| <!doctype html> |
| <meta charset=utf-8> |
| <meta name="timeout" content="long"> |
| <title>RTCPeerConnection Codecs in subsequent offer</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../third_party/sdp/sdp.js"></script> |
| <script> |
| 'use strict'; |
| |
| // A test for https://www.rfc-editor.org/rfc/rfc8829.html#name-subsequent-offers |
| // The "m=" line and corresponding "a=rtpmap" and "a=fmtp" lines MUST only include |
| // media formats that have not been excluded by the codec preferences of the |
| // associated transceiver and also MUST include all currently available formats. |
| |
| // A VP8-only offer. |
| const sdp = `v=0 |
| o=- 0 3 IN IP4 127.0.0.1 |
| s=- |
| t=0 0 |
| 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 |
| m=video 9 RTP/SAVPF 100 |
| c=IN IP4 0.0.0.0 |
| a=rtcp-mux |
| a=sendrecv |
| a=mid:video |
| a=rtpmap:100 VP8/90000 |
| a=setup:actpass |
| a=ice-ufrag:ETEn |
| a=ice-pwd:OtSK0WpNtpUjkY4+86js7Z/l |
| `; |
| |
| promise_test(async t => { |
| const pc = new RTCPeerConnection(); |
| t.add_cleanup(() => pc.close()); |
| |
| await pc.setRemoteDescription({type: 'offer', sdp}); |
| await pc.setLocalDescription(); |
| const transceiver = pc.getTransceivers()[0]; |
| assert_not_equals(transceiver.stopped, true); |
| const offer = await pc.createOffer(); |
| const mediaSection = SDPUtils.getMediaSections(offer.sdp)[0]; |
| const rtpParameters = SDPUtils.parseRtpParameters(mediaSection); |
| const vp8 = rtpParameters.codecs.filter(codec => codec.name === 'VP8'); |
| const h264 = rtpParameters.codecs.filter(codec => codec.name === 'H264'); |
| assert_greater_than(vp8.length, 0); |
| assert_greater_than(h264.length, 0); |
| }, 'A subsequent offer after a VP8-only negotiation includes at least all mandatory to implement codecs'); |
| |
| </script> |
