152 lines
5.5 KiB
HTML
152 lines
5.5 KiB
HTML
<!doctype html>
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<meta charset=utf-8>
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<title>RTCPeerConnection.prototype.setLocalDescription</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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// generateDataChannelOffer
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// assert_session_desc_not_similar
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// assert_session_desc_similar
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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> setRemoteDescription(
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RTCSessionDescriptionInit description);
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readonly attribute RTCSessionDescription? remoteDescription;
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readonly attribute RTCSessionDescription? currentRemoteDescription;
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readonly attribute RTCSessionDescription? pendingRemoteDescription;
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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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*/
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promise_test(t => {
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const pc = new RTCPeerConnection();
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t.add_cleanup(() => pc.close());
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const states = [];
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pc.addEventListener('signalingstatechange', () => states.push(pc.signalingState));
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return generateAudioReceiveOnlyOffer(pc)
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.then(offer1 =>
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pc.setLocalDescription(offer1)
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.then(() => generateAnswer(offer1))
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.then(answer => pc.setRemoteDescription(answer))
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.then(() => {
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pc.createDataChannel('test');
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return generateVideoReceiveOnlyOffer(pc);
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})
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.then(offer2 =>
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pc.setLocalDescription(offer2)
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.then(() => {
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assert_equals(pc.signalingState, 'have-local-offer');
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assert_session_desc_not_similar(offer1, offer2);
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assert_session_desc_similar(pc.localDescription, offer2);
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assert_session_desc_similar(pc.currentLocalDescription, offer1);
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assert_session_desc_similar(pc.pendingLocalDescription, offer2);
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assert_array_equals(states, ['have-local-offer', 'stable', 'have-local-offer']);
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})));
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}, 'Calling createOffer() and setLocalDescription() again after one round of local-offer/remote-answer should succeed');
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promise_test(async t => {
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const pc1 = new RTCPeerConnection();
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t.add_cleanup(() => pc1.close());
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const pc2 = new RTCPeerConnection();
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t.add_cleanup(() => pc2.close());
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const states = [];
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pc1.addEventListener('signalingstatechange', () => states.push(pc1.signalingState));
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assert_equals(pc1.localDescription, null);
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assert_equals(pc1.currentLocalDescription, null);
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assert_equals(pc1.pendingLocalDescription, null);
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pc1.createDataChannel('test');
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const offer = await pc1.createOffer();
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assert_equals(pc1.localDescription, null);
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assert_equals(pc1.currentLocalDescription, null);
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assert_equals(pc1.pendingLocalDescription, null);
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await pc1.setLocalDescription(offer);
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assert_session_desc_similar(pc1.localDescription, offer);
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assert_equals(pc1.currentLocalDescription, null);
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assert_session_desc_similar(pc1.pendingLocalDescription, offer);
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await pc2.setRemoteDescription(offer);
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const answer = await pc2.createAnswer();
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await pc2.setLocalDescription(answer);
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await pc1.setRemoteDescription(answer);
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assert_equals(pc1.signalingState, 'stable');
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assert_session_desc_similar(pc1.localDescription, offer);
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assert_session_desc_similar(pc1.currentLocalDescription, offer);
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assert_equals(pc1.pendingLocalDescription, null);
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const stream = await getNoiseStream({audio:true});
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pc2.addTrack(stream.getTracks()[0], stream);
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const reoffer = await pc2.createOffer();
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await pc2.setLocalDescription(reoffer);
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await pc1.setRemoteDescription(reoffer);
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const reanswer = await pc1.createAnswer();
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await pc1.setLocalDescription(reanswer);
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assert_session_desc_similar(pc1.localDescription, reanswer);
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assert_session_desc_similar(pc1.currentLocalDescription, reanswer);
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assert_equals(pc1.pendingLocalDescription, null);
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}, 'Switching role from answerer to offerer after going back to stable state should succeed');
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promise_test(async t => {
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const pc = new RTCPeerConnection();
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t.add_cleanup(() => pc.close());
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const offer = await pc.createOffer();
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let eventSequence = '';
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const signalingstatechangeResolver = new Resolver();
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pc.onsignalingstatechange = () => {
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eventSequence += 'onsignalingstatechange;';
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signalingstatechangeResolver.resolve();
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};
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await pc.setLocalDescription(offer);
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eventSequence += 'setLocalDescription;';
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await signalingstatechangeResolver;
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assert_equals(eventSequence, 'onsignalingstatechange;setLocalDescription;');
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}, 'onsignalingstatechange fires before setLocalDescription resolves');
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/*
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TODO
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4.3.2. setLocalDescription
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4. If description.sdp is null and description.type is pranswer, set description.sdp
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to lastAnswer.
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7. If description.type is pranswer and description.sdp does not match lastAnswer,
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reject the promise with a newly created InvalidModificationError and abort these
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steps.
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*/
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</script>
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