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<!doctype html>
<meta name="timeout" content="long">
<title>RTCConfiguration validation</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="RTCConfiguration-helper.js"></script>
<script src="RTCPeerConnection-helper.js"></script>
<script>
test(() => {
// Check that a configuration change gets applied only if it's entirely valid
// see https://github.com/w3c/webrtc-pc/issues/2688
// and https://github.com/w3c/webrtc-pc/pull/2689
const pc = new RTCPeerConnection();
assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
assert_throws_dom('SyntaxError', () =>
pc.setConfiguration({iceTransportPolicy: 'relay', iceServers: [{urls: ""}]})
);
assert_equals(pc.getConfiguration().iceTransportPolicy, 'all');
}, `setConfiguration only applies if the entire configuration is valid`);
</script>
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