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Update web-platform-tests to revision 8a2ceb5f18911302b7a5c1cd2791f4ab50ad4326
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Josh Matthews
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5377 changed files with 174916 additions and 84369 deletions
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<!doctype html>
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<meta charset=utf-8>
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<title>RTCPeerConnection Set Session Description - Transceiver Tests</title>
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<script src="/resources/testharness.js"></script>
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<script src="/resources/testharnessreport.js"></script>
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<script src="RTCPeerConnection-helper.js"></script>
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<script>
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'use strict';
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// Test is based on the following editor draft:
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// https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.html
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// The following helper functions are called from RTCPeerConnection-helper.js:
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// generateAnswer
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/*
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4.3.2. Interface Definition
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[Constructor(optional RTCConfiguration configuration)]
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interface RTCPeerConnection : EventTarget {
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Promise<void> setLocalDescription(
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RTCSessionDescriptionInit description);
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Promise<void> setRemoteDescription(
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RTCSessionDescriptionInit description);
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...
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};
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4.6.2. RTCSessionDescription Class
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dictionary RTCSessionDescriptionInit {
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required RTCSdpType type;
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DOMString sdp = "";
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};
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4.6.1. RTCSdpType
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enum RTCSdpType {
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"offer",
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"pranswer",
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"answer",
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"rollback"
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};
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5.4. RTCRtpTransceiver Interface
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interface RTCRtpTransceiver {
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readonly attribute DOMString? mid;
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[SameObject]
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readonly attribute RTCRtpSender sender;
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[SameObject]
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readonly attribute RTCRtpReceiver receiver;
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readonly attribute RTCRtpTransceiverDirection direction;
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readonly attribute RTCRtpTransceiverDirection? currentDirection;
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...
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};
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*/
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/*
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4.3.1.6. Set the RTCSessionSessionDescription
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7. If description is set as a local description, then run the following steps for
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each media description in description that is not yet associated with an
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RTCRtpTransceiver object:
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1. Let transceiver be the RTCRtpTransceiver used to create the media
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description.
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2. Set transceiver's mid value to the mid of the corresponding media
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description.
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*/
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promise_test(() => {
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const pc = new RTCPeerConnection();
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const transceiver = pc.addTransceiver('audio');
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assert_equals(transceiver.mid, null);
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return pc.createOffer()
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.then(offer => {
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assert_equals(transceiver.mid, null,
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'Expect transceiver.mid to still be null after createOffer');
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return pc.setLocalDescription(offer)
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.then(() => {
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assert_equals(typeof transceiver.mid, 'string',
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'Expect transceiver.mid to set to valid string value');
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assert_equals(offer.sdp.includes(`\r\na=mid:${transceiver.mid}`), true,
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'Expect transceiver mid to be found in offer SDP');
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});
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});
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}, 'setLocalDescription(offer) with m= section should assign mid to corresponding transceiver');
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/*
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4.3.1.6. Set the RTCSessionSessionDescription
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8. If description is set as a remote description, then run the following steps
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for each media description in description:
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2. If no suitable transceiver is found (transceiver is unset), run the following
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steps:
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1. Create an RTCRtpSender, sender, from the media description.
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2. Create an RTCRtpReceiver, receiver, from the media description.
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3. Create an RTCRtpTransceiver with sender, receiver and direction, and let
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transceiver be the result.
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3. Set transceiver's mid value to the mid of the corresponding media description.
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*/
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promise_test(() => {
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const pc1 = new RTCPeerConnection();
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const pc2 = new RTCPeerConnection();
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const transceiver1 = pc1.addTransceiver('audio');
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assert_array_equals(pc1.getTransceivers(), [transceiver1]);
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assert_array_equals(pc2.getTransceivers(), []);
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return pc1.createOffer()
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.then(offer => {
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return Promise.all([
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pc1.setLocalDescription(offer),
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pc2.setRemoteDescrption(offer)
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])
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.then(() => {
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const transceivers = pc2.getTransceivers();
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assert_equals(transceivers.length, 1,
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'Expect new transceiver added to pc2 after setRemoteDescription');
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const [ transceiver2 ] = transceivers;
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assert_equals(typeof transceiver2.mid, 'string',
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'Expect transceiver2.mid to be set');
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assert_equals(transceiver1.mid, transceiver2.mid,
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'Expect transceivers of both side to have the same mid');
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assert_equals(offer.sdp.includes(`\r\na=mid:${transceiver2.mid}`), true,
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'Expect transceiver mid to be found in offer SDP');
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});
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});
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}, 'setRemoteDescription(offer) with m= section and no existing transceiver should create corresponding transceiver');
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/*
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4.3.1.6. Set the RTCSessionSessionDescription
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9. If description is of type "rollback", then run the following steps:
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1. If the mid value of an RTCRtpTransceiver was set to a non-null value by
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the RTCSessionDescription that is being rolled back, set the mid value
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of that transceiver to null, as described by [JSEP] (section 4.1.8.2.).
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*/
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promise_test(() => {
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const pc = new RTCPeerConnection();
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const transceiver = pc.addTransceiver('audio');
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assert_equals(transceiver.mid, null);
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return pc.createOffer()
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.then(offer => {
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assert_equals(transceiver.mid, null);
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return pc.setLocalDescription(offer);
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})
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.then(() => {
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assert_not_equals(transceiver.mid, null);
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return pc.setLocalDescription({ type: 'rollback' });
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})
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.then(() => {
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assert_equals(transceiver.mid, null,
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'Expect transceiver.mid to become null again after rollback');
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});
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}, 'setLocalDescription(rollback) should unset transceiver.mid');
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promise_test(() => {
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const pc = new RTCPeerConnection();
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const transceiver1 = pc.addTransceiver('audio');
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assert_equals(transceiver1.mid, null);
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return pc.createOffer()
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.then(offer =>
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pc.setLocalDescription(offer)
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.then(() => generateAnswer(offer)))
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.then(answer => pc.setRemoteDescription(answer))
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.then(() => {
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// pc is back to stable state
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// create another transceiver
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const transceiver2 = pc.addTransceiver('video');
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assert_not_equals(transceiver1.mid, null);
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assert_equals(transceiver2.mid, null);
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return pc.createOffer()
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.then(offer => pc.setLocalDescription(offer))
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.then(() => {
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assert_not_equals(transceiver1.mid, null);
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assert_not_equals(transceiver2.mid, null,
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'Expect transceiver2.mid to become set');
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return pc.setLocalDescription({ type: 'rollback' });
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})
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.then(() => {
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assert_not_equals(transceiver1.mid, null,
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'Expect transceiver1.mid to stay set');
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assert_equals(transceiver2.mid, null,
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'Expect transceiver2.mid to be rolled back to null');
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});
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})
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}, 'setLocalDescription(rollback) should only unset transceiver mids associated with current round');
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/*
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4.3.1.6. Set the RTCSessionSessionDescription
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9. If description is of type "rollback", then run the following steps:
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2. If an RTCRtpTransceiver was created by applying the RTCSessionDescription
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that is being rolled back, and a track has not been attached to it via
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addTrack, remove that transceiver from connection's set of transceivers,
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as described by [JSEP] (section 4.1.8.2.).
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*/
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promise_test(() => {
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const pc1 = new RTCPeerConnection();
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const pc2 = new RTCPeerConnection();
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pc1.addTransceiver('audio');
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return pc1.createOffer()
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.then(offer => pc2.setRemoteDescription(offer))
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.then(() => {
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const transceivers = pc2.getTransceivers();
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assert_equals(transceivers.length, 1);
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const [ transceiver ] = transceivers;
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assert_equals(typeof transceiver.mid, 'string',
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'Expect transceiver.mid to be set');
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return pc2.setRemoteDescription({ type: 'rollback' })
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.then(() => {
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assert_equals(transceiver.mid, null,
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'Expect transceiver.mid to be unset');
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assert_array_equals(pc2.getTransceivers(), [],
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`Expect transceiver to be removed from pc2's transceiver list`);
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});
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});
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}, 'setRemoteDescription(rollback) should remove newly created transceiver from transceiver list');
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/*
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TODO
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- Steps for transceiver direction is added to tip of tree draft, but not yet
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published as editor's draft
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4.3.1.6. Set the RTCSessionSessionDescription
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8. If description is set as a remote description, then run the following steps
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for each media description in description:
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1. As described by [JSEP] (section 5.9.), attempt to find an existing
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RTCRtpTransceiver object, transceiver, to represent the media description.
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3. If the media description has no MID, and transceiver's mid is unset, generate
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a random value as described in [JSEP] (section 5.9.).
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4. If the direction of the media description is sendrecv or sendonly, and
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transceiver.receiver.track has not yet been fired in a track event, process
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the remote track for the media description, given transceiver.
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5. If the media description is rejected, and transceiver is not already stopped,
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stop the RTCRtpTransceiver transceiver.
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[JSEP]
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5.9. Applying a Remote Description
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- If the m= section is not associated with any RtpTransceiver
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(possibly because it was dissociated in the previous step),
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either find an RtpTransceiver or create one according to the
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following steps:
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- If the m= section is sendrecv or recvonly, and there are
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RtpTransceivers of the same type that were added to the
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PeerConnection by addTrack and are not associated with any
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m= section and are not stopped, find the first (according to
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the canonical order described in Section 5.2.1) such
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RtpTransceiver.
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- If no RtpTransceiver was found in the previous step, create
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one with a recvonly direction.
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*/
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</script>
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