@swarmcloud/hls/p2p-engine.es.min.js

Let your viewers become your unlimitedly scalable CDN.

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0!==e.allowHalfTrickle&&e.allowHalfTrickle,this.iceCompleteTimeout=e.iceCompleteTimeout||5e3,this.destroyed=!1,this.destroying=!1,this._connected=!1,this.remoteAddress=void 0,this.remoteFamily=void 0,this.remotePort=void 0,this.localAddress=void 0,this.localFamily=void 0,this.localPort=void 0,this._wrtc=y(),this._pcReady=!1,this._channelReady=!1,this._iceComplete=!1,this._iceCompleteTimer=null,this._channel=null,this._pendingCandidates=[],this._pendingData=[],this._isNegotiating=!1,this._firstNegotiation=!0,this._batchedNegotiation=!1,this._queuedNegotiation=!1,this._senderMap=new Map,this._closingInterval=null,this._chunk=null,this._cb=null,this._interval=null;try{this._pc=new this._wrtc.RTCPeerConnection(this.config)}catch(e){return void 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this._pendingCandidates.push(e.candidate);e.sdp&&this._pc.setRemoteDescription(new this._wrtc.RTCSessionDescription(e)).then((()=>{this.destroyed||(this._pendingCandidates.forEach((e=>{try{this._addIceCandidate(e)}catch(e){}})),this._pendingCandidates=[],"offer"===this._pc.remoteDescription.type&&this._createAnswer())})).catch((e=>{e.debug=!0,this.destroy(e)})),e.sdp||e.candidate||e.renegotiate||e.transceiverRequest||this.destroy(new Error("signal() called with invalid signal data"))}}_addIceCandidate(e){const t=new this._wrtc.RTCIceCandidate(e);this._pc.addIceCandidate(t).catch((e=>{var s;!t.address||t.address.endsWith(".local")?(s="Ignoring unsupported ICE candidate.",console.warn(s)):(e.debug=!0,this.destroy(e))}))}send(e){if("string"==typeof e){RTCDataChannel.prototype.send.toString().includes("[native code]")&&this._channel.send(e)}else 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this.destroy(new Error("Data channel event is missing `channel` property"));this._channel=e.channel,this._channel.binaryType="arraybuffer","number"==typeof this._channel.bufferedAmountLowThreshold&&(this._channel.bufferedAmountLowThreshold=X),this.channelName=this._channel.label,this._channel.onmessage=e=>{this._onChannelMessage(e)},this._channel.onbufferedamountlow=()=>{this._onChannelBufferedAmountLow()},this._channel.onopen=()=>{this._onChannelOpen()},this._channel.onclose=()=>{this._onChannelClose()},this._channel.onerror=e=>{e.debug=!0,this.destroy(e)};let t=!1;this._closingInterval=setInterval((()=>{this._channel&&"closing"===this._channel.readyState?(t&&this._onChannelClose(),t=!0):t=!1}),5e3)}get isBufferedAmountHigh(){return this._channel.bufferedAmount>X}write(e,t){if(this.destroyed)return t(new Error("cannot write after peer is destroyed"));if(this._connected){try{this.send(e)}catch(e){return this.destroy(e)}this.isBufferedAmountHigh?this._cb=t:t(null)}else this._chunk=e,this._cb=t}_startIceCompleteTimeout(){this.destroyed||this._iceCompleteTimer||(this._iceCompleteTimer=setTimeout((()=>{this._iceComplete||(this._iceComplete=!0,this.emit("iceTimeout"),this.emit("_iceComplete"))}),this.iceCompleteTimeout))}_createOffer(){this.destroyed||this._pc.createOffer(this.offerOptions).then((e=>{if(this.destroyed)return;this.trickle||this.allowHalfTrickle||(e.sdp=Y(e.sdp)),e.sdp=this.sdpTransform(e.sdp);const t=()=>{if(this.destroyed)return;const t=this._pc.localDescription||e;this.emit("signal",{type:t.type,sdp:t.sdp})};this._pc.setLocalDescription(e).then((()=>{this.destroyed||(this.trickle||this._iceComplete?t():this.once("_iceComplete",t))})).catch((e=>{this.destroy(e)}))})).catch((e=>{this.destroy(e)}))}_createAnswer(){this.destroyed||this._pc.createAnswer(this.answerOptions).then((e=>{if(this.destroyed)return;this.trickle||this.allowHalfTrickle||(e.sdp=Y(e.sdp)),e.sdp=this.sdpTransform(e.sdp);const t=()=>{if(this.destroyed)return;const t=this._pc.localDescription||e;this.emit("signal",{type:t.type,sdp:t.sdp})};this._pc.setLocalDescription(e).then((()=>{this.destroyed||(this.trickle||this._iceComplete?t():this.once("_iceComplete",t))})).catch((e=>{this.destroy(e)}))})).catch((e=>{this.destroy(e)}))}_onConnectionStateChange(){this.destroyed||"failed"===this._pc.connectionState&&this.destroy(new Error("Connection failed."))}_onIceStateChange(){if(this.destroyed)return;const e=this._pc.iceConnectionState,t=this._pc.iceGatheringState;this.emit("iceStateChange",e,t),"connected"!==e&&"completed"!==e||(this._pcReady=!0,this._maybeReady()),"failed"===e&&this.destroy(new Error("Ice connection failed.")),"closed"===e&&this.destroy(new Error("Ice connection closed."))}getStats(e){const t=e=>("[object Array]"===Object.prototype.toString.call(e.values)&&e.values.forEach((t=>{Object.assign(e,t)})),e);0===this._pc.getStats.length?this._pc.getStats().then((s=>{const i=[];s.forEach((e=>{i.push(t(e))})),e(null,i)}),(t=>e(t))):this._pc.getStats.length>0?this._pc.getStats((s=>{if(this.destroyed)return;const i=[];s.result().forEach((e=>{const s={};e.names().forEach((t=>{s[t]=e.stat(t)})),s.id=e.id,s.type=e.type,s.timestamp=e.timestamp,i.push(t(s))})),e(null,i)}),(t=>e(t))):e(null,[])}_maybeReady(){if(this._connected||this._connecting||!this._pcReady||!this._channelReady)return;this._connecting=!0;const e=()=>{this.destroyed||this.getStats(((t,s)=>{if(this.destroyed)return;t&&(s=[]);const i={},r={},n={};let o=!1;s.forEach((e=>{"remotecandidate"!==e.type&&"remote-candidate"!==e.type||(i[e.id]=e),"localcandidate"!==e.type&&"local-candidate"!==e.type||(r[e.id]=e),"candidatepair"!==e.type&&"candidate-pair"!==e.type||(n[e.id]=e)}));const a=e=>{o=!0;let t=r[e.localCandidateId];t&&(t.ip||t.address)?(this.localAddress=t.ip||t.address,this.localPort=Number(t.port)):t&&t.ipAddress?(this.localAddress=t.ipAddress,this.localPort=Number(t.portNumber)):"string"==typeof e.googLocalAddress&&(t=e.googLocalAddress.split(":"),this.localAddress=t[0],this.localPort=Number(t[1])),this.localAddress&&(this.localFamily=this.localAddress.includes(":")?"IPv6":"IPv4");let s=i[e.remoteCandidateId];s&&(s.ip||s.address)?(this.remoteAddress=s.ip||s.address,this.remotePort=Number(s.port)):s&&s.ipAddress?(this.remoteAddress=s.ipAddress,this.remotePort=Number(s.portNumber)):"string"==typeof e.googRemoteAddress&&(s=e.googRemoteAddress.split(":"),this.remoteAddress=s[0],this.remotePort=Number(s[1])),this.remoteAddress&&(this.remoteFamily=this.remoteAddress.includes(":")?"IPv6":"IPv4")};if(s.forEach((e=>{"transport"===e.type&&e.selectedCandidatePairId&&a(n[e.selectedCandidatePairId]),("googCandidatePair"===e.type&&"true"===e.googActiveConnection||("candidatepair"===e.type||"candidate-pair"===e.type)&&e.selected)&&a(e)})),o||Object.keys(n).length&&!Object.keys(r).length){if(this._connecting=!1,this._connected=!0,this._chunk){try{this.send(this._chunk)}catch(t){return this.destroy(t)}this._chunk=null;const e=this._cb;this._cb=null,e(null)}"number"!=typeof this._channel.bufferedAmountLowThreshold&&(this._interval=setInterval((()=>this._onInterval()),150),this._interval.unref&&this._interval.unref()),this.emit("connect");for(let e of this._pendingData)this.emit("data",e);this._pendingData=[]}else setTimeout(e,100)}))};e()}_onInterval(){!this._cb||!this._channel||this._channel.bufferedAmount>X||this._onChannelBufferedAmountLow()}_onSignalingStateChange(){this.destroyed||("stable"===this._pc.signalingState&&(this._isNegotiating=!1,this._queuedNegotiation?(this._queuedNegotiation=!1,this._needsNegotiation()):this.emit("negotiated")),this.emit("signalingStateChange",this._pc.signalingState))}_onIceCandidate(e){this.destroyed||(e.candidate&&this.trickle?this.emit("signal",{type:"candidate",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())}_onChannelMessage(e){if(this.destroyed)return;let t=e.data;t instanceof ArrayBuffer&&(t=o.h.from(t)),this._connected?this.emit("data",t):this._pendingData.length<10&&this._pendingData.push(t)}_onChannelBufferedAmountLow(){if(this.destroyed||!this._cb)return;const e=this._cb;this._cb=null,e(null)}_onChannelOpen(){this._connected||this.destroyed||(this._channelReady=!0,this._maybeReady())}_onChannelClose(){this.destroyed||this.destroy()}}J.config={iceServers:[{urls:["stun:stun.l.google.com:19302","stun:global.stun.twilio.com:3478"]}],sdpSemantics:"unified-plan"},J.channelConfig={};const Q=J;class K{constructor(e,t,s,i,r=0,n={}){this.sn=e,this.segId=t,this.data=s,this.fromPeerId=i,this.level=r,this.ext=n}get size(){return this.data.byteLength}get isSequential(){return this.sn>=0}}var Z=s(365),ee=s.n(Z);class te extends(n()){static get defaultPacketSize(){return d}static get VERSION(){return"8"}constructor(e,t,s,i,r,n={}){super(),this.channel=e.fetcher.channelId,this.logger=e.logger,this.config=r,this.isInitiator=i,this.options=n,this.intermediator=n.intermediator||null,this.signalMsgs=[],this.signalRejectCache="",this.assignPeerId(t,s),this.platform="unknown",this.super=!1,this.mobile=!1,this.mobileWeb=!1,this.mobileNet=!1,this.connected=!1,this.msgQueue=[],this.miss=0,this.notifySet=new Set,this.bufArr=[],this.packetSize=d,this.sendReqQueue=[],this.downloading=!1,this.uploading=!1,this.choked=!1,this.streamListeners=[],this.pieceMsg={},this.datasToSend=[],this.bytesUploaded=0,this.dataWriting=!1,this.timeSendRequest=0,this.timeReceiveData=0,this.timeSendPiece=0,this.weight=0,this.peersConnected=1,this.uploadSpeed=0,this.currentLevel=0,this.currentPos=0,this.currentLost=0,this._currentSharedPeers=[],this.notFoundPeers=new Set,this.gotAnswer=!1,this.gotOffer=!1,this.gotSignal=!1,this.sentSignal=!1,this.incomingSignal=[],this.signalName="",this.webRTCConfig={};const{stuns:o}=this.options;if(o&&o.length>0){const e=[];o.forEach((t=>{this.logger.info(`use stun ${t}`),e.push({urls:t})})),this.webRTCConfig.iceServers=e}this.config.webRTCConfig&&(this.webRTCConfig={...this.config.webRTCConfig,...this.webRTCConfig}),this.playlistMap=new Map,this._initPeerChannel(),this.notFatalClosed=!1,this.startSN=Number.MAX_SAFE_INTEGER,this.endSN=-1,this._loadedBytes=0}assignPeerId(t,s){this.remotePeerId=s,this.channelId=this.isInitiator?`${t}-${s}`:`${s}-${t}`,s&&this._startTimer(),setTimeout((()=>{this.signalMsgs.length>0&&this.emit(e.DC_SIGNAL_BATCH,this.signalMsgs)}),0)}_startTimer(){this.timeJoin=p(),this.dataExchangeTs=this.timeJoin,this.gotStatsTs=this.timeJoin,this.connTimeout=setTimeout((()=>{const{gotSignal:t,sentSignal:s,signalName:i}=this;this.logger.warn(`dc ${this.channelId} connection timeout, gotSignal ${t} sentSignal ${s} signalName ${i}`),this.emit(e.DC_TIMEOUT,{gotSignal:t,sentSignal:s,data:this.signalMsgs})}),this.isInitiator?15e3:12e3)}get isAvailable(){return this.downloadNum<2&&!this.choked}get isAvailableUrgently(){return!this.downloading&&!this.choked}cancelDownload(t,s,i){return!!this.downloading&&(!(this.bufSN>t)&&(!(this.streamListeners.length>0)&&(this.logger.info(`cancel download ${i} to ${this.remotePeerId} remain packets ${this.remainAttachments}`),this.timeReceiveData=0,this.sendJson({event:e.DC_PIECE_CANCEL,sn:t,level:s,seg_id:i}))))}_initPeerChannel(){const t=new Q({initiator:this.isInitiator,trickle:this.options.trickle||!1,config:this.webRTCConfig});this._datachannel=t,t.on("error",(t=>{let s=!0;(this.connected||this.notFatalClosed)&&(s=!1);let i=t.message;t.debug&&(i=`${i} raw: ${JSON.stringify(this.incomingSignal)}`),this.emit(e.DC_ERROR,s,i)})),t.on("signal",(t=>{t.candidate&&!t.candidate.candidate||(!this.useBackupSignal&&this.signalMsgs.length<10&&this.signalMsgs.push(t),this.sentSignal=!0,this.emit(e.DC_SIGNAL,t))}));t.on("connect",(()=>{for(this.logger.info(`datachannel CONNECTED from ${this.byPeerSignal?"peer":"server "+this.signalName} to ${this.remotePeerId}`),this.connected=!0,this.incomingSignal=[],clearTimeout(this.connTimeout),this.signalMsgs=[],this.emit(e.DC_OPEN);this.msgQueue.length>0;){let e=this.msgQueue.shift();this.emit(e.event,e)}})),t.on("data",(t=>{const{logger:s}=this;if("string"==typeof t){let i;try{i=JSON.parse(t)}catch(e){return void s.error(e)}if(!i)return void s.error("dc received string is null");if(!this.connected)return void this.msgQueue.push(i);let r,n=i.event;switch(r=n!==e.DC_PLAYLIST&&n!==e.DC_PEER_SIGNAL?`string: ${t}`:`event: ${n}`,s.debug(`datachannel receive ${r} from ${this.remotePeerId}`),n){case e.DC_HAVE:if(this.emit(i.event,i),!i.sn)return;this.config.live||(i.sn<this.startSN&&(this.startSN=i.sn),i.sn>this.endSN&&(this.endSN=i.sn));break;case e.DC_PIECE:this.downloading=!0,this.dataExchangeTs=p(),this.pieceMsg=i,this._prepareForBinary(i.attachments,i.seg_id,i.sn,i.size),this.emit(i.event,i);break;case e.DC_PIECE_CANCEL:s.info(`send queue ${this.datasToSend.length}, uploading ${this.uploading}`),this.emit(i.event,i),this.sendMsgPieceAbort("transfer canceled",i.seg_id);break;case e.DC_PIECE_NOT_FOUND:this._sendNextReq()||(this.downloading=!1),this.emit(i.event,i);break;case e.DC_REQUEST:this._handleRequestMsg(i);break;case e.DC_PIECE_ACK:this._handlePieceAck(i.seg_id,i.size,i.miss);break;case e.DC_STATS:this._handleStats(i);break;case e.DC_PLAYLIST:this.config.sharePlaylist&&this._handlePlaylist(i);break;case e.DC_METADATA:this._handleMetadata(i);break;case e.DC_PIECE_ABORT:this.downloading&&(this._notifyDownloadListenersAbort("aborted by upstream peer"),this.emit(e.DC_PIECE_ABORT,i)),this.downloading=!1,this.segId=void 0;break;case e.DC_CHOKE:s.info(`choke peer ${this.remotePeerId}`),this.choked=!0;break;case e.DC_UNCHOKE:s.info(`unchoke peer ${this.remotePeerId}`),this.choked=!1;break;case e.DC_CLOSE:this.emit(i.event,i.fatal||!1);break;default:this.emit(i.event,i)}}else{if(!t)return void s.error("datachannel on data is undefined!");if(!this.downloading){const i=`peer ${this.remotePeerId} not downloading, data size ${t.byteLength} pieceMsg ${JSON.stringify(this.pieceMsg)}`;return s.warn(i),void this.emit(e.DC_ERROR,!1,i)}this._handleBinaryMsg(t)}})),t.once("close",(()=>{this.emit(e.DC_CLOSE,!1)})),t.on("iceStateChange",((t,s)=>{this.connected&&"disconnected"===t&&(this.logger.warn(`${this.remotePeerId} disconnected`),this.emit(e.DC_DISCONNECT))}))}sendJson(t){if(!this.remotePeerId)return!1;t.event!==e.DC_PLAYLIST&&t.event!==e.DC_PEER_SIGNAL?this.logger.debug(`dc bufferSize ${this._datachannel.bufferSize} send ${JSON.stringify(t)} to ${this.remotePeerId}`):this.logger.debug(`dc send event ${t.event} to ${this.remotePeerId}`);const s=JSON.stringify(t);return s.length>d?(this.logger.error("string to send is too large"),!1):this.send(s,!1)}send(e,t=!0){return t?(this.datasToSend.push(e),this.dataWriting||this._sendDataSync(),!0):this.sendImmediately(e)}_sendDataSync(){if(!this._datachannel.connected||0===this.datasToSend.length)return void(this.dataWriting=!1);this.dataWriting=!0;const t=this.datasToSend.shift();t?("string"!=typeof t&&(this.bytesUploaded+=t.byteLength),this._datachannel.write(t,(t=>{if(t)return this.dataWriting=!1,void this.emit(e.DC_ERROR,!1,t.message);this._sendDataSync()}))):this.logger.error("sendDataSync data is undefined!")}sendImmediately(t){if(this._datachannel.connected)try{return this._datachannel.send(t),!0}catch(t){const s=`datachannel ${this.channelId} send data failed, close it`;this.emit(e.DC_ERROR,!1,s)}return!1}sendMsgHave(t,s,i={}){const r=i.reverse||void 0;delete i.reverse,this.sendJson({event:r?e.DC_HAVE_REVERSE:e.DC_HAVE,sn:t,seg_id:s,...i})}sendPieceNotFound(t,s,i={}){this.uploading=!1,this.sendJson({event:e.DC_PIECE_NOT_FOUND,seg_id:s||void 0,sn:t,...i})}sendMsgStats(t,s,i={}){const r={event:e.DC_STATS,total_conns:t,shared_peers:s,...i};this.sendJson(r)}sendMsgPlaylist(t,s,i){const r=this.playlistMap.get(t);if(r&&r.seq>=i)return;const n={event:e.DC_PLAYLIST,url:t,data:s,seq:i};this.playlistMap.set(t,{data:s,seq:i}),this.sendJson(n)}sendMsgSignal(t,s,i){return this.sendJson({event:e.DC_PEER_SIGNAL,action:"signal",to_peer_id:t,from_peer_id:s,data:i})}sendMsgSignalReject(t,s,i,r=!1){const n=`${t}-${s}`;return this.signalRejectCache===n||(this.signalRejectCache=n,this.sendJson({event:e.DC_PEER_SIGNAL,action:"reject",to_peer_id:t,from_peer_id:s,reason:i,fatal:r}))}sendMetaData(t,s,i,r,n=!1,o=[]){this.isInitiator&&(this.timeSendRequest=performance.now()),this.sendJson({event:e.DC_METADATA,field:t,platform:e.DC_PLAT_WEB,mobile:!!ee().isMobile(),mobile_net:n,channel:this.channel,version:"2.18.0",sequential:s,peers:i,region:r,shared_peers:o})}sendPartialBuffer(e,t,s={}){if(!this.sendMsgPiece(e,s))return!1;for(let e=0;e<t.length;e++)this.send(t[e]);return!0}sendMsgPiece(e,t={}){if(!this.uploading)return this.logger.info("not uploading, cancel send buffer"),!1;this.datasToSend=[],this.bytesUploaded=0,e.ext||(e.ext={}),e.ext.from&&t.from&&t.from.length<2500&&(t.from=`${e.ext.from}-${t.from}`),t.incompletes&&e.ext.incompletes&&(t.incompletes+=e.ext.incompletes),t=Object.assign({},e.ext,t);const s={...e,ext:t};return this.sendJson(s)}sendBuffer(t,s,i,r={}){const n=r.reverse||void 0;if(delete r.reverse,!i)return void this.logger.error("sendBuffer payload is undefined!");let o=i.byteLength,a=0,h=0;o%this.packetSize==0?h=o/this.packetSize:(h=Math.floor(o/this.packetSize)+1,a=o%this.packetSize);let l={event:e.DC_PIECE,attachments:h,seg_id:s,sn:t,level:r.level,size:o,reverse:n};if(delete r.level,!this.sendMsgPiece(l,r))return;const c=function(e,t,s,i){let r=[];if(i){let n;for(let i=0;i<s-1;i++)n=e.slice(i*t,(i+1)*t),r.push(n);n=e.slice(e.byteLength-i,e.byteLength),r.push(n)}else{let i;for(let n=0;n<s;n++)i=e.slice(n*t,(n+1)*t),r.push(i)}return r}(i,this.packetSize,h,a);this._sendBufferArray(c,n),this.uploading=!1,this.timeSendPiece=performance.now()}get downloadNum(){return this.downloading?this.sendReqQueue.length+1:0}get byPeerSignal(){return!!this.intermediator&&!this.signalName}get useBackupSignal(){ret