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<!doctype html>
<meta charset=utf-8>
<title>RTCPeerConnection.prototype.setRemoteDescription</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:
// generateOffer()
// generateAnswer()
// assert_session_desc_not_equals()
// assert_session_desc_equals()
// test_state_change_event()
/*
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"
};
*/
/*
4.6.1. enum RTCSdpType
*/
promise_test(t => {
const pc = new RTCPeerConnection();
// SDP is validated after WebIDL validation
return promise_rejects(t, new TypeError(),
pc.setRemoteDescription({
type: 'bogus',
sdp: 'bogus'
}));
}, 'setRemoteDescription with invalid type and invalid SDP should reject with TypeError');
promise_test(t => {
const pc = new RTCPeerConnection();
// SDP is validated after validating type
return promise_rejects(t, 'InvalidStateError',
pc.setRemoteDescription({
type: 'answer',
sdp: 'invalid'
}));
}, 'setRemoteDescription() with invalid SDP and stable state should reject with InvalidStateError');
/* Operations after returning to stable state */
promise_test(t => {
const pc = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
test_state_change_event(t, pc,
['have-remote-offer', 'stable', 'have-remote-offer']);
return pc2.createOffer({ offerToReceiveAudio: true })
.then(offer1 =>
pc.setRemoteDescription(offer1)
.then(() => pc.createAnswer())
.then(answer => pc.setLocalDescription(answer))
.then(() => pc2.createOffer({ offerToReceiveVideo: true }))
.then(offer2 => {
return pc.setRemoteDescription(offer2)
.then(() => {
assert_equals(pc.signalingState, 'have-remote-offer');
assert_session_desc_not_equals(offer1, offer2);
assert_session_desc_equals(pc.remoteDescription, offer2);
assert_session_desc_equals(pc.currentRemoteDescription, offer1);
assert_session_desc_equals(pc.pendingRemoteDescription, offer2);
});
}));
}, 'Calling setRemoteDescription() again after one round of remote-offer/local-answer should succeed');
promise_test(t => {
const pc = new RTCPeerConnection();
test_state_change_event(t, pc,
['have-local-offer', 'stable', 'have-remote-offer']);
return pc.createOffer({ offerToReceiveAudio: true })
.then(offer =>
pc.setLocalDescription(offer)
.then(() => generateAnswer(offer)))
.then(answer =>
pc.setRemoteDescription(answer)
.then(() => generateOffer({ pc, data: true }))
.then(offer =>
pc.setRemoteDescription(offer)
.then(() => {
assert_equals(pc.signalingState, 'have-remote-offer');
assert_session_desc_equals(pc.remoteDescription, offer);
assert_session_desc_equals(pc.currentRemoteDescription, answer);
assert_session_desc_equals(pc.pendingRemoteDescription, offer);
})));
}, 'Switching role from offerer to answerer after going back to stable state should succeed');
/*
TODO
4.3.2. setRemoteDescription
- If an a=identity attribute is present in the session description, the browser
validates the identity assertion.
*/
</script>
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