test_peerConnection_earlyMediaNoCodecs.html

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<!DOCTYPE HTML>

<html>

<head>

  <script type="application/javascript" src="pc.js"></script>

</head>

<body>

<pre id="test">

<script type="application/javascript">

  createHTML({

    bug: "2072722",

    title: "Adding a transceiver to a connected datachannel-only bundle must not start an audio receive stream without codecs"

});

  runNetworkTest(async () => {

    const pc1 = new RTCPeerConnection();

    const pc2 = new RTCPeerConnection();

    pc1.onicecandidate = e => e.candidate && pc2.addIceCandidate(e.candidate);

    pc2.onicecandidate = e => e.candidate && pc1.addIceCandidate(e.candidate);

    const ctx = new AudioContext();

    const track = ctx.createMediaStreamDestination().stream.getAudioTracks()[0];

    pc1.createDataChannel("channel");

    await pc1.setLocalDescription(await pc1.createOffer());

    await pc2.setRemoteDescription(pc1.localDescription);

    await pc2.setLocalDescription(await pc2.createAnswer());

    await pc1.setRemoteDescription(pc2.localDescription);

    await new Promise(resolve => {

      pc1.onconnectionstatechange = () => {

        if (pc1.connectionState == "connected") {

          resolve();

};

      if (pc1.connectionState == "connected") {

        resolve();

});

    await pc1.setLocalDescription({});

    let answer;

    try {

      answer = await pc2.createAnswer();

    } catch (e) {}

    const legacy = new Promise(resolve =>

      pc1.setLocalDescription(answer, resolve, resolve)

);

    pc1.addTransceiver(track);

    await legacy;

    await pc1.setLocalDescription();

    await wait(1000);

    ok(true, "did not crash");

    pc1.close();

    pc2.close();

    ctx.close();

});

</script>

</pre>

</body>

</html>