diff --git a/dist/naf-janus-adapter.js b/dist/naf-janus-adapter.js index a8fd73e..ce0555e 100644 --- a/dist/naf-janus-adapter.js +++ b/dist/naf-janus-adapter.js @@ -371,6 +371,7 @@ class JanusAdapter { this.reconnectionTimeout = null; this.maxReconnectionAttempts = 10; this.reconnectionAttempts = 0; + this.isReconnecting = false; this.publisher = null; this.occupantIds = []; this.occupants = {}; @@ -434,12 +435,25 @@ class JanusAdapter { this.loops = loops; } connect() { + if (this.serverUrl === '/') { + this.serverUrl = '/janus'; + } + if (this.serverUrl === '/janus') { + if (location.protocol === 'https:') { + this.serverUrl = 'wss://' + location.host + '/janus'; + } else { + this.serverUrl = 'ws://' + location.host + '/janus'; + } + } debug(`connecting to ${this.serverUrl}`); const websocketConnection = new Promise((resolve, reject) => { this.ws = new WebSocket(this.serverUrl, "janus-protocol"); this.session = new mj.JanusSession(this.ws.send.bind(this.ws), { timeoutMs: 40000 }); + this.websocketConnectionPromise = {}; + this.websocketConnectionPromise.resolve = resolve; + this.websocketConnectionPromise.reject = reject; this.ws.addEventListener("close", this.onWebsocketClose); this.ws.addEventListener("message", this.onWebsocketMessage); this.wsOnOpen = () => { @@ -505,11 +519,15 @@ class JanusAdapter { if (event.code === WS_NORMAL_CLOSURE) { return; } - console.warn("Janus websocket closed unexpectedly."); - if (this.onReconnecting) { - this.onReconnecting(this.reconnectionDelay); + this.websocketConnectionPromise.reject(event); + if (!this.isReconnecting) { + this.isReconnecting = true; + console.warn("Janus websocket closed unexpectedly."); + if (this.onReconnecting) { + this.onReconnecting(this.reconnectionDelay); + } + this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay); } - this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay); } reconnect() { // Dispose of all networked entities and other resources tied to the session. @@ -517,14 +535,21 @@ class JanusAdapter { this.connect().then(() => { this.reconnectionDelay = this.initialReconnectionDelay; this.reconnectionAttempts = 0; + this.isReconnecting = false; if (this.onReconnected) { this.onReconnected(); } }).catch(error => { this.reconnectionDelay += 1000; this.reconnectionAttempts++; - if (this.reconnectionAttempts > this.maxReconnectionAttempts && this.onReconnectionError) { - return this.onReconnectionError(new Error("Connection could not be reestablished, exceeded maximum number of reconnection attempts.")); + if (this.reconnectionAttempts > this.maxReconnectionAttempts) { + const error = new Error("Connection could not be reestablished, exceeded maximum number of reconnection attempts."); + if (this.onReconnectionError) { + return this.onReconnectionError(error); + } else { + console.warn(error); + return; + } } console.warn("Error during reconnect, retrying."); console.warn(error); @@ -1464,14 +1489,17 @@ function useColors() { return false; } + let m; + // Is webkit? http://stackoverflow.com/a/16459606/376773 // document is undefined in react-native: https://github.com/facebook/react-native/pull/1632 + // eslint-disable-next-line no-return-assign return (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) || // Is firebug? http://stackoverflow.com/a/398120/376773 (typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) || // Is firefox >= v31? // https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages - (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/) && parseInt(RegExp.$1, 10) >= 31) || + (typeof navigator !== 'undefined' && navigator.userAgent && (m = navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/)) && parseInt(m[1], 10) >= 31) || // Double check webkit in userAgent just in case we are in a worker (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/)); } @@ -1784,24 +1812,62 @@ function setup(env) { createDebug.names = []; createDebug.skips = []; - let i; - const split = (typeof namespaces === 'string' ? namespaces : '').split(/[\s,]+/); - const len = split.length; + const split = (typeof namespaces === 'string' ? namespaces : '') + .trim() + .replace(' ', ',') + .split(',') + .filter(Boolean); - for (i = 0; i < len; i++) { - if (!split[i]) { - // ignore empty strings - continue; + for (const ns of split) { + if (ns[0] === '-') { + createDebug.skips.push(ns.slice(1)); + } else { + createDebug.names.push(ns); } + } + } - namespaces = split[i].replace(/\*/g, '.*?'); - - if (namespaces[0] === '-') { - createDebug.skips.push(new RegExp('^' + namespaces.slice(1) + '$')); + /** + * Checks if the given string matches a namespace template, honoring + * asterisks as wildcards. + * + * @param {String} search + * @param {String} template + * @return {Boolean} + */ + function matchesTemplate(search, template) { + let searchIndex = 0; + let templateIndex = 0; + let starIndex = -1; + let matchIndex = 0; + + while (searchIndex < search.length) { + if (templateIndex < template.length && (template[templateIndex] === search[searchIndex] || template[templateIndex] === '*')) { + // Match character or proceed with wildcard + if (template[templateIndex] === '*') { + starIndex = templateIndex; + matchIndex = searchIndex; + templateIndex++; // Skip the '*' + } else { + searchIndex++; + templateIndex++; + } + } else if (starIndex !== -1) { // eslint-disable-line no-negated-condition + // Backtrack to the last '*' and try to match more characters + templateIndex = starIndex + 1; + matchIndex++; + searchIndex = matchIndex; } else { - createDebug.names.push(new RegExp('^' + namespaces + '$')); + return false; // No match } } + + // Handle trailing '*' in template + while (templateIndex < template.length && template[templateIndex] === '*') { + templateIndex++; + } + + return templateIndex === template.length; } /** @@ -1812,8 +1878,8 @@ function setup(env) { */ function disable() { const namespaces = [ - ...createDebug.names.map(toNamespace), - ...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace) + ...createDebug.names, + ...createDebug.skips.map(namespace => '-' + namespace) ].join(','); createDebug.enable(''); return namespaces; @@ -1827,21 +1893,14 @@ function setup(env) { * @api public */ function enabled(name) { - if (name[name.length - 1] === '*') { - return true; - } - - let i; - let len; - - for (i = 0, len = createDebug.skips.length; i < len; i++) { - if (createDebug.skips[i].test(name)) { + for (const skip of createDebug.skips) { + if (matchesTemplate(name, skip)) { return false; } } - for (i = 0, len = createDebug.names.length; i < len; i++) { - if (createDebug.names[i].test(name)) { + for (const ns of createDebug.names) { + if (matchesTemplate(name, ns)) { return true; } } @@ -1849,19 +1908,6 @@ function setup(env) { return false; } - /** - * Convert regexp to namespace - * - * @param {RegExp} regxep - * @return {String} namespace - * @api private - */ - function toNamespace(regexp) { - return regexp.toString() - .substring(2, regexp.toString().length - 2) - .replace(/\.\*\?$/, '*'); - } - /** * Coerce `val`. * @@ -1925,7 +1971,7 @@ var y = d * 365.25; * @api public */ -module.exports = function(val, options) { +module.exports = function (val, options) { options = options || {}; var type = typeof val; if (type === 'string' && val.length > 0) { @@ -2914,4 +2960,4 @@ if (true) { /******/ /******/ })() ; -//# 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Each WebRTC connection to the Janus server will be\n * associated with a single handle. Once attached to the server, this handle will be given a unique ID which should be\n * used to associate it with future signalling messages.\n *\n * See https://janus.conf.meetecho.com/docs/rest.html#handles.\n **/\nfunction JanusPluginHandle(session) {\n  this.session = session;\n  this.id = undefined;\n}\n\n/** Attaches this handle to the Janus server and sets its ID. **/\nJanusPluginHandle.prototype.attach = function(plugin, loop_index) {\n  var payload = { plugin: plugin, loop_index: loop_index, \"force-bundle\": true, \"force-rtcp-mux\": true };\n  return this.session.send(\"attach\", payload).then(resp => {\n    this.id = resp.data.id;\n    return resp;\n  });\n};\n\n/** Detaches this handle. **/\nJanusPluginHandle.prototype.detach = function() {\n  return this.send(\"detach\");\n};\n\n/** Registers a callback to be fired upon the reception of any incoming Janus signals for this plugin handle with the\n * `janus` attribute equal to `ev`.\n **/\nJanusPluginHandle.prototype.on = function(ev, callback) {\n  return this.session.on(ev, signal => {\n    if (signal.sender == this.id) {\n      callback(signal);\n    }\n  });\n};\n\n/**\n * Sends a signal associated with this handle. 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Once\n * created, this session will be given a unique ID which should be used to associate it with future signalling messages.\n *\n * See https://janus.conf.meetecho.com/docs/rest.html#sessions.\n **/\nfunction JanusSession(output, options) {\n  this.output = output;\n  this.id = undefined;\n  this.nextTxId = 0;\n  this.txns = {};\n  this.eventHandlers = {};\n  this.options = Object.assign({\n    verbose: false,\n    timeoutMs: 10000,\n    keepaliveMs: 30000\n  }, options);\n}\n\n/** Creates this session on the Janus server and sets its ID. **/\nJanusSession.prototype.create = function() {\n  return this.send(\"create\").then(resp => {\n    this.id = resp.data.id;\n    return resp;\n  });\n};\n\n/**\n * Destroys this session. Note that upon destruction, Janus will also close the signalling transport (if applicable) and\n * any open WebRTC connections.\n **/\nJanusSession.prototype.destroy = function() {\n  return this.send(\"destroy\").then((resp) => {\n    this.dispose();\n    return resp;\n  });\n};\n\n/**\n * Disposes of this session in a way such that no further incoming signalling messages will be processed.\n * Outstanding transactions will be rejected.\n **/\nJanusSession.prototype.dispose = function() {\n  this._killKeepalive();\n  this.eventHandlers = {};\n  for (var txId in this.txns) {\n    if (this.txns.hasOwnProperty(txId)) {\n      var txn = this.txns[txId];\n      clearTimeout(txn.timeout);\n      txn.reject(new Error(\"Janus session was disposed.\"));\n      delete this.txns[txId];\n    }\n  }\n};\n\n/**\n * Whether this signal represents an error, and the associated promise (if any) should be rejected.\n * Users should override this to handle any custom plugin-specific error conventions.\n **/\nJanusSession.prototype.isError = function(signal) {\n  return signal.janus === \"error\";\n};\n\n/** Registers a callback to be fired upon the reception of any incoming Janus signals for this session with the\n * `janus` attribute equal to `ev`.\n **/\nJanusSession.prototype.on = function(ev, callback) {\n  var handlers = this.eventHandlers[ev];\n  if (handlers == null) {\n    handlers = this.eventHandlers[ev] = [];\n  }\n  handlers.push(callback);\n};\n\n/**\n * Callback for receiving JSON signalling messages pertinent to this session. If the signals are responses to previously\n * sent signals, the promises for the outgoing signals will be resolved or rejected appropriately with this signal as an\n * argument.\n *\n * External callers should call this function every time a new signal arrives on the transport; for example, in a\n * WebSocket's `message` event, or when a new datum shows up in an HTTP long-polling response.\n **/\nJanusSession.prototype.receive = function(signal) {\n  if (this.options.verbose) {\n    this._logIncoming(signal);\n  }\n  if (signal.session_id != this.id) {\n    console.warn(\"Incorrect session ID received in Janus signalling message: was \" + signal.session_id + \", expected \" + this.id + \".\");\n  }\n\n  var responseType = signal.janus;\n  var handlers = this.eventHandlers[responseType];\n  if (handlers != null) {\n    for (var i = 0; i < handlers.length; i++) {\n      handlers[i](signal);\n    }\n  }\n\n  if (signal.transaction != null) {\n    var txn = this.txns[signal.transaction];\n    if (txn == null) {\n      // this is a response to a transaction that wasn't caused via JanusSession.send, or a plugin replied twice to a\n      // single request, or the session was disposed, or something else that isn't under our purview; that's fine\n      return;\n    }\n\n    if (responseType === \"ack\" && txn.type == \"message\") {\n      // this is an ack of an asynchronously-processed plugin request, we should wait to resolve the promise until the\n      // actual response comes in\n      return;\n    }\n\n    clearTimeout(txn.timeout);\n\n    delete this.txns[signal.transaction];\n    (this.isError(signal) ? txn.reject : txn.resolve)(signal);\n  }\n};\n\n/**\n * Sends a signal associated with this session, beginning a new transaction. Returns a promise that will be resolved or\n * rejected when a response is received in the same transaction, or when no response is received within the session\n * timeout.\n **/\nJanusSession.prototype.send = function(type, signal) {\n  signal = Object.assign({ transaction: (this.nextTxId++).toString() }, signal);\n  return new Promise((resolve, reject) => {\n    var timeout = null;\n    if (this.options.timeoutMs) {\n      timeout = setTimeout(() => {\n        delete this.txns[signal.transaction];\n        reject(new Error(\"Signalling transaction with txid \" + signal.transaction + \" timed out.\"));\n      }, this.options.timeoutMs);\n    }\n    this.txns[signal.transaction] = { resolve: resolve, reject: reject, timeout: timeout, type: type };\n    this._transmit(type, signal);\n  });\n};\n\nJanusSession.prototype._transmit = function(type, signal) {\n  signal = Object.assign({ janus: type }, signal);\n\n  if (this.id != null) { // this.id is undefined in the special case when we're sending the session create message\n    signal = Object.assign({ session_id: this.id }, signal);\n  }\n\n  if (this.options.verbose) {\n    this._logOutgoing(signal);\n  }\n\n  this.output(JSON.stringify(signal));\n  this._resetKeepalive();\n};\n\nJanusSession.prototype._logOutgoing = function(signal) {\n  var kind = signal.janus;\n  if (kind === \"message\" && signal.jsep) {\n    kind = signal.jsep.type;\n  }\n  var message = \"> Outgoing Janus \" + (kind || \"signal\") + \" (#\" + signal.transaction + \"): \";\n  console.debug(\"%c\" + message, \"color: #040\", signal);\n};\n\nJanusSession.prototype._logIncoming = function(signal) {\n  var kind = signal.janus;\n  var message = signal.transaction ?\n      \"< Incoming Janus \" + (kind || \"signal\") + \" (#\" + signal.transaction + \"): \" :\n      \"< Incoming Janus \" + (kind || \"signal\") + \": \";\n  console.debug(\"%c\" + message, \"color: #004\", signal);\n};\n\nJanusSession.prototype._sendKeepalive = function() {\n  return this.send(\"keepalive\");\n};\n\nJanusSession.prototype._killKeepalive = function() {\n  clearTimeout(this.keepaliveTimeout);\n};\n\nJanusSession.prototype._resetKeepalive = function() {\n  this._killKeepalive();\n  if (this.options.keepaliveMs) {\n    this.keepaliveTimeout = setTimeout(() => {\n      this._sendKeepalive().catch(e => console.error(\"Error received from keepalive: \", e));\n    }, this.options.keepaliveMs);\n  }\n};\n\nmodule.exports = {\n  JanusPluginHandle,\n  JanusSession\n};\n","/* global NAF */\nvar mj = require(\"@networked-aframe/minijanus\");\nmj.JanusSession.prototype.sendOriginal = mj.JanusSession.prototype.send;\nmj.JanusSession.prototype.send = function(type, signal) {\n  return this.sendOriginal(type, signal).catch((e) => {\n    if (e.message && e.message.indexOf(\"timed out\") > -1) {\n      console.error(\"web socket timed out\");\n      NAF.connection.adapter.reconnect();\n    } else {\n      throw(e);\n    }\n  });\n}\n\nvar sdpUtils = require(\"sdp\");\nvar debug = require(\"debug\")(\"naf-janus-adapter:debug\");\nvar warn = require(\"debug\")(\"naf-janus-adapter:warn\");\nvar error = require(\"debug\")(\"naf-janus-adapter:error\");\nvar isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);\n\nconst SUBSCRIBE_TIMEOUT_MS = 15000;\n\nconst AVAILABLE_OCCUPANTS_THRESHOLD = 5;\nconst MAX_SUBSCRIBE_DELAY = 5000;\n\nfunction randomDelay(min, max) {\n  return new Promise(resolve => {\n    const delay = Math.random() * (max - min) + min;\n    setTimeout(resolve, delay);\n  });\n}\n\nfunction debounce(fn) {\n  var curr = Promise.resolve();\n  return function() {\n    var args = Array.prototype.slice.call(arguments);\n    curr = curr.then(_ => fn.apply(this, args));\n  };\n}\n\nfunction randomUint() {\n  return Math.floor(Math.random() * Number.MAX_SAFE_INTEGER);\n}\n\nfunction untilDataChannelOpen(dataChannel) {\n  return new Promise((resolve, reject) => {\n    if (dataChannel.readyState === \"open\") {\n      resolve();\n    } else {\n      let resolver, rejector;\n\n      const clear = () => {\n        dataChannel.removeEventListener(\"open\", resolver);\n        dataChannel.removeEventListener(\"error\", rejector);\n      };\n\n      resolver = () => {\n        clear();\n        resolve();\n      };\n      rejector = () => {\n        clear();\n        reject();\n      };\n\n      dataChannel.addEventListener(\"open\", resolver);\n      dataChannel.addEventListener(\"error\", rejector);\n    }\n  });\n}\n\nconst isH264VideoSupported = (() => {\n  const video = document.createElement(\"video\");\n  return video.canPlayType('video/mp4; codecs=\"avc1.42E01E, mp4a.40.2\"') !== \"\";\n})();\n\nconst OPUS_PARAMETERS = {\n  // indicates that we want to enable DTX to elide silence packets\n  usedtx: 1,\n  // indicates that we prefer to receive mono audio (important for voip profile)\n  stereo: 0,\n  // indicates that we prefer to send mono audio (important for voip profile)\n  \"sprop-stereo\": 0\n};\n\nconst DEFAULT_PEER_CONNECTION_CONFIG = {\n  iceServers: [{ urls: \"stun:stun1.l.google.com:19302\" }, { urls: \"stun:stun2.l.google.com:19302\" }]\n};\n\nconst WS_NORMAL_CLOSURE = 1000;\n\nclass JanusAdapter {\n  constructor() {\n    this.room = null;\n    // We expect the consumer to set a client id before connecting.\n    this.clientId = null;\n    this.joinToken = null;\n\n    this.serverUrl = null;\n    this.webRtcOptions = {};\n    this.peerConnectionConfig = null;\n    this.ws = null;\n    this.session = null;\n    this.reliableTransport = \"datachannel\";\n    this.unreliableTransport = \"datachannel\";\n\n    // In the event the server restarts and all clients lose connection, reconnect with\n    // some random jitter added to prevent simultaneous reconnection requests.\n    this.initialReconnectionDelay = 1000 * Math.random();\n    this.reconnectionDelay = this.initialReconnectionDelay;\n    this.reconnectionTimeout = null;\n    this.maxReconnectionAttempts = 10;\n    this.reconnectionAttempts = 0;\n\n    this.publisher = null;\n    this.occupantIds = [];\n    this.occupants = {};\n    this.mediaStreams = {};\n    this.localMediaStream = null;\n    this.pendingMediaRequests = new Map();\n\n    this.pendingOccupants = new Set();\n    this.availableOccupants = [];\n    this.requestedOccupants = null;\n\n    this.blockedClients = new Map();\n    this.frozenUpdates = new Map();\n\n    this.timeOffsets = [];\n    this.serverTimeRequests = 0;\n    this.avgTimeOffset = 0;\n\n    this.onWebsocketOpen = this.onWebsocketOpen.bind(this);\n    this.onWebsocketClose = this.onWebsocketClose.bind(this);\n    this.onWebsocketMessage = this.onWebsocketMessage.bind(this);\n    this.onDataChannelMessage = this.onDataChannelMessage.bind(this);\n    this.onData = this.onData.bind(this);\n  }\n\n  setServerUrl(url) {\n    this.serverUrl = url;\n  }\n\n  setApp(app) {}\n\n  setRoom(roomName) {\n    this.room = roomName;\n  }\n\n  setJoinToken(joinToken) {\n    this.joinToken = joinToken;\n  }\n\n  setClientId(clientId) {\n    this.clientId = clientId;\n  }\n\n  setWebRtcOptions(options) {\n    this.webRtcOptions = options;\n  }\n\n  setPeerConnectionConfig(peerConnectionConfig) {\n    this.peerConnectionConfig = peerConnectionConfig;\n  }\n\n  setServerConnectListeners(successListener, failureListener) {\n    this.connectSuccess = successListener;\n    this.connectFailure = failureListener;\n  }\n\n  setRoomOccupantListener(occupantListener) {\n    this.onOccupantsChanged = occupantListener;\n  }\n\n  setDataChannelListeners(openListener, closedListener, messageListener) {\n    this.onOccupantConnected = openListener;\n    this.onOccupantDisconnected = closedListener;\n    this.onOccupantMessage = messageListener;\n  }\n\n  setReconnectionListeners(reconnectingListener, reconnectedListener, reconnectionErrorListener) {\n    // onReconnecting is called with the number of milliseconds until the next reconnection attempt\n    this.onReconnecting = reconnectingListener;\n    // onReconnected is called when the connection has been reestablished\n    this.onReconnected = reconnectedListener;\n    // onReconnectionError is called with an error when maxReconnectionAttempts has been reached\n    this.onReconnectionError = reconnectionErrorListener;\n  }\n\n  setEventLoops(loops) {\n    this.loops = loops;\n  }\n\n  connect() {\n    debug(`connecting to ${this.serverUrl}`);\n\n    const websocketConnection = new Promise((resolve, reject) => {\n      this.ws = new WebSocket(this.serverUrl, \"janus-protocol\");\n\n      this.session = new mj.JanusSession(this.ws.send.bind(this.ws), { timeoutMs: 40000 });\n\n      this.ws.addEventListener(\"close\", this.onWebsocketClose);\n      this.ws.addEventListener(\"message\", this.onWebsocketMessage);\n\n      this.wsOnOpen = () => {\n        this.ws.removeEventListener(\"open\", this.wsOnOpen);\n        this.onWebsocketOpen()\n          .then(resolve)\n          .catch(reject);\n      };\n\n      this.ws.addEventListener(\"open\", this.wsOnOpen);\n    });\n\n    return Promise.all([websocketConnection, this.updateTimeOffset()]);\n  }\n\n  disconnect() {\n    debug(`disconnecting`);\n\n    clearTimeout(this.reconnectionTimeout);\n\n    this.removeAllOccupants();\n\n    if (this.publisher) {\n      // Close the publisher peer connection. Which also detaches the plugin handle.\n      this.publisher.conn.close();\n      this.publisher = null;\n    }\n\n    if (this.session) {\n      this.session.dispose();\n      this.session = null;\n    }\n\n    if (this.ws) {\n      this.ws.removeEventListener(\"open\", this.wsOnOpen);\n      this.ws.removeEventListener(\"close\", this.onWebsocketClose);\n      this.ws.removeEventListener(\"message\", this.onWebsocketMessage);\n      this.ws.close();\n      this.ws = null;\n    }\n\n    // Now that all RTCPeerConnection closed, be sure to not call\n    // reconnect() again via performDelayedReconnect if previous\n    // RTCPeerConnection was in the failed state.\n    if (this.delayedReconnectTimeout) {\n      clearTimeout(this.delayedReconnectTimeout);\n      this.delayedReconnectTimeout = null;\n    }\n  }\n\n  isDisconnected() {\n    return this.ws === null;\n  }\n\n  async onWebsocketOpen() {\n    // Create the Janus Session\n    await this.session.create();\n\n    // Attach the SFU Plugin and create a RTCPeerConnection for the publisher.\n    // The publisher sends audio and opens two bidirectional data channels.\n    // One reliable datachannel and one unreliable.\n    this.publisher = await this.createPublisher();\n\n    // Call the naf connectSuccess callback before we start receiving WebRTC messages.\n    this.connectSuccess(this.clientId);\n\n    for (let i = 0; i < this.publisher.initialOccupants.length; i++) {\n      const occupantId = this.publisher.initialOccupants[i];\n      if (occupantId === this.clientId) continue; // Happens during non-graceful reconnects due to zombie sessions\n      this.addAvailableOccupant(occupantId);\n    }\n\n    this.syncOccupants();\n  }\n\n  onWebsocketClose(event) {\n    // The connection was closed successfully. Don't try to reconnect.\n    if (event.code === WS_NORMAL_CLOSURE) {\n      return;\n    }\n\n    console.warn(\"Janus websocket closed unexpectedly.\");\n    if (this.onReconnecting) {\n      this.onReconnecting(this.reconnectionDelay);\n    }\n\n    this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay);\n  }\n\n  reconnect() {\n    // Dispose of all networked entities and other resources tied to the session.\n    this.disconnect();\n\n    this.connect()\n      .then(() => {\n        this.reconnectionDelay = this.initialReconnectionDelay;\n        this.reconnectionAttempts = 0;\n\n        if (this.onReconnected) {\n          this.onReconnected();\n        }\n      })\n      .catch(error => {\n        this.reconnectionDelay += 1000;\n        this.reconnectionAttempts++;\n\n        if (this.reconnectionAttempts > this.maxReconnectionAttempts && this.onReconnectionError) {\n          return this.onReconnectionError(\n            new Error(\"Connection could not be reestablished, exceeded maximum number of reconnection attempts.\")\n          );\n        }\n\n        console.warn(\"Error during reconnect, retrying.\");\n        console.warn(error);\n\n        if (this.onReconnecting) {\n          this.onReconnecting(this.reconnectionDelay);\n        }\n\n        this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay);\n      });\n  }\n\n  performDelayedReconnect() {\n    if (this.delayedReconnectTimeout) {\n      clearTimeout(this.delayedReconnectTimeout);\n    }\n\n    this.delayedReconnectTimeout = setTimeout(() => {\n      this.delayedReconnectTimeout = null;\n      this.reconnect();\n    }, 10000);\n  }\n\n  onWebsocketMessage(event) {\n    this.session.receive(JSON.parse(event.data));\n  }\n\n  addAvailableOccupant(occupantId) {\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      this.availableOccupants.push(occupantId);\n    }\n  }\n\n  removeAvailableOccupant(occupantId) {\n    const idx = this.availableOccupants.indexOf(occupantId);\n    if (idx !== -1) {\n      this.availableOccupants.splice(idx, 1);\n    }\n  }\n\n  syncOccupants(requestedOccupants) {\n    if (requestedOccupants) {\n      this.requestedOccupants = requestedOccupants;\n    }\n\n    if (!this.requestedOccupants) {\n      return;\n    }\n\n    // Add any requested, available, and non-pending occupants.\n    for (let i = 0; i < this.requestedOccupants.length; i++) {\n      const occupantId = this.requestedOccupants[i];\n      if (!this.occupants[occupantId] && this.availableOccupants.indexOf(occupantId) !== -1 && !this.pendingOccupants.has(occupantId)) {\n        this.addOccupant(occupantId);\n      }\n    }\n\n    // Remove any unrequested and currently added occupants.\n    for (let j = 0; j < this.availableOccupants.length; j++) {\n      const occupantId = this.availableOccupants[j];\n      if (this.occupants[occupantId] && this.requestedOccupants.indexOf(occupantId) === -1) {\n        this.removeOccupant(occupantId);\n      }\n    }\n\n    // Call the Networked AFrame callbacks for the updated occupants list.\n    this.onOccupantsChanged(this.occupants);\n  }\n\n  async addOccupant(occupantId) {\n    this.pendingOccupants.add(occupantId);\n    \n    const availableOccupantsCount = this.availableOccupants.length;\n    if (availableOccupantsCount > AVAILABLE_OCCUPANTS_THRESHOLD) {\n      await randomDelay(0, MAX_SUBSCRIBE_DELAY);\n    }\n  \n    const subscriber = await this.createSubscriber(occupantId);\n    if (subscriber) {\n      if(!this.pendingOccupants.has(occupantId)) {\n        subscriber.conn.close();\n      } else {\n        this.pendingOccupants.delete(occupantId);\n        this.occupantIds.push(occupantId);\n        this.occupants[occupantId] = subscriber;\n\n        this.setMediaStream(occupantId, subscriber.mediaStream);\n\n        // Call the Networked AFrame callbacks for the new occupant.\n        this.onOccupantConnected(occupantId);\n      }\n    }\n  }\n\n  removeAllOccupants() {\n    this.pendingOccupants.clear();\n    for (let i = this.occupantIds.length - 1; i >= 0; i--) {\n      this.removeOccupant(this.occupantIds[i]);\n    }\n  }\n\n  removeOccupant(occupantId) {\n    this.pendingOccupants.delete(occupantId);\n    \n    if (this.occupants[occupantId]) {\n      // Close the subscriber peer connection. Which also detaches the plugin handle.\n      this.occupants[occupantId].conn.close();\n      delete this.occupants[occupantId];\n      \n      this.occupantIds.splice(this.occupantIds.indexOf(occupantId), 1);\n    }\n\n    if (this.mediaStreams[occupantId]) {\n      delete this.mediaStreams[occupantId];\n    }\n\n    if (this.pendingMediaRequests.has(occupantId)) {\n      const msg = \"The user disconnected before the media stream was resolved.\";\n      this.pendingMediaRequests.get(occupantId).audio.reject(msg);\n      this.pendingMediaRequests.get(occupantId).video.reject(msg);\n      this.pendingMediaRequests.delete(occupantId);\n    }\n\n    // Call the Networked AFrame callbacks for the removed occupant.\n    this.onOccupantDisconnected(occupantId);\n  }\n\n  associate(conn, handle) {\n    conn.addEventListener(\"icecandidate\", ev => {\n      handle.sendTrickle(ev.candidate || null).catch(e => error(\"Error trickling ICE: %o\", e));\n    });\n    conn.addEventListener(\"iceconnectionstatechange\", ev => {\n      if (conn.iceConnectionState === \"connected\") {\n        console.log(\"ICE state changed to connected\");\n      }\n      if (conn.iceConnectionState === \"disconnected\") {\n        console.warn(\"ICE state changed to disconnected\");\n      }\n      if (conn.iceConnectionState === \"failed\") {\n        console.warn(\"ICE failure detected. Reconnecting in 10s.\");\n        this.performDelayedReconnect();\n      }\n    })\n\n    // we have to debounce these because janus gets angry if you send it a new SDP before\n    // it's finished processing an existing SDP. in actuality, it seems like this is maybe\n    // too liberal and we need to wait some amount of time after an offer before sending another,\n    // but we don't currently know any good way of detecting exactly how long :(\n    conn.addEventListener(\n      \"negotiationneeded\",\n      debounce(ev => {\n        debug(\"Sending new offer for handle: %o\", handle);\n        var offer = conn.createOffer().then(this.configurePublisherSdp).then(this.fixSafariIceUFrag);\n        var local = offer.then(o => conn.setLocalDescription(o));\n        var remote = offer;\n\n        remote = remote\n          .then(this.fixSafariIceUFrag)\n          .then(j => handle.sendJsep(j))\n          .then(r => conn.setRemoteDescription(r.jsep));\n        return Promise.all([local, remote]).catch(e => error(\"Error negotiating offer: %o\", e));\n      })\n    );\n    handle.on(\n      \"event\",\n      debounce(ev => {\n        var jsep = ev.jsep;\n        if (jsep && jsep.type == \"offer\") {\n          debug(\"Accepting new offer for handle: %o\", handle);\n          var answer = conn\n            .setRemoteDescription(this.configureSubscriberSdp(jsep))\n            .then(_ => conn.createAnswer())\n            .then(this.fixSafariIceUFrag);\n          var local = answer.then(a => conn.setLocalDescription(a));\n          var remote = answer.then(j => handle.sendJsep(j));\n          return Promise.all([local, remote]).catch(e => error(\"Error negotiating answer: %o\", e));\n        } else {\n          // some other kind of event, nothing to do\n          return null;\n        }\n      })\n    );\n  }\n\n  async createPublisher() {\n    var handle = new mj.JanusPluginHandle(this.session);\n    var conn = new RTCPeerConnection(this.peerConnectionConfig || DEFAULT_PEER_CONNECTION_CONFIG);\n\n    debug(\"pub waiting for sfu\");\n    await handle.attach(\"janus.plugin.sfu\", this.loops && this.clientId ? parseInt(this.clientId) % this.loops : undefined);\n\n    this.associate(conn, handle);\n\n    debug(\"pub waiting for data channels & webrtcup\");\n    var webrtcup = new Promise(resolve => handle.on(\"webrtcup\", resolve));\n\n    // Unreliable datachannel: sending and receiving component updates.\n    // Reliable datachannel: sending and recieving entity instantiations.\n    var reliableChannel = conn.createDataChannel(\"reliable\", { ordered: true });\n    var unreliableChannel = conn.createDataChannel(\"unreliable\", {\n      ordered: false,\n      maxRetransmits: 0\n    });\n\n    reliableChannel.addEventListener(\"message\", e => this.onDataChannelMessage(e, \"janus-reliable\"));\n    unreliableChannel.addEventListener(\"message\", e => this.onDataChannelMessage(e, \"janus-unreliable\"));\n\n    await webrtcup;\n    await untilDataChannelOpen(reliableChannel);\n    await untilDataChannelOpen(unreliableChannel);\n\n    // doing this here is sort of a hack around chrome renegotiation weirdness --\n    // if we do it prior to webrtcup, chrome on gear VR will sometimes put a\n    // renegotiation offer in flight while the first offer was still being\n    // processed by janus. we should find some more principled way to figure out\n    // when janus is done in the future.\n    if (this.localMediaStream) {\n      this.localMediaStream.getTracks().forEach(track => {\n        conn.addTrack(track, this.localMediaStream);\n      });\n    }\n\n    // Handle all of the join and leave events.\n    handle.on(\"event\", ev => {\n      var data = ev.plugindata.data;\n      if (data.event == \"join\" && data.room_id == this.room) {\n        if (this.delayedReconnectTimeout) {\n          // Don't create a new RTCPeerConnection, all RTCPeerConnection will be closed in less than 10s.\n          return;\n        }\n        this.addAvailableOccupant(data.user_id);\n        this.syncOccupants();\n      } else if (data.event == \"leave\" && data.room_id == this.room) {\n        this.removeAvailableOccupant(data.user_id);\n        this.removeOccupant(data.user_id);\n      } else if (data.event == \"blocked\") {\n        document.body.dispatchEvent(new CustomEvent(\"blocked\", { detail: { clientId: data.by } }));\n      } else if (data.event == \"unblocked\") {\n        document.body.dispatchEvent(new CustomEvent(\"unblocked\", { detail: { clientId: data.by } }));\n      } else if (data.event === \"data\") {\n        this.onData(JSON.parse(data.body), \"janus-event\");\n      }\n    });\n\n    debug(\"pub waiting for join\");\n\n    // Send join message to janus. Listen for join/leave messages. Automatically subscribe to all users' WebRTC data.\n    var message = await this.sendJoin(handle, {\n      notifications: true,\n      data: true\n    });\n\n    if (!message.plugindata.data.success) {\n      const err = message.plugindata.data.error;\n      console.error(err);\n      // We may get here because of an expired JWT.\n      // Close the connection ourself otherwise janus will close it after\n      // session_timeout because we didn't send any keepalive and this will\n      // trigger a delayed reconnect because of the iceconnectionstatechange\n      // listener for failure state.\n      // Even if the app code calls disconnect in case of error, disconnect\n      // won't close the peer connection because this.publisher is not set.\n      conn.close();\n      throw err;\n    }\n\n    var initialOccupants = message.plugindata.data.response.users[this.room] || [];\n\n    if (initialOccupants.includes(this.clientId)) {\n      console.warn(\"Janus still has previous session for this client. Reconnecting in 10s.\");\n      this.performDelayedReconnect();\n    }\n\n    debug(\"publisher ready\");\n    return {\n      handle,\n      initialOccupants,\n      reliableChannel,\n      unreliableChannel,\n      conn\n    };\n  }\n\n  configurePublisherSdp(jsep) {\n    jsep.sdp = jsep.sdp.replace(/a=fmtp:(109|111).*\\r\\n/g, (line, pt) => {\n      const parameters = Object.assign(sdpUtils.parseFmtp(line), OPUS_PARAMETERS);\n      return sdpUtils.writeFmtp({ payloadType: pt, parameters: parameters });\n    });\n    return jsep;\n  }\n\n  configureSubscriberSdp(jsep) {\n    // todo: consider cleaning up these hacks to use sdputils\n    if (!isH264VideoSupported) {\n      if (navigator.userAgent.indexOf(\"HeadlessChrome\") !== -1) {\n        // HeadlessChrome (e.g. puppeteer) doesn't support webrtc video streams, so we remove those lines from the SDP.\n        jsep.sdp = jsep.sdp.replace(/m=video[^]*m=/, \"m=\");\n      }\n    }\n\n    // TODO: Hack to get video working on Chrome for Android. https://groups.google.com/forum/#!topic/mozilla.dev.media/Ye29vuMTpo8\n    if (navigator.userAgent.indexOf(\"Android\") === -1) {\n      jsep.sdp = jsep.sdp.replace(\n        \"a=rtcp-fb:107 goog-remb\\r\\n\",\n        \"a=rtcp-fb:107 goog-remb\\r\\na=rtcp-fb:107 transport-cc\\r\\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\\r\\n\"\n      );\n    } else {\n      jsep.sdp = jsep.sdp.replace(\n        \"a=rtcp-fb:107 goog-remb\\r\\n\",\n        \"a=rtcp-fb:107 goog-remb\\r\\na=rtcp-fb:107 transport-cc\\r\\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\\r\\n\"\n      );\n    }\n    return jsep;\n  }\n\n  async fixSafariIceUFrag(jsep) {\n    // Safari produces a \\n instead of an \\r\\n for the ice-ufrag. See https://github.com/meetecho/janus-gateway/issues/1818\n    jsep.sdp = jsep.sdp.replace(/[^\\r]\\na=ice-ufrag/g, \"\\r\\na=ice-ufrag\");\n    return jsep\n  }\n\n  async createSubscriber(occupantId, maxRetries = 5) {\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      console.warn(occupantId + \": cancelled occupant connection, occupant left before subscription negotation.\");\n      return null;\n    }\n\n    var handle = new mj.JanusPluginHandle(this.session);\n    var conn = new RTCPeerConnection(this.peerConnectionConfig || DEFAULT_PEER_CONNECTION_CONFIG);\n\n    debug(occupantId + \": sub waiting for sfu\");\n    await handle.attach(\"janus.plugin.sfu\", this.loops ? parseInt(occupantId) % this.loops : undefined);\n\n    this.associate(conn, handle);\n\n    debug(occupantId + \": sub waiting for join\");\n\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      conn.close();\n      console.warn(occupantId + \": cancelled occupant connection, occupant left after attach\");\n      return null;\n    }\n\n    let webrtcFailed = false;\n\n    const webrtcup = new Promise(resolve => {\n      const leftInterval = setInterval(() => {\n        if (this.availableOccupants.indexOf(occupantId) === -1) {\n          clearInterval(leftInterval);\n          resolve();\n        }\n      }, 1000);\n\n      const timeout = setTimeout(() => {\n        clearInterval(leftInterval);\n        webrtcFailed = true;\n        resolve();\n      }, SUBSCRIBE_TIMEOUT_MS);\n\n      handle.on(\"webrtcup\", () => {\n        clearTimeout(timeout);\n        clearInterval(leftInterval);\n        resolve();\n      });\n    });\n\n    // Send join message to janus. Don't listen for join/leave messages. Subscribe to the occupant's media.\n    // Janus should send us an offer for this occupant's media in response to this.\n    await this.sendJoin(handle, { media: occupantId });\n\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      conn.close();\n      console.warn(occupantId + \": cancelled occupant connection, occupant left after join\");\n      return null;\n    }\n\n    debug(occupantId + \": sub waiting for webrtcup\");\n    await webrtcup;\n\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      conn.close();\n      console.warn(occupantId + \": cancel occupant connection, occupant left during or after webrtcup\");\n      return null;\n    }\n\n    if (webrtcFailed) {\n      conn.close();\n      if (maxRetries > 0) {\n        console.warn(occupantId + \": webrtc up timed out, retrying\");\n        return this.createSubscriber(occupantId, maxRetries - 1);\n      } else {\n        console.warn(occupantId + \": webrtc up timed out\");\n        return null;\n      }\n    }\n\n    if (isSafari && !this._iOSHackDelayedInitialPeer) {\n      // HACK: the first peer on Safari during page load can fail to work if we don't\n      // wait some time before continuing here. See: https://github.com/mozilla/hubs/pull/1692\n      await (new Promise((resolve) => setTimeout(resolve, 3000)));\n      this._iOSHackDelayedInitialPeer = true;\n    }\n\n    var mediaStream = new MediaStream();\n    var receivers = conn.getReceivers();\n    receivers.forEach(receiver => {\n      if (receiver.track) {\n        mediaStream.addTrack(receiver.track);\n      }\n    });\n    if (mediaStream.getTracks().length === 0) {\n      mediaStream = null;\n    }\n\n    debug(occupantId + \": subscriber ready\");\n    return {\n      handle,\n      mediaStream,\n      conn\n    };\n  }\n\n  sendJoin(handle, subscribe) {\n    return handle.sendMessage({\n      kind: \"join\",\n      room_id: this.room,\n      user_id: this.clientId,\n      subscribe,\n      token: this.joinToken\n    });\n  }\n\n  toggleFreeze() {\n    if (this.frozen) {\n      this.unfreeze();\n    } else {\n      this.freeze();\n    }\n  }\n\n  freeze() {\n    this.frozen = true;\n  }\n\n  unfreeze() {\n    this.frozen = false;\n    this.flushPendingUpdates();\n  }\n\n  dataForUpdateMultiMessage(networkId, message) {\n    // \"d\" is an array of entity datas, where each item in the array represents a unique entity and contains\n    // metadata for the entity, and an array of components that have been updated on the entity.\n    // This method finds the data corresponding to the given networkId.\n    for (let i = 0, l = message.data.d.length; i < l; i++) {\n      const data = message.data.d[i];\n\n      if (data.networkId === networkId) {\n        return data;\n      }\n    }\n\n    return null;\n  }\n\n  getPendingData(networkId, message) {\n    if (!message) return null;\n\n    let data = message.dataType === \"um\" ? this.dataForUpdateMultiMessage(networkId, message) : message.data;\n\n    // Ignore messages relating to users who have disconnected since freezing, their entities\n    // will have aleady been removed by NAF.\n    // Note that delete messages have no \"owner\" so we have to check for that as well.\n    if (data.owner && !this.occupants[data.owner]) return null;\n\n    // Ignore messages from users that we may have blocked while frozen.\n    if (data.owner && this.blockedClients.has(data.owner)) return null;\n\n    return data\n  }\n\n  // Used externally\n  getPendingDataForNetworkId(networkId) {\n    return this.getPendingData(networkId, this.frozenUpdates.get(networkId));\n  }\n\n  flushPendingUpdates() {\n    for (const [networkId, message] of this.frozenUpdates) {\n      let data = this.getPendingData(networkId, message);\n      if (!data) continue;\n\n      // Override the data type on \"um\" messages types, since we extract entity updates from \"um\" messages into\n      // individual frozenUpdates in storeSingleMessage.\n      const dataType = message.dataType === \"um\" ? \"u\" : message.dataType;\n\n      this.onOccupantMessage(null, dataType, data, message.source);\n    }\n    this.frozenUpdates.clear();\n  }\n\n  storeMessage(message) {\n    if (message.dataType === \"um\") { // UpdateMulti\n      for (let i = 0, l = message.data.d.length; i < l; i++) {\n        this.storeSingleMessage(message, i);\n      }\n    } else {\n      this.storeSingleMessage(message);\n    }\n  }\n\n  storeSingleMessage(message, index) {\n    const data = index !== undefined ? message.data.d[index] : message.data;\n    const dataType = message.dataType;\n    const source = message.source;\n\n    const networkId = data.networkId;\n\n    if (!this.frozenUpdates.has(networkId)) {\n      this.frozenUpdates.set(networkId, message);\n    } else {\n      const storedMessage = this.frozenUpdates.get(networkId);\n      const storedData = storedMessage.dataType === \"um\" ? this.dataForUpdateMultiMessage(networkId, storedMessage) : storedMessage.data;\n\n      // Avoid updating components if the entity data received did not come from the current owner.\n      const isOutdatedMessage = data.lastOwnerTime < storedData.lastOwnerTime;\n      const isContemporaneousMessage = data.lastOwnerTime === storedData.lastOwnerTime;\n      if (isOutdatedMessage || (isContemporaneousMessage && storedData.owner > data.owner)) {\n        return;\n      }\n\n      if (dataType === \"r\") {\n        const createdWhileFrozen = storedData && storedData.isFirstSync;\n        if (createdWhileFrozen) {\n          // If the entity was created and deleted while frozen, don't bother conveying anything to the consumer.\n          this.frozenUpdates.delete(networkId);\n        } else {\n          // Delete messages override any other messages for this entity\n          this.frozenUpdates.set(networkId, message);\n        }\n      } else {\n        // merge in component updates\n        if (storedData.components && data.components) {\n          Object.assign(storedData.components, data.components);\n        }\n      }\n    }\n  }\n\n  onDataChannelMessage(e, source) {\n    this.onData(JSON.parse(e.data), source);\n  }\n\n  onData(message, source) {\n    if (debug.enabled) {\n      debug(`DC in: ${message}`);\n    }\n\n    if (!message.dataType) return;\n\n    message.source = source;\n\n    if (this.frozen) {\n      this.storeMessage(message);\n    } else {\n      this.onOccupantMessage(null, message.dataType, message.data, message.source);\n    }\n  }\n\n  shouldStartConnectionTo(client) {\n    return true;\n  }\n\n  startStreamConnection(client) {}\n\n  closeStreamConnection(client) {}\n\n  getConnectStatus(clientId) {\n    return this.occupants[clientId] ? NAF.adapters.IS_CONNECTED : NAF.adapters.NOT_CONNECTED;\n  }\n\n  async updateTimeOffset() {\n    if (this.isDisconnected()) return;\n\n    const clientSentTime = Date.now();\n\n    const res = await fetch(document.location.href, {\n      method: \"HEAD\",\n      cache: \"no-cache\"\n    });\n\n    const precision = 1000;\n    const serverReceivedTime = new Date(res.headers.get(\"Date\")).getTime() + precision / 2;\n    const clientReceivedTime = Date.now();\n    const serverTime = serverReceivedTime + (clientReceivedTime - clientSentTime) / 2;\n    const timeOffset = serverTime - clientReceivedTime;\n\n    this.serverTimeRequests++;\n\n    if (this.serverTimeRequests <= 10) {\n      this.timeOffsets.push(timeOffset);\n    } else {\n      this.timeOffsets[this.serverTimeRequests % 10] = timeOffset;\n    }\n\n    this.avgTimeOffset = this.timeOffsets.reduce((acc, offset) => (acc += offset), 0) / this.timeOffsets.length;\n\n    if (this.serverTimeRequests > 10) {\n      debug(`new server time offset: ${this.avgTimeOffset}ms`);\n      setTimeout(() => this.updateTimeOffset(), 5 * 60 * 1000); // Sync clock every 5 minutes.\n    } else {\n      this.updateTimeOffset();\n    }\n  }\n\n  getServerTime() {\n    return Date.now() + this.avgTimeOffset;\n  }\n\n  getMediaStream(clientId, type = \"audio\") {\n    if (this.mediaStreams[clientId]) {\n      debug(`Already had ${type} for ${clientId}`);\n      return Promise.resolve(this.mediaStreams[clientId][type]);\n    } else {\n      debug(`Waiting on ${type} for ${clientId}`);\n      if (!this.pendingMediaRequests.has(clientId)) {\n        this.pendingMediaRequests.set(clientId, {});\n\n        const audioPromise = new Promise((resolve, reject) => {\n          this.pendingMediaRequests.get(clientId).audio = { resolve, reject };\n        });\n        const videoPromise = new Promise((resolve, reject) => {\n          this.pendingMediaRequests.get(clientId).video = { resolve, reject };\n        });\n\n        this.pendingMediaRequests.get(clientId).audio.promise = audioPromise;\n        this.pendingMediaRequests.get(clientId).video.promise = videoPromise;\n\n        audioPromise.catch(e => console.warn(`${clientId} getMediaStream Audio Error`, e));\n        videoPromise.catch(e => console.warn(`${clientId} getMediaStream Video Error`, e));\n      }\n      return this.pendingMediaRequests.get(clientId)[type].promise;\n    }\n  }\n\n  setMediaStream(clientId, stream) {\n    // Safari doesn't like it when you use single a mixed media stream where one of the tracks is inactive, so we\n    // split the tracks into two streams.\n    const audioStream = new MediaStream();\n    try {\n    stream.getAudioTracks().forEach(track => audioStream.addTrack(track));\n\n    } catch(e) {\n      console.warn(`${clientId} setMediaStream Audio Error`, e);\n    }\n    const videoStream = new MediaStream();\n    try {\n    stream.getVideoTracks().forEach(track => videoStream.addTrack(track));\n\n    } catch (e) {\n      console.warn(`${clientId} setMediaStream Video Error`, e);\n    }\n\n    this.mediaStreams[clientId] = { audio: audioStream, video: videoStream };\n\n    // Resolve the promise for the user's media stream if it exists.\n    if (this.pendingMediaRequests.has(clientId)) {\n      this.pendingMediaRequests.get(clientId).audio.resolve(audioStream);\n      this.pendingMediaRequests.get(clientId).video.resolve(videoStream);\n    }\n  }\n\n  getLocalMediaStream() {\n    return this.localMediaStream;\n  }\n\n  async setLocalMediaStream(stream) {\n    // our job here is to make sure the connection winds up with RTP senders sending the stuff in this stream,\n    // and not the stuff that isn't in this stream. strategy is to replace existing tracks if we can, add tracks\n    // that we can't replace, and disable tracks that don't exist anymore.\n\n    // note that we don't ever remove a track from the stream -- since Janus doesn't support Unified Plan, we absolutely\n    // can't wind up with a SDP that has >1 audio or >1 video tracks, even if one of them is inactive (what you get if\n    // you remove a track from an existing stream.)\n    if (this.publisher && this.publisher.conn) {\n      const existingSenders = this.publisher.conn.getSenders();\n      const newSenders = [];\n      const tracks = stream.getTracks();\n\n      for (let i = 0; i < tracks.length; i++) {\n        const t = tracks[i];\n        const sender = existingSenders.find(s => s.track != null && s.track.kind == t.kind);\n\n        if (sender != null) {\n          if (sender.replaceTrack) {\n            await sender.replaceTrack(t);\n          } else {\n            // Fallback for browsers that don't support replaceTrack. At this time of this writing\n            // most browsers support it, and testing this code path seems to not work properly\n            // in Chrome anymore.\n            stream.removeTrack(sender.track);\n            stream.addTrack(t);\n          }\n          newSenders.push(sender);\n        } else {\n          newSenders.push(this.publisher.conn.addTrack(t, stream));\n        }\n      }\n      existingSenders.forEach(s => {\n        if (!newSenders.includes(s)) {\n          s.track.enabled = false;\n        }\n      });\n    }\n    this.localMediaStream = stream;\n    this.setMediaStream(this.clientId, stream);\n  }\n\n  enableMicrophone(enabled) {\n    if (this.publisher && this.publisher.conn) {\n      this.publisher.conn.getSenders().forEach(s => {\n        if (s.track.kind == \"audio\") {\n          s.track.enabled = enabled;\n        }\n      });\n    }\n  }\n\n  sendData(clientId, dataType, data) {\n    if (!this.publisher) {\n      console.warn(\"sendData called without a publisher\");\n    } else {\n      switch (this.unreliableTransport) {\n        case \"websocket\":\n          if (this.ws.readyState === 1) { // OPEN\n            this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }), whom: clientId });\n          }\n          break;\n        case \"datachannel\":\n          if (this.publisher.unreliableChannel.readyState === \"open\") {\n            this.publisher.unreliableChannel.send(JSON.stringify({ clientId, dataType, data }));\n          }\n          break;\n        default:\n          this.unreliableTransport(clientId, dataType, data);\n          break;\n      }\n    }\n  }\n\n  sendDataGuaranteed(clientId, dataType, data) {\n    if (!this.publisher) {\n      console.warn(\"sendDataGuaranteed called without a publisher\");\n    } else {\n      switch (this.reliableTransport) {\n        case \"websocket\":\n          if (this.ws.readyState === 1) { // OPEN\n            this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }), whom: clientId });\n          }\n          break;\n        case \"datachannel\":\n          if (this.publisher.reliableChannel.readyState === \"open\") {\n            this.publisher.reliableChannel.send(JSON.stringify({ clientId, dataType, data }));\n          }\n          break;\n        default:\n          this.reliableTransport(clientId, dataType, data);\n          break;\n      }\n    }\n  }\n\n  broadcastData(dataType, data) {\n    if (!this.publisher) {\n      console.warn(\"broadcastData called without a publisher\");\n    } else {\n      switch (this.unreliableTransport) {\n        case \"websocket\":\n          if (this.ws.readyState === 1) { // OPEN\n            this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }) });\n          }\n          break;\n        case \"datachannel\":\n          if (this.publisher.unreliableChannel.readyState === \"open\") {\n            this.publisher.unreliableChannel.send(JSON.stringify({ dataType, data }));\n          }\n          break;\n        default:\n          this.unreliableTransport(undefined, dataType, data);\n          break;\n      }\n    }\n  }\n\n  broadcastDataGuaranteed(dataType, data) {\n    if (!this.publisher) {\n      console.warn(\"broadcastDataGuaranteed called without a publisher\");\n    } else {\n      switch (this.reliableTransport) {\n        case \"websocket\":\n          if (this.ws.readyState === 1) { // OPEN\n            this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }) });\n          }\n          break;\n        case \"datachannel\":\n          if (this.publisher.reliableChannel.readyState === \"open\") {\n            this.publisher.reliableChannel.send(JSON.stringify({ dataType, data }));\n          }\n          break;\n        default:\n          this.reliableTransport(undefined, dataType, data);\n          break;\n      }\n    }\n  }\n\n  kick(clientId, permsToken) {\n    return this.publisher.handle.sendMessage({ kind: \"kick\", room_id: this.room, user_id: clientId, token: permsToken }).then(() => {\n      document.body.dispatchEvent(new CustomEvent(\"kicked\", { detail: { clientId: clientId } }));\n    });\n  }\n\n  block(clientId) {\n    return this.publisher.handle.sendMessage({ kind: \"block\", whom: clientId }).then(() => {\n      this.blockedClients.set(clientId, true);\n      document.body.dispatchEvent(new CustomEvent(\"blocked\", { detail: { clientId: clientId } }));\n    });\n  }\n\n  unblock(clientId) {\n    return this.publisher.handle.sendMessage({ kind: \"unblock\", whom: clientId }).then(() => {\n      this.blockedClients.delete(clientId);\n      document.body.dispatchEvent(new CustomEvent(\"unblocked\", { detail: { clientId: clientId } }));\n    });\n  }\n}\n\nNAF.adapters.register(\"janus\", JanusAdapter);\n\nmodule.exports = JanusAdapter;\n","/* eslint-env browser */\n\n/**\n * This is the web browser implementation of `debug()`.\n */\n\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = localstorage();\nexports.destroy = (() => {\n\tlet warned = false;\n\n\treturn () => {\n\t\tif (!warned) {\n\t\t\twarned = true;\n\t\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t\t}\n\t};\n})();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n\t'#0000CC',\n\t'#0000FF',\n\t'#0033CC',\n\t'#0033FF',\n\t'#0066CC',\n\t'#0066FF',\n\t'#0099CC',\n\t'#0099FF',\n\t'#00CC00',\n\t'#00CC33',\n\t'#00CC66',\n\t'#00CC99',\n\t'#00CCCC',\n\t'#00CCFF',\n\t'#3300CC',\n\t'#3300FF',\n\t'#3333CC',\n\t'#3333FF',\n\t'#3366CC',\n\t'#3366FF',\n\t'#3399CC',\n\t'#3399FF',\n\t'#33CC00',\n\t'#33CC33',\n\t'#33CC66',\n\t'#33CC99',\n\t'#33CCCC',\n\t'#33CCFF',\n\t'#6600CC',\n\t'#6600FF',\n\t'#6633CC',\n\t'#6633FF',\n\t'#66CC00',\n\t'#66CC33',\n\t'#9900CC',\n\t'#9900FF',\n\t'#9933CC',\n\t'#9933FF',\n\t'#99CC00',\n\t'#99CC33',\n\t'#CC0000',\n\t'#CC0033',\n\t'#CC0066',\n\t'#CC0099',\n\t'#CC00CC',\n\t'#CC00FF',\n\t'#CC3300',\n\t'#CC3333',\n\t'#CC3366',\n\t'#CC3399',\n\t'#CC33CC',\n\t'#CC33FF',\n\t'#CC6600',\n\t'#CC6633',\n\t'#CC9900',\n\t'#CC9933',\n\t'#CCCC00',\n\t'#CCCC33',\n\t'#FF0000',\n\t'#FF0033',\n\t'#FF0066',\n\t'#FF0099',\n\t'#FF00CC',\n\t'#FF00FF',\n\t'#FF3300',\n\t'#FF3333',\n\t'#FF3366',\n\t'#FF3399',\n\t'#FF33CC',\n\t'#FF33FF',\n\t'#FF6600',\n\t'#FF6633',\n\t'#FF9900',\n\t'#FF9933',\n\t'#FFCC00',\n\t'#FFCC33'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\n// eslint-disable-next-line complexity\nfunction useColors() {\n\t// NB: In an Electron preload script, document will be defined but not fully\n\t// initialized. Since we know we're in Chrome, we'll just detect this case\n\t// explicitly\n\tif (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {\n\t\treturn true;\n\t}\n\n\t// Internet Explorer and Edge do not support colors.\n\tif (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\\/(\\d+)/)) {\n\t\treturn false;\n\t}\n\n\t// Is webkit? http://stackoverflow.com/a/16459606/376773\n\t// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632\n\treturn (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||\n\t\t// Is firebug? http://stackoverflow.com/a/398120/376773\n\t\t(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||\n\t\t// Is firefox >= v31?\n\t\t// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31) ||\n\t\t// Double check webkit in userAgent just in case we are in a worker\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\\/(\\d+)/));\n}\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs(args) {\n\targs[0] = (this.useColors ? '%c' : '') +\n\t\tthis.namespace +\n\t\t(this.useColors ? ' %c' : ' ') +\n\t\targs[0] +\n\t\t(this.useColors ? '%c ' : ' ') +\n\t\t'+' + module.exports.humanize(this.diff);\n\n\tif (!this.useColors) {\n\t\treturn;\n\t}\n\n\tconst c = 'color: ' + this.color;\n\targs.splice(1, 0, c, 'color: inherit');\n\n\t// The final \"%c\" is somewhat tricky, because there could be other\n\t// arguments passed either before or after the %c, so we need to\n\t// figure out the correct index to insert the CSS into\n\tlet index = 0;\n\tlet lastC = 0;\n\targs[0].replace(/%[a-zA-Z%]/g, match => {\n\t\tif (match === '%%') {\n\t\t\treturn;\n\t\t}\n\t\tindex++;\n\t\tif (match === '%c') {\n\t\t\t// We only are interested in the *last* %c\n\t\t\t// (the user may have provided their own)\n\t\t\tlastC = index;\n\t\t}\n\t});\n\n\targs.splice(lastC, 0, c);\n}\n\n/**\n * Invokes `console.debug()` when available.\n * No-op when `console.debug` is not a \"function\".\n * If `console.debug` is not available, falls back\n * to `console.log`.\n *\n * @api public\n */\nexports.log = console.debug || console.log || (() => {});\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\nfunction save(namespaces) {\n\ttry {\n\t\tif (namespaces) {\n\t\t\texports.storage.setItem('debug', namespaces);\n\t\t} else {\n\t\t\texports.storage.removeItem('debug');\n\t\t}\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\nfunction load() {\n\tlet r;\n\ttry {\n\t\tr = exports.storage.getItem('debug');\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n\n\t// If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n\tif (!r && typeof process !== 'undefined' && 'env' in process) {\n\t\tr = process.env.DEBUG;\n\t}\n\n\treturn r;\n}\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage() {\n\ttry {\n\t\t// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context\n\t\t// The Browser also has localStorage in the global context.\n\t\treturn localStorage;\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\nmodule.exports = require('./common')(exports);\n\nconst {formatters} = module.exports;\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nformatters.j = function (v) {\n\ttry {\n\t\treturn JSON.stringify(v);\n\t} catch (error) {\n\t\treturn '[UnexpectedJSONParseError]: ' + error.message;\n\t}\n};\n","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n */\n\nfunction setup(env) {\n\tcreateDebug.debug = createDebug;\n\tcreateDebug.default = createDebug;\n\tcreateDebug.coerce = coerce;\n\tcreateDebug.disable = disable;\n\tcreateDebug.enable = enable;\n\tcreateDebug.enabled = enabled;\n\tcreateDebug.humanize = require('ms');\n\tcreateDebug.destroy = destroy;\n\n\tObject.keys(env).forEach(key => {\n\t\tcreateDebug[key] = env[key];\n\t});\n\n\t/**\n\t* The currently active debug mode names, and names to skip.\n\t*/\n\n\tcreateDebug.names = [];\n\tcreateDebug.skips = [];\n\n\t/**\n\t* Map of special \"%n\" handling functions, for the debug \"format\" argument.\n\t*\n\t* Valid key names are a single, lower or upper-case letter, i.e. \"n\" and \"N\".\n\t*/\n\tcreateDebug.formatters = {};\n\n\t/**\n\t* Selects a color for a debug namespace\n\t* @param {String} namespace The namespace string for the debug instance to be colored\n\t* @return {Number|String} An ANSI color code for the given namespace\n\t* @api private\n\t*/\n\tfunction selectColor(namespace) {\n\t\tlet hash = 0;\n\n\t\tfor (let i = 0; i < namespace.length; i++) {\n\t\t\thash = ((hash << 5) - hash) + namespace.charCodeAt(i);\n\t\t\thash |= 0; // Convert to 32bit integer\n\t\t}\n\n\t\treturn createDebug.colors[Math.abs(hash) % createDebug.colors.length];\n\t}\n\tcreateDebug.selectColor = selectColor;\n\n\t/**\n\t* Create a debugger with the given `namespace`.\n\t*\n\t* @param {String} namespace\n\t* @return {Function}\n\t* @api public\n\t*/\n\tfunction createDebug(namespace) {\n\t\tlet prevTime;\n\t\tlet enableOverride = null;\n\t\tlet namespacesCache;\n\t\tlet enabledCache;\n\n\t\tfunction debug(...args) {\n\t\t\t// Disabled?\n\t\t\tif (!debug.enabled) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst self = debug;\n\n\t\t\t// Set `diff` timestamp\n\t\t\tconst curr = Number(new Date());\n\t\t\tconst ms = curr - (prevTime || curr);\n\t\t\tself.diff = ms;\n\t\t\tself.prev = prevTime;\n\t\t\tself.curr = curr;\n\t\t\tprevTime = curr;\n\n\t\t\targs[0] = createDebug.coerce(args[0]);\n\n\t\t\tif (typeof args[0] !== 'string') {\n\t\t\t\t// Anything else let's inspect with %O\n\t\t\t\targs.unshift('%O');\n\t\t\t}\n\n\t\t\t// Apply any `formatters` transformations\n\t\t\tlet index = 0;\n\t\t\targs[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {\n\t\t\t\t// If we encounter an escaped % then don't increase the array index\n\t\t\t\tif (match === '%%') {\n\t\t\t\t\treturn '%';\n\t\t\t\t}\n\t\t\t\tindex++;\n\t\t\t\tconst formatter = createDebug.formatters[format];\n\t\t\t\tif (typeof formatter === 'function') {\n\t\t\t\t\tconst val = args[index];\n\t\t\t\t\tmatch = formatter.call(self, val);\n\n\t\t\t\t\t// Now we need to remove `args[index]` since it's inlined in the `format`\n\t\t\t\t\targs.splice(index, 1);\n\t\t\t\t\tindex--;\n\t\t\t\t}\n\t\t\t\treturn match;\n\t\t\t});\n\n\t\t\t// Apply env-specific formatting (colors, etc.)\n\t\t\tcreateDebug.formatArgs.call(self, args);\n\n\t\t\tconst logFn = self.log || createDebug.log;\n\t\t\tlogFn.apply(self, args);\n\t\t}\n\n\t\tdebug.namespace = namespace;\n\t\tdebug.useColors = createDebug.useColors();\n\t\tdebug.color = createDebug.selectColor(namespace);\n\t\tdebug.extend = extend;\n\t\tdebug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.\n\n\t\tObject.defineProperty(debug, 'enabled', {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: false,\n\t\t\tget: () => {\n\t\t\t\tif (enableOverride !== null) {\n\t\t\t\t\treturn enableOverride;\n\t\t\t\t}\n\t\t\t\tif (namespacesCache !== createDebug.namespaces) {\n\t\t\t\t\tnamespacesCache = createDebug.namespaces;\n\t\t\t\t\tenabledCache = createDebug.enabled(namespace);\n\t\t\t\t}\n\n\t\t\t\treturn enabledCache;\n\t\t\t},\n\t\t\tset: v => {\n\t\t\t\tenableOverride = v;\n\t\t\t}\n\t\t});\n\n\t\t// Env-specific initialization logic for debug instances\n\t\tif (typeof createDebug.init === 'function') {\n\t\t\tcreateDebug.init(debug);\n\t\t}\n\n\t\treturn debug;\n\t}\n\n\tfunction extend(namespace, delimiter) {\n\t\tconst newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);\n\t\tnewDebug.log = this.log;\n\t\treturn newDebug;\n\t}\n\n\t/**\n\t* Enables a debug mode by namespaces. This can include modes\n\t* separated by a colon and wildcards.\n\t*\n\t* @param {String} namespaces\n\t* @api public\n\t*/\n\tfunction enable(namespaces) {\n\t\tcreateDebug.save(namespaces);\n\t\tcreateDebug.namespaces = namespaces;\n\n\t\tcreateDebug.names = [];\n\t\tcreateDebug.skips = [];\n\n\t\tlet i;\n\t\tconst split = (typeof namespaces === 'string' ? namespaces : '').split(/[\\s,]+/);\n\t\tconst len = split.length;\n\n\t\tfor (i = 0; i < len; i++) {\n\t\t\tif (!split[i]) {\n\t\t\t\t// ignore empty strings\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tnamespaces = split[i].replace(/\\*/g, '.*?');\n\n\t\t\tif (namespaces[0] === '-') {\n\t\t\t\tcreateDebug.skips.push(new RegExp('^' + namespaces.slice(1) + '$'));\n\t\t\t} else {\n\t\t\t\tcreateDebug.names.push(new RegExp('^' + namespaces + '$'));\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t* Disable debug output.\n\t*\n\t* @return {String} namespaces\n\t* @api public\n\t*/\n\tfunction disable() {\n\t\tconst namespaces = [\n\t\t\t...createDebug.names.map(toNamespace),\n\t\t\t...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace)\n\t\t].join(',');\n\t\tcreateDebug.enable('');\n\t\treturn namespaces;\n\t}\n\n\t/**\n\t* Returns true if the given mode name is enabled, false otherwise.\n\t*\n\t* @param {String} name\n\t* @return {Boolean}\n\t* @api public\n\t*/\n\tfunction enabled(name) {\n\t\tif (name[name.length - 1] === '*') {\n\t\t\treturn true;\n\t\t}\n\n\t\tlet i;\n\t\tlet len;\n\n\t\tfor (i = 0, len = createDebug.skips.length; i < len; i++) {\n\t\t\tif (createDebug.skips[i].test(name)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\tfor (i = 0, len = createDebug.names.length; i < len; i++) {\n\t\t\tif (createDebug.names[i].test(name)) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t* Convert regexp to namespace\n\t*\n\t* @param {RegExp} regxep\n\t* @return {String} namespace\n\t* @api private\n\t*/\n\tfunction toNamespace(regexp) {\n\t\treturn regexp.toString()\n\t\t\t.substring(2, regexp.toString().length - 2)\n\t\t\t.replace(/\\.\\*\\?$/, '*');\n\t}\n\n\t/**\n\t* Coerce `val`.\n\t*\n\t* @param {Mixed} val\n\t* @return {Mixed}\n\t* @api private\n\t*/\n\tfunction coerce(val) {\n\t\tif (val instanceof Error) {\n\t\t\treturn val.stack || val.message;\n\t\t}\n\t\treturn val;\n\t}\n\n\t/**\n\t* XXX DO NOT USE. This is a temporary stub function.\n\t* XXX It WILL be removed in the next major release.\n\t*/\n\tfunction destroy() {\n\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t}\n\n\tcreateDebug.enable(createDebug.load());\n\n\treturn createDebug;\n}\n\nmodule.exports = setup;\n","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar w = d * 7;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n *  - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} [options]\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function(val, options) {\n  options = options || {};\n  var type = typeof val;\n  if (type === 'string' && val.length > 0) {\n    return parse(val);\n  } else if (type === 'number' && isFinite(val)) {\n    return options.long ? fmtLong(val) : fmtShort(val);\n  }\n  throw new Error(\n    'val is not a non-empty string or a valid number. val=' +\n      JSON.stringify(val)\n  );\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n  str = String(str);\n  if (str.length > 100) {\n    return;\n  }\n  var match = /^(-?(?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(\n    str\n  );\n  if (!match) {\n    return;\n  }\n  var n = parseFloat(match[1]);\n  var type = (match[2] || 'ms').toLowerCase();\n  switch (type) {\n    case 'years':\n    case 'year':\n    case 'yrs':\n    case 'yr':\n    case 'y':\n      return n * y;\n    case 'weeks':\n    case 'week':\n    case 'w':\n      return n * w;\n    case 'days':\n    case 'day':\n    case 'd':\n      return n * d;\n    case 'hours':\n    case 'hour':\n    case 'hrs':\n    case 'hr':\n    case 'h':\n      return n * h;\n    case 'minutes':\n    case 'minute':\n    case 'mins':\n    case 'min':\n    case 'm':\n      return n * m;\n    case 'seconds':\n    case 'second':\n    case 'secs':\n    case 'sec':\n    case 's':\n      return n * s;\n    case 'milliseconds':\n    case 'millisecond':\n    case 'msecs':\n    case 'msec':\n    case 'ms':\n      return n;\n    default:\n      return undefined;\n  }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return Math.round(ms / d) + 'd';\n  }\n  if (msAbs >= h) {\n    return Math.round(ms / h) + 'h';\n  }\n  if (msAbs >= m) {\n    return Math.round(ms / m) + 'm';\n  }\n  if (msAbs >= s) {\n    return Math.round(ms / s) + 's';\n  }\n  return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return plural(ms, msAbs, d, 'day');\n  }\n  if (msAbs >= h) {\n    return plural(ms, msAbs, h, 'hour');\n  }\n  if (msAbs >= m) {\n    return plural(ms, msAbs, m, 'minute');\n  }\n  if (msAbs >= s) {\n    return plural(ms, msAbs, s, 'second');\n  }\n  return ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, msAbs, n, name) {\n  var isPlural = msAbs >= n * 1.5;\n  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');\n}\n","/* eslint-env node */\n'use strict';\n\n// SDP helpers.\nconst SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n  return Math.random().toString(36).substring(2, 12);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n  return blob.trim().split('\\n').map(line => line.trim());\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n  const parts = blob.split('\\nm=');\n  return parts.map((part, index) => (index > 0 ?\n    'm=' + part : part).trim() + '\\r\\n');\n};\n\n// Returns the session description.\nSDPUtils.getDescription = function(blob) {\n  const sections = SDPUtils.splitSections(blob);\n  return sections && sections[0];\n};\n\n// Returns the individual media sections.\nSDPUtils.getMediaSections = function(blob) {\n  const sections = SDPUtils.splitSections(blob);\n  sections.shift();\n  return sections;\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n  return SDPUtils.splitLines(blob).filter(line => line.indexOf(prefix) === 0);\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\n// Input can be prefixed with a=.\nSDPUtils.parseCandidate = function(line) {\n  let parts;\n  // Parse both variants.\n  if (line.indexOf('a=candidate:') === 0) {\n    parts = line.substring(12).split(' ');\n  } else {\n    parts = line.substring(10).split(' ');\n  }\n\n  const candidate = {\n    foundation: parts[0],\n    component: {1: 'rtp', 2: 'rtcp'}[parts[1]] || parts[1],\n    protocol: parts[2].toLowerCase(),\n    priority: parseInt(parts[3], 10),\n    ip: parts[4],\n    address: parts[4], // address is an alias for ip.\n    port: parseInt(parts[5], 10),\n    // skip parts[6] == 'typ'\n    type: parts[7],\n  };\n\n  for (let i = 8; i < parts.length; i += 2) {\n    switch (parts[i]) {\n      case 'raddr':\n        candidate.relatedAddress = parts[i + 1];\n        break;\n      case 'rport':\n        candidate.relatedPort = parseInt(parts[i + 1], 10);\n        break;\n      case 'tcptype':\n        candidate.tcpType = parts[i + 1];\n        break;\n      case 'ufrag':\n        candidate.ufrag = parts[i + 1]; // for backward compatibility.\n        candidate.usernameFragment = parts[i + 1];\n        break;\n      default: // extension handling, in particular ufrag. Don't overwrite.\n        if (candidate[parts[i]] === undefined) {\n          candidate[parts[i]] = parts[i + 1];\n        }\n        break;\n    }\n  }\n  return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\n// This does not include the a= prefix!\nSDPUtils.writeCandidate = function(candidate) {\n  const sdp = [];\n  sdp.push(candidate.foundation);\n\n  const component = candidate.component;\n  if (component === 'rtp') {\n    sdp.push(1);\n  } else if (component === 'rtcp') {\n    sdp.push(2);\n  } else {\n    sdp.push(component);\n  }\n  sdp.push(candidate.protocol.toUpperCase());\n  sdp.push(candidate.priority);\n  sdp.push(candidate.address || candidate.ip);\n  sdp.push(candidate.port);\n\n  const type = candidate.type;\n  sdp.push('typ');\n  sdp.push(type);\n  if (type !== 'host' && candidate.relatedAddress &&\n      candidate.relatedPort) {\n    sdp.push('raddr');\n    sdp.push(candidate.relatedAddress);\n    sdp.push('rport');\n    sdp.push(candidate.relatedPort);\n  }\n  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n    sdp.push('tcptype');\n    sdp.push(candidate.tcpType);\n  }\n  if (candidate.usernameFragment || candidate.ufrag) {\n    sdp.push('ufrag');\n    sdp.push(candidate.usernameFragment || candidate.ufrag);\n  }\n  return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an ice-options line, returns an array of option tags.\n// Sample input:\n// a=ice-options:foo bar\nSDPUtils.parseIceOptions = function(line) {\n  return line.substring(14).split(' ');\n};\n\n// Parses a rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n  let parts = line.substring(9).split(' ');\n  const parsed = {\n    payloadType: parseInt(parts.shift(), 10), // was: id\n  };\n\n  parts = parts[0].split('/');\n\n  parsed.name = parts[0];\n  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n  parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n  // legacy alias, got renamed back to channels in ORTC.\n  parsed.numChannels = parsed.channels;\n  return parsed;\n};\n\n// Generates a rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n  let pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  const channels = codec.channels || codec.numChannels || 1;\n  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n      (channels !== 1 ? '/' + channels : '') + '\\r\\n';\n};\n\n// Parses a extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n  const parts = line.substring(9).split(' ');\n  return {\n    id: parseInt(parts[0], 10),\n    direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',\n    uri: parts[1],\n    attributes: parts.slice(2).join(' '),\n  };\n};\n\n// Generates an extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n      (headerExtension.direction && headerExtension.direction !== 'sendrecv'\n        ? '/' + headerExtension.direction\n        : '') +\n      ' ' + headerExtension.uri +\n      (headerExtension.attributes ? ' ' + headerExtension.attributes : '') +\n      '\\r\\n';\n};\n\n// Parses a fmtp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n  const parsed = {};\n  let kv;\n  const parts = line.substring(line.indexOf(' ') + 1).split(';');\n  for (let j = 0; j < parts.length; j++) {\n    kv = parts[j].trim().split('=');\n    parsed[kv[0].trim()] = kv[1];\n  }\n  return parsed;\n};\n\n// Generates a fmtp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n  let line = '';\n  let pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.parameters && Object.keys(codec.parameters).length) {\n    const params = [];\n    Object.keys(codec.parameters).forEach(param => {\n      if (codec.parameters[param] !== undefined) {\n        params.push(param + '=' + codec.parameters[param]);\n      } else {\n        params.push(param);\n      }\n    });\n    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n  }\n  return line;\n};\n\n// Parses a rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n  const parts = line.substring(line.indexOf(' ') + 1).split(' ');\n  return {\n    type: parts.shift(),\n    parameter: parts.join(' '),\n  };\n};\n\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n  let lines = '';\n  let pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n    // FIXME: special handling for trr-int?\n    codec.rtcpFeedback.forEach(fb => {\n      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n          '\\r\\n';\n    });\n  }\n  return lines;\n};\n\n// Parses a RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n  const sp = line.indexOf(' ');\n  const parts = {\n    ssrc: parseInt(line.substring(7, sp), 10),\n  };\n  const colon = line.indexOf(':', sp);\n  if (colon > -1) {\n    parts.attribute = line.substring(sp + 1, colon);\n    parts.value = line.substring(colon + 1);\n  } else {\n    parts.attribute = line.substring(sp + 1);\n  }\n  return parts;\n};\n\n// Parse a ssrc-group line (see RFC 5576). Sample input:\n// a=ssrc-group:semantics 12 34\nSDPUtils.parseSsrcGroup = function(line) {\n  const parts = line.substring(13).split(' ');\n  return {\n    semantics: parts.shift(),\n    ssrcs: parts.map(ssrc => parseInt(ssrc, 10)),\n  };\n};\n\n// Extracts the MID (RFC 5888) from a media section.\n// Returns the MID or undefined if no mid line was found.\nSDPUtils.getMid = function(mediaSection) {\n  const mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];\n  if (mid) {\n    return mid.substring(6);\n  }\n};\n\n// Parses a fingerprint line for DTLS-SRTP.\nSDPUtils.parseFingerprint = function(line) {\n  const parts = line.substring(14).split(' ');\n  return {\n    algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.\n    value: parts[1].toUpperCase(), // the definition is upper-case in RFC 4572.\n  };\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n  const lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n    'a=fingerprint:');\n  // Note: a=setup line is ignored since we use the 'auto' role in Edge.\n  return {\n    role: 'auto',\n    fingerprints: lines.map(SDPUtils.parseFingerprint),\n  };\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n  let sdp = 'a=setup:' + setupType + '\\r\\n';\n  params.fingerprints.forEach(fp => {\n    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n  });\n  return sdp;\n};\n\n// Parses a=crypto lines into\n//   https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members\nSDPUtils.parseCryptoLine = function(line) {\n  const parts = line.substring(9).split(' ');\n  return {\n    tag: parseInt(parts[0], 10),\n    cryptoSuite: parts[1],\n    keyParams: parts[2],\n    sessionParams: parts.slice(3),\n  };\n};\n\nSDPUtils.writeCryptoLine = function(parameters) {\n  return 'a=crypto:' + parameters.tag + ' ' +\n    parameters.cryptoSuite + ' ' +\n    (typeof parameters.keyParams === 'object'\n      ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)\n      : parameters.keyParams) +\n    (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +\n    '\\r\\n';\n};\n\n// Parses the crypto key parameters into\n//   https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*\nSDPUtils.parseCryptoKeyParams = function(keyParams) {\n  if (keyParams.indexOf('inline:') !== 0) {\n    return null;\n  }\n  const parts = keyParams.substring(7).split('|');\n  return {\n    keyMethod: 'inline',\n    keySalt: parts[0],\n    lifeTime: parts[1],\n    mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,\n    mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,\n  };\n};\n\nSDPUtils.writeCryptoKeyParams = function(keyParams) {\n  return keyParams.keyMethod + ':'\n    + keyParams.keySalt +\n    (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +\n    (keyParams.mkiValue && keyParams.mkiLength\n      ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength\n      : '');\n};\n\n// Extracts all SDES parameters.\nSDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {\n  const lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n    'a=crypto:');\n  return lines.map(SDPUtils.parseCryptoLine);\n};\n\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n  const ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,\n    'a=ice-ufrag:')[0];\n  const pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,\n    'a=ice-pwd:')[0];\n  if (!(ufrag && pwd)) {\n    return null;\n  }\n  return {\n    usernameFragment: ufrag.substring(12),\n    password: pwd.substring(10),\n  };\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n  let sdp = 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n      'a=ice-pwd:' + params.password + '\\r\\n';\n  if (params.iceLite) {\n    sdp += 'a=ice-lite\\r\\n';\n  }\n  return sdp;\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n  const description = {\n    codecs: [],\n    headerExtensions: [],\n    fecMechanisms: [],\n    rtcp: [],\n  };\n  const lines = SDPUtils.splitLines(mediaSection);\n  const mline = lines[0].split(' ');\n  description.profile = mline[2];\n  for (let i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n    const pt = mline[i];\n    const rtpmapline = SDPUtils.matchPrefix(\n      mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n    if (rtpmapline) {\n      const codec = SDPUtils.parseRtpMap(rtpmapline);\n      const fmtps = SDPUtils.matchPrefix(\n        mediaSection, 'a=fmtp:' + pt + ' ');\n      // Only the first a=fmtp:<pt> is considered.\n      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n      codec.rtcpFeedback = SDPUtils.matchPrefix(\n        mediaSection, 'a=rtcp-fb:' + pt + ' ')\n        .map(SDPUtils.parseRtcpFb);\n      description.codecs.push(codec);\n      // parse FEC mechanisms from rtpmap lines.\n      switch (codec.name.toUpperCase()) {\n        case 'RED':\n        case 'ULPFEC':\n          description.fecMechanisms.push(codec.name.toUpperCase());\n          break;\n        default: // only RED and ULPFEC are recognized as FEC mechanisms.\n          break;\n      }\n    }\n  }\n  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(line => {\n    description.headerExtensions.push(SDPUtils.parseExtmap(line));\n  });\n  const wildcardRtcpFb = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-fb:* ')\n    .map(SDPUtils.parseRtcpFb);\n  description.codecs.forEach(codec => {\n    wildcardRtcpFb.forEach(fb=> {\n      const duplicate = codec.rtcpFeedback.find(existingFeedback => {\n        return existingFeedback.type === fb.type &&\n          existingFeedback.parameter === fb.parameter;\n      });\n      if (!duplicate) {\n        codec.rtcpFeedback.push(fb);\n      }\n    });\n  });\n  // FIXME: parse rtcp.\n  return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n  let sdp = '';\n\n  // Build the mline.\n  sdp += 'm=' + kind + ' ';\n  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n  sdp += ' ' + (caps.profile || 'UDP/TLS/RTP/SAVPF') + ' ';\n  sdp += caps.codecs.map(codec => {\n    if (codec.preferredPayloadType !== undefined) {\n      return codec.preferredPayloadType;\n    }\n    return codec.payloadType;\n  }).join(' ') + '\\r\\n';\n\n  sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n  caps.codecs.forEach(codec => {\n    sdp += SDPUtils.writeRtpMap(codec);\n    sdp += SDPUtils.writeFmtp(codec);\n    sdp += SDPUtils.writeRtcpFb(codec);\n  });\n  let maxptime = 0;\n  caps.codecs.forEach(codec => {\n    if (codec.maxptime > maxptime) {\n      maxptime = codec.maxptime;\n    }\n  });\n  if (maxptime > 0) {\n    sdp += 'a=maxptime:' + maxptime + '\\r\\n';\n  }\n\n  if (caps.headerExtensions) {\n    caps.headerExtensions.forEach(extension => {\n      sdp += SDPUtils.writeExtmap(extension);\n    });\n  }\n  // FIXME: write fecMechanisms.\n  return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n  const encodingParameters = [];\n  const description = SDPUtils.parseRtpParameters(mediaSection);\n  const hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n  const hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n  // filter a=ssrc:... cname:, ignore PlanB-msid\n  const ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n    .map(line => SDPUtils.parseSsrcMedia(line))\n    .filter(parts => parts.attribute === 'cname');\n  const primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n  let secondarySsrc;\n\n  const flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n    .map(line => {\n      const parts = line.substring(17).split(' ');\n      return parts.map(part => parseInt(part, 10));\n    });\n  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n    secondarySsrc = flows[0][1];\n  }\n\n  description.codecs.forEach(codec => {\n    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n      let encParam = {\n        ssrc: primarySsrc,\n        codecPayloadType: parseInt(codec.parameters.apt, 10),\n      };\n      if (primarySsrc && secondarySsrc) {\n        encParam.rtx = {ssrc: secondarySsrc};\n      }\n      encodingParameters.push(encParam);\n      if (hasRed) {\n        encParam = JSON.parse(JSON.stringify(encParam));\n        encParam.fec = {\n          ssrc: primarySsrc,\n          mechanism: hasUlpfec ? 'red+ulpfec' : 'red',\n        };\n        encodingParameters.push(encParam);\n      }\n    }\n  });\n  if (encodingParameters.length === 0 && primarySsrc) {\n    encodingParameters.push({\n      ssrc: primarySsrc,\n    });\n  }\n\n  // we support both b=AS and b=TIAS but interpret AS as TIAS.\n  let bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n  if (bandwidth.length) {\n    if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substring(7), 10);\n    } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n      // use formula from JSEP to convert b=AS to TIAS value.\n      bandwidth = parseInt(bandwidth[0].substring(5), 10) * 1000 * 0.95\n          - (50 * 40 * 8);\n    } else {\n      bandwidth = undefined;\n    }\n    encodingParameters.forEach(params => {\n      params.maxBitrate = bandwidth;\n    });\n  }\n  return encodingParameters;\n};\n\n// parses http://draft.ortc.org/#rtcrtcpparameters*\nSDPUtils.parseRtcpParameters = function(mediaSection) {\n  const rtcpParameters = {};\n\n  // Gets the first SSRC. Note that with RTX there might be multiple\n  // SSRCs.\n  const remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n    .map(line => SDPUtils.parseSsrcMedia(line))\n    .filter(obj => obj.attribute === 'cname')[0];\n  if (remoteSsrc) {\n    rtcpParameters.cname = remoteSsrc.value;\n    rtcpParameters.ssrc = remoteSsrc.ssrc;\n  }\n\n  // Edge uses the compound attribute instead of reducedSize\n  // compound is !reducedSize\n  const rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');\n  rtcpParameters.reducedSize = rsize.length > 0;\n  rtcpParameters.compound = rsize.length === 0;\n\n  // parses the rtcp-mux attrіbute.\n  // Note that Edge does not support unmuxed RTCP.\n  const mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');\n  rtcpParameters.mux = mux.length > 0;\n\n  return rtcpParameters;\n};\n\nSDPUtils.writeRtcpParameters = function(rtcpParameters) {\n  let sdp = '';\n  if (rtcpParameters.reducedSize) {\n    sdp += 'a=rtcp-rsize\\r\\n';\n  }\n  if (rtcpParameters.mux) {\n    sdp += 'a=rtcp-mux\\r\\n';\n  }\n  if (rtcpParameters.ssrc !== undefined && rtcpParameters.cname) {\n    sdp += 'a=ssrc:' + rtcpParameters.ssrc +\n      ' cname:' + rtcpParameters.cname + '\\r\\n';\n  }\n  return sdp;\n};\n\n\n// parses either a=msid: or a=ssrc:... msid lines and returns\n// the id of the MediaStream and MediaStreamTrack.\nSDPUtils.parseMsid = function(mediaSection) {\n  let parts;\n  const spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');\n  if (spec.length === 1) {\n    parts = spec[0].substring(7).split(' ');\n    return {stream: parts[0], track: parts[1]};\n  }\n  const planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n    .map(line => SDPUtils.parseSsrcMedia(line))\n    .filter(msidParts => msidParts.attribute === 'msid');\n  if (planB.length > 0) {\n    parts = planB[0].value.split(' ');\n    return {stream: parts[0], track: parts[1]};\n  }\n};\n\n// SCTP\n// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back\n// to draft-ietf-mmusic-sctp-sdp-05\nSDPUtils.parseSctpDescription = function(mediaSection) {\n  const mline = SDPUtils.parseMLine(mediaSection);\n  const maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');\n  let maxMessageSize;\n  if (maxSizeLine.length > 0) {\n    maxMessageSize = parseInt(maxSizeLine[0].substring(19), 10);\n  }\n  if (isNaN(maxMessageSize)) {\n    maxMessageSize = 65536;\n  }\n  const sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');\n  if (sctpPort.length > 0) {\n    return {\n      port: parseInt(sctpPort[0].substring(12), 10),\n      protocol: mline.fmt,\n      maxMessageSize,\n    };\n  }\n  const sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');\n  if (sctpMapLines.length > 0) {\n    const parts = sctpMapLines[0]\n      .substring(10)\n      .split(' ');\n    return {\n      port: parseInt(parts[0], 10),\n      protocol: parts[1],\n      maxMessageSize,\n    };\n  }\n};\n\n// SCTP\n// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers\n// support by now receiving in this format, unless we originally parsed\n// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line\n// protocol of DTLS/SCTP -- without UDP/ or TCP/)\nSDPUtils.writeSctpDescription = function(media, sctp) {\n  let output = [];\n  if (media.protocol !== 'DTLS/SCTP') {\n    output = [\n      'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\\r\\n',\n      'c=IN IP4 0.0.0.0\\r\\n',\n      'a=sctp-port:' + sctp.port + '\\r\\n',\n    ];\n  } else {\n    output = [\n      'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\\r\\n',\n      'c=IN IP4 0.0.0.0\\r\\n',\n      'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\\r\\n',\n    ];\n  }\n  if (sctp.maxMessageSize !== undefined) {\n    output.push('a=max-message-size:' + sctp.maxMessageSize + '\\r\\n');\n  }\n  return output.join('');\n};\n\n// Generate a session ID for SDP.\n// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1\n// recommends using a cryptographically random +ve 64-bit value\n// but right now this should be acceptable and within the right range\nSDPUtils.generateSessionId = function() {\n  return Math.random().toString().substr(2, 22);\n};\n\n// Write boiler plate for start of SDP\n// sessId argument is optional - if not supplied it will\n// be generated randomly\n// sessVersion is optional and defaults to 2\n// sessUser is optional and defaults to 'thisisadapterortc'\nSDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {\n  let sessionId;\n  const version = sessVer !== undefined ? sessVer : 2;\n  if (sessId) {\n    sessionId = sessId;\n  } else {\n    sessionId = SDPUtils.generateSessionId();\n  }\n  const user = sessUser || 'thisisadapterortc';\n  // FIXME: sess-id should be an NTP timestamp.\n  return 'v=0\\r\\n' +\n      'o=' + user + ' ' + sessionId + ' ' + version +\n        ' IN IP4 127.0.0.1\\r\\n' +\n      's=-\\r\\n' +\n      't=0 0\\r\\n';\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n  const lines = SDPUtils.splitLines(mediaSection);\n  for (let i = 0; i < lines.length; i++) {\n    switch (lines[i]) {\n      case 'a=sendrecv':\n      case 'a=sendonly':\n      case 'a=recvonly':\n      case 'a=inactive':\n        return lines[i].substring(2);\n      default:\n        // FIXME: What should happen here?\n    }\n  }\n  if (sessionpart) {\n    return SDPUtils.getDirection(sessionpart);\n  }\n  return 'sendrecv';\n};\n\nSDPUtils.getKind = function(mediaSection) {\n  const lines = SDPUtils.splitLines(mediaSection);\n  const mline = lines[0].split(' ');\n  return mline[0].substring(2);\n};\n\nSDPUtils.isRejected = function(mediaSection) {\n  return mediaSection.split(' ', 2)[1] === '0';\n};\n\nSDPUtils.parseMLine = 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Each WebRTC connection to the Janus server will be\n * associated with a single handle. Once attached to the server, this handle will be given a unique ID which should be\n * used to associate it with future signalling messages.\n *\n * See https://janus.conf.meetecho.com/docs/rest.html#handles.\n **/\nfunction JanusPluginHandle(session) {\n  this.session = session;\n  this.id = undefined;\n}\n\n/** Attaches this handle to the Janus server and sets its ID. **/\nJanusPluginHandle.prototype.attach = function(plugin, loop_index) {\n  var payload = { plugin: plugin, loop_index: loop_index, \"force-bundle\": true, \"force-rtcp-mux\": true };\n  return this.session.send(\"attach\", payload).then(resp => {\n    this.id = resp.data.id;\n    return resp;\n  });\n};\n\n/** Detaches this handle. **/\nJanusPluginHandle.prototype.detach = function() {\n  return this.send(\"detach\");\n};\n\n/** Registers a callback to be fired upon the reception of any incoming Janus signals for this plugin handle with the\n * `janus` attribute equal to `ev`.\n **/\nJanusPluginHandle.prototype.on = function(ev, callback) {\n  return this.session.on(ev, signal => {\n    if (signal.sender == this.id) {\n      callback(signal);\n    }\n  });\n};\n\n/**\n * Sends a signal associated with this handle. 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Returns a promise that will\n * be resolved or rejected when a response to this signal is received, or when no response is received within the\n * session timeout.\n **/\nJanusPluginHandle.prototype.send = function(type, signal) {\n  return this.session.send(type, Object.assign({ handle_id: this.id }, signal));\n};\n\n/** Sends a plugin-specific message associated with this handle. **/\nJanusPluginHandle.prototype.sendMessage = function(body) {\n  return this.send(\"message\", { body: body });\n};\n\n/** Sends a JSEP offer or answer associated with this handle. **/\nJanusPluginHandle.prototype.sendJsep = function(jsep) {\n  return this.send(\"message\", { body: {}, jsep: jsep });\n};\n\n/** Sends an ICE trickle candidate associated with this handle. **/\nJanusPluginHandle.prototype.sendTrickle = function(candidate) {\n  return this.send(\"trickle\", { candidate: candidate });\n};\n\n/**\n * Represents a Janus session -- a Janus context from within which you can open multiple handles and connections. Once\n * created, this session will be given a unique ID which should be used to associate it with future signalling messages.\n *\n * See https://janus.conf.meetecho.com/docs/rest.html#sessions.\n **/\nfunction JanusSession(output, options) {\n  this.output = output;\n  this.id = undefined;\n  this.nextTxId = 0;\n  this.txns = {};\n  this.eventHandlers = {};\n  this.options = Object.assign({\n    verbose: false,\n    timeoutMs: 10000,\n    keepaliveMs: 30000\n  }, options);\n}\n\n/** Creates this session on the Janus server and sets its ID. **/\nJanusSession.prototype.create = function() {\n  return this.send(\"create\").then(resp => {\n    this.id = resp.data.id;\n    return resp;\n  });\n};\n\n/**\n * Destroys this session. Note that upon destruction, Janus will also close the signalling transport (if applicable) and\n * any open WebRTC connections.\n **/\nJanusSession.prototype.destroy = function() {\n  return this.send(\"destroy\").then((resp) => {\n    this.dispose();\n    return resp;\n  });\n};\n\n/**\n * Disposes of this session in a way such that no further incoming signalling messages will be processed.\n * Outstanding transactions will be rejected.\n **/\nJanusSession.prototype.dispose = function() {\n  this._killKeepalive();\n  this.eventHandlers = {};\n  for (var txId in this.txns) {\n    if (this.txns.hasOwnProperty(txId)) {\n      var txn = this.txns[txId];\n      clearTimeout(txn.timeout);\n      txn.reject(new Error(\"Janus session was disposed.\"));\n      delete this.txns[txId];\n    }\n  }\n};\n\n/**\n * Whether this signal represents an error, and the associated promise (if any) should be rejected.\n * Users should override this to handle any custom plugin-specific error conventions.\n **/\nJanusSession.prototype.isError = function(signal) {\n  return signal.janus === \"error\";\n};\n\n/** Registers a callback to be fired upon the reception of any incoming Janus signals for this session with the\n * `janus` attribute equal to `ev`.\n **/\nJanusSession.prototype.on = function(ev, callback) {\n  var handlers = this.eventHandlers[ev];\n  if (handlers == null) {\n    handlers = this.eventHandlers[ev] = [];\n  }\n  handlers.push(callback);\n};\n\n/**\n * Callback for receiving JSON signalling messages pertinent to this session. If the signals are responses to previously\n * sent signals, the promises for the outgoing signals will be resolved or rejected appropriately with this signal as an\n * argument.\n *\n * External callers should call this function every time a new signal arrives on the transport; for example, in a\n * WebSocket's `message` event, or when a new datum shows up in an HTTP long-polling response.\n **/\nJanusSession.prototype.receive = function(signal) {\n  if (this.options.verbose) {\n    this._logIncoming(signal);\n  }\n  if (signal.session_id != this.id) {\n    console.warn(\"Incorrect session ID received in Janus signalling message: was \" + signal.session_id + \", expected \" + this.id + \".\");\n  }\n\n  var responseType = signal.janus;\n  var handlers = this.eventHandlers[responseType];\n  if (handlers != null) {\n    for (var i = 0; i < handlers.length; i++) {\n      handlers[i](signal);\n    }\n  }\n\n  if (signal.transaction != null) {\n    var txn = this.txns[signal.transaction];\n    if (txn == null) {\n      // this is a response to a transaction that wasn't caused via JanusSession.send, or a plugin replied twice to a\n      // single request, or the session was disposed, or something else that isn't under our purview; that's fine\n      return;\n    }\n\n    if (responseType === \"ack\" && txn.type == \"message\") {\n      // this is an ack of an asynchronously-processed plugin request, we should wait to resolve the promise until the\n      // actual response comes in\n      return;\n    }\n\n    clearTimeout(txn.timeout);\n\n    delete this.txns[signal.transaction];\n    (this.isError(signal) ? txn.reject : txn.resolve)(signal);\n  }\n};\n\n/**\n * Sends a signal associated with this session, beginning a new transaction. Returns a promise that will be resolved or\n * rejected when a response is received in the same transaction, or when no response is received within the session\n * timeout.\n **/\nJanusSession.prototype.send = function(type, signal) {\n  signal = Object.assign({ transaction: (this.nextTxId++).toString() }, signal);\n  return new Promise((resolve, reject) => {\n    var timeout = null;\n    if (this.options.timeoutMs) {\n      timeout = setTimeout(() => {\n        delete this.txns[signal.transaction];\n        reject(new Error(\"Signalling transaction with txid \" + signal.transaction + \" timed out.\"));\n      }, this.options.timeoutMs);\n    }\n    this.txns[signal.transaction] = { resolve: resolve, reject: reject, timeout: timeout, type: type };\n    this._transmit(type, signal);\n  });\n};\n\nJanusSession.prototype._transmit = function(type, signal) {\n  signal = Object.assign({ janus: type }, signal);\n\n  if (this.id != null) { // this.id is undefined in the special case when we're sending the session create message\n    signal = Object.assign({ session_id: this.id }, signal);\n  }\n\n  if (this.options.verbose) {\n    this._logOutgoing(signal);\n  }\n\n  this.output(JSON.stringify(signal));\n  this._resetKeepalive();\n};\n\nJanusSession.prototype._logOutgoing = function(signal) {\n  var kind = signal.janus;\n  if (kind === \"message\" && signal.jsep) {\n    kind = signal.jsep.type;\n  }\n  var message = \"> Outgoing Janus \" + (kind || \"signal\") + \" (#\" + signal.transaction + \"): \";\n  console.debug(\"%c\" + message, \"color: #040\", signal);\n};\n\nJanusSession.prototype._logIncoming = function(signal) {\n  var kind = signal.janus;\n  var message = signal.transaction ?\n      \"< Incoming Janus \" + (kind || \"signal\") + \" (#\" + signal.transaction + \"): \" :\n      \"< Incoming Janus \" + (kind || \"signal\") + \": \";\n  console.debug(\"%c\" + message, \"color: #004\", signal);\n};\n\nJanusSession.prototype._sendKeepalive = function() {\n  return this.send(\"keepalive\");\n};\n\nJanusSession.prototype._killKeepalive = function() {\n  clearTimeout(this.keepaliveTimeout);\n};\n\nJanusSession.prototype._resetKeepalive = function() {\n  this._killKeepalive();\n  if (this.options.keepaliveMs) {\n    this.keepaliveTimeout = setTimeout(() => {\n      this._sendKeepalive().catch(e => console.error(\"Error received from keepalive: \", e));\n    }, this.options.keepaliveMs);\n  }\n};\n\nmodule.exports = {\n  JanusPluginHandle,\n  JanusSession\n};\n","/* global NAF */\nvar mj = require(\"@networked-aframe/minijanus\");\nmj.JanusSession.prototype.sendOriginal = mj.JanusSession.prototype.send;\nmj.JanusSession.prototype.send = function(type, signal) {\n  return this.sendOriginal(type, signal).catch((e) => {\n    if (e.message && e.message.indexOf(\"timed out\") > -1) {\n      console.error(\"web socket timed out\");\n      NAF.connection.adapter.reconnect();\n    } else {\n      throw(e);\n    }\n  });\n}\n\nvar sdpUtils = require(\"sdp\");\nvar debug = require(\"debug\")(\"naf-janus-adapter:debug\");\nvar warn = require(\"debug\")(\"naf-janus-adapter:warn\");\nvar error = require(\"debug\")(\"naf-janus-adapter:error\");\nvar isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);\n\nconst SUBSCRIBE_TIMEOUT_MS = 15000;\n\nconst AVAILABLE_OCCUPANTS_THRESHOLD = 5;\nconst MAX_SUBSCRIBE_DELAY = 5000;\n\nfunction randomDelay(min, max) {\n  return new Promise(resolve => {\n    const delay = Math.random() * (max - min) + min;\n    setTimeout(resolve, delay);\n  });\n}\n\nfunction debounce(fn) {\n  var curr = Promise.resolve();\n  return function() {\n    var args = Array.prototype.slice.call(arguments);\n    curr = curr.then(_ => fn.apply(this, args));\n  };\n}\n\nfunction randomUint() {\n  return Math.floor(Math.random() * Number.MAX_SAFE_INTEGER);\n}\n\nfunction untilDataChannelOpen(dataChannel) {\n  return new Promise((resolve, reject) => {\n    if (dataChannel.readyState === \"open\") {\n      resolve();\n    } else {\n      let resolver, rejector;\n\n      const clear = () => {\n        dataChannel.removeEventListener(\"open\", resolver);\n        dataChannel.removeEventListener(\"error\", rejector);\n      };\n\n      resolver = () => {\n        clear();\n        resolve();\n      };\n      rejector = () => {\n        clear();\n        reject();\n      };\n\n      dataChannel.addEventListener(\"open\", resolver);\n      dataChannel.addEventListener(\"error\", rejector);\n    }\n  });\n}\n\nconst isH264VideoSupported = (() => {\n  const video = document.createElement(\"video\");\n  return video.canPlayType('video/mp4; codecs=\"avc1.42E01E, mp4a.40.2\"') !== \"\";\n})();\n\nconst OPUS_PARAMETERS = {\n  // indicates that we want to enable DTX to elide silence packets\n  usedtx: 1,\n  // indicates that we prefer to receive mono audio (important for voip profile)\n  stereo: 0,\n  // indicates that we prefer to send mono audio (important for voip profile)\n  \"sprop-stereo\": 0\n};\n\nconst DEFAULT_PEER_CONNECTION_CONFIG = {\n  iceServers: [{ urls: \"stun:stun1.l.google.com:19302\" }, { urls: \"stun:stun2.l.google.com:19302\" }]\n};\n\nconst WS_NORMAL_CLOSURE = 1000;\n\nclass JanusAdapter {\n  constructor() {\n    this.room = null;\n    // We expect the consumer to set a client id before connecting.\n    this.clientId = null;\n    this.joinToken = null;\n\n    this.serverUrl = null;\n    this.webRtcOptions = {};\n    this.peerConnectionConfig = null;\n    this.ws = null;\n    this.session = null;\n    this.reliableTransport = \"datachannel\";\n    this.unreliableTransport = \"datachannel\";\n\n    // In the event the server restarts and all clients lose connection, reconnect with\n    // some random jitter added to prevent simultaneous reconnection requests.\n    this.initialReconnectionDelay = 1000 * Math.random();\n    this.reconnectionDelay = this.initialReconnectionDelay;\n    this.reconnectionTimeout = null;\n    this.maxReconnectionAttempts = 10;\n    this.reconnectionAttempts = 0;\n    this.isReconnecting = false;\n\n    this.publisher = null;\n    this.occupantIds = [];\n    this.occupants = {};\n    this.mediaStreams = {};\n    this.localMediaStream = null;\n    this.pendingMediaRequests = new Map();\n\n    this.pendingOccupants = new Set();\n    this.availableOccupants = [];\n    this.requestedOccupants = null;\n\n    this.blockedClients = new Map();\n    this.frozenUpdates = new Map();\n\n    this.timeOffsets = [];\n    this.serverTimeRequests = 0;\n    this.avgTimeOffset = 0;\n\n    this.onWebsocketOpen = this.onWebsocketOpen.bind(this);\n    this.onWebsocketClose = this.onWebsocketClose.bind(this);\n    this.onWebsocketMessage = this.onWebsocketMessage.bind(this);\n    this.onDataChannelMessage = this.onDataChannelMessage.bind(this);\n    this.onData = this.onData.bind(this);\n  }\n\n  setServerUrl(url) {\n    this.serverUrl = url;\n  }\n\n  setApp(app) {}\n\n  setRoom(roomName) {\n    this.room = roomName;\n  }\n\n  setJoinToken(joinToken) {\n    this.joinToken = joinToken;\n  }\n\n  setClientId(clientId) {\n    this.clientId = clientId;\n  }\n\n  setWebRtcOptions(options) {\n    this.webRtcOptions = options;\n  }\n\n  setPeerConnectionConfig(peerConnectionConfig) {\n    this.peerConnectionConfig = peerConnectionConfig;\n  }\n\n  setServerConnectListeners(successListener, failureListener) {\n    this.connectSuccess = successListener;\n    this.connectFailure = failureListener;\n  }\n\n  setRoomOccupantListener(occupantListener) {\n    this.onOccupantsChanged = occupantListener;\n  }\n\n  setDataChannelListeners(openListener, closedListener, messageListener) {\n    this.onOccupantConnected = openListener;\n    this.onOccupantDisconnected = closedListener;\n    this.onOccupantMessage = messageListener;\n  }\n\n  setReconnectionListeners(reconnectingListener, reconnectedListener, reconnectionErrorListener) {\n    // onReconnecting is called with the number of milliseconds until the next reconnection attempt\n    this.onReconnecting = reconnectingListener;\n    // onReconnected is called when the connection has been reestablished\n    this.onReconnected = reconnectedListener;\n    // onReconnectionError is called with an error when maxReconnectionAttempts has been reached\n    this.onReconnectionError = reconnectionErrorListener;\n  }\n\n  setEventLoops(loops) {\n    this.loops = loops;\n  }\n\n  connect() {\n    if (this.serverUrl === '/') {\n      this.serverUrl = '/janus';\n    }\n    if (this.serverUrl === '/janus') {\n      if (location.protocol === 'https:') {\n        this.serverUrl = 'wss://' + location.host + '/janus';\n      } else {\n        this.serverUrl = 'ws://' + location.host + '/janus';\n      }\n    }\n    debug(`connecting to ${this.serverUrl}`);\n\n    const websocketConnection = new Promise((resolve, reject) => {\n      this.ws = new WebSocket(this.serverUrl, \"janus-protocol\");\n\n      this.session = new mj.JanusSession(this.ws.send.bind(this.ws), { timeoutMs: 40000 });\n\n      this.websocketConnectionPromise = {};\n      this.websocketConnectionPromise.resolve = resolve;\n      this.websocketConnectionPromise.reject = reject;\n\n      this.ws.addEventListener(\"close\", this.onWebsocketClose);\n      this.ws.addEventListener(\"message\", this.onWebsocketMessage);\n\n      this.wsOnOpen = () => {\n        this.ws.removeEventListener(\"open\", this.wsOnOpen);\n        this.onWebsocketOpen()\n          .then(resolve)\n          .catch(reject);\n      };\n\n      this.ws.addEventListener(\"open\", this.wsOnOpen);\n    });\n\n    return Promise.all([websocketConnection, this.updateTimeOffset()]);\n  }\n\n  disconnect() {\n    debug(`disconnecting`);\n\n    clearTimeout(this.reconnectionTimeout);\n\n    this.removeAllOccupants();\n\n    if (this.publisher) {\n      // Close the publisher peer connection. Which also detaches the plugin handle.\n      this.publisher.conn.close();\n      this.publisher = null;\n    }\n\n    if (this.session) {\n      this.session.dispose();\n      this.session = null;\n    }\n\n    if (this.ws) {\n      this.ws.removeEventListener(\"open\", this.wsOnOpen);\n      this.ws.removeEventListener(\"close\", this.onWebsocketClose);\n      this.ws.removeEventListener(\"message\", this.onWebsocketMessage);\n      this.ws.close();\n      this.ws = null;\n    }\n\n    // Now that all RTCPeerConnection closed, be sure to not call\n    // reconnect() again via performDelayedReconnect if previous\n    // RTCPeerConnection was in the failed state.\n    if (this.delayedReconnectTimeout) {\n      clearTimeout(this.delayedReconnectTimeout);\n      this.delayedReconnectTimeout = null;\n    }\n  }\n\n  isDisconnected() {\n    return this.ws === null;\n  }\n\n  async onWebsocketOpen() {\n    // Create the Janus Session\n    await this.session.create();\n\n    // Attach the SFU Plugin and create a RTCPeerConnection for the publisher.\n    // The publisher sends audio and opens two bidirectional data channels.\n    // One reliable datachannel and one unreliable.\n    this.publisher = await this.createPublisher();\n\n    // Call the naf connectSuccess callback before we start receiving WebRTC messages.\n    this.connectSuccess(this.clientId);\n\n    for (let i = 0; i < this.publisher.initialOccupants.length; i++) {\n      const occupantId = this.publisher.initialOccupants[i];\n      if (occupantId === this.clientId) continue; // Happens during non-graceful reconnects due to zombie sessions\n      this.addAvailableOccupant(occupantId);\n    }\n\n    this.syncOccupants();\n  }\n\n  onWebsocketClose(event) {\n    // The connection was closed successfully. Don't try to reconnect.\n    if (event.code === WS_NORMAL_CLOSURE) {\n      return;\n    }\n\n    this.websocketConnectionPromise.reject(event);\n\n    if (!this.isReconnecting) {\n      this.isReconnecting = true;\n      console.warn(\"Janus websocket closed unexpectedly.\");\n      if (this.onReconnecting) {\n        this.onReconnecting(this.reconnectionDelay);\n      }\n\n      this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay);\n    }\n  }\n\n  reconnect() {\n    // Dispose of all networked entities and other resources tied to the session.\n    this.disconnect();\n\n    this.connect()\n      .then(() => {\n        this.reconnectionDelay = this.initialReconnectionDelay;\n        this.reconnectionAttempts = 0;\n        this.isReconnecting = false;\n\n        if (this.onReconnected) {\n          this.onReconnected();\n        }\n      })\n      .catch(error => {\n        this.reconnectionDelay += 1000;\n        this.reconnectionAttempts++;\n\n        if (this.reconnectionAttempts > this.maxReconnectionAttempts) {\n          const error = new Error(\n            \"Connection could not be reestablished, exceeded maximum number of reconnection attempts.\"\n          );\n          if (this.onReconnectionError) {\n            return this.onReconnectionError(error);\n          } else {\n            console.warn(error);\n            return;\n          }\n        }\n\n        console.warn(\"Error during reconnect, retrying.\");\n        console.warn(error);\n\n        if (this.onReconnecting) {\n          this.onReconnecting(this.reconnectionDelay);\n        }\n\n        this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay);\n      });\n  }\n\n  performDelayedReconnect() {\n    if (this.delayedReconnectTimeout) {\n      clearTimeout(this.delayedReconnectTimeout);\n    }\n\n    this.delayedReconnectTimeout = setTimeout(() => {\n      this.delayedReconnectTimeout = null;\n      this.reconnect();\n    }, 10000);\n  }\n\n  onWebsocketMessage(event) {\n    this.session.receive(JSON.parse(event.data));\n  }\n\n  addAvailableOccupant(occupantId) {\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      this.availableOccupants.push(occupantId);\n    }\n  }\n\n  removeAvailableOccupant(occupantId) {\n    const idx = this.availableOccupants.indexOf(occupantId);\n    if (idx !== -1) {\n      this.availableOccupants.splice(idx, 1);\n    }\n  }\n\n  syncOccupants(requestedOccupants) {\n    if (requestedOccupants) {\n      this.requestedOccupants = requestedOccupants;\n    }\n\n    if (!this.requestedOccupants) {\n      return;\n    }\n\n    // Add any requested, available, and non-pending occupants.\n    for (let i = 0; i < this.requestedOccupants.length; i++) {\n      const occupantId = this.requestedOccupants[i];\n      if (!this.occupants[occupantId] && this.availableOccupants.indexOf(occupantId) !== -1 && !this.pendingOccupants.has(occupantId)) {\n        this.addOccupant(occupantId);\n      }\n    }\n\n    // Remove any unrequested and currently added occupants.\n    for (let j = 0; j < this.availableOccupants.length; j++) {\n      const occupantId = this.availableOccupants[j];\n      if (this.occupants[occupantId] && this.requestedOccupants.indexOf(occupantId) === -1) {\n        this.removeOccupant(occupantId);\n      }\n    }\n\n    // Call the Networked AFrame callbacks for the updated occupants list.\n    this.onOccupantsChanged(this.occupants);\n  }\n\n  async addOccupant(occupantId) {\n    this.pendingOccupants.add(occupantId);\n    \n    const availableOccupantsCount = this.availableOccupants.length;\n    if (availableOccupantsCount > AVAILABLE_OCCUPANTS_THRESHOLD) {\n      await randomDelay(0, MAX_SUBSCRIBE_DELAY);\n    }\n  \n    const subscriber = await this.createSubscriber(occupantId);\n    if (subscriber) {\n      if(!this.pendingOccupants.has(occupantId)) {\n        subscriber.conn.close();\n      } else {\n        this.pendingOccupants.delete(occupantId);\n        this.occupantIds.push(occupantId);\n        this.occupants[occupantId] = subscriber;\n\n        this.setMediaStream(occupantId, subscriber.mediaStream);\n\n        // Call the Networked AFrame callbacks for the new occupant.\n        this.onOccupantConnected(occupantId);\n      }\n    }\n  }\n\n  removeAllOccupants() {\n    this.pendingOccupants.clear();\n    for (let i = this.occupantIds.length - 1; i >= 0; i--) {\n      this.removeOccupant(this.occupantIds[i]);\n    }\n  }\n\n  removeOccupant(occupantId) {\n    this.pendingOccupants.delete(occupantId);\n    \n    if (this.occupants[occupantId]) {\n      // Close the subscriber peer connection. Which also detaches the plugin handle.\n      this.occupants[occupantId].conn.close();\n      delete this.occupants[occupantId];\n      \n      this.occupantIds.splice(this.occupantIds.indexOf(occupantId), 1);\n    }\n\n    if (this.mediaStreams[occupantId]) {\n      delete this.mediaStreams[occupantId];\n    }\n\n    if (this.pendingMediaRequests.has(occupantId)) {\n      const msg = \"The user disconnected before the media stream was resolved.\";\n      this.pendingMediaRequests.get(occupantId).audio.reject(msg);\n      this.pendingMediaRequests.get(occupantId).video.reject(msg);\n      this.pendingMediaRequests.delete(occupantId);\n    }\n\n    // Call the Networked AFrame callbacks for the removed occupant.\n    this.onOccupantDisconnected(occupantId);\n  }\n\n  associate(conn, handle) {\n    conn.addEventListener(\"icecandidate\", ev => {\n      handle.sendTrickle(ev.candidate || null).catch(e => error(\"Error trickling ICE: %o\", e));\n    });\n    conn.addEventListener(\"iceconnectionstatechange\", ev => {\n      if (conn.iceConnectionState === \"connected\") {\n        console.log(\"ICE state changed to connected\");\n      }\n      if (conn.iceConnectionState === \"disconnected\") {\n        console.warn(\"ICE state changed to disconnected\");\n      }\n      if (conn.iceConnectionState === \"failed\") {\n        console.warn(\"ICE failure detected. Reconnecting in 10s.\");\n        this.performDelayedReconnect();\n      }\n    })\n\n    // we have to debounce these because janus gets angry if you send it a new SDP before\n    // it's finished processing an existing SDP. in actuality, it seems like this is maybe\n    // too liberal and we need to wait some amount of time after an offer before sending another,\n    // but we don't currently know any good way of detecting exactly how long :(\n    conn.addEventListener(\n      \"negotiationneeded\",\n      debounce(ev => {\n        debug(\"Sending new offer for handle: %o\", handle);\n        var offer = conn.createOffer().then(this.configurePublisherSdp).then(this.fixSafariIceUFrag);\n        var local = offer.then(o => conn.setLocalDescription(o));\n        var remote = offer;\n\n        remote = remote\n          .then(this.fixSafariIceUFrag)\n          .then(j => handle.sendJsep(j))\n          .then(r => conn.setRemoteDescription(r.jsep));\n        return Promise.all([local, remote]).catch(e => error(\"Error negotiating offer: %o\", e));\n      })\n    );\n    handle.on(\n      \"event\",\n      debounce(ev => {\n        var jsep = ev.jsep;\n        if (jsep && jsep.type == \"offer\") {\n          debug(\"Accepting new offer for handle: %o\", handle);\n          var answer = conn\n            .setRemoteDescription(this.configureSubscriberSdp(jsep))\n            .then(_ => conn.createAnswer())\n            .then(this.fixSafariIceUFrag);\n          var local = answer.then(a => conn.setLocalDescription(a));\n          var remote = answer.then(j => handle.sendJsep(j));\n          return Promise.all([local, remote]).catch(e => error(\"Error negotiating answer: %o\", e));\n        } else {\n          // some other kind of event, nothing to do\n          return null;\n        }\n      })\n    );\n  }\n\n  async createPublisher() {\n    var handle = new mj.JanusPluginHandle(this.session);\n    var conn = new RTCPeerConnection(this.peerConnectionConfig || DEFAULT_PEER_CONNECTION_CONFIG);\n\n    debug(\"pub waiting for sfu\");\n    await handle.attach(\"janus.plugin.sfu\", this.loops && this.clientId ? parseInt(this.clientId) % this.loops : undefined);\n\n    this.associate(conn, handle);\n\n    debug(\"pub waiting for data channels & webrtcup\");\n    var webrtcup = new Promise(resolve => handle.on(\"webrtcup\", resolve));\n\n    // Unreliable datachannel: sending and receiving component updates.\n    // Reliable datachannel: sending and recieving entity instantiations.\n    var reliableChannel = conn.createDataChannel(\"reliable\", { ordered: true });\n    var unreliableChannel = conn.createDataChannel(\"unreliable\", {\n      ordered: false,\n      maxRetransmits: 0\n    });\n\n    reliableChannel.addEventListener(\"message\", e => this.onDataChannelMessage(e, \"janus-reliable\"));\n    unreliableChannel.addEventListener(\"message\", e => this.onDataChannelMessage(e, \"janus-unreliable\"));\n\n    await webrtcup;\n    await untilDataChannelOpen(reliableChannel);\n    await untilDataChannelOpen(unreliableChannel);\n\n    // doing this here is sort of a hack around chrome renegotiation weirdness --\n    // if we do it prior to webrtcup, chrome on gear VR will sometimes put a\n    // renegotiation offer in flight while the first offer was still being\n    // processed by janus. we should find some more principled way to figure out\n    // when janus is done in the future.\n    if (this.localMediaStream) {\n      this.localMediaStream.getTracks().forEach(track => {\n        conn.addTrack(track, this.localMediaStream);\n      });\n    }\n\n    // Handle all of the join and leave events.\n    handle.on(\"event\", ev => {\n      var data = ev.plugindata.data;\n      if (data.event == \"join\" && data.room_id == this.room) {\n        if (this.delayedReconnectTimeout) {\n          // Don't create a new RTCPeerConnection, all RTCPeerConnection will be closed in less than 10s.\n          return;\n        }\n        this.addAvailableOccupant(data.user_id);\n        this.syncOccupants();\n      } else if (data.event == \"leave\" && data.room_id == this.room) {\n        this.removeAvailableOccupant(data.user_id);\n        this.removeOccupant(data.user_id);\n      } else if (data.event == \"blocked\") {\n        document.body.dispatchEvent(new CustomEvent(\"blocked\", { detail: { clientId: data.by } }));\n      } else if (data.event == \"unblocked\") {\n        document.body.dispatchEvent(new CustomEvent(\"unblocked\", { detail: { clientId: data.by } }));\n      } else if (data.event === \"data\") {\n        this.onData(JSON.parse(data.body), \"janus-event\");\n      }\n    });\n\n    debug(\"pub waiting for join\");\n\n    // Send join message to janus. Listen for join/leave messages. Automatically subscribe to all users' WebRTC data.\n    var message = await this.sendJoin(handle, {\n      notifications: true,\n      data: true\n    });\n\n    if (!message.plugindata.data.success) {\n      const err = message.plugindata.data.error;\n      console.error(err);\n      // We may get here because of an expired JWT.\n      // Close the connection ourself otherwise janus will close it after\n      // session_timeout because we didn't send any keepalive and this will\n      // trigger a delayed reconnect because of the iceconnectionstatechange\n      // listener for failure state.\n      // Even if the app code calls disconnect in case of error, disconnect\n      // won't close the peer connection because this.publisher is not set.\n      conn.close();\n      throw err;\n    }\n\n    var initialOccupants = message.plugindata.data.response.users[this.room] || [];\n\n    if (initialOccupants.includes(this.clientId)) {\n      console.warn(\"Janus still has previous session for this client. Reconnecting in 10s.\");\n      this.performDelayedReconnect();\n    }\n\n    debug(\"publisher ready\");\n    return {\n      handle,\n      initialOccupants,\n      reliableChannel,\n      unreliableChannel,\n      conn\n    };\n  }\n\n  configurePublisherSdp(jsep) {\n    jsep.sdp = jsep.sdp.replace(/a=fmtp:(109|111).*\\r\\n/g, (line, pt) => {\n      const parameters = Object.assign(sdpUtils.parseFmtp(line), OPUS_PARAMETERS);\n      return sdpUtils.writeFmtp({ payloadType: pt, parameters: parameters });\n    });\n    return jsep;\n  }\n\n  configureSubscriberSdp(jsep) {\n    // todo: consider cleaning up these hacks to use sdputils\n    if (!isH264VideoSupported) {\n      if (navigator.userAgent.indexOf(\"HeadlessChrome\") !== -1) {\n        // HeadlessChrome (e.g. puppeteer) doesn't support webrtc video streams, so we remove those lines from the SDP.\n        jsep.sdp = jsep.sdp.replace(/m=video[^]*m=/, \"m=\");\n      }\n    }\n\n    // TODO: Hack to get video working on Chrome for Android. https://groups.google.com/forum/#!topic/mozilla.dev.media/Ye29vuMTpo8\n    if (navigator.userAgent.indexOf(\"Android\") === -1) {\n      jsep.sdp = jsep.sdp.replace(\n        \"a=rtcp-fb:107 goog-remb\\r\\n\",\n        \"a=rtcp-fb:107 goog-remb\\r\\na=rtcp-fb:107 transport-cc\\r\\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\\r\\n\"\n      );\n    } else {\n      jsep.sdp = jsep.sdp.replace(\n        \"a=rtcp-fb:107 goog-remb\\r\\n\",\n        \"a=rtcp-fb:107 goog-remb\\r\\na=rtcp-fb:107 transport-cc\\r\\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\\r\\n\"\n      );\n    }\n    return jsep;\n  }\n\n  async fixSafariIceUFrag(jsep) {\n    // Safari produces a \\n instead of an \\r\\n for the ice-ufrag. See https://github.com/meetecho/janus-gateway/issues/1818\n    jsep.sdp = jsep.sdp.replace(/[^\\r]\\na=ice-ufrag/g, \"\\r\\na=ice-ufrag\");\n    return jsep\n  }\n\n  async createSubscriber(occupantId, maxRetries = 5) {\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      console.warn(occupantId + \": cancelled occupant connection, occupant left before subscription negotation.\");\n      return null;\n    }\n\n    var handle = new mj.JanusPluginHandle(this.session);\n    var conn = new RTCPeerConnection(this.peerConnectionConfig || DEFAULT_PEER_CONNECTION_CONFIG);\n\n    debug(occupantId + \": sub waiting for sfu\");\n    await handle.attach(\"janus.plugin.sfu\", this.loops ? parseInt(occupantId) % this.loops : undefined);\n\n    this.associate(conn, handle);\n\n    debug(occupantId + \": sub waiting for join\");\n\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      conn.close();\n      console.warn(occupantId + \": cancelled occupant connection, occupant left after attach\");\n      return null;\n    }\n\n    let webrtcFailed = false;\n\n    const webrtcup = new Promise(resolve => {\n      const leftInterval = setInterval(() => {\n        if (this.availableOccupants.indexOf(occupantId) === -1) {\n          clearInterval(leftInterval);\n          resolve();\n        }\n      }, 1000);\n\n      const timeout = setTimeout(() => {\n        clearInterval(leftInterval);\n        webrtcFailed = true;\n        resolve();\n      }, SUBSCRIBE_TIMEOUT_MS);\n\n      handle.on(\"webrtcup\", () => {\n        clearTimeout(timeout);\n        clearInterval(leftInterval);\n        resolve();\n      });\n    });\n\n    // Send join message to janus. Don't listen for join/leave messages. Subscribe to the occupant's media.\n    // Janus should send us an offer for this occupant's media in response to this.\n    await this.sendJoin(handle, { media: occupantId });\n\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      conn.close();\n      console.warn(occupantId + \": cancelled occupant connection, occupant left after join\");\n      return null;\n    }\n\n    debug(occupantId + \": sub waiting for webrtcup\");\n    await webrtcup;\n\n    if (this.availableOccupants.indexOf(occupantId) === -1) {\n      conn.close();\n      console.warn(occupantId + \": cancel occupant connection, occupant left during or after webrtcup\");\n      return null;\n    }\n\n    if (webrtcFailed) {\n      conn.close();\n      if (maxRetries > 0) {\n        console.warn(occupantId + \": webrtc up timed out, retrying\");\n        return this.createSubscriber(occupantId, maxRetries - 1);\n      } else {\n        console.warn(occupantId + \": webrtc up timed out\");\n        return null;\n      }\n    }\n\n    if (isSafari && !this._iOSHackDelayedInitialPeer) {\n      // HACK: the first peer on Safari during page load can fail to work if we don't\n      // wait some time before continuing here. See: https://github.com/mozilla/hubs/pull/1692\n      await (new Promise((resolve) => setTimeout(resolve, 3000)));\n      this._iOSHackDelayedInitialPeer = true;\n    }\n\n    var mediaStream = new MediaStream();\n    var receivers = conn.getReceivers();\n    receivers.forEach(receiver => {\n      if (receiver.track) {\n        mediaStream.addTrack(receiver.track);\n      }\n    });\n    if (mediaStream.getTracks().length === 0) {\n      mediaStream = null;\n    }\n\n    debug(occupantId + \": subscriber ready\");\n    return {\n      handle,\n      mediaStream,\n      conn\n    };\n  }\n\n  sendJoin(handle, subscribe) {\n    return handle.sendMessage({\n      kind: \"join\",\n      room_id: this.room,\n      user_id: this.clientId,\n      subscribe,\n      token: this.joinToken\n    });\n  }\n\n  toggleFreeze() {\n    if (this.frozen) {\n      this.unfreeze();\n    } else {\n      this.freeze();\n    }\n  }\n\n  freeze() {\n    this.frozen = true;\n  }\n\n  unfreeze() {\n    this.frozen = false;\n    this.flushPendingUpdates();\n  }\n\n  dataForUpdateMultiMessage(networkId, message) {\n    // \"d\" is an array of entity datas, where each item in the array represents a unique entity and contains\n    // metadata for the entity, and an array of components that have been updated on the entity.\n    // This method finds the data corresponding to the given networkId.\n    for (let i = 0, l = message.data.d.length; i < l; i++) {\n      const data = message.data.d[i];\n\n      if (data.networkId === networkId) {\n        return data;\n      }\n    }\n\n    return null;\n  }\n\n  getPendingData(networkId, message) {\n    if (!message) return null;\n\n    let data = message.dataType === \"um\" ? this.dataForUpdateMultiMessage(networkId, message) : message.data;\n\n    // Ignore messages relating to users who have disconnected since freezing, their entities\n    // will have aleady been removed by NAF.\n    // Note that delete messages have no \"owner\" so we have to check for that as well.\n    if (data.owner && !this.occupants[data.owner]) return null;\n\n    // Ignore messages from users that we may have blocked while frozen.\n    if (data.owner && this.blockedClients.has(data.owner)) return null;\n\n    return data\n  }\n\n  // Used externally\n  getPendingDataForNetworkId(networkId) {\n    return this.getPendingData(networkId, this.frozenUpdates.get(networkId));\n  }\n\n  flushPendingUpdates() {\n    for (const [networkId, message] of this.frozenUpdates) {\n      let data = this.getPendingData(networkId, message);\n      if (!data) continue;\n\n      // Override the data type on \"um\" messages types, since we extract entity updates from \"um\" messages into\n      // individual frozenUpdates in storeSingleMessage.\n      const dataType = message.dataType === \"um\" ? \"u\" : message.dataType;\n\n      this.onOccupantMessage(null, dataType, data, message.source);\n    }\n    this.frozenUpdates.clear();\n  }\n\n  storeMessage(message) {\n    if (message.dataType === \"um\") { // UpdateMulti\n      for (let i = 0, l = message.data.d.length; i < l; i++) {\n        this.storeSingleMessage(message, i);\n      }\n    } else {\n      this.storeSingleMessage(message);\n    }\n  }\n\n  storeSingleMessage(message, index) {\n    const data = index !== undefined ? message.data.d[index] : message.data;\n    const dataType = message.dataType;\n    const source = message.source;\n\n    const networkId = data.networkId;\n\n    if (!this.frozenUpdates.has(networkId)) {\n      this.frozenUpdates.set(networkId, message);\n    } else {\n      const storedMessage = this.frozenUpdates.get(networkId);\n      const storedData = storedMessage.dataType === \"um\" ? this.dataForUpdateMultiMessage(networkId, storedMessage) : storedMessage.data;\n\n      // Avoid updating components if the entity data received did not come from the current owner.\n      const isOutdatedMessage = data.lastOwnerTime < storedData.lastOwnerTime;\n      const isContemporaneousMessage = data.lastOwnerTime === storedData.lastOwnerTime;\n      if (isOutdatedMessage || (isContemporaneousMessage && storedData.owner > data.owner)) {\n        return;\n      }\n\n      if (dataType === \"r\") {\n        const createdWhileFrozen = storedData && storedData.isFirstSync;\n        if (createdWhileFrozen) {\n          // If the entity was created and deleted while frozen, don't bother conveying anything to the consumer.\n          this.frozenUpdates.delete(networkId);\n        } else {\n          // Delete messages override any other messages for this entity\n          this.frozenUpdates.set(networkId, message);\n        }\n      } else {\n        // merge in component updates\n        if (storedData.components && data.components) {\n          Object.assign(storedData.components, data.components);\n        }\n      }\n    }\n  }\n\n  onDataChannelMessage(e, source) {\n    this.onData(JSON.parse(e.data), source);\n  }\n\n  onData(message, source) {\n    if (debug.enabled) {\n      debug(`DC in: ${message}`);\n    }\n\n    if (!message.dataType) return;\n\n    message.source = source;\n\n    if (this.frozen) {\n      this.storeMessage(message);\n    } else {\n      this.onOccupantMessage(null, message.dataType, message.data, message.source);\n    }\n  }\n\n  shouldStartConnectionTo(client) {\n    return true;\n  }\n\n  startStreamConnection(client) {}\n\n  closeStreamConnection(client) {}\n\n  getConnectStatus(clientId) {\n    return this.occupants[clientId] ? NAF.adapters.IS_CONNECTED : NAF.adapters.NOT_CONNECTED;\n  }\n\n  async updateTimeOffset() {\n    if (this.isDisconnected()) return;\n\n    const clientSentTime = Date.now();\n\n    const res = await fetch(document.location.href, {\n      method: \"HEAD\",\n      cache: \"no-cache\"\n    });\n\n    const precision = 1000;\n    const serverReceivedTime = new Date(res.headers.get(\"Date\")).getTime() + precision / 2;\n    const clientReceivedTime = Date.now();\n    const serverTime = serverReceivedTime + (clientReceivedTime - clientSentTime) / 2;\n    const timeOffset = serverTime - clientReceivedTime;\n\n    this.serverTimeRequests++;\n\n    if (this.serverTimeRequests <= 10) {\n      this.timeOffsets.push(timeOffset);\n    } else {\n      this.timeOffsets[this.serverTimeRequests % 10] = timeOffset;\n    }\n\n    this.avgTimeOffset = this.timeOffsets.reduce((acc, offset) => (acc += offset), 0) / this.timeOffsets.length;\n\n    if (this.serverTimeRequests > 10) {\n      debug(`new server time offset: ${this.avgTimeOffset}ms`);\n      setTimeout(() => this.updateTimeOffset(), 5 * 60 * 1000); // Sync clock every 5 minutes.\n    } else {\n      this.updateTimeOffset();\n    }\n  }\n\n  getServerTime() {\n    return Date.now() + this.avgTimeOffset;\n  }\n\n  getMediaStream(clientId, type = \"audio\") {\n    if (this.mediaStreams[clientId]) {\n      debug(`Already had ${type} for ${clientId}`);\n      return Promise.resolve(this.mediaStreams[clientId][type]);\n    } else {\n      debug(`Waiting on ${type} for ${clientId}`);\n      if (!this.pendingMediaRequests.has(clientId)) {\n        this.pendingMediaRequests.set(clientId, {});\n\n        const audioPromise = new Promise((resolve, reject) => {\n          this.pendingMediaRequests.get(clientId).audio = { resolve, reject };\n        });\n        const videoPromise = new Promise((resolve, reject) => {\n          this.pendingMediaRequests.get(clientId).video = { resolve, reject };\n        });\n\n        this.pendingMediaRequests.get(clientId).audio.promise = audioPromise;\n        this.pendingMediaRequests.get(clientId).video.promise = videoPromise;\n\n        audioPromise.catch(e => console.warn(`${clientId} getMediaStream Audio Error`, e));\n        videoPromise.catch(e => console.warn(`${clientId} getMediaStream Video Error`, e));\n      }\n      return this.pendingMediaRequests.get(clientId)[type].promise;\n    }\n  }\n\n  setMediaStream(clientId, stream) {\n    // Safari doesn't like it when you use single a mixed media stream where one of the tracks is inactive, so we\n    // split the tracks into two streams.\n    const audioStream = new MediaStream();\n    try {\n    stream.getAudioTracks().forEach(track => audioStream.addTrack(track));\n\n    } catch(e) {\n      console.warn(`${clientId} setMediaStream Audio Error`, e);\n    }\n    const videoStream = new MediaStream();\n    try {\n    stream.getVideoTracks().forEach(track => videoStream.addTrack(track));\n\n    } catch (e) {\n      console.warn(`${clientId} setMediaStream Video Error`, e);\n    }\n\n    this.mediaStreams[clientId] = { audio: audioStream, video: videoStream };\n\n    // Resolve the promise for the user's media stream if it exists.\n    if (this.pendingMediaRequests.has(clientId)) {\n      this.pendingMediaRequests.get(clientId).audio.resolve(audioStream);\n      this.pendingMediaRequests.get(clientId).video.resolve(videoStream);\n    }\n  }\n\n  getLocalMediaStream() {\n    return this.localMediaStream;\n  }\n\n  async setLocalMediaStream(stream) {\n    // our job here is to make sure the connection winds up with RTP senders sending the stuff in this stream,\n    // and not the stuff that isn't in this stream. strategy is to replace existing tracks if we can, add tracks\n    // that we can't replace, and disable tracks that don't exist anymore.\n\n    // note that we don't ever remove a track from the stream -- since Janus doesn't support Unified Plan, we absolutely\n    // can't wind up with a SDP that has >1 audio or >1 video tracks, even if one of them is inactive (what you get if\n    // you remove a track from an existing stream.)\n    if (this.publisher && this.publisher.conn) {\n      const existingSenders = this.publisher.conn.getSenders();\n      const newSenders = [];\n      const tracks = stream.getTracks();\n\n      for (let i = 0; i < tracks.length; i++) {\n        const t = tracks[i];\n        const sender = existingSenders.find(s => s.track != null && s.track.kind == t.kind);\n\n        if (sender != null) {\n          if (sender.replaceTrack) {\n            await sender.replaceTrack(t);\n          } else {\n            // Fallback for browsers that don't support replaceTrack. At this time of this writing\n            // most browsers support it, and testing this code path seems to not work properly\n            // in Chrome anymore.\n            stream.removeTrack(sender.track);\n            stream.addTrack(t);\n          }\n          newSenders.push(sender);\n        } else {\n          newSenders.push(this.publisher.conn.addTrack(t, stream));\n        }\n      }\n      existingSenders.forEach(s => {\n        if (!newSenders.includes(s)) {\n          s.track.enabled = false;\n        }\n      });\n    }\n    this.localMediaStream = stream;\n    this.setMediaStream(this.clientId, stream);\n  }\n\n  enableMicrophone(enabled) {\n    if (this.publisher && this.publisher.conn) {\n      this.publisher.conn.getSenders().forEach(s => {\n        if (s.track.kind == \"audio\") {\n          s.track.enabled = enabled;\n        }\n      });\n    }\n  }\n\n  sendData(clientId, dataType, data) {\n    if (!this.publisher) {\n      console.warn(\"sendData called without a publisher\");\n    } else {\n      switch (this.unreliableTransport) {\n        case \"websocket\":\n          if (this.ws.readyState === 1) { // OPEN\n            this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }), whom: clientId });\n          }\n          break;\n        case \"datachannel\":\n          if (this.publisher.unreliableChannel.readyState === \"open\") {\n            this.publisher.unreliableChannel.send(JSON.stringify({ clientId, dataType, data }));\n          }\n          break;\n        default:\n          this.unreliableTransport(clientId, dataType, data);\n          break;\n      }\n    }\n  }\n\n  sendDataGuaranteed(clientId, dataType, data) {\n    if (!this.publisher) {\n      console.warn(\"sendDataGuaranteed called without a publisher\");\n    } else {\n      switch (this.reliableTransport) {\n        case \"websocket\":\n          if (this.ws.readyState === 1) { // OPEN\n            this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }), whom: clientId });\n          }\n          break;\n        case \"datachannel\":\n          if (this.publisher.reliableChannel.readyState === \"open\") {\n            this.publisher.reliableChannel.send(JSON.stringify({ clientId, dataType, data }));\n          }\n          break;\n        default:\n          this.reliableTransport(clientId, dataType, data);\n          break;\n      }\n    }\n  }\n\n  broadcastData(dataType, data) {\n    if (!this.publisher) {\n      console.warn(\"broadcastData called without a publisher\");\n    } else {\n      switch (this.unreliableTransport) {\n        case \"websocket\":\n          if (this.ws.readyState === 1) { // OPEN\n            this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }) });\n          }\n          break;\n        case \"datachannel\":\n          if (this.publisher.unreliableChannel.readyState === \"open\") {\n            this.publisher.unreliableChannel.send(JSON.stringify({ dataType, data }));\n          }\n          break;\n        default:\n          this.unreliableTransport(undefined, dataType, data);\n          break;\n      }\n    }\n  }\n\n  broadcastDataGuaranteed(dataType, data) {\n    if (!this.publisher) {\n      console.warn(\"broadcastDataGuaranteed called without a publisher\");\n    } else {\n      switch (this.reliableTransport) {\n        case \"websocket\":\n          if (this.ws.readyState === 1) { // OPEN\n            this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }) });\n          }\n          break;\n        case \"datachannel\":\n          if (this.publisher.reliableChannel.readyState === \"open\") {\n            this.publisher.reliableChannel.send(JSON.stringify({ dataType, data }));\n          }\n          break;\n        default:\n          this.reliableTransport(undefined, dataType, data);\n          break;\n      }\n    }\n  }\n\n  kick(clientId, permsToken) {\n    return this.publisher.handle.sendMessage({ kind: \"kick\", room_id: this.room, user_id: clientId, token: permsToken }).then(() => {\n      document.body.dispatchEvent(new CustomEvent(\"kicked\", { detail: { clientId: clientId } }));\n    });\n  }\n\n  block(clientId) {\n    return this.publisher.handle.sendMessage({ kind: \"block\", whom: clientId }).then(() => {\n      this.blockedClients.set(clientId, true);\n      document.body.dispatchEvent(new CustomEvent(\"blocked\", { detail: { clientId: clientId } }));\n    });\n  }\n\n  unblock(clientId) {\n    return this.publisher.handle.sendMessage({ kind: \"unblock\", whom: clientId }).then(() => {\n      this.blockedClients.delete(clientId);\n      document.body.dispatchEvent(new CustomEvent(\"unblocked\", { detail: { clientId: clientId } }));\n    });\n  }\n}\n\nNAF.adapters.register(\"janus\", JanusAdapter);\n\nmodule.exports = JanusAdapter;\n","/* eslint-env browser */\n\n/**\n * This is the web browser implementation of `debug()`.\n */\n\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = localstorage();\nexports.destroy = (() => {\n\tlet warned = false;\n\n\treturn () => {\n\t\tif (!warned) {\n\t\t\twarned = true;\n\t\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t\t}\n\t};\n})();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n\t'#0000CC',\n\t'#0000FF',\n\t'#0033CC',\n\t'#0033FF',\n\t'#0066CC',\n\t'#0066FF',\n\t'#0099CC',\n\t'#0099FF',\n\t'#00CC00',\n\t'#00CC33',\n\t'#00CC66',\n\t'#00CC99',\n\t'#00CCCC',\n\t'#00CCFF',\n\t'#3300CC',\n\t'#3300FF',\n\t'#3333CC',\n\t'#3333FF',\n\t'#3366CC',\n\t'#3366FF',\n\t'#3399CC',\n\t'#3399FF',\n\t'#33CC00',\n\t'#33CC33',\n\t'#33CC66',\n\t'#33CC99',\n\t'#33CCCC',\n\t'#33CCFF',\n\t'#6600CC',\n\t'#6600FF',\n\t'#6633CC',\n\t'#6633FF',\n\t'#66CC00',\n\t'#66CC33',\n\t'#9900CC',\n\t'#9900FF',\n\t'#9933CC',\n\t'#9933FF',\n\t'#99CC00',\n\t'#99CC33',\n\t'#CC0000',\n\t'#CC0033',\n\t'#CC0066',\n\t'#CC0099',\n\t'#CC00CC',\n\t'#CC00FF',\n\t'#CC3300',\n\t'#CC3333',\n\t'#CC3366',\n\t'#CC3399',\n\t'#CC33CC',\n\t'#CC33FF',\n\t'#CC6600',\n\t'#CC6633',\n\t'#CC9900',\n\t'#CC9933',\n\t'#CCCC00',\n\t'#CCCC33',\n\t'#FF0000',\n\t'#FF0033',\n\t'#FF0066',\n\t'#FF0099',\n\t'#FF00CC',\n\t'#FF00FF',\n\t'#FF3300',\n\t'#FF3333',\n\t'#FF3366',\n\t'#FF3399',\n\t'#FF33CC',\n\t'#FF33FF',\n\t'#FF6600',\n\t'#FF6633',\n\t'#FF9900',\n\t'#FF9933',\n\t'#FFCC00',\n\t'#FFCC33'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\n// eslint-disable-next-line complexity\nfunction useColors() {\n\t// NB: In an Electron preload script, document will be defined but not fully\n\t// initialized. Since we know we're in Chrome, we'll just detect this case\n\t// explicitly\n\tif (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {\n\t\treturn true;\n\t}\n\n\t// Internet Explorer and Edge do not support colors.\n\tif (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\\/(\\d+)/)) {\n\t\treturn false;\n\t}\n\n\tlet m;\n\n\t// Is webkit? http://stackoverflow.com/a/16459606/376773\n\t// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632\n\t// eslint-disable-next-line no-return-assign\n\treturn (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||\n\t\t// Is firebug? http://stackoverflow.com/a/398120/376773\n\t\t(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||\n\t\t// Is firefox >= v31?\n\t\t// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && (m = navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/)) && parseInt(m[1], 10) >= 31) ||\n\t\t// Double check webkit in userAgent just in case we are in a worker\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\\/(\\d+)/));\n}\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs(args) {\n\targs[0] = (this.useColors ? '%c' : '') +\n\t\tthis.namespace +\n\t\t(this.useColors ? ' %c' : ' ') +\n\t\targs[0] +\n\t\t(this.useColors ? '%c ' : ' ') +\n\t\t'+' + module.exports.humanize(this.diff);\n\n\tif (!this.useColors) {\n\t\treturn;\n\t}\n\n\tconst c = 'color: ' + this.color;\n\targs.splice(1, 0, c, 'color: inherit');\n\n\t// The final \"%c\" is somewhat tricky, because there could be other\n\t// arguments passed either before or after the %c, so we need to\n\t// figure out the correct index to insert the CSS into\n\tlet index = 0;\n\tlet lastC = 0;\n\targs[0].replace(/%[a-zA-Z%]/g, match => {\n\t\tif (match === '%%') {\n\t\t\treturn;\n\t\t}\n\t\tindex++;\n\t\tif (match === '%c') {\n\t\t\t// We only are interested in the *last* %c\n\t\t\t// (the user may have provided their own)\n\t\t\tlastC = index;\n\t\t}\n\t});\n\n\targs.splice(lastC, 0, c);\n}\n\n/**\n * Invokes `console.debug()` when available.\n * No-op when `console.debug` is not a \"function\".\n * If `console.debug` is not available, falls back\n * to `console.log`.\n *\n * @api public\n */\nexports.log = console.debug || console.log || (() => {});\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\nfunction save(namespaces) {\n\ttry {\n\t\tif (namespaces) {\n\t\t\texports.storage.setItem('debug', namespaces);\n\t\t} else {\n\t\t\texports.storage.removeItem('debug');\n\t\t}\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\nfunction load() {\n\tlet r;\n\ttry {\n\t\tr = exports.storage.getItem('debug');\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n\n\t// If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n\tif (!r && typeof process !== 'undefined' && 'env' in process) {\n\t\tr = process.env.DEBUG;\n\t}\n\n\treturn r;\n}\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage() {\n\ttry {\n\t\t// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context\n\t\t// The Browser also has localStorage in the global context.\n\t\treturn localStorage;\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\nmodule.exports = require('./common')(exports);\n\nconst {formatters} = module.exports;\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nformatters.j = function (v) {\n\ttry {\n\t\treturn JSON.stringify(v);\n\t} catch (error) {\n\t\treturn '[UnexpectedJSONParseError]: ' + error.message;\n\t}\n};\n","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n */\n\nfunction setup(env) {\n\tcreateDebug.debug = createDebug;\n\tcreateDebug.default = createDebug;\n\tcreateDebug.coerce = coerce;\n\tcreateDebug.disable = disable;\n\tcreateDebug.enable = enable;\n\tcreateDebug.enabled = enabled;\n\tcreateDebug.humanize = require('ms');\n\tcreateDebug.destroy = destroy;\n\n\tObject.keys(env).forEach(key => {\n\t\tcreateDebug[key] = env[key];\n\t});\n\n\t/**\n\t* The currently active debug mode names, and names to skip.\n\t*/\n\n\tcreateDebug.names = [];\n\tcreateDebug.skips = [];\n\n\t/**\n\t* Map of special \"%n\" handling functions, for the debug \"format\" argument.\n\t*\n\t* Valid key names are a single, lower or upper-case letter, i.e. \"n\" and \"N\".\n\t*/\n\tcreateDebug.formatters = {};\n\n\t/**\n\t* Selects a color for a debug namespace\n\t* @param {String} namespace The namespace string for the debug instance to be colored\n\t* @return {Number|String} An ANSI color code for the given namespace\n\t* @api private\n\t*/\n\tfunction selectColor(namespace) {\n\t\tlet hash = 0;\n\n\t\tfor (let i = 0; i < namespace.length; i++) {\n\t\t\thash = ((hash << 5) - hash) + namespace.charCodeAt(i);\n\t\t\thash |= 0; // Convert to 32bit integer\n\t\t}\n\n\t\treturn createDebug.colors[Math.abs(hash) % createDebug.colors.length];\n\t}\n\tcreateDebug.selectColor = selectColor;\n\n\t/**\n\t* Create a debugger with the given `namespace`.\n\t*\n\t* @param {String} namespace\n\t* @return {Function}\n\t* @api public\n\t*/\n\tfunction createDebug(namespace) {\n\t\tlet prevTime;\n\t\tlet enableOverride = null;\n\t\tlet namespacesCache;\n\t\tlet enabledCache;\n\n\t\tfunction debug(...args) {\n\t\t\t// Disabled?\n\t\t\tif (!debug.enabled) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst self = debug;\n\n\t\t\t// Set `diff` timestamp\n\t\t\tconst curr = Number(new Date());\n\t\t\tconst ms = curr - (prevTime || curr);\n\t\t\tself.diff = ms;\n\t\t\tself.prev = prevTime;\n\t\t\tself.curr = curr;\n\t\t\tprevTime = curr;\n\n\t\t\targs[0] = createDebug.coerce(args[0]);\n\n\t\t\tif (typeof args[0] !== 'string') {\n\t\t\t\t// Anything else let's inspect with %O\n\t\t\t\targs.unshift('%O');\n\t\t\t}\n\n\t\t\t// Apply any `formatters` transformations\n\t\t\tlet index = 0;\n\t\t\targs[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {\n\t\t\t\t// If we encounter an escaped % then don't increase the array index\n\t\t\t\tif (match === '%%') {\n\t\t\t\t\treturn '%';\n\t\t\t\t}\n\t\t\t\tindex++;\n\t\t\t\tconst formatter = createDebug.formatters[format];\n\t\t\t\tif (typeof formatter === 'function') {\n\t\t\t\t\tconst val = args[index];\n\t\t\t\t\tmatch = formatter.call(self, val);\n\n\t\t\t\t\t// Now we need to remove `args[index]` since it's inlined in the `format`\n\t\t\t\t\targs.splice(index, 1);\n\t\t\t\t\tindex--;\n\t\t\t\t}\n\t\t\t\treturn match;\n\t\t\t});\n\n\t\t\t// Apply env-specific formatting (colors, etc.)\n\t\t\tcreateDebug.formatArgs.call(self, args);\n\n\t\t\tconst logFn = self.log || createDebug.log;\n\t\t\tlogFn.apply(self, args);\n\t\t}\n\n\t\tdebug.namespace = namespace;\n\t\tdebug.useColors = createDebug.useColors();\n\t\tdebug.color = createDebug.selectColor(namespace);\n\t\tdebug.extend = extend;\n\t\tdebug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.\n\n\t\tObject.defineProperty(debug, 'enabled', {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: false,\n\t\t\tget: () => {\n\t\t\t\tif (enableOverride !== null) {\n\t\t\t\t\treturn enableOverride;\n\t\t\t\t}\n\t\t\t\tif (namespacesCache !== createDebug.namespaces) {\n\t\t\t\t\tnamespacesCache = createDebug.namespaces;\n\t\t\t\t\tenabledCache = createDebug.enabled(namespace);\n\t\t\t\t}\n\n\t\t\t\treturn enabledCache;\n\t\t\t},\n\t\t\tset: v => {\n\t\t\t\tenableOverride = v;\n\t\t\t}\n\t\t});\n\n\t\t// Env-specific initialization logic for debug instances\n\t\tif (typeof createDebug.init === 'function') {\n\t\t\tcreateDebug.init(debug);\n\t\t}\n\n\t\treturn debug;\n\t}\n\n\tfunction extend(namespace, delimiter) {\n\t\tconst newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);\n\t\tnewDebug.log = this.log;\n\t\treturn newDebug;\n\t}\n\n\t/**\n\t* Enables a debug mode by namespaces. This can include modes\n\t* separated by a colon and wildcards.\n\t*\n\t* @param {String} namespaces\n\t* @api public\n\t*/\n\tfunction enable(namespaces) {\n\t\tcreateDebug.save(namespaces);\n\t\tcreateDebug.namespaces = namespaces;\n\n\t\tcreateDebug.names = [];\n\t\tcreateDebug.skips = [];\n\n\t\tconst split = (typeof namespaces === 'string' ? namespaces : '')\n\t\t\t.trim()\n\t\t\t.replace(' ', ',')\n\t\t\t.split(',')\n\t\t\t.filter(Boolean);\n\n\t\tfor (const ns of split) {\n\t\t\tif (ns[0] === '-') {\n\t\t\t\tcreateDebug.skips.push(ns.slice(1));\n\t\t\t} else {\n\t\t\t\tcreateDebug.names.push(ns);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if the given string matches a namespace template, honoring\n\t * asterisks as wildcards.\n\t *\n\t * @param {String} search\n\t * @param {String} template\n\t * @return {Boolean}\n\t */\n\tfunction matchesTemplate(search, template) {\n\t\tlet searchIndex = 0;\n\t\tlet templateIndex = 0;\n\t\tlet starIndex = -1;\n\t\tlet matchIndex = 0;\n\n\t\twhile (searchIndex < search.length) {\n\t\t\tif (templateIndex < template.length && (template[templateIndex] === search[searchIndex] || template[templateIndex] === '*')) {\n\t\t\t\t// Match character or proceed with wildcard\n\t\t\t\tif (template[templateIndex] === '*') {\n\t\t\t\t\tstarIndex = templateIndex;\n\t\t\t\t\tmatchIndex = searchIndex;\n\t\t\t\t\ttemplateIndex++; // Skip the '*'\n\t\t\t\t} else {\n\t\t\t\t\tsearchIndex++;\n\t\t\t\t\ttemplateIndex++;\n\t\t\t\t}\n\t\t\t} else if (starIndex !== -1) { // eslint-disable-line no-negated-condition\n\t\t\t\t// Backtrack to the last '*' and try to match more characters\n\t\t\t\ttemplateIndex = starIndex + 1;\n\t\t\t\tmatchIndex++;\n\t\t\t\tsearchIndex = matchIndex;\n\t\t\t} else {\n\t\t\t\treturn false; // No match\n\t\t\t}\n\t\t}\n\n\t\t// Handle trailing '*' in template\n\t\twhile (templateIndex < template.length && template[templateIndex] === '*') {\n\t\t\ttemplateIndex++;\n\t\t}\n\n\t\treturn templateIndex === template.length;\n\t}\n\n\t/**\n\t* Disable debug output.\n\t*\n\t* @return {String} namespaces\n\t* @api public\n\t*/\n\tfunction disable() {\n\t\tconst namespaces = [\n\t\t\t...createDebug.names,\n\t\t\t...createDebug.skips.map(namespace => '-' + namespace)\n\t\t].join(',');\n\t\tcreateDebug.enable('');\n\t\treturn namespaces;\n\t}\n\n\t/**\n\t* Returns true if the given mode name is enabled, false otherwise.\n\t*\n\t* @param {String} name\n\t* @return {Boolean}\n\t* @api public\n\t*/\n\tfunction enabled(name) {\n\t\tfor (const skip of createDebug.skips) {\n\t\t\tif (matchesTemplate(name, skip)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\tfor (const ns of createDebug.names) {\n\t\t\tif (matchesTemplate(name, ns)) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t* Coerce `val`.\n\t*\n\t* @param {Mixed} val\n\t* @return {Mixed}\n\t* @api private\n\t*/\n\tfunction coerce(val) {\n\t\tif (val instanceof Error) {\n\t\t\treturn val.stack || val.message;\n\t\t}\n\t\treturn val;\n\t}\n\n\t/**\n\t* XXX DO NOT USE. This is a temporary stub function.\n\t* XXX It WILL be removed in the next major release.\n\t*/\n\tfunction destroy() {\n\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t}\n\n\tcreateDebug.enable(createDebug.load());\n\n\treturn createDebug;\n}\n\nmodule.exports = setup;\n","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar w = d * 7;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n *  - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} [options]\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function (val, options) {\n  options = options || {};\n  var type = typeof val;\n  if (type === 'string' && val.length > 0) {\n    return parse(val);\n  } else if (type === 'number' && isFinite(val)) {\n    return options.long ? fmtLong(val) : fmtShort(val);\n  }\n  throw new Error(\n    'val is not a non-empty string or a valid number. val=' +\n      JSON.stringify(val)\n  );\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n  str = String(str);\n  if (str.length > 100) {\n    return;\n  }\n  var match = /^(-?(?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(\n    str\n  );\n  if (!match) {\n    return;\n  }\n  var n = parseFloat(match[1]);\n  var type = (match[2] || 'ms').toLowerCase();\n  switch (type) {\n    case 'years':\n    case 'year':\n    case 'yrs':\n    case 'yr':\n    case 'y':\n      return n * y;\n    case 'weeks':\n    case 'week':\n    case 'w':\n      return n * w;\n    case 'days':\n    case 'day':\n    case 'd':\n      return n * d;\n    case 'hours':\n    case 'hour':\n    case 'hrs':\n    case 'hr':\n    case 'h':\n      return n * h;\n    case 'minutes':\n    case 'minute':\n    case 'mins':\n    case 'min':\n    case 'm':\n      return n * m;\n    case 'seconds':\n    case 'second':\n    case 'secs':\n    case 'sec':\n    case 's':\n      return n * s;\n    case 'milliseconds':\n    case 'millisecond':\n    case 'msecs':\n    case 'msec':\n    case 'ms':\n      return n;\n    default:\n      return undefined;\n  }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return Math.round(ms / d) + 'd';\n  }\n  if (msAbs >= h) {\n    return Math.round(ms / h) + 'h';\n  }\n  if (msAbs >= m) {\n    return Math.round(ms / m) + 'm';\n  }\n  if (msAbs >= s) {\n    return Math.round(ms / s) + 's';\n  }\n  return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n  var msAbs = Math.abs(ms);\n  if (msAbs >= d) {\n    return plural(ms, msAbs, d, 'day');\n  }\n  if (msAbs >= h) {\n    return plural(ms, msAbs, h, 'hour');\n  }\n  if (msAbs >= m) {\n    return plural(ms, msAbs, m, 'minute');\n  }\n  if (msAbs >= s) {\n    return plural(ms, msAbs, s, 'second');\n  }\n  return ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, msAbs, n, name) {\n  var isPlural = msAbs >= n * 1.5;\n  return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');\n}\n","/* eslint-env node */\n'use strict';\n\n// SDP helpers.\nconst SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n  return Math.random().toString(36).substring(2, 12);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n  return blob.trim().split('\\n').map(line => line.trim());\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n  const parts = blob.split('\\nm=');\n  return parts.map((part, index) => (index > 0 ?\n    'm=' + part : part).trim() + '\\r\\n');\n};\n\n// Returns the session description.\nSDPUtils.getDescription = function(blob) {\n  const sections = SDPUtils.splitSections(blob);\n  return sections && sections[0];\n};\n\n// Returns the individual media sections.\nSDPUtils.getMediaSections = function(blob) {\n  const sections = SDPUtils.splitSections(blob);\n  sections.shift();\n  return sections;\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n  return SDPUtils.splitLines(blob).filter(line => line.indexOf(prefix) === 0);\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\n// Input can be prefixed with a=.\nSDPUtils.parseCandidate = function(line) {\n  let parts;\n  // Parse both variants.\n  if (line.indexOf('a=candidate:') === 0) {\n    parts = line.substring(12).split(' ');\n  } else {\n    parts = line.substring(10).split(' ');\n  }\n\n  const candidate = {\n    foundation: parts[0],\n    component: {1: 'rtp', 2: 'rtcp'}[parts[1]] || parts[1],\n    protocol: parts[2].toLowerCase(),\n    priority: parseInt(parts[3], 10),\n    ip: parts[4],\n    address: parts[4], // address is an alias for ip.\n    port: parseInt(parts[5], 10),\n    // skip parts[6] == 'typ'\n    type: parts[7],\n  };\n\n  for (let i = 8; i < parts.length; i += 2) {\n    switch (parts[i]) {\n      case 'raddr':\n        candidate.relatedAddress = parts[i + 1];\n        break;\n      case 'rport':\n        candidate.relatedPort = parseInt(parts[i + 1], 10);\n        break;\n      case 'tcptype':\n        candidate.tcpType = parts[i + 1];\n        break;\n      case 'ufrag':\n        candidate.ufrag = parts[i + 1]; // for backward compatibility.\n        candidate.usernameFragment = parts[i + 1];\n        break;\n      default: // extension handling, in particular ufrag. Don't overwrite.\n        if (candidate[parts[i]] === undefined) {\n          candidate[parts[i]] = parts[i + 1];\n        }\n        break;\n    }\n  }\n  return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\n// This does not include the a= prefix!\nSDPUtils.writeCandidate = function(candidate) {\n  const sdp = [];\n  sdp.push(candidate.foundation);\n\n  const component = candidate.component;\n  if (component === 'rtp') {\n    sdp.push(1);\n  } else if (component === 'rtcp') {\n    sdp.push(2);\n  } else {\n    sdp.push(component);\n  }\n  sdp.push(candidate.protocol.toUpperCase());\n  sdp.push(candidate.priority);\n  sdp.push(candidate.address || candidate.ip);\n  sdp.push(candidate.port);\n\n  const type = candidate.type;\n  sdp.push('typ');\n  sdp.push(type);\n  if (type !== 'host' && candidate.relatedAddress &&\n      candidate.relatedPort) {\n    sdp.push('raddr');\n    sdp.push(candidate.relatedAddress);\n    sdp.push('rport');\n    sdp.push(candidate.relatedPort);\n  }\n  if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n    sdp.push('tcptype');\n    sdp.push(candidate.tcpType);\n  }\n  if (candidate.usernameFragment || candidate.ufrag) {\n    sdp.push('ufrag');\n    sdp.push(candidate.usernameFragment || candidate.ufrag);\n  }\n  return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an ice-options line, returns an array of option tags.\n// Sample input:\n// a=ice-options:foo bar\nSDPUtils.parseIceOptions = function(line) {\n  return line.substring(14).split(' ');\n};\n\n// Parses a rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n  let parts = line.substring(9).split(' ');\n  const parsed = {\n    payloadType: parseInt(parts.shift(), 10), // was: id\n  };\n\n  parts = parts[0].split('/');\n\n  parsed.name = parts[0];\n  parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n  parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n  // legacy alias, got renamed back to channels in ORTC.\n  parsed.numChannels = parsed.channels;\n  return parsed;\n};\n\n// Generates a rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n  let pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  const channels = codec.channels || codec.numChannels || 1;\n  return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n      (channels !== 1 ? '/' + channels : '') + '\\r\\n';\n};\n\n// Parses a extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n  const parts = line.substring(9).split(' ');\n  return {\n    id: parseInt(parts[0], 10),\n    direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',\n    uri: parts[1],\n    attributes: parts.slice(2).join(' '),\n  };\n};\n\n// Generates an extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n  return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n      (headerExtension.direction && headerExtension.direction !== 'sendrecv'\n        ? '/' + headerExtension.direction\n        : '') +\n      ' ' + headerExtension.uri +\n      (headerExtension.attributes ? ' ' + headerExtension.attributes : '') +\n      '\\r\\n';\n};\n\n// Parses a fmtp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n  const parsed = {};\n  let kv;\n  const parts = line.substring(line.indexOf(' ') + 1).split(';');\n  for (let j = 0; j < parts.length; j++) {\n    kv = parts[j].trim().split('=');\n    parsed[kv[0].trim()] = kv[1];\n  }\n  return parsed;\n};\n\n// Generates a fmtp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n  let line = '';\n  let pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.parameters && Object.keys(codec.parameters).length) {\n    const params = [];\n    Object.keys(codec.parameters).forEach(param => {\n      if (codec.parameters[param] !== undefined) {\n        params.push(param + '=' + codec.parameters[param]);\n      } else {\n        params.push(param);\n      }\n    });\n    line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n  }\n  return line;\n};\n\n// Parses a rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n  const parts = line.substring(line.indexOf(' ') + 1).split(' ');\n  return {\n    type: parts.shift(),\n    parameter: parts.join(' '),\n  };\n};\n\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n  let lines = '';\n  let pt = codec.payloadType;\n  if (codec.preferredPayloadType !== undefined) {\n    pt = codec.preferredPayloadType;\n  }\n  if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n    // FIXME: special handling for trr-int?\n    codec.rtcpFeedback.forEach(fb => {\n      lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n      (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n          '\\r\\n';\n    });\n  }\n  return lines;\n};\n\n// Parses a RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n  const sp = line.indexOf(' ');\n  const parts = {\n    ssrc: parseInt(line.substring(7, sp), 10),\n  };\n  const colon = line.indexOf(':', sp);\n  if (colon > -1) {\n    parts.attribute = line.substring(sp + 1, colon);\n    parts.value = line.substring(colon + 1);\n  } else {\n    parts.attribute = line.substring(sp + 1);\n  }\n  return parts;\n};\n\n// Parse a ssrc-group line (see RFC 5576). Sample input:\n// a=ssrc-group:semantics 12 34\nSDPUtils.parseSsrcGroup = function(line) {\n  const parts = line.substring(13).split(' ');\n  return {\n    semantics: parts.shift(),\n    ssrcs: parts.map(ssrc => parseInt(ssrc, 10)),\n  };\n};\n\n// Extracts the MID (RFC 5888) from a media section.\n// Returns the MID or undefined if no mid line was found.\nSDPUtils.getMid = function(mediaSection) {\n  const mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];\n  if (mid) {\n    return mid.substring(6);\n  }\n};\n\n// Parses a fingerprint line for DTLS-SRTP.\nSDPUtils.parseFingerprint = function(line) {\n  const parts = line.substring(14).split(' ');\n  return {\n    algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.\n    value: parts[1].toUpperCase(), // the definition is upper-case in RFC 4572.\n  };\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n  const lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n    'a=fingerprint:');\n  // Note: a=setup line is ignored since we use the 'auto' role in Edge.\n  return {\n    role: 'auto',\n    fingerprints: lines.map(SDPUtils.parseFingerprint),\n  };\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n  let sdp = 'a=setup:' + setupType + '\\r\\n';\n  params.fingerprints.forEach(fp => {\n    sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n  });\n  return sdp;\n};\n\n// Parses a=crypto lines into\n//   https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members\nSDPUtils.parseCryptoLine = function(line) {\n  const parts = line.substring(9).split(' ');\n  return {\n    tag: parseInt(parts[0], 10),\n    cryptoSuite: parts[1],\n    keyParams: parts[2],\n    sessionParams: parts.slice(3),\n  };\n};\n\nSDPUtils.writeCryptoLine = function(parameters) {\n  return 'a=crypto:' + parameters.tag + ' ' +\n    parameters.cryptoSuite + ' ' +\n    (typeof parameters.keyParams === 'object'\n      ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)\n      : parameters.keyParams) +\n    (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +\n    '\\r\\n';\n};\n\n// Parses the crypto key parameters into\n//   https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*\nSDPUtils.parseCryptoKeyParams = function(keyParams) {\n  if (keyParams.indexOf('inline:') !== 0) {\n    return null;\n  }\n  const parts = keyParams.substring(7).split('|');\n  return {\n    keyMethod: 'inline',\n    keySalt: parts[0],\n    lifeTime: parts[1],\n    mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,\n    mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,\n  };\n};\n\nSDPUtils.writeCryptoKeyParams = function(keyParams) {\n  return keyParams.keyMethod + ':'\n    + keyParams.keySalt +\n    (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +\n    (keyParams.mkiValue && keyParams.mkiLength\n      ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength\n      : '');\n};\n\n// Extracts all SDES parameters.\nSDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {\n  const lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n    'a=crypto:');\n  return lines.map(SDPUtils.parseCryptoLine);\n};\n\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n//   get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n  const ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,\n    'a=ice-ufrag:')[0];\n  const pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,\n    'a=ice-pwd:')[0];\n  if (!(ufrag && pwd)) {\n    return null;\n  }\n  return {\n    usernameFragment: ufrag.substring(12),\n    password: pwd.substring(10),\n  };\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n  let sdp = 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n      'a=ice-pwd:' + params.password + '\\r\\n';\n  if (params.iceLite) {\n    sdp += 'a=ice-lite\\r\\n';\n  }\n  return sdp;\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n  const description = {\n    codecs: [],\n    headerExtensions: [],\n    fecMechanisms: [],\n    rtcp: [],\n  };\n  const lines = SDPUtils.splitLines(mediaSection);\n  const mline = lines[0].split(' ');\n  description.profile = mline[2];\n  for (let i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n    const pt = mline[i];\n    const rtpmapline = SDPUtils.matchPrefix(\n      mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n    if (rtpmapline) {\n      const codec = SDPUtils.parseRtpMap(rtpmapline);\n      const fmtps = SDPUtils.matchPrefix(\n        mediaSection, 'a=fmtp:' + pt + ' ');\n      // Only the first a=fmtp:<pt> is considered.\n      codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n      codec.rtcpFeedback = SDPUtils.matchPrefix(\n        mediaSection, 'a=rtcp-fb:' + pt + ' ')\n        .map(SDPUtils.parseRtcpFb);\n      description.codecs.push(codec);\n      // parse FEC mechanisms from rtpmap lines.\n      switch (codec.name.toUpperCase()) {\n        case 'RED':\n        case 'ULPFEC':\n          description.fecMechanisms.push(codec.name.toUpperCase());\n          break;\n        default: // only RED and ULPFEC are recognized as FEC mechanisms.\n          break;\n      }\n    }\n  }\n  SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(line => {\n    description.headerExtensions.push(SDPUtils.parseExtmap(line));\n  });\n  const wildcardRtcpFb = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-fb:* ')\n    .map(SDPUtils.parseRtcpFb);\n  description.codecs.forEach(codec => {\n    wildcardRtcpFb.forEach(fb=> {\n      const duplicate = codec.rtcpFeedback.find(existingFeedback => {\n        return existingFeedback.type === fb.type &&\n          existingFeedback.parameter === fb.parameter;\n      });\n      if (!duplicate) {\n        codec.rtcpFeedback.push(fb);\n      }\n    });\n  });\n  // FIXME: parse rtcp.\n  return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n  let sdp = '';\n\n  // Build the mline.\n  sdp += 'm=' + kind + ' ';\n  sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n  sdp += ' ' + (caps.profile || 'UDP/TLS/RTP/SAVPF') + ' ';\n  sdp += caps.codecs.map(codec => {\n    if (codec.preferredPayloadType !== undefined) {\n      return codec.preferredPayloadType;\n    }\n    return codec.payloadType;\n  }).join(' ') + '\\r\\n';\n\n  sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n  sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n  // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n  caps.codecs.forEach(codec => {\n    sdp += SDPUtils.writeRtpMap(codec);\n    sdp += SDPUtils.writeFmtp(codec);\n    sdp += SDPUtils.writeRtcpFb(codec);\n  });\n  let maxptime = 0;\n  caps.codecs.forEach(codec => {\n    if (codec.maxptime > maxptime) {\n      maxptime = codec.maxptime;\n    }\n  });\n  if (maxptime > 0) {\n    sdp += 'a=maxptime:' + maxptime + '\\r\\n';\n  }\n\n  if (caps.headerExtensions) {\n    caps.headerExtensions.forEach(extension => {\n      sdp += SDPUtils.writeExtmap(extension);\n    });\n  }\n  // FIXME: write fecMechanisms.\n  return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n  const encodingParameters = [];\n  const description = SDPUtils.parseRtpParameters(mediaSection);\n  const hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n  const hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n  // filter a=ssrc:... cname:, ignore PlanB-msid\n  const ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n    .map(line => SDPUtils.parseSsrcMedia(line))\n    .filter(parts => parts.attribute === 'cname');\n  const primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n  let secondarySsrc;\n\n  const flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n    .map(line => {\n      const parts = line.substring(17).split(' ');\n      return parts.map(part => parseInt(part, 10));\n    });\n  if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n    secondarySsrc = flows[0][1];\n  }\n\n  description.codecs.forEach(codec => {\n    if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n      let encParam = {\n        ssrc: primarySsrc,\n        codecPayloadType: parseInt(codec.parameters.apt, 10),\n      };\n      if (primarySsrc && secondarySsrc) {\n        encParam.rtx = {ssrc: secondarySsrc};\n      }\n      encodingParameters.push(encParam);\n      if (hasRed) {\n        encParam = JSON.parse(JSON.stringify(encParam));\n        encParam.fec = {\n          ssrc: primarySsrc,\n          mechanism: hasUlpfec ? 'red+ulpfec' : 'red',\n        };\n        encodingParameters.push(encParam);\n      }\n    }\n  });\n  if (encodingParameters.length === 0 && primarySsrc) {\n    encodingParameters.push({\n      ssrc: primarySsrc,\n    });\n  }\n\n  // we support both b=AS and b=TIAS but interpret AS as TIAS.\n  let bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n  if (bandwidth.length) {\n    if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n      bandwidth = parseInt(bandwidth[0].substring(7), 10);\n    } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n      // use formula from JSEP to convert b=AS to TIAS value.\n      bandwidth = parseInt(bandwidth[0].substring(5), 10) * 1000 * 0.95\n          - (50 * 40 * 8);\n    } else {\n      bandwidth = undefined;\n    }\n    encodingParameters.forEach(params => {\n      params.maxBitrate = bandwidth;\n    });\n  }\n  return encodingParameters;\n};\n\n// parses http://draft.ortc.org/#rtcrtcpparameters*\nSDPUtils.parseRtcpParameters = function(mediaSection) {\n  const rtcpParameters = {};\n\n  // Gets the first SSRC. Note that with RTX there might be multiple\n  // SSRCs.\n  const remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n    .map(line => SDPUtils.parseSsrcMedia(line))\n    .filter(obj => obj.attribute === 'cname')[0];\n  if (remoteSsrc) {\n    rtcpParameters.cname = remoteSsrc.value;\n    rtcpParameters.ssrc = remoteSsrc.ssrc;\n  }\n\n  // Edge uses the compound attribute instead of reducedSize\n  // compound is !reducedSize\n  const rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');\n  rtcpParameters.reducedSize = rsize.length > 0;\n  rtcpParameters.compound = rsize.length === 0;\n\n  // parses the rtcp-mux attrіbute.\n  // Note that Edge does not support unmuxed RTCP.\n  const mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');\n  rtcpParameters.mux = mux.length > 0;\n\n  return rtcpParameters;\n};\n\nSDPUtils.writeRtcpParameters = function(rtcpParameters) {\n  let sdp = '';\n  if (rtcpParameters.reducedSize) {\n    sdp += 'a=rtcp-rsize\\r\\n';\n  }\n  if (rtcpParameters.mux) {\n    sdp += 'a=rtcp-mux\\r\\n';\n  }\n  if (rtcpParameters.ssrc !== undefined && rtcpParameters.cname) {\n    sdp += 'a=ssrc:' + rtcpParameters.ssrc +\n      ' cname:' + rtcpParameters.cname + '\\r\\n';\n  }\n  return sdp;\n};\n\n\n// parses either a=msid: or a=ssrc:... msid lines and returns\n// the id of the MediaStream and MediaStreamTrack.\nSDPUtils.parseMsid = function(mediaSection) {\n  let parts;\n  const spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');\n  if (spec.length === 1) {\n    parts = spec[0].substring(7).split(' ');\n    return {stream: parts[0], track: parts[1]};\n  }\n  const planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n    .map(line => SDPUtils.parseSsrcMedia(line))\n    .filter(msidParts => msidParts.attribute === 'msid');\n  if (planB.length > 0) {\n    parts = planB[0].value.split(' ');\n    return {stream: parts[0], track: parts[1]};\n  }\n};\n\n// SCTP\n// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back\n// to draft-ietf-mmusic-sctp-sdp-05\nSDPUtils.parseSctpDescription = function(mediaSection) {\n  const mline = SDPUtils.parseMLine(mediaSection);\n  const maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');\n  let maxMessageSize;\n  if (maxSizeLine.length > 0) {\n    maxMessageSize = parseInt(maxSizeLine[0].substring(19), 10);\n  }\n  if (isNaN(maxMessageSize)) {\n    maxMessageSize = 65536;\n  }\n  const sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');\n  if (sctpPort.length > 0) {\n    return {\n      port: parseInt(sctpPort[0].substring(12), 10),\n      protocol: mline.fmt,\n      maxMessageSize,\n    };\n  }\n  const sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');\n  if (sctpMapLines.length > 0) {\n    const parts = sctpMapLines[0]\n      .substring(10)\n      .split(' ');\n    return {\n      port: parseInt(parts[0], 10),\n      protocol: parts[1],\n      maxMessageSize,\n    };\n  }\n};\n\n// SCTP\n// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers\n// support by now receiving in this format, unless we originally parsed\n// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line\n// protocol of DTLS/SCTP -- without UDP/ or TCP/)\nSDPUtils.writeSctpDescription = function(media, sctp) {\n  let output = [];\n  if (media.protocol !== 'DTLS/SCTP') {\n    output = [\n      'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\\r\\n',\n      'c=IN IP4 0.0.0.0\\r\\n',\n      'a=sctp-port:' + sctp.port + '\\r\\n',\n    ];\n  } else {\n    output = [\n      'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\\r\\n',\n      'c=IN IP4 0.0.0.0\\r\\n',\n      'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\\r\\n',\n    ];\n  }\n  if (sctp.maxMessageSize !== undefined) {\n    output.push('a=max-message-size:' + sctp.maxMessageSize + '\\r\\n');\n  }\n  return output.join('');\n};\n\n// Generate a session ID for SDP.\n// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1\n// recommends using a cryptographically random +ve 64-bit value\n// but right now this should be acceptable and within the right range\nSDPUtils.generateSessionId = function() {\n  return Math.random().toString().substr(2, 22);\n};\n\n// Write boiler plate for start of SDP\n// sessId argument is optional - if not supplied it will\n// be generated randomly\n// sessVersion is optional and defaults to 2\n// sessUser is optional and defaults to 'thisisadapterortc'\nSDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {\n  let sessionId;\n  const version = sessVer !== undefined ? sessVer : 2;\n  if (sessId) {\n    sessionId = sessId;\n  } else {\n    sessionId = SDPUtils.generateSessionId();\n  }\n  const user = sessUser || 'thisisadapterortc';\n  // FIXME: sess-id should be an NTP timestamp.\n  return 'v=0\\r\\n' +\n      'o=' + user + ' ' + sessionId + ' ' + version +\n        ' IN IP4 127.0.0.1\\r\\n' +\n      's=-\\r\\n' +\n      't=0 0\\r\\n';\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n  // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n  const lines = SDPUtils.splitLines(mediaSection);\n  for (let i = 0; i < lines.length; i++) {\n    switch (lines[i]) {\n      case 'a=sendrecv':\n      case 'a=sendonly':\n      case 'a=recvonly':\n      case 'a=inactive':\n        return lines[i].substring(2);\n      default:\n        // FIXME: What should happen here?\n    }\n  }\n  if (sessionpart) {\n    return SDPUtils.getDirection(sessionpart);\n  }\n  return 'sendrecv';\n};\n\nSDPUtils.getKind = function(mediaSection) {\n  const lines = SDPUtils.splitLines(mediaSection);\n  const mline = lines[0].split(' ');\n  return mline[0].substring(2);\n};\n\nSDPUtils.isRejected = function(mediaSection) {\n  return mediaSection.split(' ', 2)[1] === '0';\n};\n\nSDPUtils.parseMLine = function(mediaSection) {\n  const lines = SDPUtils.splitLines(mediaSection);\n  const parts = lines[0].substring(2).split(' ');\n  return {\n    kind: parts[0],\n    port: parseInt(parts[1], 10),\n    protocol: parts[2],\n    fmt: parts.slice(3).join(' '),\n  };\n};\n\nSDPUtils.parseOLine = function(mediaSection) {\n  const line = SDPUtils.matchPrefix(mediaSection, 'o=')[0];\n  const parts = line.substring(2).split(' ');\n  return {\n    username: parts[0],\n    sessionId: parts[1],\n    sessionVersion: parseInt(parts[2], 10),\n    netType: parts[3],\n    addressType: parts[4],\n    address: parts[5],\n  };\n};\n\n// a very naive interpretation of a valid SDP.\nSDPUtils.isValidSDP = function(blob) {\n  if (typeof blob !== 'string' || blob.length === 0) {\n    return false;\n  }\n  const lines = SDPUtils.splitLines(blob);\n  for (let i = 0; i < lines.length; i++) {\n    if (lines[i].length < 2 || lines[i].charAt(1) !== '=') {\n      return false;\n    }\n    // TODO: check the modifier 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\ No newline at end of file diff --git a/dist/naf-janus-adapter.min.js b/dist/naf-janus-adapter.min.js index 0d89a91..52ee1ea 100644 --- a/dist/naf-janus-adapter.min.js +++ b/dist/naf-janus-adapter.min.js @@ -1,2 +1,2 @@ -(()=>{var e={734:e=>{function t(e){this.session=e,this.id=void 0}function n(e,t){this.output=e,this.id=void 0,this.nextTxId=0,this.txns={},this.eventHandlers={},this.options=Object.assign({verbose:!1,timeoutMs:1e4,keepaliveMs:3e4},t)}t.prototype.attach=function(e,t){var n={plugin:e,loop_index:t,"force-bundle":!0,"force-rtcp-mux":!0};return this.session.send("attach",n).then((e=>(this.id=e.data.id,e)))},t.prototype.detach=function(){return this.send("detach")},t.prototype.on=function(e,t){return this.session.on(e,(e=>{e.sender==this.id&&t(e)}))},t.prototype.send=function(e,t){return this.session.send(e,Object.assign({handle_id:this.id},t))},t.prototype.sendMessage=function(e){return this.send("message",{body:e})},t.prototype.sendJsep=function(e){return this.send("message",{body:{},jsep:e})},t.prototype.sendTrickle=function(e){return this.send("trickle",{candidate:e})},n.prototype.create=function(){return this.send("create").then((e=>(this.id=e.data.id,e)))},n.prototype.destroy=function(){return this.send("destroy").then((e=>(this.dispose(),e)))},n.prototype.dispose=function(){for(var e in this._killKeepalive(),this.eventHandlers={},this.txns)if(this.txns.hasOwnProperty(e)){var t=this.txns[e];clearTimeout(t.timeout),t.reject(new Error("Janus session was disposed.")),delete this.txns[e]}},n.prototype.isError=function(e){return"error"===e.janus},n.prototype.on=function(e,t){var n=this.eventHandlers[e];null==n&&(n=this.eventHandlers[e]=[]),n.push(t)},n.prototype.receive=function(e){this.options.verbose&&this._logIncoming(e),e.session_id!=this.id&&console.warn("Incorrect session ID received in Janus signalling message: was "+e.session_id+", expected "+this.id+".");var t=e.janus,n=this.eventHandlers[t];if(null!=n)for(var s=0;s{var i=null;this.options.timeoutMs&&(i=setTimeout((()=>{delete this.txns[t.transaction],s(new Error("Signalling transaction with txid "+t.transaction+" timed out."))}),this.options.timeoutMs)),this.txns[t.transaction]={resolve:n,reject:s,timeout:i,type:e},this._transmit(e,t)}))},n.prototype._transmit=function(e,t){t=Object.assign({janus:e},t),null!=this.id&&(t=Object.assign({session_id:this.id},t)),this.options.verbose&&this._logOutgoing(t),this.output(JSON.stringify(t)),this._resetKeepalive()},n.prototype._logOutgoing=function(e){var t=e.janus;"message"===t&&e.jsep&&(t=e.jsep.type);var n="> Outgoing Janus "+(t||"signal")+" (#"+e.transaction+"): ";console.debug("%c"+n,"color: #040",e)},n.prototype._logIncoming=function(e){var t=e.janus,n=e.transaction?"< Incoming Janus "+(t||"signal")+" (#"+e.transaction+"): ":"< Incoming Janus "+(t||"signal")+": ";console.debug("%c"+n,"color: #004",e)},n.prototype._sendKeepalive=function(){return this.send("keepalive")},n.prototype._killKeepalive=function(){clearTimeout(this.keepaliveTimeout)},n.prototype._resetKeepalive=function(){this._killKeepalive(),this.options.keepaliveMs&&(this.keepaliveTimeout=setTimeout((()=>{this._sendKeepalive().catch((e=>console.error("Error received from keepalive: ",e)))}),this.options.keepaliveMs))},e.exports={JanusPluginHandle:t,JanusSession:n}},497:(e,t,n)=>{var s=n(734);s.JanusSession.prototype.sendOriginal=s.JanusSession.prototype.send,s.JanusSession.prototype.send=function(e,t){return this.sendOriginal(e,t).catch((e=>{if(!(e.message&&e.message.indexOf("timed out")>-1))throw e;console.error("web socket timed out"),NAF.connection.adapter.reconnect()}))};var i=n(963),r=n(833)("naf-janus-adapter:debug"),a=(n(833)("naf-janus-adapter:warn"),n(833)("naf-janus-adapter:error")),o=/^((?!chrome|android).)*safari/i.test(navigator.userAgent);function c(e){var t=Promise.resolve();return function(){var n=Array.prototype.slice.call(arguments);t=t.then((t=>e.apply(this,n)))}}function l(e){return new Promise(((t,n)=>{if("open"===e.readyState)t();else{let s,i;const r=()=>{e.removeEventListener("open",s),e.removeEventListener("error",i)};s=()=>{r(),t()},i=()=>{r(),n()},e.addEventListener("open",s),e.addEventListener("error",i)}}))}const d=""!==document.createElement("video").canPlayType('video/mp4; codecs="avc1.42E01E, mp4a.40.2"'),p={usedtx:1,stereo:0,"sprop-stereo":0},u={iceServers:[{urls:"stun:stun1.l.google.com:19302"},{urls:"stun:stun2.l.google.com:19302"}]};class h{constructor(){this.room=null,this.clientId=null,this.joinToken=null,this.serverUrl=null,this.webRtcOptions={},this.peerConnectionConfig=null,this.ws=null,this.session=null,this.reliableTransport="datachannel",this.unreliableTransport="datachannel",this.initialReconnectionDelay=1e3*Math.random(),this.reconnectionDelay=this.initialReconnectionDelay,this.reconnectionTimeout=null,this.maxReconnectionAttempts=10,this.reconnectionAttempts=0,this.publisher=null,this.occupantIds=[],this.occupants={},this.mediaStreams={},this.localMediaStream=null,this.pendingMediaRequests=new Map,this.pendingOccupants=new Set,this.availableOccupants=[],this.requestedOccupants=null,this.blockedClients=new Map,this.frozenUpdates=new Map,this.timeOffsets=[],this.serverTimeRequests=0,this.avgTimeOffset=0,this.onWebsocketOpen=this.onWebsocketOpen.bind(this),this.onWebsocketClose=this.onWebsocketClose.bind(this),this.onWebsocketMessage=this.onWebsocketMessage.bind(this),this.onDataChannelMessage=this.onDataChannelMessage.bind(this),this.onData=this.onData.bind(this)}setServerUrl(e){this.serverUrl=e}setApp(e){}setRoom(e){this.room=e}setJoinToken(e){this.joinToken=e}setClientId(e){this.clientId=e}setWebRtcOptions(e){this.webRtcOptions=e}setPeerConnectionConfig(e){this.peerConnectionConfig=e}setServerConnectListeners(e,t){this.connectSuccess=e,this.connectFailure=t}setRoomOccupantListener(e){this.onOccupantsChanged=e}setDataChannelListeners(e,t,n){this.onOccupantConnected=e,this.onOccupantDisconnected=t,this.onOccupantMessage=n}setReconnectionListeners(e,t,n){this.onReconnecting=e,this.onReconnected=t,this.onReconnectionError=n}setEventLoops(e){this.loops=e}connect(){r(`connecting to ${this.serverUrl}`);const e=new Promise(((e,t)=>{this.ws=new WebSocket(this.serverUrl,"janus-protocol"),this.session=new s.JanusSession(this.ws.send.bind(this.ws),{timeoutMs:4e4}),this.ws.addEventListener("close",this.onWebsocketClose),this.ws.addEventListener("message",this.onWebsocketMessage),this.wsOnOpen=()=>{this.ws.removeEventListener("open",this.wsOnOpen),this.onWebsocketOpen().then(e).catch(t)},this.ws.addEventListener("open",this.wsOnOpen)}));return Promise.all([e,this.updateTimeOffset()])}disconnect(){r("disconnecting"),clearTimeout(this.reconnectionTimeout),this.removeAllOccupants(),this.publisher&&(this.publisher.conn.close(),this.publisher=null),this.session&&(this.session.dispose(),this.session=null),this.ws&&(this.ws.removeEventListener("open",this.wsOnOpen),this.ws.removeEventListener("close",this.onWebsocketClose),this.ws.removeEventListener("message",this.onWebsocketMessage),this.ws.close(),this.ws=null),this.delayedReconnectTimeout&&(clearTimeout(this.delayedReconnectTimeout),this.delayedReconnectTimeout=null)}isDisconnected(){return null===this.ws}async onWebsocketOpen(){await this.session.create(),this.publisher=await this.createPublisher(),this.connectSuccess(this.clientId);for(let e=0;ethis.reconnect()),this.reconnectionDelay))}reconnect(){this.disconnect(),this.connect().then((()=>{this.reconnectionDelay=this.initialReconnectionDelay,this.reconnectionAttempts=0,this.onReconnected&&this.onReconnected()})).catch((e=>{if(this.reconnectionDelay+=1e3,this.reconnectionAttempts++,this.reconnectionAttempts>this.maxReconnectionAttempts&&this.onReconnectionError)return this.onReconnectionError(new Error("Connection could not be reestablished, exceeded maximum number of reconnection attempts."));console.warn("Error during reconnect, retrying."),console.warn(e),this.onReconnecting&&this.onReconnecting(this.reconnectionDelay),this.reconnectionTimeout=setTimeout((()=>this.reconnect()),this.reconnectionDelay)}))}performDelayedReconnect(){this.delayedReconnectTimeout&&clearTimeout(this.delayedReconnectTimeout),this.delayedReconnectTimeout=setTimeout((()=>{this.delayedReconnectTimeout=null,this.reconnect()}),1e4)}onWebsocketMessage(e){this.session.receive(JSON.parse(e.data))}addAvailableOccupant(e){-1===this.availableOccupants.indexOf(e)&&this.availableOccupants.push(e)}removeAvailableOccupant(e){const t=this.availableOccupants.indexOf(e);-1!==t&&this.availableOccupants.splice(t,1)}syncOccupants(e){if(e&&(this.requestedOccupants=e),this.requestedOccupants){for(let e=0;e5&&await(0,5e3,new Promise((e=>{const t=5e3*Math.random()+0;setTimeout(e,t)})));const t=await this.createSubscriber(e);t&&(this.pendingOccupants.has(e)?(this.pendingOccupants.delete(e),this.occupantIds.push(e),this.occupants[e]=t,this.setMediaStream(e,t.mediaStream),this.onOccupantConnected(e)):t.conn.close())}removeAllOccupants(){this.pendingOccupants.clear();for(let e=this.occupantIds.length-1;e>=0;e--)this.removeOccupant(this.occupantIds[e])}removeOccupant(e){if(this.pendingOccupants.delete(e),this.occupants[e]&&(this.occupants[e].conn.close(),delete this.occupants[e],this.occupantIds.splice(this.occupantIds.indexOf(e),1)),this.mediaStreams[e]&&delete this.mediaStreams[e],this.pendingMediaRequests.has(e)){const t="The user disconnected before the media stream was resolved.";this.pendingMediaRequests.get(e).audio.reject(t),this.pendingMediaRequests.get(e).video.reject(t),this.pendingMediaRequests.delete(e)}this.onOccupantDisconnected(e)}associate(e,t){e.addEventListener("icecandidate",(e=>{t.sendTrickle(e.candidate||null).catch((e=>a("Error trickling ICE: %o",e)))})),e.addEventListener("iceconnectionstatechange",(t=>{"connected"===e.iceConnectionState&&console.log("ICE state changed to connected"),"disconnected"===e.iceConnectionState&&console.warn("ICE state changed to disconnected"),"failed"===e.iceConnectionState&&(console.warn("ICE failure detected. Reconnecting in 10s."),this.performDelayedReconnect())})),e.addEventListener("negotiationneeded",c((n=>{r("Sending new offer for handle: %o",t);var s=e.createOffer().then(this.configurePublisherSdp).then(this.fixSafariIceUFrag),i=s.then((t=>e.setLocalDescription(t))),o=s;return o=o.then(this.fixSafariIceUFrag).then((e=>t.sendJsep(e))).then((t=>e.setRemoteDescription(t.jsep))),Promise.all([i,o]).catch((e=>a("Error negotiating offer: %o",e)))}))),t.on("event",c((n=>{var s=n.jsep;if(s&&"offer"==s.type){r("Accepting new offer for handle: %o",t);var i=e.setRemoteDescription(this.configureSubscriberSdp(s)).then((t=>e.createAnswer())).then(this.fixSafariIceUFrag),o=i.then((t=>e.setLocalDescription(t))),c=i.then((e=>t.sendJsep(e)));return Promise.all([o,c]).catch((e=>a("Error negotiating answer: %o",e)))}return null})))}async createPublisher(){var e=new s.JanusPluginHandle(this.session),t=new RTCPeerConnection(this.peerConnectionConfig||u);r("pub waiting for sfu"),await e.attach("janus.plugin.sfu",this.loops&&this.clientId?parseInt(this.clientId)%this.loops:void 0),this.associate(t,e),r("pub waiting for data channels & webrtcup");var n=new Promise((t=>e.on("webrtcup",t))),i=t.createDataChannel("reliable",{ordered:!0}),a=t.createDataChannel("unreliable",{ordered:!1,maxRetransmits:0});i.addEventListener("message",(e=>this.onDataChannelMessage(e,"janus-reliable"))),a.addEventListener("message",(e=>this.onDataChannelMessage(e,"janus-unreliable"))),await n,await l(i),await l(a),this.localMediaStream&&this.localMediaStream.getTracks().forEach((e=>{t.addTrack(e,this.localMediaStream)})),e.on("event",(e=>{var t=e.plugindata.data;if("join"==t.event&&t.room_id==this.room){if(this.delayedReconnectTimeout)return;this.addAvailableOccupant(t.user_id),this.syncOccupants()}else"leave"==t.event&&t.room_id==this.room?(this.removeAvailableOccupant(t.user_id),this.removeOccupant(t.user_id)):"blocked"==t.event?document.body.dispatchEvent(new CustomEvent("blocked",{detail:{clientId:t.by}})):"unblocked"==t.event?document.body.dispatchEvent(new CustomEvent("unblocked",{detail:{clientId:t.by}})):"data"===t.event&&this.onData(JSON.parse(t.body),"janus-event")})),r("pub waiting for join");var o=await this.sendJoin(e,{notifications:!0,data:!0});if(!o.plugindata.data.success){const e=o.plugindata.data.error;throw console.error(e),t.close(),e}var c=o.plugindata.data.response.users[this.room]||[];return c.includes(this.clientId)&&(console.warn("Janus still has previous session for this client. Reconnecting in 10s."),this.performDelayedReconnect()),r("publisher ready"),{handle:e,initialOccupants:c,reliableChannel:i,unreliableChannel:a,conn:t}}configurePublisherSdp(e){return e.sdp=e.sdp.replace(/a=fmtp:(109|111).*\r\n/g,((e,t)=>{const n=Object.assign(i.parseFmtp(e),p);return i.writeFmtp({payloadType:t,parameters:n})})),e}configureSubscriberSdp(e){return d||-1!==navigator.userAgent.indexOf("HeadlessChrome")&&(e.sdp=e.sdp.replace(/m=video[^]*m=/,"m=")),-1===navigator.userAgent.indexOf("Android")?e.sdp=e.sdp.replace("a=rtcp-fb:107 goog-remb\r\n","a=rtcp-fb:107 goog-remb\r\na=rtcp-fb:107 transport-cc\r\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\r\n"):e.sdp=e.sdp.replace("a=rtcp-fb:107 goog-remb\r\n","a=rtcp-fb:107 goog-remb\r\na=rtcp-fb:107 transport-cc\r\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\r\n"),e}async fixSafariIceUFrag(e){return e.sdp=e.sdp.replace(/[^\r]\na=ice-ufrag/g,"\r\na=ice-ufrag"),e}async createSubscriber(e,t=5){if(-1===this.availableOccupants.indexOf(e))return console.warn(e+": cancelled occupant connection, occupant left before subscription negotation."),null;var n=new s.JanusPluginHandle(this.session),i=new RTCPeerConnection(this.peerConnectionConfig||u);if(r(e+": sub waiting for sfu"),await n.attach("janus.plugin.sfu",this.loops?parseInt(e)%this.loops:void 0),this.associate(i,n),r(e+": sub waiting for join"),-1===this.availableOccupants.indexOf(e))return i.close(),console.warn(e+": cancelled occupant connection, occupant left after attach"),null;let a=!1;const c=new Promise((t=>{const s=setInterval((()=>{-1===this.availableOccupants.indexOf(e)&&(clearInterval(s),t())}),1e3),i=setTimeout((()=>{clearInterval(s),a=!0,t()}),15e3);n.on("webrtcup",(()=>{clearTimeout(i),clearInterval(s),t()}))}));if(await this.sendJoin(n,{media:e}),-1===this.availableOccupants.indexOf(e))return i.close(),console.warn(e+": cancelled occupant connection, occupant left after join"),null;if(r(e+": sub waiting for webrtcup"),await c,-1===this.availableOccupants.indexOf(e))return i.close(),console.warn(e+": cancel occupant connection, occupant left during or after webrtcup"),null;if(a)return i.close(),t>0?(console.warn(e+": webrtc up timed out, retrying"),this.createSubscriber(e,t-1)):(console.warn(e+": webrtc up timed out"),null);o&&!this._iOSHackDelayedInitialPeer&&(await new Promise((e=>setTimeout(e,3e3))),this._iOSHackDelayedInitialPeer=!0);var l=new MediaStream;return i.getReceivers().forEach((e=>{e.track&&l.addTrack(e.track)})),0===l.getTracks().length&&(l=null),r(e+": subscriber ready"),{handle:n,mediaStream:l,conn:i}}sendJoin(e,t){return e.sendMessage({kind:"join",room_id:this.room,user_id:this.clientId,subscribe:t,token:this.joinToken})}toggleFreeze(){this.frozen?this.unfreeze():this.freeze()}freeze(){this.frozen=!0}unfreeze(){this.frozen=!1,this.flushPendingUpdates()}dataForUpdateMultiMessage(e,t){for(let n=0,s=t.data.d.length;nn.owner)return;"r"===s?r&&r.isFirstSync?this.frozenUpdates.delete(i):this.frozenUpdates.set(i,e):r.components&&n.components&&Object.assign(r.components,n.components)}else this.frozenUpdates.set(i,e)}onDataChannelMessage(e,t){this.onData(JSON.parse(e.data),t)}onData(e,t){r.enabled&&r(`DC in: ${e}`),e.dataType&&(e.source=t,this.frozen?this.storeMessage(e):this.onOccupantMessage(null,e.dataType,e.data,e.source))}shouldStartConnectionTo(e){return!0}startStreamConnection(e){}closeStreamConnection(e){}getConnectStatus(e){return this.occupants[e]?NAF.adapters.IS_CONNECTED:NAF.adapters.NOT_CONNECTED}async updateTimeOffset(){if(this.isDisconnected())return;const e=Date.now(),t=await fetch(document.location.href,{method:"HEAD",cache:"no-cache"}),n=new Date(t.headers.get("Date")).getTime()+500,s=Date.now(),i=n+(s-e)/2-s;this.serverTimeRequests++,this.serverTimeRequests<=10?this.timeOffsets.push(i):this.timeOffsets[this.serverTimeRequests%10]=i,this.avgTimeOffset=this.timeOffsets.reduce(((e,t)=>e+t),0)/this.timeOffsets.length,this.serverTimeRequests>10?(r(`new server time offset: ${this.avgTimeOffset}ms`),setTimeout((()=>this.updateTimeOffset()),3e5)):this.updateTimeOffset()}getServerTime(){return Date.now()+this.avgTimeOffset}getMediaStream(e,t="audio"){if(this.mediaStreams[e])return r(`Already had ${t} for ${e}`),Promise.resolve(this.mediaStreams[e][t]);if(r(`Waiting on ${t} for ${e}`),!this.pendingMediaRequests.has(e)){this.pendingMediaRequests.set(e,{});const t=new Promise(((t,n)=>{this.pendingMediaRequests.get(e).audio={resolve:t,reject:n}})),n=new Promise(((t,n)=>{this.pendingMediaRequests.get(e).video={resolve:t,reject:n}}));this.pendingMediaRequests.get(e).audio.promise=t,this.pendingMediaRequests.get(e).video.promise=n,t.catch((t=>console.warn(`${e} getMediaStream Audio Error`,t))),n.catch((t=>console.warn(`${e} getMediaStream Video Error`,t)))}return this.pendingMediaRequests.get(e)[t].promise}setMediaStream(e,t){const n=new MediaStream;try{t.getAudioTracks().forEach((e=>n.addTrack(e)))}catch(t){console.warn(`${e} setMediaStream Audio Error`,t)}const s=new MediaStream;try{t.getVideoTracks().forEach((e=>s.addTrack(e)))}catch(t){console.warn(`${e} setMediaStream Video Error`,t)}this.mediaStreams[e]={audio:n,video:s},this.pendingMediaRequests.has(e)&&(this.pendingMediaRequests.get(e).audio.resolve(n),this.pendingMediaRequests.get(e).video.resolve(s))}getLocalMediaStream(){return this.localMediaStream}async setLocalMediaStream(e){if(this.publisher&&this.publisher.conn){const t=this.publisher.conn.getSenders(),n=[],s=e.getTracks();for(let i=0;inull!=e.track&&e.track.kind==r.kind));null!=a?(a.replaceTrack?await a.replaceTrack(r):(e.removeTrack(a.track),e.addTrack(r)),n.push(a)):n.push(this.publisher.conn.addTrack(r,e))}t.forEach((e=>{n.includes(e)||(e.track.enabled=!1)}))}this.localMediaStream=e,this.setMediaStream(this.clientId,e)}enableMicrophone(e){this.publisher&&this.publisher.conn&&this.publisher.conn.getSenders().forEach((t=>{"audio"==t.track.kind&&(t.track.enabled=e)}))}sendData(e,t,n){if(this.publisher)switch(this.unreliableTransport){case"websocket":1===this.ws.readyState&&this.publisher.handle.sendMessage({kind:"data",body:JSON.stringify({dataType:t,data:n}),whom:e});break;case"datachannel":"open"===this.publisher.unreliableChannel.readyState&&this.publisher.unreliableChannel.send(JSON.stringify({clientId:e,dataType:t,data:n}));break;default:this.unreliableTransport(e,t,n)}else console.warn("sendData called without a publisher")}sendDataGuaranteed(e,t,n){if(this.publisher)switch(this.reliableTransport){case"websocket":1===this.ws.readyState&&this.publisher.handle.sendMessage({kind:"data",body:JSON.stringify({dataType:t,data:n}),whom:e});break;case"datachannel":"open"===this.publisher.reliableChannel.readyState&&this.publisher.reliableChannel.send(JSON.stringify({clientId:e,dataType:t,data:n}));break;default:this.reliableTransport(e,t,n)}else console.warn("sendDataGuaranteed called without a publisher")}broadcastData(e,t){if(this.publisher)switch(this.unreliableTransport){case"websocket":1===this.ws.readyState&&this.publisher.handle.sendMessage({kind:"data",body:JSON.stringify({dataType:e,data:t})});break;case"datachannel":"open"===this.publisher.unreliableChannel.readyState&&this.publisher.unreliableChannel.send(JSON.stringify({dataType:e,data:t}));break;default:this.unreliableTransport(void 0,e,t)}else console.warn("broadcastData called without a publisher")}broadcastDataGuaranteed(e,t){if(this.publisher)switch(this.reliableTransport){case"websocket":1===this.ws.readyState&&this.publisher.handle.sendMessage({kind:"data",body:JSON.stringify({dataType:e,data:t})});break;case"datachannel":"open"===this.publisher.reliableChannel.readyState&&this.publisher.reliableChannel.send(JSON.stringify({dataType:e,data:t}));break;default:this.reliableTransport(void 0,e,t)}else console.warn("broadcastDataGuaranteed called without a publisher")}kick(e,t){return this.publisher.handle.sendMessage({kind:"kick",room_id:this.room,user_id:e,token:t}).then((()=>{document.body.dispatchEvent(new CustomEvent("kicked",{detail:{clientId:e}}))}))}block(e){return this.publisher.handle.sendMessage({kind:"block",whom:e}).then((()=>{this.blockedClients.set(e,!0),document.body.dispatchEvent(new CustomEvent("blocked",{detail:{clientId:e}}))}))}unblock(e){return this.publisher.handle.sendMessage({kind:"unblock",whom:e}).then((()=>{this.blockedClients.delete(e),document.body.dispatchEvent(new CustomEvent("unblocked",{detail:{clientId:e}}))}))}}NAF.adapters.register("janus",h),e.exports=h},833:(e,t,n)=>{t.formatArgs=function(t){if(t[0]=(this.useColors?"%c":"")+this.namespace+(this.useColors?" %c":" ")+t[0]+(this.useColors?"%c ":" ")+"+"+e.exports.humanize(this.diff),!this.useColors)return;const n="color: "+this.color;t.splice(1,0,n,"color: inherit");let s=0,i=0;t[0].replace(/%[a-zA-Z%]/g,(e=>{"%%"!==e&&(s++,"%c"===e&&(i=s))})),t.splice(i,0,n)},t.save=function(e){try{e?t.storage.setItem("debug",e):t.storage.removeItem("debug")}catch(e){}},t.load=function(){let e;try{e=t.storage.getItem("debug")}catch(e){}return!e&&"undefined"!=typeof process&&"env"in process&&(e=process.env.DEBUG),e},t.useColors=function(){return!("undefined"==typeof window||!window.process||"renderer"!==window.process.type&&!window.process.__nwjs)||("undefined"==typeof navigator||!navigator.userAgent||!navigator.userAgent.toLowerCase().match(/(edge|trident)\/(\d+)/))&&("undefined"!=typeof document&&document.documentElement&&document.documentElement.style&&document.documentElement.style.WebkitAppearance||"undefined"!=typeof window&&window.console&&(window.console.firebug||window.console.exception&&window.console.table)||"undefined"!=typeof navigator&&navigator.userAgent&&navigator.userAgent.toLowerCase().match(/firefox\/(\d+)/)&&parseInt(RegExp.$1,10)>=31||"undefined"!=typeof navigator&&navigator.userAgent&&navigator.userAgent.toLowerCase().match(/applewebkit\/(\d+)/))},t.storage=function(){try{return localStorage}catch(e){}}(),t.destroy=(()=>{let e=!1;return()=>{e||(e=!0,console.warn("Instance method `debug.destroy()` is deprecated and no longer does anything. 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n={codecs:[],headerExtensions:[],fecMechanisms:[],rtcp:[]},s=t.splitLines(e)[0].split(" ");n.profile=s[2];for(let i=3;i{n.headerExtensions.push(t.parseExtmap(e))}));const i=t.matchPrefix(e,"a=rtcp-fb:* ").map(t.parseRtcpFb);return n.codecs.forEach((e=>{i.forEach((t=>{e.rtcpFeedback.find((e=>e.type===t.type&&e.parameter===t.parameter))||e.rtcpFeedback.push(t)}))})),n},t.writeRtpDescription=function(e,n){let s="";s+="m="+e+" ",s+=n.codecs.length>0?"9":"0",s+=" "+(n.profile||"UDP/TLS/RTP/SAVPF")+" ",s+=n.codecs.map((e=>void 0!==e.preferredPayloadType?e.preferredPayloadType:e.payloadType)).join(" ")+"\r\n",s+="c=IN IP4 0.0.0.0\r\n",s+="a=rtcp:9 IN IP4 0.0.0.0\r\n",n.codecs.forEach((e=>{s+=t.writeRtpMap(e),s+=t.writeFmtp(e),s+=t.writeRtcpFb(e)}));let i=0;return n.codecs.forEach((e=>{e.maxptime>i&&(i=e.maxptime)})),i>0&&(s+="a=maxptime:"+i+"\r\n"),n.headerExtensions&&n.headerExtensions.forEach((e=>{s+=t.writeExtmap(e)})),s},t.parseRtpEncodingParameters=function(e){const n=[],s=t.parseRtpParameters(e),i=-1!==s.fecMechanisms.indexOf("RED"),r=-1!==s.fecMechanisms.indexOf("ULPFEC"),a=t.matchPrefix(e,"a=ssrc:").map((e=>t.parseSsrcMedia(e))).filter((e=>"cname"===e.attribute)),o=a.length>0&&a[0].ssrc;let c;const l=t.matchPrefix(e,"a=ssrc-group:FID").map((e=>e.substring(17).split(" ").map((e=>parseInt(e,10)))));l.length>0&&l[0].length>1&&l[0][0]===o&&(c=l[0][1]),s.codecs.forEach((e=>{if("RTX"===e.name.toUpperCase()&&e.parameters.apt){let t={ssrc:o,codecPayloadType:parseInt(e.parameters.apt,10)};o&&c&&(t.rtx={ssrc:c}),n.push(t),i&&(t=JSON.parse(JSON.stringify(t)),t.fec={ssrc:o,mechanism:r?"red+ulpfec":"red"},n.push(t))}})),0===n.length&&o&&n.push({ssrc:o});let d=t.matchPrefix(e,"b=");return d.length&&(d=0===d[0].indexOf("b=TIAS:")?parseInt(d[0].substring(7),10):0===d[0].indexOf("b=AS:")?1e3*parseInt(d[0].substring(5),10)*.95-16e3:void 0,n.forEach((e=>{e.maxBitrate=d}))),n},t.parseRtcpParameters=function(e){const 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s=t.splitLines(e);for(let e=0;e{var e={734:e=>{function t(e){this.session=e,this.id=void 0}function n(e,t){this.output=e,this.id=void 0,this.nextTxId=0,this.txns={},this.eventHandlers={},this.options=Object.assign({verbose:!1,timeoutMs:1e4,keepaliveMs:3e4},t)}t.prototype.attach=function(e,t){var n={plugin:e,loop_index:t,"force-bundle":!0,"force-rtcp-mux":!0};return this.session.send("attach",n).then((e=>(this.id=e.data.id,e)))},t.prototype.detach=function(){return this.send("detach")},t.prototype.on=function(e,t){return this.session.on(e,(e=>{e.sender==this.id&&t(e)}))},t.prototype.send=function(e,t){return this.session.send(e,Object.assign({handle_id:this.id},t))},t.prototype.sendMessage=function(e){return this.send("message",{body:e})},t.prototype.sendJsep=function(e){return this.send("message",{body:{},jsep:e})},t.prototype.sendTrickle=function(e){return this.send("trickle",{candidate:e})},n.prototype.create=function(){return 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h{constructor(){this.room=null,this.clientId=null,this.joinToken=null,this.serverUrl=null,this.webRtcOptions={},this.peerConnectionConfig=null,this.ws=null,this.session=null,this.reliableTransport="datachannel",this.unreliableTransport="datachannel",this.initialReconnectionDelay=1e3*Math.random(),this.reconnectionDelay=this.initialReconnectionDelay,this.reconnectionTimeout=null,this.maxReconnectionAttempts=10,this.reconnectionAttempts=0,this.isReconnecting=!1,this.publisher=null,this.occupantIds=[],this.occupants={},this.mediaStreams={},this.localMediaStream=null,this.pendingMediaRequests=new Map,this.pendingOccupants=new Set,this.availableOccupants=[],this.requestedOccupants=null,this.blockedClients=new Map,this.frozenUpdates=new Map,this.timeOffsets=[],this.serverTimeRequests=0,this.avgTimeOffset=0,this.onWebsocketOpen=this.onWebsocketOpen.bind(this),this.onWebsocketClose=this.onWebsocketClose.bind(this),this.onWebsocketMessage=this.onWebsocketMessage.bind(this),this.onDataChannelMessage=this.onDataChannelMessage.bind(this),this.onData=this.onData.bind(this)}setServerUrl(e){this.serverUrl=e}setApp(e){}setRoom(e){this.room=e}setJoinToken(e){this.joinToken=e}setClientId(e){this.clientId=e}setWebRtcOptions(e){this.webRtcOptions=e}setPeerConnectionConfig(e){this.peerConnectionConfig=e}setServerConnectListeners(e,t){this.connectSuccess=e,this.connectFailure=t}setRoomOccupantListener(e){this.onOccupantsChanged=e}setDataChannelListeners(e,t,n){this.onOccupantConnected=e,this.onOccupantDisconnected=t,this.onOccupantMessage=n}setReconnectionListeners(e,t,n){this.onReconnecting=e,this.onReconnected=t,this.onReconnectionError=n}setEventLoops(e){this.loops=e}connect(){"/"===this.serverUrl&&(this.serverUrl="/janus"),"/janus"===this.serverUrl&&("https:"===location.protocol?this.serverUrl="wss://"+location.host+"/janus":this.serverUrl="ws://"+location.host+"/janus"),r(`connecting to ${this.serverUrl}`);const e=new Promise(((e,t)=>{this.ws=new WebSocket(this.serverUrl,"janus-protocol"),this.session=new s.JanusSession(this.ws.send.bind(this.ws),{timeoutMs:4e4}),this.websocketConnectionPromise={},this.websocketConnectionPromise.resolve=e,this.websocketConnectionPromise.reject=t,this.ws.addEventListener("close",this.onWebsocketClose),this.ws.addEventListener("message",this.onWebsocketMessage),this.wsOnOpen=()=>{this.ws.removeEventListener("open",this.wsOnOpen),this.onWebsocketOpen().then(e).catch(t)},this.ws.addEventListener("open",this.wsOnOpen)}));return Promise.all([e,this.updateTimeOffset()])}disconnect(){r("disconnecting"),clearTimeout(this.reconnectionTimeout),this.removeAllOccupants(),this.publisher&&(this.publisher.conn.close(),this.publisher=null),this.session&&(this.session.dispose(),this.session=null),this.ws&&(this.ws.removeEventListener("open",this.wsOnOpen),this.ws.removeEventListener("close",this.onWebsocketClose),this.ws.removeEventListener("message",this.onWebsocketMessage),this.ws.close(),this.ws=null),this.delayedReconnectTimeout&&(clearTimeout(this.delayedReconnectTimeout),this.delayedReconnectTimeout=null)}isDisconnected(){return null===this.ws}async onWebsocketOpen(){await this.session.create(),this.publisher=await this.createPublisher(),this.connectSuccess(this.clientId);for(let e=0;ethis.reconnect()),this.reconnectionDelay)))}reconnect(){this.disconnect(),this.connect().then((()=>{this.reconnectionDelay=this.initialReconnectionDelay,this.reconnectionAttempts=0,this.isReconnecting=!1,this.onReconnected&&this.onReconnected()})).catch((e=>{if(this.reconnectionDelay+=1e3,this.reconnectionAttempts++,this.reconnectionAttempts>this.maxReconnectionAttempts){const e=new Error("Connection could not be reestablished, exceeded maximum number of reconnection attempts.");return this.onReconnectionError?this.onReconnectionError(e):void console.warn(e)}console.warn("Error during reconnect, retrying."),console.warn(e),this.onReconnecting&&this.onReconnecting(this.reconnectionDelay),this.reconnectionTimeout=setTimeout((()=>this.reconnect()),this.reconnectionDelay)}))}performDelayedReconnect(){this.delayedReconnectTimeout&&clearTimeout(this.delayedReconnectTimeout),this.delayedReconnectTimeout=setTimeout((()=>{this.delayedReconnectTimeout=null,this.reconnect()}),1e4)}onWebsocketMessage(e){this.session.receive(JSON.parse(e.data))}addAvailableOccupant(e){-1===this.availableOccupants.indexOf(e)&&this.availableOccupants.push(e)}removeAvailableOccupant(e){const t=this.availableOccupants.indexOf(e);-1!==t&&this.availableOccupants.splice(t,1)}syncOccupants(e){if(e&&(this.requestedOccupants=e),this.requestedOccupants){for(let e=0;e5&&await new Promise((e=>{const t=5e3*Math.random()+0;setTimeout(e,t)}));const t=await this.createSubscriber(e);t&&(this.pendingOccupants.has(e)?(this.pendingOccupants.delete(e),this.occupantIds.push(e),this.occupants[e]=t,this.setMediaStream(e,t.mediaStream),this.onOccupantConnected(e)):t.conn.close())}removeAllOccupants(){this.pendingOccupants.clear();for(let e=this.occupantIds.length-1;e>=0;e--)this.removeOccupant(this.occupantIds[e])}removeOccupant(e){if(this.pendingOccupants.delete(e),this.occupants[e]&&(this.occupants[e].conn.close(),delete this.occupants[e],this.occupantIds.splice(this.occupantIds.indexOf(e),1)),this.mediaStreams[e]&&delete this.mediaStreams[e],this.pendingMediaRequests.has(e)){const t="The user disconnected before the media stream was resolved.";this.pendingMediaRequests.get(e).audio.reject(t),this.pendingMediaRequests.get(e).video.reject(t),this.pendingMediaRequests.delete(e)}this.onOccupantDisconnected(e)}associate(e,t){e.addEventListener("icecandidate",(e=>{t.sendTrickle(e.candidate||null).catch((e=>a("Error trickling ICE: %o",e)))})),e.addEventListener("iceconnectionstatechange",(t=>{"connected"===e.iceConnectionState&&console.log("ICE state changed to connected"),"disconnected"===e.iceConnectionState&&console.warn("ICE state changed to disconnected"),"failed"===e.iceConnectionState&&(console.warn("ICE failure detected. Reconnecting in 10s."),this.performDelayedReconnect())})),e.addEventListener("negotiationneeded",c((n=>{r("Sending new offer for handle: %o",t);var s=e.createOffer().then(this.configurePublisherSdp).then(this.fixSafariIceUFrag),i=s.then((t=>e.setLocalDescription(t))),o=s;return o=o.then(this.fixSafariIceUFrag).then((e=>t.sendJsep(e))).then((t=>e.setRemoteDescription(t.jsep))),Promise.all([i,o]).catch((e=>a("Error negotiating offer: %o",e)))}))),t.on("event",c((n=>{var s=n.jsep;if(s&&"offer"==s.type){r("Accepting new offer for handle: %o",t);var i=e.setRemoteDescription(this.configureSubscriberSdp(s)).then((t=>e.createAnswer())).then(this.fixSafariIceUFrag),o=i.then((t=>e.setLocalDescription(t))),c=i.then((e=>t.sendJsep(e)));return Promise.all([o,c]).catch((e=>a("Error negotiating answer: %o",e)))}return null})))}async createPublisher(){var e=new s.JanusPluginHandle(this.session),t=new RTCPeerConnection(this.peerConnectionConfig||p);r("pub waiting for sfu"),await e.attach("janus.plugin.sfu",this.loops&&this.clientId?parseInt(this.clientId)%this.loops:void 0),this.associate(t,e),r("pub waiting for data channels & webrtcup");var n=new Promise((t=>e.on("webrtcup",t))),i=t.createDataChannel("reliable",{ordered:!0}),a=t.createDataChannel("unreliable",{ordered:!1,maxRetransmits:0});i.addEventListener("message",(e=>this.onDataChannelMessage(e,"janus-reliable"))),a.addEventListener("message",(e=>this.onDataChannelMessage(e,"janus-unreliable"))),await n,await l(i),await l(a),this.localMediaStream&&this.localMediaStream.getTracks().forEach((e=>{t.addTrack(e,this.localMediaStream)})),e.on("event",(e=>{var t=e.plugindata.data;if("join"==t.event&&t.room_id==this.room){if(this.delayedReconnectTimeout)return;this.addAvailableOccupant(t.user_id),this.syncOccupants()}else"leave"==t.event&&t.room_id==this.room?(this.removeAvailableOccupant(t.user_id),this.removeOccupant(t.user_id)):"blocked"==t.event?document.body.dispatchEvent(new CustomEvent("blocked",{detail:{clientId:t.by}})):"unblocked"==t.event?document.body.dispatchEvent(new CustomEvent("unblocked",{detail:{clientId:t.by}})):"data"===t.event&&this.onData(JSON.parse(t.body),"janus-event")})),r("pub waiting for join");var o=await this.sendJoin(e,{notifications:!0,data:!0});if(!o.plugindata.data.success){const e=o.plugindata.data.error;throw console.error(e),t.close(),e}var c=o.plugindata.data.response.users[this.room]||[];return c.includes(this.clientId)&&(console.warn("Janus still has previous session for this client. Reconnecting in 10s."),this.performDelayedReconnect()),r("publisher ready"),{handle:e,initialOccupants:c,reliableChannel:i,unreliableChannel:a,conn:t}}configurePublisherSdp(e){return e.sdp=e.sdp.replace(/a=fmtp:(109|111).*\r\n/g,((e,t)=>{const n=Object.assign(i.parseFmtp(e),u);return i.writeFmtp({payloadType:t,parameters:n})})),e}configureSubscriberSdp(e){return d||-1!==navigator.userAgent.indexOf("HeadlessChrome")&&(e.sdp=e.sdp.replace(/m=video[^]*m=/,"m=")),-1===navigator.userAgent.indexOf("Android")?e.sdp=e.sdp.replace("a=rtcp-fb:107 goog-remb\r\n","a=rtcp-fb:107 goog-remb\r\na=rtcp-fb:107 transport-cc\r\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\r\n"):e.sdp=e.sdp.replace("a=rtcp-fb:107 goog-remb\r\n","a=rtcp-fb:107 goog-remb\r\na=rtcp-fb:107 transport-cc\r\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\r\n"),e}async fixSafariIceUFrag(e){return e.sdp=e.sdp.replace(/[^\r]\na=ice-ufrag/g,"\r\na=ice-ufrag"),e}async createSubscriber(e,t=5){if(-1===this.availableOccupants.indexOf(e))return console.warn(e+": cancelled occupant connection, occupant left before subscription negotation."),null;var n=new s.JanusPluginHandle(this.session),i=new RTCPeerConnection(this.peerConnectionConfig||p);if(r(e+": sub waiting for sfu"),await n.attach("janus.plugin.sfu",this.loops?parseInt(e)%this.loops:void 0),this.associate(i,n),r(e+": sub waiting for join"),-1===this.availableOccupants.indexOf(e))return i.close(),console.warn(e+": cancelled occupant connection, occupant left after attach"),null;let a=!1;const c=new Promise((t=>{const s=setInterval((()=>{-1===this.availableOccupants.indexOf(e)&&(clearInterval(s),t())}),1e3),i=setTimeout((()=>{clearInterval(s),a=!0,t()}),15e3);n.on("webrtcup",(()=>{clearTimeout(i),clearInterval(s),t()}))}));if(await this.sendJoin(n,{media:e}),-1===this.availableOccupants.indexOf(e))return i.close(),console.warn(e+": cancelled occupant connection, occupant left after join"),null;if(r(e+": sub waiting for webrtcup"),await c,-1===this.availableOccupants.indexOf(e))return i.close(),console.warn(e+": cancel occupant connection, occupant left during or after webrtcup"),null;if(a)return i.close(),t>0?(console.warn(e+": webrtc up timed out, retrying"),this.createSubscriber(e,t-1)):(console.warn(e+": webrtc up timed out"),null);o&&!this._iOSHackDelayedInitialPeer&&(await new Promise((e=>setTimeout(e,3e3))),this._iOSHackDelayedInitialPeer=!0);var l=new MediaStream;return i.getReceivers().forEach((e=>{e.track&&l.addTrack(e.track)})),0===l.getTracks().length&&(l=null),r(e+": subscriber ready"),{handle:n,mediaStream:l,conn:i}}sendJoin(e,t){return e.sendMessage({kind:"join",room_id:this.room,user_id:this.clientId,subscribe:t,token:this.joinToken})}toggleFreeze(){this.frozen?this.unfreeze():this.freeze()}freeze(){this.frozen=!0}unfreeze(){this.frozen=!1,this.flushPendingUpdates()}dataForUpdateMultiMessage(e,t){for(let n=0,s=t.data.d.length;nn.owner)return;"r"===s?r&&r.isFirstSync?this.frozenUpdates.delete(i):this.frozenUpdates.set(i,e):r.components&&n.components&&Object.assign(r.components,n.components)}else this.frozenUpdates.set(i,e)}onDataChannelMessage(e,t){this.onData(JSON.parse(e.data),t)}onData(e,t){r.enabled&&r(`DC in: ${e}`),e.dataType&&(e.source=t,this.frozen?this.storeMessage(e):this.onOccupantMessage(null,e.dataType,e.data,e.source))}shouldStartConnectionTo(e){return!0}startStreamConnection(e){}closeStreamConnection(e){}getConnectStatus(e){return this.occupants[e]?NAF.adapters.IS_CONNECTED:NAF.adapters.NOT_CONNECTED}async updateTimeOffset(){if(this.isDisconnected())return;const e=Date.now(),t=await 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t=this.publisher.conn.getSenders(),n=[],s=e.getTracks();for(let i=0;inull!=e.track&&e.track.kind==r.kind));null!=a?(a.replaceTrack?await a.replaceTrack(r):(e.removeTrack(a.track),e.addTrack(r)),n.push(a)):n.push(this.publisher.conn.addTrack(r,e))}t.forEach((e=>{n.includes(e)||(e.track.enabled=!1)}))}this.localMediaStream=e,this.setMediaStream(this.clientId,e)}enableMicrophone(e){this.publisher&&this.publisher.conn&&this.publisher.conn.getSenders().forEach((t=>{"audio"==t.track.kind&&(t.track.enabled=e)}))}sendData(e,t,n){if(this.publisher)switch(this.unreliableTransport){case"websocket":1===this.ws.readyState&&this.publisher.handle.sendMessage({kind:"data",body:JSON.stringify({dataType:t,data:n}),whom:e});break;case"datachannel":"open"===this.publisher.unreliableChannel.readyState&&this.publisher.unreliableChannel.send(JSON.stringify({clientId:e,dataType:t,data:n}));break;default:this.unreliableTransport(e,t,n)}else console.warn("sendData called without a 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Note that upon destruction, Janus will also close the signalling transport (if applicable) and\n * any open WebRTC connections.\n **/\nJanusSession.prototype.destroy = function() {\n return this.send(\"destroy\").then((resp) => {\n this.dispose();\n return resp;\n });\n};\n\n/**\n * Disposes of this session in a way such that no further incoming signalling messages will be processed.\n * Outstanding transactions will be rejected.\n **/\nJanusSession.prototype.dispose = function() {\n this._killKeepalive();\n this.eventHandlers = {};\n for (var txId in this.txns) {\n if (this.txns.hasOwnProperty(txId)) {\n var txn = this.txns[txId];\n clearTimeout(txn.timeout);\n txn.reject(new Error(\"Janus session was disposed.\"));\n delete this.txns[txId];\n }\n }\n};\n\n/**\n * Whether this signal represents an error, and the associated promise (if any) should be rejected.\n * Users should override this to handle any custom plugin-specific error conventions.\n **/\nJanusSession.prototype.isError = function(signal) {\n return signal.janus === \"error\";\n};\n\n/** Registers a callback to be fired upon the reception of any incoming Janus signals for this session with the\n * `janus` attribute equal to `ev`.\n **/\nJanusSession.prototype.on = function(ev, callback) {\n var handlers = this.eventHandlers[ev];\n if (handlers == null) {\n handlers = this.eventHandlers[ev] = [];\n }\n handlers.push(callback);\n};\n\n/**\n * Callback for receiving JSON signalling messages pertinent to this session. If the signals are responses to previously\n * sent signals, the promises for the outgoing signals will be resolved or rejected appropriately with this signal as an\n * argument.\n *\n * External callers should call this function every time a new signal arrives on the transport; for example, in a\n * WebSocket's `message` event, or when a new datum shows up in an HTTP long-polling response.\n **/\nJanusSession.prototype.receive = function(signal) {\n if (this.options.verbose) {\n this._logIncoming(signal);\n }\n if (signal.session_id != this.id) {\n console.warn(\"Incorrect session ID received in Janus signalling message: was \" + signal.session_id + \", expected \" + this.id + \".\");\n }\n\n var responseType = signal.janus;\n var handlers = this.eventHandlers[responseType];\n if (handlers != null) {\n for (var i = 0; i < handlers.length; i++) {\n handlers[i](signal);\n }\n }\n\n if (signal.transaction != null) {\n var txn = this.txns[signal.transaction];\n if (txn == null) {\n // this is a response to a transaction that wasn't caused via JanusSession.send, or a plugin replied twice to a\n // single request, or the session was disposed, or something else that isn't under our purview; that's fine\n return;\n }\n\n if (responseType === \"ack\" && txn.type == \"message\") {\n // this is an ack of an asynchronously-processed plugin request, we should wait to resolve the promise until the\n // actual response comes in\n return;\n }\n\n clearTimeout(txn.timeout);\n\n delete this.txns[signal.transaction];\n (this.isError(signal) ? txn.reject : txn.resolve)(signal);\n }\n};\n\n/**\n * Sends a signal associated with this session, beginning a new transaction. Returns a promise that will be resolved or\n * rejected when a response is received in the same transaction, or when no response is received within the session\n * timeout.\n **/\nJanusSession.prototype.send = function(type, signal) {\n signal = Object.assign({ transaction: (this.nextTxId++).toString() }, signal);\n return new Promise((resolve, reject) => {\n var timeout = null;\n if (this.options.timeoutMs) {\n timeout = setTimeout(() => {\n delete this.txns[signal.transaction];\n reject(new Error(\"Signalling transaction with txid \" + signal.transaction + \" timed out.\"));\n }, this.options.timeoutMs);\n }\n this.txns[signal.transaction] = { resolve: resolve, reject: reject, timeout: timeout, type: type };\n this._transmit(type, signal);\n });\n};\n\nJanusSession.prototype._transmit = function(type, signal) {\n signal = Object.assign({ janus: type }, signal);\n\n if (this.id != null) { // this.id is undefined in the special case when we're sending the session create message\n signal = Object.assign({ session_id: this.id }, signal);\n }\n\n if (this.options.verbose) {\n this._logOutgoing(signal);\n }\n\n this.output(JSON.stringify(signal));\n this._resetKeepalive();\n};\n\nJanusSession.prototype._logOutgoing = function(signal) {\n var kind = signal.janus;\n if (kind === \"message\" && signal.jsep) {\n kind = signal.jsep.type;\n }\n var message = \"> Outgoing Janus \" + (kind || \"signal\") + \" (#\" + signal.transaction + \"): \";\n console.debug(\"%c\" + message, \"color: #040\", signal);\n};\n\nJanusSession.prototype._logIncoming = function(signal) {\n var kind = signal.janus;\n var message = signal.transaction ?\n \"< Incoming Janus \" + (kind || \"signal\") + \" (#\" + signal.transaction + \"): \" :\n \"< Incoming Janus \" + (kind || \"signal\") + \": \";\n console.debug(\"%c\" + message, \"color: #004\", signal);\n};\n\nJanusSession.prototype._sendKeepalive = function() {\n return this.send(\"keepalive\");\n};\n\nJanusSession.prototype._killKeepalive = function() {\n clearTimeout(this.keepaliveTimeout);\n};\n\nJanusSession.prototype._resetKeepalive = function() {\n this._killKeepalive();\n if (this.options.keepaliveMs) {\n this.keepaliveTimeout = setTimeout(() => {\n this._sendKeepalive().catch(e => console.error(\"Error received from keepalive: \", e));\n }, this.options.keepaliveMs);\n }\n};\n\nmodule.exports = {\n JanusPluginHandle,\n JanusSession\n};\n","/* global NAF */\nvar mj = require(\"@networked-aframe/minijanus\");\nmj.JanusSession.prototype.sendOriginal = mj.JanusSession.prototype.send;\nmj.JanusSession.prototype.send = function(type, signal) {\n return this.sendOriginal(type, signal).catch((e) => {\n if (e.message && e.message.indexOf(\"timed out\") > -1) {\n console.error(\"web socket timed out\");\n NAF.connection.adapter.reconnect();\n } else {\n throw(e);\n }\n });\n}\n\nvar sdpUtils = require(\"sdp\");\nvar debug = require(\"debug\")(\"naf-janus-adapter:debug\");\nvar warn = require(\"debug\")(\"naf-janus-adapter:warn\");\nvar error = require(\"debug\")(\"naf-janus-adapter:error\");\nvar isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);\n\nconst SUBSCRIBE_TIMEOUT_MS = 15000;\n\nconst AVAILABLE_OCCUPANTS_THRESHOLD = 5;\nconst MAX_SUBSCRIBE_DELAY = 5000;\n\nfunction randomDelay(min, max) {\n return new Promise(resolve => {\n const delay = Math.random() * (max - min) + min;\n setTimeout(resolve, delay);\n });\n}\n\nfunction debounce(fn) {\n var curr = Promise.resolve();\n return function() {\n var args = Array.prototype.slice.call(arguments);\n curr = curr.then(_ => fn.apply(this, args));\n };\n}\n\nfunction randomUint() {\n return Math.floor(Math.random() * Number.MAX_SAFE_INTEGER);\n}\n\nfunction untilDataChannelOpen(dataChannel) {\n return new Promise((resolve, reject) => {\n if (dataChannel.readyState === \"open\") {\n resolve();\n } else {\n let resolver, rejector;\n\n const clear = () => {\n dataChannel.removeEventListener(\"open\", resolver);\n dataChannel.removeEventListener(\"error\", rejector);\n };\n\n resolver = () => {\n clear();\n resolve();\n };\n rejector = () => {\n clear();\n reject();\n };\n\n dataChannel.addEventListener(\"open\", resolver);\n dataChannel.addEventListener(\"error\", rejector);\n }\n });\n}\n\nconst isH264VideoSupported = (() => {\n const video = document.createElement(\"video\");\n return video.canPlayType('video/mp4; codecs=\"avc1.42E01E, mp4a.40.2\"') !== \"\";\n})();\n\nconst OPUS_PARAMETERS = {\n // indicates that we want to enable DTX to elide silence packets\n usedtx: 1,\n // indicates that we prefer to receive mono audio (important for voip profile)\n stereo: 0,\n // indicates that we prefer to send mono audio (important for voip profile)\n \"sprop-stereo\": 0\n};\n\nconst DEFAULT_PEER_CONNECTION_CONFIG = {\n iceServers: [{ urls: \"stun:stun1.l.google.com:19302\" }, { urls: \"stun:stun2.l.google.com:19302\" }]\n};\n\nconst WS_NORMAL_CLOSURE = 1000;\n\nclass JanusAdapter {\n constructor() {\n this.room = null;\n // We expect the consumer to set a client id before connecting.\n this.clientId = null;\n this.joinToken = null;\n\n this.serverUrl = null;\n this.webRtcOptions = {};\n this.peerConnectionConfig = null;\n this.ws = null;\n this.session = null;\n this.reliableTransport = \"datachannel\";\n this.unreliableTransport = \"datachannel\";\n\n // In the event the server restarts and all clients lose connection, reconnect with\n // some random jitter added to prevent simultaneous reconnection requests.\n this.initialReconnectionDelay = 1000 * Math.random();\n this.reconnectionDelay = this.initialReconnectionDelay;\n this.reconnectionTimeout = null;\n this.maxReconnectionAttempts = 10;\n this.reconnectionAttempts = 0;\n\n this.publisher = null;\n this.occupantIds = [];\n this.occupants = {};\n this.mediaStreams = {};\n this.localMediaStream = null;\n this.pendingMediaRequests = new Map();\n\n this.pendingOccupants = new Set();\n this.availableOccupants = [];\n this.requestedOccupants = null;\n\n this.blockedClients = new Map();\n this.frozenUpdates = new Map();\n\n this.timeOffsets = [];\n this.serverTimeRequests = 0;\n this.avgTimeOffset = 0;\n\n this.onWebsocketOpen = this.onWebsocketOpen.bind(this);\n this.onWebsocketClose = this.onWebsocketClose.bind(this);\n this.onWebsocketMessage = this.onWebsocketMessage.bind(this);\n this.onDataChannelMessage = this.onDataChannelMessage.bind(this);\n this.onData = this.onData.bind(this);\n }\n\n setServerUrl(url) {\n this.serverUrl = url;\n }\n\n setApp(app) {}\n\n setRoom(roomName) {\n this.room = roomName;\n }\n\n setJoinToken(joinToken) {\n this.joinToken = joinToken;\n }\n\n setClientId(clientId) {\n this.clientId = clientId;\n }\n\n setWebRtcOptions(options) {\n this.webRtcOptions = options;\n }\n\n setPeerConnectionConfig(peerConnectionConfig) {\n this.peerConnectionConfig = peerConnectionConfig;\n }\n\n setServerConnectListeners(successListener, failureListener) {\n this.connectSuccess = successListener;\n this.connectFailure = failureListener;\n }\n\n setRoomOccupantListener(occupantListener) {\n this.onOccupantsChanged = occupantListener;\n }\n\n setDataChannelListeners(openListener, closedListener, messageListener) {\n this.onOccupantConnected = openListener;\n this.onOccupantDisconnected = closedListener;\n this.onOccupantMessage = messageListener;\n }\n\n setReconnectionListeners(reconnectingListener, reconnectedListener, reconnectionErrorListener) {\n // onReconnecting is called with the number of milliseconds until the next reconnection attempt\n this.onReconnecting = reconnectingListener;\n // onReconnected is called when the connection has been reestablished\n this.onReconnected = reconnectedListener;\n // onReconnectionError is called with an error when maxReconnectionAttempts has been reached\n this.onReconnectionError = reconnectionErrorListener;\n }\n\n setEventLoops(loops) {\n this.loops = loops;\n }\n\n connect() {\n debug(`connecting to ${this.serverUrl}`);\n\n const websocketConnection = new Promise((resolve, reject) => {\n this.ws = new WebSocket(this.serverUrl, \"janus-protocol\");\n\n this.session = new mj.JanusSession(this.ws.send.bind(this.ws), { timeoutMs: 40000 });\n\n this.ws.addEventListener(\"close\", this.onWebsocketClose);\n this.ws.addEventListener(\"message\", this.onWebsocketMessage);\n\n this.wsOnOpen = () => {\n this.ws.removeEventListener(\"open\", this.wsOnOpen);\n this.onWebsocketOpen()\n .then(resolve)\n .catch(reject);\n };\n\n this.ws.addEventListener(\"open\", this.wsOnOpen);\n });\n\n return Promise.all([websocketConnection, this.updateTimeOffset()]);\n }\n\n disconnect() {\n debug(`disconnecting`);\n\n clearTimeout(this.reconnectionTimeout);\n\n this.removeAllOccupants();\n\n if (this.publisher) {\n // Close the publisher peer connection. Which also detaches the plugin handle.\n this.publisher.conn.close();\n this.publisher = null;\n }\n\n if (this.session) {\n this.session.dispose();\n this.session = null;\n }\n\n if (this.ws) {\n this.ws.removeEventListener(\"open\", this.wsOnOpen);\n this.ws.removeEventListener(\"close\", this.onWebsocketClose);\n this.ws.removeEventListener(\"message\", this.onWebsocketMessage);\n this.ws.close();\n this.ws = null;\n }\n\n // Now that all RTCPeerConnection closed, be sure to not call\n // reconnect() again via performDelayedReconnect if previous\n // RTCPeerConnection was in the failed state.\n if (this.delayedReconnectTimeout) {\n clearTimeout(this.delayedReconnectTimeout);\n this.delayedReconnectTimeout = null;\n }\n }\n\n isDisconnected() {\n return this.ws === null;\n }\n\n async onWebsocketOpen() {\n // Create the Janus Session\n await this.session.create();\n\n // Attach the SFU Plugin and create a RTCPeerConnection for the publisher.\n // The publisher sends audio and opens two bidirectional data channels.\n // One reliable datachannel and one unreliable.\n this.publisher = await this.createPublisher();\n\n // Call the naf connectSuccess callback before we start receiving WebRTC messages.\n this.connectSuccess(this.clientId);\n\n for (let i = 0; i < this.publisher.initialOccupants.length; i++) {\n const occupantId = this.publisher.initialOccupants[i];\n if (occupantId === this.clientId) continue; // Happens during non-graceful reconnects due to zombie sessions\n this.addAvailableOccupant(occupantId);\n }\n\n this.syncOccupants();\n }\n\n onWebsocketClose(event) {\n // The connection was closed successfully. Don't try to reconnect.\n if (event.code === WS_NORMAL_CLOSURE) {\n return;\n }\n\n console.warn(\"Janus websocket closed unexpectedly.\");\n if (this.onReconnecting) {\n this.onReconnecting(this.reconnectionDelay);\n }\n\n this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay);\n }\n\n reconnect() {\n // Dispose of all networked entities and other resources tied to the session.\n this.disconnect();\n\n this.connect()\n .then(() => {\n this.reconnectionDelay = this.initialReconnectionDelay;\n this.reconnectionAttempts = 0;\n\n if (this.onReconnected) {\n this.onReconnected();\n }\n })\n .catch(error => {\n this.reconnectionDelay += 1000;\n this.reconnectionAttempts++;\n\n if (this.reconnectionAttempts > this.maxReconnectionAttempts && this.onReconnectionError) {\n return this.onReconnectionError(\n new Error(\"Connection could not be reestablished, exceeded maximum number of reconnection attempts.\")\n );\n }\n\n console.warn(\"Error during reconnect, retrying.\");\n console.warn(error);\n\n if (this.onReconnecting) {\n this.onReconnecting(this.reconnectionDelay);\n }\n\n this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay);\n });\n }\n\n performDelayedReconnect() {\n if (this.delayedReconnectTimeout) {\n clearTimeout(this.delayedReconnectTimeout);\n }\n\n this.delayedReconnectTimeout = setTimeout(() => {\n this.delayedReconnectTimeout = null;\n this.reconnect();\n }, 10000);\n }\n\n onWebsocketMessage(event) {\n this.session.receive(JSON.parse(event.data));\n }\n\n addAvailableOccupant(occupantId) {\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n this.availableOccupants.push(occupantId);\n }\n }\n\n removeAvailableOccupant(occupantId) {\n const idx = this.availableOccupants.indexOf(occupantId);\n if (idx !== -1) {\n this.availableOccupants.splice(idx, 1);\n }\n }\n\n syncOccupants(requestedOccupants) {\n if (requestedOccupants) {\n this.requestedOccupants = requestedOccupants;\n }\n\n if (!this.requestedOccupants) {\n return;\n }\n\n // Add any requested, available, and non-pending occupants.\n for (let i = 0; i < this.requestedOccupants.length; i++) {\n const occupantId = this.requestedOccupants[i];\n if (!this.occupants[occupantId] && this.availableOccupants.indexOf(occupantId) !== -1 && !this.pendingOccupants.has(occupantId)) {\n this.addOccupant(occupantId);\n }\n }\n\n // Remove any unrequested and currently added occupants.\n for (let j = 0; j < this.availableOccupants.length; j++) {\n const occupantId = this.availableOccupants[j];\n if (this.occupants[occupantId] && this.requestedOccupants.indexOf(occupantId) === -1) {\n this.removeOccupant(occupantId);\n }\n }\n\n // Call the Networked AFrame callbacks for the updated occupants list.\n this.onOccupantsChanged(this.occupants);\n }\n\n async addOccupant(occupantId) {\n this.pendingOccupants.add(occupantId);\n \n const availableOccupantsCount = this.availableOccupants.length;\n if (availableOccupantsCount > AVAILABLE_OCCUPANTS_THRESHOLD) {\n await randomDelay(0, MAX_SUBSCRIBE_DELAY);\n }\n \n const subscriber = await this.createSubscriber(occupantId);\n if (subscriber) {\n if(!this.pendingOccupants.has(occupantId)) {\n subscriber.conn.close();\n } else {\n this.pendingOccupants.delete(occupantId);\n this.occupantIds.push(occupantId);\n this.occupants[occupantId] = subscriber;\n\n this.setMediaStream(occupantId, subscriber.mediaStream);\n\n // Call the Networked AFrame callbacks for the new occupant.\n this.onOccupantConnected(occupantId);\n }\n }\n }\n\n removeAllOccupants() {\n this.pendingOccupants.clear();\n for (let i = this.occupantIds.length - 1; i >= 0; i--) {\n this.removeOccupant(this.occupantIds[i]);\n }\n }\n\n removeOccupant(occupantId) {\n this.pendingOccupants.delete(occupantId);\n \n if (this.occupants[occupantId]) {\n // Close the subscriber peer connection. Which also detaches the plugin handle.\n this.occupants[occupantId].conn.close();\n delete this.occupants[occupantId];\n \n this.occupantIds.splice(this.occupantIds.indexOf(occupantId), 1);\n }\n\n if (this.mediaStreams[occupantId]) {\n delete this.mediaStreams[occupantId];\n }\n\n if (this.pendingMediaRequests.has(occupantId)) {\n const msg = \"The user disconnected before the media stream was resolved.\";\n this.pendingMediaRequests.get(occupantId).audio.reject(msg);\n this.pendingMediaRequests.get(occupantId).video.reject(msg);\n this.pendingMediaRequests.delete(occupantId);\n }\n\n // Call the Networked AFrame callbacks for the removed occupant.\n this.onOccupantDisconnected(occupantId);\n }\n\n associate(conn, handle) {\n conn.addEventListener(\"icecandidate\", ev => {\n handle.sendTrickle(ev.candidate || null).catch(e => error(\"Error trickling ICE: %o\", e));\n });\n conn.addEventListener(\"iceconnectionstatechange\", ev => {\n if (conn.iceConnectionState === \"connected\") {\n console.log(\"ICE state changed to connected\");\n }\n if (conn.iceConnectionState === \"disconnected\") {\n console.warn(\"ICE state changed to disconnected\");\n }\n if (conn.iceConnectionState === \"failed\") {\n console.warn(\"ICE failure detected. Reconnecting in 10s.\");\n this.performDelayedReconnect();\n }\n })\n\n // we have to debounce these because janus gets angry if you send it a new SDP before\n // it's finished processing an existing SDP. in actuality, it seems like this is maybe\n // too liberal and we need to wait some amount of time after an offer before sending another,\n // but we don't currently know any good way of detecting exactly how long :(\n conn.addEventListener(\n \"negotiationneeded\",\n debounce(ev => {\n debug(\"Sending new offer for handle: %o\", handle);\n var offer = conn.createOffer().then(this.configurePublisherSdp).then(this.fixSafariIceUFrag);\n var local = offer.then(o => conn.setLocalDescription(o));\n var remote = offer;\n\n remote = remote\n .then(this.fixSafariIceUFrag)\n .then(j => handle.sendJsep(j))\n .then(r => conn.setRemoteDescription(r.jsep));\n return Promise.all([local, remote]).catch(e => error(\"Error negotiating offer: %o\", e));\n })\n );\n handle.on(\n \"event\",\n debounce(ev => {\n var jsep = ev.jsep;\n if (jsep && jsep.type == \"offer\") {\n debug(\"Accepting new offer for handle: %o\", handle);\n var answer = conn\n .setRemoteDescription(this.configureSubscriberSdp(jsep))\n .then(_ => conn.createAnswer())\n .then(this.fixSafariIceUFrag);\n var local = answer.then(a => conn.setLocalDescription(a));\n var remote = answer.then(j => handle.sendJsep(j));\n return Promise.all([local, remote]).catch(e => error(\"Error negotiating answer: %o\", e));\n } else {\n // some other kind of event, nothing to do\n return null;\n }\n })\n );\n }\n\n async createPublisher() {\n var handle = new mj.JanusPluginHandle(this.session);\n var conn = new RTCPeerConnection(this.peerConnectionConfig || DEFAULT_PEER_CONNECTION_CONFIG);\n\n debug(\"pub waiting for sfu\");\n await handle.attach(\"janus.plugin.sfu\", this.loops && this.clientId ? parseInt(this.clientId) % this.loops : undefined);\n\n this.associate(conn, handle);\n\n debug(\"pub waiting for data channels & webrtcup\");\n var webrtcup = new Promise(resolve => handle.on(\"webrtcup\", resolve));\n\n // Unreliable datachannel: sending and receiving component updates.\n // Reliable datachannel: sending and recieving entity instantiations.\n var reliableChannel = conn.createDataChannel(\"reliable\", { ordered: true });\n var unreliableChannel = conn.createDataChannel(\"unreliable\", {\n ordered: false,\n maxRetransmits: 0\n });\n\n reliableChannel.addEventListener(\"message\", e => this.onDataChannelMessage(e, \"janus-reliable\"));\n unreliableChannel.addEventListener(\"message\", e => this.onDataChannelMessage(e, \"janus-unreliable\"));\n\n await webrtcup;\n await untilDataChannelOpen(reliableChannel);\n await untilDataChannelOpen(unreliableChannel);\n\n // doing this here is sort of a hack around chrome renegotiation weirdness --\n // if we do it prior to webrtcup, chrome on gear VR will sometimes put a\n // renegotiation offer in flight while the first offer was still being\n // processed by janus. we should find some more principled way to figure out\n // when janus is done in the future.\n if (this.localMediaStream) {\n this.localMediaStream.getTracks().forEach(track => {\n conn.addTrack(track, this.localMediaStream);\n });\n }\n\n // Handle all of the join and leave events.\n handle.on(\"event\", ev => {\n var data = ev.plugindata.data;\n if (data.event == \"join\" && data.room_id == this.room) {\n if (this.delayedReconnectTimeout) {\n // Don't create a new RTCPeerConnection, all RTCPeerConnection will be closed in less than 10s.\n return;\n }\n this.addAvailableOccupant(data.user_id);\n this.syncOccupants();\n } else if (data.event == \"leave\" && data.room_id == this.room) {\n this.removeAvailableOccupant(data.user_id);\n this.removeOccupant(data.user_id);\n } else if (data.event == \"blocked\") {\n document.body.dispatchEvent(new CustomEvent(\"blocked\", { detail: { clientId: data.by } }));\n } else if (data.event == \"unblocked\") {\n document.body.dispatchEvent(new CustomEvent(\"unblocked\", { detail: { clientId: data.by } }));\n } else if (data.event === \"data\") {\n this.onData(JSON.parse(data.body), \"janus-event\");\n }\n });\n\n debug(\"pub waiting for join\");\n\n // Send join message to janus. Listen for join/leave messages. Automatically subscribe to all users' WebRTC data.\n var message = await this.sendJoin(handle, {\n notifications: true,\n data: true\n });\n\n if (!message.plugindata.data.success) {\n const err = message.plugindata.data.error;\n console.error(err);\n // We may get here because of an expired JWT.\n // Close the connection ourself otherwise janus will close it after\n // session_timeout because we didn't send any keepalive and this will\n // trigger a delayed reconnect because of the iceconnectionstatechange\n // listener for failure state.\n // Even if the app code calls disconnect in case of error, disconnect\n // won't close the peer connection because this.publisher is not set.\n conn.close();\n throw err;\n }\n\n var initialOccupants = message.plugindata.data.response.users[this.room] || [];\n\n if (initialOccupants.includes(this.clientId)) {\n console.warn(\"Janus still has previous session for this client. Reconnecting in 10s.\");\n this.performDelayedReconnect();\n }\n\n debug(\"publisher ready\");\n return {\n handle,\n initialOccupants,\n reliableChannel,\n unreliableChannel,\n conn\n };\n }\n\n configurePublisherSdp(jsep) {\n jsep.sdp = jsep.sdp.replace(/a=fmtp:(109|111).*\\r\\n/g, (line, pt) => {\n const parameters = Object.assign(sdpUtils.parseFmtp(line), OPUS_PARAMETERS);\n return sdpUtils.writeFmtp({ payloadType: pt, parameters: parameters });\n });\n return jsep;\n }\n\n configureSubscriberSdp(jsep) {\n // todo: consider cleaning up these hacks to use sdputils\n if (!isH264VideoSupported) {\n if (navigator.userAgent.indexOf(\"HeadlessChrome\") !== -1) {\n // HeadlessChrome (e.g. puppeteer) doesn't support webrtc video streams, so we remove those lines from the SDP.\n jsep.sdp = jsep.sdp.replace(/m=video[^]*m=/, \"m=\");\n }\n }\n\n // TODO: Hack to get video working on Chrome for Android. https://groups.google.com/forum/#!topic/mozilla.dev.media/Ye29vuMTpo8\n if (navigator.userAgent.indexOf(\"Android\") === -1) {\n jsep.sdp = jsep.sdp.replace(\n \"a=rtcp-fb:107 goog-remb\\r\\n\",\n \"a=rtcp-fb:107 goog-remb\\r\\na=rtcp-fb:107 transport-cc\\r\\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\\r\\n\"\n );\n } else {\n jsep.sdp = jsep.sdp.replace(\n \"a=rtcp-fb:107 goog-remb\\r\\n\",\n \"a=rtcp-fb:107 goog-remb\\r\\na=rtcp-fb:107 transport-cc\\r\\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\\r\\n\"\n );\n }\n return jsep;\n }\n\n async fixSafariIceUFrag(jsep) {\n // Safari produces a \\n instead of an \\r\\n for the ice-ufrag. See https://github.com/meetecho/janus-gateway/issues/1818\n jsep.sdp = jsep.sdp.replace(/[^\\r]\\na=ice-ufrag/g, \"\\r\\na=ice-ufrag\");\n return jsep\n }\n\n async createSubscriber(occupantId, maxRetries = 5) {\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n console.warn(occupantId + \": cancelled occupant connection, occupant left before subscription negotation.\");\n return null;\n }\n\n var handle = new mj.JanusPluginHandle(this.session);\n var conn = new RTCPeerConnection(this.peerConnectionConfig || DEFAULT_PEER_CONNECTION_CONFIG);\n\n debug(occupantId + \": sub waiting for sfu\");\n await handle.attach(\"janus.plugin.sfu\", this.loops ? parseInt(occupantId) % this.loops : undefined);\n\n this.associate(conn, handle);\n\n debug(occupantId + \": sub waiting for join\");\n\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n conn.close();\n console.warn(occupantId + \": cancelled occupant connection, occupant left after attach\");\n return null;\n }\n\n let webrtcFailed = false;\n\n const webrtcup = new Promise(resolve => {\n const leftInterval = setInterval(() => {\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n clearInterval(leftInterval);\n resolve();\n }\n }, 1000);\n\n const timeout = setTimeout(() => {\n clearInterval(leftInterval);\n webrtcFailed = true;\n resolve();\n }, SUBSCRIBE_TIMEOUT_MS);\n\n handle.on(\"webrtcup\", () => {\n clearTimeout(timeout);\n clearInterval(leftInterval);\n resolve();\n });\n });\n\n // Send join message to janus. Don't listen for join/leave messages. Subscribe to the occupant's media.\n // Janus should send us an offer for this occupant's media in response to this.\n await this.sendJoin(handle, { media: occupantId });\n\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n conn.close();\n console.warn(occupantId + \": cancelled occupant connection, occupant left after join\");\n return null;\n }\n\n debug(occupantId + \": sub waiting for webrtcup\");\n await webrtcup;\n\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n conn.close();\n console.warn(occupantId + \": cancel occupant connection, occupant left during or after webrtcup\");\n return null;\n }\n\n if (webrtcFailed) {\n conn.close();\n if (maxRetries > 0) {\n console.warn(occupantId + \": webrtc up timed out, retrying\");\n return this.createSubscriber(occupantId, maxRetries - 1);\n } else {\n console.warn(occupantId + \": webrtc up timed out\");\n return null;\n }\n }\n\n if (isSafari && !this._iOSHackDelayedInitialPeer) {\n // HACK: the first peer on Safari during page load can fail to work if we don't\n // wait some time before continuing here. See: https://github.com/mozilla/hubs/pull/1692\n await (new Promise((resolve) => setTimeout(resolve, 3000)));\n this._iOSHackDelayedInitialPeer = true;\n }\n\n var mediaStream = new MediaStream();\n var receivers = conn.getReceivers();\n receivers.forEach(receiver => {\n if (receiver.track) {\n mediaStream.addTrack(receiver.track);\n }\n });\n if (mediaStream.getTracks().length === 0) {\n mediaStream = null;\n }\n\n debug(occupantId + \": subscriber ready\");\n return {\n handle,\n mediaStream,\n conn\n };\n }\n\n sendJoin(handle, subscribe) {\n return handle.sendMessage({\n kind: \"join\",\n room_id: this.room,\n user_id: this.clientId,\n subscribe,\n token: this.joinToken\n });\n }\n\n toggleFreeze() {\n if (this.frozen) {\n this.unfreeze();\n } else {\n this.freeze();\n }\n }\n\n freeze() {\n this.frozen = true;\n }\n\n unfreeze() {\n this.frozen = false;\n this.flushPendingUpdates();\n }\n\n dataForUpdateMultiMessage(networkId, message) {\n // \"d\" is an array of entity datas, where each item in the array represents a unique entity and contains\n // metadata for the entity, and an array of components that have been updated on the entity.\n // This method finds the data corresponding to the given networkId.\n for (let i = 0, l = message.data.d.length; i < l; i++) {\n const data = message.data.d[i];\n\n if (data.networkId === networkId) {\n return data;\n }\n }\n\n return null;\n }\n\n getPendingData(networkId, message) {\n if (!message) return null;\n\n let data = message.dataType === \"um\" ? this.dataForUpdateMultiMessage(networkId, message) : message.data;\n\n // Ignore messages relating to users who have disconnected since freezing, their entities\n // will have aleady been removed by NAF.\n // Note that delete messages have no \"owner\" so we have to check for that as well.\n if (data.owner && !this.occupants[data.owner]) return null;\n\n // Ignore messages from users that we may have blocked while frozen.\n if (data.owner && this.blockedClients.has(data.owner)) return null;\n\n return data\n }\n\n // Used externally\n getPendingDataForNetworkId(networkId) {\n return this.getPendingData(networkId, this.frozenUpdates.get(networkId));\n }\n\n flushPendingUpdates() {\n for (const [networkId, message] of this.frozenUpdates) {\n let data = this.getPendingData(networkId, message);\n if (!data) continue;\n\n // Override the data type on \"um\" messages types, since we extract entity updates from \"um\" messages into\n // individual frozenUpdates in storeSingleMessage.\n const dataType = message.dataType === \"um\" ? \"u\" : message.dataType;\n\n this.onOccupantMessage(null, dataType, data, message.source);\n }\n this.frozenUpdates.clear();\n }\n\n storeMessage(message) {\n if (message.dataType === \"um\") { // UpdateMulti\n for (let i = 0, l = message.data.d.length; i < l; i++) {\n this.storeSingleMessage(message, i);\n }\n } else {\n this.storeSingleMessage(message);\n }\n }\n\n storeSingleMessage(message, index) {\n const data = index !== undefined ? message.data.d[index] : message.data;\n const dataType = message.dataType;\n const source = message.source;\n\n const networkId = data.networkId;\n\n if (!this.frozenUpdates.has(networkId)) {\n this.frozenUpdates.set(networkId, message);\n } else {\n const storedMessage = this.frozenUpdates.get(networkId);\n const storedData = storedMessage.dataType === \"um\" ? this.dataForUpdateMultiMessage(networkId, storedMessage) : storedMessage.data;\n\n // Avoid updating components if the entity data received did not come from the current owner.\n const isOutdatedMessage = data.lastOwnerTime < storedData.lastOwnerTime;\n const isContemporaneousMessage = data.lastOwnerTime === storedData.lastOwnerTime;\n if (isOutdatedMessage || (isContemporaneousMessage && storedData.owner > data.owner)) {\n return;\n }\n\n if (dataType === \"r\") {\n const createdWhileFrozen = storedData && storedData.isFirstSync;\n if (createdWhileFrozen) {\n // If the entity was created and deleted while frozen, don't bother conveying anything to the consumer.\n this.frozenUpdates.delete(networkId);\n } else {\n // Delete messages override any other messages for this entity\n this.frozenUpdates.set(networkId, message);\n }\n } else {\n // merge in component updates\n if (storedData.components && data.components) {\n Object.assign(storedData.components, data.components);\n }\n }\n }\n }\n\n onDataChannelMessage(e, source) {\n this.onData(JSON.parse(e.data), source);\n }\n\n onData(message, source) {\n if (debug.enabled) {\n debug(`DC in: ${message}`);\n }\n\n if (!message.dataType) return;\n\n message.source = source;\n\n if (this.frozen) {\n this.storeMessage(message);\n } else {\n this.onOccupantMessage(null, message.dataType, message.data, message.source);\n }\n }\n\n shouldStartConnectionTo(client) {\n return true;\n }\n\n startStreamConnection(client) {}\n\n closeStreamConnection(client) {}\n\n getConnectStatus(clientId) {\n return this.occupants[clientId] ? NAF.adapters.IS_CONNECTED : NAF.adapters.NOT_CONNECTED;\n }\n\n async updateTimeOffset() {\n if (this.isDisconnected()) return;\n\n const clientSentTime = Date.now();\n\n const res = await fetch(document.location.href, {\n method: \"HEAD\",\n cache: \"no-cache\"\n });\n\n const precision = 1000;\n const serverReceivedTime = new Date(res.headers.get(\"Date\")).getTime() + precision / 2;\n const clientReceivedTime = Date.now();\n const serverTime = serverReceivedTime + (clientReceivedTime - clientSentTime) / 2;\n const timeOffset = serverTime - clientReceivedTime;\n\n this.serverTimeRequests++;\n\n if (this.serverTimeRequests <= 10) {\n this.timeOffsets.push(timeOffset);\n } else {\n this.timeOffsets[this.serverTimeRequests % 10] = timeOffset;\n }\n\n this.avgTimeOffset = this.timeOffsets.reduce((acc, offset) => (acc += offset), 0) / this.timeOffsets.length;\n\n if (this.serverTimeRequests > 10) {\n debug(`new server time offset: ${this.avgTimeOffset}ms`);\n setTimeout(() => this.updateTimeOffset(), 5 * 60 * 1000); // Sync clock every 5 minutes.\n } else {\n this.updateTimeOffset();\n }\n }\n\n getServerTime() {\n return Date.now() + this.avgTimeOffset;\n }\n\n getMediaStream(clientId, type = \"audio\") {\n if (this.mediaStreams[clientId]) {\n debug(`Already had ${type} for ${clientId}`);\n return Promise.resolve(this.mediaStreams[clientId][type]);\n } else {\n debug(`Waiting on ${type} for ${clientId}`);\n if (!this.pendingMediaRequests.has(clientId)) {\n this.pendingMediaRequests.set(clientId, {});\n\n const audioPromise = new Promise((resolve, reject) => {\n this.pendingMediaRequests.get(clientId).audio = { resolve, reject };\n });\n const videoPromise = new Promise((resolve, reject) => {\n this.pendingMediaRequests.get(clientId).video = { resolve, reject };\n });\n\n this.pendingMediaRequests.get(clientId).audio.promise = audioPromise;\n this.pendingMediaRequests.get(clientId).video.promise = videoPromise;\n\n audioPromise.catch(e => console.warn(`${clientId} getMediaStream Audio Error`, e));\n videoPromise.catch(e => console.warn(`${clientId} getMediaStream Video Error`, e));\n }\n return this.pendingMediaRequests.get(clientId)[type].promise;\n }\n }\n\n setMediaStream(clientId, stream) {\n // Safari doesn't like it when you use single a mixed media stream where one of the tracks is inactive, so we\n // split the tracks into two streams.\n const audioStream = new MediaStream();\n try {\n stream.getAudioTracks().forEach(track => audioStream.addTrack(track));\n\n } catch(e) {\n console.warn(`${clientId} setMediaStream Audio Error`, e);\n }\n const videoStream = new MediaStream();\n try {\n stream.getVideoTracks().forEach(track => videoStream.addTrack(track));\n\n } catch (e) {\n console.warn(`${clientId} setMediaStream Video Error`, e);\n }\n\n this.mediaStreams[clientId] = { audio: audioStream, video: videoStream };\n\n // Resolve the promise for the user's media stream if it exists.\n if (this.pendingMediaRequests.has(clientId)) {\n this.pendingMediaRequests.get(clientId).audio.resolve(audioStream);\n this.pendingMediaRequests.get(clientId).video.resolve(videoStream);\n }\n }\n\n getLocalMediaStream() {\n return this.localMediaStream;\n }\n\n async setLocalMediaStream(stream) {\n // our job here is to make sure the connection winds up with RTP senders sending the stuff in this stream,\n // and not the stuff that isn't in this stream. strategy is to replace existing tracks if we can, add tracks\n // that we can't replace, and disable tracks that don't exist anymore.\n\n // note that we don't ever remove a track from the stream -- since Janus doesn't support Unified Plan, we absolutely\n // can't wind up with a SDP that has >1 audio or >1 video tracks, even if one of them is inactive (what you get if\n // you remove a track from an existing stream.)\n if (this.publisher && this.publisher.conn) {\n const existingSenders = this.publisher.conn.getSenders();\n const newSenders = [];\n const tracks = stream.getTracks();\n\n for (let i = 0; i < tracks.length; i++) {\n const t = tracks[i];\n const sender = existingSenders.find(s => s.track != null && s.track.kind == t.kind);\n\n if (sender != null) {\n if (sender.replaceTrack) {\n await sender.replaceTrack(t);\n } else {\n // Fallback for browsers that don't support replaceTrack. At this time of this writing\n // most browsers support it, and testing this code path seems to not work properly\n // in Chrome anymore.\n stream.removeTrack(sender.track);\n stream.addTrack(t);\n }\n newSenders.push(sender);\n } else {\n newSenders.push(this.publisher.conn.addTrack(t, stream));\n }\n }\n existingSenders.forEach(s => {\n if (!newSenders.includes(s)) {\n s.track.enabled = false;\n }\n });\n }\n this.localMediaStream = stream;\n this.setMediaStream(this.clientId, stream);\n }\n\n enableMicrophone(enabled) {\n if (this.publisher && this.publisher.conn) {\n this.publisher.conn.getSenders().forEach(s => {\n if (s.track.kind == \"audio\") {\n s.track.enabled = enabled;\n }\n });\n }\n }\n\n sendData(clientId, dataType, data) {\n if (!this.publisher) {\n console.warn(\"sendData called without a publisher\");\n } else {\n switch (this.unreliableTransport) {\n case \"websocket\":\n if (this.ws.readyState === 1) { // OPEN\n this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }), whom: clientId });\n }\n break;\n case \"datachannel\":\n if (this.publisher.unreliableChannel.readyState === \"open\") {\n this.publisher.unreliableChannel.send(JSON.stringify({ clientId, dataType, data }));\n }\n break;\n default:\n this.unreliableTransport(clientId, dataType, data);\n break;\n }\n }\n }\n\n sendDataGuaranteed(clientId, dataType, data) {\n if (!this.publisher) {\n console.warn(\"sendDataGuaranteed called without a publisher\");\n } else {\n switch (this.reliableTransport) {\n case \"websocket\":\n if (this.ws.readyState === 1) { // OPEN\n this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }), whom: clientId });\n }\n break;\n case \"datachannel\":\n if (this.publisher.reliableChannel.readyState === \"open\") {\n this.publisher.reliableChannel.send(JSON.stringify({ clientId, dataType, data }));\n }\n break;\n default:\n this.reliableTransport(clientId, dataType, data);\n break;\n }\n }\n }\n\n broadcastData(dataType, data) {\n if (!this.publisher) {\n console.warn(\"broadcastData called without a publisher\");\n } else {\n switch (this.unreliableTransport) {\n case \"websocket\":\n if (this.ws.readyState === 1) { // OPEN\n this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }) });\n }\n break;\n case \"datachannel\":\n if (this.publisher.unreliableChannel.readyState === \"open\") {\n this.publisher.unreliableChannel.send(JSON.stringify({ dataType, data }));\n }\n break;\n default:\n this.unreliableTransport(undefined, dataType, data);\n break;\n }\n }\n }\n\n broadcastDataGuaranteed(dataType, data) {\n if (!this.publisher) {\n console.warn(\"broadcastDataGuaranteed called without a publisher\");\n } else {\n switch (this.reliableTransport) {\n case \"websocket\":\n if (this.ws.readyState === 1) { // OPEN\n this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }) });\n }\n break;\n case \"datachannel\":\n if (this.publisher.reliableChannel.readyState === \"open\") {\n this.publisher.reliableChannel.send(JSON.stringify({ dataType, data }));\n }\n break;\n default:\n this.reliableTransport(undefined, dataType, data);\n break;\n }\n }\n }\n\n kick(clientId, permsToken) {\n return this.publisher.handle.sendMessage({ kind: \"kick\", room_id: this.room, user_id: clientId, token: permsToken }).then(() => {\n document.body.dispatchEvent(new CustomEvent(\"kicked\", { detail: { clientId: clientId } }));\n });\n }\n\n block(clientId) {\n return this.publisher.handle.sendMessage({ kind: \"block\", whom: clientId }).then(() => {\n this.blockedClients.set(clientId, true);\n document.body.dispatchEvent(new CustomEvent(\"blocked\", { detail: { clientId: clientId } }));\n });\n }\n\n unblock(clientId) {\n return this.publisher.handle.sendMessage({ kind: \"unblock\", whom: clientId }).then(() => {\n this.blockedClients.delete(clientId);\n document.body.dispatchEvent(new CustomEvent(\"unblocked\", { detail: { clientId: clientId } }));\n });\n }\n}\n\nNAF.adapters.register(\"janus\", JanusAdapter);\n\nmodule.exports = JanusAdapter;\n","/* eslint-env browser */\n\n/**\n * This is the web browser implementation of `debug()`.\n */\n\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = localstorage();\nexports.destroy = (() => {\n\tlet warned = false;\n\n\treturn () => {\n\t\tif (!warned) {\n\t\t\twarned = true;\n\t\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t\t}\n\t};\n})();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n\t'#0000CC',\n\t'#0000FF',\n\t'#0033CC',\n\t'#0033FF',\n\t'#0066CC',\n\t'#0066FF',\n\t'#0099CC',\n\t'#0099FF',\n\t'#00CC00',\n\t'#00CC33',\n\t'#00CC66',\n\t'#00CC99',\n\t'#00CCCC',\n\t'#00CCFF',\n\t'#3300CC',\n\t'#3300FF',\n\t'#3333CC',\n\t'#3333FF',\n\t'#3366CC',\n\t'#3366FF',\n\t'#3399CC',\n\t'#3399FF',\n\t'#33CC00',\n\t'#33CC33',\n\t'#33CC66',\n\t'#33CC99',\n\t'#33CCCC',\n\t'#33CCFF',\n\t'#6600CC',\n\t'#6600FF',\n\t'#6633CC',\n\t'#6633FF',\n\t'#66CC00',\n\t'#66CC33',\n\t'#9900CC',\n\t'#9900FF',\n\t'#9933CC',\n\t'#9933FF',\n\t'#99CC00',\n\t'#99CC33',\n\t'#CC0000',\n\t'#CC0033',\n\t'#CC0066',\n\t'#CC0099',\n\t'#CC00CC',\n\t'#CC00FF',\n\t'#CC3300',\n\t'#CC3333',\n\t'#CC3366',\n\t'#CC3399',\n\t'#CC33CC',\n\t'#CC33FF',\n\t'#CC6600',\n\t'#CC6633',\n\t'#CC9900',\n\t'#CC9933',\n\t'#CCCC00',\n\t'#CCCC33',\n\t'#FF0000',\n\t'#FF0033',\n\t'#FF0066',\n\t'#FF0099',\n\t'#FF00CC',\n\t'#FF00FF',\n\t'#FF3300',\n\t'#FF3333',\n\t'#FF3366',\n\t'#FF3399',\n\t'#FF33CC',\n\t'#FF33FF',\n\t'#FF6600',\n\t'#FF6633',\n\t'#FF9900',\n\t'#FF9933',\n\t'#FFCC00',\n\t'#FFCC33'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\n// eslint-disable-next-line complexity\nfunction useColors() {\n\t// NB: In an Electron preload script, document will be defined but not fully\n\t// initialized. Since we know we're in Chrome, we'll just detect this case\n\t// explicitly\n\tif (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {\n\t\treturn true;\n\t}\n\n\t// Internet Explorer and Edge do not support colors.\n\tif (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\\/(\\d+)/)) {\n\t\treturn false;\n\t}\n\n\t// Is webkit? http://stackoverflow.com/a/16459606/376773\n\t// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632\n\treturn (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||\n\t\t// Is firebug? http://stackoverflow.com/a/398120/376773\n\t\t(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||\n\t\t// Is firefox >= v31?\n\t\t// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/) && parseInt(RegExp.$1, 10) >= 31) ||\n\t\t// Double check webkit in userAgent just in case we are in a worker\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\\/(\\d+)/));\n}\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs(args) {\n\targs[0] = (this.useColors ? '%c' : '') +\n\t\tthis.namespace +\n\t\t(this.useColors ? ' %c' : ' ') +\n\t\targs[0] +\n\t\t(this.useColors ? '%c ' : ' ') +\n\t\t'+' + module.exports.humanize(this.diff);\n\n\tif (!this.useColors) {\n\t\treturn;\n\t}\n\n\tconst c = 'color: ' + this.color;\n\targs.splice(1, 0, c, 'color: inherit');\n\n\t// The final \"%c\" is somewhat tricky, because there could be other\n\t// arguments passed either before or after the %c, so we need to\n\t// figure out the correct index to insert the CSS into\n\tlet index = 0;\n\tlet lastC = 0;\n\targs[0].replace(/%[a-zA-Z%]/g, match => {\n\t\tif (match === '%%') {\n\t\t\treturn;\n\t\t}\n\t\tindex++;\n\t\tif (match === '%c') {\n\t\t\t// We only are interested in the *last* %c\n\t\t\t// (the user may have provided their own)\n\t\t\tlastC = index;\n\t\t}\n\t});\n\n\targs.splice(lastC, 0, c);\n}\n\n/**\n * Invokes `console.debug()` when available.\n * No-op when `console.debug` is not a \"function\".\n * If `console.debug` is not available, falls back\n * to `console.log`.\n *\n * @api public\n */\nexports.log = console.debug || console.log || (() => {});\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\nfunction save(namespaces) {\n\ttry {\n\t\tif (namespaces) {\n\t\t\texports.storage.setItem('debug', namespaces);\n\t\t} else {\n\t\t\texports.storage.removeItem('debug');\n\t\t}\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\nfunction load() {\n\tlet r;\n\ttry {\n\t\tr = exports.storage.getItem('debug');\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n\n\t// If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n\tif (!r && typeof process !== 'undefined' && 'env' in process) {\n\t\tr = process.env.DEBUG;\n\t}\n\n\treturn r;\n}\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage() {\n\ttry {\n\t\t// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context\n\t\t// The Browser also has localStorage in the global context.\n\t\treturn localStorage;\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\nmodule.exports = require('./common')(exports);\n\nconst {formatters} = module.exports;\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nformatters.j = function (v) {\n\ttry {\n\t\treturn JSON.stringify(v);\n\t} catch (error) {\n\t\treturn '[UnexpectedJSONParseError]: ' + error.message;\n\t}\n};\n","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n */\n\nfunction setup(env) {\n\tcreateDebug.debug = createDebug;\n\tcreateDebug.default = createDebug;\n\tcreateDebug.coerce = coerce;\n\tcreateDebug.disable = disable;\n\tcreateDebug.enable = enable;\n\tcreateDebug.enabled = enabled;\n\tcreateDebug.humanize = require('ms');\n\tcreateDebug.destroy = destroy;\n\n\tObject.keys(env).forEach(key => {\n\t\tcreateDebug[key] = env[key];\n\t});\n\n\t/**\n\t* The currently active debug mode names, and names to skip.\n\t*/\n\n\tcreateDebug.names = [];\n\tcreateDebug.skips = [];\n\n\t/**\n\t* Map of special \"%n\" handling functions, for the debug \"format\" argument.\n\t*\n\t* Valid key names are a single, lower or upper-case letter, i.e. \"n\" and \"N\".\n\t*/\n\tcreateDebug.formatters = {};\n\n\t/**\n\t* Selects a color for a debug namespace\n\t* @param {String} namespace The namespace string for the debug instance to be colored\n\t* @return {Number|String} An ANSI color code for the given namespace\n\t* @api private\n\t*/\n\tfunction selectColor(namespace) {\n\t\tlet hash = 0;\n\n\t\tfor (let i = 0; i < namespace.length; i++) {\n\t\t\thash = ((hash << 5) - hash) + namespace.charCodeAt(i);\n\t\t\thash |= 0; // Convert to 32bit integer\n\t\t}\n\n\t\treturn createDebug.colors[Math.abs(hash) % createDebug.colors.length];\n\t}\n\tcreateDebug.selectColor = selectColor;\n\n\t/**\n\t* Create a debugger with the given `namespace`.\n\t*\n\t* @param {String} namespace\n\t* @return {Function}\n\t* @api public\n\t*/\n\tfunction createDebug(namespace) {\n\t\tlet prevTime;\n\t\tlet enableOverride = null;\n\t\tlet namespacesCache;\n\t\tlet enabledCache;\n\n\t\tfunction debug(...args) {\n\t\t\t// Disabled?\n\t\t\tif (!debug.enabled) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst self = debug;\n\n\t\t\t// Set `diff` timestamp\n\t\t\tconst curr = Number(new Date());\n\t\t\tconst ms = curr - (prevTime || curr);\n\t\t\tself.diff = ms;\n\t\t\tself.prev = prevTime;\n\t\t\tself.curr = curr;\n\t\t\tprevTime = curr;\n\n\t\t\targs[0] = createDebug.coerce(args[0]);\n\n\t\t\tif (typeof args[0] !== 'string') {\n\t\t\t\t// Anything else let's inspect with %O\n\t\t\t\targs.unshift('%O');\n\t\t\t}\n\n\t\t\t// Apply any `formatters` transformations\n\t\t\tlet index = 0;\n\t\t\targs[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {\n\t\t\t\t// If we encounter an escaped % then don't increase the array index\n\t\t\t\tif (match === '%%') {\n\t\t\t\t\treturn '%';\n\t\t\t\t}\n\t\t\t\tindex++;\n\t\t\t\tconst formatter = createDebug.formatters[format];\n\t\t\t\tif (typeof formatter === 'function') {\n\t\t\t\t\tconst val = args[index];\n\t\t\t\t\tmatch = formatter.call(self, val);\n\n\t\t\t\t\t// Now we need to remove `args[index]` since it's inlined in the `format`\n\t\t\t\t\targs.splice(index, 1);\n\t\t\t\t\tindex--;\n\t\t\t\t}\n\t\t\t\treturn match;\n\t\t\t});\n\n\t\t\t// Apply env-specific formatting (colors, etc.)\n\t\t\tcreateDebug.formatArgs.call(self, args);\n\n\t\t\tconst logFn = self.log || createDebug.log;\n\t\t\tlogFn.apply(self, args);\n\t\t}\n\n\t\tdebug.namespace = namespace;\n\t\tdebug.useColors = createDebug.useColors();\n\t\tdebug.color = createDebug.selectColor(namespace);\n\t\tdebug.extend = extend;\n\t\tdebug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.\n\n\t\tObject.defineProperty(debug, 'enabled', {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: false,\n\t\t\tget: () => {\n\t\t\t\tif (enableOverride !== null) {\n\t\t\t\t\treturn enableOverride;\n\t\t\t\t}\n\t\t\t\tif (namespacesCache !== createDebug.namespaces) {\n\t\t\t\t\tnamespacesCache = createDebug.namespaces;\n\t\t\t\t\tenabledCache = createDebug.enabled(namespace);\n\t\t\t\t}\n\n\t\t\t\treturn enabledCache;\n\t\t\t},\n\t\t\tset: v => {\n\t\t\t\tenableOverride = v;\n\t\t\t}\n\t\t});\n\n\t\t// Env-specific initialization logic for debug instances\n\t\tif (typeof createDebug.init === 'function') {\n\t\t\tcreateDebug.init(debug);\n\t\t}\n\n\t\treturn debug;\n\t}\n\n\tfunction extend(namespace, delimiter) {\n\t\tconst newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);\n\t\tnewDebug.log = this.log;\n\t\treturn newDebug;\n\t}\n\n\t/**\n\t* Enables a debug mode by namespaces. This can include modes\n\t* separated by a colon and wildcards.\n\t*\n\t* @param {String} namespaces\n\t* @api public\n\t*/\n\tfunction enable(namespaces) {\n\t\tcreateDebug.save(namespaces);\n\t\tcreateDebug.namespaces = namespaces;\n\n\t\tcreateDebug.names = [];\n\t\tcreateDebug.skips = [];\n\n\t\tlet i;\n\t\tconst split = (typeof namespaces === 'string' ? namespaces : '').split(/[\\s,]+/);\n\t\tconst len = split.length;\n\n\t\tfor (i = 0; i < len; i++) {\n\t\t\tif (!split[i]) {\n\t\t\t\t// ignore empty strings\n\t\t\t\tcontinue;\n\t\t\t}\n\n\t\t\tnamespaces = split[i].replace(/\\*/g, '.*?');\n\n\t\t\tif (namespaces[0] === '-') {\n\t\t\t\tcreateDebug.skips.push(new RegExp('^' + namespaces.slice(1) + '$'));\n\t\t\t} else {\n\t\t\t\tcreateDebug.names.push(new RegExp('^' + namespaces + '$'));\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t* Disable debug output.\n\t*\n\t* @return {String} namespaces\n\t* @api public\n\t*/\n\tfunction disable() {\n\t\tconst namespaces = [\n\t\t\t...createDebug.names.map(toNamespace),\n\t\t\t...createDebug.skips.map(toNamespace).map(namespace => '-' + namespace)\n\t\t].join(',');\n\t\tcreateDebug.enable('');\n\t\treturn namespaces;\n\t}\n\n\t/**\n\t* Returns true if the given mode name is enabled, false otherwise.\n\t*\n\t* @param {String} name\n\t* @return {Boolean}\n\t* @api public\n\t*/\n\tfunction enabled(name) {\n\t\tif (name[name.length - 1] === '*') {\n\t\t\treturn true;\n\t\t}\n\n\t\tlet i;\n\t\tlet len;\n\n\t\tfor (i = 0, len = createDebug.skips.length; i < len; i++) {\n\t\t\tif (createDebug.skips[i].test(name)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\tfor (i = 0, len = createDebug.names.length; i < len; i++) {\n\t\t\tif (createDebug.names[i].test(name)) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t* Convert regexp to namespace\n\t*\n\t* @param {RegExp} regxep\n\t* @return {String} namespace\n\t* @api private\n\t*/\n\tfunction toNamespace(regexp) {\n\t\treturn regexp.toString()\n\t\t\t.substring(2, regexp.toString().length - 2)\n\t\t\t.replace(/\\.\\*\\?$/, '*');\n\t}\n\n\t/**\n\t* Coerce `val`.\n\t*\n\t* @param {Mixed} val\n\t* @return {Mixed}\n\t* @api private\n\t*/\n\tfunction coerce(val) {\n\t\tif (val instanceof Error) {\n\t\t\treturn val.stack || val.message;\n\t\t}\n\t\treturn val;\n\t}\n\n\t/**\n\t* XXX DO NOT USE. This is a temporary stub function.\n\t* XXX It WILL be removed in the next major release.\n\t*/\n\tfunction destroy() {\n\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t}\n\n\tcreateDebug.enable(createDebug.load());\n\n\treturn createDebug;\n}\n\nmodule.exports = setup;\n","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar w = d * 7;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n * - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} [options]\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function(val, options) {\n options = options || {};\n var type = typeof val;\n if (type === 'string' && val.length > 0) {\n return parse(val);\n } else if (type === 'number' && isFinite(val)) {\n return options.long ? fmtLong(val) : fmtShort(val);\n }\n throw new Error(\n 'val is not a non-empty string or a valid number. val=' +\n JSON.stringify(val)\n );\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n str = String(str);\n if (str.length > 100) {\n return;\n }\n var match = /^(-?(?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(\n str\n );\n if (!match) {\n return;\n }\n var n = parseFloat(match[1]);\n var type = (match[2] || 'ms').toLowerCase();\n switch (type) {\n case 'years':\n case 'year':\n case 'yrs':\n case 'yr':\n case 'y':\n return n * y;\n case 'weeks':\n case 'week':\n case 'w':\n return n * w;\n case 'days':\n case 'day':\n case 'd':\n return n * d;\n case 'hours':\n case 'hour':\n case 'hrs':\n case 'hr':\n case 'h':\n return n * h;\n case 'minutes':\n case 'minute':\n case 'mins':\n case 'min':\n case 'm':\n return n * m;\n case 'seconds':\n case 'second':\n case 'secs':\n case 'sec':\n case 's':\n return n * s;\n case 'milliseconds':\n case 'millisecond':\n case 'msecs':\n case 'msec':\n case 'ms':\n return n;\n default:\n return undefined;\n }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n var msAbs = Math.abs(ms);\n if (msAbs >= d) {\n return Math.round(ms / d) + 'd';\n }\n if (msAbs >= h) {\n return Math.round(ms / h) + 'h';\n }\n if (msAbs >= m) {\n return Math.round(ms / m) + 'm';\n }\n if (msAbs >= s) {\n return Math.round(ms / s) + 's';\n }\n return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n var msAbs = Math.abs(ms);\n if (msAbs >= d) {\n return plural(ms, msAbs, d, 'day');\n }\n if (msAbs >= h) {\n return plural(ms, msAbs, h, 'hour');\n }\n if (msAbs >= m) {\n return plural(ms, msAbs, m, 'minute');\n }\n if (msAbs >= s) {\n return plural(ms, msAbs, s, 'second');\n }\n return ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, msAbs, n, name) {\n var isPlural = msAbs >= n * 1.5;\n return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');\n}\n","/* eslint-env node */\n'use strict';\n\n// SDP helpers.\nconst SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n return Math.random().toString(36).substring(2, 12);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n return blob.trim().split('\\n').map(line => line.trim());\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n const parts = blob.split('\\nm=');\n return parts.map((part, index) => (index > 0 ?\n 'm=' + part : part).trim() + '\\r\\n');\n};\n\n// Returns the session description.\nSDPUtils.getDescription = function(blob) {\n const sections = SDPUtils.splitSections(blob);\n return sections && sections[0];\n};\n\n// Returns the individual media sections.\nSDPUtils.getMediaSections = function(blob) {\n const sections = SDPUtils.splitSections(blob);\n sections.shift();\n return sections;\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n return SDPUtils.splitLines(blob).filter(line => line.indexOf(prefix) === 0);\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\n// Input can be prefixed with a=.\nSDPUtils.parseCandidate = function(line) {\n let parts;\n // Parse both variants.\n if (line.indexOf('a=candidate:') === 0) {\n parts = line.substring(12).split(' ');\n } else {\n parts = line.substring(10).split(' ');\n }\n\n const candidate = {\n foundation: parts[0],\n component: {1: 'rtp', 2: 'rtcp'}[parts[1]] || parts[1],\n protocol: parts[2].toLowerCase(),\n priority: parseInt(parts[3], 10),\n ip: parts[4],\n address: parts[4], // address is an alias for ip.\n port: parseInt(parts[5], 10),\n // skip parts[6] == 'typ'\n type: parts[7],\n };\n\n for (let i = 8; i < parts.length; i += 2) {\n switch (parts[i]) {\n case 'raddr':\n candidate.relatedAddress = parts[i + 1];\n break;\n case 'rport':\n candidate.relatedPort = parseInt(parts[i + 1], 10);\n break;\n case 'tcptype':\n candidate.tcpType = parts[i + 1];\n break;\n case 'ufrag':\n candidate.ufrag = parts[i + 1]; // for backward compatibility.\n candidate.usernameFragment = parts[i + 1];\n break;\n default: // extension handling, in particular ufrag. Don't overwrite.\n if (candidate[parts[i]] === undefined) {\n candidate[parts[i]] = parts[i + 1];\n }\n break;\n }\n }\n return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\n// This does not include the a= prefix!\nSDPUtils.writeCandidate = function(candidate) {\n const sdp = [];\n sdp.push(candidate.foundation);\n\n const component = candidate.component;\n if (component === 'rtp') {\n sdp.push(1);\n } else if (component === 'rtcp') {\n sdp.push(2);\n } else {\n sdp.push(component);\n }\n sdp.push(candidate.protocol.toUpperCase());\n sdp.push(candidate.priority);\n sdp.push(candidate.address || candidate.ip);\n sdp.push(candidate.port);\n\n const type = candidate.type;\n sdp.push('typ');\n sdp.push(type);\n if (type !== 'host' && candidate.relatedAddress &&\n candidate.relatedPort) {\n sdp.push('raddr');\n sdp.push(candidate.relatedAddress);\n sdp.push('rport');\n sdp.push(candidate.relatedPort);\n }\n if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n sdp.push('tcptype');\n sdp.push(candidate.tcpType);\n }\n if (candidate.usernameFragment || candidate.ufrag) {\n sdp.push('ufrag');\n sdp.push(candidate.usernameFragment || candidate.ufrag);\n }\n return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an ice-options line, returns an array of option tags.\n// Sample input:\n// a=ice-options:foo bar\nSDPUtils.parseIceOptions = function(line) {\n return line.substring(14).split(' ');\n};\n\n// Parses a rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n let parts = line.substring(9).split(' ');\n const parsed = {\n payloadType: parseInt(parts.shift(), 10), // was: id\n };\n\n parts = parts[0].split('/');\n\n parsed.name = parts[0];\n parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n // legacy alias, got renamed back to channels in ORTC.\n parsed.numChannels = parsed.channels;\n return parsed;\n};\n\n// Generates a rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n let pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n const channels = codec.channels || codec.numChannels || 1;\n return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n (channels !== 1 ? '/' + channels : '') + '\\r\\n';\n};\n\n// Parses a extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n const parts = line.substring(9).split(' ');\n return {\n id: parseInt(parts[0], 10),\n direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',\n uri: parts[1],\n attributes: parts.slice(2).join(' '),\n };\n};\n\n// Generates an extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n (headerExtension.direction && headerExtension.direction !== 'sendrecv'\n ? '/' + headerExtension.direction\n : '') +\n ' ' + headerExtension.uri +\n (headerExtension.attributes ? ' ' + headerExtension.attributes : '') +\n '\\r\\n';\n};\n\n// Parses a fmtp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n const parsed = {};\n let kv;\n const parts = line.substring(line.indexOf(' ') + 1).split(';');\n for (let j = 0; j < parts.length; j++) {\n kv = parts[j].trim().split('=');\n parsed[kv[0].trim()] = kv[1];\n }\n return parsed;\n};\n\n// Generates a fmtp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n let line = '';\n let pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.parameters && Object.keys(codec.parameters).length) {\n const params = [];\n Object.keys(codec.parameters).forEach(param => {\n if (codec.parameters[param] !== undefined) {\n params.push(param + '=' + codec.parameters[param]);\n } else {\n params.push(param);\n }\n });\n line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n }\n return line;\n};\n\n// Parses a rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n const parts = line.substring(line.indexOf(' ') + 1).split(' ');\n return {\n type: parts.shift(),\n parameter: parts.join(' '),\n };\n};\n\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n let lines = '';\n let pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n // FIXME: special handling for trr-int?\n codec.rtcpFeedback.forEach(fb => {\n lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n '\\r\\n';\n });\n }\n return lines;\n};\n\n// Parses a RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n const sp = line.indexOf(' ');\n const parts = {\n ssrc: parseInt(line.substring(7, sp), 10),\n };\n const colon = line.indexOf(':', sp);\n if (colon > -1) {\n parts.attribute = line.substring(sp + 1, colon);\n parts.value = line.substring(colon + 1);\n } else {\n parts.attribute = line.substring(sp + 1);\n }\n return parts;\n};\n\n// Parse a ssrc-group line (see RFC 5576). Sample input:\n// a=ssrc-group:semantics 12 34\nSDPUtils.parseSsrcGroup = function(line) {\n const parts = line.substring(13).split(' ');\n return {\n semantics: parts.shift(),\n ssrcs: parts.map(ssrc => parseInt(ssrc, 10)),\n };\n};\n\n// Extracts the MID (RFC 5888) from a media section.\n// Returns the MID or undefined if no mid line was found.\nSDPUtils.getMid = function(mediaSection) {\n const mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];\n if (mid) {\n return mid.substring(6);\n }\n};\n\n// Parses a fingerprint line for DTLS-SRTP.\nSDPUtils.parseFingerprint = function(line) {\n const parts = line.substring(14).split(' ');\n return {\n algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.\n value: parts[1].toUpperCase(), // the definition is upper-case in RFC 4572.\n };\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n const lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=fingerprint:');\n // Note: a=setup line is ignored since we use the 'auto' role in Edge.\n return {\n role: 'auto',\n fingerprints: lines.map(SDPUtils.parseFingerprint),\n };\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n let sdp = 'a=setup:' + setupType + '\\r\\n';\n params.fingerprints.forEach(fp => {\n sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n });\n return sdp;\n};\n\n// Parses a=crypto lines into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members\nSDPUtils.parseCryptoLine = function(line) {\n const parts = line.substring(9).split(' ');\n return {\n tag: parseInt(parts[0], 10),\n cryptoSuite: parts[1],\n keyParams: parts[2],\n sessionParams: parts.slice(3),\n };\n};\n\nSDPUtils.writeCryptoLine = function(parameters) {\n return 'a=crypto:' + parameters.tag + ' ' +\n parameters.cryptoSuite + ' ' +\n (typeof parameters.keyParams === 'object'\n ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)\n : parameters.keyParams) +\n (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +\n '\\r\\n';\n};\n\n// Parses the crypto key parameters into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*\nSDPUtils.parseCryptoKeyParams = function(keyParams) {\n if (keyParams.indexOf('inline:') !== 0) {\n return null;\n }\n const parts = keyParams.substring(7).split('|');\n return {\n keyMethod: 'inline',\n keySalt: parts[0],\n lifeTime: parts[1],\n mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,\n mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,\n };\n};\n\nSDPUtils.writeCryptoKeyParams = function(keyParams) {\n return keyParams.keyMethod + ':'\n + keyParams.keySalt +\n (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +\n (keyParams.mkiValue && keyParams.mkiLength\n ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength\n : '');\n};\n\n// Extracts all SDES parameters.\nSDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {\n const lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=crypto:');\n return lines.map(SDPUtils.parseCryptoLine);\n};\n\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n const ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-ufrag:')[0];\n const pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-pwd:')[0];\n if (!(ufrag && pwd)) {\n return null;\n }\n return {\n usernameFragment: ufrag.substring(12),\n password: pwd.substring(10),\n };\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n let sdp = 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n 'a=ice-pwd:' + params.password + '\\r\\n';\n if (params.iceLite) {\n sdp += 'a=ice-lite\\r\\n';\n }\n return sdp;\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n const description = {\n codecs: [],\n headerExtensions: [],\n fecMechanisms: [],\n rtcp: [],\n };\n const lines = SDPUtils.splitLines(mediaSection);\n const mline = lines[0].split(' ');\n description.profile = mline[2];\n for (let i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n const pt = mline[i];\n const rtpmapline = SDPUtils.matchPrefix(\n mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n if (rtpmapline) {\n const codec = SDPUtils.parseRtpMap(rtpmapline);\n const fmtps = SDPUtils.matchPrefix(\n mediaSection, 'a=fmtp:' + pt + ' ');\n // Only the first a=fmtp: is considered.\n codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n codec.rtcpFeedback = SDPUtils.matchPrefix(\n mediaSection, 'a=rtcp-fb:' + pt + ' ')\n .map(SDPUtils.parseRtcpFb);\n description.codecs.push(codec);\n // parse FEC mechanisms from rtpmap lines.\n switch (codec.name.toUpperCase()) {\n case 'RED':\n case 'ULPFEC':\n description.fecMechanisms.push(codec.name.toUpperCase());\n break;\n default: // only RED and ULPFEC are recognized as FEC mechanisms.\n break;\n }\n }\n }\n SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(line => {\n description.headerExtensions.push(SDPUtils.parseExtmap(line));\n });\n const wildcardRtcpFb = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-fb:* ')\n .map(SDPUtils.parseRtcpFb);\n description.codecs.forEach(codec => {\n wildcardRtcpFb.forEach(fb=> {\n const duplicate = codec.rtcpFeedback.find(existingFeedback => {\n return existingFeedback.type === fb.type &&\n existingFeedback.parameter === fb.parameter;\n });\n if (!duplicate) {\n codec.rtcpFeedback.push(fb);\n }\n });\n });\n // FIXME: parse rtcp.\n return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n let sdp = '';\n\n // Build the mline.\n sdp += 'm=' + kind + ' ';\n sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n sdp += ' ' + (caps.profile || 'UDP/TLS/RTP/SAVPF') + ' ';\n sdp += caps.codecs.map(codec => {\n if (codec.preferredPayloadType !== undefined) {\n return codec.preferredPayloadType;\n }\n return codec.payloadType;\n }).join(' ') + '\\r\\n';\n\n sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n caps.codecs.forEach(codec => {\n sdp += SDPUtils.writeRtpMap(codec);\n sdp += SDPUtils.writeFmtp(codec);\n sdp += SDPUtils.writeRtcpFb(codec);\n });\n let maxptime = 0;\n caps.codecs.forEach(codec => {\n if (codec.maxptime > maxptime) {\n maxptime = codec.maxptime;\n }\n });\n if (maxptime > 0) {\n sdp += 'a=maxptime:' + maxptime + '\\r\\n';\n }\n\n if (caps.headerExtensions) {\n caps.headerExtensions.forEach(extension => {\n sdp += SDPUtils.writeExtmap(extension);\n });\n }\n // FIXME: write fecMechanisms.\n return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n const encodingParameters = [];\n const description = SDPUtils.parseRtpParameters(mediaSection);\n const hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n const hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n // filter a=ssrc:... cname:, ignore PlanB-msid\n const ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(line => SDPUtils.parseSsrcMedia(line))\n .filter(parts => parts.attribute === 'cname');\n const primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n let secondarySsrc;\n\n const flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n .map(line => {\n const parts = line.substring(17).split(' ');\n return parts.map(part => parseInt(part, 10));\n });\n if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n secondarySsrc = flows[0][1];\n }\n\n description.codecs.forEach(codec => {\n if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n let encParam = {\n ssrc: primarySsrc,\n codecPayloadType: parseInt(codec.parameters.apt, 10),\n };\n if (primarySsrc && secondarySsrc) {\n encParam.rtx = {ssrc: secondarySsrc};\n }\n encodingParameters.push(encParam);\n if (hasRed) {\n encParam = JSON.parse(JSON.stringify(encParam));\n encParam.fec = {\n ssrc: primarySsrc,\n mechanism: hasUlpfec ? 'red+ulpfec' : 'red',\n };\n encodingParameters.push(encParam);\n }\n }\n });\n if (encodingParameters.length === 0 && primarySsrc) {\n encodingParameters.push({\n ssrc: primarySsrc,\n });\n }\n\n // we support both b=AS and b=TIAS but interpret AS as TIAS.\n let bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n if (bandwidth.length) {\n if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n bandwidth = parseInt(bandwidth[0].substring(7), 10);\n } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n // use formula from JSEP to convert b=AS to TIAS value.\n bandwidth = parseInt(bandwidth[0].substring(5), 10) * 1000 * 0.95\n - (50 * 40 * 8);\n } else {\n bandwidth = undefined;\n }\n encodingParameters.forEach(params => {\n params.maxBitrate = bandwidth;\n });\n }\n return encodingParameters;\n};\n\n// parses http://draft.ortc.org/#rtcrtcpparameters*\nSDPUtils.parseRtcpParameters = function(mediaSection) {\n const rtcpParameters = {};\n\n // Gets the first SSRC. Note that with RTX there might be multiple\n // SSRCs.\n const remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(line => SDPUtils.parseSsrcMedia(line))\n .filter(obj => obj.attribute === 'cname')[0];\n if (remoteSsrc) {\n rtcpParameters.cname = remoteSsrc.value;\n rtcpParameters.ssrc = remoteSsrc.ssrc;\n }\n\n // Edge uses the compound attribute instead of reducedSize\n // compound is !reducedSize\n const rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');\n rtcpParameters.reducedSize = rsize.length > 0;\n rtcpParameters.compound = rsize.length === 0;\n\n // parses the rtcp-mux attrŅ–bute.\n // Note that Edge does not support unmuxed RTCP.\n const mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');\n rtcpParameters.mux = mux.length > 0;\n\n return rtcpParameters;\n};\n\nSDPUtils.writeRtcpParameters = function(rtcpParameters) {\n let sdp = '';\n if (rtcpParameters.reducedSize) {\n sdp += 'a=rtcp-rsize\\r\\n';\n }\n if (rtcpParameters.mux) {\n sdp += 'a=rtcp-mux\\r\\n';\n }\n if (rtcpParameters.ssrc !== undefined && rtcpParameters.cname) {\n sdp += 'a=ssrc:' + rtcpParameters.ssrc +\n ' cname:' + rtcpParameters.cname + '\\r\\n';\n }\n return sdp;\n};\n\n\n// parses either a=msid: or a=ssrc:... msid lines and returns\n// the id of the MediaStream and MediaStreamTrack.\nSDPUtils.parseMsid = function(mediaSection) {\n let parts;\n const spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');\n if (spec.length === 1) {\n parts = spec[0].substring(7).split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n const planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(line => SDPUtils.parseSsrcMedia(line))\n .filter(msidParts => msidParts.attribute === 'msid');\n if (planB.length > 0) {\n parts = planB[0].value.split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n};\n\n// SCTP\n// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back\n// to draft-ietf-mmusic-sctp-sdp-05\nSDPUtils.parseSctpDescription = function(mediaSection) {\n const mline = SDPUtils.parseMLine(mediaSection);\n const maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');\n let maxMessageSize;\n if (maxSizeLine.length > 0) {\n maxMessageSize = parseInt(maxSizeLine[0].substring(19), 10);\n }\n if (isNaN(maxMessageSize)) {\n maxMessageSize = 65536;\n }\n const sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');\n if (sctpPort.length > 0) {\n return {\n port: parseInt(sctpPort[0].substring(12), 10),\n protocol: mline.fmt,\n maxMessageSize,\n };\n }\n const sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');\n if (sctpMapLines.length > 0) {\n const parts = sctpMapLines[0]\n .substring(10)\n .split(' ');\n return {\n port: parseInt(parts[0], 10),\n protocol: parts[1],\n maxMessageSize,\n };\n }\n};\n\n// SCTP\n// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers\n// support by now receiving in this format, unless we originally parsed\n// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line\n// protocol of DTLS/SCTP -- without UDP/ or TCP/)\nSDPUtils.writeSctpDescription = function(media, sctp) {\n let output = [];\n if (media.protocol !== 'DTLS/SCTP') {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctp-port:' + sctp.port + '\\r\\n',\n ];\n } else {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\\r\\n',\n ];\n }\n if (sctp.maxMessageSize !== undefined) {\n output.push('a=max-message-size:' + sctp.maxMessageSize + '\\r\\n');\n }\n return output.join('');\n};\n\n// Generate a session ID for SDP.\n// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1\n// recommends using a cryptographically random +ve 64-bit value\n// but right now this should be acceptable and within the right range\nSDPUtils.generateSessionId = function() {\n return Math.random().toString().substr(2, 22);\n};\n\n// Write boiler plate for start of SDP\n// sessId argument is optional - if not supplied it will\n// be generated randomly\n// sessVersion is optional and defaults to 2\n// sessUser is optional and defaults to 'thisisadapterortc'\nSDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {\n let sessionId;\n const version = sessVer !== undefined ? sessVer : 2;\n if (sessId) {\n sessionId = sessId;\n } else {\n sessionId = SDPUtils.generateSessionId();\n }\n const user = sessUser || 'thisisadapterortc';\n // FIXME: sess-id should be an NTP timestamp.\n return 'v=0\\r\\n' +\n 'o=' + user + ' ' + sessionId + ' ' + version +\n ' IN IP4 127.0.0.1\\r\\n' +\n 's=-\\r\\n' +\n 't=0 0\\r\\n';\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n const lines = SDPUtils.splitLines(mediaSection);\n for (let i = 0; i < lines.length; i++) {\n switch (lines[i]) {\n case 'a=sendrecv':\n case 'a=sendonly':\n case 'a=recvonly':\n case 'a=inactive':\n return lines[i].substring(2);\n default:\n // FIXME: What should happen here?\n }\n }\n if (sessionpart) {\n return SDPUtils.getDirection(sessionpart);\n }\n return 'sendrecv';\n};\n\nSDPUtils.getKind = function(mediaSection) {\n const lines = SDPUtils.splitLines(mediaSection);\n const mline = lines[0].split(' ');\n return mline[0].substring(2);\n};\n\nSDPUtils.isRejected = function(mediaSection) {\n return mediaSection.split(' ', 2)[1] === '0';\n};\n\nSDPUtils.parseMLine = function(mediaSection) {\n const lines = SDPUtils.splitLines(mediaSection);\n const parts = lines[0].substring(2).split(' ');\n return {\n kind: parts[0],\n port: parseInt(parts[1], 10),\n protocol: parts[2],\n fmt: parts.slice(3).join(' '),\n };\n};\n\nSDPUtils.parseOLine = function(mediaSection) 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Each WebRTC connection to the Janus server will be\n * associated with a single handle. Once attached to the server, this handle will be given a unique ID which should be\n * used to associate it with future signalling messages.\n *\n * See https://janus.conf.meetecho.com/docs/rest.html#handles.\n **/\nfunction JanusPluginHandle(session) {\n this.session = session;\n this.id = undefined;\n}\n\n/** Attaches this handle to the Janus server and sets its ID. **/\nJanusPluginHandle.prototype.attach = function(plugin, loop_index) {\n var payload = { plugin: plugin, loop_index: loop_index, \"force-bundle\": true, \"force-rtcp-mux\": true };\n return this.session.send(\"attach\", payload).then(resp => {\n this.id = resp.data.id;\n return resp;\n });\n};\n\n/** Detaches this handle. **/\nJanusPluginHandle.prototype.detach = function() {\n return this.send(\"detach\");\n};\n\n/** Registers a callback to be fired upon the reception of any incoming Janus signals for this plugin handle with the\n * `janus` attribute equal to `ev`.\n **/\nJanusPluginHandle.prototype.on = function(ev, callback) {\n return this.session.on(ev, signal => {\n if (signal.sender == this.id) {\n callback(signal);\n }\n });\n};\n\n/**\n * Sends a signal associated with this handle. Signals should be JSON-serializable objects. Returns a promise that will\n * be resolved or rejected when a response to this signal is received, or when no response is received within the\n * session timeout.\n **/\nJanusPluginHandle.prototype.send = function(type, signal) {\n return this.session.send(type, Object.assign({ handle_id: this.id }, signal));\n};\n\n/** Sends a plugin-specific message associated with this handle. **/\nJanusPluginHandle.prototype.sendMessage = function(body) {\n return this.send(\"message\", { body: body });\n};\n\n/** Sends a JSEP offer or answer associated with this handle. **/\nJanusPluginHandle.prototype.sendJsep = function(jsep) {\n return this.send(\"message\", { body: {}, jsep: jsep });\n};\n\n/** Sends an ICE trickle candidate associated with this handle. **/\nJanusPluginHandle.prototype.sendTrickle = function(candidate) {\n return this.send(\"trickle\", { candidate: candidate });\n};\n\n/**\n * Represents a Janus session -- a Janus context from within which you can open multiple handles and connections. Once\n * created, this session will be given a unique ID which should be used to associate it with future signalling messages.\n *\n * See https://janus.conf.meetecho.com/docs/rest.html#sessions.\n **/\nfunction JanusSession(output, options) {\n this.output = output;\n this.id = undefined;\n this.nextTxId = 0;\n this.txns = {};\n this.eventHandlers = {};\n this.options = Object.assign({\n verbose: false,\n timeoutMs: 10000,\n keepaliveMs: 30000\n }, options);\n}\n\n/** Creates this session on the Janus server and sets its ID. **/\nJanusSession.prototype.create = function() {\n return this.send(\"create\").then(resp => {\n this.id = resp.data.id;\n return resp;\n });\n};\n\n/**\n * Destroys this session. Note that upon destruction, Janus will also close the signalling transport (if applicable) and\n * any open WebRTC connections.\n **/\nJanusSession.prototype.destroy = function() {\n return this.send(\"destroy\").then((resp) => {\n this.dispose();\n return resp;\n });\n};\n\n/**\n * Disposes of this session in a way such that no further incoming signalling messages will be processed.\n * Outstanding transactions will be rejected.\n **/\nJanusSession.prototype.dispose = function() {\n this._killKeepalive();\n this.eventHandlers = {};\n for (var txId in this.txns) {\n if (this.txns.hasOwnProperty(txId)) {\n var txn = this.txns[txId];\n clearTimeout(txn.timeout);\n txn.reject(new Error(\"Janus session was disposed.\"));\n delete this.txns[txId];\n }\n }\n};\n\n/**\n * Whether this signal represents an error, and the associated promise (if any) should be rejected.\n * Users should override this to handle any custom plugin-specific error conventions.\n **/\nJanusSession.prototype.isError = function(signal) {\n return signal.janus === \"error\";\n};\n\n/** Registers a callback to be fired upon the reception of any incoming Janus signals for this session with the\n * `janus` attribute equal to `ev`.\n **/\nJanusSession.prototype.on = function(ev, callback) {\n var handlers = this.eventHandlers[ev];\n if (handlers == null) {\n handlers = this.eventHandlers[ev] = [];\n }\n handlers.push(callback);\n};\n\n/**\n * Callback for receiving JSON signalling messages pertinent to this session. If the signals are responses to previously\n * sent signals, the promises for the outgoing signals will be resolved or rejected appropriately with this signal as an\n * argument.\n *\n * External callers should call this function every time a new signal arrives on the transport; for example, in a\n * WebSocket's `message` event, or when a new datum shows up in an HTTP long-polling response.\n **/\nJanusSession.prototype.receive = function(signal) {\n if (this.options.verbose) {\n this._logIncoming(signal);\n }\n if (signal.session_id != this.id) {\n console.warn(\"Incorrect session ID received in Janus signalling message: was \" + signal.session_id + \", expected \" + this.id + \".\");\n }\n\n var responseType = signal.janus;\n var handlers = this.eventHandlers[responseType];\n if (handlers != null) {\n for (var i = 0; i < handlers.length; i++) {\n handlers[i](signal);\n }\n }\n\n if (signal.transaction != null) {\n var txn = this.txns[signal.transaction];\n if (txn == null) {\n // this is a response to a transaction that wasn't caused via JanusSession.send, or a plugin replied twice to a\n // single request, or the session was disposed, or something else that isn't under our purview; that's fine\n return;\n }\n\n if (responseType === \"ack\" && txn.type == \"message\") {\n // this is an ack of an asynchronously-processed plugin request, we should wait to resolve the promise until the\n // actual response comes in\n return;\n }\n\n clearTimeout(txn.timeout);\n\n delete this.txns[signal.transaction];\n (this.isError(signal) ? txn.reject : txn.resolve)(signal);\n }\n};\n\n/**\n * Sends a signal associated with this session, beginning a new transaction. Returns a promise that will be resolved or\n * rejected when a response is received in the same transaction, or when no response is received within the session\n * timeout.\n **/\nJanusSession.prototype.send = function(type, signal) {\n signal = Object.assign({ transaction: (this.nextTxId++).toString() }, signal);\n return new Promise((resolve, reject) => {\n var timeout = null;\n if (this.options.timeoutMs) {\n timeout = setTimeout(() => {\n delete this.txns[signal.transaction];\n reject(new Error(\"Signalling transaction with txid \" + signal.transaction + \" timed out.\"));\n }, this.options.timeoutMs);\n }\n this.txns[signal.transaction] = { resolve: resolve, reject: reject, timeout: timeout, type: type };\n this._transmit(type, signal);\n });\n};\n\nJanusSession.prototype._transmit = function(type, signal) {\n signal = Object.assign({ janus: type }, signal);\n\n if (this.id != null) { // this.id is undefined in the special case when we're sending the session create message\n signal = Object.assign({ session_id: this.id }, signal);\n }\n\n if (this.options.verbose) {\n this._logOutgoing(signal);\n }\n\n this.output(JSON.stringify(signal));\n this._resetKeepalive();\n};\n\nJanusSession.prototype._logOutgoing = function(signal) {\n var kind = signal.janus;\n if (kind === \"message\" && signal.jsep) {\n kind = signal.jsep.type;\n }\n var message = \"> Outgoing Janus \" + (kind || \"signal\") + \" (#\" + signal.transaction + \"): \";\n console.debug(\"%c\" + message, \"color: #040\", signal);\n};\n\nJanusSession.prototype._logIncoming = function(signal) {\n var kind = signal.janus;\n var message = signal.transaction ?\n \"< Incoming Janus \" + (kind || \"signal\") + \" (#\" + signal.transaction + \"): \" :\n \"< Incoming Janus \" + (kind || \"signal\") + \": \";\n console.debug(\"%c\" + message, \"color: #004\", signal);\n};\n\nJanusSession.prototype._sendKeepalive = function() {\n return this.send(\"keepalive\");\n};\n\nJanusSession.prototype._killKeepalive = function() {\n clearTimeout(this.keepaliveTimeout);\n};\n\nJanusSession.prototype._resetKeepalive = function() {\n this._killKeepalive();\n if (this.options.keepaliveMs) {\n this.keepaliveTimeout = setTimeout(() => {\n this._sendKeepalive().catch(e => console.error(\"Error received from keepalive: \", e));\n }, this.options.keepaliveMs);\n }\n};\n\nmodule.exports = {\n JanusPluginHandle,\n JanusSession\n};\n","/* global NAF */\nvar mj = require(\"@networked-aframe/minijanus\");\nmj.JanusSession.prototype.sendOriginal = mj.JanusSession.prototype.send;\nmj.JanusSession.prototype.send = function(type, signal) {\n return this.sendOriginal(type, signal).catch((e) => {\n if (e.message && e.message.indexOf(\"timed out\") > -1) {\n console.error(\"web socket timed out\");\n NAF.connection.adapter.reconnect();\n } else {\n throw(e);\n }\n });\n}\n\nvar sdpUtils = require(\"sdp\");\nvar debug = require(\"debug\")(\"naf-janus-adapter:debug\");\nvar warn = require(\"debug\")(\"naf-janus-adapter:warn\");\nvar error = require(\"debug\")(\"naf-janus-adapter:error\");\nvar isSafari = /^((?!chrome|android).)*safari/i.test(navigator.userAgent);\n\nconst SUBSCRIBE_TIMEOUT_MS = 15000;\n\nconst AVAILABLE_OCCUPANTS_THRESHOLD = 5;\nconst MAX_SUBSCRIBE_DELAY = 5000;\n\nfunction randomDelay(min, max) {\n return new Promise(resolve => {\n const delay = Math.random() * (max - min) + min;\n setTimeout(resolve, delay);\n });\n}\n\nfunction debounce(fn) {\n var curr = Promise.resolve();\n return function() {\n var args = Array.prototype.slice.call(arguments);\n curr = curr.then(_ => fn.apply(this, args));\n };\n}\n\nfunction randomUint() {\n return Math.floor(Math.random() * Number.MAX_SAFE_INTEGER);\n}\n\nfunction untilDataChannelOpen(dataChannel) {\n return new Promise((resolve, reject) => {\n if (dataChannel.readyState === \"open\") {\n resolve();\n } else {\n let resolver, rejector;\n\n const clear = () => {\n dataChannel.removeEventListener(\"open\", resolver);\n dataChannel.removeEventListener(\"error\", rejector);\n };\n\n resolver = () => {\n clear();\n resolve();\n };\n rejector = () => {\n clear();\n reject();\n };\n\n dataChannel.addEventListener(\"open\", resolver);\n dataChannel.addEventListener(\"error\", rejector);\n }\n });\n}\n\nconst isH264VideoSupported = (() => {\n const video = document.createElement(\"video\");\n return video.canPlayType('video/mp4; codecs=\"avc1.42E01E, mp4a.40.2\"') !== \"\";\n})();\n\nconst OPUS_PARAMETERS = {\n // indicates that we want to enable DTX to elide silence packets\n usedtx: 1,\n // indicates that we prefer to receive mono audio (important for voip profile)\n stereo: 0,\n // indicates that we prefer to send mono audio (important for voip profile)\n \"sprop-stereo\": 0\n};\n\nconst DEFAULT_PEER_CONNECTION_CONFIG = {\n iceServers: [{ urls: \"stun:stun1.l.google.com:19302\" }, { urls: \"stun:stun2.l.google.com:19302\" }]\n};\n\nconst WS_NORMAL_CLOSURE = 1000;\n\nclass JanusAdapter {\n constructor() {\n this.room = null;\n // We expect the consumer to set a client id before connecting.\n this.clientId = null;\n this.joinToken = null;\n\n this.serverUrl = null;\n this.webRtcOptions = {};\n this.peerConnectionConfig = null;\n this.ws = null;\n this.session = null;\n this.reliableTransport = \"datachannel\";\n this.unreliableTransport = \"datachannel\";\n\n // In the event the server restarts and all clients lose connection, reconnect with\n // some random jitter added to prevent simultaneous reconnection requests.\n this.initialReconnectionDelay = 1000 * Math.random();\n this.reconnectionDelay = this.initialReconnectionDelay;\n this.reconnectionTimeout = null;\n this.maxReconnectionAttempts = 10;\n this.reconnectionAttempts = 0;\n this.isReconnecting = false;\n\n this.publisher = null;\n this.occupantIds = [];\n this.occupants = {};\n this.mediaStreams = {};\n this.localMediaStream = null;\n this.pendingMediaRequests = new Map();\n\n this.pendingOccupants = new Set();\n this.availableOccupants = [];\n this.requestedOccupants = null;\n\n this.blockedClients = new Map();\n this.frozenUpdates = new Map();\n\n this.timeOffsets = [];\n this.serverTimeRequests = 0;\n this.avgTimeOffset = 0;\n\n this.onWebsocketOpen = this.onWebsocketOpen.bind(this);\n this.onWebsocketClose = this.onWebsocketClose.bind(this);\n this.onWebsocketMessage = this.onWebsocketMessage.bind(this);\n this.onDataChannelMessage = this.onDataChannelMessage.bind(this);\n this.onData = this.onData.bind(this);\n }\n\n setServerUrl(url) {\n this.serverUrl = url;\n }\n\n setApp(app) {}\n\n setRoom(roomName) {\n this.room = roomName;\n }\n\n setJoinToken(joinToken) {\n this.joinToken = joinToken;\n }\n\n setClientId(clientId) {\n this.clientId = clientId;\n }\n\n setWebRtcOptions(options) {\n this.webRtcOptions = options;\n }\n\n setPeerConnectionConfig(peerConnectionConfig) {\n this.peerConnectionConfig = peerConnectionConfig;\n }\n\n setServerConnectListeners(successListener, failureListener) {\n this.connectSuccess = successListener;\n this.connectFailure = failureListener;\n }\n\n setRoomOccupantListener(occupantListener) {\n this.onOccupantsChanged = occupantListener;\n }\n\n setDataChannelListeners(openListener, closedListener, messageListener) {\n this.onOccupantConnected = openListener;\n this.onOccupantDisconnected = closedListener;\n this.onOccupantMessage = messageListener;\n }\n\n setReconnectionListeners(reconnectingListener, reconnectedListener, reconnectionErrorListener) {\n // onReconnecting is called with the number of milliseconds until the next reconnection attempt\n this.onReconnecting = reconnectingListener;\n // onReconnected is called when the connection has been reestablished\n this.onReconnected = reconnectedListener;\n // onReconnectionError is called with an error when maxReconnectionAttempts has been reached\n this.onReconnectionError = reconnectionErrorListener;\n }\n\n setEventLoops(loops) {\n this.loops = loops;\n }\n\n connect() {\n if (this.serverUrl === '/') {\n this.serverUrl = '/janus';\n }\n if (this.serverUrl === '/janus') {\n if (location.protocol === 'https:') {\n this.serverUrl = 'wss://' + location.host + '/janus';\n } else {\n this.serverUrl = 'ws://' + location.host + '/janus';\n }\n }\n debug(`connecting to ${this.serverUrl}`);\n\n const websocketConnection = new Promise((resolve, reject) => {\n this.ws = new WebSocket(this.serverUrl, \"janus-protocol\");\n\n this.session = new mj.JanusSession(this.ws.send.bind(this.ws), { timeoutMs: 40000 });\n\n this.websocketConnectionPromise = {};\n this.websocketConnectionPromise.resolve = resolve;\n this.websocketConnectionPromise.reject = reject;\n\n this.ws.addEventListener(\"close\", this.onWebsocketClose);\n this.ws.addEventListener(\"message\", this.onWebsocketMessage);\n\n this.wsOnOpen = () => {\n this.ws.removeEventListener(\"open\", this.wsOnOpen);\n this.onWebsocketOpen()\n .then(resolve)\n .catch(reject);\n };\n\n this.ws.addEventListener(\"open\", this.wsOnOpen);\n });\n\n return Promise.all([websocketConnection, this.updateTimeOffset()]);\n }\n\n disconnect() {\n debug(`disconnecting`);\n\n clearTimeout(this.reconnectionTimeout);\n\n this.removeAllOccupants();\n\n if (this.publisher) {\n // Close the publisher peer connection. Which also detaches the plugin handle.\n this.publisher.conn.close();\n this.publisher = null;\n }\n\n if (this.session) {\n this.session.dispose();\n this.session = null;\n }\n\n if (this.ws) {\n this.ws.removeEventListener(\"open\", this.wsOnOpen);\n this.ws.removeEventListener(\"close\", this.onWebsocketClose);\n this.ws.removeEventListener(\"message\", this.onWebsocketMessage);\n this.ws.close();\n this.ws = null;\n }\n\n // Now that all RTCPeerConnection closed, be sure to not call\n // reconnect() again via performDelayedReconnect if previous\n // RTCPeerConnection was in the failed state.\n if (this.delayedReconnectTimeout) {\n clearTimeout(this.delayedReconnectTimeout);\n this.delayedReconnectTimeout = null;\n }\n }\n\n isDisconnected() {\n return this.ws === null;\n }\n\n async onWebsocketOpen() {\n // Create the Janus Session\n await this.session.create();\n\n // Attach the SFU Plugin and create a RTCPeerConnection for the publisher.\n // The publisher sends audio and opens two bidirectional data channels.\n // One reliable datachannel and one unreliable.\n this.publisher = await this.createPublisher();\n\n // Call the naf connectSuccess callback before we start receiving WebRTC messages.\n this.connectSuccess(this.clientId);\n\n for (let i = 0; i < this.publisher.initialOccupants.length; i++) {\n const occupantId = this.publisher.initialOccupants[i];\n if (occupantId === this.clientId) continue; // Happens during non-graceful reconnects due to zombie sessions\n this.addAvailableOccupant(occupantId);\n }\n\n this.syncOccupants();\n }\n\n onWebsocketClose(event) {\n // The connection was closed successfully. Don't try to reconnect.\n if (event.code === WS_NORMAL_CLOSURE) {\n return;\n }\n\n this.websocketConnectionPromise.reject(event);\n\n if (!this.isReconnecting) {\n this.isReconnecting = true;\n console.warn(\"Janus websocket closed unexpectedly.\");\n if (this.onReconnecting) {\n this.onReconnecting(this.reconnectionDelay);\n }\n\n this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay);\n }\n }\n\n reconnect() {\n // Dispose of all networked entities and other resources tied to the session.\n this.disconnect();\n\n this.connect()\n .then(() => {\n this.reconnectionDelay = this.initialReconnectionDelay;\n this.reconnectionAttempts = 0;\n this.isReconnecting = false;\n\n if (this.onReconnected) {\n this.onReconnected();\n }\n })\n .catch(error => {\n this.reconnectionDelay += 1000;\n this.reconnectionAttempts++;\n\n if (this.reconnectionAttempts > this.maxReconnectionAttempts) {\n const error = new Error(\n \"Connection could not be reestablished, exceeded maximum number of reconnection attempts.\"\n );\n if (this.onReconnectionError) {\n return this.onReconnectionError(error);\n } else {\n console.warn(error);\n return;\n }\n }\n\n console.warn(\"Error during reconnect, retrying.\");\n console.warn(error);\n\n if (this.onReconnecting) {\n this.onReconnecting(this.reconnectionDelay);\n }\n\n this.reconnectionTimeout = setTimeout(() => this.reconnect(), this.reconnectionDelay);\n });\n }\n\n performDelayedReconnect() {\n if (this.delayedReconnectTimeout) {\n clearTimeout(this.delayedReconnectTimeout);\n }\n\n this.delayedReconnectTimeout = setTimeout(() => {\n this.delayedReconnectTimeout = null;\n this.reconnect();\n }, 10000);\n }\n\n onWebsocketMessage(event) {\n this.session.receive(JSON.parse(event.data));\n }\n\n addAvailableOccupant(occupantId) {\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n this.availableOccupants.push(occupantId);\n }\n }\n\n removeAvailableOccupant(occupantId) {\n const idx = this.availableOccupants.indexOf(occupantId);\n if (idx !== -1) {\n this.availableOccupants.splice(idx, 1);\n }\n }\n\n syncOccupants(requestedOccupants) {\n if (requestedOccupants) {\n this.requestedOccupants = requestedOccupants;\n }\n\n if (!this.requestedOccupants) {\n return;\n }\n\n // Add any requested, available, and non-pending occupants.\n for (let i = 0; i < this.requestedOccupants.length; i++) {\n const occupantId = this.requestedOccupants[i];\n if (!this.occupants[occupantId] && this.availableOccupants.indexOf(occupantId) !== -1 && !this.pendingOccupants.has(occupantId)) {\n this.addOccupant(occupantId);\n }\n }\n\n // Remove any unrequested and currently added occupants.\n for (let j = 0; j < this.availableOccupants.length; j++) {\n const occupantId = this.availableOccupants[j];\n if (this.occupants[occupantId] && this.requestedOccupants.indexOf(occupantId) === -1) {\n this.removeOccupant(occupantId);\n }\n }\n\n // Call the Networked AFrame callbacks for the updated occupants list.\n this.onOccupantsChanged(this.occupants);\n }\n\n async addOccupant(occupantId) {\n this.pendingOccupants.add(occupantId);\n \n const availableOccupantsCount = this.availableOccupants.length;\n if (availableOccupantsCount > AVAILABLE_OCCUPANTS_THRESHOLD) {\n await randomDelay(0, MAX_SUBSCRIBE_DELAY);\n }\n \n const subscriber = await this.createSubscriber(occupantId);\n if (subscriber) {\n if(!this.pendingOccupants.has(occupantId)) {\n subscriber.conn.close();\n } else {\n this.pendingOccupants.delete(occupantId);\n this.occupantIds.push(occupantId);\n this.occupants[occupantId] = subscriber;\n\n this.setMediaStream(occupantId, subscriber.mediaStream);\n\n // Call the Networked AFrame callbacks for the new occupant.\n this.onOccupantConnected(occupantId);\n }\n }\n }\n\n removeAllOccupants() {\n this.pendingOccupants.clear();\n for (let i = this.occupantIds.length - 1; i >= 0; i--) {\n this.removeOccupant(this.occupantIds[i]);\n }\n }\n\n removeOccupant(occupantId) {\n this.pendingOccupants.delete(occupantId);\n \n if (this.occupants[occupantId]) {\n // Close the subscriber peer connection. Which also detaches the plugin handle.\n this.occupants[occupantId].conn.close();\n delete this.occupants[occupantId];\n \n this.occupantIds.splice(this.occupantIds.indexOf(occupantId), 1);\n }\n\n if (this.mediaStreams[occupantId]) {\n delete this.mediaStreams[occupantId];\n }\n\n if (this.pendingMediaRequests.has(occupantId)) {\n const msg = \"The user disconnected before the media stream was resolved.\";\n this.pendingMediaRequests.get(occupantId).audio.reject(msg);\n this.pendingMediaRequests.get(occupantId).video.reject(msg);\n this.pendingMediaRequests.delete(occupantId);\n }\n\n // Call the Networked AFrame callbacks for the removed occupant.\n this.onOccupantDisconnected(occupantId);\n }\n\n associate(conn, handle) {\n conn.addEventListener(\"icecandidate\", ev => {\n handle.sendTrickle(ev.candidate || null).catch(e => error(\"Error trickling ICE: %o\", e));\n });\n conn.addEventListener(\"iceconnectionstatechange\", ev => {\n if (conn.iceConnectionState === \"connected\") {\n console.log(\"ICE state changed to connected\");\n }\n if (conn.iceConnectionState === \"disconnected\") {\n console.warn(\"ICE state changed to disconnected\");\n }\n if (conn.iceConnectionState === \"failed\") {\n console.warn(\"ICE failure detected. Reconnecting in 10s.\");\n this.performDelayedReconnect();\n }\n })\n\n // we have to debounce these because janus gets angry if you send it a new SDP before\n // it's finished processing an existing SDP. in actuality, it seems like this is maybe\n // too liberal and we need to wait some amount of time after an offer before sending another,\n // but we don't currently know any good way of detecting exactly how long :(\n conn.addEventListener(\n \"negotiationneeded\",\n debounce(ev => {\n debug(\"Sending new offer for handle: %o\", handle);\n var offer = conn.createOffer().then(this.configurePublisherSdp).then(this.fixSafariIceUFrag);\n var local = offer.then(o => conn.setLocalDescription(o));\n var remote = offer;\n\n remote = remote\n .then(this.fixSafariIceUFrag)\n .then(j => handle.sendJsep(j))\n .then(r => conn.setRemoteDescription(r.jsep));\n return Promise.all([local, remote]).catch(e => error(\"Error negotiating offer: %o\", e));\n })\n );\n handle.on(\n \"event\",\n debounce(ev => {\n var jsep = ev.jsep;\n if (jsep && jsep.type == \"offer\") {\n debug(\"Accepting new offer for handle: %o\", handle);\n var answer = conn\n .setRemoteDescription(this.configureSubscriberSdp(jsep))\n .then(_ => conn.createAnswer())\n .then(this.fixSafariIceUFrag);\n var local = answer.then(a => conn.setLocalDescription(a));\n var remote = answer.then(j => handle.sendJsep(j));\n return Promise.all([local, remote]).catch(e => error(\"Error negotiating answer: %o\", e));\n } else {\n // some other kind of event, nothing to do\n return null;\n }\n })\n );\n }\n\n async createPublisher() {\n var handle = new mj.JanusPluginHandle(this.session);\n var conn = new RTCPeerConnection(this.peerConnectionConfig || DEFAULT_PEER_CONNECTION_CONFIG);\n\n debug(\"pub waiting for sfu\");\n await handle.attach(\"janus.plugin.sfu\", this.loops && this.clientId ? parseInt(this.clientId) % this.loops : undefined);\n\n this.associate(conn, handle);\n\n debug(\"pub waiting for data channels & webrtcup\");\n var webrtcup = new Promise(resolve => handle.on(\"webrtcup\", resolve));\n\n // Unreliable datachannel: sending and receiving component updates.\n // Reliable datachannel: sending and recieving entity instantiations.\n var reliableChannel = conn.createDataChannel(\"reliable\", { ordered: true });\n var unreliableChannel = conn.createDataChannel(\"unreliable\", {\n ordered: false,\n maxRetransmits: 0\n });\n\n reliableChannel.addEventListener(\"message\", e => this.onDataChannelMessage(e, \"janus-reliable\"));\n unreliableChannel.addEventListener(\"message\", e => this.onDataChannelMessage(e, \"janus-unreliable\"));\n\n await webrtcup;\n await untilDataChannelOpen(reliableChannel);\n await untilDataChannelOpen(unreliableChannel);\n\n // doing this here is sort of a hack around chrome renegotiation weirdness --\n // if we do it prior to webrtcup, chrome on gear VR will sometimes put a\n // renegotiation offer in flight while the first offer was still being\n // processed by janus. we should find some more principled way to figure out\n // when janus is done in the future.\n if (this.localMediaStream) {\n this.localMediaStream.getTracks().forEach(track => {\n conn.addTrack(track, this.localMediaStream);\n });\n }\n\n // Handle all of the join and leave events.\n handle.on(\"event\", ev => {\n var data = ev.plugindata.data;\n if (data.event == \"join\" && data.room_id == this.room) {\n if (this.delayedReconnectTimeout) {\n // Don't create a new RTCPeerConnection, all RTCPeerConnection will be closed in less than 10s.\n return;\n }\n this.addAvailableOccupant(data.user_id);\n this.syncOccupants();\n } else if (data.event == \"leave\" && data.room_id == this.room) {\n this.removeAvailableOccupant(data.user_id);\n this.removeOccupant(data.user_id);\n } else if (data.event == \"blocked\") {\n document.body.dispatchEvent(new CustomEvent(\"blocked\", { detail: { clientId: data.by } }));\n } else if (data.event == \"unblocked\") {\n document.body.dispatchEvent(new CustomEvent(\"unblocked\", { detail: { clientId: data.by } }));\n } else if (data.event === \"data\") {\n this.onData(JSON.parse(data.body), \"janus-event\");\n }\n });\n\n debug(\"pub waiting for join\");\n\n // Send join message to janus. Listen for join/leave messages. Automatically subscribe to all users' WebRTC data.\n var message = await this.sendJoin(handle, {\n notifications: true,\n data: true\n });\n\n if (!message.plugindata.data.success) {\n const err = message.plugindata.data.error;\n console.error(err);\n // We may get here because of an expired JWT.\n // Close the connection ourself otherwise janus will close it after\n // session_timeout because we didn't send any keepalive and this will\n // trigger a delayed reconnect because of the iceconnectionstatechange\n // listener for failure state.\n // Even if the app code calls disconnect in case of error, disconnect\n // won't close the peer connection because this.publisher is not set.\n conn.close();\n throw err;\n }\n\n var initialOccupants = message.plugindata.data.response.users[this.room] || [];\n\n if (initialOccupants.includes(this.clientId)) {\n console.warn(\"Janus still has previous session for this client. Reconnecting in 10s.\");\n this.performDelayedReconnect();\n }\n\n debug(\"publisher ready\");\n return {\n handle,\n initialOccupants,\n reliableChannel,\n unreliableChannel,\n conn\n };\n }\n\n configurePublisherSdp(jsep) {\n jsep.sdp = jsep.sdp.replace(/a=fmtp:(109|111).*\\r\\n/g, (line, pt) => {\n const parameters = Object.assign(sdpUtils.parseFmtp(line), OPUS_PARAMETERS);\n return sdpUtils.writeFmtp({ payloadType: pt, parameters: parameters });\n });\n return jsep;\n }\n\n configureSubscriberSdp(jsep) {\n // todo: consider cleaning up these hacks to use sdputils\n if (!isH264VideoSupported) {\n if (navigator.userAgent.indexOf(\"HeadlessChrome\") !== -1) {\n // HeadlessChrome (e.g. puppeteer) doesn't support webrtc video streams, so we remove those lines from the SDP.\n jsep.sdp = jsep.sdp.replace(/m=video[^]*m=/, \"m=\");\n }\n }\n\n // TODO: Hack to get video working on Chrome for Android. https://groups.google.com/forum/#!topic/mozilla.dev.media/Ye29vuMTpo8\n if (navigator.userAgent.indexOf(\"Android\") === -1) {\n jsep.sdp = jsep.sdp.replace(\n \"a=rtcp-fb:107 goog-remb\\r\\n\",\n \"a=rtcp-fb:107 goog-remb\\r\\na=rtcp-fb:107 transport-cc\\r\\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42e01f\\r\\n\"\n );\n } else {\n jsep.sdp = jsep.sdp.replace(\n \"a=rtcp-fb:107 goog-remb\\r\\n\",\n \"a=rtcp-fb:107 goog-remb\\r\\na=rtcp-fb:107 transport-cc\\r\\na=fmtp:107 level-asymmetry-allowed=1;packetization-mode=1;profile-level-id=42001f\\r\\n\"\n );\n }\n return jsep;\n }\n\n async fixSafariIceUFrag(jsep) {\n // Safari produces a \\n instead of an \\r\\n for the ice-ufrag. See https://github.com/meetecho/janus-gateway/issues/1818\n jsep.sdp = jsep.sdp.replace(/[^\\r]\\na=ice-ufrag/g, \"\\r\\na=ice-ufrag\");\n return jsep\n }\n\n async createSubscriber(occupantId, maxRetries = 5) {\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n console.warn(occupantId + \": cancelled occupant connection, occupant left before subscription negotation.\");\n return null;\n }\n\n var handle = new mj.JanusPluginHandle(this.session);\n var conn = new RTCPeerConnection(this.peerConnectionConfig || DEFAULT_PEER_CONNECTION_CONFIG);\n\n debug(occupantId + \": sub waiting for sfu\");\n await handle.attach(\"janus.plugin.sfu\", this.loops ? parseInt(occupantId) % this.loops : undefined);\n\n this.associate(conn, handle);\n\n debug(occupantId + \": sub waiting for join\");\n\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n conn.close();\n console.warn(occupantId + \": cancelled occupant connection, occupant left after attach\");\n return null;\n }\n\n let webrtcFailed = false;\n\n const webrtcup = new Promise(resolve => {\n const leftInterval = setInterval(() => {\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n clearInterval(leftInterval);\n resolve();\n }\n }, 1000);\n\n const timeout = setTimeout(() => {\n clearInterval(leftInterval);\n webrtcFailed = true;\n resolve();\n }, SUBSCRIBE_TIMEOUT_MS);\n\n handle.on(\"webrtcup\", () => {\n clearTimeout(timeout);\n clearInterval(leftInterval);\n resolve();\n });\n });\n\n // Send join message to janus. Don't listen for join/leave messages. Subscribe to the occupant's media.\n // Janus should send us an offer for this occupant's media in response to this.\n await this.sendJoin(handle, { media: occupantId });\n\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n conn.close();\n console.warn(occupantId + \": cancelled occupant connection, occupant left after join\");\n return null;\n }\n\n debug(occupantId + \": sub waiting for webrtcup\");\n await webrtcup;\n\n if (this.availableOccupants.indexOf(occupantId) === -1) {\n conn.close();\n console.warn(occupantId + \": cancel occupant connection, occupant left during or after webrtcup\");\n return null;\n }\n\n if (webrtcFailed) {\n conn.close();\n if (maxRetries > 0) {\n console.warn(occupantId + \": webrtc up timed out, retrying\");\n return this.createSubscriber(occupantId, maxRetries - 1);\n } else {\n console.warn(occupantId + \": webrtc up timed out\");\n return null;\n }\n }\n\n if (isSafari && !this._iOSHackDelayedInitialPeer) {\n // HACK: the first peer on Safari during page load can fail to work if we don't\n // wait some time before continuing here. See: https://github.com/mozilla/hubs/pull/1692\n await (new Promise((resolve) => setTimeout(resolve, 3000)));\n this._iOSHackDelayedInitialPeer = true;\n }\n\n var mediaStream = new MediaStream();\n var receivers = conn.getReceivers();\n receivers.forEach(receiver => {\n if (receiver.track) {\n mediaStream.addTrack(receiver.track);\n }\n });\n if (mediaStream.getTracks().length === 0) {\n mediaStream = null;\n }\n\n debug(occupantId + \": subscriber ready\");\n return {\n handle,\n mediaStream,\n conn\n };\n }\n\n sendJoin(handle, subscribe) {\n return handle.sendMessage({\n kind: \"join\",\n room_id: this.room,\n user_id: this.clientId,\n subscribe,\n token: this.joinToken\n });\n }\n\n toggleFreeze() {\n if (this.frozen) {\n this.unfreeze();\n } else {\n this.freeze();\n }\n }\n\n freeze() {\n this.frozen = true;\n }\n\n unfreeze() {\n this.frozen = false;\n this.flushPendingUpdates();\n }\n\n dataForUpdateMultiMessage(networkId, message) {\n // \"d\" is an array of entity datas, where each item in the array represents a unique entity and contains\n // metadata for the entity, and an array of components that have been updated on the entity.\n // This method finds the data corresponding to the given networkId.\n for (let i = 0, l = message.data.d.length; i < l; i++) {\n const data = message.data.d[i];\n\n if (data.networkId === networkId) {\n return data;\n }\n }\n\n return null;\n }\n\n getPendingData(networkId, message) {\n if (!message) return null;\n\n let data = message.dataType === \"um\" ? this.dataForUpdateMultiMessage(networkId, message) : message.data;\n\n // Ignore messages relating to users who have disconnected since freezing, their entities\n // will have aleady been removed by NAF.\n // Note that delete messages have no \"owner\" so we have to check for that as well.\n if (data.owner && !this.occupants[data.owner]) return null;\n\n // Ignore messages from users that we may have blocked while frozen.\n if (data.owner && this.blockedClients.has(data.owner)) return null;\n\n return data\n }\n\n // Used externally\n getPendingDataForNetworkId(networkId) {\n return this.getPendingData(networkId, this.frozenUpdates.get(networkId));\n }\n\n flushPendingUpdates() {\n for (const [networkId, message] of this.frozenUpdates) {\n let data = this.getPendingData(networkId, message);\n if (!data) continue;\n\n // Override the data type on \"um\" messages types, since we extract entity updates from \"um\" messages into\n // individual frozenUpdates in storeSingleMessage.\n const dataType = message.dataType === \"um\" ? \"u\" : message.dataType;\n\n this.onOccupantMessage(null, dataType, data, message.source);\n }\n this.frozenUpdates.clear();\n }\n\n storeMessage(message) {\n if (message.dataType === \"um\") { // UpdateMulti\n for (let i = 0, l = message.data.d.length; i < l; i++) {\n this.storeSingleMessage(message, i);\n }\n } else {\n this.storeSingleMessage(message);\n }\n }\n\n storeSingleMessage(message, index) {\n const data = index !== undefined ? message.data.d[index] : message.data;\n const dataType = message.dataType;\n const source = message.source;\n\n const networkId = data.networkId;\n\n if (!this.frozenUpdates.has(networkId)) {\n this.frozenUpdates.set(networkId, message);\n } else {\n const storedMessage = this.frozenUpdates.get(networkId);\n const storedData = storedMessage.dataType === \"um\" ? this.dataForUpdateMultiMessage(networkId, storedMessage) : storedMessage.data;\n\n // Avoid updating components if the entity data received did not come from the current owner.\n const isOutdatedMessage = data.lastOwnerTime < storedData.lastOwnerTime;\n const isContemporaneousMessage = data.lastOwnerTime === storedData.lastOwnerTime;\n if (isOutdatedMessage || (isContemporaneousMessage && storedData.owner > data.owner)) {\n return;\n }\n\n if (dataType === \"r\") {\n const createdWhileFrozen = storedData && storedData.isFirstSync;\n if (createdWhileFrozen) {\n // If the entity was created and deleted while frozen, don't bother conveying anything to the consumer.\n this.frozenUpdates.delete(networkId);\n } else {\n // Delete messages override any other messages for this entity\n this.frozenUpdates.set(networkId, message);\n }\n } else {\n // merge in component updates\n if (storedData.components && data.components) {\n Object.assign(storedData.components, data.components);\n }\n }\n }\n }\n\n onDataChannelMessage(e, source) {\n this.onData(JSON.parse(e.data), source);\n }\n\n onData(message, source) {\n if (debug.enabled) {\n debug(`DC in: ${message}`);\n }\n\n if (!message.dataType) return;\n\n message.source = source;\n\n if (this.frozen) {\n this.storeMessage(message);\n } else {\n this.onOccupantMessage(null, message.dataType, message.data, message.source);\n }\n }\n\n shouldStartConnectionTo(client) {\n return true;\n }\n\n startStreamConnection(client) {}\n\n closeStreamConnection(client) {}\n\n getConnectStatus(clientId) {\n return this.occupants[clientId] ? NAF.adapters.IS_CONNECTED : NAF.adapters.NOT_CONNECTED;\n }\n\n async updateTimeOffset() {\n if (this.isDisconnected()) return;\n\n const clientSentTime = Date.now();\n\n const res = await fetch(document.location.href, {\n method: \"HEAD\",\n cache: \"no-cache\"\n });\n\n const precision = 1000;\n const serverReceivedTime = new Date(res.headers.get(\"Date\")).getTime() + precision / 2;\n const clientReceivedTime = Date.now();\n const serverTime = serverReceivedTime + (clientReceivedTime - clientSentTime) / 2;\n const timeOffset = serverTime - clientReceivedTime;\n\n this.serverTimeRequests++;\n\n if (this.serverTimeRequests <= 10) {\n this.timeOffsets.push(timeOffset);\n } else {\n this.timeOffsets[this.serverTimeRequests % 10] = timeOffset;\n }\n\n this.avgTimeOffset = this.timeOffsets.reduce((acc, offset) => (acc += offset), 0) / this.timeOffsets.length;\n\n if (this.serverTimeRequests > 10) {\n debug(`new server time offset: ${this.avgTimeOffset}ms`);\n setTimeout(() => this.updateTimeOffset(), 5 * 60 * 1000); // Sync clock every 5 minutes.\n } else {\n this.updateTimeOffset();\n }\n }\n\n getServerTime() {\n return Date.now() + this.avgTimeOffset;\n }\n\n getMediaStream(clientId, type = \"audio\") {\n if (this.mediaStreams[clientId]) {\n debug(`Already had ${type} for ${clientId}`);\n return Promise.resolve(this.mediaStreams[clientId][type]);\n } else {\n debug(`Waiting on ${type} for ${clientId}`);\n if (!this.pendingMediaRequests.has(clientId)) {\n this.pendingMediaRequests.set(clientId, {});\n\n const audioPromise = new Promise((resolve, reject) => {\n this.pendingMediaRequests.get(clientId).audio = { resolve, reject };\n });\n const videoPromise = new Promise((resolve, reject) => {\n this.pendingMediaRequests.get(clientId).video = { resolve, reject };\n });\n\n this.pendingMediaRequests.get(clientId).audio.promise = audioPromise;\n this.pendingMediaRequests.get(clientId).video.promise = videoPromise;\n\n audioPromise.catch(e => console.warn(`${clientId} getMediaStream Audio Error`, e));\n videoPromise.catch(e => console.warn(`${clientId} getMediaStream Video Error`, e));\n }\n return this.pendingMediaRequests.get(clientId)[type].promise;\n }\n }\n\n setMediaStream(clientId, stream) {\n // Safari doesn't like it when you use single a mixed media stream where one of the tracks is inactive, so we\n // split the tracks into two streams.\n const audioStream = new MediaStream();\n try {\n stream.getAudioTracks().forEach(track => audioStream.addTrack(track));\n\n } catch(e) {\n console.warn(`${clientId} setMediaStream Audio Error`, e);\n }\n const videoStream = new MediaStream();\n try {\n stream.getVideoTracks().forEach(track => videoStream.addTrack(track));\n\n } catch (e) {\n console.warn(`${clientId} setMediaStream Video Error`, e);\n }\n\n this.mediaStreams[clientId] = { audio: audioStream, video: videoStream };\n\n // Resolve the promise for the user's media stream if it exists.\n if (this.pendingMediaRequests.has(clientId)) {\n this.pendingMediaRequests.get(clientId).audio.resolve(audioStream);\n this.pendingMediaRequests.get(clientId).video.resolve(videoStream);\n }\n }\n\n getLocalMediaStream() {\n return this.localMediaStream;\n }\n\n async setLocalMediaStream(stream) {\n // our job here is to make sure the connection winds up with RTP senders sending the stuff in this stream,\n // and not the stuff that isn't in this stream. strategy is to replace existing tracks if we can, add tracks\n // that we can't replace, and disable tracks that don't exist anymore.\n\n // note that we don't ever remove a track from the stream -- since Janus doesn't support Unified Plan, we absolutely\n // can't wind up with a SDP that has >1 audio or >1 video tracks, even if one of them is inactive (what you get if\n // you remove a track from an existing stream.)\n if (this.publisher && this.publisher.conn) {\n const existingSenders = this.publisher.conn.getSenders();\n const newSenders = [];\n const tracks = stream.getTracks();\n\n for (let i = 0; i < tracks.length; i++) {\n const t = tracks[i];\n const sender = existingSenders.find(s => s.track != null && s.track.kind == t.kind);\n\n if (sender != null) {\n if (sender.replaceTrack) {\n await sender.replaceTrack(t);\n } else {\n // Fallback for browsers that don't support replaceTrack. At this time of this writing\n // most browsers support it, and testing this code path seems to not work properly\n // in Chrome anymore.\n stream.removeTrack(sender.track);\n stream.addTrack(t);\n }\n newSenders.push(sender);\n } else {\n newSenders.push(this.publisher.conn.addTrack(t, stream));\n }\n }\n existingSenders.forEach(s => {\n if (!newSenders.includes(s)) {\n s.track.enabled = false;\n }\n });\n }\n this.localMediaStream = stream;\n this.setMediaStream(this.clientId, stream);\n }\n\n enableMicrophone(enabled) {\n if (this.publisher && this.publisher.conn) {\n this.publisher.conn.getSenders().forEach(s => {\n if (s.track.kind == \"audio\") {\n s.track.enabled = enabled;\n }\n });\n }\n }\n\n sendData(clientId, dataType, data) {\n if (!this.publisher) {\n console.warn(\"sendData called without a publisher\");\n } else {\n switch (this.unreliableTransport) {\n case \"websocket\":\n if (this.ws.readyState === 1) { // OPEN\n this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }), whom: clientId });\n }\n break;\n case \"datachannel\":\n if (this.publisher.unreliableChannel.readyState === \"open\") {\n this.publisher.unreliableChannel.send(JSON.stringify({ clientId, dataType, data }));\n }\n break;\n default:\n this.unreliableTransport(clientId, dataType, data);\n break;\n }\n }\n }\n\n sendDataGuaranteed(clientId, dataType, data) {\n if (!this.publisher) {\n console.warn(\"sendDataGuaranteed called without a publisher\");\n } else {\n switch (this.reliableTransport) {\n case \"websocket\":\n if (this.ws.readyState === 1) { // OPEN\n this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }), whom: clientId });\n }\n break;\n case \"datachannel\":\n if (this.publisher.reliableChannel.readyState === \"open\") {\n this.publisher.reliableChannel.send(JSON.stringify({ clientId, dataType, data }));\n }\n break;\n default:\n this.reliableTransport(clientId, dataType, data);\n break;\n }\n }\n }\n\n broadcastData(dataType, data) {\n if (!this.publisher) {\n console.warn(\"broadcastData called without a publisher\");\n } else {\n switch (this.unreliableTransport) {\n case \"websocket\":\n if (this.ws.readyState === 1) { // OPEN\n this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }) });\n }\n break;\n case \"datachannel\":\n if (this.publisher.unreliableChannel.readyState === \"open\") {\n this.publisher.unreliableChannel.send(JSON.stringify({ dataType, data }));\n }\n break;\n default:\n this.unreliableTransport(undefined, dataType, data);\n break;\n }\n }\n }\n\n broadcastDataGuaranteed(dataType, data) {\n if (!this.publisher) {\n console.warn(\"broadcastDataGuaranteed called without a publisher\");\n } else {\n switch (this.reliableTransport) {\n case \"websocket\":\n if (this.ws.readyState === 1) { // OPEN\n this.publisher.handle.sendMessage({ kind: \"data\", body: JSON.stringify({ dataType, data }) });\n }\n break;\n case \"datachannel\":\n if (this.publisher.reliableChannel.readyState === \"open\") {\n this.publisher.reliableChannel.send(JSON.stringify({ dataType, data }));\n }\n break;\n default:\n this.reliableTransport(undefined, dataType, data);\n break;\n }\n }\n }\n\n kick(clientId, permsToken) {\n return this.publisher.handle.sendMessage({ kind: \"kick\", room_id: this.room, user_id: clientId, token: permsToken }).then(() => {\n document.body.dispatchEvent(new CustomEvent(\"kicked\", { detail: { clientId: clientId } }));\n });\n }\n\n block(clientId) {\n return this.publisher.handle.sendMessage({ kind: \"block\", whom: clientId }).then(() => {\n this.blockedClients.set(clientId, true);\n document.body.dispatchEvent(new CustomEvent(\"blocked\", { detail: { clientId: clientId } }));\n });\n }\n\n unblock(clientId) {\n return this.publisher.handle.sendMessage({ kind: \"unblock\", whom: clientId }).then(() => {\n this.blockedClients.delete(clientId);\n document.body.dispatchEvent(new CustomEvent(\"unblocked\", { detail: { clientId: clientId } }));\n });\n }\n}\n\nNAF.adapters.register(\"janus\", JanusAdapter);\n\nmodule.exports = JanusAdapter;\n","/* eslint-env browser */\n\n/**\n * This is the web browser implementation of `debug()`.\n */\n\nexports.formatArgs = formatArgs;\nexports.save = save;\nexports.load = load;\nexports.useColors = useColors;\nexports.storage = localstorage();\nexports.destroy = (() => {\n\tlet warned = false;\n\n\treturn () => {\n\t\tif (!warned) {\n\t\t\twarned = true;\n\t\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t\t}\n\t};\n})();\n\n/**\n * Colors.\n */\n\nexports.colors = [\n\t'#0000CC',\n\t'#0000FF',\n\t'#0033CC',\n\t'#0033FF',\n\t'#0066CC',\n\t'#0066FF',\n\t'#0099CC',\n\t'#0099FF',\n\t'#00CC00',\n\t'#00CC33',\n\t'#00CC66',\n\t'#00CC99',\n\t'#00CCCC',\n\t'#00CCFF',\n\t'#3300CC',\n\t'#3300FF',\n\t'#3333CC',\n\t'#3333FF',\n\t'#3366CC',\n\t'#3366FF',\n\t'#3399CC',\n\t'#3399FF',\n\t'#33CC00',\n\t'#33CC33',\n\t'#33CC66',\n\t'#33CC99',\n\t'#33CCCC',\n\t'#33CCFF',\n\t'#6600CC',\n\t'#6600FF',\n\t'#6633CC',\n\t'#6633FF',\n\t'#66CC00',\n\t'#66CC33',\n\t'#9900CC',\n\t'#9900FF',\n\t'#9933CC',\n\t'#9933FF',\n\t'#99CC00',\n\t'#99CC33',\n\t'#CC0000',\n\t'#CC0033',\n\t'#CC0066',\n\t'#CC0099',\n\t'#CC00CC',\n\t'#CC00FF',\n\t'#CC3300',\n\t'#CC3333',\n\t'#CC3366',\n\t'#CC3399',\n\t'#CC33CC',\n\t'#CC33FF',\n\t'#CC6600',\n\t'#CC6633',\n\t'#CC9900',\n\t'#CC9933',\n\t'#CCCC00',\n\t'#CCCC33',\n\t'#FF0000',\n\t'#FF0033',\n\t'#FF0066',\n\t'#FF0099',\n\t'#FF00CC',\n\t'#FF00FF',\n\t'#FF3300',\n\t'#FF3333',\n\t'#FF3366',\n\t'#FF3399',\n\t'#FF33CC',\n\t'#FF33FF',\n\t'#FF6600',\n\t'#FF6633',\n\t'#FF9900',\n\t'#FF9933',\n\t'#FFCC00',\n\t'#FFCC33'\n];\n\n/**\n * Currently only WebKit-based Web Inspectors, Firefox >= v31,\n * and the Firebug extension (any Firefox version) are known\n * to support \"%c\" CSS customizations.\n *\n * TODO: add a `localStorage` variable to explicitly enable/disable colors\n */\n\n// eslint-disable-next-line complexity\nfunction useColors() {\n\t// NB: In an Electron preload script, document will be defined but not fully\n\t// initialized. Since we know we're in Chrome, we'll just detect this case\n\t// explicitly\n\tif (typeof window !== 'undefined' && window.process && (window.process.type === 'renderer' || window.process.__nwjs)) {\n\t\treturn true;\n\t}\n\n\t// Internet Explorer and Edge do not support colors.\n\tif (typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/(edge|trident)\\/(\\d+)/)) {\n\t\treturn false;\n\t}\n\n\tlet m;\n\n\t// Is webkit? http://stackoverflow.com/a/16459606/376773\n\t// document is undefined in react-native: https://github.com/facebook/react-native/pull/1632\n\t// eslint-disable-next-line no-return-assign\n\treturn (typeof document !== 'undefined' && document.documentElement && document.documentElement.style && document.documentElement.style.WebkitAppearance) ||\n\t\t// Is firebug? http://stackoverflow.com/a/398120/376773\n\t\t(typeof window !== 'undefined' && window.console && (window.console.firebug || (window.console.exception && window.console.table))) ||\n\t\t// Is firefox >= v31?\n\t\t// https://developer.mozilla.org/en-US/docs/Tools/Web_Console#Styling_messages\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && (m = navigator.userAgent.toLowerCase().match(/firefox\\/(\\d+)/)) && parseInt(m[1], 10) >= 31) ||\n\t\t// Double check webkit in userAgent just in case we are in a worker\n\t\t(typeof navigator !== 'undefined' && navigator.userAgent && navigator.userAgent.toLowerCase().match(/applewebkit\\/(\\d+)/));\n}\n\n/**\n * Colorize log arguments if enabled.\n *\n * @api public\n */\n\nfunction formatArgs(args) {\n\targs[0] = (this.useColors ? '%c' : '') +\n\t\tthis.namespace +\n\t\t(this.useColors ? ' %c' : ' ') +\n\t\targs[0] +\n\t\t(this.useColors ? '%c ' : ' ') +\n\t\t'+' + module.exports.humanize(this.diff);\n\n\tif (!this.useColors) {\n\t\treturn;\n\t}\n\n\tconst c = 'color: ' + this.color;\n\targs.splice(1, 0, c, 'color: inherit');\n\n\t// The final \"%c\" is somewhat tricky, because there could be other\n\t// arguments passed either before or after the %c, so we need to\n\t// figure out the correct index to insert the CSS into\n\tlet index = 0;\n\tlet lastC = 0;\n\targs[0].replace(/%[a-zA-Z%]/g, match => {\n\t\tif (match === '%%') {\n\t\t\treturn;\n\t\t}\n\t\tindex++;\n\t\tif (match === '%c') {\n\t\t\t// We only are interested in the *last* %c\n\t\t\t// (the user may have provided their own)\n\t\t\tlastC = index;\n\t\t}\n\t});\n\n\targs.splice(lastC, 0, c);\n}\n\n/**\n * Invokes `console.debug()` when available.\n * No-op when `console.debug` is not a \"function\".\n * If `console.debug` is not available, falls back\n * to `console.log`.\n *\n * @api public\n */\nexports.log = console.debug || console.log || (() => {});\n\n/**\n * Save `namespaces`.\n *\n * @param {String} namespaces\n * @api private\n */\nfunction save(namespaces) {\n\ttry {\n\t\tif (namespaces) {\n\t\t\texports.storage.setItem('debug', namespaces);\n\t\t} else {\n\t\t\texports.storage.removeItem('debug');\n\t\t}\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\n/**\n * Load `namespaces`.\n *\n * @return {String} returns the previously persisted debug modes\n * @api private\n */\nfunction load() {\n\tlet r;\n\ttry {\n\t\tr = exports.storage.getItem('debug');\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n\n\t// If debug isn't set in LS, and we're in Electron, try to load $DEBUG\n\tif (!r && typeof process !== 'undefined' && 'env' in process) {\n\t\tr = process.env.DEBUG;\n\t}\n\n\treturn r;\n}\n\n/**\n * Localstorage attempts to return the localstorage.\n *\n * This is necessary because safari throws\n * when a user disables cookies/localstorage\n * and you attempt to access it.\n *\n * @return {LocalStorage}\n * @api private\n */\n\nfunction localstorage() {\n\ttry {\n\t\t// TVMLKit (Apple TV JS Runtime) does not have a window object, just localStorage in the global context\n\t\t// The Browser also has localStorage in the global context.\n\t\treturn localStorage;\n\t} catch (error) {\n\t\t// Swallow\n\t\t// XXX (@Qix-) should we be logging these?\n\t}\n}\n\nmodule.exports = require('./common')(exports);\n\nconst {formatters} = module.exports;\n\n/**\n * Map %j to `JSON.stringify()`, since no Web Inspectors do that by default.\n */\n\nformatters.j = function (v) {\n\ttry {\n\t\treturn JSON.stringify(v);\n\t} catch (error) {\n\t\treturn '[UnexpectedJSONParseError]: ' + error.message;\n\t}\n};\n","\n/**\n * This is the common logic for both the Node.js and web browser\n * implementations of `debug()`.\n */\n\nfunction setup(env) {\n\tcreateDebug.debug = createDebug;\n\tcreateDebug.default = createDebug;\n\tcreateDebug.coerce = coerce;\n\tcreateDebug.disable = disable;\n\tcreateDebug.enable = enable;\n\tcreateDebug.enabled = enabled;\n\tcreateDebug.humanize = require('ms');\n\tcreateDebug.destroy = destroy;\n\n\tObject.keys(env).forEach(key => {\n\t\tcreateDebug[key] = env[key];\n\t});\n\n\t/**\n\t* The currently active debug mode names, and names to skip.\n\t*/\n\n\tcreateDebug.names = [];\n\tcreateDebug.skips = [];\n\n\t/**\n\t* Map of special \"%n\" handling functions, for the debug \"format\" argument.\n\t*\n\t* Valid key names are a single, lower or upper-case letter, i.e. \"n\" and \"N\".\n\t*/\n\tcreateDebug.formatters = {};\n\n\t/**\n\t* Selects a color for a debug namespace\n\t* @param {String} namespace The namespace string for the debug instance to be colored\n\t* @return {Number|String} An ANSI color code for the given namespace\n\t* @api private\n\t*/\n\tfunction selectColor(namespace) {\n\t\tlet hash = 0;\n\n\t\tfor (let i = 0; i < namespace.length; i++) {\n\t\t\thash = ((hash << 5) - hash) + namespace.charCodeAt(i);\n\t\t\thash |= 0; // Convert to 32bit integer\n\t\t}\n\n\t\treturn createDebug.colors[Math.abs(hash) % createDebug.colors.length];\n\t}\n\tcreateDebug.selectColor = selectColor;\n\n\t/**\n\t* Create a debugger with the given `namespace`.\n\t*\n\t* @param {String} namespace\n\t* @return {Function}\n\t* @api public\n\t*/\n\tfunction createDebug(namespace) {\n\t\tlet prevTime;\n\t\tlet enableOverride = null;\n\t\tlet namespacesCache;\n\t\tlet enabledCache;\n\n\t\tfunction debug(...args) {\n\t\t\t// Disabled?\n\t\t\tif (!debug.enabled) {\n\t\t\t\treturn;\n\t\t\t}\n\n\t\t\tconst self = debug;\n\n\t\t\t// Set `diff` timestamp\n\t\t\tconst curr = Number(new Date());\n\t\t\tconst ms = curr - (prevTime || curr);\n\t\t\tself.diff = ms;\n\t\t\tself.prev = prevTime;\n\t\t\tself.curr = curr;\n\t\t\tprevTime = curr;\n\n\t\t\targs[0] = createDebug.coerce(args[0]);\n\n\t\t\tif (typeof args[0] !== 'string') {\n\t\t\t\t// Anything else let's inspect with %O\n\t\t\t\targs.unshift('%O');\n\t\t\t}\n\n\t\t\t// Apply any `formatters` transformations\n\t\t\tlet index = 0;\n\t\t\targs[0] = args[0].replace(/%([a-zA-Z%])/g, (match, format) => {\n\t\t\t\t// If we encounter an escaped % then don't increase the array index\n\t\t\t\tif (match === '%%') {\n\t\t\t\t\treturn '%';\n\t\t\t\t}\n\t\t\t\tindex++;\n\t\t\t\tconst formatter = createDebug.formatters[format];\n\t\t\t\tif (typeof formatter === 'function') {\n\t\t\t\t\tconst val = args[index];\n\t\t\t\t\tmatch = formatter.call(self, val);\n\n\t\t\t\t\t// Now we need to remove `args[index]` since it's inlined in the `format`\n\t\t\t\t\targs.splice(index, 1);\n\t\t\t\t\tindex--;\n\t\t\t\t}\n\t\t\t\treturn match;\n\t\t\t});\n\n\t\t\t// Apply env-specific formatting (colors, etc.)\n\t\t\tcreateDebug.formatArgs.call(self, args);\n\n\t\t\tconst logFn = self.log || createDebug.log;\n\t\t\tlogFn.apply(self, args);\n\t\t}\n\n\t\tdebug.namespace = namespace;\n\t\tdebug.useColors = createDebug.useColors();\n\t\tdebug.color = createDebug.selectColor(namespace);\n\t\tdebug.extend = extend;\n\t\tdebug.destroy = createDebug.destroy; // XXX Temporary. Will be removed in the next major release.\n\n\t\tObject.defineProperty(debug, 'enabled', {\n\t\t\tenumerable: true,\n\t\t\tconfigurable: false,\n\t\t\tget: () => {\n\t\t\t\tif (enableOverride !== null) {\n\t\t\t\t\treturn enableOverride;\n\t\t\t\t}\n\t\t\t\tif (namespacesCache !== createDebug.namespaces) {\n\t\t\t\t\tnamespacesCache = createDebug.namespaces;\n\t\t\t\t\tenabledCache = createDebug.enabled(namespace);\n\t\t\t\t}\n\n\t\t\t\treturn enabledCache;\n\t\t\t},\n\t\t\tset: v => {\n\t\t\t\tenableOverride = v;\n\t\t\t}\n\t\t});\n\n\t\t// Env-specific initialization logic for debug instances\n\t\tif (typeof createDebug.init === 'function') {\n\t\t\tcreateDebug.init(debug);\n\t\t}\n\n\t\treturn debug;\n\t}\n\n\tfunction extend(namespace, delimiter) {\n\t\tconst newDebug = createDebug(this.namespace + (typeof delimiter === 'undefined' ? ':' : delimiter) + namespace);\n\t\tnewDebug.log = this.log;\n\t\treturn newDebug;\n\t}\n\n\t/**\n\t* Enables a debug mode by namespaces. This can include modes\n\t* separated by a colon and wildcards.\n\t*\n\t* @param {String} namespaces\n\t* @api public\n\t*/\n\tfunction enable(namespaces) {\n\t\tcreateDebug.save(namespaces);\n\t\tcreateDebug.namespaces = namespaces;\n\n\t\tcreateDebug.names = [];\n\t\tcreateDebug.skips = [];\n\n\t\tconst split = (typeof namespaces === 'string' ? namespaces : '')\n\t\t\t.trim()\n\t\t\t.replace(' ', ',')\n\t\t\t.split(',')\n\t\t\t.filter(Boolean);\n\n\t\tfor (const ns of split) {\n\t\t\tif (ns[0] === '-') {\n\t\t\t\tcreateDebug.skips.push(ns.slice(1));\n\t\t\t} else {\n\t\t\t\tcreateDebug.names.push(ns);\n\t\t\t}\n\t\t}\n\t}\n\n\t/**\n\t * Checks if the given string matches a namespace template, honoring\n\t * asterisks as wildcards.\n\t *\n\t * @param {String} search\n\t * @param {String} template\n\t * @return {Boolean}\n\t */\n\tfunction matchesTemplate(search, template) {\n\t\tlet searchIndex = 0;\n\t\tlet templateIndex = 0;\n\t\tlet starIndex = -1;\n\t\tlet matchIndex = 0;\n\n\t\twhile (searchIndex < search.length) {\n\t\t\tif (templateIndex < template.length && (template[templateIndex] === search[searchIndex] || template[templateIndex] === '*')) {\n\t\t\t\t// Match character or proceed with wildcard\n\t\t\t\tif (template[templateIndex] === '*') {\n\t\t\t\t\tstarIndex = templateIndex;\n\t\t\t\t\tmatchIndex = searchIndex;\n\t\t\t\t\ttemplateIndex++; // Skip the '*'\n\t\t\t\t} else {\n\t\t\t\t\tsearchIndex++;\n\t\t\t\t\ttemplateIndex++;\n\t\t\t\t}\n\t\t\t} else if (starIndex !== -1) { // eslint-disable-line no-negated-condition\n\t\t\t\t// Backtrack to the last '*' and try to match more characters\n\t\t\t\ttemplateIndex = starIndex + 1;\n\t\t\t\tmatchIndex++;\n\t\t\t\tsearchIndex = matchIndex;\n\t\t\t} else {\n\t\t\t\treturn false; // No match\n\t\t\t}\n\t\t}\n\n\t\t// Handle trailing '*' in template\n\t\twhile (templateIndex < template.length && template[templateIndex] === '*') {\n\t\t\ttemplateIndex++;\n\t\t}\n\n\t\treturn templateIndex === template.length;\n\t}\n\n\t/**\n\t* Disable debug output.\n\t*\n\t* @return {String} namespaces\n\t* @api public\n\t*/\n\tfunction disable() {\n\t\tconst namespaces = [\n\t\t\t...createDebug.names,\n\t\t\t...createDebug.skips.map(namespace => '-' + namespace)\n\t\t].join(',');\n\t\tcreateDebug.enable('');\n\t\treturn namespaces;\n\t}\n\n\t/**\n\t* Returns true if the given mode name is enabled, false otherwise.\n\t*\n\t* @param {String} name\n\t* @return {Boolean}\n\t* @api public\n\t*/\n\tfunction enabled(name) {\n\t\tfor (const skip of createDebug.skips) {\n\t\t\tif (matchesTemplate(name, skip)) {\n\t\t\t\treturn false;\n\t\t\t}\n\t\t}\n\n\t\tfor (const ns of createDebug.names) {\n\t\t\tif (matchesTemplate(name, ns)) {\n\t\t\t\treturn true;\n\t\t\t}\n\t\t}\n\n\t\treturn false;\n\t}\n\n\t/**\n\t* Coerce `val`.\n\t*\n\t* @param {Mixed} val\n\t* @return {Mixed}\n\t* @api private\n\t*/\n\tfunction coerce(val) {\n\t\tif (val instanceof Error) {\n\t\t\treturn val.stack || val.message;\n\t\t}\n\t\treturn val;\n\t}\n\n\t/**\n\t* XXX DO NOT USE. This is a temporary stub function.\n\t* XXX It WILL be removed in the next major release.\n\t*/\n\tfunction destroy() {\n\t\tconsole.warn('Instance method `debug.destroy()` is deprecated and no longer does anything. It will be removed in the next major version of `debug`.');\n\t}\n\n\tcreateDebug.enable(createDebug.load());\n\n\treturn createDebug;\n}\n\nmodule.exports = setup;\n","/**\n * Helpers.\n */\n\nvar s = 1000;\nvar m = s * 60;\nvar h = m * 60;\nvar d = h * 24;\nvar w = d * 7;\nvar y = d * 365.25;\n\n/**\n * Parse or format the given `val`.\n *\n * Options:\n *\n * - `long` verbose formatting [false]\n *\n * @param {String|Number} val\n * @param {Object} [options]\n * @throws {Error} throw an error if val is not a non-empty string or a number\n * @return {String|Number}\n * @api public\n */\n\nmodule.exports = function (val, options) {\n options = options || {};\n var type = typeof val;\n if (type === 'string' && val.length > 0) {\n return parse(val);\n } else if (type === 'number' && isFinite(val)) {\n return options.long ? fmtLong(val) : fmtShort(val);\n }\n throw new Error(\n 'val is not a non-empty string or a valid number. val=' +\n JSON.stringify(val)\n );\n};\n\n/**\n * Parse the given `str` and return milliseconds.\n *\n * @param {String} str\n * @return {Number}\n * @api private\n */\n\nfunction parse(str) {\n str = String(str);\n if (str.length > 100) {\n return;\n }\n var match = /^(-?(?:\\d+)?\\.?\\d+) *(milliseconds?|msecs?|ms|seconds?|secs?|s|minutes?|mins?|m|hours?|hrs?|h|days?|d|weeks?|w|years?|yrs?|y)?$/i.exec(\n str\n );\n if (!match) {\n return;\n }\n var n = parseFloat(match[1]);\n var type = (match[2] || 'ms').toLowerCase();\n switch (type) {\n case 'years':\n case 'year':\n case 'yrs':\n case 'yr':\n case 'y':\n return n * y;\n case 'weeks':\n case 'week':\n case 'w':\n return n * w;\n case 'days':\n case 'day':\n case 'd':\n return n * d;\n case 'hours':\n case 'hour':\n case 'hrs':\n case 'hr':\n case 'h':\n return n * h;\n case 'minutes':\n case 'minute':\n case 'mins':\n case 'min':\n case 'm':\n return n * m;\n case 'seconds':\n case 'second':\n case 'secs':\n case 'sec':\n case 's':\n return n * s;\n case 'milliseconds':\n case 'millisecond':\n case 'msecs':\n case 'msec':\n case 'ms':\n return n;\n default:\n return undefined;\n }\n}\n\n/**\n * Short format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtShort(ms) {\n var msAbs = Math.abs(ms);\n if (msAbs >= d) {\n return Math.round(ms / d) + 'd';\n }\n if (msAbs >= h) {\n return Math.round(ms / h) + 'h';\n }\n if (msAbs >= m) {\n return Math.round(ms / m) + 'm';\n }\n if (msAbs >= s) {\n return Math.round(ms / s) + 's';\n }\n return ms + 'ms';\n}\n\n/**\n * Long format for `ms`.\n *\n * @param {Number} ms\n * @return {String}\n * @api private\n */\n\nfunction fmtLong(ms) {\n var msAbs = Math.abs(ms);\n if (msAbs >= d) {\n return plural(ms, msAbs, d, 'day');\n }\n if (msAbs >= h) {\n return plural(ms, msAbs, h, 'hour');\n }\n if (msAbs >= m) {\n return plural(ms, msAbs, m, 'minute');\n }\n if (msAbs >= s) {\n return plural(ms, msAbs, s, 'second');\n }\n return ms + ' ms';\n}\n\n/**\n * Pluralization helper.\n */\n\nfunction plural(ms, msAbs, n, name) {\n var isPlural = msAbs >= n * 1.5;\n return Math.round(ms / n) + ' ' + name + (isPlural ? 's' : '');\n}\n","/* eslint-env node */\n'use strict';\n\n// SDP helpers.\nconst SDPUtils = {};\n\n// Generate an alphanumeric identifier for cname or mids.\n// TODO: use UUIDs instead? https://gist.github.com/jed/982883\nSDPUtils.generateIdentifier = function() {\n return Math.random().toString(36).substring(2, 12);\n};\n\n// The RTCP CNAME used by all peerconnections from the same JS.\nSDPUtils.localCName = SDPUtils.generateIdentifier();\n\n// Splits SDP into lines, dealing with both CRLF and LF.\nSDPUtils.splitLines = function(blob) {\n return blob.trim().split('\\n').map(line => line.trim());\n};\n// Splits SDP into sessionpart and mediasections. Ensures CRLF.\nSDPUtils.splitSections = function(blob) {\n const parts = blob.split('\\nm=');\n return parts.map((part, index) => (index > 0 ?\n 'm=' + part : part).trim() + '\\r\\n');\n};\n\n// Returns the session description.\nSDPUtils.getDescription = function(blob) {\n const sections = SDPUtils.splitSections(blob);\n return sections && sections[0];\n};\n\n// Returns the individual media sections.\nSDPUtils.getMediaSections = function(blob) {\n const sections = SDPUtils.splitSections(blob);\n sections.shift();\n return sections;\n};\n\n// Returns lines that start with a certain prefix.\nSDPUtils.matchPrefix = function(blob, prefix) {\n return SDPUtils.splitLines(blob).filter(line => line.indexOf(prefix) === 0);\n};\n\n// Parses an ICE candidate line. Sample input:\n// candidate:702786350 2 udp 41819902 8.8.8.8 60769 typ relay raddr 8.8.8.8\n// rport 55996\"\n// Input can be prefixed with a=.\nSDPUtils.parseCandidate = function(line) {\n let parts;\n // Parse both variants.\n if (line.indexOf('a=candidate:') === 0) {\n parts = line.substring(12).split(' ');\n } else {\n parts = line.substring(10).split(' ');\n }\n\n const candidate = {\n foundation: parts[0],\n component: {1: 'rtp', 2: 'rtcp'}[parts[1]] || parts[1],\n protocol: parts[2].toLowerCase(),\n priority: parseInt(parts[3], 10),\n ip: parts[4],\n address: parts[4], // address is an alias for ip.\n port: parseInt(parts[5], 10),\n // skip parts[6] == 'typ'\n type: parts[7],\n };\n\n for (let i = 8; i < parts.length; i += 2) {\n switch (parts[i]) {\n case 'raddr':\n candidate.relatedAddress = parts[i + 1];\n break;\n case 'rport':\n candidate.relatedPort = parseInt(parts[i + 1], 10);\n break;\n case 'tcptype':\n candidate.tcpType = parts[i + 1];\n break;\n case 'ufrag':\n candidate.ufrag = parts[i + 1]; // for backward compatibility.\n candidate.usernameFragment = parts[i + 1];\n break;\n default: // extension handling, in particular ufrag. Don't overwrite.\n if (candidate[parts[i]] === undefined) {\n candidate[parts[i]] = parts[i + 1];\n }\n break;\n }\n }\n return candidate;\n};\n\n// Translates a candidate object into SDP candidate attribute.\n// This does not include the a= prefix!\nSDPUtils.writeCandidate = function(candidate) {\n const sdp = [];\n sdp.push(candidate.foundation);\n\n const component = candidate.component;\n if (component === 'rtp') {\n sdp.push(1);\n } else if (component === 'rtcp') {\n sdp.push(2);\n } else {\n sdp.push(component);\n }\n sdp.push(candidate.protocol.toUpperCase());\n sdp.push(candidate.priority);\n sdp.push(candidate.address || candidate.ip);\n sdp.push(candidate.port);\n\n const type = candidate.type;\n sdp.push('typ');\n sdp.push(type);\n if (type !== 'host' && candidate.relatedAddress &&\n candidate.relatedPort) {\n sdp.push('raddr');\n sdp.push(candidate.relatedAddress);\n sdp.push('rport');\n sdp.push(candidate.relatedPort);\n }\n if (candidate.tcpType && candidate.protocol.toLowerCase() === 'tcp') {\n sdp.push('tcptype');\n sdp.push(candidate.tcpType);\n }\n if (candidate.usernameFragment || candidate.ufrag) {\n sdp.push('ufrag');\n sdp.push(candidate.usernameFragment || candidate.ufrag);\n }\n return 'candidate:' + sdp.join(' ');\n};\n\n// Parses an ice-options line, returns an array of option tags.\n// Sample input:\n// a=ice-options:foo bar\nSDPUtils.parseIceOptions = function(line) {\n return line.substring(14).split(' ');\n};\n\n// Parses a rtpmap line, returns RTCRtpCoddecParameters. Sample input:\n// a=rtpmap:111 opus/48000/2\nSDPUtils.parseRtpMap = function(line) {\n let parts = line.substring(9).split(' ');\n const parsed = {\n payloadType: parseInt(parts.shift(), 10), // was: id\n };\n\n parts = parts[0].split('/');\n\n parsed.name = parts[0];\n parsed.clockRate = parseInt(parts[1], 10); // was: clockrate\n parsed.channels = parts.length === 3 ? parseInt(parts[2], 10) : 1;\n // legacy alias, got renamed back to channels in ORTC.\n parsed.numChannels = parsed.channels;\n return parsed;\n};\n\n// Generates a rtpmap line from RTCRtpCodecCapability or\n// RTCRtpCodecParameters.\nSDPUtils.writeRtpMap = function(codec) {\n let pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n const channels = codec.channels || codec.numChannels || 1;\n return 'a=rtpmap:' + pt + ' ' + codec.name + '/' + codec.clockRate +\n (channels !== 1 ? '/' + channels : '') + '\\r\\n';\n};\n\n// Parses a extmap line (headerextension from RFC 5285). Sample input:\n// a=extmap:2 urn:ietf:params:rtp-hdrext:toffset\n// a=extmap:2/sendonly urn:ietf:params:rtp-hdrext:toffset\nSDPUtils.parseExtmap = function(line) {\n const parts = line.substring(9).split(' ');\n return {\n id: parseInt(parts[0], 10),\n direction: parts[0].indexOf('/') > 0 ? parts[0].split('/')[1] : 'sendrecv',\n uri: parts[1],\n attributes: parts.slice(2).join(' '),\n };\n};\n\n// Generates an extmap line from RTCRtpHeaderExtensionParameters or\n// RTCRtpHeaderExtension.\nSDPUtils.writeExtmap = function(headerExtension) {\n return 'a=extmap:' + (headerExtension.id || headerExtension.preferredId) +\n (headerExtension.direction && headerExtension.direction !== 'sendrecv'\n ? '/' + headerExtension.direction\n : '') +\n ' ' + headerExtension.uri +\n (headerExtension.attributes ? ' ' + headerExtension.attributes : '') +\n '\\r\\n';\n};\n\n// Parses a fmtp line, returns dictionary. Sample input:\n// a=fmtp:96 vbr=on;cng=on\n// Also deals with vbr=on; cng=on\nSDPUtils.parseFmtp = function(line) {\n const parsed = {};\n let kv;\n const parts = line.substring(line.indexOf(' ') + 1).split(';');\n for (let j = 0; j < parts.length; j++) {\n kv = parts[j].trim().split('=');\n parsed[kv[0].trim()] = kv[1];\n }\n return parsed;\n};\n\n// Generates a fmtp line from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeFmtp = function(codec) {\n let line = '';\n let pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.parameters && Object.keys(codec.parameters).length) {\n const params = [];\n Object.keys(codec.parameters).forEach(param => {\n if (codec.parameters[param] !== undefined) {\n params.push(param + '=' + codec.parameters[param]);\n } else {\n params.push(param);\n }\n });\n line += 'a=fmtp:' + pt + ' ' + params.join(';') + '\\r\\n';\n }\n return line;\n};\n\n// Parses a rtcp-fb line, returns RTCPRtcpFeedback object. Sample input:\n// a=rtcp-fb:98 nack rpsi\nSDPUtils.parseRtcpFb = function(line) {\n const parts = line.substring(line.indexOf(' ') + 1).split(' ');\n return {\n type: parts.shift(),\n parameter: parts.join(' '),\n };\n};\n\n// Generate a=rtcp-fb lines from RTCRtpCodecCapability or RTCRtpCodecParameters.\nSDPUtils.writeRtcpFb = function(codec) {\n let lines = '';\n let pt = codec.payloadType;\n if (codec.preferredPayloadType !== undefined) {\n pt = codec.preferredPayloadType;\n }\n if (codec.rtcpFeedback && codec.rtcpFeedback.length) {\n // FIXME: special handling for trr-int?\n codec.rtcpFeedback.forEach(fb => {\n lines += 'a=rtcp-fb:' + pt + ' ' + fb.type +\n (fb.parameter && fb.parameter.length ? ' ' + fb.parameter : '') +\n '\\r\\n';\n });\n }\n return lines;\n};\n\n// Parses a RFC 5576 ssrc media attribute. Sample input:\n// a=ssrc:3735928559 cname:something\nSDPUtils.parseSsrcMedia = function(line) {\n const sp = line.indexOf(' ');\n const parts = {\n ssrc: parseInt(line.substring(7, sp), 10),\n };\n const colon = line.indexOf(':', sp);\n if (colon > -1) {\n parts.attribute = line.substring(sp + 1, colon);\n parts.value = line.substring(colon + 1);\n } else {\n parts.attribute = line.substring(sp + 1);\n }\n return parts;\n};\n\n// Parse a ssrc-group line (see RFC 5576). Sample input:\n// a=ssrc-group:semantics 12 34\nSDPUtils.parseSsrcGroup = function(line) {\n const parts = line.substring(13).split(' ');\n return {\n semantics: parts.shift(),\n ssrcs: parts.map(ssrc => parseInt(ssrc, 10)),\n };\n};\n\n// Extracts the MID (RFC 5888) from a media section.\n// Returns the MID or undefined if no mid line was found.\nSDPUtils.getMid = function(mediaSection) {\n const mid = SDPUtils.matchPrefix(mediaSection, 'a=mid:')[0];\n if (mid) {\n return mid.substring(6);\n }\n};\n\n// Parses a fingerprint line for DTLS-SRTP.\nSDPUtils.parseFingerprint = function(line) {\n const parts = line.substring(14).split(' ');\n return {\n algorithm: parts[0].toLowerCase(), // algorithm is case-sensitive in Edge.\n value: parts[1].toUpperCase(), // the definition is upper-case in RFC 4572.\n };\n};\n\n// Extracts DTLS parameters from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the fingerprint line as input. See also getIceParameters.\nSDPUtils.getDtlsParameters = function(mediaSection, sessionpart) {\n const lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=fingerprint:');\n // Note: a=setup line is ignored since we use the 'auto' role in Edge.\n return {\n role: 'auto',\n fingerprints: lines.map(SDPUtils.parseFingerprint),\n };\n};\n\n// Serializes DTLS parameters to SDP.\nSDPUtils.writeDtlsParameters = function(params, setupType) {\n let sdp = 'a=setup:' + setupType + '\\r\\n';\n params.fingerprints.forEach(fp => {\n sdp += 'a=fingerprint:' + fp.algorithm + ' ' + fp.value + '\\r\\n';\n });\n return sdp;\n};\n\n// Parses a=crypto lines into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#dictionary-rtcsrtpsdesparameters-members\nSDPUtils.parseCryptoLine = function(line) {\n const parts = line.substring(9).split(' ');\n return {\n tag: parseInt(parts[0], 10),\n cryptoSuite: parts[1],\n keyParams: parts[2],\n sessionParams: parts.slice(3),\n };\n};\n\nSDPUtils.writeCryptoLine = function(parameters) {\n return 'a=crypto:' + parameters.tag + ' ' +\n parameters.cryptoSuite + ' ' +\n (typeof parameters.keyParams === 'object'\n ? SDPUtils.writeCryptoKeyParams(parameters.keyParams)\n : parameters.keyParams) +\n (parameters.sessionParams ? ' ' + parameters.sessionParams.join(' ') : '') +\n '\\r\\n';\n};\n\n// Parses the crypto key parameters into\n// https://rawgit.com/aboba/edgertc/master/msortc-rs4.html#rtcsrtpkeyparam*\nSDPUtils.parseCryptoKeyParams = function(keyParams) {\n if (keyParams.indexOf('inline:') !== 0) {\n return null;\n }\n const parts = keyParams.substring(7).split('|');\n return {\n keyMethod: 'inline',\n keySalt: parts[0],\n lifeTime: parts[1],\n mkiValue: parts[2] ? parts[2].split(':')[0] : undefined,\n mkiLength: parts[2] ? parts[2].split(':')[1] : undefined,\n };\n};\n\nSDPUtils.writeCryptoKeyParams = function(keyParams) {\n return keyParams.keyMethod + ':'\n + keyParams.keySalt +\n (keyParams.lifeTime ? '|' + keyParams.lifeTime : '') +\n (keyParams.mkiValue && keyParams.mkiLength\n ? '|' + keyParams.mkiValue + ':' + keyParams.mkiLength\n : '');\n};\n\n// Extracts all SDES parameters.\nSDPUtils.getCryptoParameters = function(mediaSection, sessionpart) {\n const lines = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=crypto:');\n return lines.map(SDPUtils.parseCryptoLine);\n};\n\n// Parses ICE information from SDP media section or sessionpart.\n// FIXME: for consistency with other functions this should only\n// get the ice-ufrag and ice-pwd lines as input.\nSDPUtils.getIceParameters = function(mediaSection, sessionpart) {\n const ufrag = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-ufrag:')[0];\n const pwd = SDPUtils.matchPrefix(mediaSection + sessionpart,\n 'a=ice-pwd:')[0];\n if (!(ufrag && pwd)) {\n return null;\n }\n return {\n usernameFragment: ufrag.substring(12),\n password: pwd.substring(10),\n };\n};\n\n// Serializes ICE parameters to SDP.\nSDPUtils.writeIceParameters = function(params) {\n let sdp = 'a=ice-ufrag:' + params.usernameFragment + '\\r\\n' +\n 'a=ice-pwd:' + params.password + '\\r\\n';\n if (params.iceLite) {\n sdp += 'a=ice-lite\\r\\n';\n }\n return sdp;\n};\n\n// Parses the SDP media section and returns RTCRtpParameters.\nSDPUtils.parseRtpParameters = function(mediaSection) {\n const description = {\n codecs: [],\n headerExtensions: [],\n fecMechanisms: [],\n rtcp: [],\n };\n const lines = SDPUtils.splitLines(mediaSection);\n const mline = lines[0].split(' ');\n description.profile = mline[2];\n for (let i = 3; i < mline.length; i++) { // find all codecs from mline[3..]\n const pt = mline[i];\n const rtpmapline = SDPUtils.matchPrefix(\n mediaSection, 'a=rtpmap:' + pt + ' ')[0];\n if (rtpmapline) {\n const codec = SDPUtils.parseRtpMap(rtpmapline);\n const fmtps = SDPUtils.matchPrefix(\n mediaSection, 'a=fmtp:' + pt + ' ');\n // Only the first a=fmtp: is considered.\n codec.parameters = fmtps.length ? SDPUtils.parseFmtp(fmtps[0]) : {};\n codec.rtcpFeedback = SDPUtils.matchPrefix(\n mediaSection, 'a=rtcp-fb:' + pt + ' ')\n .map(SDPUtils.parseRtcpFb);\n description.codecs.push(codec);\n // parse FEC mechanisms from rtpmap lines.\n switch (codec.name.toUpperCase()) {\n case 'RED':\n case 'ULPFEC':\n description.fecMechanisms.push(codec.name.toUpperCase());\n break;\n default: // only RED and ULPFEC are recognized as FEC mechanisms.\n break;\n }\n }\n }\n SDPUtils.matchPrefix(mediaSection, 'a=extmap:').forEach(line => {\n description.headerExtensions.push(SDPUtils.parseExtmap(line));\n });\n const wildcardRtcpFb = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-fb:* ')\n .map(SDPUtils.parseRtcpFb);\n description.codecs.forEach(codec => {\n wildcardRtcpFb.forEach(fb=> {\n const duplicate = codec.rtcpFeedback.find(existingFeedback => {\n return existingFeedback.type === fb.type &&\n existingFeedback.parameter === fb.parameter;\n });\n if (!duplicate) {\n codec.rtcpFeedback.push(fb);\n }\n });\n });\n // FIXME: parse rtcp.\n return description;\n};\n\n// Generates parts of the SDP media section describing the capabilities /\n// parameters.\nSDPUtils.writeRtpDescription = function(kind, caps) {\n let sdp = '';\n\n // Build the mline.\n sdp += 'm=' + kind + ' ';\n sdp += caps.codecs.length > 0 ? '9' : '0'; // reject if no codecs.\n sdp += ' ' + (caps.profile || 'UDP/TLS/RTP/SAVPF') + ' ';\n sdp += caps.codecs.map(codec => {\n if (codec.preferredPayloadType !== undefined) {\n return codec.preferredPayloadType;\n }\n return codec.payloadType;\n }).join(' ') + '\\r\\n';\n\n sdp += 'c=IN IP4 0.0.0.0\\r\\n';\n sdp += 'a=rtcp:9 IN IP4 0.0.0.0\\r\\n';\n\n // Add a=rtpmap lines for each codec. Also fmtp and rtcp-fb.\n caps.codecs.forEach(codec => {\n sdp += SDPUtils.writeRtpMap(codec);\n sdp += SDPUtils.writeFmtp(codec);\n sdp += SDPUtils.writeRtcpFb(codec);\n });\n let maxptime = 0;\n caps.codecs.forEach(codec => {\n if (codec.maxptime > maxptime) {\n maxptime = codec.maxptime;\n }\n });\n if (maxptime > 0) {\n sdp += 'a=maxptime:' + maxptime + '\\r\\n';\n }\n\n if (caps.headerExtensions) {\n caps.headerExtensions.forEach(extension => {\n sdp += SDPUtils.writeExtmap(extension);\n });\n }\n // FIXME: write fecMechanisms.\n return sdp;\n};\n\n// Parses the SDP media section and returns an array of\n// RTCRtpEncodingParameters.\nSDPUtils.parseRtpEncodingParameters = function(mediaSection) {\n const encodingParameters = [];\n const description = SDPUtils.parseRtpParameters(mediaSection);\n const hasRed = description.fecMechanisms.indexOf('RED') !== -1;\n const hasUlpfec = description.fecMechanisms.indexOf('ULPFEC') !== -1;\n\n // filter a=ssrc:... cname:, ignore PlanB-msid\n const ssrcs = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(line => SDPUtils.parseSsrcMedia(line))\n .filter(parts => parts.attribute === 'cname');\n const primarySsrc = ssrcs.length > 0 && ssrcs[0].ssrc;\n let secondarySsrc;\n\n const flows = SDPUtils.matchPrefix(mediaSection, 'a=ssrc-group:FID')\n .map(line => {\n const parts = line.substring(17).split(' ');\n return parts.map(part => parseInt(part, 10));\n });\n if (flows.length > 0 && flows[0].length > 1 && flows[0][0] === primarySsrc) {\n secondarySsrc = flows[0][1];\n }\n\n description.codecs.forEach(codec => {\n if (codec.name.toUpperCase() === 'RTX' && codec.parameters.apt) {\n let encParam = {\n ssrc: primarySsrc,\n codecPayloadType: parseInt(codec.parameters.apt, 10),\n };\n if (primarySsrc && secondarySsrc) {\n encParam.rtx = {ssrc: secondarySsrc};\n }\n encodingParameters.push(encParam);\n if (hasRed) {\n encParam = JSON.parse(JSON.stringify(encParam));\n encParam.fec = {\n ssrc: primarySsrc,\n mechanism: hasUlpfec ? 'red+ulpfec' : 'red',\n };\n encodingParameters.push(encParam);\n }\n }\n });\n if (encodingParameters.length === 0 && primarySsrc) {\n encodingParameters.push({\n ssrc: primarySsrc,\n });\n }\n\n // we support both b=AS and b=TIAS but interpret AS as TIAS.\n let bandwidth = SDPUtils.matchPrefix(mediaSection, 'b=');\n if (bandwidth.length) {\n if (bandwidth[0].indexOf('b=TIAS:') === 0) {\n bandwidth = parseInt(bandwidth[0].substring(7), 10);\n } else if (bandwidth[0].indexOf('b=AS:') === 0) {\n // use formula from JSEP to convert b=AS to TIAS value.\n bandwidth = parseInt(bandwidth[0].substring(5), 10) * 1000 * 0.95\n - (50 * 40 * 8);\n } else {\n bandwidth = undefined;\n }\n encodingParameters.forEach(params => {\n params.maxBitrate = bandwidth;\n });\n }\n return encodingParameters;\n};\n\n// parses http://draft.ortc.org/#rtcrtcpparameters*\nSDPUtils.parseRtcpParameters = function(mediaSection) {\n const rtcpParameters = {};\n\n // Gets the first SSRC. Note that with RTX there might be multiple\n // SSRCs.\n const remoteSsrc = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(line => SDPUtils.parseSsrcMedia(line))\n .filter(obj => obj.attribute === 'cname')[0];\n if (remoteSsrc) {\n rtcpParameters.cname = remoteSsrc.value;\n rtcpParameters.ssrc = remoteSsrc.ssrc;\n }\n\n // Edge uses the compound attribute instead of reducedSize\n // compound is !reducedSize\n const rsize = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-rsize');\n rtcpParameters.reducedSize = rsize.length > 0;\n rtcpParameters.compound = rsize.length === 0;\n\n // parses the rtcp-mux attrŅ–bute.\n // Note that Edge does not support unmuxed RTCP.\n const mux = SDPUtils.matchPrefix(mediaSection, 'a=rtcp-mux');\n rtcpParameters.mux = mux.length > 0;\n\n return rtcpParameters;\n};\n\nSDPUtils.writeRtcpParameters = function(rtcpParameters) {\n let sdp = '';\n if (rtcpParameters.reducedSize) {\n sdp += 'a=rtcp-rsize\\r\\n';\n }\n if (rtcpParameters.mux) {\n sdp += 'a=rtcp-mux\\r\\n';\n }\n if (rtcpParameters.ssrc !== undefined && rtcpParameters.cname) {\n sdp += 'a=ssrc:' + rtcpParameters.ssrc +\n ' cname:' + rtcpParameters.cname + '\\r\\n';\n }\n return sdp;\n};\n\n\n// parses either a=msid: or a=ssrc:... msid lines and returns\n// the id of the MediaStream and MediaStreamTrack.\nSDPUtils.parseMsid = function(mediaSection) {\n let parts;\n const spec = SDPUtils.matchPrefix(mediaSection, 'a=msid:');\n if (spec.length === 1) {\n parts = spec[0].substring(7).split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n const planB = SDPUtils.matchPrefix(mediaSection, 'a=ssrc:')\n .map(line => SDPUtils.parseSsrcMedia(line))\n .filter(msidParts => msidParts.attribute === 'msid');\n if (planB.length > 0) {\n parts = planB[0].value.split(' ');\n return {stream: parts[0], track: parts[1]};\n }\n};\n\n// SCTP\n// parses draft-ietf-mmusic-sctp-sdp-26 first and falls back\n// to draft-ietf-mmusic-sctp-sdp-05\nSDPUtils.parseSctpDescription = function(mediaSection) {\n const mline = SDPUtils.parseMLine(mediaSection);\n const maxSizeLine = SDPUtils.matchPrefix(mediaSection, 'a=max-message-size:');\n let maxMessageSize;\n if (maxSizeLine.length > 0) {\n maxMessageSize = parseInt(maxSizeLine[0].substring(19), 10);\n }\n if (isNaN(maxMessageSize)) {\n maxMessageSize = 65536;\n }\n const sctpPort = SDPUtils.matchPrefix(mediaSection, 'a=sctp-port:');\n if (sctpPort.length > 0) {\n return {\n port: parseInt(sctpPort[0].substring(12), 10),\n protocol: mline.fmt,\n maxMessageSize,\n };\n }\n const sctpMapLines = SDPUtils.matchPrefix(mediaSection, 'a=sctpmap:');\n if (sctpMapLines.length > 0) {\n const parts = sctpMapLines[0]\n .substring(10)\n .split(' ');\n return {\n port: parseInt(parts[0], 10),\n protocol: parts[1],\n maxMessageSize,\n };\n }\n};\n\n// SCTP\n// outputs the draft-ietf-mmusic-sctp-sdp-26 version that all browsers\n// support by now receiving in this format, unless we originally parsed\n// as the draft-ietf-mmusic-sctp-sdp-05 format (indicated by the m-line\n// protocol of DTLS/SCTP -- without UDP/ or TCP/)\nSDPUtils.writeSctpDescription = function(media, sctp) {\n let output = [];\n if (media.protocol !== 'DTLS/SCTP') {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.protocol + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctp-port:' + sctp.port + '\\r\\n',\n ];\n } else {\n output = [\n 'm=' + media.kind + ' 9 ' + media.protocol + ' ' + sctp.port + '\\r\\n',\n 'c=IN IP4 0.0.0.0\\r\\n',\n 'a=sctpmap:' + sctp.port + ' ' + sctp.protocol + ' 65535\\r\\n',\n ];\n }\n if (sctp.maxMessageSize !== undefined) {\n output.push('a=max-message-size:' + sctp.maxMessageSize + '\\r\\n');\n }\n return output.join('');\n};\n\n// Generate a session ID for SDP.\n// https://tools.ietf.org/html/draft-ietf-rtcweb-jsep-20#section-5.2.1\n// recommends using a cryptographically random +ve 64-bit value\n// but right now this should be acceptable and within the right range\nSDPUtils.generateSessionId = function() {\n return Math.random().toString().substr(2, 22);\n};\n\n// Write boiler plate for start of SDP\n// sessId argument is optional - if not supplied it will\n// be generated randomly\n// sessVersion is optional and defaults to 2\n// sessUser is optional and defaults to 'thisisadapterortc'\nSDPUtils.writeSessionBoilerplate = function(sessId, sessVer, sessUser) {\n let sessionId;\n const version = sessVer !== undefined ? sessVer : 2;\n if (sessId) {\n sessionId = sessId;\n } else {\n sessionId = SDPUtils.generateSessionId();\n }\n const user = sessUser || 'thisisadapterortc';\n // FIXME: sess-id should be an NTP timestamp.\n return 'v=0\\r\\n' +\n 'o=' + user + ' ' + sessionId + ' ' + version +\n ' IN IP4 127.0.0.1\\r\\n' +\n 's=-\\r\\n' +\n 't=0 0\\r\\n';\n};\n\n// Gets the direction from the mediaSection or the sessionpart.\nSDPUtils.getDirection = function(mediaSection, sessionpart) {\n // Look for sendrecv, sendonly, recvonly, inactive, default to sendrecv.\n const lines = SDPUtils.splitLines(mediaSection);\n for (let i = 0; i < lines.length; i++) {\n switch (lines[i]) {\n case 'a=sendrecv':\n case 'a=sendonly':\n case 'a=recvonly':\n case 'a=inactive':\n return lines[i].substring(2);\n default:\n // FIXME: What should happen here?\n }\n }\n if (sessionpart) {\n return SDPUtils.getDirection(sessionpart);\n }\n return 'sendrecv';\n};\n\nSDPUtils.getKind = function(mediaSection) {\n const lines = SDPUtils.splitLines(mediaSection);\n const mline = lines[0].split(' ');\n return mline[0].substring(2);\n};\n\nSDPUtils.isRejected = function(mediaSection) {\n return mediaSection.split(' ', 2)[1] === '0';\n};\n\nSDPUtils.parseMLine = function(mediaSection) {\n const lines = SDPUtils.splitLines(mediaSection);\n const parts = lines[0].substring(2).split(' ');\n return {\n kind: parts[0],\n port: parseInt(parts[1], 10),\n protocol: parts[2],\n fmt: parts.slice(3).join(' '),\n };\n};\n\nSDPUtils.parseOLine = function(mediaSection) 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\ No newline at end of file diff --git a/package-lock.json b/package-lock.json index 55a1d22..2cf1ba7 100644 --- a/package-lock.json +++ b/package-lock.json @@ -1,12 +1,12 @@ { "name": "@networked-aframe/naf-janus-adapter", - "version": "4.2.0", + "version": "4.3.0", "lockfileVersion": 3, "requires": true, "packages": { "": { "name": "@networked-aframe/naf-janus-adapter", - "version": "4.2.0", + "version": "4.3.0", "license": "MPL-2.0", "dependencies": { "@networked-aframe/minijanus": "0.7.0", diff --git a/package.json b/package.json index d769967..6a7db05 100644 --- a/package.json +++ b/package.json @@ -1,6 +1,6 @@ { "name": "@networked-aframe/naf-janus-adapter", - "version": "4.2.0", + "version": "4.3.0", "description": "networked-aframe Janus network adapter", "main": "src/index.js", "license": "MPL-2.0",