codecs-subsequent-offer.https.html (1798B)
1 <!doctype html> 2 <meta charset=utf-8> 3 <meta name="timeout" content="long"> 4 <title>RTCPeerConnection Codecs in subsequent offer</title> 5 <script src="/resources/testharness.js"></script> 6 <script src="/resources/testharnessreport.js"></script> 7 <script src="../third_party/sdp/sdp.js"></script> 8 <script> 9 'use strict'; 10 11 // A test for https://www.rfc-editor.org/rfc/rfc8829.html#name-subsequent-offers 12 // The "m=" line and corresponding "a=rtpmap" and "a=fmtp" lines MUST only include 13 // media formats that have not been excluded by the codec preferences of the 14 // associated transceiver and also MUST include all currently available formats. 15 16 // A VP8-only offer. 17 const sdp = `v=0 18 o=- 0 3 IN IP4 127.0.0.1 19 s=- 20 t=0 0 21 a=fingerprint:sha-256 A7:24:72:CA:6E:02:55:39:BA:66:DF:6E:CC:4C:D8:B0:1A:BF:1A:56:65:7D:F4:03:AD:7E:77:43:2A:29:EC:93 22 m=video 9 RTP/SAVPF 100 23 c=IN IP4 0.0.0.0 24 a=rtcp-mux 25 a=sendrecv 26 a=mid:video 27 a=rtpmap:100 VP8/90000 28 a=setup:actpass 29 a=ice-ufrag:ETEn 30 a=ice-pwd:OtSK0WpNtpUjkY4+86js7Z/l 31 `; 32 33 promise_test(async t => { 34 const pc = new RTCPeerConnection(); 35 t.add_cleanup(() => pc.close()); 36 37 await pc.setRemoteDescription({type: 'offer', sdp}); 38 await pc.setLocalDescription(); 39 const transceiver = pc.getTransceivers()[0]; 40 assert_not_equals(transceiver.stopped, true); 41 const offer = await pc.createOffer(); 42 const mediaSection = SDPUtils.getMediaSections(offer.sdp)[0]; 43 const rtpParameters = SDPUtils.parseRtpParameters(mediaSection); 44 const vp8 = rtpParameters.codecs.filter(codec => codec.name === 'VP8'); 45 const h264 = rtpParameters.codecs.filter(codec => codec.name === 'H264'); 46 assert_greater_than(vp8.length, 0); 47 assert_greater_than(h264.length, 0); 48 }, 'A subsequent offer after a VP8-only negotiation includes at least all mandatory to implement codecs'); 49 50 </script>