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fix(chat): preserve mixed-version compatibility

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This commit is contained in:
Timo
2026-07-26 01:02:20 +02:00
parent 17c3ea295a
commit 77790a279c
26 changed files with 236 additions and 35 deletions
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server/index.js
+38 -2
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@@ -174,7 +174,26 @@ const HOST_ONLY_GATED_EVENTS = new Set([
// Features this relay supports, advertised to clients in ROOM_DATA so they can
// enable matching UI/behavior only when the server actually backs it. Append a
// flag here when a new server-gated feature ships (e.g. co-host promotion).
const SERVER_CAPABILITIES = [CAPABILITIES.HOST_CONTROL, CAPABILITIES.CO_HOST, CAPABILITIES.CHAT];
const SERVER_CAPABILITIES = [
CAPABILITIES.HOST_CONTROL,
CAPABILITIES.CO_HOST,
CAPABILITIES.CHAT,
CAPABILITIES.CHAT_V1
];
function normalizeClientCapabilities(value) {
if (!Array.isArray(value)) return [];
return [...new Set(value.slice(0, 16)
.filter(capability => typeof capability === 'string')
.map(capability => capability.substring(0, 32))
.filter(capability => capability === CAPABILITIES.CHAT_V1)
)];
}
function clientSupportsChat(socket) {
return Array.isArray(socket?.data?.clientCapabilities) &&
socket.data.clientCapabilities.includes(CAPABILITIES.CHAT_V1);
}
// M-4: minimum interval between CONTROL_MODE changes per room. Stops a rapidly
// toggling host from thrashing every guest's UI (locked/unlocked/locked...) and
@@ -356,6 +375,7 @@ io.on('connection', (socket) => {
const username = typeof payload.username === 'string' ? payload.username.substring(0, 30) : null;
const tabTitle = typeof payload.tabTitle === 'string' ? payload.tabTitle.substring(0, 100) : null;
const mediaTitle = typeof payload.mediaTitle === 'string' ? payload.mediaTitle.substring(0, 100) : null;
const clientCapabilities = normalizeClientCapabilities(payload.clientCapabilities);
if (!roomId || !peerId) return; // Guard: empty or invalid after sanitization
@@ -370,6 +390,7 @@ io.on('connection', (socket) => {
// Cleanup old room if re-joining
const oldMapping = socketToRoom.get(socket.id);
if (oldMapping && oldMapping.roomId === roomId && oldMapping.peerId === peerId) {
socket.data.clientCapabilities = clientCapabilities;
return; // Already in this room with same peerId, ignore to prevent spam
}
if (oldMapping && oldMapping.roomId !== roomId) {
@@ -493,6 +514,7 @@ io.on('connection', (socket) => {
}
socket.join(roomId);
socket.data.clientCapabilities = clientCapabilities;
room.peers.add(socket.id);
room.peerIds.set(socket.id, peerId);
room.peerData.set(socket.id, {
@@ -862,8 +884,22 @@ io.on('connection', (socket) => {
const envelope = createChatEnvelope(data, mapping.peerId);
if (!envelope) return;
// Transitional compatibility: the first chat beta did not announce
// clientCapabilities. Successfully sending a canonical chat frame is
// sufficient proof that this socket understands the v1 receive event.
if (!clientSupportsChat(socket)) {
socket.data.clientCapabilities = [
...(socket.data.clientCapabilities || []),
CAPABILITIES.CHAT_V1
];
}
room.lastActivity = Date.now();
io.to(mapping.roomId).emit(EVENTS.CHAT_MESSAGE, envelope);
for (const socketId of room.peers) {
const recipient = io.sockets.sockets.get(socketId);
if (clientSupportsChat(recipient)) {
recipient.emit(EVENTS.CHAT_MESSAGE, envelope);
}
}
} catch (err) {
log('ERROR', `CHAT_MESSAGE handler error: ${err.message}`);
}