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<title>RTCIceTransport-extensions.https.html</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="RTCIceTransport-extension-helper.js"></script>
<script>
'use strict';
// These tests are based on the following extension specification:
// https://w3c.github.io/webrtc-ice/
// The following helper functions are called from
// RTCIceTransport-extension-helper.js:
// makeIceTransport
// makeGatherAndStartTwoIceTransports
const ICE_UFRAG = 'u'.repeat(4);
const ICE_PWD = 'p'.repeat(22);
test(() => {
const iceTransport = new RTCIceTransport();
}, 'RTCIceTransport constructor does not throw');
test(() => {
const iceTransport = new RTCIceTransport();
assert_equals(iceTransport.role, null, 'Expect role to be null');
assert_equals(iceTransport.state, 'new', `Expect state to be 'new'`);
assert_equals(iceTransport.gatheringState, 'new',
`Expect gatheringState to be 'new'`);
assert_array_equals(iceTransport.getLocalCandidates(), [],
'Expect no local candidates');
assert_array_equals(iceTransport.getRemoteCandidates(), [],
'Expect no remote candidates');
assert_equals(iceTransport.getSelectedCandidatePair(), null,
'Expect no selected candidate pair');
assert_not_equals(iceTransport.getLocalParameters(), null,
'Expect local parameters generated');
assert_equals(iceTransport.getRemoteParameters(), null,
'Expect no remote parameters');
}, 'RTCIceTransport initial properties are set');
test(t => {
const iceTransport = makeIceTransport(t);
assert_throws_js(TypeError, () =>
iceTransport.gather({ iceServers: null }));
}, 'gather() with { iceServers: null } should throw TypeError');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.gather({ iceServers: undefined });
}, 'gather() with { iceServers: undefined } should succeed');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.gather({ iceServers: [{
urls: ['turns:turn.example.org', 'turn:turn.example.net'],
username: 'user',
credential: 'cred',
}] });
}, 'gather() with one turns server, one turn server, username, credential' +
' should succeed');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.gather({ iceServers: [{
urls: ['stun:stun1.example.net', 'stun:stun2.example.net'],
}] });
}, 'gather() with 2 stun servers should succeed');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.stop();
assert_throws_dom('InvalidStateError', () => iceTransport.gather({}));
}, 'gather() throws if closed');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.gather({});
assert_equals(iceTransport.gatheringState, 'gathering');
}, `gather() transitions gatheringState to 'gathering'`);
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.gather({});
assert_throws_dom('InvalidStateError', () => iceTransport.gather({}));
}, 'gather() throws if called twice');
promise_test(async t => {
const iceTransport = makeIceTransport(t);
const watcher = new EventWatcher(t, iceTransport, 'gatheringstatechange');
iceTransport.gather({});
await watcher.wait_for('gatheringstatechange');
assert_equals(iceTransport.gatheringState, 'complete');
}, `eventually transition gatheringState to 'complete'`);
promise_test(async t => {
const iceTransport = makeIceTransport(t);
const watcher = new EventWatcher(t, iceTransport,
[ 'icecandidate', 'gatheringstatechange' ]);
iceTransport.gather({});
let candidate;
do {
(({ candidate } = await watcher.wait_for('icecandidate')));
} while (candidate !== null);
assert_equals(iceTransport.gatheringState, 'gathering');
await watcher.wait_for('gatheringstatechange');
assert_equals(iceTransport.gatheringState, 'complete');
}, 'onicecandidate fires with null candidate before gatheringState' +
` transitions to 'complete'`);
promise_test(async t => {
const iceTransport = makeIceTransport(t);
const watcher = new EventWatcher(t, iceTransport, 'icecandidate');
iceTransport.gather({});
const { candidate } = await watcher.wait_for('icecandidate');
assert_not_equals(candidate.candidate, '');
assert_array_equals(iceTransport.getLocalCandidates(), [candidate]);
}, 'gather() returns at least one host candidate');
promise_test(async t => {
const iceTransport = makeIceTransport(t);
const watcher = new EventWatcher(t, iceTransport, 'icecandidate');
iceTransport.gather({ gatherPolicy: 'relay' });
const { candidate } = await watcher.wait_for('icecandidate');
assert_equals(candidate, null);
assert_array_equals(iceTransport.getLocalCandidates(), []);
}, `gather() returns no candidates with { gatherPolicy: 'relay'} and no turn` +
' servers');
const dummyRemoteParameters = {
usernameFragment: ICE_UFRAG,
password: ICE_PWD,
};
test(() => {
const iceTransport = new RTCIceTransport();
iceTransport.stop();
assert_throws_dom('InvalidStateError',
() => iceTransport.start(dummyRemoteParameters));
assert_equals(iceTransport.getRemoteParameters(), null);
}, `start() throws if closed`);
test(() => {
const iceTransport = new RTCIceTransport();
assert_throws_js(TypeError, () => iceTransport.start({}));
assert_throws_js(TypeError,
() => iceTransport.start({ usernameFragment: ICE_UFRAG }));
assert_throws_js(TypeError,
() => iceTransport.start({ password: ICE_PWD }));
assert_equals(iceTransport.getRemoteParameters(), null);
}, 'start() throws if usernameFragment or password not set');
test(() => {
const TEST_CASES = [
{usernameFragment: '2sh', description: 'less than 4 characters long'},
{
usernameFragment: 'x'.repeat(257),
description: 'greater than 256 characters long',
},
{usernameFragment: '123\n', description: 'illegal character'},
];
for (const {usernameFragment, description} of TEST_CASES) {
const iceTransport = new RTCIceTransport();
assert_throws_dom(
'SyntaxError',
() => iceTransport.start({ usernameFragment, password: ICE_PWD }),
`illegal usernameFragment (${description}) should throw a SyntaxError`);
}
}, 'start() throws if usernameFragment does not conform to syntax');
test(() => {
const TEST_CASES = [
{password: 'x'.repeat(21), description: 'less than 22 characters long'},
{
password: 'x'.repeat(257),
description: 'greater than 256 characters long',
},
{password: ('x'.repeat(21) + '\n'), description: 'illegal character'},
];
for (const {password, description} of TEST_CASES) {
const iceTransport = new RTCIceTransport();
assert_throws_dom(
'SyntaxError',
() => iceTransport.start({ usernameFragment: ICE_UFRAG, password }),
`illegal password (${description}) should throw a SyntaxError`);
}
}, 'start() throws if password does not conform to syntax');
const assert_ice_parameters_equals = (a, b) => {
assert_equals(a.usernameFragment, b.usernameFragment,
'usernameFragments are equal');
assert_equals(a.password, b.password, 'passwords are equal');
};
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.start(dummyRemoteParameters);
assert_equals(iceTransport.state, 'new');
assert_ice_parameters_equals(iceTransport.getRemoteParameters(),
dummyRemoteParameters);
}, `start() does not transition state to 'checking' if no remote candidates ` +
'added');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.start(dummyRemoteParameters);
assert_equals(iceTransport.role, 'controlled');
}, `start() with default role sets role attribute to 'controlled'`);
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.start(dummyRemoteParameters, 'controlling');
assert_equals(iceTransport.role, 'controlling');
}, `start() sets role attribute to 'controlling'`);
const candidate1 = new RTCIceCandidate({
candidate: 'candidate:1 1 udp 2113929471 203.0.113.100 10100 typ host',
sdpMid: '',
});
test(() => {
const iceTransport = new RTCIceTransport();
iceTransport.stop();
assert_throws_dom('InvalidStateError',
() => iceTransport.addRemoteCandidate(candidate1));
assert_array_equals(iceTransport.getRemoteCandidates(), []);
}, 'addRemoteCandidate() throws if closed');
test(() => {
const iceTransport = new RTCIceTransport();
assert_throws_dom('OperationError',
() => iceTransport.addRemoteCandidate(
new RTCIceCandidate({ candidate: 'invalid', sdpMid: '' })));
assert_array_equals(iceTransport.getRemoteCandidates(), []);
}, 'addRemoteCandidate() throws on invalid candidate');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.addRemoteCandidate(candidate1);
iceTransport.start(dummyRemoteParameters);
assert_equals(iceTransport.state, 'checking');
assert_array_equals(iceTransport.getRemoteCandidates(), [candidate1]);
}, `start() transitions state to 'checking' if one remote candidate had been ` +
'added');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.start(dummyRemoteParameters);
iceTransport.addRemoteCandidate(candidate1);
assert_equals(iceTransport.state, 'checking');
assert_array_equals(iceTransport.getRemoteCandidates(), [candidate1]);
}, `addRemoteCandidate() transitions state to 'checking' if start() had been ` +
'called before');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.start(dummyRemoteParameters);
assert_throws_dom('InvalidStateError',
() => iceTransport.start(dummyRemoteParameters, 'controlling'));
}, 'start() throws if later called with a different role');
test(t => {
const iceTransport = makeIceTransport(t);
iceTransport.start({
usernameFragment: '1'.repeat(4),
password: '1'.repeat(22),
});
iceTransport.addRemoteCandidate(candidate1);
const changedRemoteParameters = {
usernameFragment: '2'.repeat(4),
password: '2'.repeat(22),
};
iceTransport.start(changedRemoteParameters);
assert_equals(iceTransport.state, 'new');
assert_array_equals(iceTransport.getRemoteCandidates(), []);
assert_ice_parameters_equals(iceTransport.getRemoteParameters(),
changedRemoteParameters);
}, `start() flushes remote candidates and transitions state to 'new' if ` +
'later called with different remote parameters');
promise_test(async t => {
const [ localTransport, remoteTransport ] =
makeGatherAndStartTwoIceTransports(t);
const localWatcher = new EventWatcher(t, localTransport, 'statechange');
const remoteWatcher = new EventWatcher(t, remoteTransport, 'statechange');
await Promise.all([
localWatcher.wait_for('statechange').then(() => {
assert_equals(localTransport.state, 'connected');
}),
remoteWatcher.wait_for('statechange').then(() => {
assert_equals(remoteTransport.state, 'connected');
}),
]);
}, 'Two RTCIceTransports connect to each other');
['controlling', 'controlled'].forEach(role => {
promise_test(async t => {
const [ localTransport, remoteTransport ] =
makeAndGatherTwoIceTransports(t);
localTransport.start(remoteTransport.getLocalParameters(), role);
remoteTransport.start(localTransport.getLocalParameters(), role);
const localWatcher = new EventWatcher(t, localTransport, 'statechange');
const remoteWatcher = new EventWatcher(t, remoteTransport, 'statechange');
await Promise.all([
localWatcher.wait_for('statechange').then(() => {
assert_equals(localTransport.state, 'connected');
}),
remoteWatcher.wait_for('statechange').then(() => {
assert_equals(remoteTransport.state, 'connected');
}),
]);
}, `Two RTCIceTransports configured with the ${role} role resolve the ` +
'conflict in band and still connect.');
});
promise_test(async t => {
async function waitForSelectedCandidatePairChangeThenConnected(t, transport,
transportName) {
const watcher = new EventWatcher(t, transport,
[ 'statechange', 'selectedcandidatepairchange' ]);
await watcher.wait_for('selectedcandidatepairchange');
const selectedCandidatePair = transport.getSelectedCandidatePair();
assert_not_equals(selectedCandidatePair, null,
`${transportName} selected candidate pair should not be null once ` +
'the selectedcandidatepairchange event fires');
assert_true(
transport.getLocalCandidates().some(
({ candidate }) =>
candidate === selectedCandidatePair.local.candidate),
`${transportName} selected candidate pair local should be in the ` +
'list of local candidates');
assert_true(
transport.getRemoteCandidates().some(
({ candidate }) =>
candidate === selectedCandidatePair.remote.candidate),
`${transportName} selected candidate pair local should be in the ` +
'list of remote candidates');
await watcher.wait_for('statechange');
assert_equals(transport.state, 'connected',
`${transportName} state should be 'connected'`);
}
const [ localTransport, remoteTransport ] =
makeGatherAndStartTwoIceTransports(t);
await Promise.all([
waitForSelectedCandidatePairChangeThenConnected(t, localTransport,
'local transport'),
waitForSelectedCandidatePairChangeThenConnected(t, remoteTransport,
'remote transport'),
]);
}, 'Selected candidate pair changes once the RTCIceTransports connect.');
promise_test(async t => {
const [ transport, ] = makeGatherAndStartTwoIceTransports(t);
const watcher = new EventWatcher(t, transport, 'selectedcandidatepairchange');
await watcher.wait_for('selectedcandidatepairchange');
transport.stop();
assert_equals(transport.getSelectedCandidatePair(), null);
}, 'getSelectedCandidatePair() returns null once the RTCIceTransport is ' +
'stopped.');
</script>
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