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<!doctype html>
<meta charset=utf-8>
<title>RTCPeerconnection SDP SCTP format test</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="../RTCPeerConnection-helper.js"></script>
<script>
'use strict';
promise_test(async t => {
const caller = new RTCPeerConnection();
const callee = new RTCPeerConnection();
t.add_cleanup(() => caller.close());
t.add_cleanup(() => callee.close());
caller.createDataChannel('channel');
const offer = await caller.createOffer();
const [preamble, media_section, postamble] = offer.sdp.split('\r\nm=');
assert_true(typeof(postamble) === 'undefined');
assert_greater_than(media_section.search(
/^application \d+ UDP\/DTLS\/SCTP webrtc-datachannel\r\n/), -1);
assert_greater_than(media_section.search(/\r\na=sctp-port:\d+\r\n/), -1);
assert_greater_than(media_section.search(/\r\na=mid:/), -1);
}, 'Generated Datachannel SDP uses correct SCTP offer syntax');
</script>
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