fix: Bug - User automatically leaves voice after short period of time

Ignore stale P2P self-disconnect voice-state echoes while this client actively owns voice, refresh noise-reduction input on re-join, and repair dual-signal E2E harness expectations.

Co-authored-by: Cursor <cursoragent@cursor.com>

e2e/helpers/webrtc-helpers.ts

@@ -8,10 +8,6 @@ interface ScreenShareMediaStream extends MediaStream {
   __isScreenShare?: boolean;
 }
 
-function webRtcHarnessWindow(scope: Window = window): WebRtcTestHarnessWindow {
-  return scope as unknown as WebRtcTestHarnessWindow;
-}
-
 /**
  * Install RTCPeerConnection monkey-patch on a page BEFORE navigating.
  * Tracks all created peer connections and their remote tracks so tests
@@ -32,7 +28,7 @@ export async function installWebRTCTracking(target: BrowserContext | Page): Prom
       source?: AudioScheduledSourceNode;
       drawIntervalId?: number;
     }[] = [];
-    const harness = webRtcHarnessWindow();
+    const harness = window as unknown as WebRtcTestHarnessWindow;
 
     harness.__rtcConnections = connections;
     harness.__rtcDataChannels = dataChannels;
@@ -160,6 +156,7 @@ export async function installWebRTCTracking(target: BrowserContext | Page): Prom
 
       return resultStream;
     };
+
   });
 }
 
@@ -181,7 +178,7 @@ export async function installWebRTCTracking(target: BrowserContext | Page): Prom
 export async function installAutoResumeAudioContext(page: Page): Promise<void> {
   await page.addInitScript(() => {
     const OrigAudioContext = window.AudioContext;
-    const audioHarness = webRtcHarnessWindow();
+    const audioHarness = window as unknown as WebRtcTestHarnessWindow;
 
     audioHarness.AudioContext = function(this: AudioContext, ...args: AudioContextArgs) {
       const ctx: AudioContext = new OrigAudioContext(...args);
@@ -211,7 +208,7 @@ export async function installAutoResumeAudioContext(page: Page): Promise<void> {
 
 export async function waitForPeerConnected(page: Page, timeout = 30_000): Promise<void> {
   await page.waitForFunction(
-    () => webRtcHarnessWindow().__rtcConnections?.some(
+    () => (window as unknown as WebRtcTestHarnessWindow).__rtcConnections?.some(
       (pc: RTCPeerConnection) => pc.connectionState === 'connected'
     ) ?? false,
     undefined,
@@ -224,7 +221,7 @@ export async function waitForPeerConnected(page: Page, timeout = 30_000): Promis
  */
 export async function isPeerStillConnected(page: Page): Promise<boolean> {
   return page.evaluate(
-    () => webRtcHarnessWindow().__rtcConnections?.some(
+    () => (window as unknown as WebRtcTestHarnessWindow).__rtcConnections?.some(
       (pc: RTCPeerConnection) => pc.connectionState === 'connected'
     ) ?? false
   );
@@ -233,7 +230,7 @@ export async function isPeerStillConnected(page: Page): Promise<boolean> {
 /** Returns the number of tracked peer connections in `connected` state. */
 export async function getConnectedPeerCount(page: Page): Promise<number> {
   return page.evaluate(
-    () => (webRtcHarnessWindow().__rtcConnections as RTCPeerConnection[] | undefined)?.filter(
+    () => ((window as unknown as WebRtcTestHarnessWindow).__rtcConnections as RTCPeerConnection[] | undefined)?.filter(
       (pc) => pc.connectionState === 'connected'
     ).length ?? 0
   );
@@ -241,19 +238,36 @@ export async function getConnectedPeerCount(page: Page): Promise<number> {
 
 /** Wait until the expected number of peer connections are `connected`. */
 export async function waitForConnectedPeerCount(page: Page, expectedCount: number, timeout = 45_000): Promise<void> {
-  await page.waitForFunction(
-    (count) => (webRtcHarnessWindow().__rtcConnections as RTCPeerConnection[] | undefined)?.filter(
-      (pc) => pc.connectionState === 'connected'
-    ).length === count,
-    expectedCount,
-    { timeout }
-  );
+  try {
+    await page.waitForFunction(
+      (count) => ((window as unknown as WebRtcTestHarnessWindow).__rtcConnections as RTCPeerConnection[] | undefined)?.filter(
+        (pc) => pc.connectionState === 'connected'
+      ).length === count,
+      expectedCount,
+      { timeout }
+    );
+  } catch (error) {
+    const diagnostics = await page.evaluate(() => {
+      const connections = (window as unknown as WebRtcTestHarnessWindow).__rtcConnections ?? [];
+
+      return {
+        connected: connections.filter((pc) => pc.connectionState === 'connected').length,
+        states: connections.map((pc) => pc.connectionState)
+      };
+    });
+
+    throw new Error(
+      `Expected ${expectedCount} connected peers within ${timeout}ms; `
+      + `saw ${diagnostics.connected} connected (${diagnostics.states.join(', ') || 'none'})`,
+      { cause: error }
+    );
+  }
 }
 
 /** Returns the number of tracked RTCDataChannels in the open state. */
 export async function getOpenDataChannelCount(page: Page): Promise<number> {
   return page.evaluate(
-    () => (webRtcHarnessWindow().__rtcDataChannels as RTCDataChannel[] | undefined)?.filter(
+    () => ((window as unknown as WebRtcTestHarnessWindow).__rtcDataChannels as RTCDataChannel[] | undefined)?.filter(
       (channel) => channel.readyState === 'open'
     ).length ?? 0
   );
@@ -262,7 +276,7 @@ export async function getOpenDataChannelCount(page: Page): Promise<number> {
 /** Wait until the expected number of tracked RTCDataChannels are open. */
 export async function waitForOpenDataChannelCount(page: Page, expectedCount: number, timeout = 45_000): Promise<void> {
   await page.waitForFunction(
-    (count) => (webRtcHarnessWindow().__rtcDataChannels as RTCDataChannel[] | undefined)?.filter(
+    (count) => ((window as unknown as WebRtcTestHarnessWindow).__rtcDataChannels as RTCDataChannel[] | undefined)?.filter(
       (channel) => channel.readyState === 'open'
     ).length === count,
     expectedCount,
@@ -273,7 +287,7 @@ export async function waitForOpenDataChannelCount(page: Page, expectedCount: num
 /** Close every currently-open RTCDataChannel and return how many were closed. */
 export async function closeOpenDataChannels(page: Page): Promise<number> {
   return page.evaluate(() => {
-    const channels = (webRtcHarnessWindow().__rtcDataChannels as RTCDataChannel[] | undefined) ?? [];
+    const channels = ((window as unknown as WebRtcTestHarnessWindow).__rtcDataChannels as RTCDataChannel[] | undefined) ?? [];
 
     let closed = 0;
 
@@ -293,7 +307,7 @@ export async function closeOpenDataChannels(page: Page): Promise<number> {
 /** Dispatch a synthetic data-channel error event on each open channel. */
 export async function dispatchDataChannelErrors(page: Page): Promise<number> {
   return page.evaluate(() => {
-    const channels = (webRtcHarnessWindow().__rtcDataChannels as RTCDataChannel[] | undefined) ?? [];
+    const channels = ((window as unknown as WebRtcTestHarnessWindow).__rtcDataChannels as RTCDataChannel[] | undefined) ?? [];
 
     let dispatched = 0;
 
@@ -354,7 +368,7 @@ interface PerPeerAudioStat {
 /** Get per-peer audio stats for every tracked RTCPeerConnection. */
 export async function getPerPeerAudioStats(page: Page): Promise<PerPeerAudioStat[]> {
   return page.evaluate(async () => {
-    const connections = webRtcHarnessWindow().__rtcConnections as RTCPeerConnection[] | undefined;
+    const connections = (window as unknown as WebRtcTestHarnessWindow).__rtcConnections as RTCPeerConnection[] | undefined;
 
     if (!connections?.length) {
       return [];
@@ -472,7 +486,7 @@ export async function getAudioStats(page: Page): Promise<{
   inbound: { bytesReceived: number; packetsReceived: number } | null;
 }> {
   return page.evaluate(async () => {
-    const connections = webRtcHarnessWindow().__rtcConnections as RTCPeerConnection[] | undefined;
+    const connections = (window as unknown as WebRtcTestHarnessWindow).__rtcConnections as RTCPeerConnection[] | undefined;
 
     if (!connections?.length)
       return { outbound: null, inbound: null };
@@ -486,8 +500,8 @@ export async function getAudioStats(page: Page): Promise<{
       hasInbound: boolean;
     };
 
-    const hwm: Record<number, HWMEntry> = webRtcHarnessWindow().__rtcStatsHWM =
-      (webRtcHarnessWindow().__rtcStatsHWM as Record<number, HWMEntry> | undefined) ?? {};
+    const hwm: Record<number, HWMEntry> = (window as unknown as WebRtcTestHarnessWindow).__rtcStatsHWM =
+      ((window as unknown as WebRtcTestHarnessWindow).__rtcStatsHWM as Record<number, HWMEntry> | undefined) ?? {};
 
     for (let idx = 0; idx < connections.length; idx++) {
       let stats: RTCStatsReport;
@@ -596,7 +610,7 @@ export async function getAudioStatsDelta(page: Page, durationMs = 3_000): Promis
 export async function waitForAudioStatsPresent(page: Page, timeout = 15_000): Promise<void> {
   await page.waitForFunction(
     async () => {
-      const connections = webRtcHarnessWindow().__rtcConnections as RTCPeerConnection[] | undefined;
+      const connections = (window as unknown as WebRtcTestHarnessWindow).__rtcConnections as RTCPeerConnection[] | undefined;
 
       if (!connections?.length)
         return false;
@@ -705,7 +719,7 @@ export async function getVideoStats(page: Page): Promise<{
   inbound: { bytesReceived: number; packetsReceived: number } | null;
 }> {
   return page.evaluate(async () => {
-    const connections = webRtcHarnessWindow().__rtcConnections as RTCPeerConnection[] | undefined;
+    const connections = (window as unknown as WebRtcTestHarnessWindow).__rtcConnections as RTCPeerConnection[] | undefined;
 
     if (!connections?.length)
       return { outbound: null, inbound: null };
@@ -719,8 +733,8 @@ export async function getVideoStats(page: Page): Promise<{
       hasInbound: boolean;
     }
 
-    const hwm: Record<number, VHWM> = webRtcHarnessWindow().__rtcVideoStatsHWM =
-      (webRtcHarnessWindow().__rtcVideoStatsHWM as Record<number, VHWM> | undefined) ?? {};
+    const hwm: Record<number, VHWM> = (window as unknown as WebRtcTestHarnessWindow).__rtcVideoStatsHWM =
+      ((window as unknown as WebRtcTestHarnessWindow).__rtcVideoStatsHWM as Record<number, VHWM> | undefined) ?? {};
 
     for (let idx = 0; idx < connections.length; idx++) {
       let stats: RTCStatsReport;
@@ -804,7 +818,7 @@ export async function getVideoStats(page: Page): Promise<{
 export async function waitForVideoStatsPresent(page: Page, timeout = 15_000): Promise<void> {
   await page.waitForFunction(
     async () => {
-      const connections = webRtcHarnessWindow().__rtcConnections as RTCPeerConnection[] | undefined;
+      const connections = (window as unknown as WebRtcTestHarnessWindow).__rtcConnections as RTCPeerConnection[] | undefined;
 
       if (!connections?.length)
         return false;
@@ -972,7 +986,7 @@ export async function waitForInboundVideoFlow(
  */
 export async function dumpRtcDiagnostics(page: Page): Promise<string> {
   return page.evaluate(async () => {
-    const conns = webRtcHarnessWindow().__rtcConnections as RTCPeerConnection[] | undefined;
+    const conns = (window as unknown as WebRtcTestHarnessWindow).__rtcConnections as RTCPeerConnection[] | undefined;
 
     if (!conns?.length)
       return 'No connections tracked';