| <!doctype html> |
| <meta charset=utf-8> |
| <title>payload type handling (assuming rtcp-mux)</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script src="../third_party/sdp/sdp.js"></script> |
| <script> |
| promise_test(async t => { |
| const pc1 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc1.close()); |
| const pc2 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc2.close()); |
| const negotiate = async () => { |
| await pc1.setLocalDescription(); |
| await pc2.setRemoteDescription(pc1.localDescription); |
| await pc2.setLocalDescription(); |
| await pc1.setRemoteDescription(pc2.localDescription); |
| }; |
| |
| // Add audio, negotiate, stop the transceiver, negotiate again, |
| // add another audio transceiver and negotiate. This should re-use the m-line. |
| pc1.addTransceiver('audio'); |
| await negotiate(); |
| pc1.getTransceivers()[0].stop(); |
| await negotiate(); |
| pc1.addTransceiver('audio'); |
| await negotiate(); |
| let numberOfMediaSections = SDPUtils.splitSections(pc1.localDescription.sdp).length - 1; |
| assert_equals(numberOfMediaSections, 1, 'Audio m-line gets reused for audio transceiver'); |
| |
| // Stop the audio transceiver, negotiate, add a video transceiver, negotiate. |
| // This should reuse the m-line. |
| pc1.getTransceivers()[0].stop(); |
| await negotiate(); |
| pc1.addTransceiver('video'); |
| await negotiate(); |
| numberOfMediaSections = SDPUtils.splitSections(pc1.localDescription.sdp).length - 1; |
| assert_equals(numberOfMediaSections, 1, 'Audio m-line gets reused for video transceiver'); |
| |
| // Add another video transceiver after stopping the current one. |
| // This should re-use the m-line. |
| pc1.getTransceivers()[0].stop(); |
| await negotiate(); |
| pc1.addTransceiver('video'); |
| await negotiate(); |
| numberOfMediaSections = SDPUtils.splitSections(pc1.localDescription.sdp).length - 1; |
| assert_equals(numberOfMediaSections, 1, 'Video m-line gets reused for video transceiver'); |
| }, 'Reuses m-lines in local negotiation'); |
| |
| promise_test(async t => { |
| // SDP with a rejected video m-line. |
| 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 0 UDP/TLS/RTP/SAVPF 100 |
| c=IN IP4 0.0.0.0 |
| a=rtcp-mux |
| a=sendonly |
| a=mid:video |
| a=rtpmap:100 VP8/90000 |
| a=setup:actpass |
| a=ice-ufrag:ETEn |
| a=ice-pwd:OtSK0WpNtpUjkY4+86js7Z/l |
| `; |
| const pc1 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc1.close()); |
| await pc1.setRemoteDescription({type: 'offer', sdp}); |
| await pc1.setLocalDescription(); |
| assert_equals(pc1.getTransceivers().length, 0); |
| pc1.addTransceiver('audio'); |
| let offer = await pc1.createOffer(); |
| let numberOfMediaSections = SDPUtils.splitSections(offer.sdp).length - 1; |
| assert_equals(numberOfMediaSections, 1, 'Remote video m-line gets reused for audio transceiver'); |
| |
| const pc2 = new RTCPeerConnection(); |
| t.add_cleanup(() => pc2.close()); |
| await pc2.setRemoteDescription({type: 'offer', sdp}); |
| await pc2.setLocalDescription(); |
| assert_equals(pc2.getTransceivers().length, 0); |
| pc1.addTransceiver('video'); |
| offer = await pc2.createOffer(); |
| numberOfMediaSections = SDPUtils.splitSections(offer.sdp).length - 1; |
| assert_equals(numberOfMediaSections, 1, 'Remote video m-line gets reused for video transceiver'); |
| }, 'Reuses m-lines in remote negotiation'); |
| </script> |
