simulcast-offer.html

Enable keyboard shortcuts

This WPT test may be referenced by the following Test IDs:
- /webrtc/protocol/simulcast-offer.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>RTCPeerConnection Simulcast Offer</title>

<script src="/resources/testharness.js"></script>

<script src="/resources/testharnessreport.js"></script>

<script>

'use strict';

// Tests for the construction of offers with simulcast according to:

// draft-ietf-mmusic-sdp-simulcast-13

// draft-ietf-mmusic-rid-15

promise_test(async t => {

  const pc = new RTCPeerConnection();

  t.add_cleanup(() => pc.close());

  const expected_rids = ['foo', 'bar', 'baz'];

  pc.addTransceiver('video', {

    sendEncodings: expected_rids.map(rid => ({rid}))

});

  const offer = await pc.createOffer();

  let offer_lines = offer.sdp.split('\r\n');

  // Check for a RID line for each layer.

  for (const rid of expected_rids) {

    let result = offer_lines.find(line => line.startsWith(`a=rid:${rid}`));

    assert_not_equals(result, undefined, `RID attribute for '${rid}' missing.`);

  // Check for simulcast attribute with send direction and all RIDs.

  let result = offer_lines.find(

      line => line.startsWith(`a=simulcast:send ${expected_rids.join(';')}`));

  assert_not_equals(result, undefined, "Could not find simulcast attribute.");

}, 'createOffer() with multiple send encodings should create simulcast offer');

</script>