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t._pc){if(t.stream){t.stream.getTracks().forEach(function(e){t._pc.addTrack(e,t.stream)})}t._pc.ontrack=function(e){t._onTrack(e)}}else{if(t.stream)t._pc.addStream(t.stream);t._pc.onaddstream=function(e){t._onAddStream(e)}}if(t.initiator&&t._isWrtc){t._pc.onnegotiationneeded()}t._onFinishBound=function(){t._onFinish()};t.once("finish",t._onFinishBound)}u.WEBRTC_SUPPORT=!!i();u.config={iceServers:[{urls:"stun:stun.l.google.com:19302"},{urls:"stun:global.stun.twilio.com:3478?transport=udp"}]};u.constraints={};u.channelConfig={};Object.defineProperty(u.prototype,"bufferSize",{get:function(){var e=this;return e._channel&&e._channel.bufferedAmount||0}});u.prototype.address=function(){var e=this;return{port:e.localPort,family:"IPv4",address:e.localAddress}};u.prototype.signal=function(e){var t=this;if(t.destroyed)throw new Error("cannot signal after peer is destroyed");if(typeof e==="string"){try{e=JSON.parse(e)}catch(t){e={}}}t._debug("signal()");if(e.candidate){if(t._pc.remoteDescription)t._addIceCandidate(e.candidate);else t._pendingCandidates.push(e.candidate)}if(e.sdp){t._pc.setRemoteDescription(new t._wrtc.RTCSessionDescription(e),function(){if(t.destroyed)return;t._pendingCandidates.forEach(function(e){t._addIceCandidate(e)});t._pendingCandidates=[];if(t._pc.remoteDescription.type==="offer")t._createAnswer()},function(e){t._onError(e)})}if(!e.sdp&&!e.candidate){t._destroy(new Error("signal() called with invalid signal data"))}};u.prototype._addIceCandidate=function(e){var t=this;try{t._pc.addIceCandidate(new t._wrtc.RTCIceCandidate(e),c,function(e){t._onError(e)})}catch(e){t._destroy(new Error("error adding candidate: "+e.message))}};u.prototype.send=function(e){var t=this;if(t._isWrtc&&r.isBuffer(e)){e=new Uint8Array(e)}t._channel.send(e)};u.prototype.destroy=function(e){var t=this;t._destroy(null,e)};u.prototype._destroy=function(e,t){var r=this;if(r.destroyed)return;if(t)r.once("close",t);r._debug("destroy (error: %s)",e&&e.message);r.readable=r.writable=false;if(!r._readableState.ended)r.push(null);if(!r._writableState.finished)r.end();r.destroyed=true;r.connected=false;r._pcReady=false;r._channelReady=false;r._previousStreams=null;clearInterval(r._interval);clearTimeout(r._reconnectTimeout);r._interval=null;r._reconnectTimeout=null;r._chunk=null;r._cb=null;if(r._onFinishBound)r.removeListener("finish",r._onFinishBound);r._onFinishBound=null;if(r._pc){try{r._pc.close()}catch(e){}r._pc.oniceconnectionstatechange=null;r._pc.onsignalingstatechange=null;r._pc.onicecandidate=null;if("addTrack"in r._pc){r._pc.ontrack=null}else{r._pc.onaddstream=null}r._pc.onnegotiationneeded=null;r._pc.ondatachannel=null}if(r._channel){try{r._channel.close()}catch(e){}r._channel.onmessage=null;r._channel.onopen=null;r._channel.onclose=null}r._pc=null;r._channel=null;if(e)r.emit("error",e);r.emit("close")};u.prototype._setupData=function(e){var t=this;t._channel=e.channel;t._channel.binaryType="arraybuffer";if(typeof t._channel.bufferedAmountLowThreshold==="number"){t._channel.bufferedAmountLowThreshold=f}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()}};u.prototype._read=function(){};u.prototype._write=function(e,t,r){var n=this;if(n.destroyed)return r(new Error("cannot write after peer is destroyed"));if(n.connected){try{n.send(e)}catch(e){return n._onError(e)}if(n._channel.bufferedAmount>f){n._debug("start backpressure: bufferedAmount %d",n._channel.bufferedAmount);n._cb=r}else{r(null)}}else{n._debug("write before connect");n._chunk=e;n._cb=r}};u.prototype._onFinish=function(){var e=this;if(e.destroyed)return;if(e.connected){t()}else{e.once("connect",t)}function t(){setTimeout(function(){e._destroy()},100)}};u.prototype._createOffer=function(){var e=this;if(e.destroyed)return;e._pc.createOffer(function(t){if(e.destroyed)return;t.sdp=e.sdpTransform(t.sdp);e._pc.setLocalDescription(t,c,function(t){e._onError(t)});var r=function(){var r=e._pc.localDescription||t;e._debug("signal");e.emit("signal",{type:r.type,sdp:r.sdp})};if(e.trickle||e._iceComplete)r();else e.once("_iceComplete",r)},function(t){e._onError(t)},e.offerConstraints)};u.prototype._createAnswer=function(){var e=this;if(e.destroyed)return;e._pc.createAnswer(function(t){if(e.destroyed)return;t.sdp=e.sdpTransform(t.sdp);e._pc.setLocalDescription(t,c,function(t){e._onError(t)});if(e.trickle||e._iceComplete)r();else e.once("_iceComplete",r);function r(){var r=e._pc.localDescription||t;e._debug("signal");e.emit("signal",{type:r.type,sdp:r.sdp})}},function(t){e._onError(t)},e.answerConstraints)};u.prototype._onIceConnectionStateChange=function(){var e=this;if(e.destroyed)return;var t=e._pc.iceGatheringState;var r=e._pc.iceConnectionState;e._debug("iceConnectionStateChange %s %s",t,r);e.emit("iceConnectionStateChange",t,r);if(r==="connected"||r==="completed"){clearTimeout(e._reconnectTimeout);e._pcReady=true;e._maybeReady()}if(r==="disconnected"){if(e.reconnectTimer){clearTimeout(e._reconnectTimeout);e._reconnectTimeout=setTimeout(function(){e._destroy()},e.reconnectTimer)}else{e._destroy()}}if(r==="failed"){e._destroy(new Error("Ice connection failed."))}if(r==="closed"){e._destroy()}};u.prototype.getStats=function(e){var t=this;if(t._pc.getStats.length===0){t._pc.getStats().then(function(t){var r=[];t.forEach(function(e){r.push(e)});e(r)},function(e){t._onError(e)})}else if(t._isReactNativeWebrtc){t._pc.getStats(null,function(t){var r=[];t.forEach(function(e){r.push(e)});e(r)},function(e){t._onError(e)})}else if(t._pc.getStats.length>0){t._pc.getStats(function(t){var r=[];t.result().forEach(function(e){var t={};e.names().forEach(function(r){t[r]=e.stat(r)});t.id=e.id;t.type=e.type;t.timestamp=e.timestamp;r.push(t)});e(r)},function(e){t._onError(e)})}else{e([])}};u.prototype._maybeReady=function(){var e=this;e._debug("maybeReady pc %s channel %s",e._pcReady,e._channelReady);if(e.connected||e._connecting||!e._pcReady||!e._channelReady)return;e._connecting=true;e.getStats(function(t){e._connecting=false;e.connected=true;var r={};var n={};var i={};t.forEach(function(e){if(e.type==="remotecandidate"||e.type==="remote-candidate"){r[e.id]=e}if(e.type==="localcandidate"||e.type==="local-candidate"){n[e.id]=e}if(e.type==="candidatepair"||e.type==="candidate-pair"){i[e.id]=e}});t.forEach(function(e){if(e.type==="transport"){o(i[e.selectedCandidatePairId])}if(e.type==="googCandidatePair"&&e.googActiveConnection==="true"||(e.type==="candidatepair"||e.type==="candidate-pair")&&e.selected){o(e)}});function o(t){var i=n[t.localCandidateId];if(i&&i.ip){e.localAddress=i.ip;e.localPort=Number(i.port)}else if(i&&i.ipAddress){e.localAddress=i.ipAddress;e.localPort=Number(i.portNumber)}else if(typeof t.googLocalAddress==="string"){i=t.googLocalAddress.split(":");e.localAddress=i[0];e.localPort=Number(i[1])}var o=r[t.remoteCandidateId];if(o&&o.ip){e.remoteAddress=o.ip;e.remotePort=Number(o.port)}else if(o&&o.ipAddress){e.remoteAddress=o.ipAddress;e.remotePort=Number(o.portNumber)}else if(typeof t.googRemoteAddress==="string"){o=t.googRemoteAddress.split(":");e.remoteAddress=o[0];e.remotePort=Number(o[1])}e.remoteFamily="IPv4";e._debug("connect local: %s:%s remote: %s:%s",e.localAddress,e.localPort,e.remoteAddress,e.remotePort)}if(e._chunk){try{e.send(e._chunk)}catch(t){return e._onError(t)}e._chunk=null;e._debug('sent chunk from "write before connect"');var a=e._cb;e._cb=null;a(null)}if(typeof e._channel.bufferedAmountLowThreshold!=="number"){e._interval=setInterval(function(){e._onInterval()},150);if(e._interval.unref)e._interval.unref()}e._debug("connect");e.emit("connect")})};u.prototype._onInterval=function(){if(!this._cb||!this._channel||this._channel.bufferedAmount>f){return}this._onChannelBufferedAmountLow()};u.prototype._onSignalingStateChange=function(){var e=this;if(e.destroyed)return;e._debug("signalingStateChange %s",e._pc.signalingState);e.emit("signalingStateChange",e._pc.signalingState)};u.prototype._onIceCandidate=function(e){var t=this;if(t.destroyed)return;if(e.candidate&&t.trickle){t.emit("signal",{candidate:{candidate:e.candidate.candidate,sdpMLineIndex:e.candidate.sdpMLineIndex,sdpMid:e.candidate.sdpMid}})}else if(!e.candidate){t._iceComplete=true;t.emit("_iceComplete")}};u.prototype._onChannelMessage=function(e){var t=this;if(t.destroyed)return;var n=e.data;if(n instanceof ArrayBuffer)n=new r(n);t.push(n)};u.prototype._onChannelBufferedAmountLow=function(){var e=this;if(e.destroyed||!e._cb)return;e._debug("ending backpressure: bufferedAmount %d",e._channel.bufferedAmount);var t=e._cb;e._cb=null;t(null)};u.prototype._onChannelOpen=function(){var e=this;if(e.connected||e.destroyed)return;e._debug("on channel open");e._channelReady=true;e._maybeReady()};u.prototype._onChannelClose=function(){var e=this;if(e.destroyed)return;e._debug("on channel close");e._destroy()};u.prototype._onAddStream=function(e){var t=this;if(t.destroyed)return;t._debug("on add stream");t.emit("stream",e.stream)};u.prototype._onTrack=function(e){var t=this;if(t.destroyed)return;t._debug("on track");var r=e.streams[0].id;if(t._previousStreams.indexOf(r)!==-1)return;t._previousStreams.push(r);t.emit("stream",e.streams[0])};u.prototype._onError=function(e){var t=this;if(t.destroyed)return;t._debug("error %s",e.message||e);t._destroy(e)};u.prototype._debug=function(){var e=this;var t=[].slice.call(arguments);t[0]="["+e._id+"] "+t[0];n.apply(null,t)};u.prototype._transformConstraints=function(e){var t=this;if(Object.keys(e).length===0){return e}if((e.mandatory||e.optional)&&!t._isChromium){var r=Object.assign({},e.optional,e.mandatory);if(r.OfferToReceiveVideo!==undefined){r.offerToReceiveVideo=r.OfferToReceiveVideo;delete r["OfferToReceiveVideo"]}if(r.OfferToReceiveAudio!==undefined){r.offerToReceiveAudio=r.OfferToReceiveAudio;delete r["OfferToReceiveAudio"]}return r}else if(!e.mandatory&&!e.optional&&t._isChromium){if(e.offerToReceiveVideo!==undefined){e.OfferToReceiveVideo=e.offerToReceiveVideo;delete e["offerToReceiveVideo"]}if(e.offerToReceiveAudio!==undefined){e.OfferToReceiveAudio=e.offerToReceiveAudio;delete e["offerToReceiveAudio"]}return{mandatory:e}}return e};function c(){}}).call(this,e("buffer").Buffer)},{buffer:4,debug:6,"get-browser-rtc":9,inherits:11,randombytes:17,"readable-stream":24}]},{},[])("/")});