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RTCPeerConnection-restartIce.https.html
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RTCPeerConnection-restartIce.https.html
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<!doctype html>
<meta charset=utf-8>
<title></title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script src="RTCPeerConnection-helper.js"></script>
<script>
"use strict";
function getLines(sdp, startsWith) {
const lines = sdp.split("\r\n").filter(l => l.startsWith(startsWith));
assert_true(lines.length > 0, `One or more ${startsWith} in sdp`);
return lines;
}
const getUfrags = ({sdp}) => getLines(sdp, "a=ice-ufrag:");
const getPwds = ({sdp}) => getLines(sdp, "a=ice-pwd:");
async function doSignalingHandshakeEndOnFirst(pc1, pc2) {
await pc1.setLocalDescription(await pc1.createOffer());
await pc2.setRemoteDescription(pc1.localDescription);
await pc2.setLocalDescription(await pc2.createAnswer());
await pc1.setRemoteDescription(pc2.localDescription); // End on pc1. No race
}
async function doSignalingHandshakeEndOnSecond(pc1, pc2) {
await pc1.setLocalDescription(await pc1.createOffer());
await pc2.setRemoteDescription(pc1.localDescription);
await pc1.setRemoteDescription(await pc2.createAnswer());
await pc2.setLocalDescription(pc1.remoteDescription); // End on pc2. No race
}
async function assertNoNegotiationNeeded(t, pc) {
assert_equals(pc.signalingState, "stable", "In stable state");
const event = await Promise.race([
new Promise(r => pc.onnegotiationneeded = r),
new Promise(r => t.step_timeout(r, 10))
]);
assert_equals(event, undefined, "No negotiationneeded event");
}
// In Chromium, assert_equals() produces test expectations with the values
// compared. Because ufrags are different on each run, this would make Chromium
// test expectations different on each run on tests that failed when comparing
// ufrags. To work around this problem, assert_ufrags_equals() and
// assert_ufrags_not_equals() should be preferred over assert_equals() and
// assert_not_equals().
function assert_ufrags_equals(x, y, description) {
assert_true(x === y, description);
}
function assert_ufrags_not_equals(x, y, description) {
assert_false(x === y, description);
}
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.restartIce();
await assertNoNegotiationNeeded(t, pc1);
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() does not trigger negotiation ahead of initial negotiation");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
pc1.restartIce();
await doSignalingHandshakeEndOnFirst(pc1, pc2);
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() has no effect on initial negotiation");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
pc1.restartIce();
await new Promise(r => pc1.onnegotiationneeded = r);
}, "restartIce() fires negotiationneeded after initial negotiation");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [oldUfrag1] = getUfrags(pc1.localDescription);
const [oldUfrag2] = getUfrags(pc2.localDescription);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
assert_ufrags_equals(getUfrags(pc1.localDescription)[0], oldUfrag1, "control 1");
assert_ufrags_equals(getUfrags(pc2.localDescription)[0], oldUfrag2, "control 2");
pc1.restartIce();
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [newUfrag1] = getUfrags(pc1.localDescription);
const [newUfrag2] = getUfrags(pc2.localDescription);
assert_ufrags_not_equals(newUfrag1, oldUfrag1, "ufrag 1 changed");
assert_ufrags_not_equals(newUfrag1, oldUfrag2, "ufrag 2 changed");
await assertNoNegotiationNeeded(t, pc1);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
assert_ufrags_equals(getUfrags(pc1.localDescription)[0], newUfrag1, "Unchanged 1");
assert_ufrags_equals(getUfrags(pc2.localDescription)[0], newUfrag2, "Unchanged 2");
}, "restartIce() causes fresh ufrags");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [oldUfrag1] = getUfrags(pc1.localDescription);
const [oldUfrag2] = getUfrags(pc2.localDescription);
await pc1.setLocalDescription(await pc1.createOffer());
pc1.restartIce();
await pc2.setRemoteDescription(pc1.localDescription);
await pc2.setLocalDescription(await pc2.createAnswer());
// Several tests in this file initializes the onnegotiationneeded listener
// before the setLocalDescription() or setRemoteDescription() that we expect
// to trigger negotiation needed. This allows Chrome to exercise these tests
// without timing out due to a bug that causes onnegotiationneeded to fire too
// early.
// TODO(https://crbug.com/985797): Once Chrome does not fire ONN too early,
// simply do "await new Promise(...)" instead of
// "await negotiationNeededPromise" here and in other tests in this file.
const negotiationNeededPromise =
new Promise(r => pc1.onnegotiationneeded = r);
await pc1.setRemoteDescription(pc2.localDescription);
assert_ufrags_equals(getUfrags(pc1.localDescription)[0], oldUfrag1, "Unchanged 1");
assert_ufrags_equals(getUfrags(pc2.localDescription)[0], oldUfrag2, "Unchanged 2");
await negotiationNeededPromise;
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [newUfrag1] = getUfrags(pc1.localDescription);
const [newUfrag2] = getUfrags(pc2.localDescription);
assert_ufrags_not_equals(newUfrag1, oldUfrag1, "ufrag 1 changed");
assert_ufrags_not_equals(newUfrag1, oldUfrag2, "ufrag 2 changed");
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() works in have-local-offer");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
await pc1.setLocalDescription(await pc1.createOffer());
pc1.restartIce();
await pc2.setRemoteDescription(pc1.localDescription);
await pc2.setLocalDescription(await pc2.createAnswer());
const negotiationNeededPromise =
new Promise(r => pc1.onnegotiationneeded = r);
await pc1.setRemoteDescription(pc2.localDescription);
const [oldUfrag1] = getUfrags(pc1.localDescription);
const [oldUfrag2] = getUfrags(pc2.localDescription);
await negotiationNeededPromise;
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [newUfrag1] = getUfrags(pc1.localDescription);
const [newUfrag2] = getUfrags(pc2.localDescription);
assert_ufrags_not_equals(newUfrag1, oldUfrag1, "ufrag 1 changed");
assert_ufrags_not_equals(newUfrag1, oldUfrag2, "ufrag 2 changed");
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() works in initial have-local-offer");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [oldUfrag1] = getUfrags(pc1.localDescription);
const [oldUfrag2] = getUfrags(pc2.localDescription);
await pc2.setLocalDescription(await pc2.createOffer());
await pc1.setRemoteDescription(pc2.localDescription);
pc1.restartIce();
await pc2.setRemoteDescription(await pc1.createAnswer());
const negotiationNeededPromise =
new Promise(r => pc1.onnegotiationneeded = r);
await pc1.setLocalDescription(pc2.remoteDescription); // End on pc1. No race
assert_ufrags_equals(getUfrags(pc1.localDescription)[0], oldUfrag1, "Unchanged 1");
assert_ufrags_equals(getUfrags(pc2.localDescription)[0], oldUfrag2, "Unchanged 2");
await negotiationNeededPromise;
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [newUfrag1] = getUfrags(pc1.localDescription);
const [newUfrag2] = getUfrags(pc2.localDescription);
assert_ufrags_not_equals(newUfrag1, oldUfrag1, "ufrag 1 changed");
assert_ufrags_not_equals(newUfrag1, oldUfrag2, "ufrag 2 changed");
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() works in have-remote-offer");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc2.addTransceiver("audio");
await pc2.setLocalDescription(await pc2.createOffer());
await pc1.setRemoteDescription(pc2.localDescription);
pc1.restartIce();
await pc2.setRemoteDescription(await pc1.createAnswer());
await pc1.setLocalDescription(pc2.remoteDescription); // End on pc1. No race
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() does nothing in initial have-remote-offer");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [oldUfrag1] = getUfrags(pc1.localDescription);
const [oldUfrag2] = getUfrags(pc2.localDescription);
pc1.restartIce();
await new Promise(r => pc1.onnegotiationneeded = r);
const negotiationNeededPromise =
new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnSecond(pc2, pc1);
assert_ufrags_equals(getUfrags(pc1.localDescription)[0], oldUfrag1, "nothing yet 1");
assert_ufrags_equals(getUfrags(pc2.localDescription)[0], oldUfrag2, "nothing yet 2");
await negotiationNeededPromise;
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [newUfrag1] = getUfrags(pc1.localDescription);
const [newUfrag2] = getUfrags(pc2.localDescription);
assert_ufrags_not_equals(newUfrag1, oldUfrag1, "ufrag 1 changed");
assert_ufrags_not_equals(newUfrag2, oldUfrag2, "ufrag 2 changed");
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() survives remote offer");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [oldUfrag1] = getUfrags(pc1.localDescription);
const [oldUfrag2] = getUfrags(pc2.localDescription);
pc1.restartIce();
pc2.restartIce();
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnSecond(pc2, pc1);
const [newUfrag1] = getUfrags(pc1.localDescription);
const [newUfrag2] = getUfrags(pc2.localDescription);
assert_ufrags_not_equals(newUfrag1, oldUfrag1, "ufrag 1 changed");
assert_ufrags_not_equals(newUfrag1, oldUfrag2, "ufrag 2 changed");
await assertNoNegotiationNeeded(t, pc1);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
assert_ufrags_equals(getUfrags(pc1.localDescription)[0], newUfrag1, "Unchanged 1");
assert_ufrags_equals(getUfrags(pc2.localDescription)[0], newUfrag2, "Unchanged 2");
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() is satisfied by remote ICE restart");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [oldUfrag1] = getUfrags(pc1.localDescription);
const [oldUfrag2] = getUfrags(pc2.localDescription);
pc1.restartIce();
await new Promise(r => pc1.onnegotiationneeded = r);
await pc1.setLocalDescription(await pc1.createOffer({iceRestart: false}));
await pc2.setRemoteDescription(pc1.localDescription);
await pc2.setLocalDescription(await pc2.createAnswer());
await pc1.setRemoteDescription(pc2.localDescription);
const [newUfrag1] = getUfrags(pc1.localDescription);
const [newUfrag2] = getUfrags(pc2.localDescription);
assert_ufrags_not_equals(newUfrag1, oldUfrag1, "ufrag 1 changed");
assert_ufrags_not_equals(newUfrag1, oldUfrag2, "ufrag 2 changed");
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() trumps {iceRestart: false}");
promise_test(async t => {
const pc1 = new RTCPeerConnection();
const pc2 = new RTCPeerConnection();
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [oldUfrag1] = getUfrags(pc1.localDescription);
const [oldUfrag2] = getUfrags(pc2.localDescription);
pc1.restartIce();
await new Promise(r => pc1.onnegotiationneeded = r);
await pc1.setLocalDescription(await pc1.createOffer());
const negotiationNeededPromise =
new Promise(r => pc1.onnegotiationneeded = r);
await pc1.setLocalDescription({type: "rollback"});
await negotiationNeededPromise;
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const [newUfrag1] = getUfrags(pc1.localDescription);
const [newUfrag2] = getUfrags(pc2.localDescription);
assert_ufrags_not_equals(newUfrag1, oldUfrag1, "ufrag 1 changed");
assert_ufrags_not_equals(newUfrag1, oldUfrag2, "ufrag 2 changed");
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() survives rollback");
promise_test(async t => {
const pc1 = new RTCPeerConnection({bundlePolicy: "max-compat"});
const pc2 = new RTCPeerConnection({bundlePolicy: "max-compat"});
t.add_cleanup(() => pc1.close());
t.add_cleanup(() => pc2.close());
pc1.addTransceiver("audio");
pc1.addTransceiver("video");
await new Promise(r => pc1.onnegotiationneeded = r);
await doSignalingHandshakeEndOnFirst(pc1, pc2);
const oldUfrags1 = getUfrags(pc1.localDescription);
const oldUfrags2 = getUfrags(pc2.localDescription);
const oldPwds2 = getPwds(pc2.localDescription);
pc1.restartIce();
await new Promise(r => pc1.onnegotiationneeded = r);
// Engineer a partial ICE restart from pc2
pc2.restartIce();
await pc2.setLocalDescription(await pc2.createOffer());
{
let {type, sdp} = pc2.localDescription;
// Restore both old ice-ufrag and old ice-pwd to trigger a partial restart
sdp = sdp.replace(getUfrags({sdp})[0], oldUfrags2[0]);
sdp = sdp.replace(getPwds({sdp})[0], oldPwds2[0]);
const newUfrags2 = getUfrags({sdp});
const newPwds2 = getPwds({sdp});
assert_ufrags_equals(newUfrags2[0], oldUfrags2[0], "control ufrag match");
assert_ufrags_equals(newPwds2[0], oldPwds2[0], "control pwd match");
assert_ufrags_not_equals(newUfrags2[1], oldUfrags2[1], "control ufrag non-match");
assert_ufrags_not_equals(newPwds2[1], oldPwds2[1], "control pwd non-match");
await pc1.setRemoteDescription({type, sdp});
}
const negotiationNeededPromise =
new Promise(r => pc1.onnegotiationneeded = r);
await pc1.setLocalDescription(await pc1.createAnswer());
const newUfrags1 = getUfrags(pc1.localDescription);
assert_ufrags_equals(newUfrags1[0], oldUfrags1[0], "Unchanged 1");
assert_ufrags_not_equals(newUfrags1[1], oldUfrags1[1], "Restarted 2");
await negotiationNeededPromise;
await pc1.setLocalDescription(await pc1.createOffer());
const newestUfrags1 = getUfrags(pc1.localDescription);
assert_ufrags_not_equals(newestUfrags1[0], oldUfrags1[0], "Restarted 1");
assert_ufrags_not_equals(newestUfrags1[1], oldUfrags1[1], "Restarted 2");
await assertNoNegotiationNeeded(t, pc1);
}, "restartIce() survives remote offer containing partial restart");
</script>