| <!doctype html> |
| <meta charset=utf-8> |
| <title>RTCPeerConnection Simulcast Answer</title> |
| <script src="/resources/testharness.js"></script> |
| <script src="/resources/testharnessreport.js"></script> |
| <script> |
| 'use strict'; |
| |
| // Tests for the construction of answers 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']; |
| |
| const offer_sdp = `v=0 |
| o=- 3840232462471583827 2 IN IP4 127.0.0.1 |
| s=- |
| t=0 0 |
| a=group:BUNDLE 0 |
| a=msid-semantic: WMS |
| m=video 9 UDP/TLS/RTP/SAVPF 96 |
| c=IN IP4 0.0.0.0 |
| a=rtcp:9 IN IP4 0.0.0.0 |
| a=ice-ufrag:Li6+ |
| a=ice-pwd:3C05CTZBRQVmGCAq7hVasHlT |
| a=ice-options:trickle |
| a=fingerprint:sha-256 5B:D3:8E:66:0E:7D:D3:F3:8E:E6:80:28:19:FC:55:AD:58:5D:B9:3D:A8:DE:45:4A:E7:87:02:F8:3C:0B:3B:B3 |
| a=setup:actpass |
| a=mid:0 |
| a=extmap:4 urn:ietf:params:rtp-hdrext:sdes:rtp-stream-id |
| a=recvonly |
| a=rtcp-mux |
| a=rtpmap:96 VP8/90000 |
| a=rtcp-fb:96 goog-remb |
| a=rtcp-fb:96 transport-cc |
| a=rtcp-fb:96 ccm fir |
| a=rid:foo recv |
| a=rid:bar recv |
| a=rid:baz recv |
| a=simulcast:recv foo;bar;baz |
| `; |
| |
| await pc.setRemoteDescription({type: 'offer', sdp: offer_sdp}); |
| const transceiver = pc.getTransceivers()[0]; |
| // The created transceiver should be in "recvonly" state. Allow it to send. |
| transceiver.direction = "sendonly"; |
| const answer = await pc.createAnswer(); |
| let answer_lines = answer.sdp.split('\r\n'); |
| // Check for a RID line for each layer. |
| for (const rid of expected_rids) { |
| let result = answer_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 = answer_lines.find( |
| line => line.startsWith(`a=simulcast:send ${expected_rids.join(';')}`)); |
| assert_not_equals(result, undefined, "Could not find simulcast attribute."); |
| }, 'createAnswer() with multiple send encodings should create simulcast answer'); |
| </script> |
