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Map,this._closingInterval=null,this._remoteTracks=[],this._remoteStreams=[],this._chunk=null,this._cb=null,this._interval=null;try{this._pc=new this._wrtc.RTCPeerConnection(this.config,this.proprietaryConstraints)}catch(e){return void this.destroy(l(e,"ERR_PC_CONSTRUCTOR"))}this._isReactNativeWebrtc="number"==typeof this._pc._peerConnectionId,this._pc.oniceconnectionstatechange=()=>{this._onIceStateChange()},this._pc.onicegatheringstatechange=()=>{this._onIceStateChange()},this._pc.onconnectionstatechange=()=>{this._onConnectionStateChange()},this._pc.onsignalingstatechange=()=>{this._onSignalingStateChange()},this._pc.onicecandidate=e=>{this._onIceCandidate(e)},"object"==typeof this._pc.peerIdentity&&this._pc.peerIdentity.catch(e=>{this.destroy(l(e,"ERR_PC_PEER_IDENTITY"))}),this.initiator||this.channelNegotiated?this._setupData({channel:this._pc.createDataChannel(this.channelName,this.channelConfig)}):this._pc.ondatachannel=e=>{this._setupData(e)},this.streams&&this.streams.forEach(e=>{this.addStream(e)}),this._pc.ontrack=e=>{this._onTrack(e)},this._debug("initial negotiation"),this._needsNegotiation(),this._onFinishBound=()=>{this._onFinish()},this.once("finish",this._onFinishBound)}get bufferSize(){return this._channel&&this._channel.bufferedAmount||0}get connected(){return this._connected&&"open"===this._channel.readyState}address(){return{port:this.localPort,family:this.localFamily,address:this.localAddress}}signal(e){if(!this.destroying){if(this.destroyed)throw l(new Error("cannot signal after peer is destroyed"),"ERR_DESTROYED");if("string"==typeof e)try{e=JSON.parse(e)}catch(n){e={}}this._debug("signal()"),e.renegotiate&&this.initiator&&(this._debug("got request to renegotiate"),this._needsNegotiation()),e.transceiverRequest&&this.initiator&&(this._debug("got request for transceiver"),this.addTransceiver(e.transceiverRequest.kind,e.transceiverRequest.init)),e.candidate&&(this._pc.remoteDescription&&this._pc.remoteDescription.type?this._addIceCandidate(e.candidate):this._pendingCandidates.push(e.candidate)),e.sdp&&this._pc.setRemoteDescription(new this._wrtc.RTCSessionDescription(e)).then(()=>{this.destroyed||(this._pendingCandidates.forEach(e=>{this._addIceCandidate(e)}),this._pendingCandidates=[],"offer"===this._pc.remoteDescription.type&&this._createAnswer())}).catch(e=>{this.destroy(l(e,"ERR_SET_REMOTE_DESCRIPTION"))}),e.sdp||e.candidate||e.renegotiate||e.transceiverRequest||this.destroy(l(new Error("signal() called with invalid signal data"),"ERR_SIGNALING"))}}_addIceCandidate(e){const n=new this._wrtc.RTCIceCandidate(e);this._pc.addIceCandidate(n).catch(e=>{!n.address||n.address.endsWith(".local")?o("Ignoring unsupported ICE candidate."):this.destroy(l(e,"ERR_ADD_ICE_CANDIDATE"))})}send(e){if(!this.destroying){if(this.destroyed)throw l(new Error("cannot send after peer is destroyed"),"ERR_DESTROYED");this._channel.send(e)}}addTransceiver(e,n){if(!this.destroying){if(this.destroyed)throw l(new Error("cannot addTransceiver after peer is destroyed"),"ERR_DESTROYED");if(this._debug("addTransceiver()"),this.initiator)try{this._pc.addTransceiver(e,n),this._needsNegotiation()}catch(e){this.destroy(l(e,"ERR_ADD_TRANSCEIVER"))}else this.emit("signal",{type:"transceiverRequest",transceiverRequest:{kind:e,init:n}})}}addStream(e){if(!this.destroying){if(this.destroyed)throw l(new Error("cannot addStream after peer is destroyed"),"ERR_DESTROYED");this._debug("addStream()"),e.getTracks().forEach(n=>{this.addTrack(n,e)})}}addTrack(e,n){if(this.destroying)return;if(this.destroyed)throw l(new Error("cannot addTrack after peer is destroyed"),"ERR_DESTROYED");this._debug("addTrack()");const t=this._senderMap.get(e)||new Map;let r=t.get(n);if(!r)r=this._pc.addTrack(e,n),t.set(n,r),this._senderMap.set(e,t),this._needsNegotiation();else if(r.removed)throw l(new Error("Track has been removed. You should enable/disable tracks that you want to re-add."),"ERR_SENDER_REMOVED");else throw l(new Error("Track has already been added to that stream."),"ERR_SENDER_ALREADY_ADDED")}replaceTrack(e,n,t){if(this.destroying)return;if(this.destroyed)throw l(new Error("cannot replaceTrack after peer is destroyed"),"ERR_DESTROYED");this._debug("replaceTrack()");const r=this._senderMap.get(e),o=r?r.get(t):null;if(!o)throw l(new Error("Cannot replace track that was never added."),"ERR_TRACK_NOT_ADDED");n&&this._senderMap.set(n,r),null==o.replaceTrack?this.destroy(l(new Error("replaceTrack is not supported in this browser"),"ERR_UNSUPPORTED_REPLACETRACK")):o.replaceTrack(n)}removeTrack(e,n){if(this.destroying)return;if(this.destroyed)throw l(new Error("cannot removeTrack after peer is destroyed"),"ERR_DESTROYED");this._debug("removeSender()");const t=this._senderMap.get(e),r=t?t.get(n):null;if(!r)throw l(new Error("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(l(e,"ERR_REMOVE_TRACK"))}this._needsNegotiation()}removeStream(e){if(!this.destroying){if(this.destroyed)throw l(new Error("cannot removeStream after peer is destroyed"),"ERR_DESTROYED");this._debug("removeSenders()"),e.getTracks().forEach(n=>{this.removeTrack(n,e)})}}_needsNegotiation(){this._debug("_needsNegotiation"),this._batchedNegotiation||(this._batchedNegotiation=!0,d(()=>{this._batchedNegotiation=!1,this.initiator||!this._firstNegotiation?(this._debug("starting batched negotiation"),this.negotiate()):this._debug("non-initiator initial negotiation request discarded"),this._firstNegotiation=!1}))}negotiate(){if(!this.destroying){if(this.destroyed)throw l(new Error("cannot negotiate after peer is destroyed"),"ERR_DESTROYED");this.initiator?this._isNegotiating?(this._queuedNegotiation=!0,this._debug("already negotiating, queueing")):(this._debug("start negotiation"),setTimeout(()=>{this._createOffer()},0)):this._isNegotiating?(this._queuedNegotiation=!0,this._debug("already negotiating, queueing")):(this._debug("requesting negotiation from initiator"),this.emit("signal",{type:"renegotiate",renegotiate:!0})),this._isNegotiating=!0}}destroy(e){this._destroy(e,()=>{})}_destroy(e,n){this.destroyed||this.destroying||(this.destroying=!0,this._debug("destroying (error: %s)",e&&(e.message||e)),d(()=>{if(this.destroyed=!0,this.destroying=!1,this._debug("destroy (error: %s)",e&&(e.message||e)),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"),n()}))}_setupData(e){if(!e.channel)return this.destroy(l(new Error("Data channel event is missing `channel` property"),"ERR_DATA_CHANNEL"));this._channel=e.channel,this._channel.binaryType="arraybuffer","number"==typeof this._channel.bufferedAmountLowThreshold&&(this._channel.bufferedAmountLowThreshold=p),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=>{const n=e.error instanceof Error?e.error:new Error(`Datachannel error: ${e.message} ${e.filename}:${e.lineno}:${e.colno}`);this.destroy(l(n,"ERR_DATA_CHANNEL"))};let n=!1;this._closingInterval=setInterval(()=>{this._channel&&"closing"===this._channel.readyState?(n&&this._onChannelClose(),n=!0):n=!1},_)}_read(){}_write(e,n,t){if(this.destroyed)return t(l(new Error("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>p?(this._debug("start backpressure: bufferedAmount %d",this._channel.bufferedAmount),this._cb=t):t(null)}else this._debug("write before connect"),this._chunk=e,this._cb=t}_onFinish(){if(!this.destroyed){const e=()=>{setTimeout(()=>this.destroy(),1e3)};this._connected?e():this.once("connect",e)}}_startIceCompleteTimeout(){this.destroyed||this._iceCompleteTimer||(this._debug("started iceComplete timeout"),this._iceCompleteTimer=setTimeout(()=>{this._iceComplete||(this._iceComplete=!0,this._debug("iceComplete timeout completed"),this.emit("iceTimeout"),this.emit("_iceComplete"))},this.iceCompleteTimeout))}_createOffer(){this.destroyed||this._pc.createOffer(this.offerOptions).then(e=>{if(this.destroyed)return;this.trickle||this.allowHalfTrickle||(e.sdp=r(e.sdp)),e.sdp=this.sdpTransform(e.sdp);const n=()=>{if(!this.destroyed){const n=this._pc.localDescription||e;this._debug("signal"),this.emit("signal",{type:n.type,sdp:n.sdp})}},t=()=>{this._debug("createOffer success"),this.destroyed||(this.trickle||this._iceComplete?n():this.once("_iceComplete",n))},o=e=>{this.destroy(l(e,"ERR_SET_LOCAL_DESCRIPTION"))};this._pc.setLocalDescription(e).then(t).catch(o)}).catch(e=>{this.destroy(l(e,"ERR_CREATE_OFFER"))})}_requestMissingTransceivers(){this._pc.getTransceivers&&this._pc.getTransceivers().forEach(e=>{e.mid||!e.sender.track||e.requested||(e.requested=!0,this.addTransceiver(e.sender.track.kind))})}_createAnswer(){this.destroyed||this._pc.createAnswer(this.answerOptions).then(e=>{if(this.destroyed)return;this.trickle||this.allowHalfTrickle||(e.sdp=r(e.sdp)),e.sdp=this.sdpTransform(e.sdp);const n=()=>{if(!this.destroyed){const n=this._pc.localDescription||e;this._debug("signal"),this.emit("signal",{type:n.type,sdp:n.sdp}),this.initiator||this._requestMissingTransceivers()}},t=()=>{this.destroyed||(this.trickle||this._iceComplete?n():this.once("_iceComplete",n))},o=e=>{this.destroy(l(e,"ERR_SET_LOCAL_DESCRIPTION"))};this._pc.setLocalDescription(e).then(t).catch(o)}).catch(e=>{this.destroy(l(e,"ERR_CREATE_ANSWER"))})}_onConnectionStateChange(){this.destroyed||"failed"===this._pc.connectionState&&this.destroy(l(new Error("Connection failed."),"ERR_CONNECTION_FAILURE"))}_onIceStateChange(){if(this.destroyed)return;const e=this._pc.iceConnectionState,n=this._pc.iceGatheringState;this._debug("iceStateChange (connection: %s) (gathering: %s)",e,n),this.emit("iceStateChange",e,n),("connected"===e||"completed"===e)&&(this._pcReady=!0,this._maybeReady()),"failed"===e&&this.destroy(l(new Error("Ice connection failed."),"ERR_ICE_CONNECTION_FAILURE")),"closed"===e&&this.destroy(l(new Error("Ice connection closed."),"ERR_ICE_CONNECTION_CLOSED"))}getStats(e){const n=e=>("[object Array]"===Object.prototype.toString.call(e.values)&&e.values.forEach(n=>{Object.assign(e,n)}),e);0===this._pc.getStats.length||this._isReactNativeWebrtc?this._pc.getStats().then(t=>{const r=[];t.forEach(e=>{r.push(n(e))}),e(null,r)},n=>e(n)):0<this._pc.getStats.length?this._pc.getStats(t=>{if(this.destroyed)return;const r=[];t.result().forEach(e=>{const t={};e.names().forEach(n=>{t[n]=e.stat(n)}),t.id=e.id,t.type=e.type,t.timestamp=e.timestamp,r.push(n(t))}),e(null,r)},n=>e(n)):e(null,[])}_maybeReady(){if(this._debug("maybeReady pc %s channel %s",this._pcReady,this._channelReady),this._connected||this._connecting||!this._pcReady||!this._channelReady)return;this._connecting=!0;const e=()=>{this.destroyed||this.getStats((n,t)=>{if(this.destroyed)return;n&&(t=[]);const r={},o={},i={};let s=!1;t.forEach(e=>{("remotecandidate"===e.type||"remote-candidate"===e.type)&&(r[e.id]=e),("localcandidate"===e.type||"local-candidate"===e.type)&&(o[e.id]=e),("candidatepair"===e.type||"candidate-pair"===e.type)&&(i[e.id]=e)});const a=e=>{s=!0;let n=o[e.localCandidateId];n&&(n.ip||n.address)?(this.localAddress=n.ip||n.address,this.localPort=+n.port):n&&n.ipAddress?(this.localAddress=n.ipAddress,this.localPort=+n.portNumber):"string"==typeof e.googLocalAddress&&(n=e.googLocalAddress.split(":"),this.localAddress=n[0],this.localPort=+n[1]),this.localAddress&&(this.localFamily=this.localAddress.includes(":")?"IPv6":"IPv4");let t=r[e.remoteCandidateId];t&&(t.ip||t.address)?(this.remoteAddress=t.ip||t.address,this.remotePort=+t.port):t&&t.ipAddress?(this.remoteAddress=t.ipAddress,this.remotePort=+t.portNumber):"string"==typeof e.googRemoteAddress&&(t=e.googRemoteAddress.split(":"),this.remoteAddress=t[0],this.remotePort=+t[1]),this.remoteAddress&&(this.remoteFamily=this.remoteAddress.includes(":")?"IPv6":"IPv4"),this._debug("connect local: %s:%s remote: %s:%s",this.localAddress,this.localPort,this.remoteAddress,this.remotePort)};if(t.forEach(e=>{"transport"===e.type&&e.selectedCandidatePairId&&a(i[e.selectedCandidatePairId]),("googCandidatePair"===e.type&&"true"===e.googActiveConnection||("candidatepair"===e.type||"candidate-pair"===e.type)&&e.selected)&&a(e)}),!s&&(!Object.keys(i).length||Object.keys(o).length))return void setTimeout(e,100);if(this._connecting=!1,this._connected=!0,this._chunk){try{this.send(this._chunk)}catch(e){return this.destroy(l(e,"ERR_DATA_CHANNEL"))}this._chunk=null,this._debug("sent chunk from \"write before connect\"");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._debug("connect"),this.emit("connect")})};e()}_onInterval(){this._cb&&this._channel&&!(this._channel.bufferedAmount>p)&&this._onChannelBufferedAmountLow()}_onSignalingStateChange(){this.destroyed||("stable"===this._pc.signalingState&&(this._isNegotiating=!1,this._debug("flushing sender queue",this._sendersAwaitingStable),this._sendersAwaitingStable.forEach(e=>{this._pc.removeTrack(e),this._queuedNegotiation=!0}),this._sendersAwaitingStable=[],this._queuedNegotiation?(this._debug("flushing negotiation queue"),this._queuedNegotiation=!1,this._needsNegotiation()):(this._debug("negotiated"),this.emit("negotiated"))),this._debug("signalingStateChange %s",this._pc.signalingState),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){this.destroyed||this.emit("data",e.data)}_onChannelBufferedAmountLow(){if(!this.destroyed&&this._cb){this._debug("ending backpressure: bufferedAmount %d",this._channel.bufferedAmount);const e=this._cb;this._cb=null,e(null)}}_onChannelOpen(){this._connected||this.destroyed||(this._debug("on channel open"),this._channelReady=!0,this._maybeReady())}_onChannelClose(){this.destroyed||(this._debug("on channel close"),this.destroy())}_onTrack(e){if(this.destroyed)return;const{track:n,receiver:t,streams:r}=e;r.forEach(e=>{this._debug("on track"),this.emit("track",n,e,t),this._remoteTracks.push({track:n,stream:e}),this._remoteStreams.some(n=>n.id===e.id)||(this._remoteStreams.push(e),d(()=>{this._debug("on stream"),this.emit("stream",e,t)}))})}_debug(){const e=[].slice.call(arguments);e[0]="["+this.id+"] "+e[0],i.apply(null,e)}}g.WEBRTC_SUPPORT=!!s(),g.config={iceServers:[{urls:["stun:stun.l.google.com:19302","stun:global.stun.twilio.com:3478"]}],sdpSemantics:"unified-plan"},g.channelConfig={},g.proprietaryConstraints={},n.exports=g},{debug:1,"err-code":3,events:4,"get-browser-rtc":5,"queue-microtask":8,"random-string":9}]},{},[])("/")});