refactor: per-track WebRTC diagnostic engine replacing flat stats model

Extract stats polling into useTrackStats hook with per-sender/receiver
stats via RTCRtpSender.getStats(), delta-based FPS (fixes 25fps overwrite
bug with camera+screenshare), and track-to-source matching via LiveKit
TrackPublication identity. ConnectionInfoPopover becomes a pure display
component with Network/Audio/Video sections. Remove soft-launch diagnostic
loop from useLiveKit.
This commit is contained in:
Jannis Braun
2026-02-24 00:36:31 +01:00
parent b6adf310fc
commit 9b0d319ab2
3 changed files with 653 additions and 400 deletions
@@ -1,5 +1,5 @@
import React, { useState, useEffect, useRef } from 'react';
import { Track } from 'livekit-client';
import React, { useEffect, useRef } from 'react';
import { useTrackStats, AudioTrackStat, VideoTrackStat } from '../../hooks/useTrackStats';
import { getActiveRoom } from '../../hooks/useLiveKit';
interface ConnectionInfoPopoverProps {
@@ -7,77 +7,9 @@ interface ConnectionInfoPopoverProps {
onClose: () => void;
}
interface ConnectionStats {
ping: number | null;
packetLoss: number | null;
jitter: number | null;
audioUp: number | null;
audioDown: number | null;
videoUp: number | null;
videoDown: number | null;
audioCodec: string | null;
videoCodec: string | null;
resolution: string | null;
fps: number | null;
qualityLimitation: string | null;
serverAddress: string | null;
protocol: string | null;
candidateType: string | null;
}
interface PrevSample {
bytes: number;
timestamp: number;
}
/**
* Discover all unique RTCPeerConnections from the LiveKit Room engine.
* Different livekit-client versions expose the PC at different internal paths.
* We collect all of them and deduplicate, so the stats loop can process
* outbound-rtp and inbound-rtp reports regardless of transport architecture
* (split publisher/subscriber vs unified-plan single PC).
*/
function discoverPeerConnections(room: any): RTCPeerConnection[] {
const engine = room?.engine;
if (!engine) return [];
const pcs: RTCPeerConnection[] = [];
const seen = new WeakSet<object>();
const tryAdd = (val: any) => {
if (val && typeof val.getStats === 'function' && !seen.has(val)) {
seen.add(val);
pcs.push(val);
}
};
// Current livekit-client (1.x+): engine.pcManager.{publisher,subscriber}.pc
tryAdd(engine.pcManager?.publisher?.pc);
tryAdd(engine.pcManager?.subscriber?.pc);
// Private backing field fallback
tryAdd(engine.pcManager?.publisher?._pc);
tryAdd(engine.pcManager?.subscriber?._pc);
// Older livekit-client paths
tryAdd(engine.publisher?.pc);
tryAdd(engine.subscriber?.pc);
// Unified-plan single PC
tryAdd(engine.pc);
tryAdd(room.pc);
return pcs;
}
/** Determine media kind from a WebRTC stats report (handles both spec and legacy fields). */
function reportKind(report: any): 'audio' | 'video' | null {
const k = report.kind ?? report.mediaType;
if (k === 'audio' || k === 'video') return k;
return null;
}
function formatBitrate(bps: number | null): string {
if (bps === null) return '\u2014';
if (bps < 1000) return `${Math.round(bps)} kbps`;
return `${(bps / 1000).toFixed(bps >= 10000 ? 0 : 1)} Mbps`;
function formatBitrate(kbps: number): string {
if (kbps < 1000) return `${Math.round(kbps)} kbps`;
return `${(kbps / 1000).toFixed(kbps >= 10000 ? 0 : 1)} Mbps`;
}
function pingColor(ms: number): string {
@@ -98,10 +30,89 @@ function jitterColor(ms: number): string {
return 'text-discord-red';
}
function sourceLabel(source: string): string {
switch (source) {
case 'microphone': return 'Microphone';
case 'camera': return 'Camera';
case 'screen_share': return 'Screen';
case 'screen_share_audio': return 'Screen Audio';
default: return 'Unknown';
}
}
function trackLabel(direction: 'send' | 'recv', source: string, participantName: string | null): string {
const arrow = direction === 'send' ? '\u2191' : '\u2193';
if (direction === 'send') {
return `${sourceLabel(source)} ${arrow}`;
}
const name = participantName ?? 'Remote';
return `${name} ${sourceLabel(source)} ${arrow}`;
}
const Row = ({ label, value, colorClass }: { label: string; value: string; colorClass?: string }) => (
<div className="flex items-center justify-between py-[3px]">
<span className="text-[12px] text-discord-text-muted">{label}</span>
<span className={`text-[12px] font-medium ${colorClass ?? 'text-discord-text-secondary'}`}>{value}</span>
</div>
);
const Divider = () => <div className="border-t border-[#2b2d31] my-1" />;
const SectionHeader = ({ title }: { title: string }) => (
<div className="text-[10px] font-bold text-discord-text-muted uppercase tracking-wider pt-1 pb-[2px]">
{title}
</div>
);
function AudioTrackRow({ track }: { track: AudioTrackStat }) {
const label = trackLabel(track.direction, track.source, track.participantName);
return (
<div className="flex items-center justify-between py-[3px]">
<span className="text-[12px] text-discord-text-muted truncate mr-2">{label}</span>
<span className="text-[12px] font-medium text-discord-text-secondary whitespace-nowrap">
{formatBitrate(track.bitrate)}
{track.codec && <span className="text-discord-text-muted ml-2">{track.codec}</span>}
</span>
</div>
);
}
function VideoTrackRow({ track }: { track: VideoTrackStat }) {
const label = trackLabel(track.direction, track.source, track.participantName);
const resolution = (track.width && track.height) ? `${track.width}\u00d7${track.height}` : null;
return (
<div className="py-[3px]">
<div className="flex items-center justify-between">
<span className="text-[12px] text-discord-text-muted truncate mr-2">{label}</span>
<span className="text-[12px] font-medium text-discord-text-secondary whitespace-nowrap">
{formatBitrate(track.bitrate)}
{track.codec && <span className="text-discord-text-muted ml-2">{track.codec}</span>}
</span>
</div>
{(resolution || track.fps !== null || track.qualityLimitation || track.simulcastLayer) && (
<div className="flex items-center justify-between pl-3">
<span className="text-[11px] text-discord-text-muted">
{resolution && `${resolution}`}
{track.fps !== null && ` @${track.fps}`}
</span>
<span className="text-[11px] text-discord-text-muted">
{track.direction === 'send' && track.qualityLimitation && track.qualityLimitation !== 'none'
? track.qualityLimitation
: ''}
{track.direction === 'recv' && track.simulcastLayer
? track.simulcastLayer
: ''}
</span>
</div>
)}
</div>
);
}
export function ConnectionInfoPopover({ open, onClose }: ConnectionInfoPopoverProps) {
const popoverRef = useRef<HTMLDivElement>(null);
const prevSampleRef = useRef<Map<string, PrevSample>>(new Map());
const [stats, setStats] = useState<ConnectionStats | null>(null);
const stats = useTrackStats(open);
// Click-outside to close
useEffect(() => {
@@ -115,266 +126,9 @@ export function ConnectionInfoPopover({ open, onClose }: ConnectionInfoPopoverPr
return () => document.removeEventListener('mousedown', handleClick);
}, [open, onClose]);
// Stats polling — only while open
useEffect(() => {
if (!open) {
prevSampleRef.current.clear();
setStats(null);
return;
}
const poll = async () => {
const room = getActiveRoom();
if (!room) {
setStats(null);
return;
}
const pcs = discoverPeerConnections(room as any);
if (pcs.length === 0) {
setStats(null);
return;
}
const result: ConnectionStats = {
ping: null,
packetLoss: null,
jitter: null,
audioUp: null,
audioDown: null,
videoUp: null,
videoDown: null,
audioCodec: null,
videoCodec: null,
resolution: null,
fps: null,
qualityLimitation: null,
serverAddress: null,
protocol: null,
candidateType: null,
};
const prev = prevSampleRef.current;
const now = performance.now();
// Accumulators for inbound aggregate metrics
let totalPacketsReceived = 0;
let totalPacketsLost = 0;
let totalAudioDown = 0;
let hasAudioDown = false;
let totalVideoDown = 0;
let hasVideoDown = false;
// Track candidate-pair remote ID for Safari fallback (see after forEach)
let selectedCandidatePairRemoteId: string | null = null;
// Process stats from ALL discovered PeerConnections.
// Report types (outbound-rtp, inbound-rtp, candidate-pair, etc.) are
// self-describing, so we don't need to know which PC they came from.
for (const pc of pcs) {
let reports: RTCStatsReport;
try {
reports = await pc.getStats();
} catch {
continue;
}
// Build codec map for this PC's stats (codecId → short name)
const codecMap = new Map<string, string>();
reports.forEach((report: any) => {
if (report.type === 'codec') {
codecMap.set(report.id, report.mimeType?.split('/')[1] ?? report.mimeType ?? '');
}
});
reports.forEach((report: any) => {
const kind = reportKind(report);
// ── RTT from candidate-pair ──
if (
report.type === 'candidate-pair' &&
report.state === 'succeeded'
) {
if (report.currentRoundTripTime != null) {
result.ping = Math.round(report.currentRoundTripTime * 1000);
}
// Safari fallback: collect remote candidate ID for post-loop lookup
if (!result.serverAddress && report.remoteCandidateId) {
selectedCandidatePairRemoteId = report.remoteCandidateId;
}
}
// ── Outbound (publisher) ──
if (report.type === 'outbound-rtp') {
const key = `out-${report.ssrc}`;
const prevEntry = prev.get(key);
if (kind === 'audio') {
if (prevEntry) {
const deltaBits = (report.bytesSent - prevEntry.bytes) * 8;
const deltaMs = now - prevEntry.timestamp;
if (deltaMs > 0) result.audioUp = deltaBits / deltaMs;
}
prev.set(key, { bytes: report.bytesSent, timestamp: now });
if (report.codecId && codecMap.has(report.codecId)) {
result.audioCodec = codecMap.get(report.codecId)!;
}
}
if (kind === 'video') {
if (prevEntry) {
const deltaBits = (report.bytesSent - prevEntry.bytes) * 8;
const deltaMs = now - prevEntry.timestamp;
if (deltaMs > 0) {
const bitrate = deltaBits / deltaMs;
// Only accumulate when bitrate > 0 — filters stale outbound-rtp
// reports that Safari/Chrome retain after camera/screenshare stops
if (bitrate > 0) {
result.videoUp = (result.videoUp ?? 0) + bitrate;
}
}
}
prev.set(key, { bytes: report.bytesSent, timestamp: now });
if (report.codecId && codecMap.has(report.codecId)) {
result.videoCodec = codecMap.get(report.codecId)!;
}
// Resolution + FPS — take the active track (non-zero dimensions)
if (report.frameWidth > 0 && report.frameHeight > 0) {
result.resolution = `${report.frameWidth}\u00d7${report.frameHeight}`;
result.fps = Math.round(report.framesPerSecond || 0);
}
if (report.qualityLimitationReason) {
result.qualityLimitation = report.qualityLimitationReason;
}
}
}
// ── Inbound (subscriber) ──
if (report.type === 'inbound-rtp') {
const key = `in-${report.ssrc}`;
const prevEntry = prev.get(key);
if (kind === 'audio') {
if (result.jitter === null && report.jitter != null) {
result.jitter = Math.round(report.jitter * 1000);
}
totalPacketsReceived += report.packetsReceived || 0;
totalPacketsLost += report.packetsLost || 0;
if (prevEntry) {
const deltaBits = (report.bytesReceived - prevEntry.bytes) * 8;
const deltaMs = now - prevEntry.timestamp;
if (deltaMs > 0) {
totalAudioDown += deltaBits / deltaMs;
hasAudioDown = true;
}
}
prev.set(key, { bytes: report.bytesReceived, timestamp: now });
}
if (kind === 'video') {
totalPacketsReceived += report.packetsReceived || 0;
totalPacketsLost += report.packetsLost || 0;
if (prevEntry) {
const deltaBits = (report.bytesReceived - prevEntry.bytes) * 8;
const deltaMs = now - prevEntry.timestamp;
if (deltaMs > 0) {
const bitrate = deltaBits / deltaMs;
// Only accumulate when bitrate > 0 — filters stale inbound-rtp
if (bitrate > 0) {
totalVideoDown += bitrate;
hasVideoDown = true;
}
}
}
prev.set(key, { bytes: report.bytesReceived, timestamp: now });
}
}
// ── Server address from remote-candidate ──
// Safari may leave `address` empty but populate the legacy `ip` field
if (report.type === 'remote-candidate' && !result.serverAddress) {
const addr = report.address || report.ip;
if (addr) {
result.serverAddress = addr;
result.protocol = report.protocol ?? null;
result.candidateType = report.candidateType ?? null;
}
}
});
// Safari fallback: look up remote candidate by ID from candidate-pair
if (!result.serverAddress && selectedCandidatePairRemoteId) {
const remoteCandidate = reports.get(selectedCandidatePairRemoteId);
if (remoteCandidate) {
const addr = remoteCandidate.address || remoteCandidate.ip;
if (addr) {
result.serverAddress = addr;
result.protocol = remoteCandidate.protocol ?? null;
result.candidateType = remoteCandidate.candidateType ?? null;
}
}
}
}
// Safari fallback: resolution from MediaStreamTrack.getSettings()
// Safari omits frameWidth/frameHeight from outbound-rtp stats entirely
if (!result.resolution && result.videoUp !== null && result.videoUp > 0) {
const localPart = room.localParticipant;
for (const pub of localPart.trackPublications.values()) {
if (pub.source === Track.Source.Camera || pub.source === Track.Source.ScreenShare) {
const mt = pub.track?.mediaStreamTrack;
if (mt && mt.readyState === 'live') {
const s = mt.getSettings();
if (s.width && s.height) {
result.resolution = `${s.width}\u00d7${s.height}`;
result.fps = s.frameRate ? Math.round(s.frameRate) : null;
break;
}
}
}
}
}
// Finalize aggregated inbound metrics
if (hasAudioDown) result.audioDown = totalAudioDown;
if (hasVideoDown) result.videoDown = totalVideoDown;
const totalPackets = totalPacketsReceived + totalPacketsLost;
if (totalPackets > 0) {
result.packetLoss = (totalPacketsLost / totalPackets) * 100;
}
setStats(result);
};
poll();
const interval = setInterval(poll, 1500);
return () => clearInterval(interval);
}, [open]);
if (!open) return null;
const room = getActiveRoom();
const hasVideo = stats && (
(stats.videoUp !== null && stats.videoUp > 0) ||
(stats.videoDown !== null && stats.videoDown > 0) ||
stats.resolution !== null
);
const Row = ({ label, value, colorClass }: { label: string; value: string; colorClass?: string }) => (
<div className="flex items-center justify-between py-[3px]">
<span className="text-[12px] text-discord-text-muted">{label}</span>
<span className={`text-[12px] font-medium ${colorClass ?? 'text-discord-text-secondary'}`}>{value}</span>
</div>
);
const Divider = () => <div className="border-t border-[#2b2d31] my-1" />;
return (
<div
@@ -393,66 +147,53 @@ export function ConnectionInfoPopover({ open, onClose }: ConnectionInfoPopoverPr
) : (
<>
{/* Network */}
<SectionHeader title="Network" />
<Row
label="Ping"
value={stats.ping !== null ? `${stats.ping} ms` : '\u2014'}
colorClass={stats.ping !== null ? pingColor(stats.ping) : undefined}
value={stats.network.ping !== null ? `${stats.network.ping} ms` : '\u2014'}
colorClass={stats.network.ping !== null ? pingColor(stats.network.ping) : undefined}
/>
<Row
label="Packet Loss"
value={stats.packetLoss !== null ? `${stats.packetLoss.toFixed(1)}%` : '\u2014'}
colorClass={stats.packetLoss !== null ? lossColor(stats.packetLoss) : undefined}
value={stats.network.packetLoss !== null ? `${stats.network.packetLoss.toFixed(1)}%` : '\u2014'}
colorClass={stats.network.packetLoss !== null ? lossColor(stats.network.packetLoss) : undefined}
/>
<Row
label="Jitter"
value={stats.jitter !== null ? `${stats.jitter} ms` : '\u2014'}
colorClass={stats.jitter !== null ? jitterColor(stats.jitter) : undefined}
value={stats.network.jitter !== null ? `${stats.network.jitter} ms` : '\u2014'}
colorClass={stats.network.jitter !== null ? jitterColor(stats.network.jitter) : undefined}
/>
<Divider />
{/* Bitrates */}
<Row label="Audio \u2191" value={formatBitrate(stats.audioUp)} />
<Row label="Audio \u2193" value={formatBitrate(stats.audioDown)} />
{hasVideo && (
<>
<Row label="Video \u2191" value={formatBitrate(stats.videoUp)} />
<Row label="Video \u2193" value={formatBitrate(stats.videoDown)} />
</>
)}
<Divider />
{/* Codec + media info */}
<Row
label="Codec"
value={[stats.audioCodec, stats.videoCodec].filter(Boolean).join(' / ') || '\u2014'}
/>
{hasVideo && (
<>
<Row
label="Resolution"
value={stats.resolution ? `${stats.resolution}${stats.fps ? ` @${stats.fps}` : ''}` : '\u2014'}
/>
<Row
label="Quality"
value={stats.qualityLimitation ?? '\u2014'}
/>
</>
)}
<Divider />
{/* Server */}
<Row label="Server" value={stats.serverAddress ?? '\u2014'} />
<Row label="Server" value={stats.network.serverAddress ?? '\u2014'} />
<Row
label="Protocol"
value={
stats.protocol
? `${stats.protocol}${stats.candidateType ? ` (${stats.candidateType})` : ''}`
stats.network.protocol
? `${stats.network.protocol}${stats.network.candidateType ? ` (${stats.network.candidateType})` : ''}`
: '\u2014'
}
/>
{/* Audio Tracks */}
{stats.audioTracks.length > 0 && (
<>
<Divider />
<SectionHeader title="Audio" />
{stats.audioTracks.map((t) => (
<AudioTrackRow key={t.key} track={t} />
))}
</>
)}
{/* Video Tracks */}
{stats.videoTracks.length > 0 && (
<>
<Divider />
<SectionHeader title="Video" />
{stats.videoTracks.map((t) => (
<VideoTrackRow key={t.key} track={t} />
))}
</>
)}
</>
)}
</div>
-23
View File
@@ -536,29 +536,6 @@ export function useLiveKit() {
updateActiveTracks().catch(() => {});
}, [room, videoQuality, isScreenSharing, isCameraOn]);
useEffect(() => {
if (!room) return;
const interval = setInterval(async () => {
try {
const engine = (room as any).engine;
const pc = engine?.pcManager?.publisher?.pc || engine?.publisher?.pc || engine?.pc || (room as any).pc;
if (!pc) return;
const stats = await (pc as RTCPeerConnection).getStats();
stats.forEach((report: any) => {
if (report.type === 'outbound-rtp' && report.kind === 'video' && report.frameWidth > 0) {
const fps = Math.round(report.framesPerSecond || 0);
const key = `_lastBytes_${report.ssrc}`;
const lastBytes = (window as any)[key] || report.bytesSent;
const bitrate = (((report.bytesSent - lastBytes) * 8) / 5000 / 1000).toFixed(2);
(window as any)[key] = report.bytesSent;
console.log(`[Soft-Launch Diagnostic] ${report.frameWidth}x${report.frameHeight} @ ${fps} FPS (~${bitrate} Mbps) | ${report.qualityLimitationReason}`);
}
});
} catch (err) { }
}, 5000);
return () => clearInterval(interval);
}, [room]);
useEffect(() => {
return () => { _connectGeneration++; SpeakingDetector.getInstance().clear(); if (roomRef.current) { destroyRoom(roomRef.current); roomRef.current = null; _activeRoom = null; } };
}, []);
+535
View File
@@ -0,0 +1,535 @@
import { useState, useEffect, useRef } from 'react';
import { Track } from 'livekit-client';
import { getActiveRoom } from './useLiveKit';
// ── Types ──
type TrackSource = 'microphone' | 'camera' | 'screen_share' | 'screen_share_audio' | 'unknown';
type TrackDirection = 'send' | 'recv';
export interface AudioTrackStat {
key: string;
direction: TrackDirection;
source: TrackSource;
participantName: string | null;
bitrate: number;
codec: string | null;
packetLoss: number | null;
jitter: number | null;
}
export interface VideoTrackStat {
key: string;
direction: TrackDirection;
source: TrackSource;
participantName: string | null;
bitrate: number;
codec: string | null;
width: number | null;
height: number | null;
fps: number | null;
qualityLimitation: string | null;
simulcastLayer: string | null;
}
export interface NetworkStats {
ping: number | null;
packetLoss: number | null;
jitter: number | null;
serverAddress: string | null;
protocol: string | null;
candidateType: string | null;
}
export interface TrackStatsSnapshot {
network: NetworkStats;
audioTracks: AudioTrackStat[];
videoTracks: VideoTrackStat[];
}
// ── Internal types ──
interface TrackIdentity {
source: TrackSource;
direction: TrackDirection;
participantName: string | null;
}
interface PrevSample {
bytes: number;
frames: number;
timestamp: number;
packetsRecv: number;
packetsLost: number;
}
// ── Helpers ──
function mapSource(lkSource: Track.Source): TrackSource {
switch (lkSource) {
case Track.Source.Microphone: return 'microphone';
case Track.Source.Camera: return 'camera';
case Track.Source.ScreenShare: return 'screen_share';
case Track.Source.ScreenShareAudio: return 'screen_share_audio';
default: return 'unknown';
}
}
function parseUsername(identity: string): string {
const parts = identity.split(':');
return parts[1] ?? identity;
}
/** Determine media kind from a WebRTC stats report (handles both spec and legacy fields). */
function reportKind(report: any): 'audio' | 'video' | null {
const k = report.kind ?? report.mediaType;
if (k === 'audio' || k === 'video') return k;
return null;
}
/**
* Discover all unique RTCPeerConnections from the LiveKit Room engine.
* Different livekit-client versions expose the PC at different internal paths.
*/
function discoverPeerConnections(room: any): RTCPeerConnection[] {
const engine = room?.engine;
if (!engine) return [];
const pcs: RTCPeerConnection[] = [];
const seen = new WeakSet<object>();
const tryAdd = (val: any) => {
if (val && typeof val.getStats === 'function' && !seen.has(val)) {
seen.add(val);
pcs.push(val);
}
};
// Current livekit-client (1.x+): engine.pcManager.{publisher,subscriber}.pc
tryAdd(engine.pcManager?.publisher?.pc);
tryAdd(engine.pcManager?.subscriber?.pc);
// Private backing field fallback
tryAdd(engine.pcManager?.publisher?._pc);
tryAdd(engine.pcManager?.subscriber?._pc);
// Older livekit-client paths
tryAdd(engine.publisher?.pc);
tryAdd(engine.subscriber?.pc);
// Unified-plan single PC
tryAdd(engine.pc);
tryAdd(room.pc);
return pcs;
}
function inferSimulcastLayer(width: number | null): string | null {
if (width === null || width <= 0) return null;
if (width >= 1920) return 'High';
if (width >= 1280) return 'Medium';
return 'Low';
}
// ── Hook ──
export function useTrackStats(enabled: boolean): TrackStatsSnapshot | null {
const [snapshot, setSnapshot] = useState<TrackStatsSnapshot | null>(null);
const prevSampleRef = useRef<Map<string, PrevSample>>(new Map());
useEffect(() => {
if (!enabled) {
prevSampleRef.current.clear();
setSnapshot(null);
return;
}
const poll = async () => {
const room = getActiveRoom();
if (!room) {
setSnapshot(null);
return;
}
const pcs = discoverPeerConnections(room as any);
if (pcs.length === 0) {
setSnapshot(null);
return;
}
const prev = prevSampleRef.current;
const now = performance.now();
// ── Step A: Network stats + codec map from pc.getStats() ──
const network: NetworkStats = {
ping: null,
packetLoss: null,
jitter: null,
serverAddress: null,
protocol: null,
candidateType: null,
};
// Global codec map across all PCs
const globalCodecMap = new Map<string, string>();
let selectedCandidatePairRemoteId: string | null = null;
for (const pc of pcs) {
let reports: RTCStatsReport;
try {
reports = await pc.getStats();
} catch {
continue;
}
reports.forEach((report: any) => {
if (report.type === 'codec') {
globalCodecMap.set(report.id, report.mimeType?.split('/')[1] ?? report.mimeType ?? '');
}
if (report.type === 'candidate-pair' && report.state === 'succeeded') {
if (report.currentRoundTripTime != null) {
network.ping = Math.round(report.currentRoundTripTime * 1000);
}
if (!network.serverAddress && report.remoteCandidateId) {
selectedCandidatePairRemoteId = report.remoteCandidateId;
}
}
if (report.type === 'remote-candidate' && !network.serverAddress) {
const addr = report.address || report.ip;
if (addr) {
network.serverAddress = addr;
network.protocol = report.protocol ?? null;
network.candidateType = report.candidateType ?? null;
}
}
});
// Safari fallback: look up remote candidate by ID
if (!network.serverAddress && selectedCandidatePairRemoteId) {
let reports2: RTCStatsReport;
try {
reports2 = await pc.getStats();
} catch {
continue;
}
const remoteCandidate = reports2.get(selectedCandidatePairRemoteId);
if (remoteCandidate) {
const addr = remoteCandidate.address || remoteCandidate.ip;
if (addr) {
network.serverAddress = addr;
network.protocol = remoteCandidate.protocol ?? null;
network.candidateType = remoteCandidate.candidateType ?? null;
}
}
}
}
// ── Step B: Build TrackIdentityMap ──
const identityMap = new Map<string, TrackIdentity>();
// Local tracks
for (const pub of room.localParticipant.trackPublications.values()) {
const mst = pub.track?.mediaStreamTrack;
if (mst) {
identityMap.set(mst.id, {
source: mapSource(pub.source),
direction: 'send',
participantName: null,
});
}
}
// Remote tracks
for (const [, rp] of room.remoteParticipants) {
const name = parseUsername(rp.identity);
for (const pub of rp.trackPublications.values()) {
const mst = pub.track?.mediaStreamTrack;
if (mst) {
identityMap.set(mst.id, {
source: mapSource(pub.source),
direction: 'recv',
participantName: name,
});
}
}
}
// ── Step C & D: Per-sender and per-receiver stats ──
const audioTracks: AudioTrackStat[] = [];
const videoTracks: VideoTrackStat[] = [];
let totalPacketsReceived = 0;
let totalPacketsLost = 0;
const seenKeys = new Set<string>();
for (const pc of pcs) {
// Process senders (outbound)
for (const sender of pc.getSenders()) {
if (!sender.track) continue;
const identity = identityMap.get(sender.track.id);
if (!identity) continue;
let senderStats: RTCStatsReport;
try {
senderStats = await sender.getStats();
} catch {
continue;
}
// Build per-sender codec map
const senderCodecMap = new Map<string, string>();
senderStats.forEach((report: any) => {
if (report.type === 'codec') {
senderCodecMap.set(report.id, report.mimeType?.split('/')[1] ?? report.mimeType ?? '');
}
});
senderStats.forEach((report: any) => {
if (report.type !== 'outbound-rtp') return;
const kind = reportKind(report);
if (!kind) return;
const ssrcKey = `out-${report.ssrc}`;
if (seenKeys.has(ssrcKey)) return;
seenKeys.add(ssrcKey);
const prevEntry = prev.get(ssrcKey);
const deltaMs = prevEntry ? now - prevEntry.timestamp : 0;
const deltaSeconds = deltaMs / 1000;
// Delta bitrate
let bitrate = 0;
if (prevEntry && deltaMs > 0) {
bitrate = ((report.bytesSent - prevEntry.bytes) * 8) / deltaMs; // kbps
}
// Codec: try sender-scoped first, then global fallback
let codec: string | null = null;
if (report.codecId) {
codec = senderCodecMap.get(report.codecId) ?? globalCodecMap.get(report.codecId) ?? null;
}
if (kind === 'audio') {
prev.set(ssrcKey, {
bytes: report.bytesSent,
frames: 0,
timestamp: now,
packetsRecv: 0,
packetsLost: 0,
});
if (bitrate > 0) {
audioTracks.push({
key: ssrcKey,
direction: 'send',
source: identity.source,
participantName: null,
bitrate,
codec,
packetLoss: null,
jitter: null,
});
}
}
if (kind === 'video') {
const framesEncoded = report.framesEncoded ?? 0;
const prevFrames = prevEntry?.frames ?? 0;
const deltaFrames = framesEncoded - prevFrames;
const fps = (prevEntry && deltaSeconds > 0) ? Math.round(deltaFrames / deltaSeconds) : null;
let width: number | null = report.frameWidth > 0 ? report.frameWidth : null;
let height: number | null = report.frameHeight > 0 ? report.frameHeight : null;
// Safari fallback: resolution from MediaStreamTrack.getSettings()
const senderTrack = sender.track;
if (width === null && senderTrack && senderTrack.readyState === 'live') {
const settings = senderTrack.getSettings();
if (settings.width && settings.height) {
width = settings.width;
height = settings.height;
}
}
prev.set(ssrcKey, {
bytes: report.bytesSent,
frames: framesEncoded,
timestamp: now,
packetsRecv: 0,
packetsLost: 0,
});
if (bitrate > 0 || (width !== null && height !== null)) {
videoTracks.push({
key: ssrcKey,
direction: 'send',
source: identity.source,
participantName: null,
bitrate,
codec,
width,
height,
fps,
qualityLimitation: report.qualityLimitationReason ?? null,
simulcastLayer: null,
});
}
}
});
}
// Process receivers (inbound)
for (const receiver of pc.getReceivers()) {
if (!receiver.track) continue;
const identity = identityMap.get(receiver.track.id);
if (!identity) continue;
let receiverStats: RTCStatsReport;
try {
receiverStats = await receiver.getStats();
} catch {
continue;
}
// Build per-receiver codec map
const recvCodecMap = new Map<string, string>();
receiverStats.forEach((report: any) => {
if (report.type === 'codec') {
recvCodecMap.set(report.id, report.mimeType?.split('/')[1] ?? report.mimeType ?? '');
}
});
receiverStats.forEach((report: any) => {
if (report.type !== 'inbound-rtp') return;
const kind = reportKind(report);
if (!kind) return;
const ssrcKey = `in-${report.ssrc}`;
if (seenKeys.has(ssrcKey)) return;
seenKeys.add(ssrcKey);
const prevEntry = prev.get(ssrcKey);
const deltaMs = prevEntry ? now - prevEntry.timestamp : 0;
const deltaSeconds = deltaMs / 1000;
// Delta bitrate
let bitrate = 0;
if (prevEntry && deltaMs > 0) {
bitrate = ((report.bytesReceived - prevEntry.bytes) * 8) / deltaMs; // kbps
}
// Packet loss
const packetsRecv = report.packetsReceived ?? 0;
const packetsLost = report.packetsLost ?? 0;
totalPacketsReceived += packetsRecv;
totalPacketsLost += packetsLost;
let perTrackLoss: number | null = null;
if (prevEntry) {
const deltaRecv = packetsRecv - prevEntry.packetsRecv;
const deltaLost = packetsLost - prevEntry.packetsLost;
const deltaTotal = deltaRecv + deltaLost;
if (deltaTotal > 0) {
perTrackLoss = (deltaLost / deltaTotal) * 100;
}
}
// Jitter
const jitter = report.jitter != null ? Math.round(report.jitter * 1000) : null;
// Codec
let codec: string | null = null;
if (report.codecId) {
codec = recvCodecMap.get(report.codecId) ?? globalCodecMap.get(report.codecId) ?? null;
}
if (kind === 'audio') {
prev.set(ssrcKey, {
bytes: report.bytesReceived,
frames: 0,
timestamp: now,
packetsRecv: packetsRecv,
packetsLost: packetsLost,
});
// Set network jitter from first inbound audio
if (network.jitter === null && jitter !== null) {
network.jitter = jitter;
}
if (bitrate > 0) {
audioTracks.push({
key: ssrcKey,
direction: 'recv',
source: identity.source,
participantName: identity.participantName,
bitrate,
codec,
packetLoss: perTrackLoss,
jitter,
});
}
}
if (kind === 'video') {
const framesDecoded = report.framesDecoded ?? 0;
const prevFrames = prevEntry?.frames ?? 0;
const deltaFrames = framesDecoded - prevFrames;
const fps = (prevEntry && deltaSeconds > 0) ? Math.round(deltaFrames / deltaSeconds) : null;
const width: number | null = report.frameWidth > 0 ? report.frameWidth : null;
const height: number | null = report.frameHeight > 0 ? report.frameHeight : null;
prev.set(ssrcKey, {
bytes: report.bytesReceived,
frames: framesDecoded,
timestamp: now,
packetsRecv: packetsRecv,
packetsLost: packetsLost,
});
if (bitrate > 0 || (width !== null && height !== null)) {
videoTracks.push({
key: ssrcKey,
direction: 'recv',
source: identity.source,
participantName: identity.participantName,
bitrate,
codec,
width,
height,
fps,
qualityLimitation: null,
simulcastLayer: inferSimulcastLayer(width),
});
}
}
});
}
}
// ── Step E: Aggregate packet loss ──
const totalPackets = totalPacketsReceived + totalPacketsLost;
if (totalPackets > 0) {
network.packetLoss = (totalPacketsLost / totalPackets) * 100;
}
// ── Step F: Cleanup stale prevSample entries ──
for (const key of prev.keys()) {
if (!seenKeys.has(key)) {
prev.delete(key);
}
}
setSnapshot({ network, audioTracks, videoTracks });
};
poll();
const interval = setInterval(poll, 1000);
return () => clearInterval(interval);
}, [enabled]);
return snapshot;
}