Quelle 2038533-inner.html

Sprache: HTML

products/Sources/formale Sprachen/C/Firefox/dom/media/webrtc/tests/crashtests/2038533-inner.html

<!DOCTYPE html>
<html>
<head>
  <meta charset="utf-8">
</head>
<body>
<script>
const workerSrc = `
let openCount = 0;
onmessage = (event) => {
  if (event.data.channel) {
    const channel = event.data.channel;
    const checkOpen = () => {
      if (++openCount === 2) self.postMessage("opened");
    };
    if (channel.readyState == "open") {
      checkOpen();
    } else {
      channel.onopen = checkOpen;
    }
  }
};
`;

async function run() {
  try {
    const pc1 = new RTCPeerConnection();
    const pc2 = new RTCPeerConnection();
    pc1.onicecandidate = (e) => pc2.addIceCandidate(e.candidate);
    pc2.onicecandidate = (e) => pc1.addIceCandidate(e.candidate);

    const worker = new Worker(
      URL.createObjectURL(new Blob([workerSrc], { type: "text/javascript" }))
    );

    let dc1 = pc1.createDataChannel("test", { negotiated: true, id: 0 });
    let dc2 = pc2.createDataChannel("test", { negotiated: true, id: 0 });
    worker.postMessage({ channel: dc1 }, [dc1]);
    worker.postMessage({ channel: dc2 }, [dc2]);
    // Null immediately so main-thread RTCDataChannel wrappers are eligible for
    // GC during signaling (while the worker is alive). If GC fires then,
    // UnsetWorkerNeedsUs() reaches the worker before NotifyWorkerRefs(Canceling),
    // leaving mWorkerDomDataChannel non-null through CC shutdown so the
    // subsequent AnnounceClosed crashes on the AddRef.
    dc1 = dc2 = null;

    const offer = await pc1.createOffer();
    await pc1.setLocalDescription(offer);
    await pc2.setRemoteDescription(offer);
    const answer = await pc2.createAnswer();
    await pc2.setLocalDescription(answer);
    await pc1.setRemoteDescription(answer);

    await new Promise((resolve) => {
      worker.onmessage = (e) => { if (e.data == "opened") resolve(); };
    });

    // Navigate without explicitly closing the PCs. Page teardown terminates
    // the worker and closes the PCs, triggering the race.
    window.location = "about:blank";
  } catch (e) {
    window.location = "about:blank";
  }
}

run();
</script>
</body>
</html>

Messung V0.5 in Prozent

¤ Dauer der Verarbeitung: 0.12 Sekunden (vorverarbeitet am 2026-08-25) ¤

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