perf: performance improvements 1

toju-app/src/app/infrastructure/realtime/peer-connection-manager/peer-connection.manager.ts

@@ -340,6 +340,12 @@ export class PeerConnectionManager {
       return false;
 
     try {
+      // Release the failed channel before adopting the replacement; otherwise
+      // its SCTP resources and handlers stay alive for the connection lifetime.
+      try {
+        expectedChannel.close();
+      } catch { /* channel may already be closed */ }
+
       const replacement = peerData.connection.createDataChannel(DATA_CHANNEL_LABEL, { ordered: true });
 
       peerData.dataChannel = replacement;

toju-app/src/app/infrastructure/realtime/peer-connection-manager/recovery/peer-recovery.spec.ts

@@ -5,7 +5,11 @@ import {
   PeerConnectionManagerContext,
   RecoveryHandlers
 } from '../shared';
-import { scheduleDataChannelRecovery } from './peer-recovery';
+import {
+  closeAllPeers,
+  removePeer,
+  scheduleDataChannelRecovery
+} from './peer-recovery';
 
 describe('peer recovery', () => {
   afterEach(() => {
@@ -13,6 +17,40 @@ describe('peer recovery', () => {
     vi.useRealTimers();
   });
 
+  it('removes every remote stream map entry for a removed peer, including camera streams', () => {
+    const channel = createDataChannel(DATA_CHANNEL_STATE_OPEN);
+    const context = createContext('alice');
+
+    context.state.activePeerConnections.set('bob', createPeerData(channel, 'connected'));
+    context.state.remotePeerStreams.set('bob', createMediaStream());
+    context.state.remotePeerVoiceStreams.set('bob', createMediaStream());
+    context.state.remotePeerScreenShareStreams.set('bob', createMediaStream());
+    context.state.remotePeerCameraStreams.set('bob', createMediaStream());
+
+    removePeer(context, 'bob');
+
+    expect(context.state.remotePeerStreams.has('bob')).toBe(false);
+    expect(context.state.remotePeerVoiceStreams.has('bob')).toBe(false);
+    expect(context.state.remotePeerScreenShareStreams.has('bob')).toBe(false);
+    expect(context.state.remotePeerCameraStreams.has('bob')).toBe(false);
+  });
+
+  it('clears every remote stream map when all peers close, including camera streams', () => {
+    const context = createContext('alice');
+
+    context.state.remotePeerStreams.set('bob', createMediaStream());
+    context.state.remotePeerVoiceStreams.set('bob', createMediaStream());
+    context.state.remotePeerScreenShareStreams.set('bob', createMediaStream());
+    context.state.remotePeerCameraStreams.set('bob', createMediaStream());
+
+    closeAllPeers(context.state);
+
+    expect(context.state.remotePeerStreams.size).toBe(0);
+    expect(context.state.remotePeerVoiceStreams.size).toBe(0);
+    expect(context.state.remotePeerScreenShareStreams.size).toBe(0);
+    expect(context.state.remotePeerCameraStreams.size).toBe(0);
+  });
+
   it('recreates a peer immediately when the data channel is already closed', () => {
     vi.useFakeTimers();
 
@@ -205,9 +243,14 @@ function createPeerData(
   };
 }
 
+function createMediaStream(): MediaStream {
+  return { getTracks: () => [] } as unknown as MediaStream;
+}
+
 function createDataChannel(readyState: RTCDataChannelState): RTCDataChannel {
   return {
     bufferedAmount: 0,
+    close: vi.fn(),
     label: 'chat',
     readyState
   } as unknown as RTCDataChannel;

toju-app/src/app/infrastructure/realtime/peer-connection-manager/recovery/peer-recovery.ts

@@ -14,6 +14,7 @@ import {
   RemovePeerOptions
 } from '../shared';
 import { clearAllPingTimers, stopPingInterval } from '../messaging/ping';
+import { clearDebugNetworkPeerMetrics } from '../../logging/debug-network-metrics';
 
 /**
  * Close and remove a peer connection, data channel, and emit a disconnect event.
@@ -33,11 +34,13 @@ export function removePeer(
   if (!preserveReconnectState) {
     clearPeerReconnectTimer(state, peerId);
     state.disconnectedPeerTracker.delete(peerId);
+    clearDebugNetworkPeerMetrics(peerId);
   }
 
   state.remotePeerStreams.delete(peerId);
   state.remotePeerVoiceStreams.delete(peerId);
   state.remotePeerScreenShareStreams.delete(peerId);
+  state.remotePeerCameraStreams.delete(peerId);
 
   if (peerData) {
     if (peerData.dataChannel)
@@ -72,6 +75,7 @@ export function closeAllPeers(state: PeerConnectionManagerState): void {
   state.remotePeerStreams.clear();
   state.remotePeerVoiceStreams.clear();
   state.remotePeerScreenShareStreams.clear();
+  state.remotePeerCameraStreams.clear();
   state.peerNegotiationQueue.clear();
   state.peerLatencies.clear();
   state.pendingPings.clear();