jiti-meet/react/features/rtcstats/RTCStats.js

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import rtcstatsInit from 'rtcstats/rtcstats';
import traceInit from 'rtcstats/trace-ws';
import {
createRTCStatsTraceCloseEvent,
sendAnalytics
} from '../analytics';
import logger from './logger';
/**
* Filter out RTCPeerConnection that are created by callstats.io.
*
* @param {*} config - Config object sent to the PC c'tor.
* @returns {boolean}
*/
function connectionFilter(config) {
if (config && config.iceServers[0] && config.iceServers[0].urls) {
for (const iceUrl of config.iceServers[0].urls) {
if (iceUrl.indexOf('taas.callstats.io') >= 0) {
return true;
}
}
}
}
/**
* Class that controls the rtcstats flow, because it overwrites and proxies global function it should only be
* initialized once.
*/
class RTCStats {
/**
* Initialize the rtcstats components. First off we initialize the trace, which is a wrapped websocket
* that does the actual communication with the server. Secondly, the rtcstats component is initialized,
* it overwrites GUM and PeerConnection global functions and adds a proxy over them used to capture stats.
* Note, lib-jitsi-meet takes references to these methods before initializing so the init method needs to be
* loaded before it does.
*
* @param {Object} options -.
* @param {string} options.rtcstatsEndpoint - The Amplitude app key required.
* @param {number} options.rtcstatsPollInterval - The getstats poll interval in ms.
* @returns {void}
*/
init(options) {
this.handleTraceWSClose = this.handleTraceWSClose.bind(this);
this.trace = traceInit(options.rtcstatsEndpoint, this.handleTraceWSClose);
rtcstatsInit(this.trace, options.rtcstatsPollInterval, [ '' ], connectionFilter);
this.initialized = true;
}
/**
* Check whether or not the RTCStats is initialized.
*
* @returns {boolean}
*/
isInitialized() {
return this.initialized;
}
/**
* Send identity data to rtcstats server, this will be reflected in the identity section of the stats dump.
* It can be generally used to send additional metadata that might be relevant such as amplitude user data
* or deployment specific information.
*
* @param {Object} identityData - Metadata object to send as identity.
* @returns {void}
*/
sendIdentityData(identityData) {
this.trace && this.trace('identity', null, identityData);
}
/**
* Connect to the rtcstats server instance. Stats (data obtained from getstats) won't be send until the
* connect successfully initializes, however calls to GUM are recorded in an internal buffer even if not
* connected and sent once it is established.
*
* @returns {void}
*/
connect() {
this.trace && this.trace.connect();
}
/**
* Self explanatory; closes the web socked connection.
* Note, at the point of writing this documentation there was no method to reset the function overwrites,
* thus even if the websocket is closed the global function proxies are still active but send no data,
* this shouldn't influence the normal flow of the application.
*
* @returns {void}
*/
close() {
this.trace && this.trace.close();
}
/**
* The way rtcstats is currently designed the ws wouldn't normally be closed by the application logic but rather
* by the page being closed/reloaded. Using this assumption any onclose event is most likely something abnormal
* that happened on the ws. We then track this in order to determine how many rtcstats connection were closed
* prematurely.
*
* @param {Object} closeEvent - Event sent by ws onclose.
* @returns {void}
*/
handleTraceWSClose(closeEvent) {
logger.info('RTCStats trace ws closed', closeEvent);
sendAnalytics(createRTCStatsTraceCloseEvent(closeEvent));
}
}
export default new RTCStats();