUpdate),this.trackerClient.on("peer",this.onTrackerPeer),this.trackerClient.start(),null!=n&&(n.destroy(),n=null)}download(e){if(this.isDownloading(e))return!1;const t=[];for(const n of this.peers.values())null==n.getDownloadingSegmentId()&&n.getSegmentsMap().get(e.id)===o.MediaPeerSegmentStatus.Loaded&&t.push(n);if(0===t.length)return!1;const n=t[Math.floor(Math.random()*t.length)];return n.requestSegment(e.id),this.peerSegmentRequests.set(e.id,new d(n.id,e)),!0}abort(e){let t;const n=this.peerSegmentRequests.get(e.id);if(n){const r=this.peers.get(n.peerId);r&&(t=r.cancelSegmentRequest()),this.peerSegmentRequests.delete(e.id)}return t}isDownloading(e){return this.peerSegmentRequests.has(e.id)}getActiveDownloadsCount(){return this.peerSegmentRequests.size}destroy(e=!1){this.streamSwarmId=null,this.trackerClient&&(this.trackerClient.stop(),e?(this.trackerClient.removeAllListeners("error"),this.trackerClient.removeAllListeners("warning"),this.trackerClient.removeAllListeners("update"),this.trackerClient.removeAllListeners("peer")):(this.trackerClient.destroy(),this.trackerClient=null)),this.pendingTrackerClient&&(this.pendingTrackerClient.isDestroyed=!0,this.pendingTrackerClient=null),this.peers.forEach(e=>e.destroy()),this.peers.clear(),this.peerSegmentRequests.clear();for(const e of this.peerCandidates.values())for(const t of e)t.destroy();this.peerCandidates.clear()}sendSegmentsMapToAll(e){this.peers.forEach(t=>t.sendSegmentsMap(e))}sendSegmentsMap(e,t){const n=this.peers.get(e);n&&n.sendSegmentsMap(t)}getOvrallSegmentsMap(){const e=new Map;for(const t of this.peers.values())for(const[n,r]of t.getSegmentsMap())r===o.MediaPeerSegmentStatus.Loaded?e.set(n,o.MediaPeerSegmentStatus.Loaded):e.get(n)||e.set(n,o.MediaPeerSegmentStatus.LoadingByHttp);return e}}},{"./index":"p2p-media-loader-core","./media-peer":6,"./stringly-typed-event-emitter":9,"bittorrent-tracker/client":11,buffer:16,debug:"debug","sha.js/sha1":43}],8:[function(e,t,n){"use strict";Object.defineProperty(n,"__esModule",{value:!0});n.SegmentsMemoryStorage=class{constructor(e){this.settings=e,this.cache=new Map}async storeSegment(e){this.cache.set(e.id,{segment:e,lastAccessed:performance.now()})}async getSegmentsMap(e){return this.cache}async getSegment(e,t){const n=this.cache.get(e);if(void 0!==n)return n.lastAccessed=performance.now(),n.segment}async hasSegment(e,t){return this.cache.has(e)}async clean(e,t){const n=[],r=[],i=performance.now();for(const e of this.cache.values())i-e.lastAccessed>this.settings.cachedSegmentExpiration?n.push(e.segment.id):r.push(e);let s=r.length-this.settings.cachedSegmentsCount;if(s>0){r.sort((e,t)=>e.lastAccessed-t.lastAccessed);for(const e of r)if((void 0===t||!t(e.segment.id))&&(n.push(e.segment.id),0==--s))break}return n.forEach(e=>this.cache.delete(e)),n.length>0}async destroy(){this.cache.clear()}}},{}],9:[function(e,t,n){"use strict";Object.defineProperty(n,"__esModule",{value:!0});const r=e("events");n.STEEmitter=class extends r.EventEmitter{on(e,t){return super.on(e,t)}emit(e,...t){return super.emit(e,...t)}}},{events:"events"}],10:[function(e,t,n){"use strict";n.byteLength=function(e){var t=c(e),n=t[0],r=t[1];return 3*(n+r)/4-r},n.toByteArray=function(e){var t,n,r=c(e),o=r[0],a=r[1],u=new s(function(e,t,n){return 3*(t+n)/4-n}(0,o,a)),h=0,l=a>0?o-4:o;for(n=0;n<l;n+=4)t=i[e.charCodeAt(n)]<<18|i[e.charCodeAt(n+1)]<<12|i[e.charCodeAt(n+2)]<<6|i[e.charCodeAt(n+3)],u[h++]=t>>16&255,u[h++]=t>>8&255,u[h++]=255&t;2===a&&(t=i[e.charCodeAt(n)]<<2|i[e.charCodeAt(n+1)]>>4,u[h++]=255&t);1===a&&(t=i[e.charCodeAt(n)]<<10|i[e.charCodeAt(n+1)]<<4|i[e.charCodeAt(n+2)]>>2,u[h++]=t>>8&255,u[h++]=255&t);return u},n.fromByteArray=function(e){for(var t,n=e.length,i=n%3,s=[],o=0,a=n-i;o<a;o+=16383)s.push(h(e,o,o+16383>a?a:o+16383));1===i?(t=e[n-1],s.push(r[t>>2]+r[t<<4&63]+"==")):2===i&&(t=(e[n-2]<<8)+e[n-1],s.push(r[t>>10]+r[t>>4&63]+r[t<<2&63]+"="));return s.join("")};for(var r=[],i=[],s="undefined"!=typeof Uint8Array?Uint8Array:Array,o="ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789+/",a=0,u=o.length;a<u;++a)r[a]=o[a],i[o.charCodeAt(a)]=a;function c(e){var t=e.length;if(t%4>0)throw new Error("Invalid string. Length must be a multiple of 4");var n=e.indexOf("=");return-1===n&&(n=t),[n,n===t?0:4-n%4]}function h(e,t,n){for(var i,s,o=[],a=t;a<n;a+=3)i=(e[a]<<16&16711680)+(e[a+1]<<8&65280)+(255&e[a+2]),o.push(r[(s=i)>>18&63]+r[s>>12&63]+r[s>>6&63]+r[63&s]);return o.join("")}i["-".charCodeAt(0)]=62,i["_".charCodeAt(0)]=63},{}],11:[function(e,t,n){(function(n,r){const i=e("debug")("bittorrent-tracker:client"),s=e("events"),o=e("once"),a=e("run-parallel"),u=e("simple-peer"),c=e("uniq"),h=e("./lib/common"),l=e("./lib/client/http-tracker"),d=e("./lib/client/udp-tracker"),f=e("./lib/client/websocket-tracker");class p extends s{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"),i("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.length-1]&&(e=e.substring(0,e.length-1)),e)),t=c(t);const s=!1!==this._wrtc&&(!!this._wrtc||u.WEBRTC_SUPPORT),o=e=>{n.nextTick(()=>{this.emit("warning",e)})};this._trackers=t.map(e=>{let t;try{t=new URL(e)}catch(t){return o(new Error(`Invalid tracker URL: ${e}`)),null}const n=t.port;if(n<0||n>65535)return o(new Error(`Invalid tracker port: ${e}`)),null;const r=t.protocol;return"http:"!==r&&"https:"!==r||"function"!=typeof l?"udp:"===r&&"function"==typeof d?new d(this,e):"ws:"!==r&&"wss:"!==r||!s?(o(new Error(`Unsupported tracker protocol: ${e}`)),null):"ws:"===r&&"undefined"!=typeof window&&"https:"===window.location.protocol?(o(new Error(`Unsupported tracker protocol: ${e}`)),null):new f(this,e):new l(this,e)}).filter(Boolean)}start(e){(e=this._defaultAnnounceOpts(e)).event="started",i("send `start` %o",e),this._announce(e),this._trackers.forEach(e=>{e.setInterval()})}stop(e){(e=this._defaultAnnounceOpts(e)).event="stopped",i("send `stop` %o",e),this._announce(e)}complete(e){e||(e={}),(e=this._defaultAnnounceOpts(e)).event="completed",i("send `complete` %o",e),this._announce(e)}update(e){(e=this._defaultAnnounceOpts(e)).event&&delete e.event,i("send `update` %o",e),this._announce(e)}_announce(e){this._trackers.forEach(t=>{t.announce(e)})}scrape(e){i("send `scrape`"),e||(e={}),this._trackers.forEach(t=>{t.scrape(e)})}setInterval(e){i("setInterval %d",e),this._trackers.forEach(t=>{t.setInterval(e)})}destroy(e){if(this.destroyed)return;this.destroyed=!0,i("destroy");const t=this._trackers.map(e=>t=>{e.destroy(t)});a(t,e),this._trackers=[],this._getAnnounceOpts=null}_defaultAnnounceOpts(e={}){return null==e.numwant&&(e.numwant=h.DEFAULT_ANNOUNCE_PEERS),null==e.uploaded&&(e.uploaded=0),null==e.downloaded&&(e.downloaded=0),this._getAnnounceOpts&&(e=Object.assign({},e,this._getAnnounceOpts())),e}}p.scrape=(e,t)=>{if(t=o(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}),i=new p(n);i.once("error",t),i.once("warning",t);let s=Array.isArray(e.infoHash)?e.infoHash.length:1;const a={};return i.on("scrape",e=>{if(s-=1,a[e.infoHash]=e,0===s){i.destroy();const e=Object.keys(a);1===e.length?t(null,a[e[0]]):t(null,a)}}),e.infoHash=Array.isArray(e.infoHash)?e.infoHash.map(e=>r.from(e,"hex")):r.from(e.infoHash,"hex"),i.scrape({infoHash:e.infoHash}),i},t.exports=p}).call(this,e("_process"),e("buffer").Buffer)},{"./lib/client/http-tracker":15,"./lib/client/udp-tracker":15,"./lib/client/websocket-tracker":13,"./lib/common":14,_process:23,buffer:16,debug:"debug",events:"events",once:22,"run-parallel":40,"simple-peer":44,uniq:47}],12:[function(e,t,n){const r=e("events");t.exports=class extends r{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:"events"}],13:[function(e,t,n){const r=e("debug")("bittorrent-tracker:websocket-tracker"),i=e("simple-peer"),s=e("randombytes"),o=e("simple-websocket"),a=e("../common"),u=e("./tracker"),c={},h=1e4,l=18e5,d=12e4,f=5e4;class p extends u{constructor(e,t,n){super(e,t),r("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=g){if(this.destroyed)return e(null);this.destroyed=!0,clearInterval(this.interval),clearTimeout(this.reconnectTimer);for(const e in this.peers){const t=this.peers[e];clearTimeout(t.trackerTimeout),t.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,c[this.announceUrl]&&(c[this.announceUrl].consumers-=1),c[this.announceUrl].consumers>0)return e();let t=c[this.announceUrl];if(delete c[this.announceUrl],t.on("error",g),t.once("close",e),!this.expectingResponse)return r();var n=setTimeout(r,a.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=c[this.announceUrl],this.socket?(c[this.announceUrl].consumers+=1,this.socket.connected&&this._onSocketConnectBound()):(this.socket=c[this.announceUrl]=new o(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 r("ignoring websocket data from %s for %s (looking for %s: reused socket)",this.announceUrl,a.binaryToHex(e.info_hash),this.client.infoHash);if(e.peer_id&&e.peer_id===this.client._peerIdBinary)return;r("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 i=e.interval||e["min interval"];i&&this.setInterval(1e3*i);const s=e["tracker id"];if(s&&(this._trackerId=s),null!=e.complete){const t=Object.assign({},e,{announce:this.announceUrl,infoHash:a.binaryToHex(e.info_hash)});this.client.emit("update",t)}let o;if(e.offer&&e.peer_id&&(r("creating peer (from remote offer)"),(o=this._createPeer()).id=a.binaryToHex(e.peer_id),o.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)}),o.signal(e.offer),this.client.emit("peer",o)),e.answer&&e.peer_id){const t=a.binaryToHex(e.offer_id);(o=this.peers[t])?(o.id=a.binaryToHex(e.peer_id),o.signal(e.answer),this.client.emit("peer",o),clearTimeout(o.trackerTimeout),o.trackerTimeout=null,delete this.peers[t]):r(`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:a.binaryToHex(t)});this.client.emit("scrape",n)}):this.client.emit("warning",new Error("invalid scrape response"))}_onSocketClose(){this.destroyed||(this.destroy(),this._startReconnectTimer())}_onSocketError(e){this.destroyed||(this.destroy(),this.client.emit("warning",e),this._startReconnectTimer())}_startReconnectTimer(){const e=Math.floor(Math.random()*d)+Math.min(Math.pow(2,this.retries)*h,l);this.reconnecting=!0,clearTimeout(this.reconnectTimer),this.reconnectTimer=setTimeout(()=>{this.retries++,this._openSocket()},e),this.reconnectTimer.unref&&this.reconnectTimer.unref(),r("reconnecting socket in %s ms",e)}_send(e){if(this.destroyed)return;this.expectingResponse=!0;const t=JSON.stringify(e);r("send %s",t),this.socket.send(t)}_generateOffers(e,t){const n=this,i=[];r("generating %s offers",e);for(let t=0;t<e;++t)o();function o(){const e=s(20).toString("hex");r("creating peer (from _generateOffers)");const t=n.peers[e]=n._createPeer({initiator:!0});t.once("signal",t=>{i.push({offer:t,offer_id:a.hexToBinary(e)}),u()}),t.trackerTimeout=setTimeout(()=>{r("tracker timeout: destroying 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0!==e.allowHalfTrickle&&e.allowHalfTrickle,t.iceCompleteTimeout=e.iceCompleteTimeout||u,t.destroyed=!1,t._connected=!1,t.remoteAddress=void 0,t.remoteFamily=void 0,t.remotePort=void 0,t.localAddress=void 0,t.localFamily=void 0,t.localPort=void 0,t._wrtc=e.wrtc&&"object"==typeof e.wrtc?e.wrtc:i(),!t._wrtc)throw"undefined"==typeof window?l("No WebRTC support: Specify `opts.wrtc` option in this environment","ERR_WEBRTC_SUPPORT"):l("No WebRTC support: Not a supported browser","ERR_WEBRTC_SUPPORT");t._pcReady=!1,t._channelReady=!1,t._iceComplete=!1,t._iceCompleteTimer=null,t._channel=null,t._pendingCandidates=[],t._isNegotiating=!t.initiator,t._batchedNegotiation=!1,t._queuedNegotiation=!1,t._sendersAwaitingStable=[],t._senderMap=new Map,t._firstStable=!0,t._closingInterval=null,t._remoteTracks=[],t._remoteStreams=[],t._chunk=null,t._cb=null,t._interval=null;try{t._pc=new t._wrtc.RTCPeerConnection(t.config)}catch(e){return void setTimeout(()=>t.destroy(e),0)}t._isReactNativeWebrtc="number"==typeof t._pc._peerConnectionId,t._pc.oniceconnectionstatechange=function(){t._onIceStateChange()},t._pc.onicegatheringstatechange=function(){t._onIceStateChange()},t._pc.onsignalingstatechange=function(){t._onSignalingStateChange()},t._pc.onicecandidate=function(e){t._onIceCandidate(e)},t.initiator?t._setupData({channel:t._pc.createDataChannel(t.channelName,t.channelConfig)}):t._pc.ondatachannel=function(e){t._setupData(e)},t.streams&&t.streams.forEach(function(e){t.addStream(e)}),t._pc.ontrack=function(e){t._onTrack(e)},t.initiator&&t._needsNegotiation(),t._onFinishBound=function(){t._onFinish()},t.once("finish",t._onFinishBound)}function h(e){return e.replace(/a=ice-options:trickle\s\n/g,"")}function l(e,t){var n=new Error(e);return n.code=t,n}s(c,a.Duplex),c.WEBRTC_SUPPORT=!!i(),c.config={iceServers:[{urls:"stun:stun.l.google.com:19302"},{urls:"stun:global.stun.twilio.com:3478?transport=udp"}],sdpSemantics:"unified-plan"},c.channelConfig={},Object.defineProperty(c.prototype,"bufferSize",{get:function(){return this._channel&&this._channel.bufferedAmount||0}}),Object.defineProperty(c.prototype,"connected",{get:function(){return this._connected&&"open"===this._channel.readyState}}),c.prototype.address=function(){return{port:this.localPort,family:this.localFamily,address:this.localAddress}},c.prototype.signal=function(e){var t=this;if(t.destroyed)throw l("cannot signal after peer is destroyed","ERR_SIGNALING");if("string"==typeof e)try{e=JSON.parse(e)}catch(t){e={}}t._debug("signal()"),e.renegotiate&&t.initiator&&(t._debug("got request to renegotiate"),t._needsNegotiation()),e.transceiverRequest&&t.initiator&&(t._debug("got request for transceiver"),t.addTransceiver(e.transceiverRequest.kind,e.transceiverRequest.init)),e.candidate&&(t._pc.localDescription&&t._pc.localDescription.type&&t._pc.remoteDescription&&t._pc.remoteDescription.type?t._addIceCandidate(e.candidate):t._pendingCandidates.push(e.candidate)),e.sdp&&t._pc.setRemoteDescription(new t._wrtc.RTCSessionDescription(e)).then(function(){t.destroyed||(t._pendingCandidates.forEach(function(e){t._addIceCandidate(e)}),t._pendingCandidates=[],"offer"===t._pc.remoteDescription.type&&t._createAnswer())}).catch(function(e){t.destroy(l(e,"ERR_SET_REMOTE_DESCRIPTION"))}),e.sdp||e.candidate||e.renegotiate||e.transceiverRequest||t.destroy(l("signal() called with invalid signal data","ERR_SIGNALING"))},c.prototype._addIceCandidate=function(e){var t=this,n=new t._wrtc.RTCIceCandidate(e);t._pc.addIceCandidate(n).catch(function(e){var r;!n.address||n.address.endsWith(".local")?(r="Ignoring unsupported ICE candidate.",console.warn(r)):t.destroy(l(e,"ERR_ADD_ICE_CANDIDATE"))})},c.prototype.send=function(e){this._channel.send(e)},c.prototype.addTransceiver=function(e,t){if(this._debug("addTransceiver()"),this.initiator)try{this._pc.addTransceiver(e,t),this._needsNegotiation()}catch(e){this.destroy(e)}else this.emit("signal",{transceiverRequest:{kind:e,init:t}})},c.prototype.addStream=function(e){var t=this;t._debug("addStream()"),e.getTracks().forEach(function(n){t.addTrack(n,e)})},c.prototype.addTrack=function(e,t){this._debug("addTrack()");var n=this._senderMap.get(e)||new Map,r=n.get(t);r?r.removed?this.destroy(l("Track has been removed. You should enable/disable tracks that you want to re-add.","ERR_SENDER_REMOVED")):this.destroy(l("Track has already been added to that stream.","ERR_SENDER_ALREADY_ADDED")):(r=this._pc.addTrack(e,t),n.set(t,r),this._senderMap.set(e,n),this._needsNegotiation())},c.prototype.replaceTrack=function(e,t,n){this._debug("replaceTrack()");var r=this._senderMap.get(e),i=r?r.get(n):null;i||this.destroy(l("Cannot replace track that was never added.","ERR_TRACK_NOT_ADDED")),t&&this._senderMap.set(t,r),null!=i.replaceTrack?i.replaceTrack(t):this.destroy(l("replaceTrack is not supported in this browser","ERR_UNSUPPORTED_REPLACETRACK"))},c.prototype.removeTrack=function(e,t){this._debug("removeSender()");var n=this._senderMap.get(e),r=n?n.get(t):null;r||this.destroy(l("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(e)}this._needsNegotiation()},c.prototype.removeStream=function(e){var t=this;t._debug("removeSenders()"),e.getTracks().forEach(function(n){t.removeTrack(n,e)})},c.prototype._needsNegotiation=function(){var e=this;e._debug("_needsNegotiation"),e._batchedNegotiation||(e._batchedNegotiation=!0,setTimeout(function(){e._batchedNegotiation=!1,e._debug("starting batched negotiation"),e.negotiate()},0))},c.prototype.negotiate=function(){var e=this;e.initiator?e._isNegotiating?(e._queuedNegotiation=!0,e._debug("already negotiating, queueing")):(e._debug("start negotiation"),setTimeout(()=>{e._createOffer()},0)):e._isNegotiating||(e._debug("requesting negotiation from initiator"),e.emit("signal",{renegotiate:!0})),e._isNegotiating=!0},c.prototype.destroy=function(e){this._destroy(e,function(){})},c.prototype._destroy=function(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.destroyed=!0,this._connected=!1,this._pcReady=!1,this._channelReady=!1,this._remoteTracks=null,this._remoteStreams=null,this._senderMap=null,clearInterval(this._closingInterval),this._closingInterval=null,clearInterval(this._interval),this._interval=null,this._chunk=null,this._cb=null,this._onFinishBound&&this.removeListener("finish",this._onFinishBound),this._onFinishBound=null,this._channel){try{this._channel.close()}catch(e){}this._channel.onmessage=null,this._channel.onopen=null,this._channel.onclose=null,this._channel.onerror=null}if(this._pc){try{this._pc.close()}catch(e){}this._pc.oniceconnectionstatechange=null,this._pc.onicegatheringstatechange=null,this._pc.onsignalingstatechange=null,this._pc.onicecandidate=null,this._pc.ontrack=null,this._pc.ondatachannel=null}this._pc=null,this._channel=null,e&&this.emit("error",e),this.emit("close"),t()}},c.prototype._setupData=function(e){var t=this;if(!e.channel)return t.destroy(l("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(l(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)},c.prototype._read=function(){},c.prototype._write=function(e,t,n){if(this.destroyed)return n(l("cannot write after peer is destroyed","ERR_DATA_CHANNEL"));if(this._connected){try{this.send(e)}catch(e){return this.destroy(l(e,"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},c.prototype._onFinish=function(){var e=this;function t(){setTimeout(function(){e.destroy()},1e3)}e.destroyed||(e._connected?t():e.once("connect",t))},c.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))},c.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=h(t.sdp)),t.sdp=e.sdpTransform(t.sdp),e._pc.setLocalDescription(t).then(function(){if(e._debug("createOffer success"),e.destroyed)return;e.trickle||e._iceComplete?n():e.once("_iceComplete",n)}).catch(function(t){e.destroy(l(t,"ERR_SET_LOCAL_DESCRIPTION"))}))}).catch(function(t){e.destroy(l(t,"ERR_CREATE_OFFER"))})},c.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))})},c.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=h(t.sdp)),t.sdp=e.sdpTransform(t.sdp),e._pc.setLocalDescription(t).then(function(){if(e.destroyed)return;e.trickle||e._iceComplete?n():e.once("_iceComplete",n)}).catch(function(t){e.destroy(l(t,"ERR_SET_LOCAL_DESCRIPTION"))}))}).catch(function(t){e.destroy(l(t,"ERR_CREATE_ANSWER"))})},c.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(l("Ice connection failed.","ERR_ICE_CONNECTION_FAILURE")),"closed"===e&&this.destroy(l("Ice connection closed.","ERR_ICE_CONNECTION_CLOSED"))}},c.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,[])},c.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={},s={},o={},a=!1;if(r.forEach(function(e){"remotecandidate"!==e.type&&"remote-candidate"!==e.type||(i[e.id]=e),"localcandidate"!==e.type&&"local-candidate"!==e.type||(s[e.id]=e),"candidatepair"!==e.type&&"candidate-pair"!==e.type||(o[e.id]=e)}),r.forEach(function(e){"transport"===e.type&&e.selectedCandidatePairId&&c(o[e.selectedCandidatePairId]),("googCandidatePair"===e.type&&"true"===e.googActiveConnection||("candidatepair"===e.type||"candidate-pair"===e.type)&&e.selected)&&c(e)}),a||Object.keys(o).length&&!Object.keys(s).length){if(e._connecting=!1,e._connected=!0,e._chunk){try{e.send(e._chunk)}catch(n){return e.destroy(l(n,"ERR_DATA_CHANNEL"))}e._chunk=null,e._debug('sent chunk from "write before connect"');var u=e._cb;e._cb=null,u(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 c(t){a=!0;var n=s[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)}})}())},c.prototype._onInterval=function(){!this._cb||!this._channel||this._channel.bufferedAmount>65536||this._onChannelBufferedAmountLow()},c.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))},c.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())},c.prototype._onChannelMessage=function(e){if(!this.destroyed){var t=e.data;t instanceof ArrayBuffer&&(t=n.from(t)),this.push(t)}},c.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)}},c.prototype._onChannelOpen=function(){this._connected||this.destroyed||(this._debug("on channel open"),this._channelReady=!0,this._maybeReady())},c.prototype._onChannelClose=function(){this.destroyed||(this._debug("on channel 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