!function(e){"object"==typeof exports&&"undefined"!=typeof module?module.exports=e():"function"==typeof define&&define.amd?define([],e):("undefined"!=typeof window?window:"undefined"!=typeof global?global:"undefined"!=typeof self?self:this).adapter=e()}(function(){return function a(o,s,c){function d(t,e){if(!s[t]){if(!o[t]){var r="function"==typeof require&&require;if(!e&&r)return r(t,!0);if(p)return p(t,!0);var n=new Error("Cannot find module '"+t+"'");throw n.code="MODULE_NOT_FOUND",n}var i=s[t]={exports:{}};o[t][0].call(i.exports,function(e){return d(o[t][1][e]||e)},i,i.exports,a,o,s,c)}return s[t].exports}for(var p="function"==typeof require&&require,e=0;e<c.length;e++)d(c[e]);return d}({1:[function(e,t,r){"use strict";var n=(0,e("./adapter_factory.js").adapterFactory)({window:window});t.exports=n},{"./adapter_factory.js":2}],2:[function(e,t,r){"use strict";Object.defineProperty(r,"__esModule",{value:!0}),r.adapterFactory=function(){var e=(0<arguments.length&&void 0!==arguments[0]?arguments[0]:{}).window,t=1<arguments.length&&void 0!==arguments[1]?arguments[1]:{shimChrome:!0,shimFirefox:!0,shimEdge:!0,shimSafari:!0},r=a.log,n=a.detectBrowser(e),i={browserDetails:n,commonShim:p,extractVersion:a.extractVersion,disableLog:a.disableLog,disableWarnings:a.disableWarnings};switch(n.browser){case"chrome":if(!o||!o.shimPeerConnection||!t.shimChrome)return r("Chrome shim is not included in this adapter release."),i;r("adapter.js shimming chrome."),(i.browserShim=o).shimGetUserMedia(e),o.shimMediaStream(e),o.shimPeerConnection(e),o.shimOnTrack(e),o.shimAddTrackRemoveTrack(e),o.shimGetSendersWithDtmf(e),o.shimGetStats(e),o.shimSenderReceiverGetStats(e),o.fixNegotiationNeeded(e),p.shimRTCIceCandidate(e),p.shimConnectionState(e),p.shimMaxMessageSize(e),p.shimSendThrowTypeError(e),p.removeAllowExtmapMixed(e);break;case"firefox":if(!c||!c.shimPeerConnection||!t.shimFirefox)return r("Firefox shim is not included in this adapter release."),i;r("adapter.js shimming firefox."),(i.browserShim=c).shimGetUserMedia(e),c.shimPeerConnection(e),c.shimOnTrack(e),c.shimRemoveStream(e),c.shimSenderGetStats(e),c.shimReceiverGetStats(e),c.shimRTCDataChannel(e),c.shimAddTransceiver(e),c.shimCreateOffer(e),c.shimCreateAnswer(e),p.shimRTCIceCandidate(e),p.shimConnectionState(e),p.shimMaxMessageSize(e),p.shimSendThrowTypeError(e);break;case"edge":if(!s||!s.shimPeerConnection||!t.shimEdge)return r("MS edge shim is not included in this adapter release."),i;r("adapter.js shimming edge."),(i.browserShim=s).shimGetUserMedia(e),s.shimGetDisplayMedia(e),s.shimPeerConnection(e),s.shimReplaceTrack(e),p.shimMaxMessageSize(e),p.shimSendThrowTypeError(e);break;case"safari":if(!d||!t.shimSafari)return r("Safari shim is not included in this adapter release."),i;r("adapter.js shimming safari."),(i.browserShim=d).shimRTCIceServerUrls(e),d.shimCreateOfferLegacy(e),d.shimCallbacksAPI(e),d.shimLocalStreamsAPI(e),d.shimRemoteStreamsAPI(e),d.shimTrackEventTransceiver(e),d.shimGetUserMedia(e),p.shimRTCIceCandidate(e),p.shimMaxMessageSize(e),p.shimSendThrowTypeError(e),p.removeAllowExtmapMixed(e);break;default:r("Unsupported browser!")}return i};var a=n(e("./utils")),o=n(e("./chrome/chrome_shim")),s=n(e("./edge/edge_shim")),c=n(e("./firefox/firefox_shim")),d=n(e("./safari/safari_shim")),p=n(e("./common_shim"));function n(e){if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r]);return t.default=e,t}},{"./chrome/chrome_shim":3,"./common_shim":6,"./edge/edge_shim":7,"./firefox/firefox_shim":11,"./safari/safari_shim":14,"./utils":15}],3:[function(e,t,r){"use strict";Object.defineProperty(r,"__esModule",{value:!0}),r.shimGetDisplayMedia=r.shimGetUserMedia=void 0;var s="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e},n=e("./getusermedia");Object.defineProperty(r,"shimGetUserMedia",{enumerable:!0,get:function(){return n.shimGetUserMedia}});var i=e("./getdisplaymedia");Object.defineProperty(r,"shimGetDisplayMedia",{enumerable:!0,get:function(){return i.shimGetDisplayMedia}}),r.shimMediaStream=function(e){e.MediaStream=e.MediaStream||e.webkitMediaStream},r.shimOnTrack=function(a){{var e;"object"!==(void 0===a?"undefined":s(a))||!a.RTCPeerConnection||"ontrack"in a.RTCPeerConnection.prototype?c.wrapPeerConnectionEvent(a,"track",function(e){return e.transceiver||Object.defineProperty(e,"transceiver",{value:{receiver:e.receiver}}),e}):(Object.defineProperty(a.RTCPeerConnection.prototype,"ontrack",{get:function(){return this._ontrack},set:function(e){this._ontrack&&this.removeEventListener("track",this._ontrack),this.addEventListener("track",this._ontrack=e)},enumerable:!0,configurable:!0}),e=a.RTCPeerConnection.prototype.setRemoteDescription,a.RTCPeerConnection.prototype.setRemoteDescription=function(){var i=this;return this._ontrackpoly||(this._ontrackpoly=function(n){n.stream.addEventListener("addtrack",function(t){var e=void 0,e=a.RTCPeerConnection.prototype.getReceivers?i.getReceivers().find(function(e){return e.track&&e.track.id===t.track.id}):{track:t.track},r=new Event("track");r.track=t.track,r.receiver=e,r.transceiver={receiver:e},r.streams=[n.stream],i.dispatchEvent(r)}),n.stream.getTracks().forEach(function(t){var e=void 0,e=a.RTCPeerConnection.prototype.getReceivers?i.getReceivers().find(function(e){return e.track&&e.track.id===t.id}):{track:t},r=new Event("track");r.track=t,r.receiver=e,r.transceiver={receiver:e},r.streams=[n.stream],i.dispatchEvent(r)})},this.addEventListener("addstream",this._ontrackpoly)),e.apply(this,arguments)})}},r.shimGetSendersWithDtmf=function(e){{var n,i,r,a,t,o;"object"===(void 0===e?"undefined":s(e))&&e.RTCPeerConnection&&!("getSenders"in e.RTCPeerConnection.prototype)&&"createDTMFSender"in e.RTCPeerConnection.prototype?(n=function(e,t){return{track:t,get dtmf(){return void 0===this._dtmf&&("audio"===t.kind?this._dtmf=e.createDTMFSender(t):this._dtmf=null),this._dtmf},_pc:e}},e.RTCPeerConnection.prototype.getSenders||(e.RTCPeerConnection.prototype.getSenders=function(){return this._senders=this._senders||[],this._senders.slice()},i=e.RTCPeerConnection.prototype.addTrack,e.RTCPeerConnection.prototype.addTrack=function(e,t){var r=i.apply(this,arguments);return r||(r=n(this,e),this._senders.push(r)),r},r=e.RTCPeerConnection.prototype.removeTrack,e.RTCPeerConnection.prototype.removeTrack=function(e){r.apply(this,arguments);var t=this._senders.indexOf(e);-1!==t&&this._senders.splice(t,1)}),a=e.RTCPeerConnection.prototype.addStream,e.RTCPeerConnection.prototype.addStream=function(e){var t=this;this._senders=this._senders||[],a.apply(this,[e]),e.getTracks().forEach(function(e){t._senders.push(n(t,e))})},t=e.RTCPeerConnection.prototype.removeStream,e.RTCPeerConnection.prototype.removeStream=function(e){var r=this;this._senders=this._senders||[],t.apply(this,[e]),e.getTracks().forEach(function(t){var e=r._senders.find(function(e){return e.track===t});e&&r._senders.splice(r._senders.indexOf(e),1)})}):"object"===(void 0===e?"undefined":s(e))&&e.RTCPeerConnection&&"getSenders"in e.RTCPeerConnection.prototype&&"createDTMFSender"in e.RTCPeerConnection.prototype&&e.RTCRtpSender&&!("dtmf"in e.RTCRtpSender.prototype)&&(o=e.RTCPeerConnection.prototype.getSenders,e.RTCPeerConnection.prototype.getSenders=function(){var t=this,e=o.apply(this,[]);return e.forEach(function(e){return e._pc=t}),e},Object.defineProperty(e.RTCRtpSender.prototype,"dtmf",{get:function(){return void 0===this._dtmf&&("audio"===this.track.kind?this._dtmf=this._pc.createDTMFSender(this.track):this._dtmf=null),this._dtmf}}))}},r.shimGetStats=function(e){if(!e.RTCPeerConnection)return;var s=e.RTCPeerConnection.prototype.getStats;e.RTCPeerConnection.prototype.getStats=function(){var r=this,e=Array.prototype.slice.call(arguments),t=e[0],n=e[1],i=e[2];if(0<arguments.length&&"function"==typeof t)return s.apply(this,arguments);if(0===s.length&&(0===arguments.length||"function"!=typeof t))return s.apply(this,[]);function a(e){var n={};return e.result().forEach(function(t){var r={id:t.id,timestamp:t.timestamp,type:{localcandidate:"local-candidate",remotecandidate:"remote-candidate"}[t.type]||t.type};t.names().forEach(function(e){r[e]=t.stat(e)}),n[r.id]=r}),n}function o(t){return new Map(Object.keys(t).map(function(e){return[e,t[e]]}))}if(2<=arguments.length){return s.apply(this,[function(e){n(o(a(e)))},t])}return new Promise(function(t,e){s.apply(r,[function(e){t(o(a(e)))},e])}).then(n,i)}},r.shimSenderReceiverGetStats=function(a){if(!("object"===(void 0===a?"undefined":s(a))&&a.RTCPeerConnection&&a.RTCRtpSender&&a.RTCRtpReceiver))return;{var r,t;"getStats"in a.RTCRtpSender.prototype||((r=a.RTCPeerConnection.prototype.getSenders)&&(a.RTCPeerConnection.prototype.getSenders=function(){var t=this,e=r.apply(this,[]);return e.forEach(function(e){return e._pc=t}),e}),(t=a.RTCPeerConnection.prototype.addTrack)&&(a.RTCPeerConnection.prototype.addTrack=function(){var e=t.apply(this,arguments);return e._pc=this,e}),a.RTCRtpSender.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(e){return c.filterStats(e,t.track,!0)})})}{var n;"getStats"in a.RTCRtpReceiver.prototype||((n=a.RTCPeerConnection.prototype.getReceivers)&&(a.RTCPeerConnection.prototype.getReceivers=function(){var t=this,e=n.apply(this,[]);return e.forEach(function(e){return e._pc=t}),e}),c.wrapPeerConnectionEvent(a,"track",function(e){return e.receiver._pc=e.srcElement,e}),a.RTCRtpReceiver.prototype.getStats=function(){var t=this;return this._pc.getStats().then(function(e){return c.filterStats(e,t.track,!1)})})}if(!("getStats"in a.RTCRtpSender.prototype&&"getStats"in a.RTCRtpReceiver.prototype))return;var o=a.RTCPeerConnection.prototype.getStats;a.RTCPeerConnection.prototype.getStats=function(e){if(0<arguments.length&&e instanceof a.MediaStreamTrack){var t=e,r=void 0,n=void 0,i=void 0;return this.getSenders().forEach(function(e){e.track===t&&(r?i=!0:r=e)}),this.getReceivers().forEach(function(e){return e.track===t&&(n?i=!0:n=e),e.track===t}),i||r&&n?Promise.reject(new DOMException("There are more than one sender or receiver for the track.","InvalidAccessError")):r?r.getStats():n?n.getStats():Promise.reject(new DOMException("There is no sender or receiver for the track.","InvalidAccessError"))}return o.apply(this,arguments)}},r.shimAddTrackRemoveTrackWithNative=p,r.shimAddTrackRemoveTrack=function(o){if(!o.RTCPeerConnection)return;var e=c.detectBrowser(o);if(o.RTCPeerConnection.prototype.addTrack&&65<=e.version)return p(o);var r=o.RTCPeerConnection.prototype.getLocalStreams;o.RTCPeerConnection.prototype.getLocalStreams=function(){var t=this,e=r.apply(this);return this._reverseStreams=this._reverseStreams||{},e.map(function(e){return t._reverseStreams[e.id]})};var n=o.RTCPeerConnection.prototype.addStream;o.RTCPeerConnection.prototype.addStream=function(e){var t,r=this;this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},e.getTracks().forEach(function(t){if(r.getSenders().find(function(e){return e.track===t}))throw new DOMException("Track already exists.","InvalidAccessError")}),this._reverseStreams[e.id]||(t=new o.MediaStream(e.getTracks()),this._streams[e.id]=t,this._reverseStreams[t.id]=e,e=t),n.apply(this,[e])};var t=o.RTCPeerConnection.prototype.removeStream;function i(n,e){var i=e.sdp;return Object.keys(n._reverseStreams||[]).forEach(function(e){var t=n._reverseStreams[e],r=n._streams[t.id];i=i.replace(new RegExp(r.id,"g"),t.id)}),new RTCSessionDescription({type:e.type,sdp:i})}o.RTCPeerConnection.prototype.removeStream=function(e){this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{},t.apply(this,[this._streams[e.id]||e]),delete this._reverseStreams[this._streams[e.id]?this._streams[e.id].id:e.id],delete this._streams[e.id]},o.RTCPeerConnection.prototype.addTrack=function(t,e){var r=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");var n=[].slice.call(arguments,1);if(1!==n.length||!n[0].getTracks().find(function(e){return e===t}))throw new DOMException("The adapter.js addTrack polyfill only supports a single  stream which is associated with the specified track.","NotSupportedError");if(this.getSenders().find(function(e){return e.track===t}))throw new DOMException("Track already exists.","InvalidAccessError");this._streams=this._streams||{},this._reverseStreams=this._reverseStreams||{};var i,a=this._streams[e.id];return a?(a.addTrack(t),Promise.resolve().then(function(){r.dispatchEvent(new Event("negotiationneeded"))})):(i=new o.MediaStream([t]),this._streams[e.id]=i,this._reverseStreams[i.id]=e,this.addStream(i)),this.getSenders().find(function(e){return e.track===t})},["createOffer","createAnswer"].forEach(function(e){var t=o.RTCPeerConnection.prototype[e],r=d({},e,function(){var r=this,n=arguments;return arguments.length&&"function"==typeof arguments[0]?t.apply(this,[function(e){var t=i(r,e);n[0].apply(null,[t])},function(e){n[1]&&n[1].apply(null,e)},arguments[2]]):t.apply(this,arguments).then(function(e){return i(r,e)})});o.RTCPeerConnection.prototype[e]=r[e]});var a=o.RTCPeerConnection.prototype.setLocalDescription;o.RTCPeerConnection.prototype.setLocalDescription=function(e){return arguments.length&&e.type&&(n=this,i=(t=e).sdp,Object.keys(n._reverseStreams||[]).forEach(function(e){var t=n._reverseStreams[e],r=n._streams[t.id];i=i.replace(new RegExp(t.id,"g"),r.id)}),e=new RTCSessionDescription({type:t.type,sdp:i})),a.apply(this,arguments);var n,t,i};var s=Object.getOwnPropertyDescriptor(o.RTCPeerConnection.prototype,"localDescription");Object.defineProperty(o.RTCPeerConnection.prototype,"localDescription",{get:function(){var e=s.get.apply(this);return""===e.type?e:i(this,e)}}),o.RTCPeerConnection.prototype.removeTrack=function(t){var r=this;if("closed"===this.signalingState)throw new DOMException("The RTCPeerConnection's signalingState is 'closed'.","InvalidStateError");if(!t._pc)throw new DOMException("Argument 1 of RTCPeerConnection.removeTrack does not implement interface RTCRtpSender.","TypeError");if(!(t._pc===this))throw new DOMException("Sender was not created by this connection.","InvalidAccessError");this._streams=this._streams||{};var n=void 0;Object.keys(this._streams).forEach(function(e){r._streams[e].getTracks().find(function(e){return t.track===e})&&(n=r._streams[e])}),n&&(1===n.getTracks().length?this.removeStream(this._reverseStreams[n.id]):n.removeTrack(t.track),this.dispatchEvent(new Event("negotiationneeded")))}},r.shimPeerConnection=function(n){var r=c.detectBrowser(n);!n.RTCPeerConnection&&n.webkitRTCPeerConnection&&(n.RTCPeerConnection=n.webkitRTCPeerConnection);if(!n.RTCPeerConnection)return;r.version<53&&["setLocalDescription","setRemoteDescription","addIceCandidate"].forEach(function(e){var t=n.RTCPeerConnection.prototype[e],r=d({},e,function(){return arguments[0]=new("addIceCandidate"===e?n.RTCIceCandidate:n.RTCSessionDescription)(arguments[0]),t.apply(this,arguments)});n.RTCPeerConnection.prototype[e]=r[e]});var i=n.RTCPeerConnection.prototype.addIceCandidate;n.RTCPeerConnection.prototype.addIceCandidate=function(e,t){return e?r.version<78&&e&&""===e.candidate?Promise.resolve():i.apply(this,arguments):(t&&t.apply(null),Promise.resolve())}},r.fixNegotiationNeeded=function(e){c.wrapPeerConnectionEvent(e,"negotiationneeded",function(e){if("stable"===e.target.signalingState)return e})};var c=function(e){{if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r]);return t.default=e,t}}(e("../utils.js"));function d(e,t,r){return t in e?Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0}):e[t]=r,e}function p(e){e.RTCPeerConnection.prototype.getLocalStreams=function(){var t=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},Object.keys(this._shimmedLocalStreams).map(function(e){return t._shimmedLocalStreams[e][0]})};var n=e.RTCPeerConnection.prototype.addTrack;e.RTCPeerConnection.prototype.addTrack=function(e,t){if(!t)return n.apply(this,arguments);this._shimmedLocalStreams=this._shimmedLocalStreams||{};var r=n.apply(this,arguments);return this._shimmedLocalStreams[t.id]?-1===this._shimmedLocalStreams[t.id].indexOf(r)&&this._shimmedLocalStreams[t.id].push(r):this._shimmedLocalStreams[t.id]=[t,r],r};var i=e.RTCPeerConnection.prototype.addStream;e.RTCPeerConnection.prototype.addStream=function(e){var r=this;this._shimmedLocalStreams=this._shimmedLocalStreams||{},e.getTracks().forEach(function(t){if(r.getSenders().find(function(e){return e.track===t}))throw new DOMException("Track already exists.","InvalidAccessError")});var t=this.getSenders();i.apply(this,arguments);var n=this.getSenders().filter(function(e){return-1===t.indexOf(e)});this._shimmedLocalStreams[e.id]=[e].concat(n)};var t=e.RTCPeerConnection.prototype.removeStream;e.RTCPeerConnection.prototype.removeStream=function(e){return this._shimmedLocalStreams=this._shimmedLocalStreams||{},delete this._shimmedLocalStreams[e.id],t.apply(this,arguments)};var a=e.RTCPeerConnection.prototype.removeTrack;e.RTCPeerConnection.prototype.removeTrack=function(r){var n=this;return this._shimmedLocalStreams=this._shimmedLocalStreams||{},r&&Object.keys(this._shimmedLocalStreams).forEach(function(e){var t=n._shimmedLocalStreams[e].indexOf(r);-1!==t&&n._shimmedLocalStreams[e].splice(t,1),1===n._shimmedLocalStreams[e].length&&delete n._shimmedLocalStreams[e]}),a.apply(this,arguments)}}},{"../utils.js":15,"./getdisplaymedia":4,"./getusermedia":5}],4:[function(e,t,r){"use strict";Object.defineProperty(r,"__esModule",{value:!0}),r.shimGetDisplayMedia=function(a,e){if(a.navigator.mediaDevices&&"getDisplayMedia"in a.navigator.mediaDevices)return;if(!a.navigator.mediaDevices)return;if("function"!=typeof e)return void console.error("shimGetDisplayMedia: getSourceId argument is not a function");a.navigator.mediaDevices.getDisplayMedia=function(i){return e(i).then(function(e){var t=i.video&&i.video.width,r=i.video&&i.video.height,n=i.video&&i.video.frameRate;return i.video={mandatory:{chromeMediaSource:"desktop",chromeMediaSourceId:e,maxFrameRate:n||3}},t&&(i.video.mandatory.maxWidth=t),r&&(i.video.mandatory.maxHeight=r),a.navigator.mediaDevices.getUserMedia(i)})}}},{}],5:[function(e,t,r){"use strict";Object.defineProperty(r,"__esModule",{value:!0});var d="function"==typeof Symbol&&"symbol"==typeof 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0!==r[e]&&(a.mandatory=a.mandatory||{},a.mandatory[n(e,t)]=r[e])}))}),i.advanced&&(a.optional=(a.optional||[]).concat(i.advanced)),a}function n(r,n){if(61<=c.version)return n(r);var e;if((r=JSON.parse(JSON.stringify(r)))&&"object"===d(r.audio)&&((e=function(e,t,r){t in e&&!(r in e)&&(e[r]=e[t],delete e[t])})((r=JSON.parse(JSON.stringify(r))).audio,"autoGainControl","googAutoGainControl"),e(r.audio,"noiseSuppression","googNoiseSuppression"),r.audio=s(r.audio)),r&&"object"===d(r.video)){var i=(i=r.video.facingMode)&&("object"===(void 0===i?"undefined":d(i))?i:{ideal:i}),t=c.version<66;if(i&&("user"===i.exact||"environment"===i.exact||"user"===i.ideal||"environment"===i.ideal)&&(!o.mediaDevices.getSupportedConstraints||!o.mediaDevices.getSupportedConstraints().facingMode||t)){delete r.video.facingMode;var a=void 0;if("environment"===i.exact||"environment"===i.ideal?a=["back","rear"]:"user"!==i.exact&&"user"!==i.ideal||(a=["front"]),a)return o.mediaDevices.enumerateDevices().then(function(e){var t=(e=e.filter(function(e){return"videoinput"===e.kind})).find(function(t){return a.some(function(e){return t.label.toLowerCase().includes(e)})});return!t&&e.length&&a.includes("back")&&(t=e[e.length-1]),t&&(r.video.deviceId=i.exact?{exact:t.deviceId}:{ideal:t.deviceId}),r.video=s(r.video),p("chrome: "+JSON.stringify(r)),n(r)})}r.video=s(r.video)}return p("chrome: "+JSON.stringify(r)),n(r)}function i(e){return 64<=c.version?e:{name:{PermissionDeniedError:"NotAllowedError",PermissionDismissedError:"NotAllowedError",InvalidStateError:"NotAllowedError",DevicesNotFoundError:"NotFoundError",ConstraintNotSatisfiedError:"OverconstrainedError",TrackStartError:"NotReadableError",MediaDeviceFailedDueToShutdown:"NotAllowedError",MediaDeviceKillSwitchOn:"NotAllowedError",TabCaptureError:"AbortError",ScreenCaptureError:"AbortError",DeviceCaptureError:"AbortError"}[e.name]||e.name,message:e.message,constraint:e.constraint||e.constraintName,toString:function(){return this.name+(this.message&&": ")+this.message}}}var c=a.detectBrowser(e);{var r;o.getUserMedia=function(e,t,r){n(e,function(e){o.webkitGetUserMedia(e,t,function(e){r&&r(i(e))})})}.bind(o),o.mediaDevices.getUserMedia&&(r=o.mediaDevices.getUserMedia.bind(o.mediaDevices),o.mediaDevices.getUserMedia=function(e){return n(e,function(t){return r(t).then(function(e){if(t.audio&&!e.getAudioTracks().length||t.video&&!e.getVideoTracks().length)throw e.getTracks().forEach(function(e){e.stop()}),new DOMException("","NotFoundError");return e},function(e){return Promise.reject(i(e))})})})}};var a=function(e){{if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r]);return t.default=e,t}}(e("../utils.js"));var p=a.log},{"../utils.js":15}],6:[function(e,t,r){"use strict";Object.defineProperty(r,"__esModule",{value:!0});var a="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e};r.shimRTCIceCandidate=function(t){if(!t.RTCIceCandidate||t.RTCIceCandidate&&"foundation"in t.RTCIceCandidate.prototype)return;var i=t.RTCIceCandidate;t.RTCIceCandidate=function(e){if("object"===(void 0===e?"undefined":a(e))&&e.candidate&&0===e.candidate.indexOf("a=")&&((e=JSON.parse(JSON.stringify(e))).candidate=e.candidate.substr(2)),e.candidate&&e.candidate.length){var t=new i(e),r=p.default.parseCandidate(e.candidate),n=Object.assign(t,r);return n.toJSON=function(){return{candidate:n.candidate,sdpMid:n.sdpMid,sdpMLineIndex:n.sdpMLineIndex,usernameFragment:n.usernameFragment}},n}return new i(e)},t.RTCIceCandidate.prototype=i.prototype,o.wrapPeerConnectionEvent(t,"icecandidate",function(e){return e.candidate&&Object.defineProperty(e,"candidate",{value:new t.RTCIceCandidate(e.candidate),writable:"false"}),e})},r.shimMaxMessageSize=function(e){if(!e.RTCPeerConnection)return;var c=o.detectBrowser(e);"sctp"in e.RTCPeerConnection.prototype||Object.defineProperty(e.RTCPeerConnection.prototype,"sctp",{get:function(){return void 0===this._sctp?null:this._sctp}});var d=e.RTCPeerConnection.prototype.setRemoteDescription;e.RTCPeerConnection.prototype.setRemoteDescription=function(e){var t,r,n,i,a,o,s;return this._sctp=null,"chrome"===c.browser&&76<=c.version&&"plan-b"===this.getConfiguration().sdpSemantics&&Object.defineProperty(this,"sctp",{get:function(){return void 0===this._sctp?null:this._sctp},enumerable:!0,configurable:!0}),function(e){if(!e||!e.sdp)return!1;var t=p.default.splitSections(e.sdp);return t.shift(),t.some(function(e){var t=p.default.parseMLine(e);return t&&"application"===t.kind&&-1!==t.protocol.indexOf("SCTP")})}(e)&&(t=function(e){var t=e.sdp.match(/mozilla...THIS_IS_SDPARTA-(\d+)/);if(null===t||t.length<2)return-1;var r=parseInt(t[1],10);return r!=r?-1:r}(e),o=t,s=65536,"firefox"===c.browser&&(s=c.version<57?-1===o?16384:2147483637:c.version<60?57===c.version?65535:65536:2147483637),r=s,n=function(e,t){var r=65536;"firefox"===c.browser&&57===c.version&&(r=65535);var n=p.default.matchPrefix(e.sdp,"a=max-message-size:");return 0<n.length?r=parseInt(n[0].substr(19),10):"firefox"===c.browser&&-1!==t&&(r=2147483637),r}(e,t),i=void 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r=e.RTCPeerConnection.prototype;Object.defineProperty(r,"connectionState",{get:function(){return{completed:"connected",checking:"connecting"}[this.iceConnectionState]||this.iceConnectionState},enumerable:!0,configurable:!0}),Object.defineProperty(r,"onconnectionstatechange",{get:function(){return this._onconnectionstatechange||null},set:function(e){this._onconnectionstatechange&&(this.removeEventListener("connectionstatechange",this._onconnectionstatechange),delete this._onconnectionstatechange),e&&this.addEventListener("connectionstatechange",this._onconnectionstatechange=e)},enumerable:!0,configurable:!0}),["setLocalDescription","setRemoteDescription"].forEach(function(e){var t=r[e];r[e]=function(){return this._connectionstatechangepoly||(this._connectionstatechangepoly=function(e){var t,r=e.target;return r._lastConnectionState!==r.connectionState&&(r._lastConnectionState=r.connectionState,t=new 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n=e("./getusermedia");Object.defineProperty(r,"shimGetUserMedia",{enumerable:!0,get:function(){return n.shimGetUserMedia}});var i=e("./getdisplaymedia");Object.defineProperty(r,"shimGetDisplayMedia",{enumerable:!0,get:function(){return i.shimGetDisplayMedia}}),r.shimPeerConnection=function(e){var t=o.detectBrowser(e);{var r;e.RTCIceGatherer&&(e.RTCIceCandidate||(e.RTCIceCandidate=function(e){return e}),e.RTCSessionDescription||(e.RTCSessionDescription=function(e){return e}),t.version<15025&&(r=Object.getOwnPropertyDescriptor(e.MediaStreamTrack.prototype,"enabled"),Object.defineProperty(e.MediaStreamTrack.prototype,"enabled",{set:function(e){r.set.call(this,e);var t=new Event("enabled");t.enabled=e,this.dispatchEvent(t)}})))}!e.RTCRtpSender||"dtmf"in e.RTCRtpSender.prototype||Object.defineProperty(e.RTCRtpSender.prototype,"dtmf",{get:function(){return void 0===this._dtmf&&("audio"===this.track.kind?this._dtmf=new e.RTCDtmfSender(this):"video"===this.track.kind&&(this._dtmf=null)),this._dtmf}});e.RTCDtmfSender&&!e.RTCDTMFSender&&(e.RTCDTMFSender=e.RTCDtmfSender);var n=(0,d.default)(e,t.version);e.RTCPeerConnection=function(e){return e&&e.iceServers&&(e.iceServers=(0,s.filterIceServers)(e.iceServers,t.version),o.log("ICE servers after filtering:",e.iceServers)),new n(e)},e.RTCPeerConnection.prototype=n.prototype},r.shimReplaceTrack=function(e){!e.RTCRtpSender||"replaceTrack"in e.RTCRtpSender.prototype||(e.RTCRtpSender.prototype.replaceTrack=e.RTCRtpSender.prototype.setTrack)};var a,o=function(e){{if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r]);return t.default=e,t}}(e("../utils")),s=e("./filtericeservers"),c=e("rtcpeerconnection-shim"),d=(a=c)&&a.__esModule?a:{default:a}},{"../utils":15,"./filtericeservers":8,"./getdisplaymedia":9,"./getusermedia":10,"rtcpeerconnection-shim":16}],8:[function(e,t,r){"use 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r=e.RTCPeerConnection.prototype.getReceivers;r&&(e.RTCPeerConnection.prototype.getReceivers=function(){var t=this,e=r.apply(this,[]);return e.forEach(function(e){return e._pc=t}),e});s.wrapPeerConnectionEvent(e,"track",function(e){return e.receiver._pc=e.srcElement,e}),e.RTCRtpReceiver.prototype.getStats=function(){return this._pc.getStats(this.track)}},r.shimRemoveStream=function(e){if(!e.RTCPeerConnection||"removeStream"in e.RTCPeerConnection.prototype)return;e.RTCPeerConnection.prototype.removeStream=function(t){var r=this;s.deprecated("removeStream","removeTrack"),this.getSenders().forEach(function(e){e.track&&t.getTracks().includes(e.track)&&r.removeTrack(e)})}},r.shimRTCDataChannel=function(e){e.DataChannel&&!e.RTCDataChannel&&(e.RTCDataChannel=e.DataChannel)},r.shimAddTransceiver=function(e){if("object"!==(void 0===e?"undefined":c(e))||!e.RTCPeerConnection)return;var s=e.RTCPeerConnection.prototype.addTransceiver;s&&(e.RTCPeerConnection.prototype.addTransceiver=function(e,t){this.setParametersPromises=[];var r=t,n=r&&"sendEncodings"in r;n&&r.sendEncodings.forEach(function(e){if("rid"in e){if(!/^[a-z0-9]{0,16}$/i.test(e.rid))throw new TypeError("Invalid RID value provided.")}if("scaleResolutionDownBy"in e&&!(1<=parseFloat(e.scaleResolutionDownBy)))throw new RangeError("scale_resolution_down_by must be >= 1.0");if("maxFramerate"in e&&!(0<=parseFloat(e.maxFramerate)))throw new RangeError("max_framerate must be >= 0.0")});var i,a,o=s.apply(this,arguments);return n&&("encodings"in(a=(i=o.sender).getParameters())||(a.encodings=r.sendEncodings,this.setParametersPromises.push(i.setParameters(a).catch(function(){})))),o})},r.shimCreateOffer=function(e){if("object"!==(void 0===e?"undefined":c(e))||!e.RTCPeerConnection)return;var r=e.RTCPeerConnection.prototype.createOffer;e.RTCPeerConnection.prototype.createOffer=function(){var e=this,t=arguments;return this.setParametersPromises&&this.setParametersPromises.length?Promise.all(this.setParametersPromises).then(function(){return r.apply(e,t)}).finally(function(){e.setParametersPromises=[]}):r.apply(this,arguments)}},r.shimCreateAnswer=function(e){if("object"!==(void 0===e?"undefined":c(e))||!e.RTCPeerConnection)return;var r=e.RTCPeerConnection.prototype.createAnswer;e.RTCPeerConnection.prototype.createAnswer=function(){var e=this,t=arguments;return this.setParametersPromises&&this.setParametersPromises.length?Promise.all(this.setParametersPromises).then(function(){return r.apply(e,t)}).finally(function(){e.setParametersPromises=[]}):r.apply(this,arguments)}};var s=function(e){{if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r]);return t.default=e,t}}(e("../utils"))},{"../utils":15,"./getdisplaymedia":12,"./getusermedia":13}],12:[function(e,t,r){"use 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i,a,o,s;n.getUserMedia=function(e,t,r){d.deprecated("navigator.getUserMedia","navigator.mediaDevices.getUserMedia"),n.mediaDevices.getUserMedia(e).then(t,r)},55<t.version&&"autoGainControl"in n.mediaDevices.getSupportedConstraints()||(i=function(e,t,r){t in e&&!(r in e)&&(e[r]=e[t],delete e[t])},a=n.mediaDevices.getUserMedia.bind(n.mediaDevices),n.mediaDevices.getUserMedia=function(e){return"object"===(void 0===e?"undefined":c(e))&&"object"===c(e.audio)&&(e=JSON.parse(JSON.stringify(e)),i(e.audio,"autoGainControl","mozAutoGainControl"),i(e.audio,"noiseSuppression","mozNoiseSuppression")),a(e)},r&&r.prototype.getSettings&&(o=r.prototype.getSettings,r.prototype.getSettings=function(){var e=o.apply(this,arguments);return i(e,"mozAutoGainControl","autoGainControl"),i(e,"mozNoiseSuppression","noiseSuppression"),e}),r&&r.prototype.applyConstraints&&(s=r.prototype.applyConstraints,r.prototype.applyConstraints=function(e){return"audio"===this.kind&&"object"===(void 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e.RTCPeerConnection.prototype||(n=e.RTCPeerConnection.prototype.addTrack,e.RTCPeerConnection.prototype.addStream=function(t){var r=this;this._localStreams||(this._localStreams=[]),this._localStreams.includes(t)||this._localStreams.push(t),t.getAudioTracks().forEach(function(e){return n.call(r,e,t)}),t.getVideoTracks().forEach(function(e){return n.call(r,e,t)})},e.RTCPeerConnection.prototype.addTrack=function(e,t){var r=t;return r&&(this._localStreams?this._localStreams.includes(r)||this._localStreams.push(r):this._localStreams=[r]),n.apply(this,arguments)})}"removeStream"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.removeStream=function(e){var t=this;this._localStreams||(this._localStreams=[]);var r,n=this._localStreams.indexOf(e);-1!==n&&(this._localStreams.splice(n,1),r=e.getTracks(),this.getSenders().forEach(function(e){r.includes(e.track)&&t.removeTrack(e)}))})},r.shimRemoteStreamsAPI=function(e){if("object"!==(void 0===e?"undefined":d(e))||!e.RTCPeerConnection)return;"getRemoteStreams"in e.RTCPeerConnection.prototype||(e.RTCPeerConnection.prototype.getRemoteStreams=function(){return this._remoteStreams?this._remoteStreams:[]});{var t;"onaddstream"in e.RTCPeerConnection.prototype||(Object.defineProperty(e.RTCPeerConnection.prototype,"onaddstream",{get:function(){return this._onaddstream},set:function(e){var r=this;this._onaddstream&&(this.removeEventListener("addstream",this._onaddstream),this.removeEventListener("track",this._onaddstreampoly)),this.addEventListener("addstream",this._onaddstream=e),this.addEventListener("track",this._onaddstreampoly=function(e){e.streams.forEach(function(e){var t;r._remoteStreams||(r._remoteStreams=[]),r._remoteStreams.includes(e)||(r._remoteStreams.push(e),(t=new Event("addstream")).stream=e,r.dispatchEvent(t))})})}}),t=e.RTCPeerConnection.prototype.setRemoteDescription,e.RTCPeerConnection.prototype.setRemoteDescription=function(){var r=this;return this._onaddstreampoly||this.addEventListener("track",this._onaddstreampoly=function(e){e.streams.forEach(function(e){var t;r._remoteStreams||(r._remoteStreams=[]),0<=r._remoteStreams.indexOf(e)||(r._remoteStreams.push(e),(t=new Event("addstream")).stream=e,r.dispatchEvent(t))})}),t.apply(r,arguments)})}},r.shimCallbacksAPI=function(e){if("object"!==(void 0===e?"undefined":d(e))||!e.RTCPeerConnection)return;var t=e.RTCPeerConnection.prototype,a=t.createOffer,o=t.createAnswer,i=t.setLocalDescription,s=t.setRemoteDescription,c=t.addIceCandidate;t.createOffer=function(e,t,r){var n=2<=arguments.length?r:e,i=a.apply(this,[n]);return t?(i.then(e,t),Promise.resolve()):i},t.createAnswer=function(e,t,r){var n=2<=arguments.length?r:e,i=o.apply(this,[n]);return t?(i.then(e,t),Promise.resolve()):i};var r=function(e,t,r){var n=i.apply(this,[e]);return r?(n.then(t,r),Promise.resolve()):n};t.setLocalDescription=r,r=function(e,t,r){var n=s.apply(this,[e]);return r?(n.then(t,r),Promise.resolve()):n},t.setRemoteDescription=r,r=function(e,t,r){var n=c.apply(this,[e]);return r?(n.then(t,r),Promise.resolve()):n},t.addIceCandidate=r},r.shimGetUserMedia=function(e){var n=e&&e.navigator;{var t,r;n.mediaDevices&&n.mediaDevices.getUserMedia&&(t=n.mediaDevices,r=t.getUserMedia.bind(t),n.mediaDevices.getUserMedia=function(e){return r(i(e))})}!n.getUserMedia&&n.mediaDevices&&n.mediaDevices.getUserMedia&&(n.getUserMedia=function(e,t,r){n.mediaDevices.getUserMedia(e).then(t,r)}.bind(n))},r.shimConstraints=i,r.shimRTCIceServerUrls=function(e){var a=e.RTCPeerConnection;e.RTCPeerConnection=function(e,t){if(e&&e.iceServers){for(var r=[],n=0;n<e.iceServers.length;n++){var i=e.iceServers[n];!i.hasOwnProperty("urls")&&i.hasOwnProperty("url")?(o.deprecated("RTCIceServer.url","RTCIceServer.urls"),(i=JSON.parse(JSON.stringify(i))).urls=i.url,delete i.url,r.push(i)):r.push(e.iceServers[n])}e.iceServers=r}return new a(e,t)},e.RTCPeerConnection.prototype=a.prototype,"generateCertificate"in e.RTCPeerConnection&&Object.defineProperty(e.RTCPeerConnection,"generateCertificate",{get:function(){return a.generateCertificate}})},r.shimTrackEventTransceiver=function(e){"object"===(void 0===e?"undefined":d(e))&&e.RTCTrackEvent&&"receiver"in e.RTCTrackEvent.prototype&&!("transceiver"in e.RTCTrackEvent.prototype)&&Object.defineProperty(e.RTCTrackEvent.prototype,"transceiver",{get:function(){return{receiver:this.receiver}}})},r.shimCreateOfferLegacy=function(e){var n=e.RTCPeerConnection.prototype.createOffer;e.RTCPeerConnection.prototype.createOffer=function(e){var t,r;return e&&(void 0!==e.offerToReceiveAudio&&(e.offerToReceiveAudio=!!e.offerToReceiveAudio),t=this.getTransceivers().find(function(e){return"audio"===e.receiver.track.kind}),!1===e.offerToReceiveAudio&&t?"sendrecv"===t.direction?t.setDirection?t.setDirection("sendonly"):t.direction="sendonly":"recvonly"===t.direction&&(t.setDirection?t.setDirection("inactive"):t.direction="inactive"):!0!==e.offerToReceiveAudio||t||this.addTransceiver("audio"),void 0!==e.offerToReceiveVideo&&(e.offerToReceiveVideo=!!e.offerToReceiveVideo),r=this.getTransceivers().find(function(e){return"video"===e.receiver.track.kind}),!1===e.offerToReceiveVideo&&r?"sendrecv"===r.direction?r.setDirection?r.setDirection("sendonly"):r.direction="sendonly":"recvonly"===r.direction&&(r.setDirection?r.setDirection("inactive"):r.direction="inactive"):!0!==e.offerToReceiveVideo||r||this.addTransceiver("video")),n.apply(this,arguments)}};var o=function(e){{if(e&&e.__esModule)return e;var t={};if(null!=e)for(var r in e)Object.prototype.hasOwnProperty.call(e,r)&&(t[r]=e[r]);return t.default=e,t}}(e("../utils"));function i(e){return e&&void 0!==e.video?Object.assign({},e,{video:o.compactObject(e.video)}):e}},{"../utils":15}],15:[function(e,t,r){"use strict";Object.defineProperty(r,"__esModule",{value:!0});var n="function"==typeof Symbol&&"symbol"==typeof Symbol.iterator?function(e){return typeof e}:function(e){return e&&"function"==typeof Symbol&&e.constructor===Symbol&&e!==Symbol.prototype?"symbol":typeof e};function s(e,t,r){return t in e?Object.defineProperty(e,t,{value:r,enumerable:!0,configurable:!0,writable:!0}):e[t]=r,e}r.extractVersion=o,r.wrapPeerConnectionEvent=function(e,n,i){if(!e.RTCPeerConnection)return;var t=e.RTCPeerConnection.prototype,a=t.addEventListener;t.addEventListener=function(e,r){if(e!==n)return a.apply(this,arguments);function t(e){var t=i(e);t&&r(t)}return this._eventMap=this._eventMap||{},this._eventMap[r]=t,a.apply(this,[e,t])};var o=t.removeEventListener;t.removeEventListener=function(e,t){if(e!==n||!this._eventMap||!this._eventMap[t])return o.apply(this,arguments);var r=this._eventMap[t];return delete this._eventMap[t],o.apply(this,[e,r])},Object.defineProperty(t,"on"+n,{get:function(){return this["_on"+n]},set:function(e){this["_on"+n]&&(this.removeEventListener(n,this["_on"+n]),delete this["_on"+n]),e&&this.addEventListener(n,this["_on"+n]=e)},enumerable:!0,configurable:!0})},r.disableLog=function(e){return"boolean"==typeof e?(i=e)?"adapter.js logging disabled":"adapter.js logging enabled":new Error("Argument type: "+(void 0===e?"undefined":n(e))+". Please use a boolean.")},r.disableWarnings=function(e){return"boolean"==typeof e?(a=!e,"adapter.js deprecation warnings "+(e?"disabled":"enabled")):new Error("Argument type: "+(void 0===e?"undefined":n(e))+". Please use a boolean.")},r.log=function(){if("object"===("undefined"==typeof window?"undefined":n(window))){if(i)return;"undefined"!=typeof console&&"function"==typeof console.log&&console.log.apply(console,arguments)}},r.deprecated=function(e,t){if(!a)return;console.warn(e+" is deprecated, please use "+t+" instead.")},r.detectBrowser=function(e){var t=e.navigator,r={browser:null,version:null};if(void 0===e||!e.navigator)return r.browser="Not a browser.",r;if(t.mozGetUserMedia)r.browser="firefox",r.version=o(t.userAgent,/Firefox\/(\d+)\./,1);else if(t.webkitGetUserMedia||!1===e.isSecureContext&&e.webkitRTCPeerConnection&&!e.RTCIceGatherer)r.browser="chrome",r.version=o(t.userAgent,/Chrom(e|ium)\/(\d+)\./,2);else if(t.mediaDevices&&t.userAgent.match(/Edge\/(\d+).(\d+)$/))r.browser="edge",r.version=o(t.userAgent,/Edge\/(\d+).(\d+)$/,2);else{if(!e.RTCPeerConnection||!t.userAgent.match(/AppleWebKit\/(\d+)\./))return r.browser="Not a supported browser.",r;r.browser="safari",r.version=o(t.userAgent,/AppleWebKit\/(\d+)\./,1),r.supportsUnifiedPlan=e.RTCRtpTransceiver&&"currentDirection"in e.RTCRtpTransceiver.prototype}return r},r.compactObject=function a(o){if(!c(o))return o;return Object.keys(o).reduce(function(e,t){var r=c(o[t]),n=r?a(o[t]):o[t],i=r&&!Object.keys(n).length;return void 0===n||i?e:Object.assign(e,s({},t,n))},{})},r.walkStats=d,r.filterStats=function(r,t,e){var n=e?"outbound-rtp":"inbound-rtp",i=new Map;if(null===t)return i;var a=[];return r.forEach(function(e){"track"===e.type&&e.trackIdentifier===t.id&&a.push(e)}),a.forEach(function(t){r.forEach(function(e){e.type===n&&e.trackId===t.id&&d(r,e,i)})}),i};var i=!0,a=!0;function o(e,t,r){var n=e.match(t);return n&&n.length>=r&&parseInt(n[r],10)}function c(e){return"[object Object]"===Object.prototype.toString.call(e)}function d(t,r,n){r&&!n.has(r.id)&&(n.set(r.id,r),Object.keys(r).forEach(function(e){e.endsWith("Id")?d(t,t.get(r[e]),n):e.endsWith("Ids")&&r[e].forEach(function(e){d(t,t.get(e),n)})}))}},{}],16:[function(e,t,r){"use strict";var G=e("sdp");function c(e,t,r,n,i){var a,o,s=G.writeRtpDescription(e.kind,t);return s+=G.writeIceParameters(e.iceGatherer.getLocalParameters()),s+=G.writeDtlsParameters(e.dtlsTransport.getLocalParameters(),"offer"===r?"actpass":i||"active"),s+="a=mid:"+e.mid+"\r\n",e.rtpSender&&e.rtpReceiver?s+="a=sendrecv\r\n":e.rtpSender?s+="a=sendonly\r\n":e.rtpReceiver?s+="a=recvonly\r\n":s+="a=inactive\r\n",e.rtpSender&&(a=e.rtpSender._initialTrackId||e.rtpSender.track.id,e.rtpSender._initialTrackId=a,s+="a="+(o="msid:"+(n?n.id:"-")+" "+a+"\r\n"),s+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" "+o,e.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" "+o,s+="a=ssrc-group:FID "+e.sendEncodingParameters[0].ssrc+" "+e.sendEncodingParameters[0].rtx.ssrc+"\r\n")),s+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" cname:"+G.localCName+"\r\n",e.rtpSender&&e.sendEncodingParameters[0].rtx&&(s+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" cname:"+G.localCName+"\r\n"),s}function A(d,p){function u(e,t){e=parseInt(e,10);for(var r=0;r<t.length;r++)if(t[r].payloadType===e||t[r].preferredPayloadType===e)return t[r]}var f={codecs:[],headerExtensions:[],fecMechanisms:[]};return d.codecs.forEach(function(r){for(var e,t,n,i,a,o,s=0;s<p.codecs.length;s++){var c=p.codecs[s];if(r.name.toLowerCase()===c.name.toLowerCase()&&r.clockRate===c.clockRate){if("rtx"===r.name.toLowerCase()&&r.parameters&&c.parameters.apt&&(e=r,t=c,n=d.codecs,i=p.codecs,o=a=void 0,a=u(e.parameters.apt,n),o=u(t.parameters.apt,i),!a||!o||a.name.toLowerCase()!==o.name.toLowerCase()))continue;(c=JSON.parse(JSON.stringify(c))).numChannels=Math.min(r.numChannels,c.numChannels),f.codecs.push(c),c.rtcpFeedback=c.rtcpFeedback.filter(function(e){for(var t=0;t<r.rtcpFeedback.length;t++)if(r.rtcpFeedback[t].type===e.type&&r.rtcpFeedback[t].parameter===e.parameter)return!0;return!1});break}}}),d.headerExtensions.forEach(function(e){for(var t=0;t<p.headerExtensions.length;t++){var r=p.headerExtensions[t];if(e.uri===r.uri){f.headerExtensions.push(r);break}}}),f}function a(e,t,r){return-1!=={offer:{setLocalDescription:["stable","have-local-offer"],setRemoteDescription:["stable","have-remote-offer"]},answer:{setLocalDescription:["have-remote-offer","have-local-pranswer"],setRemoteDescription:["have-local-offer","have-remote-pranswer"]}}[t][e].indexOf(r)}function N(e,t){var r=e.getRemoteCandidates().find(function(e){return t.foundation===e.foundation&&t.ip===e.ip&&t.port===e.port&&t.priority===e.priority&&t.protocol===e.protocol&&t.type===e.type});return r||e.addRemoteCandidate(t),!r}function m(e,t){var r=new Error(t);return r.name=e,r.code={NotSupportedError:9,InvalidStateError:11,InvalidAccessError:15,TypeError:void 0,OperationError:void 0}[e],r}t.exports=function(I,j){function L(e,t){t.addTrack(e),t.dispatchEvent(new I.MediaStreamTrackEvent("addtrack",{track:e}))}function i(e,t,r,n){var i=new Event("track");i.track=t,i.receiver=r,i.transceiver={receiver:r},i.streams=n,I.setTimeout(function(){e._dispatchEvent("track",i)})}function n(e){var t,n,i,r=this,a=document.createDocumentFragment();if(["addEventListener","removeEventListener","dispatchEvent"].forEach(function(e){r[e]=a[e].bind(a)}),this.canTrickleIceCandidates=null,this.needNegotiation=!1,this.localStreams=[],this.remoteStreams=[],this._localDescription=null,this._remoteDescription=null,this.signalingState="stable",this.iceConnectionState="new",this.connectionState="new",this.iceGatheringState="new",e=JSON.parse(JSON.stringify(e||{})),this.usingBundle="max-bundle"===e.bundlePolicy,"negotiate"===e.rtcpMuxPolicy)throw m("NotSupportedError","rtcpMuxPolicy 'negotiate' is not supported");switch(e.rtcpMuxPolicy||(e.rtcpMuxPolicy="require"),e.iceTransportPolicy){case"all":case"relay":break;default:e.iceTransportPolicy="all"}switch(e.bundlePolicy){case"balanced":case"max-compat":case"max-bundle":break;default:e.bundlePolicy="balanced"}if(e.iceServers=(t=e.iceServers||[],n=j,i=!1,(t=JSON.parse(JSON.stringify(t))).filter(function(e){if(e&&(e.urls||e.url)){var t=e.urls||e.url;e.url&&!e.urls&&console.warn("RTCIceServer.url is deprecated! Use urls instead.");var r="string"==typeof t;return r&&(t=[t]),t=t.filter(function(e){return 0!==e.indexOf("turn:")||-1===e.indexOf("transport=udp")||-1!==e.indexOf("turn:[")||i?0===e.indexOf("stun:")&&14393<=n&&-1===e.indexOf("?transport=udp"):i=!0}),delete e.url,e.urls=r?t[0]:t,!!t.length}})),this._iceGatherers=[],e.iceCandidatePoolSize)for(var o=e.iceCandidatePoolSize;0<o;o--)this._iceGatherers.push(new I.RTCIceGatherer({iceServers:e.iceServers,gatherPolicy:e.iceTransportPolicy}));else e.iceCandidatePoolSize=0;this._config=e,this.transceivers=[],this._sdpSessionId=G.generateSessionId(),this._sdpSessionVersion=0,this._dtlsRole=void 0,this._isClosed=!1}Object.defineProperty(n.prototype,"localDescription",{configurable:!0,get:function(){return this._localDescription}}),Object.defineProperty(n.prototype,"remoteDescription",{configurable:!0,get:function(){return this._remoteDescription}}),n.prototype.onicecandidate=null,n.prototype.onaddstream=null,n.prototype.ontrack=null,n.prototype.onremovestream=null,n.prototype.onsignalingstatechange=null,n.prototype.oniceconnectionstatechange=null,n.prototype.onconnectionstatechange=null,n.prototype.onicegatheringstatechange=null,n.prototype.onnegotiationneeded=null,n.prototype.ondatachannel=null,n.prototype._dispatchEvent=function(e,t){this._isClosed||(this.dispatchEvent(t),"function"==typeof this["on"+e]&&this["on"+e](t))},n.prototype._emitGatheringStateChange=function(){var e=new Event("icegatheringstatechange");this._dispatchEvent("icegatheringstatechange",e)},n.prototype.getConfiguration=function(){return this._config},n.prototype.getLocalStreams=function(){return this.localStreams},n.prototype.getRemoteStreams=function(){return this.remoteStreams},n.prototype._createTransceiver=function(e,t){var r,n=0<this.transceivers.length,i={track:null,iceGatherer:null,iceTransport:null,dtlsTransport:null,localCapabilities:null,remoteCapabilities:null,rtpSender:null,rtpReceiver:null,kind:e,mid:null,sendEncodingParameters:null,recvEncodingParameters:null,stream:null,associatedRemoteMediaStreams:[],wantReceive:!0};return this.usingBundle&&n?(i.iceTransport=this.transceivers[0].iceTransport,i.dtlsTransport=this.transceivers[0].dtlsTransport):(r=this._createIceAndDtlsTransports(),i.iceTransport=r.iceTransport,i.dtlsTransport=r.dtlsTransport),t||this.transceivers.push(i),i},n.prototype.addTrack=function(t,e){if(this._isClosed)throw m("InvalidStateError","Attempted to call addTrack on a closed peerconnection.");var r;if(this.transceivers.find(function(e){return e.track===t}))throw m("InvalidAccessError","Track already exists.");for(var n=0;n<this.transceivers.length;n++)this.transceivers[n].track||this.transceivers[n].kind!==t.kind||(r=this.transceivers[n]);return r=r||this._createTransceiver(t.kind),this._maybeFireNegotiationNeeded(),-1===this.localStreams.indexOf(e)&&this.localStreams.push(e),r.track=t,r.stream=e,r.rtpSender=new I.RTCRtpSender(t,r.dtlsTransport),r.rtpSender},n.prototype.addStream=function(t){var n,r=this;15025<=j?t.getTracks().forEach(function(e){r.addTrack(e,t)}):(n=t.clone(),t.getTracks().forEach(function(e,t){var r=n.getTracks()[t];e.addEventListener("enabled",function(e){r.enabled=e.enabled})}),n.getTracks().forEach(function(e){r.addTrack(e,n)}))},n.prototype.removeTrack=function(t){if(this._isClosed)throw m("InvalidStateError","Attempted to call removeTrack on a closed peerconnection.");if(!(t instanceof I.RTCRtpSender))throw new TypeError("Argument 1 of RTCPeerConnection.removeTrack does not implement interface RTCRtpSender.");var e=this.transceivers.find(function(e){return e.rtpSender===t});if(!e)throw m("InvalidAccessError","Sender was not created by this connection.");var r=e.stream;e.rtpSender.stop(),e.rtpSender=null,e.track=null,e.stream=null,-1===this.transceivers.map(function(e){return e.stream}).indexOf(r)&&-1<this.localStreams.indexOf(r)&&this.localStreams.splice(this.localStreams.indexOf(r),1),this._maybeFireNegotiationNeeded()},n.prototype.removeStream=function(e){var r=this;e.getTracks().forEach(function(t){var e=r.getSenders().find(function(e){return e.track===t});e&&r.removeTrack(e)})},n.prototype.getSenders=function(){return this.transceivers.filter(function(e){return!!e.rtpSender}).map(function(e){return e.rtpSender})},n.prototype.getReceivers=function(){return this.transceivers.filter(function(e){return!!e.rtpReceiver}).map(function(e){return e.rtpReceiver})},n.prototype._createIceGatherer=function(r,e){var n=this;if(e&&0<r)return this.transceivers[0].iceGatherer;if(this._iceGatherers.length)return this._iceGatherers.shift();var i=new I.RTCIceGatherer({iceServers:this._config.iceServers,gatherPolicy:this._config.iceTransportPolicy});return Object.defineProperty(i,"state",{value:"new",writable:!0}),this.transceivers[r].bufferedCandidateEvents=[],this.transceivers[r].bufferCandidates=function(e){var t=!e.candidate||0===Object.keys(e.candidate).length;i.state=t?"completed":"gathering",null!==n.transceivers[r].bufferedCandidateEvents&&n.transceivers[r].bufferedCandidateEvents.push(e)},i.addEventListener("localcandidate",this.transceivers[r].bufferCandidates),i},n.prototype._gather=function(s,c){var e,d=this,p=this.transceivers[c].iceGatherer;p.onlocalcandidate||(e=this.transceivers[c].bufferedCandidateEvents,this.transceivers[c].bufferedCandidateEvents=null,p.removeEventListener("localcandidate",this.transceivers[c].bufferCandidates),p.onlocalcandidate=function(e){var t,r,n,i,a,o;d.usingBundle&&0<c||((t=new Event("icecandidate")).candidate={sdpMid:s,sdpMLineIndex:c},(n=!(r=e.candidate)||0===Object.keys(r).length)?"new"!==p.state&&"gathering"!==p.state||(p.state="completed"):("new"===p.state&&(p.state="gathering"),r.component=1,r.ufrag=p.getLocalParameters().usernameFragment,i=G.writeCandidate(r),t.candidate=Object.assign(t.candidate,G.parseCandidate(i)),t.candidate.candidate=i,t.candidate.toJSON=function(){return{candidate:t.candidate.candidate,sdpMid:t.candidate.sdpMid,sdpMLineIndex:t.candidate.sdpMLineIndex,usernameFragment:t.candidate.usernameFragment}}),(a=G.getMediaSections(d._localDescription.sdp))[t.candidate.sdpMLineIndex]+=n?"a=end-of-candidates\r\n":"a="+t.candidate.candidate+"\r\n",d._localDescription.sdp=G.getDescription(d._localDescription.sdp)+a.join(""),o=d.transceivers.every(function(e){return e.iceGatherer&&"completed"===e.iceGatherer.state}),"gathering"!==d.iceGatheringState&&(d.iceGatheringState="gathering",d._emitGatheringStateChange()),n||d._dispatchEvent("icecandidate",t),o&&(d._dispatchEvent("icecandidate",new Event("icecandidate")),d.iceGatheringState="complete",d._emitGatheringStateChange()))},I.setTimeout(function(){e.forEach(function(e){p.onlocalcandidate(e)})},0))},n.prototype._createIceAndDtlsTransports=function(){var e=this,t=new I.RTCIceTransport(null);t.onicestatechange=function(){e._updateIceConnectionState(),e._updateConnectionState()};var r=new I.RTCDtlsTransport(t);return r.ondtlsstatechange=function(){e._updateConnectionState()},r.onerror=function(){Object.defineProperty(r,"state",{value:"failed",writable:!0}),e._updateConnectionState()},{iceTransport:t,dtlsTransport:r}},n.prototype._disposeIceAndDtlsTransports=function(e){var t=this.transceivers[e].iceGatherer;t&&(delete t.onlocalcandidate,delete this.transceivers[e].iceGatherer);var r=this.transceivers[e].iceTransport;r&&(delete r.onicestatechange,delete this.transceivers[e].iceTransport);var n=this.transceivers[e].dtlsTransport;n&&(delete n.ondtlsstatechange,delete n.onerror,delete this.transceivers[e].dtlsTransport)},n.prototype._transceive=function(e,t,r){var n=A(e.localCapabilities,e.remoteCapabilities);t&&e.rtpSender&&(n.encodings=e.sendEncodingParameters,n.rtcp={cname:G.localCName,compound:e.rtcpParameters.compound},e.recvEncodingParameters.length&&(n.rtcp.ssrc=e.recvEncodingParameters[0].ssrc),e.rtpSender.send(n)),r&&e.rtpReceiver&&0<n.codecs.length&&("video"===e.kind&&e.recvEncodingParameters&&j<15019&&e.recvEncodingParameters.forEach(function(e){delete e.rtx}),e.recvEncodingParameters.length?n.encodings=e.recvEncodingParameters:n.encodings=[{}],n.rtcp={compound:e.rtcpParameters.compound},e.rtcpParameters.cname&&(n.rtcp.cname=e.rtcpParameters.cname),e.sendEncodingParameters.length&&(n.rtcp.ssrc=e.sendEncodingParameters[0].ssrc),e.rtpReceiver.receive(n))},n.prototype.setLocalDescription=function(e){var t,u,f,l=this;return-1===["offer","answer"].indexOf(e.type)?Promise.reject(m("TypeError",'Unsupported type "'+e.type+'"')):!a("setLocalDescription",e.type,l.signalingState)||l._isClosed?Promise.reject(m("InvalidStateError","Can not set local "+e.type+" in state "+l.signalingState)):("offer"===e.type?(t=G.splitSections(e.sdp),u=t.shift(),t.forEach(function(e,t){var r=G.parseRtpParameters(e);l.transceivers[t].localCapabilities=r}),l.transceivers.forEach(function(e,t){l._gather(e.mid,t)})):"answer"===e.type&&(t=G.splitSections(l._remoteDescription.sdp),u=t.shift(),f=0<G.matchPrefix(u,"a=ice-lite").length,t.forEach(function(e,t){var r,n,i,a=l.transceivers[t],o=a.iceGatherer,s=a.iceTransport,c=a.dtlsTransport,d=a.localCapabilities,p=a.remoteCapabilities;G.isRejected(e)&&0===G.matchPrefix(e,"a=bundle-only").length||a.rejected||(r=G.getIceParameters(e,u),n=G.getDtlsParameters(e,u),f&&(n.role="server"),l.usingBundle&&0!==t||(l._gather(a.mid,t),"new"===s.state&&s.start(o,r,f?"controlling":"controlled"),"new"===c.state&&c.start(n)),i=A(d,p),l._transceive(a,0<i.codecs.length,!1))})),l._localDescription={type:e.type,sdp:e.sdp},"offer"===e.type?l._updateSignalingState("have-local-offer"):l._updateSignalingState("stable"),Promise.resolve())},n.prototype.setRemoteDescription=function(_){var w=this;if(-1===["offer","answer"].indexOf(_.type))return Promise.reject(m("TypeError",'Unsupported type "'+_.type+'"'));if(!a("setRemoteDescription",_.type,w.signalingState)||w._isClosed)return Promise.reject(m("InvalidStateError","Can not set remote "+_.type+" in state "+w.signalingState));var k={};w.remoteStreams.forEach(function(e){k[e.id]=e});var x=[],e=G.splitSections(_.sdp),M=e.shift(),D=0<G.matchPrefix(M,"a=ice-lite").length,O=0<G.matchPrefix(M,"a=group:BUNDLE ").length;w.usingBundle=O;var t=G.matchPrefix(M,"a=ice-options:")[0];return w.canTrickleIceCandidates=!!t&&0<=t.substr(14).split(" ").indexOf("trickle"),e.forEach(function(e,t){var i,r,n,a,o,s,c,d,p,u,f,l,m,h,v,y,g,C=G.splitLines(e),S=G.getKind(e),T=G.isRejected(e)&&0===G.matchPrefix(e,"a=bundle-only").length,P=C[0].substr(2).split(" ")[2],R=G.getDirection(e,M),b=G.parseMsid(e),E=G.getMid(e)||G.generateIdentifier();T||"application"===S&&("DTLS/SCTP"===P||"UDP/DTLS/SCTP"===P)?w.transceivers[t]={mid:E,kind:S,protocol:P,rejected:!0}:(!T&&w.transceivers[t]&&w.transceivers[t].rejected&&(w.transceivers[t]=w._createTransceiver(S,!0)),o=G.parseRtpParameters(e),T||(s=G.getIceParameters(e,M),(c=G.getDtlsParameters(e,M)).role="client"),n=G.parseRtpEncodingParameters(e),d=G.parseRtcpParameters(e),p=0<G.matchPrefix(e,"a=end-of-candidates",M).length,u=G.matchPrefix(e,"a=candidate:").map(function(e){return G.parseCandidate(e)}).filter(function(e){return 1===e.component}),("offer"===_.type||"answer"===_.type)&&!T&&O&&0<t&&w.transceivers[t]&&(w._disposeIceAndDtlsTransports(t),w.transceivers[t].iceGatherer=w.transceivers[0].iceGatherer,w.transceivers[t].iceTransport=w.transceivers[0].iceTransport,w.transceivers[t].dtlsTransport=w.transceivers[0].dtlsTransport,w.transceivers[t].rtpSender&&w.transceivers[t].rtpSender.setTransport(w.transceivers[0].dtlsTransport),w.transceivers[t].rtpReceiver&&w.transceivers[t].rtpReceiver.setTransport(w.transceivers[0].dtlsTransport)),"offer"!==_.type||T?"answer"!==_.type||T||(f=(i=w.transceivers[t]).iceGatherer,l=i.iceTransport,m=i.dtlsTransport,g=i.rtpReceiver,r=i.sendEncodingParameters,a=i.localCapabilities,w.transceivers[t].recvEncodingParameters=n,w.transceivers[t].remoteCapabilities=o,w.transceivers[t].rtcpParameters=d,u.length&&"new"===l.state&&(!D&&!p||O&&0!==t?u.forEach(function(e){N(i.iceTransport,e)}):l.setRemoteCandidates(u)),O&&0!==t||("new"===l.state&&l.start(f,s,"controlling"),"new"===m.state&&m.start(c)),!A(i.localCapabilities,i.remoteCapabilities).codecs.filter(function(e){return"rtx"===e.name.toLowerCase()}).length&&i.sendEncodingParameters[0].rtx&&delete i.sendEncodingParameters[0].rtx,w._transceive(i,"sendrecv"===R||"recvonly"===R,"sendrecv"===R||"sendonly"===R),!g||"sendrecv"!==R&&"sendonly"!==R?delete i.rtpReceiver:(v=g.track,b?(k[b.stream]||(k[b.stream]=new I.MediaStream),L(v,k[b.stream]),x.push([v,g,k[b.stream]])):(k.default||(k.default=new I.MediaStream),L(v,k.default),x.push([v,g,k.default])))):((i=w.transceivers[t]||w._createTransceiver(S)).mid=E,i.iceGatherer||(i.iceGatherer=w._createIceGatherer(t,O)),u.length&&"new"===i.iceTransport.state&&(!p||O&&0!==t?u.forEach(function(e){N(i.iceTransport,e)}):i.iceTransport.setRemoteCandidates(u)),a=I.RTCRtpReceiver.getCapabilities(S),j<15019&&(a.codecs=a.codecs.filter(function(e){return"rtx"!==e.name})),r=i.sendEncodingParameters||[{ssrc:1001*(2*t+2)}],y=!1,"sendrecv"===R||"sendonly"===R?(y=!i.rtpReceiver,g=i.rtpReceiver||new I.RTCRtpReceiver(i.dtlsTransport,S),y&&(v=g.track,b&&"-"===b.stream||(h=b?(k[b.stream]||(k[b.stream]=new I.MediaStream,Object.defineProperty(k[b.stream],"id",{get:function(){return b.stream}})),Object.defineProperty(v,"id",{get:function(){return b.track}}),k[b.stream]):(k.default||(k.default=new I.MediaStream),k.default)),h&&(L(v,h),i.associatedRemoteMediaStreams.push(h)),x.push([v,g,h]))):i.rtpReceiver&&i.rtpReceiver.track&&(i.associatedRemoteMediaStreams.forEach(function(e){var t,r,n=e.getTracks().find(function(e){return e.id===i.rtpReceiver.track.id});n&&(t=n,(r=e).removeTrack(t),r.dispatchEvent(new I.MediaStreamTrackEvent("removetrack",{track:t})))}),i.associatedRemoteMediaStreams=[]),i.localCapabilities=a,i.remoteCapabilities=o,i.rtpReceiver=g,i.rtcpParameters=d,i.sendEncodingParameters=r,i.recvEncodingParameters=n,w._transceive(w.transceivers[t],!1,y)))}),void 0===w._dtlsRole&&(w._dtlsRole="offer"===_.type?"active":"passive"),w._remoteDescription={type:_.type,sdp:_.sdp},"offer"===_.type?w._updateSignalingState("have-remote-offer"):w._updateSignalingState("stable"),Object.keys(k).forEach(function(e){var t,n=k[e];n.getTracks().length&&(-1===w.remoteStreams.indexOf(n)&&(w.remoteStreams.push(n),(t=new Event("addstream")).stream=n,I.setTimeout(function(){w._dispatchEvent("addstream",t)})),x.forEach(function(e){var t=e[0],r=e[1];n.id===e[2].id&&i(w,t,r,[n])}))}),x.forEach(function(e){e[2]||i(w,e[0],e[1],[])}),I.setTimeout(function(){w&&w.transceivers&&w.transceivers.forEach(function(e){e.iceTransport&&"new"===e.iceTransport.state&&0<e.iceTransport.getRemoteCandidates().length&&(console.warn("Timeout for addRemoteCandidate. Consider sending an end-of-candidates notification"),e.iceTransport.addRemoteCandidate({}))})},4e3),Promise.resolve()},n.prototype.close=function(){this.transceivers.forEach(function(e){e.iceTransport&&e.iceTransport.stop(),e.dtlsTransport&&e.dtlsTransport.stop(),e.rtpSender&&e.rtpSender.stop(),e.rtpReceiver&&e.rtpReceiver.stop()}),this._isClosed=!0,this._updateSignalingState("closed")},n.prototype._updateSignalingState=function(e){this.signalingState=e;var t=new Event("signalingstatechange");this._dispatchEvent("signalingstatechange",t)},n.prototype._maybeFireNegotiationNeeded=function(){var t=this;"stable"===this.signalingState&&!0!==this.needNegotiation&&(this.needNegotiation=!0,I.setTimeout(function(){var e;t.needNegotiation&&(t.needNegotiation=!1,e=new Event("negotiationneeded"),t._dispatchEvent("negotiationneeded",e))},0))},n.prototype._updateIceConnectionState=function(){var e,t,r={new:0,closed:0,checking:0,connected:0,completed:0,disconnected:0,failed:0};this.transceivers.forEach(function(e){e.iceTransport&&!e.rejected&&r[e.iceTransport.state]++}),e="new",0<r.failed?e="failed":0<r.checking?e="checking":0<r.disconnected?e="disconnected":0<r.new?e="new":0<r.connected?e="connected":0<r.completed&&(e="completed"),e!==this.iceConnectionState&&(this.iceConnectionState=e,t=new Event("iceconnectionstatechange"),this._dispatchEvent("iceconnectionstatechange",t))},n.prototype._updateConnectionState=function(){var e,t,r={new:0,closed:0,connecting:0,connected:0,completed:0,disconnected:0,failed:0};this.transceivers.forEach(function(e){e.iceTransport&&e.dtlsTransport&&!e.rejected&&(r[e.iceTransport.state]++,r[e.dtlsTransport.state]++)}),r.connected+=r.completed,e="new",0<r.failed?e="failed":0<r.connecting?e="connecting":0<r.disconnected?e="disconnected":0<r.new?e="new":0<r.connected&&(e="connected"),e!==this.connectionState&&(this.connectionState=e,t=new Event("connectionstatechange"),this._dispatchEvent("connectionstatechange",t))},n.prototype.createOffer=function(){var s=this;if(s._isClosed)return Promise.reject(m("InvalidStateError","Can not call createOffer after close"));var t=s.transceivers.filter(function(e){return"audio"===e.kind}).length,r=s.transceivers.filter(function(e){return"video"===e.kind}).length,e=arguments[0];if(e){if(e.mandatory||e.optional)throw new TypeError("Legacy mandatory/optional constraints not supported.");void 0!==e.offerToReceiveAudio&&(t=!0===e.offerToReceiveAudio?1:!1===e.offerToReceiveAudio?0:e.offerToReceiveAudio),void 0!==e.offerToReceiveVideo&&(r=!0===e.offerToReceiveVideo?1:!1===e.offerToReceiveVideo?0:e.offerToReceiveVideo)}for(s.transceivers.forEach(function(e){"audio"===e.kind?--t<0&&(e.wantReceive=!1):"video"===e.kind&&--r<0&&(e.wantReceive=!1)});0<t||0<r;)0<t&&(s._createTransceiver("audio"),t--),0<r&&(s._createTransceiver("video"),r--);var n=G.writeSessionBoilerplate(s._sdpSessionId,s._sdpSessionVersion++);s.transceivers.forEach(function(e,t){var r=e.track,n=e.kind,i=e.mid||G.generateIdentifier();e.mid=i,e.iceGatherer||(e.iceGatherer=s._createIceGatherer(t,s.usingBundle));var a=I.RTCRtpSender.getCapabilities(n);j<15019&&(a.codecs=a.codecs.filter(function(e){return"rtx"!==e.name})),a.codecs.forEach(function(t){"H264"===t.name&&void 0===t.parameters["level-asymmetry-allowed"]&&(t.parameters["level-asymmetry-allowed"]="1"),e.remoteCapabilities&&e.remoteCapabilities.codecs&&e.remoteCapabilities.codecs.forEach(function(e){t.name.toLowerCase()===e.name.toLowerCase()&&t.clockRate===e.clockRate&&(t.preferredPayloadType=e.payloadType)})}),a.headerExtensions.forEach(function(t){(e.remoteCapabilities&&e.remoteCapabilities.headerExtensions||[]).forEach(function(e){t.uri===e.uri&&(t.id=e.id)})});var o=e.sendEncodingParameters||[{ssrc:1001*(2*t+1)}];r&&15019<=j&&"video"===n&&!o[0].rtx&&(o[0].rtx={ssrc:o[0].ssrc+1}),e.wantReceive&&(e.rtpReceiver=new I.RTCRtpReceiver(e.dtlsTransport,n)),e.localCapabilities=a,e.sendEncodingParameters=o}),"max-compat"!==s._config.bundlePolicy&&(n+="a=group:BUNDLE "+s.transceivers.map(function(e){return e.mid}).join(" ")+"\r\n"),n+="a=ice-options:trickle\r\n",s.transceivers.forEach(function(e,t){n+=c(e,e.localCapabilities,"offer",e.stream,s._dtlsRole),n+="a=rtcp-rsize\r\n",!e.iceGatherer||"new"===s.iceGatheringState||0!==t&&s.usingBundle||(e.iceGatherer.getLocalCandidates().forEach(function(e){e.component=1,n+="a="+G.writeCandidate(e)+"\r\n"}),"completed"===e.iceGatherer.state&&(n+="a=end-of-candidates\r\n"))});var i=new I.RTCSessionDescription({type:"offer",sdp:n});return Promise.resolve(i)},n.prototype.createAnswer=function(){var i=this;if(i._isClosed)return Promise.reject(m("InvalidStateError","Can not call createAnswer after close"));if("have-remote-offer"!==i.signalingState&&"have-local-pranswer"!==i.signalingState)return Promise.reject(m("InvalidStateError","Can not call createAnswer in signalingState "+i.signalingState));var a=G.writeSessionBoilerplate(i._sdpSessionId,i._sdpSessionVersion++);i.usingBundle&&(a+="a=group:BUNDLE "+i.transceivers.map(function(e){return e.mid}).join(" ")+"\r\n"),a+="a=ice-options:trickle\r\n";var o=G.getMediaSections(i._remoteDescription.sdp).length;i.transceivers.forEach(function(e,t){if(!(o<t+1)){if(e.rejected)return"application"===e.kind?"DTLS/SCTP"===e.protocol?a+="m=application 0 DTLS/SCTP 5000\r\n":a+="m=application 0 "+e.protocol+" webrtc-datachannel\r\n":"audio"===e.kind?a+="m=audio 0 UDP/TLS/RTP/SAVPF 0\r\na=rtpmap:0 PCMU/8000\r\n":"video"===e.kind&&(a+="m=video 0 UDP/TLS/RTP/SAVPF 120\r\na=rtpmap:120 VP8/90000\r\n"),void(a+="c=IN IP4 0.0.0.0\r\na=inactive\r\na=mid:"+e.mid+"\r\n");var r;e.stream&&("audio"===e.kind?r=e.stream.getAudioTracks()[0]:"video"===e.kind&&(r=e.stream.getVideoTracks()[0]),r&&15019<=j&&"video"===e.kind&&!e.sendEncodingParameters[0].rtx&&(e.sendEncodingParameters[0].rtx={ssrc:e.sendEncodingParameters[0].ssrc+1}));var n=A(e.localCapabilities,e.remoteCapabilities);!n.codecs.filter(function(e){return"rtx"===e.name.toLowerCase()}).length&&e.sendEncodingParameters[0].rtx&&delete e.sendEncodingParameters[0].rtx,a+=c(e,n,"answer",e.stream,i._dtlsRole),e.rtcpParameters&&e.rtcpParameters.reducedSize&&(a+="a=rtcp-rsize\r\n")}});var e=new I.RTCSessionDescription({type:"answer",sdp:a});return Promise.resolve(e)},n.prototype.addIceCandidate=function(c){var d,p=this;return c&&void 0===c.sdpMLineIndex&&!c.sdpMid?Promise.reject(new TypeError("sdpMLineIndex or sdpMid required")):new Promise(function(e,t){if(!p._remoteDescription)return t(m("InvalidStateError","Can not add ICE candidate without a remote description"));if(c&&""!==c.candidate){var r=c.sdpMLineIndex;if(c.sdpMid)for(var n=0;n<p.transceivers.length;n++)if(p.transceivers[n].mid===c.sdpMid){r=n;break}var i=p.transceivers[r];if(!i)return t(m("OperationError","Can not add ICE candidate"));if(i.rejected)return e();var a=0<Object.keys(c.candidate).length?G.parseCandidate(c.candidate):{};if("tcp"===a.protocol&&(0===a.port||9===a.port))return e();if(a.component&&1!==a.component)return e();if((0===r||0<r&&i.iceTransport!==p.transceivers[0].iceTransport)&&!N(i.iceTransport,a))return t(m("OperationError","Can not add ICE candidate"));var o=c.candidate.trim();0===o.indexOf("a=")&&(o=o.substr(2)),(d=G.getMediaSections(p._remoteDescription.sdp))[r]+="a="+(a.type?o:"end-of-candidates")+"\r\n",p._remoteDescription.sdp=G.getDescription(p._remoteDescription.sdp)+d.join("")}else for(var s=0;s<p.transceivers.length&&(p.transceivers[s].rejected||(p.transceivers[s].iceTransport.addRemoteCandidate({}),(d=G.getMediaSections(p._remoteDescription.sdp))[s]+="a=end-of-candidates\r\n",p._remoteDescription.sdp=G.getDescription(p._remoteDescription.sdp)+d.join(""),!p.usingBundle));s++);e()})},n.prototype.getStats=function(t){if(t&&t instanceof I.MediaStreamTrack){var r=null;if(this.transceivers.forEach(function(e){e.rtpSender&&e.rtpSender.track===t?r=e.rtpSender:e.rtpReceiver&&e.rtpReceiver.track===t&&(r=e.rtpReceiver)}),!r)throw m("InvalidAccessError","Invalid selector.");return r.getStats()}var n=[];return this.transceivers.forEach(function(t){["rtpSender","rtpReceiver","iceGatherer","iceTransport","dtlsTransport"].forEach(function(e){t[e]&&n.push(t[e].getStats())})}),Promise.all(n).then(function(e){var t=new Map;return e.forEach(function(e){e.forEach(function(e){t.set(e.id,e)})}),t})};["RTCRtpSender","RTCRtpReceiver","RTCIceGatherer","RTCIceTransport","RTCDtlsTransport"].forEach(function(e){var t,r=I[e];r&&r.prototype&&r.prototype.getStats&&(t=r.prototype.getStats,r.prototype.getStats=function(){return t.apply(this).then(function(r){var n=new Map;return Object.keys(r).forEach(function(e){var t;r[e].type={inboundrtp:"inbound-rtp",outboundrtp:"outbound-rtp",candidatepair:"candidate-pair",localcandidate:"local-candidate",remotecandidate:"remote-candidate"}[(t=r[e]).type]||t.type,n.set(e,r[e])}),n})})});var e=["createOffer","createAnswer"];return e.forEach(function(e){var r=n.prototype[e];n.prototype[e]=function(){var t=arguments;return"function"==typeof t[0]||"function"==typeof t[1]?r.apply(this,[arguments[2]]).then(function(e){"function"==typeof t[0]&&t[0].apply(null,[e])},function(e){"function"==typeof t[1]&&t[1].apply(null,[e])}):r.apply(this,arguments)}}),(e=["setLocalDescription","setRemoteDescription","addIceCandidate"]).forEach(function(e){var r=n.prototype[e];n.prototype[e]=function(){var t=arguments;return"function"==typeof t[1]||"function"==typeof t[2]?r.apply(this,arguments).then(function(){"function"==typeof t[1]&&t[1].apply(null)},function(e){"function"==typeof t[2]&&t[2].apply(null,[e])}):r.apply(this,arguments)}}),["getStats"].forEach(function(e){var t=n.prototype[e];n.prototype[e]=function(){var e=arguments;return"function"==typeof e[1]?t.apply(this,arguments).then(function(){"function"==typeof e[1]&&e[1].apply(null)}):t.apply(this,arguments)}}),n}},{sdp:17}],17:[function(e,t,r){"use strict";var p={generateIdentifier:function(){return Math.random().toString(36).substr(2,10)}};p.localCName=p.generateIdentifier(),p.splitLines=function(e){return e.trim().split("\n").map(function(e){return e.trim()})},p.splitSections=function(e){return e.split("\nm=").map(function(e,t){return(0<t?"m="+e:e).trim()+"\r\n"})},p.getDescription=function(e){var t=p.splitSections(e);return t&&t[0]},p.getMediaSections=function(e){var t=p.splitSections(e);return t.shift(),t},p.matchPrefix=function(e,t){return p.splitLines(e).filter(function(e){return 0===e.indexOf(t)})},p.parseCandidate=function(e){for(var t=0===e.indexOf("a=candidate:")?e.substring(12).split(" "):e.substring(10).split(" "),r={foundation:t[0],component:parseInt(t[1],10),protocol:t[2].toLowerCase(),priority:parseInt(t[3],10),ip:t[4],address:t[4],port:parseInt(t[5],10),type:t[7]},n=8;n<t.length;n+=2)switch(t[n]){case"raddr":r.relatedAddress=t[n+1];break;case"rport":r.relatedPort=parseInt(t[n+1],10);break;case"tcptype":r.tcpType=t[n+1];break;case"ufrag":r.ufrag=t[n+1],r.usernameFragment=t[n+1];break;default:r[t[n]]=t[n+1]}return r},p.writeCandidate=function(e){var t=[];t.push(e.foundation),t.push(e.component),t.push(e.protocol.toUpperCase()),t.push(e.priority),t.push(e.address||e.ip),t.push(e.port);var r=e.type;return t.push("typ"),t.push(r),"host"!==r&&e.relatedAddress&&e.relatedPort&&(t.push("raddr"),t.push(e.relatedAddress),t.push("rport"),t.push(e.relatedPort)),e.tcpType&&"tcp"===e.protocol.toLowerCase()&&(t.push("tcptype"),t.push(e.tcpType)),(e.usernameFragment||e.ufrag)&&(t.push("ufrag"),t.push(e.usernameFragment||e.ufrag)),"candidate:"+t.join(" ")},p.parseIceOptions=function(e){return e.substr(14).split(" ")},p.parseRtpMap=function(e){var t=e.substr(9).split(" "),r={payloadType:parseInt(t.shift(),10)},t=t[0].split("/");return r.name=t[0],r.clockRate=parseInt(t[1],10),r.channels=3===t.length?parseInt(t[2],10):1,r.numChannels=r.channels,r},p.writeRtpMap=function(e){var t=e.payloadType;void 0!==e.preferredPayloadType&&(t=e.preferredPayloadType);var r=e.channels||e.numChannels||1;return"a=rtpmap:"+t+" "+e.name+"/"+e.clockRate+(1!==r?"/"+r:"")+"\r\n"},p.parseExtmap=function(e){var t=e.substr(9).split(" ");return{id:parseInt(t[0],10),direction:0<t[0].indexOf("/")?t[0].split("/")[1]:"sendrecv",uri:t[1]}},p.writeExtmap=function(e){return"a=extmap:"+(e.id||e.preferredId)+(e.direction&&"sendrecv"!==e.direction?"/"+e.direction:"")+" "+e.uri+"\r\n"},p.parseFmtp=function(e){for(var t,r={},n=e.substr(e.indexOf(" ")+1).split(";"),i=0;i<n.length;i++)r[(t=n[i].trim().split("="))[0].trim()]=t[1];return r},p.writeFmtp=function(t){var r,e="",n=t.payloadType;return void 0!==t.preferredPayloadType&&(n=t.preferredPayloadType),t.parameters&&Object.keys(t.parameters).length&&(r=[],Object.keys(t.parameters).forEach(function(e){t.parameters[e]?r.push(e+"="+t.parameters[e]):r.push(e)}),e+="a=fmtp:"+n+" "+r.join(";")+"\r\n"),e},p.parseRtcpFb=function(e){var t=e.substr(e.indexOf(" ")+1).split(" ");return{type:t.shift(),parameter:t.join(" ")}},p.writeRtcpFb=function(e){var t="",r=e.payloadType;return void 0!==e.preferredPayloadType&&(r=e.preferredPayloadType),e.rtcpFeedback&&e.rtcpFeedback.length&&e.rtcpFeedback.forEach(function(e){t+="a=rtcp-fb:"+r+" "+e.type+(e.parameter&&e.parameter.length?" "+e.parameter:"")+"\r\n"}),t},p.parseSsrcMedia=function(e){var t=e.indexOf(" "),r={ssrc:parseInt(e.substr(7,t-7),10)},n=e.indexOf(":",t);return-1<n?(r.attribute=e.substr(t+1,n-t-1),r.value=e.substr(n+1)):r.attribute=e.substr(t+1),r},p.parseSsrcGroup=function(e){var t=e.substr(13).split(" ");return{semantics:t.shift(),ssrcs:t.map(function(e){return parseInt(e,10)})}},p.getMid=function(e){var t=p.matchPrefix(e,"a=mid:")[0];if(t)return t.substr(6)},p.parseFingerprint=function(e){var t=e.substr(14).split(" ");return{algorithm:t[0].toLowerCase(),value:t[1]}},p.getDtlsParameters=function(e,t){return{role:"auto",fingerprints:p.matchPrefix(e+t,"a=fingerprint:").map(p.parseFingerprint)}},p.writeDtlsParameters=function(e,t){var r="a=setup:"+t+"\r\n";return e.fingerprints.forEach(function(e){r+="a=fingerprint:"+e.algorithm+" "+e.value+"\r\n"}),r},p.parseCryptoLine=function(e){var t=e.substr(9).split(" ");return{tag:parseInt(t[0],10),cryptoSuite:t[1],keyParams:t[2],sessionParams:t.slice(3)}},p.writeCryptoLine=function(e){return"a=crypto:"+e.tag+" "+e.cryptoSuite+" "+("object"==typeof e.keyParams?p.writeCryptoKeyParams(e.keyParams):e.keyParams)+(e.sessionParams?" "+e.sessionParams.join(" "):"")+"\r\n"},p.parseCryptoKeyParams=function(e){if(0!==e.indexOf("inline:"))return null;var t=e.substr(7).split("|");return{keyMethod:"inline",keySalt:t[0],lifeTime:t[1],mkiValue:t[2]?t[2].split(":")[0]:void 0,mkiLength:t[2]?t[2].split(":")[1]:void 0}},p.writeCryptoKeyParams=function(e){return e.keyMethod+":"+e.keySalt+(e.lifeTime?"|"+e.lifeTime:"")+(e.mkiValue&&e.mkiLength?"|"+e.mkiValue+":"+e.mkiLength:"")},p.getCryptoParameters=function(e,t){return p.matchPrefix(e+t,"a=crypto:").map(p.parseCryptoLine)},p.getIceParameters=function(e,t){var r=p.matchPrefix(e+t,"a=ice-ufrag:")[0],n=p.matchPrefix(e+t,"a=ice-pwd:")[0];return r&&n?{usernameFragment:r.substr(12),password:n.substr(10)}:null},p.writeIceParameters=function(e){return"a=ice-ufrag:"+e.usernameFragment+"\r\na=ice-pwd:"+e.password+"\r\n"},p.parseRtpParameters=function(e){for(var t={codecs:[],headerExtensions:[],fecMechanisms:[],rtcp:[]},r=p.splitLines(e)[0].split(" "),n=3;n<r.length;n++){var i=r[n],a=p.matchPrefix(e,"a=rtpmap:"+i+" ")[0];if(a){var o=p.parseRtpMap(a),s=p.matchPrefix(e,"a=fmtp:"+i+" ");switch(o.parameters=s.length?p.parseFmtp(s[0]):{},o.rtcpFeedback=p.matchPrefix(e,"a=rtcp-fb:"+i+" ").map(p.parseRtcpFb),t.codecs.push(o),o.name.toUpperCase()){case"RED":case"ULPFEC":t.fecMechanisms.push(o.name.toUpperCase())}}}return p.matchPrefix(e,"a=extmap:").forEach(function(e){t.headerExtensions.push(p.parseExtmap(e))}),t},p.writeRtpDescription=function(e,t){var r="";r+="m="+e+" ",r+=0<t.codecs.length?"9":"0",r+=" UDP/TLS/RTP/SAVPF ",r+=t.codecs.map(function(e){return void 0!==e.preferredPayloadType?e.preferredPayloadType:e.payloadType}).join(" ")+"\r\n",r+="c=IN IP4 0.0.0.0\r\n",r+="a=rtcp:9 IN IP4 0.0.0.0\r\n",t.codecs.forEach(function(e){r+=p.writeRtpMap(e),r+=p.writeFmtp(e),r+=p.writeRtcpFb(e)});var n=0;return t.codecs.forEach(function(e){e.maxptime>n&&(n=e.maxptime)}),0<n&&(r+="a=maxptime:"+n+"\r\n"),r+="a=rtcp-mux\r\n",t.headerExtensions&&t.headerExtensions.forEach(function(e){r+=p.writeExtmap(e)}),r},p.parseRtpEncodingParameters=function(e){var r,n=[],t=p.parseRtpParameters(e),i=-1!==t.fecMechanisms.indexOf("RED"),a=-1!==t.fecMechanisms.indexOf("ULPFEC"),o=p.matchPrefix(e,"a=ssrc:").map(function(e){return p.parseSsrcMedia(e)}).filter(function(e){return"cname"===e.attribute}),s=0<o.length&&o[0].ssrc,c=p.matchPrefix(e,"a=ssrc-group:FID").map(function(e){return e.substr(17).split(" ").map(function(e){return parseInt(e,10)})});0<c.length&&1<c[0].length&&c[0][0]===s&&(r=c[0][1]),t.codecs.forEach(function(e){var t;"RTX"===e.name.toUpperCase()&&e.parameters.apt&&(t={ssrc:s,codecPayloadType:parseInt(e.parameters.apt,10)},s&&r&&(t.rtx={ssrc:r}),n.push(t),i&&((t=JSON.parse(JSON.stringify(t))).fec={ssrc:s,mechanism:a?"red+ulpfec":"red"},n.push(t)))}),0===n.length&&s&&n.push({ssrc:s});var d=p.matchPrefix(e,"b=");return d.length&&(d=0===d[0].indexOf("b=TIAS:")?parseInt(d[0].substr(7),10):0===d[0].indexOf("b=AS:")?1e3*parseInt(d[0].substr(5),10)*.95-16e3:void 0,n.forEach(function(e){e.maxBitrate=d})),n},p.parseRtcpParameters=function(e){var t={},r=p.matchPrefix(e,"a=ssrc:").map(function(e){return p.parseSsrcMedia(e)}).filter(function(e){return"cname"===e.attribute})[0];r&&(t.cname=r.value,t.ssrc=r.ssrc);var n=p.matchPrefix(e,"a=rtcp-rsize");t.reducedSize=0<n.length,t.compound=0===n.length;var i=p.matchPrefix(e,"a=rtcp-mux");return t.mux=0<i.length,t},p.parseMsid=function(e){var t,r=p.matchPrefix(e,"a=msid:");if(1===r.length)return{stream:(t=r[0].substr(7).split(" "))[0],track:t[1]};var n=p.matchPrefix(e,"a=ssrc:").map(function(e){return p.parseSsrcMedia(e)}).filter(function(e){return"msid"===e.attribute});return 0<n.length?{stream:(t=n[0].value.split(" "))[0],track:t[1]}:void 0},p.parseSctpDescription=function(e){var t,r=p.parseMLine(e),n=p.matchPrefix(e,"a=max-message-size:");0<n.length&&(t=parseInt(n[0].substr(19),10)),isNaN(t)&&(t=65536);var i=p.matchPrefix(e,"a=sctp-port:");if(0<i.length)return{port:parseInt(i[0].substr(12),10),protocol:r.fmt,maxMessageSize:t};if(0<p.matchPrefix(e,"a=sctpmap:").length){var a=p.matchPrefix(e,"a=sctpmap:")[0].substr(10).split(" ");return{port:parseInt(a[0],10),protocol:a[1],maxMessageSize:t}}},p.writeSctpDescription=function(e,t){var r=[],r="DTLS/SCTP"!==e.protocol?["m="+e.kind+" 9 "+e.protocol+" "+t.protocol+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctp-port:"+t.port+"\r\n"]:["m="+e.kind+" 9 "+e.protocol+" "+t.port+"\r\n","c=IN IP4 0.0.0.0\r\n","a=sctpmap:"+t.port+" "+t.protocol+" 65535\r\n"];return void 0!==t.maxMessageSize&&r.push("a=max-message-size:"+t.maxMessageSize+"\r\n"),r.join("")},p.generateSessionId=function(){return Math.random().toString().substr(2,21)},p.writeSessionBoilerplate=function(e,t,r){var n=void 0!==t?t:2,i=e||p.generateSessionId();return"v=0\r\no="+(r||"thisisadapterortc")+" "+i+" "+n+" IN IP4 127.0.0.1\r\ns=-\r\nt=0 0\r\n"},p.writeMediaSection=function(e,t,r,n){var i,a=p.writeRtpDescription(e.kind,t);return a+=p.writeIceParameters(e.iceGatherer.getLocalParameters()),a+=p.writeDtlsParameters(e.dtlsTransport.getLocalParameters(),"offer"===r?"actpass":"active"),a+="a=mid:"+e.mid+"\r\n",e.direction?a+="a="+e.direction+"\r\n":e.rtpSender&&e.rtpReceiver?a+="a=sendrecv\r\n":e.rtpSender?a+="a=sendonly\r\n":e.rtpReceiver?a+="a=recvonly\r\n":a+="a=inactive\r\n",e.rtpSender&&(a+="a="+(i="msid:"+n.id+" "+e.rtpSender.track.id+"\r\n"),a+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" "+i,e.sendEncodingParameters[0].rtx&&(a+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" "+i,a+="a=ssrc-group:FID "+e.sendEncodingParameters[0].ssrc+" "+e.sendEncodingParameters[0].rtx.ssrc+"\r\n")),a+="a=ssrc:"+e.sendEncodingParameters[0].ssrc+" cname:"+p.localCName+"\r\n",e.rtpSender&&e.sendEncodingParameters[0].rtx&&(a+="a=ssrc:"+e.sendEncodingParameters[0].rtx.ssrc+" cname:"+p.localCName+"\r\n"),a},p.getDirection=function(e,t){for(var r=p.splitLines(e),n=0;n<r.length;n++)switch(r[n]){case"a=sendrecv":case"a=sendonly":case"a=recvonly":case"a=inactive":return r[n].substr(2)}return t?p.getDirection(t):"sendrecv"},p.getKind=function(e){return p.splitLines(e)[0].split(" ")[0].substr(2)},p.isRejected=function(e){return"0"===e.split(" ",2)[1]},p.parseMLine=function(e){var t=p.splitLines(e)[0].substr(2).split(" ");return{kind:t[0],port:parseInt(t[1],10),protocol:t[2],fmt:t.slice(3).join(" ")}},p.parseOLine=function(e){var t=p.matchPrefix(e,"o=")[0].substr(2).split(" ");return{username:t[0],sessionId:t[1],sessionVersion:parseInt(t[2],10),netType:t[3],addressType:t[4],address:t[5]}},p.isValidSDP=function(e){if("string"!=typeof e||0===e.length)return!1;for(var t=p.splitLines(e),r=0;r<t.length;r++)if(t[r].length<2||"="!==t[r].charAt(1))return!1;return!0},"object"==typeof t&&(t.exports=p)},{}]},{},[1])(1)});