| <!doctype html> |
| <meta charset=utf-8> |
| <title>RTCPeerConnection.prototype.setLocalDescription</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="RTCPeerConnection-helper.js"></script> |
| <script> |
| 'use strict'; |
| |
| // Test is based on the following editor draft: |
| // https://w3c.github.io/webrtc-pc/archives/20170605/webrtc.html |
| |
| // The following helper functions are called from RTCPeerConnection-helper.js: |
| // generateDataChannelOffer |
| // assert_session_desc_not_similar |
| // assert_session_desc_similar |
| |
| /* |
| 4.3.2. Interface Definition |
| [Constructor(optional RTCConfiguration configuration)] |
| interface RTCPeerConnection : EventTarget { |
| Promise<void> setRemoteDescription( |
| RTCSessionDescriptionInit description); |
| |
| readonly attribute RTCSessionDescription? remoteDescription; |
| readonly attribute RTCSessionDescription? currentRemoteDescription; |
| readonly attribute RTCSessionDescription? pendingRemoteDescription; |
| ... |
| }; |
| |
| 4.6.2. RTCSessionDescription Class |
| dictionary RTCSessionDescriptionInit { |
| required RTCSdpType type; |
| DOMString sdp = ""; |
| }; |
| |
| 4.6.1. RTCSdpType |
| enum RTCSdpType { |
| "offer", |
| "pranswer", |
| "answer", |
| "rollback" |
| }; |
| */ |
| |
| promise_test(t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| const states = []; |
| pc.addEventListener('signalingstatechange', () => states.push(pc.signalingState)); |
| |
| return generateAudioReceiveOnlyOffer(pc) |
| .then(offer1 => |
| pc.setLocalDescription(offer1) |
| .then(() => generateAnswer(offer1)) |
| .then(answer => pc.setRemoteDescription(answer)) |
| .then(() => { |
| pc.createDataChannel('test'); |
| return generateVideoReceiveOnlyOffer(pc); |
| }) |
| .then(offer2 => |
| pc.setLocalDescription(offer2) |
| .then(() => { |
| assert_equals(pc.signalingState, 'have-local-offer'); |
| assert_session_desc_not_similar(offer1, offer2); |
| assert_session_desc_similar(pc.localDescription, offer2); |
| assert_session_desc_similar(pc.currentLocalDescription, offer1); |
| assert_session_desc_similar(pc.pendingLocalDescription, offer2); |
| |
| assert_array_equals(states, ['have-local-offer', 'stable', 'have-local-offer']); |
| }))); |
| }, 'Calling createOffer() and setLocalDescription() again after one round of local-offer/remote-answer should succeed'); |
| |
| promise_test(async t => { |
| const pc1 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc1.close()); |
| |
| const pc2 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc2.close()); |
| |
| const states = []; |
| pc1.addEventListener('signalingstatechange', () => states.push(pc1.signalingState)); |
| |
| assert_equals(pc1.localDescription, null); |
| assert_equals(pc1.currentLocalDescription, null); |
| assert_equals(pc1.pendingLocalDescription, null); |
| |
| pc1.createDataChannel('test'); |
| const offer = await pc1.createOffer(); |
| |
| assert_equals(pc1.localDescription, null); |
| assert_equals(pc1.currentLocalDescription, null); |
| assert_equals(pc1.pendingLocalDescription, null); |
| |
| await pc1.setLocalDescription(offer); |
| |
| assert_session_desc_similar(pc1.localDescription, offer); |
| assert_equals(pc1.currentLocalDescription, null); |
| assert_session_desc_similar(pc1.pendingLocalDescription, offer); |
| |
| await pc2.setRemoteDescription(offer); |
| const answer = await pc2.createAnswer(); |
| await pc2.setLocalDescription(answer); |
| await pc1.setRemoteDescription(answer); |
| |
| assert_equals(pc1.signalingState, 'stable'); |
| assert_session_desc_similar(pc1.localDescription, offer); |
| assert_session_desc_similar(pc1.currentLocalDescription, offer); |
| assert_equals(pc1.pendingLocalDescription, null); |
| |
| const stream = await getNoiseStream({audio:true}); |
| pc2.addTrack(stream.getTracks()[0], stream); |
| |
| const reoffer = await pc2.createOffer(); |
| await pc2.setLocalDescription(reoffer); |
| await pc1.setRemoteDescription(reoffer); |
| const reanswer = await pc1.createAnswer(); |
| await pc1.setLocalDescription(reanswer); |
| |
| assert_session_desc_similar(pc1.localDescription, reanswer); |
| assert_session_desc_similar(pc1.currentLocalDescription, reanswer); |
| assert_equals(pc1.pendingLocalDescription, null); |
| }, 'Switching role from answerer to offerer after going back to stable state should succeed'); |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| const offer = await pc.createOffer(); |
| let eventSequence = ''; |
| const signalingstatechangeResolver = new Resolver(); |
| pc.onsignalingstatechange = () => { |
| eventSequence += 'onsignalingstatechange;'; |
| signalingstatechangeResolver.resolve(); |
| }; |
| await pc.setLocalDescription(offer); |
| eventSequence += 'setLocalDescription;'; |
| await signalingstatechangeResolver; |
| assert_equals(eventSequence, 'onsignalingstatechange;setLocalDescription;'); |
| }, 'onsignalingstatechange fires before setLocalDescription resolves'); |
| |
| /* |
| TODO |
| 4.3.2. setLocalDescription |
| 4. If description.sdp is null and description.type is pranswer, set description.sdp |
| to lastAnswer. |
| 7. If description.type is pranswer and description.sdp does not match lastAnswer, |
| reject the promise with a newly created InvalidModificationError and abort these |
| steps. |
| */ |
| |
| </script> |
