@twilio/voice-sdk
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Twilio's JavaScript Voice SDK
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JavaScript
"use strict";
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Object.defineProperty(exports, "__esModule", { value: true });
exports.PreflightTest = void 0;
var events_1 = require("events");
var call_1 = require("../call");
var device_1 = require("../device");
var errors_1 = require("../errors");
var log_1 = require("../log");
var stats_1 = require("../rtc/stats");
var constants_1 = require("../constants");
/**
* Runs some tests to identify issues, if any, prohibiting successful calling.
*/
var PreflightTest = /** @class */ (function (_super) {
__extends(PreflightTest, _super);
/**
* Construct a {@link PreflightTest} instance.
* @param token - A Twilio JWT token string.
* @param options
*/
function PreflightTest(token, options) {
var _this = _super.call(this) || this;
/**
* Whether this test has already logged an insights-connection-warning.
*/
_this._hasInsightsErrored = false;
/**
* An instance of Logger to use.
*/
_this._log = new log_1.default('PreflightTest');
/**
* Network related timing measurements for this test
*/
_this._networkTiming = {};
/**
* The options passed to {@link PreflightTest} constructor
*/
_this._options = {
codecPreferences: [call_1.default.Codec.PCMU, call_1.default.Codec.Opus],
edge: 'roaming',
fakeMicInput: false,
logLevel: 'error',
signalingTimeoutMs: 10000,
};
/**
* Current status of this test
*/
_this._status = PreflightTest.Status.Connecting;
Object.assign(_this._options, options);
_this._samples = [];
_this._warnings = [];
_this._startTime = Date.now();
_this._initDevice(token, __assign(__assign({}, _this._options), { fileInputStream: _this._options.fakeMicInput ?
_this._getStreamFromFile() : undefined }));
// Device sets the loglevel so start logging after initializing the device.
// Then selectively log options that users can modify.
var userOptions = [
'codecPreferences',
'edge',
'fakeMicInput',
'logLevel',
'signalingTimeoutMs',
];
var userOptionOverrides = [
'audioContext',
'deviceFactory',
'fileInputStream',
'getRTCIceCandidateStatsReport',
'iceServers',
'rtcConfiguration',
];
if (typeof options === 'object') {
var toLog_1 = __assign({}, options);
Object.keys(toLog_1).forEach(function (key) {
if (!userOptions.includes(key) && !userOptionOverrides.includes(key)) {
delete toLog_1[key];
}
if (userOptionOverrides.includes(key)) {
toLog_1[key] = true;
}
});
_this._log.debug('.constructor', JSON.stringify(toLog_1));
}
return _this;
}
/**
* Stops the current test and raises a failed event.
*/
PreflightTest.prototype.stop = function () {
var _this = this;
this._log.debug('.stop');
var error = new errors_1.GeneralErrors.CallCancelledError();
if (this._device) {
this._device.once(device_1.default.EventName.Unregistered, function () { return _this._onFailed(error); });
this._device.destroy();
}
else {
this._onFailed(error);
}
};
/**
* Emit a {PreflightTest.Warning}
*/
PreflightTest.prototype._emitWarning = function (name, description, rtcWarning) {
var warning = { name: name, description: description };
if (rtcWarning) {
warning.rtcWarning = rtcWarning;
}
this._warnings.push(warning);
this._log.debug("#".concat(PreflightTest.Events.Warning), JSON.stringify(warning));
this.emit(PreflightTest.Events.Warning, warning);
};
/**
* Returns call quality base on the RTC Stats
*/
PreflightTest.prototype._getCallQuality = function (mos) {
if (mos > 4.2) {
return PreflightTest.CallQuality.Excellent;
}
else if (mos >= 4.1 && mos <= 4.2) {
return PreflightTest.CallQuality.Great;
}
else if (mos >= 3.7 && mos <= 4) {
return PreflightTest.CallQuality.Good;
}
else if (mos >= 3.1 && mos <= 3.6) {
return PreflightTest.CallQuality.Fair;
}
else {
return PreflightTest.CallQuality.Degraded;
}
};
/**
* Returns the report for this test.
*/
PreflightTest.prototype._getReport = function () {
var _a, _b, _c;
var stats = this._getRTCStats();
var testTiming = { start: this._startTime };
if (this._endTime) {
testTiming.end = this._endTime;
testTiming.duration = this._endTime - this._startTime;
}
var report = {
callSid: this._callSid,
edge: this._edge,
iceCandidateStats: (_b = (_a = this._rtcIceCandidateStatsReport) === null || _a === void 0 ? void 0 : _a.iceCandidateStats) !== null && _b !== void 0 ? _b : [],
networkTiming: this._networkTiming,
samples: this._samples,
selectedEdge: this._options.edge,
stats: stats,
testTiming: testTiming,
totals: this._getRTCSampleTotals(),
warnings: this._warnings,
};
var selectedIceCandidatePairStats = (_c = this._rtcIceCandidateStatsReport) === null || _c === void 0 ? void 0 : _c.selectedIceCandidatePairStats;
if (selectedIceCandidatePairStats) {
report.selectedIceCandidatePairStats = selectedIceCandidatePairStats;
report.isTurnRequired = selectedIceCandidatePairStats.localCandidate.candidateType === 'relay'
|| selectedIceCandidatePairStats.remoteCandidate.candidateType === 'relay';
}
if (stats) {
report.callQuality = this._getCallQuality(stats.mos.average);
}
return report;
};
/**
* Returns RTC stats totals for this test
*/
PreflightTest.prototype._getRTCSampleTotals = function () {
if (!this._latestSample) {
return;
}
return __assign({}, this._latestSample.totals);
};
/**
* Returns RTC related stats captured during the test call
*/
PreflightTest.prototype._getRTCStats = function () {
var firstMosSampleIdx = this._samples.findIndex(function (sample) { return typeof sample.mos === 'number' && sample.mos > 0; });
var samples = firstMosSampleIdx >= 0
? this._samples.slice(firstMosSampleIdx)
: [];
if (!samples || !samples.length) {
return;
}
return ['jitter', 'mos', 'rtt'].reduce(function (statObj, stat) {
var _a;
var values = samples.map(function (s) { return s[stat]; });
return __assign(__assign({}, statObj), (_a = {}, _a[stat] = {
average: Number((values.reduce(function (total, value) { return total + value; }) / values.length).toPrecision(5)),
max: Math.max.apply(Math, values),
min: Math.min.apply(Math, values),
}, _a));
}, {});
};
/**
* Returns a MediaStream from a media file
*/
PreflightTest.prototype._getStreamFromFile = function () {
var audioContext = this._options.audioContext;
if (!audioContext) {
throw new errors_1.NotSupportedError('Cannot fake input audio stream: AudioContext is not supported by this browser.');
}
var audioEl = new Audio(constants_1.COWBELL_AUDIO_URL);
audioEl.addEventListener('canplaythrough', function () { return audioEl.play(); });
if (typeof audioEl.setAttribute === 'function') {
audioEl.setAttribute('crossorigin', 'anonymous');
}
var src = audioContext.createMediaElementSource(audioEl);
var dest = audioContext.createMediaStreamDestination();
src.connect(dest);
return dest.stream;
};
/**
* Initialize the device
*/
PreflightTest.prototype._initDevice = function (token, options) {
var _this = this;
try {
this._device = new (options.deviceFactory || device_1.default)(token, {
chunderw: options.chunderw,
codecPreferences: options.codecPreferences,
edge: options.edge,
eventgw: options.eventgw,
fileInputStream: options.fileInputStream,
logLevel: options.logLevel,
preflight: true,
});
this._device.once(device_1.default.EventName.Registered, function () {
_this._onDeviceRegistered();
});
this._device.once(device_1.default.EventName.Error, function (error) {
_this._onDeviceError(error);
});
this._device.register();
}
catch (error) {
// We want to return before failing so the consumer can capture the event
setTimeout(function () {
_this._onFailed(error);
});
return;
}
this._signalingTimeoutTimer = setTimeout(function () {
_this._onDeviceError(new errors_1.SignalingErrors.ConnectionError('WebSocket Connection Timeout'));
}, options.signalingTimeoutMs);
};
/**
* Called on {@link Device} error event
* @param error
*/
PreflightTest.prototype._onDeviceError = function (error) {
this._device.destroy();
this._onFailed(error);
};
/**
* Called on {@link Device} ready event
*/
PreflightTest.prototype._onDeviceRegistered = function () {
return __awaiter(this, void 0, void 0, function () {
var _a, audio, publisher;
var _this = this;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
clearTimeout(this._echoTimer);
clearTimeout(this._signalingTimeoutTimer);
_a = this;
return [4 /*yield*/, this._device.connect({
rtcConfiguration: this._options.rtcConfiguration,
})];
case 1:
_a._call = _b.sent();
this._networkTiming.signaling = { start: Date.now() };
this._setupCallHandlers(this._call);
this._edge = this._device.edge || undefined;
if (this._options.fakeMicInput) {
this._echoTimer = setTimeout(function () { return _this._device.disconnectAll(); }, constants_1.ECHO_TEST_DURATION);
audio = this._device.audio;
if (audio) {
audio.disconnect(false);
audio.outgoing(false);
}
}
this._call.once('disconnect', function () {
_this._device.once(device_1.default.EventName.Unregistered, function () { return _this._onUnregistered(); });
_this._device.destroy();
});
publisher = this._call['_publisher'];
publisher.on('error', function () {
if (!_this._hasInsightsErrored) {
_this._emitWarning('insights-connection-error', 'Received an error when attempting to connect to Insights gateway');
}
_this._hasInsightsErrored = true;
});
return [2 /*return*/];
}
});
});
};
/**
* Called when there is a fatal error
* @param error
*/
PreflightTest.prototype._onFailed = function (error) {
clearTimeout(this._echoTimer);
clearTimeout(this._signalingTimeoutTimer);
this._releaseHandlers();
this._endTime = Date.now();
this._status = PreflightTest.Status.Failed;
this._log.debug("#".concat(PreflightTest.Events.Failed), error);
this.emit(PreflightTest.Events.Failed, error);
};
/**
* Called when the device goes offline.
* This indicates that the test has been completed, but we won't know if it failed or not.
* The onError event will be the indicator whether the test failed.
*/
PreflightTest.prototype._onUnregistered = function () {
var _this = this;
// We need to make sure we always execute preflight.on('completed') last
// as client SDK sometimes emits 'offline' event before emitting fatal errors.
setTimeout(function () {
if (_this._status === PreflightTest.Status.Failed) {
return;
}
clearTimeout(_this._echoTimer);
clearTimeout(_this._signalingTimeoutTimer);
_this._releaseHandlers();
_this._endTime = Date.now();
_this._status = PreflightTest.Status.Completed;
_this._report = _this._getReport();
_this._log.debug("#".concat(PreflightTest.Events.Completed), JSON.stringify(_this._report));
_this.emit(PreflightTest.Events.Completed, _this._report);
}, 10);
};
/**
* Clean up all handlers for device and call
*/
PreflightTest.prototype._releaseHandlers = function () {
[this._device, this._call].forEach(function (emitter) {
if (emitter) {
emitter.eventNames().forEach(function (name) { return emitter.removeAllListeners(name); });
}
});
};
/**
* Setup the event handlers for the {@link Call} of the test call
* @param call
*/
PreflightTest.prototype._setupCallHandlers = function (call) {
var _this = this;
if (this._options.fakeMicInput) {
// When volume events start emitting, it means all audio outputs have been created.
// Let's mute them if we're using fake mic input.
call.once('volume', function () {
call['_mediaHandler'].outputs
.forEach(function (output) { return output.audio.muted = true; });
});
}
call.on('warning', function (name, data) {
_this._emitWarning(name, 'Received an RTCWarning. See .rtcWarning for the RTCWarning', data);
});
call.once('accept', function () {
_this._callSid = call['_mediaHandler'].callSid;
_this._status = PreflightTest.Status.Connected;
_this._log.debug("#".concat(PreflightTest.Events.Connected));
_this.emit(PreflightTest.Events.Connected);
});
call.on('sample', function (sample) { return __awaiter(_this, void 0, void 0, function () {
var _a;
return __generator(this, function (_b) {
switch (_b.label) {
case 0:
if (!!this._latestSample) return [3 /*break*/, 2];
_a = this;
return [4 /*yield*/, (this._options.getRTCIceCandidateStatsReport || stats_1.getRTCIceCandidateStatsReport)(call['_mediaHandler'].version.pc)];
case 1:
_a._rtcIceCandidateStatsReport = _b.sent();
_b.label = 2;
case 2:
this._latestSample = sample;
this._samples.push(sample);
this._log.debug("#".concat(PreflightTest.Events.Sample), JSON.stringify(sample));
this.emit(PreflightTest.Events.Sample, sample);
return [2 /*return*/];
}
});
}); });
// TODO: Update the following once the SDK supports emitting these events
// Let's shim for now
[{
reportLabel: 'peerConnection',
type: 'pcconnection',
}, {
reportLabel: 'ice',
type: 'iceconnection',
}, {
reportLabel: 'dtls',
type: 'dtlstransport',
}, {
reportLabel: 'signaling',
type: 'signaling',
}].forEach(function (_a) {
var type = _a.type, reportLabel = _a.reportLabel;
var handlerName = "on".concat(type, "statechange");
var originalHandler = call['_mediaHandler'][handlerName];
call['_mediaHandler'][handlerName] = function (state) {
var timing = _this._networkTiming[reportLabel]
= _this._networkTiming[reportLabel] || { start: 0 };
if (state === 'connecting' || state === 'checking') {
timing.start = Date.now();
}
else if ((state === 'connected' || state === 'stable') && !timing.duration) {
timing.end = Date.now();
timing.duration = timing.end - timing.start;
}
originalHandler(state);
};
});
};
Object.defineProperty(PreflightTest.prototype, "callSid", {
/**
* The callsid generated for the test call.
*/
get: function () {
return this._callSid;
},
enumerable: false,
configurable: true
});
Object.defineProperty(PreflightTest.prototype, "endTime", {
/**
* A timestamp in milliseconds of when the test ended.
*/
get: function () {
return this._endTime;
},
enumerable: false,
configurable: true
});
Object.defineProperty(PreflightTest.prototype, "latestSample", {
/**
* The latest WebRTC sample collected.
*/
get: function () {
return this._latestSample;
},
enumerable: false,
configurable: true
});
Object.defineProperty(PreflightTest.prototype, "report", {
/**
* The report for this test.
*/
get: function () {
return this._report;
},
enumerable: false,
configurable: true
});
Object.defineProperty(PreflightTest.prototype, "startTime", {
/**
* A timestamp in milliseconds of when the test started.
*/
get: function () {
return this._startTime;
},
enumerable: false,
configurable: true
});
Object.defineProperty(PreflightTest.prototype, "status", {
/**
* The status of the test.
*/
get: function () {
return this._status;
},
enumerable: false,
configurable: true
});
return PreflightTest;
}(events_1.EventEmitter));
exports.PreflightTest = PreflightTest;
/**
* @mergeModuleWith PreflightTest
*/
(function (PreflightTest) {
/**
* The quality of the call determined by different mos ranges.
* Mos is calculated base on the WebRTC stats - rtt, jitter, and packet lost.
*/
var CallQuality;
(function (CallQuality) {
/**
* If the average mos is over 4.2.
*/
CallQuality["Excellent"] = "excellent";
/**
* If the average mos is between 4.1 and 4.2 both inclusive.
*/
CallQuality["Great"] = "great";
/**
* If the average mos is between 3.7 and 4.0 both inclusive.
*/
CallQuality["Good"] = "good";
/**
* If the average mos is between 3.1 and 3.6 both inclusive.
*/
CallQuality["Fair"] = "fair";
/**
* If the average mos is 3.0 or below.
*/
CallQuality["Degraded"] = "degraded";
})(CallQuality = PreflightTest.CallQuality || (PreflightTest.CallQuality = {}));
/**
* Possible events that a [[PreflightTest]] might emit.
*/
var Events;
(function (Events) {
/**
* See [[PreflightTest.completedEvent]]
*/
Events["Completed"] = "completed";
/**
* See [[PreflightTest.connectedEvent]]
*/
Events["Connected"] = "connected";
/**
* See [[PreflightTest.failedEvent]]
*/
Events["Failed"] = "failed";
/**
* See [[PreflightTest.sampleEvent]]
*/
Events["Sample"] = "sample";
/**
* See [[PreflightTest.warningEvent]]
*/
Events["Warning"] = "warning";
})(Events = PreflightTest.Events || (PreflightTest.Events = {}));
/**
* Possible status of the test.
*/
var Status;
(function (Status) {
/**
* Call to Twilio has initiated.
*/
Status["Connecting"] = "connecting";
/**
* Call to Twilio has been established.
*/
Status["Connected"] = "connected";
/**
* The connection to Twilio has been disconnected and the test call has completed.
*/
Status["Completed"] = "completed";
/**
* The test has stopped and failed.
*/
Status["Failed"] = "failed";
})(Status = PreflightTest.Status || (PreflightTest.Status = {}));
})(PreflightTest || (exports.PreflightTest = PreflightTest = {}));
//# 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