receiver-track-live.https.html

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This WPT test may be referenced by the following Test IDs:
- /webrtc/receiver-track-live.https.html - WPT Dashboard Interop Dashboard

<!DOCTYPE html>

<html>

<head>

    <meta charset="utf-8">

    <title>Remote tracks should not get ended except for stop/close</title>

<script src="/resources/testharness.js"></script>

    <script src="/resources/testharnessreport.js"></script>

    <script src=/resources/testdriver.js></script>

<script src=/resources/testdriver-vendor.js></script>

<script src='../mediacapture-streams/permission-helper.js'></script>

    <script src="RTCPeerConnection-helper.js"></script>

</head>

<body>

    <video id="video" controls autoplay playsinline></video>

    <script>

    let pc1, pc2;

    let localTrack, remoteTrack;

    promise_test(async (test) => {

        await setMediaPermission("granted", ["microphone"]);

        const localStream = await navigator.mediaDevices.getUserMedia({audio: true});

        localTrack = localStream.getAudioTracks()[0];

        pc1 = new RTCPeerConnection();

        pc1.addTrack(localTrack, localStream);

        pc2 = new RTCPeerConnection();

        let trackPromise = new Promise(resolve => {

            pc2.ontrack = e => resolve(e.track);

});

        exchangeIceCandidates(pc1, pc2);

        await exchangeOfferAnswer(pc1, pc2);

        remoteTrack = await trackPromise;

        video.srcObject = new MediaStream([remoteTrack]);

        await video.play();

    }, "Setup audio call");

    promise_test(async (test) => {

        pc1.getTransceivers()[0].direction = "inactive";

        let offer = await pc1.createOffer();

        await pc1.setLocalDescription(offer);

        // Let's remove ssrc lines

        let sdpLines = offer.sdp.split("\r\n");

        offer.sdp = sdpLines.filter(line => line && !line.startsWith("a=ssrc")).join("\r\n") + "\r\n";

        await pc2.setRemoteDescription(offer);

        let answer = await pc2.createAnswer();

        await pc2.setLocalDescription(answer);

        await pc1.setRemoteDescription(answer);

        assert_equals(remoteTrack.readyState, "live");

    }, "Inactivate the audio transceiver");

    promise_test(async (test) => {

        pc1.getTransceivers()[0].direction = "sendonly";

        await exchangeOfferAnswer(pc1, pc2);

        assert_equals(remoteTrack.readyState, "live");

    }, "Reactivate the audio transceiver");

    promise_test(async (test) => {

        pc1.close();

        pc2.close();

        localTrack.stop();

    }, "Clean-up");

    </script>

</body>

</html>