voice-poc: WebRTC voice + screen share + spatial audio with configurable STUN/TURN

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# gibbz voice — POC
Discord-clone proof of concept: peer-to-peer WebRTC voice chat + screen sharing
with position-based spatial audio and pluggable STUN/TURN.
Run (Node 18+, only dep is `ws`):
```sh
npm install
PORT=8081 npm start
# open http://localhost:8081, click a voice channel, allow mic
```
## What works
- Mesh WebRTC voice (perfect negotiation; lowest peer id initiates)
- Screen share with audio (mic is spatialized, screen audio plays direct)
- Spatial audio: drag your avatar on the plane; remote mics run through a
`PannerNode` (HRTF, inverse distance). Positions sync over signaling.
- Custom STUN/TURN: gear icon → JSON override in `localStorage`, applied on
next join. Server default comes from env (below).
- Mute (M), deafen (D), per-peer volume, speaking indicators.
## ICE configuration (server side)
| Env var | Meaning |
|---|---|
| `STUN_URLS` | comma-separated `stun:` urls (Google defaults) |
| `TURN_URLS` | comma-separated `turn:`/`turns:` urls |
| `TURN_USERNAME` / `TURN_CREDENTIAL` | static TURN creds |
| `ICE_SERVERS_JSON` | full `{"iceServers":[...]}` override, wins over the above |
| `PORT` / `HOST` | listen address (default 8081 / 0.0.0.0) |
Example with coturn:
```sh
TURN_URLS='turn:turn.example.com:3478?transport=udp,turns:turn.example.com:5349' \
TURN_USERNAME=mats TURN_CREDENTIAL=secret npm start
```
## POC shortcuts (productionize later)
- No auth, no reconnection, rooms are in-memory, signaling is unencrypted ws
behind the preview ingress (use wss/TLS in front for real deploys).
- No media server: N² mesh — fine for small rooms, needs SFU (mediasoup/livekit)
beyond ~6–8 participants.
- Text channels are decorative. No persistence, no rate limiting.
- Screen-share negotiation storms on join/leave are expected at small scale.
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{
"name": "gibbz-voice-poc",
"version": "0.1.0",
"lockfileVersion": 3,
"requires": true,
"packages": {
"": {
"name": "gibbz-voice-poc",
"version": "0.1.0",
"dependencies": {
"ws": "^8.18.0"
}
},
"node_modules/ws": {
"version": "8.21.3",
"resolved": "https://registry.npmjs.org/ws/-/ws-8.21.3.tgz",
"integrity": "sha512-201TZ/kPWxoPr/OKWjquZR1SWKXcvxdH+e1xrx89b3YbmzLMFCLfnaG1HFIgWzJOEWZ7MvpK++odZufgYR50Rw==",
"license": "MIT",
"engines": {
"node": ">=10.0.0"
},
"peerDependencies": {
"bufferutil": "^4.0.1",
"utf-8-validate": ">=5.0.2"
},
"peerDependenciesMeta": {
"bufferutil": {
"optional": true
},
"utf-8-validate": {
"optional": true
}
}
}
}
}
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{
"name": "gibbz-voice-poc",
"private": true,
"version": "0.1.0",
"description": "Discord-clone POC: WebRTC voice chat + screen sharing + spatial audio",
"scripts": {
"start": "node server.js"
},
"dependencies": {
"ws": "^8.18.0"
}
}
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/* gibbz voice POC — WebRTC mesh voice + screen share + spatial audio.
POC shortcuts: no auth, no reconnection, no text chat, single audio context. */
'use strict';
// ---------------------------------------------------------------------------
// state
// ---------------------------------------------------------------------------
const ROOM_UNITS = 100; // spatial plane is 0..100 x 0..100
const SPATIAL_SCALE = 0.12; // room units -> audio world units
const FALLBACK_ICE = { iceServers: [{ urls: 'stun:stun.l.google.com:19302' }] };
const LS_NAME = 'voicepoc.nick';
const LS_ICE = 'voicepoc.iceOverride';
const S = {
ws: null,
myId: null,
room: null,
name: localStorage.getItem(LS_NAME) || '',
peers: new Map(), // id -> peer record
micStream: null,
screenStream: null,
screenSenders: new Map(), // peerId -> [RTCRtpSender]
audioCtx: null,
me: { x: 50, y: 50 },
muted: false,
deafened: false,
iceServers: null, // resolved on join
sharing: false,
connecting: false,
};
window.__dbg = S; // POC debug handle
const $ = (sel) => document.querySelector(sel);
const els = {
stage: $('#stage'), screens: $('#screens'), tiles: $('#tiles'),
spatial: $('#spatial'), status: $('#voice-status'), nick: $('#nick'),
meAvatar: $('#me-avatar'), mic: $('#btn-mic'), deafen: $('#btn-deafen'),
};
// ---------------------------------------------------------------------------
// helpers
// ---------------------------------------------------------------------------
function toast(msg, kind = '') {
const t = document.createElement('div');
t.className = `toast ${kind}`;
t.textContent = msg;
$('#toasts').appendChild(t);
setTimeout(() => t.remove(), 5000);
}
const PEER_COLORS = ['#5865f2', '#23a55a', '#f0b232', '#eb459e', '#3ba55c', '#faa61a', '#e67e22', '#9b59b6'];
function colorFor(id) {
let h = 0;
for (const c of id) h = (h * 31 + c.charCodeAt(0)) >>> 0;
return PEER_COLORS[h % PEER_COLORS.length];
}
function setAvatar(el, name, id) {
el.style.background = colorFor(id);
el.textContent = (name || '?').slice(0, 1).toUpperCase();
}
function effectiveIce() {
const raw = localStorage.getItem(LS_ICE);
if (raw) {
try { return JSON.parse(raw); } catch { /* fall through */ }
}
return S.iceServers || FALLBACK_ICE;
}
// ---------------------------------------------------------------------------
// join / leave
// ---------------------------------------------------------------------------
async function joinVoice(room) {
if (S.room === room || S.connecting) return;
if (S.room) leaveVoice('switching channel');
S.connecting = true;
setStatus(`connecting to ${room}…`);
try {
S.iceServers = await fetchIce();
} catch {
toast('Could not load ICE config from server — using fallback STUN', 'warn');
}
// mic (join anyway without one — listen-only)
try {
S.micStream = await navigator.mediaDevices.getUserMedia({
audio: { echoCancellation: true, noiseSuppression: true, autoGainControl: true },
});
} catch {
S.micStream = null;
toast('No microphone available — joining in listen-only mode', 'warn');
}
els.mic.disabled = !S.micStream;
S.muted = false;
// audio context must exist after a user gesture — the channel click is one
if (!S.audioCtx) S.audioCtx = new AudioContext();
await S.audioCtx.resume().catch(() => {});
orientListener();
await openSignaling(room);
S.connecting = false;
}
async function fetchIce() {
const res = await fetch('/api/ice');
if (!res.ok) throw new Error(`ice ${res.status}`);
return res.json();
}
function leaveVoice(reason) {
if (!S.room && !S.ws) return;
if (S.sharing) stopScreenShare(true);
for (const peer of S.peers.values()) destroyPeer(peer);
S.peers.clear();
if (S.ws) { try { S.ws.close(); } catch {} S.ws = null; }
if (S.micStream) { S.micStream.getTracks().forEach((t) => t.stop()); S.micStream = null; }
els.mic.disabled = false;
updateMicButton();
document.querySelectorAll('.channel.voice').forEach((c) => c.classList.remove('active'));
S.room = null;
S.myId = null;
S.muted = false;
S.deafened = false;
updateDeafenButton();
renderAll();
setStatus(reason || 'not connected');
}
function setStatus(text) { els.status.textContent = text; }
// ---------------------------------------------------------------------------
// signaling
// ---------------------------------------------------------------------------
function openSignaling(room) {
return new Promise((resolve, reject) => {
const proto = location.protocol === 'https:' ? 'wss' : 'ws';
const url = `${proto}://${location.host}/ws?room=${encodeURIComponent(room)}&name=${encodeURIComponent(S.name)}`;
const ws = new WebSocket(url);
S.ws = ws;
ws.onerror = () => { S.connecting = false; setStatus('connection failed'); reject(new Error('websocket failed')); };
ws.onmessage = (ev) => {
let msg;
try { msg = JSON.parse(ev.data); } catch { return; }
try { handleSignal(msg); } catch (err) { console.error('signal handler error', msg.type, err); }
};
ws.onclose = () => {
if (S.ws === ws && S.room) {
toast('Signaling connection lost', 'error');
leaveVoice('disconnected');
}
};
ws.onopen = () => resolve();
});
}
function send(msg) {
if (S.ws && S.ws.readyState === 1) S.ws.send(JSON.stringify(msg));
}
function handleSignal(msg) {
switch (msg.type) {
case 'hello': {
S.myId = msg.id;
for (const p of msg.peers) {
S.peers.set(p.id, makePeerRecord(p));
// deterministic initiator: lower id offers (no glare storm on join)
ensurePC(S.peers.get(p.id), S.myId < p.id);
}
sendMyPos(true);
renderAll();
setStatus(`voice connected — ${msg.peers.length + 1} in ${msg.room}`);
toast(`Joined ${msg.room}`, 'ok');
break;
}
case 'joined':
S.peers.set(msg.peer.id, makePeerRecord(msg.peer));
renderAll();
toast(`${msg.peer.name} joined`, 'ok');
break;
case 'left': {
const peer = S.peers.get(msg.id);
if (peer) {
destroyPeer(peer);
S.peers.delete(msg.id);
renderAll();
toast(`${peer.name} left`);
}
break;
}
case 'pos': {
const peer = S.peers.get(msg.from);
if (peer) { peer.x = msg.x; peer.y = msg.y; updatePanner(peer); }
break;
}
case 'state': {
const peer = S.peers.get(msg.from);
if (peer) { peer.state = msg.state; renderTiles(); }
break;
}
case 'offer':
case 'answer': {
const peer = ensurePC(S.peers.get(msg.from) || createOrphanPeer(msg.from), false);
onDescription(peer, msg.sdp).catch((e) => console.error('description failed', e));
break;
}
case 'candidate': {
const peer = S.peers.get(msg.from);
if (!peer || !peer.pc) return; // candidates only after description path created pc
onCandidate(peer, msg.candidate).catch((e) => console.error('candidate failed', e));
break;
}
default:
break;
}
}
// ---------------------------------------------------------------------------
// peer records + WebRTC (perfect negotiation)
// ---------------------------------------------------------------------------
function makePeerRecord(p) {
return {
id: p.id, name: p.name, x: p.x, y: p.y,
state: p.state || { muted: false, deafened: false, sharing: false },
pc: null, polite: false, makingOffer: false, ignoreOffer: false,
pendingCandidates: [], micStream: null, screenStream: null,
gain: null, panner: null, analyser: null, vol: 1, speaking: false,
els: {},
};
}
function createOrphanPeer(id) {
const p = makePeerRecord({ id, name: 'peer-' + id.slice(0, 4), x: 50, y: 50 });
S.peers.set(id, p);
return p;
}
function ensurePC(peer, initiator) {
if (peer.pc) return peer;
const pc = new RTCPeerConnection({ ...effectiveIce(), iceCandidatePoolSize: 4 });
peer.pc = pc;
peer.polite = S.myId > peer.id;
pc.onnegotiationneeded = async () => {
try {
peer.makingOffer = true;
await pc.setLocalDescription();
send({ type: 'offer', to: peer.id, sdp: pc.localDescription });
} catch (err) {
console.error('negotiation failed', err);
} finally {
peer.makingOffer = false;
}
};
pc.onicecandidate = ({ candidate }) => {
if (candidate) send({ type: 'candidate', to: peer.id, candidate });
};
pc.onconnectionstatechange = () => {
renderTiles();
if (pc.connectionState === 'failed') {
console.warn('peer connection failed, restarting ICE', peer.id);
try { pc.restartIce(); } catch {}
}
};
pc.ontrack = (ev) => onRemoteTrack(peer, ev);
// send my mic; if I have none, ask to receive theirs
if (S.micStream) {
for (const track of S.micStream.getAudioTracks()) pc.addTrack(track, S.micStream);
} else {
pc.addTransceiver('audio', { direction: 'recvonly' });
}
if (initiator) pc.onnegotiationneeded();
return peer;
}
async function onDescription(peer, desc) {
const pc = peer.pc;
const collision = desc.type === 'offer' && (peer.makingOffer || pc.signalingState !== 'stable');
peer.ignoreOffer = !peer.polite && collision;
if (peer.ignoreOffer) return; // impolite side ignores the rival offer
await pc.setRemoteDescription(desc); // modern browsers roll back implicitly when polite
for (const c of peer.pendingCandidates.splice(0)) {
await pc.addIceCandidate(c).catch((e) => console.warn('buffered candidate failed', e));
}
if (desc.type === 'offer') {
await pc.setLocalDescription();
send({ type: 'answer', to: peer.id, sdp: pc.localDescription });
}
}
async function onCandidate(peer, candidate) {
if (peer.ignoreOffer) return;
if (!peer.pc.remoteDescription) {
peer.pendingCandidates.push(candidate);
return;
}
await peer.pc.addIceCandidate(candidate);
}
function destroyPeer(peer) {
if (peer.pc) { try { peer.pc.close(); } catch {} peer.pc = null; }
detachSpatial(peer);
peer.micStream = null;
peer.screenStream = null;
peer.els = {};
renderScreens();
}
// ---------------------------------------------------------------------------
// remote media: mic -> spatial chain, screen -> big video + direct audio
// ---------------------------------------------------------------------------
function onRemoteTrack(peer, ev) {
const stream = ev.streams[0];
if (!stream) return;
if (stream.getVideoTracks().length > 0) {
peer.screenStream = stream;
stream.getVideoTracks().forEach((t) => {
t.addEventListener('ended', () => {
if (peer.screenStream === stream) { peer.screenStream = null; renderScreens(); }
});
});
renderScreens();
console.log('remote screen share from', peer.name);
} else {
peer.micStream = stream;
attachSpatial(peer, stream);
console.log('remote mic from', peer.name);
}
renderTiles();
}
function attachSpatial(peer, stream) {
const ctx = S.audioCtx;
if (!ctx || peer.panner) return;
const src = ctx.createMediaStreamSource(stream);
const panner = ctx.createPanner();
panner.panningModel = 'HRTF';
panner.distanceModel = 'inverse';
panner.refDistance = 4;
panner.rolloffFactor = 1.4;
panner.maxDistance = 200;
const gain = ctx.createGain();
gain.gain.value = S.deafened ? 0 : peer.vol;
const analyser = ctx.createAnalyser();
analyser.fftSize = 256;
src.connect(panner).connect(gain).connect(analyser).connect(ctx.destination);
Object.assign(peer, { panner, gain, analyser });
updatePanner(peer);
}
function detachSpatial(peer) {
if (peer.gain) { try { peer.gain.disconnect(); } catch {} }
if (peer.panner) { try { peer.panner.disconnect(); } catch {} }
peer.panner = peer.gain = peer.analyser = null;
}
function updatePanner(peer) {
if (!peer.panner) return;
const x = (peer.x - S.me.x) * SPATIAL_SCALE;
const z = (peer.y - S.me.y) * SPATIAL_SCALE; // screen-down = behind listener
const p = peer.panner;
if (p.positionX) {
p.positionX.value = x; p.positionY.value = 0; p.positionZ.value = z;
} else { // old Safari
p.setPosition(x, 0, z);
}
}
function orientListener() {
const l = S.audioCtx && S.audioCtx.listener;
if (!l) return;
if (l.forwardX) {
l.forwardX.value = 0; l.forwardY.value = 0; l.forwardZ.value = -1;
l.upX.value = 0; l.upY.value = 1; l.upZ.value = 0;
} else {
l.setOrientation(0, 0, -1, 0, 1, 0);
}
}
// ---------------------------------------------------------------------------
// screen share (local)
// ---------------------------------------------------------------------------
async function startScreenShare() {
if (S.sharing || !S.room) return;
let stream;
try {
stream = await navigator.mediaDevices.getDisplayMedia({
video: { frameRate: 30 }, audio: true,
});
} catch {
return; // user cancelled
}
S.screenStream = stream;
S.sharing = true;
send({ type: 'state', state: { muted: S.muted, deafened: S.deafened, sharing: true } });
for (const peer of S.peers.values()) addScreenToPeer(peer);
stream.getVideoTracks()[0].addEventListener('ended', () => stopScreenShare());
renderScreens();
renderTiles();
toast('You are sharing your screen', 'ok');
}
function addScreenToPeer(peer) {
if (!peer.pc || !S.screenStream) return;
const senders = [];
for (const track of S.screenStream.getTracks()) {
senders.push(peer.pc.addTrack(track, S.screenStream));
}
S.screenSenders.set(peer.id, senders); // renegotiation fires automatically
}
function stopScreenShare(silent) {
if (!S.sharing) return;
S.sharing = false;
for (const [peerId, senders] of S.screenSenders) {
const peer = S.peers.get(peerId);
if (peer && peer.pc) for (const s of senders) { try { peer.pc.removeTrack(s); } catch {} }
}
S.screenSenders.clear();
if (S.screenStream) { S.screenStream.getTracks().forEach((t) => t.stop()); S.screenStream = null; }
send({ type: 'state', state: { muted: S.muted, deafened: S.deafened, sharing: false } });
renderScreens();
renderTiles();
if (!silent) toast('Screen share stopped');
}
// ---------------------------------------------------------------------------
// position sync
// ---------------------------------------------------------------------------
let lastPosSend = 0;
function sendMyPos(force) {
const now = performance.now();
if (!force && now - lastPosSend < 60) return;
lastPosSend = now;
send({ type: 'pos', x: S.me.x, y: S.me.y });
for (const peer of S.peers.values()) updatePanner(peer);
}
// ---------------------------------------------------------------------------
// speaking detection (local meter + per-peer analyser RMS)
// ---------------------------------------------------------------------------
const meterBuf = new Uint8Array(256);
function rms(analyser) {
analyser.getByteTimeDomainData(meterBuf);
let sum = 0;
for (let i = 0; i < meterBuf.length; i++) {
const v = (meterBuf[i] - 128) / 128;
sum += v * v;
}
return Math.sqrt(sum / meterBuf.length);
}
let localAnalyser = null;
setInterval(() => {
if (!S.audioCtx) return;
if (S.micStream && !localAnalyser) {
const src = S.audioCtx.createMediaStreamSource(S.micStream);
localAnalyser = S.audioCtx.createAnalyser();
localAnalyser.fftSize = 256;
src.connect(localAnalyser); // tap only — not connected to destination (no echo)
}
const meSpeaking = localAnalyser && !S.muted && rms(localAnalyser) > 0.04;
els.meAvatar.classList.toggle('speaking', !!meSpeaking);
let changed = false;
for (const peer of S.peers.values()) {
const speaking = !!(peer.analyser && !S.deafened && rms(peer.analyser) > 0.03);
if (speaking !== peer.speaking) { peer.speaking = speaking; changed = true; }
}
if (changed) renderTiles();
}, 150);
// ---------------------------------------------------------------------------
// rendering
// ---------------------------------------------------------------------------
function renderAll() {
renderTiles();
renderScreens();
renderStageEmpty();
renderChannelCounts();
}
function renderStageEmpty() {
const anyone = S.peers.size > 0 || S.sharing || S.room;
els.stage.classList.toggle('empty', !anyone);
}
function renderChannelCounts() {
// POC: server does not expose cross-room rosters; count is local-room only
const counts = {};
for (const p of S.peers.values()) counts[S.room] = (counts[S.room] || 0) + 1;
document.querySelectorAll('[data-room-count]').forEach((el) => {
const n = counts[el.dataset.roomCount] || 0;
el.textContent = n ? `${n + (el.dataset.roomCount === S.room ? 1 : 0)}` : '';
});
}
function renderTiles() {
els.tiles.innerHTML = '';
for (const peer of S.peers.values()) {
const tile = document.createElement('div');
tile.className = 'tile' + (peer.speaking ? ' speaking' : '');
const av = document.createElement('div');
av.className = 'avatar';
setAvatar(av, peer.name, peer.id);
const name = document.createElement('div');
name.className = 'name';
name.textContent = peer.name;
const sub = document.createElement('div');
sub.className = 'sub';
const bits = [];
if (!peer.pc) bits.push('<span class="connecting">signaling…</span>');
else if (peer.pc.connectionState !== 'connected') bits.push(`<span class="connecting">${peer.pc.connectionState}…</span>`);
else if (!peer.micStream && !peer.state.muted) bits.push('<span class="connecting">no audio yet</span>');
if (peer.state.muted) bits.push('<span class="mute-tag">muted</span>');
if (peer.state.sharing) bits.push('<span class="share-tag">sharing</span>');
sub.innerHTML = bits.join(' ') || 'connected';
const vol = document.createElement('input');
vol.type = 'range'; vol.min = 0; vol.max = 2; vol.step = 0.05; vol.value = peer.vol;
vol.title = 'Volume';
vol.oninput = () => {
peer.vol = Number(vol.value);
if (peer.gain && !S.deafened) peer.gain.gain.value = peer.vol;
};
tile.append(av, name, sub, vol);
els.tiles.appendChild(tile);
}
renderStageEmpty();
}
function renderScreens() {
els.screens.innerHTML = '';
const shares = [];
if (S.sharing && S.screenStream) shares.push({ name: `${S.name} (you)`, stream: S.screenStream });
for (const peer of S.peers.values()) {
if (peer.screenStream) shares.push({ name: peer.name, stream: peer.screenStream });
}
for (const share of shares) {
const card = document.createElement('div');
card.className = 'screen-card';
const video = document.createElement('video');
video.autoplay = true;
video.playsInline = true;
video.muted = false;
video.srcObject = share.stream;
video.play().catch(() => {});
const label = document.createElement('div');
label.className = 'label';
label.innerHTML = '<span class="live">&#9679;</span>';
label.appendChild(document.createTextNode(share.name));
card.append(video, label);
els.screens.appendChild(card);
}
}
// ---------------------------------------------------------------------------
// spatial canvas
// ---------------------------------------------------------------------------
const ctx2d = els.spatial.getContext('2d');
let dragging = null;
function spatialMetrics() {
const r = els.spatial.getBoundingClientRect();
const dpr = window.devicePixelRatio || 1;
if (els.spatial.width !== r.width * dpr) {
els.spatial.width = r.width * dpr;
els.spatial.height = r.height * dpr;
}
ctx2d.setTransform(dpr, 0, 0, dpr, 0, 0);
const pad = 30;
return { w: r.width, h: r.height, pad,
toPx: (x, y) => [pad + (x / ROOM_UNITS) * (r.width - 2 * pad),
pad + (y / ROOM_UNITS) * (r.height - 2 * pad)],
fromPx: (px, py) => [((px - pad) / (r.width - 2 * pad)) * ROOM_UNITS,
((py - pad) / (r.height - 2 * pad)) * ROOM_UNITS] };
}
function drawSpatial() {
const m = spatialMetrics();
ctx2d.clearRect(0, 0, m.w, m.h);
// grid
ctx2d.strokeStyle = 'rgba(255,255,255,.05)';
ctx2d.lineWidth = 1;
for (let i = 0; i <= ROOM_UNITS; i += 10) {
const [gx, gy] = m.toPx(i, i);
ctx2d.beginPath(); ctx2d.moveTo(gx, m.toPx(0, 0)[1]); ctx2d.lineTo(gx, m.toPx(0, 100)[1]); ctx2d.stroke();
ctx2d.beginPath(); ctx2d.moveTo(m.toPx(0, 0)[0], gy); ctx2d.lineTo(m.toPx(100, 0)[0], gy); ctx2d.stroke();
}
// audible range around me (~gain 0.05 at 56 units with ref=4, rolloff=1.4)
const [mx, my] = m.toPx(S.me.x, S.me.y);
const rangeR = (56 / ROOM_UNITS) * (m.w - 2 * m.pad);
ctx2d.strokeStyle = 'rgba(88,101,242,.35)';
ctx2d.setLineDash([5, 5]);
ctx2d.beginPath(); ctx2d.arc(mx, my, Math.max(0, Math.min(rangeR, m.h - 2 * m.pad)), 0, Math.PI * 2); ctx2d.stroke();
ctx2d.setLineDash([]);
// peers
for (const peer of S.peers.values()) drawAvatarDot(peer.name, peer.id, peer.x, peer.y, peer.speaking, peer.state.muted, false, m);
// me (draggable listener)
drawAvatarDot(S.name || 'me', S.myId || 'me', S.me.x, S.me.y, els.meAvatar.classList.contains('speaking'), S.muted, true, m);
if (!dragging) requestAnimationFrame(drawSpatial);
}
requestAnimationFrame(drawSpatial);
function drawAvatarDot(name, id, x, y, speaking, muted, isMe, m) {
const [px, py] = m.toPx(x, y);
const r = isMe ? 16 : 13;
ctx2d.beginPath();
ctx2d.arc(px, py, r, 0, Math.PI * 2);
ctx2d.fillStyle = colorFor(id);
ctx2d.fill();
if (speaking) {
ctx2d.strokeStyle = '#23a55a';
ctx2d.lineWidth = 3;
ctx2d.stroke();
}
if (muted) {
ctx2d.strokeStyle = '#f23f43';
ctx2d.lineWidth = 3;
ctx2d.beginPath();
ctx2d.moveTo(px - r, py + r);
ctx2d.lineTo(px + r, py - r);
ctx2d.stroke();
}
ctx2d.fillStyle = '#fff';
ctx2d.font = `bold ${Math.round(r)}px system-ui`;
ctx2d.textAlign = 'center';
ctx2d.textBaseline = 'middle';
ctx2d.fillText(name.slice(0, 1).toUpperCase(), px, py + 1);
ctx2d.font = '11px system-ui';
ctx2d.fillStyle = isMe ? '#b5bac1' : '#80848e';
ctx2d.fillText(name + (isMe ? ' (you)' : ''), px, py + r + 12);
}
els.spatial.addEventListener('pointerdown', (ev) => {
const m = spatialMetrics();
const rect = els.spatial.getBoundingClientRect();
const px = ev.clientX - rect.left, py = ev.clientY - rect.top;
const [ux, uy] = m.fromPx(px, py);
const d = Math.hypot(ux - S.me.x, uy - S.me.y);
if (d < 10) {
dragging = { dx: S.me.x - ux, dy: S.me.y - uy };
els.spatial.classList.add('dragging');
els.spatial.setPointerCapture(ev.pointerId);
}
});
els.spatial.addEventListener('pointermove', (ev) => {
if (!dragging) return;
const m = spatialMetrics();
const rect = els.spatial.getBoundingClientRect();
const [ux, uy] = m.fromPx(ev.clientX - rect.left, ev.clientY - rect.top);
S.me.x = Math.min(ROOM_UNITS, Math.max(0, ux + dragging.dx));
S.me.y = Math.min(ROOM_UNITS, Math.max(0, uy + dragging.dy));
sendMyPos();
});
els.spatial.addEventListener('pointerup', () => {
if (!dragging) return;
dragging = null;
els.spatial.classList.remove('dragging');
sendMyPos(true);
requestAnimationFrame(drawSpatial); // rAF loop stopped while dragging
});
// ---------------------------------------------------------------------------
// controls & wiring
// ---------------------------------------------------------------------------
function updateMicButton() {
els.mic.classList.toggle('off', S.muted || !S.micStream);
}
function updateDeafenButton() {
els.deafen.classList.toggle('off', S.deafened);
}
function sendState() {
send({ type: 'state', state: { muted: S.muted, deafened: S.deafened, sharing: S.sharing } });
}
function toggleMic() {
if (!S.micStream) return;
S.muted = !S.muted;
S.micStream.getAudioTracks().forEach((t) => (t.enabled = !S.muted));
updateMicButton();
sendState();
renderTiles();
}
function toggleDeafen() {
if (!S.audioCtx) return;
S.deafened = !S.deafened;
for (const peer of S.peers.values()) {
if (peer.gain) peer.gain.gain.value = S.deafened ? 0 : peer.vol;
}
updateDeafenButton();
sendState();
renderTiles();
}
els.mic.onclick = toggleMic;
els.deafen.onclick = toggleDeafen;
$('#btn-settings').onclick = openSettings;
els.nick.value = S.name;
els.nick.addEventListener('change', () => {
S.name = els.nick.value.trim() || `guest-${Math.random().toString(36).slice(2, 6)}`;
els.nick.value = S.name;
localStorage.setItem(LS_NAME, S.name);
setAvatar(els.meAvatar, S.name, S.myId || 'me');
});
if (!S.name) {
S.name = `guest-${Math.random().toString(36).slice(2, 6)}`;
els.nick.value = S.name;
localStorage.setItem(LS_NAME, S.name);
}
setAvatar(els.meAvatar, S.name, 'me');
document.querySelectorAll('.channel.voice').forEach((el) => {
el.onclick = () => {
if (S.room === el.dataset.room) return;
document.querySelectorAll('.channel.voice').forEach((c) => c.classList.remove('active'));
el.classList.add('active');
joinVoice(el.dataset.room).catch((e) => {
console.error(e);
toast(`Join failed: ${e.message}`, 'error');
leaveVoice('join failed');
});
};
});
document.querySelectorAll('.channel.text').forEach((el) => {
el.onclick = () => toast('POC: text chat is not implemented');
});
// spawn me somewhere spread out, not dead-center on top of others
(() => {
let h = 0;
for (const c of S.myId || S.name) h = (h * 33 + c.charCodeAt(0)) >>> 0;
const a = (h % 360) * (Math.PI / 180);
S.me.x = 50 + 20 * Math.cos(a);
S.me.y = 50 + 20 * Math.sin(a);
})();
window.addEventListener('keydown', (ev) => {
if (ev.target.tagName === 'INPUT' || ev.target.tagName === 'TEXTAREA') return;
if (ev.key === 'm') toggleMic();
if (ev.key === 'd') toggleDeafen();
});
window.addEventListener('beforeunload', () => { try { leaveVoice(); } catch {} });
// ---------------------------------------------------------------------------
// settings modal (custom STUN/TURN)
// ---------------------------------------------------------------------------
function openSettings() {
const override = localStorage.getItem(LS_ICE);
$('#override-enabled').checked = !!override;
const current = override ? JSON.parse(override) : effectiveIce();
$('#ice-json').value = JSON.stringify(current, null, 2);
fetchIce().then(
(server) => { $('#ice-server-default').textContent = JSON.stringify(server, null, 2); },
() => { $('#ice-server-default').textContent = '(unavailable)'; },
);
$('#modal-backdrop').classList.remove('hidden');
}
$('#ice-cancel').onclick = () => $('#modal-backdrop').classList.add('hidden');
$('#modal-backdrop').onclick = (ev) => {
if (ev.target === $('#modal-backdrop')) $('#modal-backdrop').classList.add('hidden');
};
$('#ice-reset').onclick = () => {
localStorage.removeItem(LS_ICE);
$('#override-enabled').checked = false;
fetchIce().then((server) => { $('#ice-json').value = JSON.stringify(server, null, 2); });
};
$('#ice-save').onclick = () => {
const enabled = $('#override-enabled').checked;
let parsed = null;
if (enabled) {
try {
parsed = JSON.parse($('#ice-json').value);
if (!Array.isArray(parsed.iceServers)) throw new Error('missing "iceServers" array');
} catch (err) {
toast(`Invalid ICE JSON: ${err.message}`, 'error');
return;
}
localStorage.setItem(LS_ICE, JSON.stringify(parsed));
} else {
localStorage.removeItem(LS_ICE);
}
$('#modal-backdrop').classList.add('hidden');
toast(enabled ? 'Custom ICE saved — rejoin to apply' : 'Reverted to server ICE — rejoin to apply', 'ok');
};
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<!doctype html>
<html lang="en">
<head>
<meta charset="utf-8" />
<meta name="viewport" content="width=device-width, initial-scale=1" />
<title>gibbz voice — POC</title>
<link rel="stylesheet" href="style.css" />
</head>
<body>
<div id="app">
<!-- server rail -->
<nav id="rail">
<div class="rail-icon home" title="gibbz voice">G</div>
<div class="rail-sep"></div>
<div class="rail-icon" title="POC server">VP</div>
</nav>
<!-- channel sidebar -->
<aside id="sidebar">
<header id="server-name">gibbz voice <span class="poc-tag">POC</span></header>
<div class="channel-group-label">Text channels</div>
<div class="channel text" data-noop>#
general <span class="hint">not implemented</span></div>
<div class="channel-group-label">Voice channels</div>
<div class="channel voice" data-room="general">&#128266; General <span class="count" data-room-count="general"></span></div>
<div class="channel voice" data-room="gaming">&#128266; Gaming <span class="count" data-room-count="gaming"></span></div>
<div class="channel voice" data-room="lounge">&#128266; Lounge <span class="count" data-room-count="lounge"></span></div>
<footer id="user-panel">
<div class="me">
<div class="avatar" id="me-avatar">?</div>
<div class="me-meta">
<input id="nick" maxlength="24" spellcheck="false" title="Nickname" />
<span id="voice-status">not connected</span>
</div>
</div>
<div class="user-buttons">
<button id="btn-mic" class="ctl" title="Toggle mic (M)">&#127908;</button>
<button id="btn-deafen" class="ctl" title="Toggle deafen (D)">&#128064;</button>
<button id="btn-settings" class="ctl" title="Voice &amp; ICE settings">&#9881;&#65039;</button>
</div>
</footer>
</aside>
<!-- main stage -->
<main id="main">
<div id="stage">
<div id="screens"></div>
<div id="tiles"></div>
<div id="stage-empty">
<div class="big-icon">&#128266;</div>
<h2>Pick a voice channel to join</h2>
<p>Peer-to-peer WebRTC voice &amp; screen sharing. Drag avatars on the spatial plane to position who you hear.</p>
</div>
</div>
<div id="spatial-wrap">
<div class="spatial-label">
<span>SPATIAL AUDIO</span>
<span class="hint">drag <b>your</b> avatar &mdash; others hear you shift; you hear them relative to position</span>
</div>
<canvas id="spatial"></canvas>
</div>
</main>
</div>
<!-- settings modal -->
<div id="modal-backdrop" class="hidden">
<div id="settings-modal" role="dialog" aria-modal="true">
<h2>Voice &amp; ICE settings</h2>
<p class="hint">Overrides the server-provided ICE configuration (stored in <code>localStorage</code>, applied on next join).</p>
<label class="toggle-row">
<input type="checkbox" id="override-enabled" />
<span>Use custom STUN/TURN (JSON below)</span>
</label>
<textarea id="ice-json" rows="12" spellcheck="false"></textarea>
<div class="modal-actions">
<button id="ice-reset" class="ghost">Reset to server defaults</button>
<span class="spacer"></span>
<button id="ice-cancel" class="ghost">Cancel</button>
<button id="ice-save">Save</button>
</div>
<h3>Server defaults</h3>
<pre id="ice-server-default" class="hint"></pre>
</div>
</div>
<div id="toasts"></div>
<script src="app.js?v=4"></script>
</body>
</html>
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/* Discord-ish dark theme (POC) */
:root {
--bg-0: #1e1f22; /* rail */
--bg-1: #2b2d31; /* sidebar */
--bg-2: #313338; /* main */
--bg-3: #383a40; /* hover */
--bg-4: #404249;
--text-0: #f2f3f5;
--text-1: #b5bac1;
--text-2: #80848e;
--brand: #5865f2;
--green: #23a55a;
--red: #f23f43;
--yellow: #f0b232;
--radius: 8px;
}
* { box-sizing: border-box; margin: 0; }
html, body { height: 100%; }
body {
font: 14px/1.4 "gg sans", "Segoe UI", system-ui, -apple-system, sans-serif;
background: var(--bg-2);
color: var(--text-0);
overflow: hidden;
}
#app { display: flex; height: 100vh; }
/* rail */
#rail {
width: 68px; background: var(--bg-0); padding: 12px 0;
display: flex; flex-direction: column; align-items: center; gap: 8px; flex-shrink: 0;
}
.rail-icon {
width: 44px; height: 44px; border-radius: 50%; background: var(--bg-3);
display: grid; place-items: center; font-weight: 700; color: var(--text-1);
cursor: pointer; transition: border-radius .15s, background .15s;
}
.rail-icon:hover, .rail-icon.home { border-radius: 16px; background: var(--brand); color: #fff; }
.rail-sep { width: 28px; height: 2px; background: var(--bg-3); border-radius: 1px; }
/* sidebar */
#sidebar {
width: 250px; background: var(--bg-1); display: flex; flex-direction: column; flex-shrink: 0;
}
#server-name {
padding: 14px 16px; font-weight: 700; font-size: 15px;
border-bottom: 1px solid rgba(0,0,0,.25); box-shadow: 0 1px 0 rgba(0,0,0,.06);
}
.poc-tag {
font-size: 10px; background: var(--yellow); color: #000; border-radius: 4px;
padding: 1px 5px; vertical-align: 2px; margin-left: 6px; font-weight: 800;
}
.channel-group-label {
padding: 18px 8px 4px 16px; font-size: 11px; font-weight: 700;
letter-spacing: .4px; color: var(--text-2); text-transform: uppercase;
}
.channel {
margin: 1px 8px; padding: 7px 8px; border-radius: 6px; color: var(--text-1);
cursor: pointer; white-space: nowrap; overflow: hidden; text-overflow: ellipsis;
}
.channel:hover { background: var(--bg-3); color: var(--text-0); }
.channel.text { cursor: not-allowed; color: var(--text-2); }
.channel.text .hint { font-size: 10px; margin-left: 4px; }
.channel.voice.active { background: rgba(88,101,242,.25); color: var(--text-0); }
.channel .count { float: right; color: var(--text-2); font-size: 12px; }
#user-panel {
margin-top: auto; background: var(--bg-0); padding: 8px;
display: flex; align-items: center; gap: 8px;
}
.me { display: flex; align-items: center; gap: 8px; flex: 1; min-width: 0; }
.me-meta { display: flex; flex-direction: column; min-width: 0; }
#nick {
background: transparent; border: none; color: var(--text-0); font: inherit;
font-weight: 600; width: 100%; padding: 0; outline: none; border-bottom: 1px dashed transparent;
}
#nick:hover, #nick:focus { border-bottom-color: var(--text-2); }
#voice-status { font-size: 11px; color: var(--text-2); }
.user-buttons { display: flex; gap: 2px; }
.ctl {
background: transparent; border: none; color: var(--text-1); font-size: 16px;
width: 32px; height: 32px; border-radius: 6px; cursor: pointer; position: relative;
}
.ctl:hover { background: var(--bg-3); color: var(--text-0); }
.ctl.off { color: var(--red); }
.ctl.off::after {
content: ""; position: absolute; left: 7px; top: 15px; width: 18px; height: 2px;
background: var(--red); transform: rotate(-40deg); border-radius: 1px;
}
.ctl:disabled { opacity: .35; cursor: not-allowed; }
/* main */
#main { flex: 1; display: flex; flex-direction: column; min-width: 0; }
#stage {
flex: 1; display: flex; flex-direction: column; padding: 16px; gap: 16px;
overflow: auto; position: relative;
}
#stage-empty {
position: absolute; inset: 0; display: grid; place-content: center;
text-align: center; gap: 8px; color: var(--text-1); padding: 24px;
}
#stage-empty .big-icon { font-size: 56px; }
#stage-empty h2 { font-size: 20px; color: var(--text-0); }
#stage-empty p { max-width: 420px; color: var(--text-2); }
#stage.empty #stage-empty { display: grid; }
#stage:not(.empty) #stage-empty { display: none; }
#screens { display: flex; gap: 12px; flex-wrap: wrap; }
.screen-card {
position: relative; background: #000; border-radius: var(--radius); overflow: hidden;
flex: 1 1 480px; max-width: 100%; box-shadow: 0 8px 24px rgba(0,0,0,.4);
}
.screen-card video { width: 100%; display: block; max-height: 62vh; object-fit: contain; }
.screen-card .label {
position: absolute; left: 8px; bottom: 8px; background: rgba(0,0,0,.65);
padding: 3px 8px; border-radius: 5px; font-size: 12px; font-weight: 600;
}
.screen-card .label .live { color: var(--red); font-weight: 800; margin-right: 5px; }
#tiles { display: flex; gap: 10px; flex-wrap: wrap; }
.tile {
background: var(--bg-1); border-radius: var(--radius); padding: 12px; width: 150px;
display: flex; flex-direction: column; align-items: center; gap: 6px; position: relative;
border: 2px solid transparent;
}
.tile.speaking { border-color: var(--green); }
.tile .avatar { width: 56px; height: 56px; font-size: 24px; }
.tile .name { font-weight: 600; max-width: 100%; overflow: hidden; text-overflow: ellipsis; }
.tile .sub { font-size: 11px; color: var(--text-2); display: flex; gap: 6px; align-items: center; }
.tile .mute-tag { color: var(--red); }
.tile .share-tag { color: var(--yellow); }
.tile input[type=range] { width: 100%; accent-color: var(--brand); }
.tile .connecting { font-size: 11px; color: var(--yellow); }
.avatar {
width: 36px; height: 36px; border-radius: 50%; display: grid; place-items: center;
font-weight: 700; color: #fff; flex-shrink: 0; user-select: none;
}
/* spatial plane */
#spatial-wrap {
height: 34vh; min-height: 220px; background: var(--bg-1);
border-top: 1px solid rgba(0,0,0,.35); display: flex; flex-direction: column;
}
.spatial-label {
padding: 8px 16px 0; font-size: 11px; font-weight: 700; color: var(--text-2);
letter-spacing: .5px; display: flex; gap: 16px;
}
.spatial-label .hint { font-weight: 400; letter-spacing: 0; text-transform: none; }
#spatial { flex: 1; width: 100%; cursor: grab; touch-action: none; }
#spatial.dragging { cursor: grabbing; }
/* modal */
#modal-backdrop {
position: fixed; inset: 0; background: rgba(0,0,0,.7); display: grid;
place-items: center; z-index: 50;
}
#modal-backdrop.hidden { display: none; }
#settings-modal {
width: min(620px, 92vw); max-height: 90vh; overflow: auto;
background: var(--bg-1); border-radius: 8px; padding: 20px;
box-shadow: 0 12px 40px rgba(0,0,0,.6);
}
#settings-modal h2 { font-size: 18px; margin-bottom: 6px; }
#settings-modal h3 { font-size: 13px; margin: 16px 0 4px; color: var(--text-1); }
#settings-modal p { margin-bottom: 10px; }
#ice-json {
width: 100%; background: var(--bg-0); color: var(--text-0); border: 1px solid var(--bg-4);
border-radius: 6px; padding: 10px; font: 12px/1.5 ui-monospace, "Cascadia Code", monospace;
resize: vertical;
}
#ice-json:focus { outline: none; border-color: var(--brand); }
#ice-server-default {
background: var(--bg-0); padding: 8px 10px; border-radius: 6px;
font: 11px/1.5 ui-monospace, monospace; white-space: pre-wrap;
}
.toggle-row { display: flex; gap: 8px; align-items: center; margin-bottom: 8px; cursor: pointer; }
.toggle-row input { accent-color: var(--brand); width: 16px; height: 16px; }
.modal-actions { display: flex; gap: 8px; margin-top: 12px; align-items: center; }
.modal-actions .spacer { flex: 1; }
.modal-actions button {
padding: 8px 16px; border-radius: 6px; border: none; cursor: pointer;
font-weight: 600; font-size: 13px;
}
.modal-actions button:not(.ghost) { background: var(--brand); color: #fff; }
.modal-actions button.ghost { background: transparent; color: var(--text-1); }
.modal-actions button.ghost:hover { text-decoration: underline; }
/* toasts */
#toasts {
position: fixed; bottom: 16px; right: 16px; display: flex; flex-direction: column;
gap: 8px; z-index: 60; max-width: 380px;
}
.toast {
background: var(--bg-0); border-left: 3px solid var(--brand); border-radius: 6px;
padding: 10px 14px; box-shadow: 0 8px 20px rgba(0,0,0,.5); font-size: 13px;
animation: slide-in .18s ease-out;
}
.toast.error { border-left-color: var(--red); }
.toast.warn { border-left-color: var(--yellow); }
.toast.ok { border-left-color: var(--green); }
@keyframes slide-in { from { transform: translateX(30px); opacity: 0; } }
.hint { color: var(--text-2); font-size: 12px; }
code { font-family: ui-monospace, monospace; font-size: 12px; }
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// Minimal WebRTC signaling + static file server for the Discord-clone POC.
// POC shortcut: no auth, no persistence, in-memory rooms, no rate limiting.
const http = require('http');
const fs = require('fs');
const path = require('path');
const crypto = require('crypto');
const { WebSocketServer } = require('ws');
const PORT = Number(process.env.PORT || 8080);
const HOST = process.env.HOST || '0.0.0.0';
const PUBLIC_DIR = path.join(__dirname, 'public');
// ---------------------------------------------------------------------------
// ICE configuration: env-driven, full JSON override wins.
// STUN_URLS comma-separated stun: urls
// TURN_URLS comma-separated turn:/turns: urls
// TURN_USERNAME / TURN_CREDENTIAL static creds for all TURN urls
// ICE_SERVERS_JSON complete {"iceServers":[...]} override
// ---------------------------------------------------------------------------
function iceConfig() {
if (process.env.ICE_SERVERS_JSON) {
try {
const parsed = JSON.parse(process.env.ICE_SERVERS_JSON);
if (Array.isArray(parsed.iceServers)) return parsed;
console.error('ICE_SERVERS_JSON missing iceServers array, falling back to env vars');
} catch (err) {
console.error('ICE_SERVERS_JSON invalid JSON:', err.message);
}
}
const urls = (s) => (s || '').split(',').map((x) => x.trim()).filter(Boolean);
const iceServers = urls(process.env.STUN_URLS || 'stun:stun.l.google.com:19302,stun:stun1.l.google.com:19302')
.map((u) => ({ urls: u }));
const turnUrls = urls(process.env.TURN_URLS);
if (turnUrls.length) {
iceServers.push({
urls: turnUrls,
username: process.env.TURN_USERNAME || '',
credential: process.env.TURN_CREDENTIAL || process.env.TURN_PASSWORD || '',
});
}
return { iceServers };
}
// ---------------------------------------------------------------------------
// Static files
// ---------------------------------------------------------------------------
const MIME = {
'.html': 'text/html; charset=utf-8',
'.js': 'text/javascript; charset=utf-8',
'.css': 'text/css; charset=utf-8',
'.json': 'application/json',
'.svg': 'image/svg+xml',
'.png': 'image/png',
'.ico': 'image/x-icon',
};
function serveStatic(req, res) {
const urlPath = decodeURIComponent(new URL(req.url, 'http://x').pathname);
let rel = urlPath === '/' ? '/index.html' : urlPath;
const file = path.normalize(path.join(PUBLIC_DIR, rel));
if (!file.startsWith(PUBLIC_DIR)) {
res.writeHead(403).end('forbidden');
return;
}
fs.readFile(file, (err, data) => {
if (err) {
res.writeHead(404, { 'Content-Type': 'text/plain' }).end('not found');
return;
}
res.writeHead(200, { 'Content-Type': MIME[path.extname(file)] || 'application/octet-stream', 'Cache-Control': 'no-cache' });
res.end(data);
});
}
const server = http.createServer((req, res) => {
if (req.url.startsWith('/api/ice')) {
res.writeHead(200, { 'Content-Type': 'application/json' });
res.end(JSON.stringify(iceConfig()));
return;
}
serveStatic(req, res);
});
// ---------------------------------------------------------------------------
// Signaling
// client -> server: {type: offer|answer|candidate, to} {type: pos|state}
// server -> client: {type: hello, id, peers} {type: joined|left, ...}
// relayed messages get "from" stamped
// ---------------------------------------------------------------------------
const rooms = new Map(); // roomId -> Map(peerId -> client)
const wss = new WebSocketServer({ server, path: '/ws' });
function roomPeers(roomId) {
let room = rooms.get(roomId);
if (!room) {
room = new Map();
rooms.set(roomId, room);
}
return room;
}
function broadcast(room, msg, exceptId) {
const data = JSON.stringify(msg);
for (const [id, client] of room) {
if (id !== exceptId && client.socket.readyState === 1) client.socket.send(data);
}
}
wss.on('connection', (socket, req) => {
const q = new URL(req.url, 'http://x').searchParams;
const roomId = (q.get('room') || 'general').slice(0, 64);
const name = (q.get('name') || 'anon').slice(0, 32);
const id = crypto.randomBytes(4).toString('hex');
const room = roomPeers(roomId);
const client = { socket, id, name, x: 50, y: 50, state: { muted: false, deafened: false, sharing: false } };
room.set(id, client);
const send = (msg) => {
if (socket.readyState === 1) socket.send(JSON.stringify(msg));
};
send({ type: 'hello', id, room: roomId, peers: [...room.values()].filter((p) => p.id !== id).map(snapshot) });
broadcast(room, { type: 'joined', peer: snapshot(client) }, id);
console.log(`[signaling] ${name} (${id}) joined #${roomId} — ${room.size} in room`);
socket.on('message', (raw) => {
let msg;
try {
msg = JSON.parse(raw.toString());
} catch {
return;
}
if (!msg || typeof msg.type !== 'string') return;
switch (msg.type) {
case 'pos': {
const x = Number(msg.x), y = Number(msg.y);
if (Number.isFinite(x) && Number.isFinite(y)) {
client.x = Math.min(100, Math.max(0, x));
client.y = Math.min(100, Math.max(0, y));
broadcast(room, { type: 'pos', from: id, x: client.x, y: client.y }, id);
}
break;
}
case 'state': {
client.state = {
muted: !!msg.state?.muted,
deafened: !!msg.state?.deafened,
sharing: !!msg.state?.sharing,
};
broadcast(room, { type: 'state', from: id, state: client.state }, id);
break;
}
case 'offer':
case 'answer':
case 'candidate': {
if (!msg.to || !room.has(msg.to)) return;
const target = room.get(msg.to);
if (target.socket.readyState === 1) {
const { to: _to, ...rest } = msg;
target.socket.send(JSON.stringify({ ...rest, from: id }));
}
break;
}
default:
break; // ignore unknown types — forward compat
}
});
socket.on('close', () => {
room.delete(id);
if (room.size === 0) rooms.delete(roomId);
else broadcast(room, { type: 'left', id });
console.log(`[signaling] ${name} (${id}) left #${roomId} — ${room.size} in room`);
});
});
function snapshot(c) {
return { id: c.id, name: c.name, x: c.x, y: c.y, state: c.state };
}
// heartbeat: drop dead sockets
const interval = setInterval(() => {
for (const room of rooms.values()) {
for (const [, client] of room) {
if (client.socket.readyState === 1) {
client.socket.ping();
}
}
}
}, 30000);
wss.on('close', () => clearInterval(interval));
server.listen(PORT, HOST, () => {
const ice = iceConfig();
console.log(`voice-poc listening on http://${HOST}:${PORT}`);
console.log(`ICE servers: ${JSON.stringify(ice.iceServers)}`);
});