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<!doctype html>
<meta charset=utf-8>
<meta name="timeout" content="long">
<title></title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<script>
'use strict';
promise_test(async t => {
// Plan B is a legacy feature that should not be supported on a modern
// browser. To pass this test you must either ignore sdpSemantics altogether
// (and construct with Unified Plan despite us asking for Plan B) or throw an
// exception.
let pc = null;
try {
pc = new RTCPeerConnection({sdpSemantics:"plan-b"});
t.add_cleanup(() => pc.close());
} catch (e) {
// Test passed!
return;
}
// If we did not throw, we must not have gotten what we asked for. If
// sdpSemantics is not recognized by the browser it will be undefined here.
assert_not_equals(pc.getConfiguration().sdpSemantics, "plan-b");
}, 'Plan B is not supported');
</script>
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